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1 | # cython: embedsignature=True | |
2 | """ | |
3 | This module is a thin wrapper around librados. | |
4 | ||
5 | Error codes from librados are turned into exceptions that subclass | |
6 | :class:`Error`. Almost all methods may raise :class:`Error(the base class of all rados exceptions), :class:`PermissionError` | |
7 | (the base class of all rados exceptions), :class:`PermissionError` | |
8 | and :class:`IOError`, in addition to those documented for the | |
9 | method. | |
10 | """ | |
11 | # Copyright 2011 Josh Durgin | |
12 | # Copyright 2011, Hannu Valtonen <hannu.valtonen@ormod.com> | |
13 | # Copyright 2015 Hector Martin <marcan@marcan.st> | |
14 | # Copyright 2016 Mehdi Abaakouk <sileht@redhat.com> | |
15 | ||
16 | from cpython cimport PyObject, ref | |
17 | from cpython.pycapsule cimport * | |
18 | from libc cimport errno | |
19 | from libc.stdint cimport * | |
20 | from libc.stdlib cimport malloc, realloc, free | |
21 | ||
22 | import sys | |
23 | import threading | |
24 | import time | |
25 | ||
26 | from collections import Callable | |
27 | from datetime import datetime | |
28 | from functools import partial, wraps | |
29 | from itertools import chain | |
30 | ||
31 | # Are we running Python 2.x | |
32 | if sys.version_info[0] < 3: | |
33 | str_type = basestring | |
34 | else: | |
35 | str_type = str | |
36 | ||
37 | ||
38 | cdef extern from "Python.h": | |
39 | # These are in cpython/string.pxd, but use "object" types instead of | |
40 | # PyObject*, which invokes assumptions in cpython that we need to | |
41 | # legitimately break to implement zero-copy string buffers in Ioctx.read(). | |
42 | # This is valid use of the Python API and documented as a special case. | |
43 | PyObject *PyBytes_FromStringAndSize(char *v, Py_ssize_t len) except NULL | |
44 | char* PyBytes_AsString(PyObject *string) except NULL | |
45 | int _PyBytes_Resize(PyObject **string, Py_ssize_t newsize) except -1 | |
46 | void PyEval_InitThreads() | |
47 | ||
48 | ||
49 | cdef extern from "time.h": | |
50 | ctypedef long int time_t | |
51 | ctypedef long int suseconds_t | |
52 | ||
53 | ||
54 | cdef extern from "sys/time.h": | |
55 | cdef struct timeval: | |
56 | time_t tv_sec | |
57 | suseconds_t tv_usec | |
58 | ||
59 | ||
60 | cdef extern from "rados/rados_types.h" nogil: | |
61 | cdef char* _LIBRADOS_ALL_NSPACES "LIBRADOS_ALL_NSPACES" | |
62 | ||
63 | ||
64 | cdef extern from "rados/librados.h" nogil: | |
65 | enum: | |
66 | _LIBRADOS_OP_FLAG_EXCL "LIBRADOS_OP_FLAG_EXCL" | |
67 | _LIBRADOS_OP_FLAG_FAILOK "LIBRADOS_OP_FLAG_FAILOK" | |
68 | _LIBRADOS_OP_FLAG_FADVISE_RANDOM "LIBRADOS_OP_FLAG_FADVISE_RANDOM" | |
69 | _LIBRADOS_OP_FLAG_FADVISE_SEQUENTIAL "LIBRADOS_OP_FLAG_FADVISE_SEQUENTIAL" | |
70 | _LIBRADOS_OP_FLAG_FADVISE_WILLNEED "LIBRADOS_OP_FLAG_FADVISE_WILLNEED" | |
71 | _LIBRADOS_OP_FLAG_FADVISE_DONTNEED "LIBRADOS_OP_FLAG_FADVISE_DONTNEED" | |
72 | _LIBRADOS_OP_FLAG_FADVISE_NOCACHE "LIBRADOS_OP_FLAG_FADVISE_NOCACHE" | |
73 | ||
74 | ||
75 | enum: | |
76 | _LIBRADOS_OPERATION_NOFLAG "LIBRADOS_OPERATION_NOFLAG" | |
77 | _LIBRADOS_OPERATION_BALANCE_READS "LIBRADOS_OPERATION_BALANCE_READS" | |
78 | _LIBRADOS_OPERATION_LOCALIZE_READS "LIBRADOS_OPERATION_LOCALIZE_READS" | |
79 | _LIBRADOS_OPERATION_ORDER_READS_WRITES "LIBRADOS_OPERATION_ORDER_READS_WRITES" | |
80 | _LIBRADOS_OPERATION_IGNORE_CACHE "LIBRADOS_OPERATION_IGNORE_CACHE" | |
81 | _LIBRADOS_OPERATION_SKIPRWLOCKS "LIBRADOS_OPERATION_SKIPRWLOCKS" | |
82 | _LIBRADOS_OPERATION_IGNORE_OVERLAY "LIBRADOS_OPERATION_IGNORE_OVERLAY" | |
83 | _LIBRADOS_CREATE_EXCLUSIVE "LIBRADOS_CREATE_EXCLUSIVE" | |
84 | _LIBRADOS_CREATE_IDEMPOTENT "LIBRADOS_CREATE_IDEMPOTENT" | |
85 | ||
86 | cdef uint64_t _LIBRADOS_SNAP_HEAD "LIBRADOS_SNAP_HEAD" | |
87 | ||
88 | ctypedef void* rados_t | |
89 | ctypedef void* rados_config_t | |
90 | ctypedef void* rados_ioctx_t | |
91 | ctypedef void* rados_xattrs_iter_t | |
92 | ctypedef void* rados_omap_iter_t | |
93 | ctypedef void* rados_list_ctx_t | |
94 | ctypedef uint64_t rados_snap_t | |
95 | ctypedef void *rados_write_op_t | |
96 | ctypedef void *rados_read_op_t | |
97 | ctypedef void *rados_completion_t | |
98 | ctypedef void (*rados_callback_t)(rados_completion_t cb, void *arg) | |
99 | ctypedef void (*rados_log_callback_t)(void *arg, const char *line, const char *who, | |
100 | uint64_t sec, uint64_t nsec, uint64_t seq, const char *level, const char *msg) | |
101 | ctypedef void (*rados_log_callback2_t)(void *arg, const char *line, const char *channel, const char *who, const char *name, | |
102 | uint64_t sec, uint64_t nsec, uint64_t seq, const char *level, const char *msg) | |
103 | ||
104 | ||
105 | cdef struct rados_cluster_stat_t: | |
106 | uint64_t kb | |
107 | uint64_t kb_used | |
108 | uint64_t kb_avail | |
109 | uint64_t num_objects | |
110 | ||
111 | cdef struct rados_pool_stat_t: | |
112 | uint64_t num_bytes | |
113 | uint64_t num_kb | |
114 | uint64_t num_objects | |
115 | uint64_t num_object_clones | |
116 | uint64_t num_object_copies | |
117 | uint64_t num_objects_missing_on_primary | |
118 | uint64_t num_objects_unfound | |
119 | uint64_t num_objects_degraded | |
120 | uint64_t num_rd | |
121 | uint64_t num_rd_kb | |
122 | uint64_t num_wr | |
123 | uint64_t num_wr_kb | |
124 | ||
125 | void rados_buffer_free(char *buf) | |
126 | ||
127 | void rados_version(int *major, int *minor, int *extra) | |
128 | int rados_create2(rados_t *pcluster, const char *const clustername, | |
129 | const char * const name, uint64_t flags) | |
130 | int rados_create_with_context(rados_t *cluster, rados_config_t cct) | |
131 | int rados_connect(rados_t cluster) | |
132 | void rados_shutdown(rados_t cluster) | |
133 | int rados_conf_read_file(rados_t cluster, const char *path) | |
134 | int rados_conf_parse_argv_remainder(rados_t cluster, int argc, const char **argv, const char **remargv) | |
135 | int rados_conf_parse_env(rados_t cluster, const char *var) | |
136 | int rados_conf_set(rados_t cluster, char *option, const char *value) | |
137 | int rados_conf_get(rados_t cluster, char *option, char *buf, size_t len) | |
138 | ||
139 | int rados_ioctx_pool_stat(rados_ioctx_t io, rados_pool_stat_t *stats) | |
140 | int64_t rados_pool_lookup(rados_t cluster, const char *pool_name) | |
141 | int rados_pool_reverse_lookup(rados_t cluster, int64_t id, char *buf, size_t maxlen) | |
142 | int rados_pool_create(rados_t cluster, const char *pool_name) | |
143 | int rados_pool_create_with_auid(rados_t cluster, const char *pool_name, uint64_t auid) | |
144 | int rados_pool_create_with_crush_rule(rados_t cluster, const char *pool_name, uint8_t crush_rule_num) | |
145 | int rados_pool_create_with_all(rados_t cluster, const char *pool_name, uint64_t auid, uint8_t crush_rule_num) | |
146 | int rados_pool_get_base_tier(rados_t cluster, int64_t pool, int64_t *base_tier) | |
147 | int rados_pool_list(rados_t cluster, char *buf, size_t len) | |
148 | int rados_pool_delete(rados_t cluster, const char *pool_name) | |
149 | int rados_inconsistent_pg_list(rados_t cluster, int64_t pool, char *buf, size_t len) | |
150 | ||
151 | int rados_cluster_stat(rados_t cluster, rados_cluster_stat_t *result) | |
152 | int rados_cluster_fsid(rados_t cluster, char *buf, size_t len) | |
153 | int rados_blacklist_add(rados_t cluster, char *client_address, uint32_t expire_seconds) | |
154 | ||
155 | int rados_ping_monitor(rados_t cluster, const char *mon_id, char **outstr, size_t *outstrlen) | |
156 | int rados_mon_command(rados_t cluster, const char **cmd, size_t cmdlen, | |
157 | const char *inbuf, size_t inbuflen, | |
158 | char **outbuf, size_t *outbuflen, | |
159 | char **outs, size_t *outslen) | |
160 | int rados_mgr_command(rados_t cluster, const char **cmd, size_t cmdlen, | |
161 | const char *inbuf, size_t inbuflen, | |
162 | char **outbuf, size_t *outbuflen, | |
163 | char **outs, size_t *outslen) | |
164 | int rados_mon_command_target(rados_t cluster, const char *name, const char **cmd, size_t cmdlen, | |
165 | const char *inbuf, size_t inbuflen, | |
166 | char **outbuf, size_t *outbuflen, | |
167 | char **outs, size_t *outslen) | |
168 | int rados_osd_command(rados_t cluster, int osdid, const char **cmd, size_t cmdlen, | |
169 | const char *inbuf, size_t inbuflen, | |
170 | char **outbuf, size_t *outbuflen, | |
171 | char **outs, size_t *outslen) | |
172 | int rados_pg_command(rados_t cluster, const char *pgstr, const char **cmd, size_t cmdlen, | |
173 | const char *inbuf, size_t inbuflen, | |
174 | char **outbuf, size_t *outbuflen, | |
175 | char **outs, size_t *outslen) | |
176 | int rados_monitor_log(rados_t cluster, const char *level, rados_log_callback_t cb, void *arg) | |
177 | int rados_monitor_log2(rados_t cluster, const char *level, rados_log_callback2_t cb, void *arg) | |
178 | ||
179 | int rados_wait_for_latest_osdmap(rados_t cluster) | |
180 | ||
181 | int rados_ioctx_create(rados_t cluster, const char *pool_name, rados_ioctx_t *ioctx) | |
182 | void rados_ioctx_destroy(rados_ioctx_t io) | |
183 | int rados_ioctx_pool_set_auid(rados_ioctx_t io, uint64_t auid) | |
184 | void rados_ioctx_locator_set_key(rados_ioctx_t io, const char *key) | |
185 | void rados_ioctx_set_namespace(rados_ioctx_t io, const char * nspace) | |
186 | ||
187 | uint64_t rados_get_last_version(rados_ioctx_t io) | |
188 | int rados_stat(rados_ioctx_t io, const char *o, uint64_t *psize, time_t *pmtime) | |
189 | int rados_write(rados_ioctx_t io, const char *oid, const char *buf, size_t len, uint64_t off) | |
190 | int rados_write_full(rados_ioctx_t io, const char *oid, const char *buf, size_t len) | |
191 | int rados_append(rados_ioctx_t io, const char *oid, const char *buf, size_t len) | |
192 | int rados_read(rados_ioctx_t io, const char *oid, char *buf, size_t len, uint64_t off) | |
193 | int rados_remove(rados_ioctx_t io, const char *oid) | |
194 | int rados_trunc(rados_ioctx_t io, const char *oid, uint64_t size) | |
195 | int rados_getxattr(rados_ioctx_t io, const char *o, const char *name, char *buf, size_t len) | |
196 | int rados_setxattr(rados_ioctx_t io, const char *o, const char *name, const char *buf, size_t len) | |
197 | int rados_rmxattr(rados_ioctx_t io, const char *o, const char *name) | |
198 | int rados_getxattrs(rados_ioctx_t io, const char *oid, rados_xattrs_iter_t *iter) | |
199 | int rados_getxattrs_next(rados_xattrs_iter_t iter, const char **name, const char **val, size_t *len) | |
200 | void rados_getxattrs_end(rados_xattrs_iter_t iter) | |
201 | ||
202 | int rados_nobjects_list_open(rados_ioctx_t io, rados_list_ctx_t *ctx) | |
203 | int rados_nobjects_list_next(rados_list_ctx_t ctx, const char **entry, const char **key, const char **nspace) | |
204 | void rados_nobjects_list_close(rados_list_ctx_t ctx) | |
205 | ||
206 | int rados_ioctx_snap_rollback(rados_ioctx_t io, const char * oid, const char * snapname) | |
207 | int rados_ioctx_snap_create(rados_ioctx_t io, const char * snapname) | |
208 | int rados_ioctx_snap_remove(rados_ioctx_t io, const char * snapname) | |
209 | int rados_ioctx_snap_lookup(rados_ioctx_t io, const char * name, rados_snap_t * id) | |
210 | int rados_ioctx_snap_get_name(rados_ioctx_t io, rados_snap_t id, char * name, int maxlen) | |
211 | void rados_ioctx_snap_set_read(rados_ioctx_t io, rados_snap_t snap) | |
212 | int rados_ioctx_snap_list(rados_ioctx_t io, rados_snap_t * snaps, int maxlen) | |
213 | int rados_ioctx_snap_get_stamp(rados_ioctx_t io, rados_snap_t id, time_t * t) | |
214 | ||
215 | int rados_lock_exclusive(rados_ioctx_t io, const char * oid, const char * name, | |
216 | const char * cookie, const char * desc, | |
217 | timeval * duration, uint8_t flags) | |
218 | int rados_lock_shared(rados_ioctx_t io, const char * o, const char * name, | |
219 | const char * cookie, const char * tag, const char * desc, | |
220 | timeval * duration, uint8_t flags) | |
221 | int rados_unlock(rados_ioctx_t io, const char * o, const char * name, const char * cookie) | |
222 | ||
223 | rados_write_op_t rados_create_write_op() | |
224 | void rados_release_write_op(rados_write_op_t write_op) | |
225 | ||
226 | rados_read_op_t rados_create_read_op() | |
227 | void rados_release_read_op(rados_read_op_t read_op) | |
228 | ||
229 | int rados_aio_create_completion(void * cb_arg, rados_callback_t cb_complete, rados_callback_t cb_safe, rados_completion_t * pc) | |
230 | void rados_aio_release(rados_completion_t c) | |
231 | int rados_aio_stat(rados_ioctx_t io, const char *oid, rados_completion_t completion, uint64_t *psize, time_t *pmtime) | |
232 | int rados_aio_write(rados_ioctx_t io, const char * oid, rados_completion_t completion, const char * buf, size_t len, uint64_t off) | |
233 | int rados_aio_append(rados_ioctx_t io, const char * oid, rados_completion_t completion, const char * buf, size_t len) | |
234 | int rados_aio_write_full(rados_ioctx_t io, const char * oid, rados_completion_t completion, const char * buf, size_t len) | |
235 | int rados_aio_remove(rados_ioctx_t io, const char * oid, rados_completion_t completion) | |
236 | int rados_aio_read(rados_ioctx_t io, const char * oid, rados_completion_t completion, char * buf, size_t len, uint64_t off) | |
237 | int rados_aio_flush(rados_ioctx_t io) | |
238 | ||
239 | int rados_aio_get_return_value(rados_completion_t c) | |
240 | int rados_aio_wait_for_complete_and_cb(rados_completion_t c) | |
241 | int rados_aio_wait_for_safe_and_cb(rados_completion_t c) | |
242 | int rados_aio_wait_for_complete(rados_completion_t c) | |
243 | int rados_aio_wait_for_safe(rados_completion_t c) | |
244 | int rados_aio_is_complete(rados_completion_t c) | |
245 | int rados_aio_is_safe(rados_completion_t c) | |
246 | ||
247 | int rados_exec(rados_ioctx_t io, const char * oid, const char * cls, const char * method, | |
248 | const char * in_buf, size_t in_len, char * buf, size_t out_len) | |
249 | int rados_aio_exec(rados_ioctx_t io, const char * oid, rados_completion_t completion, const char * cls, const char * method, | |
250 | const char * in_buf, size_t in_len, char * buf, size_t out_len) | |
251 | ||
252 | int rados_write_op_operate(rados_write_op_t write_op, rados_ioctx_t io, const char * oid, time_t * mtime, int flags) | |
253 | int rados_aio_write_op_operate(rados_write_op_t write_op, rados_ioctx_t io, rados_completion_t completion, const char *oid, time_t *mtime, int flags) | |
254 | void rados_write_op_omap_set(rados_write_op_t write_op, const char * const* keys, const char * const* vals, const size_t * lens, size_t num) | |
255 | void rados_write_op_omap_rm_keys(rados_write_op_t write_op, const char * const* keys, size_t keys_len) | |
256 | void rados_write_op_omap_clear(rados_write_op_t write_op) | |
257 | void rados_write_op_set_flags(rados_write_op_t write_op, int flags) | |
258 | ||
259 | void rados_write_op_create(rados_write_op_t write_op, int exclusive, const char *category) | |
260 | void rados_write_op_append(rados_write_op_t write_op, const char *buffer, size_t len) | |
261 | void rados_write_op_write_full(rados_write_op_t write_op, const char *buffer, size_t len) | |
262 | void rados_write_op_write(rados_write_op_t write_op, const char *buffer, size_t len, uint64_t offset) | |
263 | void rados_write_op_remove(rados_write_op_t write_op) | |
264 | void rados_write_op_truncate(rados_write_op_t write_op, uint64_t offset) | |
265 | void rados_write_op_zero(rados_write_op_t write_op, uint64_t offset, uint64_t len) | |
266 | ||
267 | void rados_read_op_omap_get_vals(rados_read_op_t read_op, const char * start_after, const char * filter_prefix, uint64_t max_return, rados_omap_iter_t * iter, int * prval) | |
268 | void rados_read_op_omap_get_keys(rados_read_op_t read_op, const char * start_after, uint64_t max_return, rados_omap_iter_t * iter, int * prval) | |
269 | void rados_read_op_omap_get_vals_by_keys(rados_read_op_t read_op, const char * const* keys, size_t keys_len, rados_omap_iter_t * iter, int * prval) | |
270 | int rados_read_op_operate(rados_read_op_t read_op, rados_ioctx_t io, const char * oid, int flags) | |
271 | int rados_aio_read_op_operate(rados_read_op_t read_op, rados_ioctx_t io, rados_completion_t completion, const char *oid, int flags) | |
272 | void rados_read_op_set_flags(rados_read_op_t read_op, int flags) | |
273 | int rados_omap_get_next(rados_omap_iter_t iter, const char * const* key, const char * const* val, size_t * len) | |
274 | void rados_omap_get_end(rados_omap_iter_t iter) | |
275 | ||
276 | ||
277 | LIBRADOS_OP_FLAG_EXCL = _LIBRADOS_OP_FLAG_EXCL | |
278 | LIBRADOS_OP_FLAG_FAILOK = _LIBRADOS_OP_FLAG_FAILOK | |
279 | LIBRADOS_OP_FLAG_FADVISE_RANDOM = _LIBRADOS_OP_FLAG_FADVISE_RANDOM | |
280 | LIBRADOS_OP_FLAG_FADVISE_SEQUENTIAL = _LIBRADOS_OP_FLAG_FADVISE_SEQUENTIAL | |
281 | LIBRADOS_OP_FLAG_FADVISE_WILLNEED = _LIBRADOS_OP_FLAG_FADVISE_WILLNEED | |
282 | LIBRADOS_OP_FLAG_FADVISE_DONTNEED = _LIBRADOS_OP_FLAG_FADVISE_DONTNEED | |
283 | LIBRADOS_OP_FLAG_FADVISE_NOCACHE = _LIBRADOS_OP_FLAG_FADVISE_NOCACHE | |
284 | ||
285 | LIBRADOS_SNAP_HEAD = _LIBRADOS_SNAP_HEAD | |
286 | ||
287 | LIBRADOS_OPERATION_NOFLAG = _LIBRADOS_OPERATION_NOFLAG | |
288 | LIBRADOS_OPERATION_BALANCE_READS = _LIBRADOS_OPERATION_BALANCE_READS | |
289 | LIBRADOS_OPERATION_LOCALIZE_READS = _LIBRADOS_OPERATION_LOCALIZE_READS | |
290 | LIBRADOS_OPERATION_ORDER_READS_WRITES = _LIBRADOS_OPERATION_ORDER_READS_WRITES | |
291 | LIBRADOS_OPERATION_IGNORE_CACHE = _LIBRADOS_OPERATION_IGNORE_CACHE | |
292 | LIBRADOS_OPERATION_SKIPRWLOCKS = _LIBRADOS_OPERATION_SKIPRWLOCKS | |
293 | LIBRADOS_OPERATION_IGNORE_OVERLAY = _LIBRADOS_OPERATION_IGNORE_OVERLAY | |
294 | ||
295 | LIBRADOS_ALL_NSPACES = _LIBRADOS_ALL_NSPACES.decode('utf-8') | |
296 | ||
297 | LIBRADOS_CREATE_EXCLUSIVE = _LIBRADOS_CREATE_EXCLUSIVE | |
298 | LIBRADOS_CREATE_IDEMPOTENT = _LIBRADOS_CREATE_IDEMPOTENT | |
299 | ||
300 | ANONYMOUS_AUID = 0xffffffffffffffff | |
301 | ADMIN_AUID = 0 | |
302 | ||
303 | ||
304 | class Error(Exception): | |
305 | """ `Error` class, derived from `Exception` """ | |
306 | pass | |
307 | ||
308 | ||
309 | class InvalidArgumentError(Error): | |
310 | pass | |
311 | ||
312 | ||
313 | class OSError(Error): | |
314 | """ `OSError` class, derived from `Error` """ | |
315 | def __init__(self, message, errno=None): | |
316 | super(OSError, self).__init__(message) | |
317 | self.errno = errno | |
318 | ||
319 | def __str__(self): | |
320 | msg = super(OSError, self).__str__() | |
321 | if self.errno is None: | |
322 | return msg | |
323 | return '[errno {0}] {1}'.format(self.errno, msg) | |
324 | ||
325 | def __reduce__(self): | |
326 | return (self.__class__, (self.message, self.errno)) | |
327 | ||
328 | class InterruptedOrTimeoutError(OSError): | |
329 | """ `InterruptedOrTimeoutError` class, derived from `OSError` """ | |
330 | pass | |
331 | ||
332 | ||
333 | class PermissionError(OSError): | |
334 | """ `PermissionError` class, derived from `OSError` """ | |
335 | pass | |
336 | ||
337 | ||
338 | class PermissionDeniedError(OSError): | |
339 | """ deal with EACCES related. """ | |
340 | pass | |
341 | ||
342 | ||
343 | class ObjectNotFound(OSError): | |
344 | """ `ObjectNotFound` class, derived from `OSError` """ | |
345 | pass | |
346 | ||
347 | ||
348 | class NoData(OSError): | |
349 | """ `NoData` class, derived from `OSError` """ | |
350 | pass | |
351 | ||
352 | ||
353 | class ObjectExists(OSError): | |
354 | """ `ObjectExists` class, derived from `OSError` """ | |
355 | pass | |
356 | ||
357 | ||
358 | class ObjectBusy(OSError): | |
359 | """ `ObjectBusy` class, derived from `IOError` """ | |
360 | pass | |
361 | ||
362 | ||
363 | class IOError(OSError): | |
364 | """ `ObjectBusy` class, derived from `OSError` """ | |
365 | pass | |
366 | ||
367 | ||
368 | class NoSpace(OSError): | |
369 | """ `NoSpace` class, derived from `OSError` """ | |
370 | pass | |
371 | ||
372 | ||
373 | class RadosStateError(Error): | |
374 | """ `RadosStateError` class, derived from `Error` """ | |
375 | pass | |
376 | ||
377 | ||
378 | class IoctxStateError(Error): | |
379 | """ `IoctxStateError` class, derived from `Error` """ | |
380 | pass | |
381 | ||
382 | ||
383 | class ObjectStateError(Error): | |
384 | """ `ObjectStateError` class, derived from `Error` """ | |
385 | pass | |
386 | ||
387 | ||
388 | class LogicError(Error): | |
389 | """ `` class, derived from `Error` """ | |
390 | pass | |
391 | ||
392 | ||
393 | class TimedOut(OSError): | |
394 | """ `TimedOut` class, derived from `OSError` """ | |
395 | pass | |
396 | ||
397 | ||
398 | IF UNAME_SYSNAME == "FreeBSD": | |
399 | cdef errno_to_exception = { | |
400 | errno.EPERM : PermissionError, | |
401 | errno.ENOENT : ObjectNotFound, | |
402 | errno.EIO : IOError, | |
403 | errno.ENOSPC : NoSpace, | |
404 | errno.EEXIST : ObjectExists, | |
405 | errno.EBUSY : ObjectBusy, | |
406 | errno.ENOATTR : NoData, | |
407 | errno.EINTR : InterruptedOrTimeoutError, | |
408 | errno.ETIMEDOUT : TimedOut, | |
409 | errno.EACCES : PermissionDeniedError, | |
410 | errno.EINVAL : InvalidArgumentError, | |
411 | } | |
412 | ELSE: | |
413 | cdef errno_to_exception = { | |
414 | errno.EPERM : PermissionError, | |
415 | errno.ENOENT : ObjectNotFound, | |
416 | errno.EIO : IOError, | |
417 | errno.ENOSPC : NoSpace, | |
418 | errno.EEXIST : ObjectExists, | |
419 | errno.EBUSY : ObjectBusy, | |
420 | errno.ENODATA : NoData, | |
421 | errno.EINTR : InterruptedOrTimeoutError, | |
422 | errno.ETIMEDOUT : TimedOut, | |
423 | errno.EACCES : PermissionDeniedError, | |
424 | errno.EINVAL : InvalidArgumentError, | |
425 | } | |
426 | ||
427 | ||
428 | cdef make_ex(ret, msg): | |
429 | """ | |
430 | Translate a librados return code into an exception. | |
431 | ||
432 | :param ret: the return code | |
433 | :type ret: int | |
434 | :param msg: the error message to use | |
435 | :type msg: str | |
436 | :returns: a subclass of :class:`Error` | |
437 | """ | |
438 | ret = abs(ret) | |
439 | if ret in errno_to_exception: | |
440 | return errno_to_exception[ret](msg, errno=ret) | |
441 | else: | |
442 | return OSError(msg, errno=ret) | |
443 | ||
444 | ||
445 | # helper to specify an optional argument, where in addition to `cls`, `None` | |
446 | # is also acceptable | |
447 | def opt(cls): | |
448 | return (cls, None) | |
449 | ||
450 | ||
451 | # validate argument types of an instance method | |
452 | # kwargs is an un-ordered dict, so use args instead | |
453 | def requires(*types): | |
454 | def is_type_of(v, t): | |
455 | if t is None: | |
456 | return v is None | |
457 | else: | |
458 | return isinstance(v, t) | |
459 | ||
460 | def check_type(val, arg_name, arg_type): | |
461 | if isinstance(arg_type, tuple): | |
462 | if any(is_type_of(val, t) for t in arg_type): | |
463 | return | |
464 | type_names = ' or '.join('None' if t is None else t.__name__ | |
465 | for t in arg_type) | |
466 | raise TypeError('%s must be %s' % (arg_name, type_names)) | |
467 | else: | |
468 | if is_type_of(val, arg_type): | |
469 | return | |
470 | assert(arg_type is not None) | |
471 | raise TypeError('%s must be %s' % (arg_name, arg_type.__name__)) | |
472 | ||
473 | def wrapper(f): | |
474 | # FIXME(sileht): this stop with | |
475 | # AttributeError: 'method_descriptor' object has no attribute '__module__' | |
476 | # @wraps(f) | |
477 | def validate_func(*args, **kwargs): | |
478 | # ignore the `self` arg | |
479 | pos_args = zip(args[1:], types) | |
480 | named_args = ((kwargs[name], (name, spec)) for name, spec in types | |
481 | if name in kwargs) | |
482 | for arg_val, (arg_name, arg_type) in chain(pos_args, named_args): | |
483 | check_type(arg_val, arg_name, arg_type) | |
484 | return f(*args, **kwargs) | |
485 | return validate_func | |
486 | return wrapper | |
487 | ||
488 | ||
489 | def cstr(val, name, encoding="utf-8", opt=False): | |
490 | """ | |
491 | Create a byte string from a Python string | |
492 | ||
493 | :param basestring val: Python string | |
494 | :param str name: Name of the string parameter, for exceptions | |
495 | :param str encoding: Encoding to use | |
496 | :param bool opt: If True, None is allowed | |
497 | :rtype: bytes | |
498 | :raises: :class:`InvalidArgument` | |
499 | """ | |
500 | if opt and val is None: | |
501 | return None | |
502 | if isinstance(val, bytes): | |
503 | return val | |
504 | elif isinstance(val, unicode): | |
505 | return val.encode(encoding) | |
506 | else: | |
507 | raise TypeError('%s must be a string' % name) | |
508 | ||
509 | ||
510 | def cstr_list(list_str, name, encoding="utf-8"): | |
511 | return [cstr(s, name) for s in list_str] | |
512 | ||
513 | ||
514 | def decode_cstr(val, encoding="utf-8"): | |
515 | """ | |
516 | Decode a byte string into a Python string. | |
517 | ||
518 | :param bytes val: byte string | |
519 | :rtype: unicode or None | |
520 | """ | |
521 | if val is None: | |
522 | return None | |
523 | ||
524 | return val.decode(encoding) | |
525 | ||
526 | ||
527 | cdef char* opt_str(s) except? NULL: | |
528 | if s is None: | |
529 | return NULL | |
530 | return s | |
531 | ||
532 | ||
533 | cdef void* realloc_chk(void* ptr, size_t size) except NULL: | |
534 | cdef void *ret = realloc(ptr, size) | |
535 | if ret == NULL: | |
536 | raise MemoryError("realloc failed") | |
537 | return ret | |
538 | ||
539 | ||
540 | cdef size_t * to_csize_t_array(list_int): | |
541 | cdef size_t *ret = <size_t *>malloc(len(list_int) * sizeof(size_t)) | |
542 | if ret == NULL: | |
543 | raise MemoryError("malloc failed") | |
544 | for i in xrange(len(list_int)): | |
545 | ret[i] = <size_t>list_int[i] | |
546 | return ret | |
547 | ||
548 | ||
549 | cdef char ** to_bytes_array(list_bytes): | |
550 | cdef char **ret = <char **>malloc(len(list_bytes) * sizeof(char *)) | |
551 | if ret == NULL: | |
552 | raise MemoryError("malloc failed") | |
553 | for i in xrange(len(list_bytes)): | |
554 | ret[i] = <char *>list_bytes[i] | |
555 | return ret | |
556 | ||
557 | ||
558 | ||
559 | cdef int __monitor_callback(void *arg, const char *line, const char *who, | |
560 | uint64_t sec, uint64_t nsec, uint64_t seq, | |
561 | const char *level, const char *msg) with gil: | |
562 | cdef object cb_info = <object>arg | |
563 | cb_info[0](cb_info[1], line, who, sec, nsec, seq, level, msg) | |
564 | return 0 | |
565 | ||
566 | cdef int __monitor_callback2(void *arg, const char *line, const char *channel, | |
567 | const char *who, | |
568 | const char *name, | |
569 | uint64_t sec, uint64_t nsec, uint64_t seq, | |
570 | const char *level, const char *msg) with gil: | |
571 | cdef object cb_info = <object>arg | |
572 | cb_info[0](cb_info[1], line, channel, name, who, sec, nsec, seq, level, msg) | |
573 | return 0 | |
574 | ||
575 | ||
576 | class Version(object): | |
577 | """ Version information """ | |
578 | def __init__(self, major, minor, extra): | |
579 | self.major = major | |
580 | self.minor = minor | |
581 | self.extra = extra | |
582 | ||
583 | def __str__(self): | |
584 | return "%d.%d.%d" % (self.major, self.minor, self.extra) | |
585 | ||
586 | ||
587 | cdef class Rados(object): | |
588 | """This class wraps librados functions""" | |
589 | # NOTE(sileht): attributes declared in .pyd | |
590 | ||
591 | def __init__(self, *args, **kwargs): | |
592 | PyEval_InitThreads() | |
593 | self.__setup(*args, **kwargs) | |
594 | ||
595 | @requires(('rados_id', opt(str_type)), ('name', opt(str_type)), ('clustername', opt(str_type)), | |
596 | ('conffile', opt(str_type))) | |
597 | def __setup(self, rados_id=None, name=None, clustername=None, | |
598 | conf_defaults=None, conffile=None, conf=None, flags=0, | |
599 | context=None): | |
600 | self.monitor_callback = None | |
601 | self.monitor_callback2 = None | |
602 | self.parsed_args = [] | |
603 | self.conf_defaults = conf_defaults | |
604 | self.conffile = conffile | |
605 | self.rados_id = rados_id | |
606 | ||
607 | if rados_id and name: | |
608 | raise Error("Rados(): can't supply both rados_id and name") | |
609 | elif rados_id: | |
610 | name = 'client.' + rados_id | |
611 | elif name is None: | |
612 | name = 'client.admin' | |
613 | if clustername is None: | |
614 | clustername = '' | |
615 | ||
616 | name = cstr(name, 'name') | |
617 | clustername = cstr(clustername, 'clustername') | |
618 | cdef: | |
619 | char *_name = name | |
620 | char *_clustername = clustername | |
621 | int _flags = flags | |
622 | int ret | |
623 | ||
624 | if context: | |
625 | # Unpack void* (aka rados_config_t) from capsule | |
626 | rados_config = <rados_config_t> PyCapsule_GetPointer(context, NULL) | |
627 | with nogil: | |
628 | ret = rados_create_with_context(&self.cluster, rados_config) | |
629 | else: | |
630 | with nogil: | |
631 | ret = rados_create2(&self.cluster, _clustername, _name, _flags) | |
632 | if ret != 0: | |
633 | raise Error("rados_initialize failed with error code: %d" % ret) | |
634 | ||
635 | self.state = "configuring" | |
636 | # order is important: conf_defaults, then conffile, then conf | |
637 | if conf_defaults: | |
638 | for key, value in conf_defaults.items(): | |
639 | self.conf_set(key, value) | |
640 | if conffile is not None: | |
641 | # read the default conf file when '' is given | |
642 | if conffile == '': | |
643 | conffile = None | |
644 | self.conf_read_file(conffile) | |
645 | if conf: | |
646 | for key, value in conf.items(): | |
647 | self.conf_set(key, value) | |
648 | ||
649 | def require_state(self, *args): | |
650 | """ | |
651 | Checks if the Rados object is in a special state | |
652 | ||
653 | :raises: RadosStateError | |
654 | """ | |
655 | if self.state in args: | |
656 | return | |
657 | raise RadosStateError("You cannot perform that operation on a \ | |
658 | Rados object in state %s." % self.state) | |
659 | ||
660 | def shutdown(self): | |
661 | """ | |
662 | Disconnects from the cluster. Call this explicitly when a | |
663 | Rados.connect()ed object is no longer used. | |
664 | """ | |
665 | if self.state != "shutdown": | |
666 | with nogil: | |
667 | rados_shutdown(self.cluster) | |
668 | self.state = "shutdown" | |
669 | ||
670 | def __enter__(self): | |
671 | self.connect() | |
672 | return self | |
673 | ||
674 | def __exit__(self, type_, value, traceback): | |
675 | self.shutdown() | |
676 | return False | |
677 | ||
678 | def version(self): | |
679 | """ | |
680 | Get the version number of the ``librados`` C library. | |
681 | ||
682 | :returns: a tuple of ``(major, minor, extra)`` components of the | |
683 | librados version | |
684 | """ | |
685 | cdef int major = 0 | |
686 | cdef int minor = 0 | |
687 | cdef int extra = 0 | |
688 | with nogil: | |
689 | rados_version(&major, &minor, &extra) | |
690 | return Version(major, minor, extra) | |
691 | ||
692 | @requires(('path', opt(str_type))) | |
693 | def conf_read_file(self, path=None): | |
694 | """ | |
695 | Configure the cluster handle using a Ceph config file. | |
696 | ||
697 | :param path: path to the config file | |
698 | :type path: str | |
699 | """ | |
700 | self.require_state("configuring", "connected") | |
701 | path = cstr(path, 'path', opt=True) | |
702 | cdef: | |
703 | char *_path = opt_str(path) | |
704 | with nogil: | |
705 | ret = rados_conf_read_file(self.cluster, _path) | |
706 | if ret != 0: | |
707 | raise make_ex(ret, "error calling conf_read_file") | |
708 | ||
709 | def conf_parse_argv(self, args): | |
710 | """ | |
711 | Parse known arguments from args, and remove; returned | |
712 | args contain only those unknown to ceph | |
713 | """ | |
714 | self.require_state("configuring", "connected") | |
715 | if not args: | |
716 | return | |
717 | ||
718 | cargs = cstr_list(args, 'args') | |
719 | cdef: | |
720 | int _argc = len(args) | |
721 | char **_argv = to_bytes_array(cargs) | |
722 | char **_remargv = NULL | |
723 | ||
724 | try: | |
725 | _remargv = <char **>malloc(_argc * sizeof(char *)) | |
726 | with nogil: | |
727 | ret = rados_conf_parse_argv_remainder(self.cluster, _argc, | |
728 | <const char**>_argv, | |
729 | <const char**>_remargv) | |
730 | if ret: | |
731 | raise make_ex(ret, "error calling conf_parse_argv_remainder") | |
732 | ||
733 | # _remargv was allocated with fixed argc; collapse return | |
734 | # list to eliminate any missing args | |
735 | retargs = [decode_cstr(a) for a in _remargv[:_argc] | |
736 | if a != NULL] | |
737 | self.parsed_args = args | |
738 | return retargs | |
739 | finally: | |
740 | free(_argv) | |
741 | free(_remargv) | |
742 | ||
743 | def conf_parse_env(self, var='CEPH_ARGS'): | |
744 | """ | |
745 | Parse known arguments from an environment variable, normally | |
746 | CEPH_ARGS. | |
747 | """ | |
748 | self.require_state("configuring", "connected") | |
749 | if not var: | |
750 | return | |
751 | ||
752 | var = cstr(var, 'var') | |
753 | cdef: | |
754 | char *_var = var | |
755 | with nogil: | |
756 | ret = rados_conf_parse_env(self.cluster, _var) | |
757 | if ret != 0: | |
758 | raise make_ex(ret, "error calling conf_parse_env") | |
759 | ||
760 | @requires(('option', str_type)) | |
761 | def conf_get(self, option): | |
762 | """ | |
763 | Get the value of a configuration option | |
764 | ||
765 | :param option: which option to read | |
766 | :type option: str | |
767 | ||
768 | :returns: str - value of the option or None | |
769 | :raises: :class:`TypeError` | |
770 | """ | |
771 | self.require_state("configuring", "connected") | |
772 | option = cstr(option, 'option') | |
773 | cdef: | |
774 | char *_option = option | |
775 | size_t length = 20 | |
776 | char *ret_buf = NULL | |
777 | ||
778 | try: | |
779 | while True: | |
780 | ret_buf = <char *>realloc_chk(ret_buf, length) | |
781 | with nogil: | |
782 | ret = rados_conf_get(self.cluster, _option, ret_buf, length) | |
783 | if ret == 0: | |
784 | return decode_cstr(ret_buf) | |
785 | elif ret == -errno.ENAMETOOLONG: | |
786 | length = length * 2 | |
787 | elif ret == -errno.ENOENT: | |
788 | return None | |
789 | else: | |
790 | raise make_ex(ret, "error calling conf_get") | |
791 | finally: | |
792 | free(ret_buf) | |
793 | ||
794 | @requires(('option', str_type), ('val', str_type)) | |
795 | def conf_set(self, option, val): | |
796 | """ | |
797 | Set the value of a configuration option | |
798 | ||
799 | :param option: which option to set | |
800 | :type option: str | |
801 | :param option: value of the option | |
802 | :type option: str | |
803 | ||
804 | :raises: :class:`TypeError`, :class:`ObjectNotFound` | |
805 | """ | |
806 | self.require_state("configuring", "connected") | |
807 | option = cstr(option, 'option') | |
808 | val = cstr(val, 'val') | |
809 | cdef: | |
810 | char *_option = option | |
811 | char *_val = val | |
812 | ||
813 | with nogil: | |
814 | ret = rados_conf_set(self.cluster, _option, _val) | |
815 | if ret != 0: | |
816 | raise make_ex(ret, "error calling conf_set") | |
817 | ||
818 | def ping_monitor(self, mon_id): | |
819 | """ | |
820 | Ping a monitor to assess liveness | |
821 | ||
822 | May be used as a simply way to assess liveness, or to obtain | |
823 | information about the monitor in a simple way even in the | |
824 | absence of quorum. | |
825 | ||
826 | :param mon_id: the ID portion of the monitor's name (i.e., mon.<ID>) | |
827 | :type mon_id: str | |
828 | :returns: the string reply from the monitor | |
829 | """ | |
830 | ||
831 | self.require_state("configuring", "connected") | |
832 | ||
833 | mon_id = cstr(mon_id, 'mon_id') | |
834 | cdef: | |
835 | char *_mon_id = mon_id | |
836 | size_t outstrlen = 0 | |
837 | char *outstr | |
838 | ||
839 | with nogil: | |
840 | ret = rados_ping_monitor(self.cluster, _mon_id, &outstr, &outstrlen) | |
841 | ||
842 | if ret != 0: | |
843 | raise make_ex(ret, "error calling ping_monitor") | |
844 | ||
845 | if outstrlen: | |
846 | my_outstr = outstr[:outstrlen] | |
847 | rados_buffer_free(outstr) | |
848 | return decode_cstr(my_outstr) | |
849 | ||
850 | def connect(self, timeout=0): | |
851 | """ | |
852 | Connect to the cluster. Use shutdown() to release resources. | |
853 | """ | |
854 | self.require_state("configuring") | |
855 | # NOTE(sileht): timeout was supported by old python API, | |
856 | # but this is not something available in C API, so ignore | |
857 | # for now and remove it later | |
858 | with nogil: | |
859 | ret = rados_connect(self.cluster) | |
860 | if ret != 0: | |
861 | raise make_ex(ret, "error connecting to the cluster") | |
862 | self.state = "connected" | |
863 | ||
864 | def get_cluster_stats(self): | |
865 | """ | |
866 | Read usage info about the cluster | |
867 | ||
868 | This tells you total space, space used, space available, and number | |
869 | of objects. These are not updated immediately when data is written, | |
870 | they are eventually consistent. | |
871 | ||
872 | :returns: dict - contains the following keys: | |
873 | ||
874 | - ``kb`` (int) - total space | |
875 | ||
876 | - ``kb_used`` (int) - space used | |
877 | ||
878 | - ``kb_avail`` (int) - free space available | |
879 | ||
880 | - ``num_objects`` (int) - number of objects | |
881 | ||
882 | """ | |
883 | cdef: | |
884 | rados_cluster_stat_t stats | |
885 | ||
886 | with nogil: | |
887 | ret = rados_cluster_stat(self.cluster, &stats) | |
888 | ||
889 | if ret < 0: | |
890 | raise make_ex( | |
891 | ret, "Rados.get_cluster_stats(%s): get_stats failed" % self.rados_id) | |
892 | return {'kb': stats.kb, | |
893 | 'kb_used': stats.kb_used, | |
894 | 'kb_avail': stats.kb_avail, | |
895 | 'num_objects': stats.num_objects} | |
896 | ||
897 | @requires(('pool_name', str_type)) | |
898 | def pool_exists(self, pool_name): | |
899 | """ | |
900 | Checks if a given pool exists. | |
901 | ||
902 | :param pool_name: name of the pool to check | |
903 | :type pool_name: str | |
904 | ||
905 | :raises: :class:`TypeError`, :class:`Error` | |
906 | :returns: bool - whether the pool exists, false otherwise. | |
907 | """ | |
908 | self.require_state("connected") | |
909 | ||
910 | pool_name = cstr(pool_name, 'pool_name') | |
911 | cdef: | |
912 | char *_pool_name = pool_name | |
913 | ||
914 | with nogil: | |
915 | ret = rados_pool_lookup(self.cluster, _pool_name) | |
916 | if ret >= 0: | |
917 | return True | |
918 | elif ret == -errno.ENOENT: | |
919 | return False | |
920 | else: | |
921 | raise make_ex(ret, "error looking up pool '%s'" % pool_name) | |
922 | ||
923 | @requires(('pool_name', str_type)) | |
924 | def pool_lookup(self, pool_name): | |
925 | """ | |
926 | Returns a pool's ID based on its name. | |
927 | ||
928 | :param pool_name: name of the pool to look up | |
929 | :type pool_name: str | |
930 | ||
931 | :raises: :class:`TypeError`, :class:`Error` | |
932 | :returns: int - pool ID, or None if it doesn't exist | |
933 | """ | |
934 | self.require_state("connected") | |
935 | pool_name = cstr(pool_name, 'pool_name') | |
936 | cdef: | |
937 | char *_pool_name = pool_name | |
938 | ||
939 | with nogil: | |
940 | ret = rados_pool_lookup(self.cluster, _pool_name) | |
941 | if ret >= 0: | |
942 | return int(ret) | |
943 | elif ret == -errno.ENOENT: | |
944 | return None | |
945 | else: | |
946 | raise make_ex(ret, "error looking up pool '%s'" % pool_name) | |
947 | ||
948 | @requires(('pool_id', int)) | |
949 | def pool_reverse_lookup(self, pool_id): | |
950 | """ | |
951 | Returns a pool's name based on its ID. | |
952 | ||
953 | :param pool_id: ID of the pool to look up | |
954 | :type pool_id: int | |
955 | ||
956 | :raises: :class:`TypeError`, :class:`Error` | |
957 | :returns: string - pool name, or None if it doesn't exist | |
958 | """ | |
959 | self.require_state("connected") | |
960 | cdef: | |
961 | int64_t _pool_id = pool_id | |
962 | size_t size = 512 | |
963 | char *name = NULL | |
964 | ||
965 | try: | |
966 | while True: | |
967 | name = <char *>realloc_chk(name, size) | |
968 | with nogil: | |
969 | ret = rados_pool_reverse_lookup(self.cluster, _pool_id, name, size) | |
970 | if ret >= 0: | |
971 | break | |
972 | elif ret != -errno.ERANGE and size <= 4096: | |
973 | size *= 2 | |
974 | elif ret == -errno.ENOENT: | |
975 | return None | |
976 | elif ret < 0: | |
977 | raise make_ex(ret, "error reverse looking up pool '%s'" % pool_id) | |
978 | ||
979 | return decode_cstr(name) | |
980 | ||
981 | finally: | |
982 | free(name) | |
983 | ||
984 | @requires(('pool_name', str_type), ('auid', opt(int)), ('crush_rule', opt(int))) | |
985 | def create_pool(self, pool_name, auid=None, crush_rule=None): | |
986 | """ | |
987 | Create a pool: | |
988 | - with default settings: if auid=None and crush_rule=None | |
989 | - owned by a specific auid: auid given and crush_rule=None | |
990 | - with a specific CRUSH rule: if auid=None and crush_rule given | |
991 | - with a specific CRUSH rule and auid: if auid and crush_rule given | |
992 | ||
993 | :param pool_name: name of the pool to create | |
994 | :type pool_name: str | |
995 | :param auid: the id of the owner of the new pool | |
996 | :type auid: int | |
997 | :param crush_rule: rule to use for placement in the new pool | |
998 | :type crush_rule: int | |
999 | ||
1000 | :raises: :class:`TypeError`, :class:`Error` | |
1001 | """ | |
1002 | self.require_state("connected") | |
1003 | ||
1004 | pool_name = cstr(pool_name, 'pool_name') | |
1005 | cdef: | |
1006 | char *_pool_name = pool_name | |
1007 | uint8_t _crush_rule | |
1008 | uint64_t _auid | |
1009 | ||
1010 | if auid is None and crush_rule is None: | |
1011 | with nogil: | |
1012 | ret = rados_pool_create(self.cluster, _pool_name) | |
1013 | elif auid is None: | |
1014 | _crush_rule = crush_rule | |
1015 | with nogil: | |
1016 | ret = rados_pool_create_with_crush_rule(self.cluster, _pool_name, _crush_rule) | |
1017 | elif crush_rule is None: | |
1018 | _auid = auid | |
1019 | with nogil: | |
1020 | ret = rados_pool_create_with_auid(self.cluster, _pool_name, _auid) | |
1021 | else: | |
1022 | _auid = auid | |
1023 | _crush_rule = crush_rule | |
1024 | with nogil: | |
1025 | ret = rados_pool_create_with_all(self.cluster, _pool_name, _auid, _crush_rule) | |
1026 | if ret < 0: | |
1027 | raise make_ex(ret, "error creating pool '%s'" % pool_name) | |
1028 | ||
1029 | @requires(('pool_id', int)) | |
1030 | def get_pool_base_tier(self, pool_id): | |
1031 | """ | |
1032 | Get base pool | |
1033 | ||
1034 | :returns: base pool, or pool_id if tiering is not configured for the pool | |
1035 | """ | |
1036 | self.require_state("connected") | |
1037 | cdef: | |
1038 | int64_t base_tier = 0 | |
1039 | int64_t _pool_id = pool_id | |
1040 | ||
1041 | with nogil: | |
1042 | ret = rados_pool_get_base_tier(self.cluster, _pool_id, &base_tier) | |
1043 | if ret < 0: | |
1044 | raise make_ex(ret, "get_pool_base_tier(%d)" % pool_id) | |
1045 | return int(base_tier) | |
1046 | ||
1047 | @requires(('pool_name', str_type)) | |
1048 | def delete_pool(self, pool_name): | |
1049 | """ | |
1050 | Delete a pool and all data inside it. | |
1051 | ||
1052 | The pool is removed from the cluster immediately, | |
1053 | but the actual data is deleted in the background. | |
1054 | ||
1055 | :param pool_name: name of the pool to delete | |
1056 | :type pool_name: str | |
1057 | ||
1058 | :raises: :class:`TypeError`, :class:`Error` | |
1059 | """ | |
1060 | self.require_state("connected") | |
1061 | ||
1062 | pool_name = cstr(pool_name, 'pool_name') | |
1063 | cdef: | |
1064 | char *_pool_name = pool_name | |
1065 | ||
1066 | with nogil: | |
1067 | ret = rados_pool_delete(self.cluster, _pool_name) | |
1068 | if ret < 0: | |
1069 | raise make_ex(ret, "error deleting pool '%s'" % pool_name) | |
1070 | ||
1071 | @requires(('pool_id', int)) | |
1072 | def get_inconsistent_pgs(self, pool_id): | |
1073 | """ | |
1074 | List inconsistent placement groups in the given pool | |
1075 | ||
1076 | :param pool_id: ID of the pool in which PGs are listed | |
1077 | :type pool_id: int | |
1078 | :returns: list - inconsistent placement groups | |
1079 | """ | |
1080 | self.require_state("connected") | |
1081 | cdef: | |
1082 | int64_t pool = pool_id | |
1083 | size_t size = 512 | |
1084 | char *pgs = NULL | |
1085 | ||
1086 | try: | |
1087 | while True: | |
1088 | pgs = <char *>realloc_chk(pgs, size); | |
1089 | with nogil: | |
1090 | ret = rados_inconsistent_pg_list(self.cluster, pool, | |
1091 | pgs, size) | |
1092 | if ret > <int>size: | |
1093 | size *= 2 | |
1094 | elif ret >= 0: | |
1095 | break | |
1096 | else: | |
1097 | raise make_ex(ret, "error calling inconsistent_pg_list") | |
1098 | return [pg for pg in decode_cstr(pgs[:ret]).split('\0') if pg] | |
1099 | finally: | |
1100 | free(pgs) | |
1101 | ||
1102 | def list_pools(self): | |
1103 | """ | |
1104 | Gets a list of pool names. | |
1105 | ||
1106 | :returns: list - of pool names. | |
1107 | """ | |
1108 | self.require_state("connected") | |
1109 | cdef: | |
1110 | size_t size = 512 | |
1111 | char *c_names = NULL | |
1112 | ||
1113 | try: | |
1114 | while True: | |
1115 | c_names = <char *>realloc_chk(c_names, size) | |
1116 | with nogil: | |
1117 | ret = rados_pool_list(self.cluster, c_names, size) | |
1118 | if ret > <int>size: | |
1119 | size *= 2 | |
1120 | elif ret >= 0: | |
1121 | break | |
1122 | return [name for name in decode_cstr(c_names[:ret]).split('\0') | |
1123 | if name] | |
1124 | finally: | |
1125 | free(c_names) | |
1126 | ||
1127 | def get_fsid(self): | |
1128 | """ | |
1129 | Get the fsid of the cluster as a hexadecimal string. | |
1130 | ||
1131 | :raises: :class:`Error` | |
1132 | :returns: str - cluster fsid | |
1133 | """ | |
1134 | self.require_state("connected") | |
1135 | cdef: | |
1136 | char *ret_buf | |
1137 | size_t buf_len = 37 | |
1138 | PyObject* ret_s = NULL | |
1139 | ||
1140 | ret_s = PyBytes_FromStringAndSize(NULL, buf_len) | |
1141 | try: | |
1142 | ret_buf = PyBytes_AsString(ret_s) | |
1143 | with nogil: | |
1144 | ret = rados_cluster_fsid(self.cluster, ret_buf, buf_len) | |
1145 | if ret < 0: | |
1146 | raise make_ex(ret, "error getting cluster fsid") | |
1147 | if ret != <int>buf_len: | |
1148 | _PyBytes_Resize(&ret_s, ret) | |
1149 | return <object>ret_s | |
1150 | finally: | |
1151 | # We DECREF unconditionally: the cast to object above will have | |
1152 | # INCREFed if necessary. This also takes care of exceptions, | |
1153 | # including if _PyString_Resize fails (that will free the string | |
1154 | # itself and set ret_s to NULL, hence XDECREF). | |
1155 | ref.Py_XDECREF(ret_s) | |
1156 | ||
1157 | @requires(('ioctx_name', str_type)) | |
1158 | def open_ioctx(self, ioctx_name): | |
1159 | """ | |
1160 | Create an io context | |
1161 | ||
1162 | The io context allows you to perform operations within a particular | |
1163 | pool. | |
1164 | ||
1165 | :param ioctx_name: name of the pool | |
1166 | :type ioctx_name: str | |
1167 | ||
1168 | :raises: :class:`TypeError`, :class:`Error` | |
1169 | :returns: Ioctx - Rados Ioctx object | |
1170 | """ | |
1171 | self.require_state("connected") | |
1172 | ioctx_name = cstr(ioctx_name, 'ioctx_name') | |
1173 | cdef: | |
1174 | rados_ioctx_t ioctx | |
1175 | char *_ioctx_name = ioctx_name | |
1176 | with nogil: | |
1177 | ret = rados_ioctx_create(self.cluster, _ioctx_name, &ioctx) | |
1178 | if ret < 0: | |
1179 | raise make_ex(ret, "error opening pool '%s'" % ioctx_name) | |
1180 | io = Ioctx(ioctx_name) | |
1181 | io.io = ioctx | |
1182 | return io | |
1183 | ||
1184 | def mon_command(self, cmd, inbuf, timeout=0, target=None): | |
1185 | """ | |
1186 | mon_command[_target](cmd, inbuf, outbuf, outbuflen, outs, outslen) | |
1187 | returns (int ret, string outbuf, string outs) | |
1188 | """ | |
1189 | # NOTE(sileht): timeout is ignored because C API doesn't provide | |
1190 | # timeout argument, but we keep it for backward compat with old python binding | |
1191 | ||
1192 | self.require_state("connected") | |
1193 | cmd = cstr_list(cmd, 'c') | |
1194 | ||
1195 | if isinstance(target, int): | |
1196 | # NOTE(sileht): looks weird but test_monmap_dump pass int | |
1197 | target = str(target) | |
1198 | ||
1199 | target = cstr(target, 'target', opt=True) | |
1200 | inbuf = cstr(inbuf, 'inbuf') | |
1201 | ||
1202 | cdef: | |
1203 | char *_target = opt_str(target) | |
1204 | char **_cmd = to_bytes_array(cmd) | |
1205 | size_t _cmdlen = len(cmd) | |
1206 | ||
1207 | char *_inbuf = inbuf | |
1208 | size_t _inbuf_len = len(inbuf) | |
1209 | ||
1210 | char *_outbuf | |
1211 | size_t _outbuf_len | |
1212 | char *_outs | |
1213 | size_t _outs_len | |
1214 | ||
1215 | try: | |
1216 | if target: | |
1217 | with nogil: | |
1218 | ret = rados_mon_command_target(self.cluster, _target, | |
1219 | <const char **>_cmd, _cmdlen, | |
1220 | <const char*>_inbuf, _inbuf_len, | |
1221 | &_outbuf, &_outbuf_len, | |
1222 | &_outs, &_outs_len) | |
1223 | else: | |
1224 | with nogil: | |
1225 | ret = rados_mon_command(self.cluster, | |
1226 | <const char **>_cmd, _cmdlen, | |
1227 | <const char*>_inbuf, _inbuf_len, | |
1228 | &_outbuf, &_outbuf_len, | |
1229 | &_outs, &_outs_len) | |
1230 | ||
1231 | my_outs = decode_cstr(_outs[:_outs_len]) | |
1232 | my_outbuf = _outbuf[:_outbuf_len] | |
1233 | if _outs_len: | |
1234 | rados_buffer_free(_outs) | |
1235 | if _outbuf_len: | |
1236 | rados_buffer_free(_outbuf) | |
1237 | return (ret, my_outbuf, my_outs) | |
1238 | finally: | |
1239 | free(_cmd) | |
1240 | ||
1241 | def osd_command(self, osdid, cmd, inbuf, timeout=0): | |
1242 | """ | |
1243 | osd_command(osdid, cmd, inbuf, outbuf, outbuflen, outs, outslen) | |
1244 | returns (int ret, string outbuf, string outs) | |
1245 | """ | |
1246 | # NOTE(sileht): timeout is ignored because C API doesn't provide | |
1247 | # timeout argument, but we keep it for backward compat with old python binding | |
1248 | self.require_state("connected") | |
1249 | ||
1250 | cmd = cstr_list(cmd, 'cmd') | |
1251 | inbuf = cstr(inbuf, 'inbuf') | |
1252 | ||
1253 | cdef: | |
1254 | int _osdid = osdid | |
1255 | char **_cmd = to_bytes_array(cmd) | |
1256 | size_t _cmdlen = len(cmd) | |
1257 | ||
1258 | char *_inbuf = inbuf | |
1259 | size_t _inbuf_len = len(inbuf) | |
1260 | ||
1261 | char *_outbuf | |
1262 | size_t _outbuf_len | |
1263 | char *_outs | |
1264 | size_t _outs_len | |
1265 | ||
1266 | try: | |
1267 | with nogil: | |
1268 | ret = rados_osd_command(self.cluster, _osdid, | |
1269 | <const char **>_cmd, _cmdlen, | |
1270 | <const char*>_inbuf, _inbuf_len, | |
1271 | &_outbuf, &_outbuf_len, | |
1272 | &_outs, &_outs_len) | |
1273 | ||
1274 | my_outs = decode_cstr(_outs[:_outs_len]) | |
1275 | my_outbuf = _outbuf[:_outbuf_len] | |
1276 | if _outs_len: | |
1277 | rados_buffer_free(_outs) | |
1278 | if _outbuf_len: | |
1279 | rados_buffer_free(_outbuf) | |
1280 | return (ret, my_outbuf, my_outs) | |
1281 | finally: | |
1282 | free(_cmd) | |
1283 | ||
1284 | def mgr_command(self, cmd, inbuf, timeout=0): | |
1285 | """ | |
1286 | returns (int ret, string outbuf, string outs) | |
1287 | """ | |
1288 | # NOTE(sileht): timeout is ignored because C API doesn't provide | |
1289 | # timeout argument, but we keep it for backward compat with old python binding | |
1290 | self.require_state("connected") | |
1291 | ||
1292 | cmd = cstr_list(cmd, 'cmd') | |
1293 | inbuf = cstr(inbuf, 'inbuf') | |
1294 | ||
1295 | cdef: | |
1296 | char **_cmd = to_bytes_array(cmd) | |
1297 | size_t _cmdlen = len(cmd) | |
1298 | ||
1299 | char *_inbuf = inbuf | |
1300 | size_t _inbuf_len = len(inbuf) | |
1301 | ||
1302 | char *_outbuf | |
1303 | size_t _outbuf_len | |
1304 | char *_outs | |
1305 | size_t _outs_len | |
1306 | ||
1307 | try: | |
1308 | with nogil: | |
1309 | ret = rados_mgr_command(self.cluster, | |
1310 | <const char **>_cmd, _cmdlen, | |
1311 | <const char*>_inbuf, _inbuf_len, | |
1312 | &_outbuf, &_outbuf_len, | |
1313 | &_outs, &_outs_len) | |
1314 | ||
1315 | my_outs = decode_cstr(_outs[:_outs_len]) | |
1316 | my_outbuf = _outbuf[:_outbuf_len] | |
1317 | if _outs_len: | |
1318 | rados_buffer_free(_outs) | |
1319 | if _outbuf_len: | |
1320 | rados_buffer_free(_outbuf) | |
1321 | return (ret, my_outbuf, my_outs) | |
1322 | finally: | |
1323 | free(_cmd) | |
1324 | ||
1325 | def pg_command(self, pgid, cmd, inbuf, timeout=0): | |
1326 | """ | |
1327 | pg_command(pgid, cmd, inbuf, outbuf, outbuflen, outs, outslen) | |
1328 | returns (int ret, string outbuf, string outs) | |
1329 | """ | |
1330 | # NOTE(sileht): timeout is ignored because C API doesn't provide | |
1331 | # timeout argument, but we keep it for backward compat with old python binding | |
1332 | self.require_state("connected") | |
1333 | ||
1334 | pgid = cstr(pgid, 'pgid') | |
1335 | cmd = cstr_list(cmd, 'cmd') | |
1336 | inbuf = cstr(inbuf, 'inbuf') | |
1337 | ||
1338 | cdef: | |
1339 | char *_pgid = pgid | |
1340 | char **_cmd = to_bytes_array(cmd) | |
1341 | size_t _cmdlen = len(cmd) | |
1342 | ||
1343 | char *_inbuf = inbuf | |
1344 | size_t _inbuf_len = len(inbuf) | |
1345 | ||
1346 | char *_outbuf | |
1347 | size_t _outbuf_len | |
1348 | char *_outs | |
1349 | size_t _outs_len | |
1350 | ||
1351 | try: | |
1352 | with nogil: | |
1353 | ret = rados_pg_command(self.cluster, _pgid, | |
1354 | <const char **>_cmd, _cmdlen, | |
1355 | <const char *>_inbuf, _inbuf_len, | |
1356 | &_outbuf, &_outbuf_len, | |
1357 | &_outs, &_outs_len) | |
1358 | ||
1359 | my_outs = decode_cstr(_outs[:_outs_len]) | |
1360 | my_outbuf = _outbuf[:_outbuf_len] | |
1361 | if _outs_len: | |
1362 | rados_buffer_free(_outs) | |
1363 | if _outbuf_len: | |
1364 | rados_buffer_free(_outbuf) | |
1365 | return (ret, my_outbuf, my_outs) | |
1366 | finally: | |
1367 | free(_cmd) | |
1368 | ||
1369 | def wait_for_latest_osdmap(self): | |
1370 | self.require_state("connected") | |
1371 | with nogil: | |
1372 | ret = rados_wait_for_latest_osdmap(self.cluster) | |
1373 | return ret | |
1374 | ||
1375 | def blacklist_add(self, client_address, expire_seconds=0): | |
1376 | """ | |
1377 | Blacklist a client from the OSDs | |
1378 | ||
1379 | :param client_address: client address | |
1380 | :type client_address: str | |
1381 | :param expire_seconds: number of seconds to blacklist | |
1382 | :type expire_seconds: int | |
1383 | ||
1384 | :raises: :class:`Error` | |
1385 | """ | |
1386 | self.require_state("connected") | |
1387 | client_address = cstr(client_address, 'client_address') | |
1388 | cdef: | |
1389 | uint32_t _expire_seconds = expire_seconds | |
1390 | char *_client_address = client_address | |
1391 | ||
1392 | with nogil: | |
1393 | ret = rados_blacklist_add(self.cluster, _client_address, _expire_seconds) | |
1394 | if ret < 0: | |
1395 | raise make_ex(ret, "error blacklisting client '%s'" % client_address) | |
1396 | ||
1397 | def monitor_log(self, level, callback, arg): | |
1398 | if level not in MONITOR_LEVELS: | |
1399 | raise LogicError("invalid monitor level " + level) | |
1400 | if callback is not None and not callable(callback): | |
1401 | raise LogicError("callback must be a callable function or None") | |
1402 | ||
1403 | level = cstr(level, 'level') | |
1404 | cdef char *_level = level | |
1405 | ||
1406 | if callback is None: | |
1407 | with nogil: | |
1408 | r = rados_monitor_log(self.cluster, <const char*>_level, NULL, NULL) | |
1409 | self.monitor_callback = None | |
1410 | self.monitor_callback2 = None | |
1411 | return | |
1412 | ||
1413 | cb = (callback, arg) | |
1414 | cdef PyObject* _arg = <PyObject*>cb | |
1415 | with nogil: | |
1416 | r = rados_monitor_log(self.cluster, <const char*>_level, | |
1417 | <rados_log_callback_t>&__monitor_callback, _arg) | |
1418 | ||
1419 | if r: | |
1420 | raise make_ex(r, 'error calling rados_monitor_log') | |
1421 | # NOTE(sileht): Prevents the callback method from being garbage collected | |
1422 | self.monitor_callback = cb | |
1423 | self.monitor_callback2 = None | |
1424 | ||
1425 | def monitor_log2(self, level, callback, arg): | |
1426 | if level not in MONITOR_LEVELS: | |
1427 | raise LogicError("invalid monitor level " + level) | |
1428 | if callback is not None and not callable(callback): | |
1429 | raise LogicError("callback must be a callable function or None") | |
1430 | ||
1431 | level = cstr(level, 'level') | |
1432 | cdef char *_level = level | |
1433 | ||
1434 | if callback is None: | |
1435 | with nogil: | |
1436 | r = rados_monitor_log2(self.cluster, <const char*>_level, NULL, NULL) | |
1437 | self.monitor_callback = None | |
1438 | self.monitor_callback2 = None | |
1439 | return | |
1440 | ||
1441 | cb = (callback, arg) | |
1442 | cdef PyObject* _arg = <PyObject*>cb | |
1443 | with nogil: | |
1444 | r = rados_monitor_log2(self.cluster, <const char*>_level, | |
1445 | <rados_log_callback2_t>&__monitor_callback2, _arg) | |
1446 | ||
1447 | if r: | |
1448 | raise make_ex(r, 'error calling rados_monitor_log') | |
1449 | # NOTE(sileht): Prevents the callback method from being garbage collected | |
1450 | self.monitor_callback = None | |
1451 | self.monitor_callback2 = cb | |
1452 | ||
1453 | ||
1454 | cdef class OmapIterator(object): | |
1455 | """Omap iterator""" | |
1456 | ||
1457 | cdef public Ioctx ioctx | |
1458 | cdef rados_omap_iter_t ctx | |
1459 | ||
1460 | def __cinit__(self, Ioctx ioctx): | |
1461 | self.ioctx = ioctx | |
1462 | ||
1463 | def __iter__(self): | |
1464 | return self | |
1465 | ||
1466 | def __next__(self): | |
1467 | """ | |
1468 | Get the next key-value pair in the object | |
1469 | :returns: next rados.OmapItem | |
1470 | """ | |
1471 | cdef: | |
1472 | char *key_ = NULL | |
1473 | char *val_ = NULL | |
1474 | size_t len_ | |
1475 | ||
1476 | with nogil: | |
1477 | ret = rados_omap_get_next(self.ctx, &key_, &val_, &len_) | |
1478 | ||
1479 | if ret != 0: | |
1480 | raise make_ex(ret, "error iterating over the omap") | |
1481 | if key_ == NULL: | |
1482 | raise StopIteration() | |
1483 | key = decode_cstr(key_) | |
1484 | val = None | |
1485 | if val_ != NULL: | |
1486 | val = val_[:len_] | |
1487 | return (key, val) | |
1488 | ||
1489 | def __dealloc__(self): | |
1490 | with nogil: | |
1491 | rados_omap_get_end(self.ctx) | |
1492 | ||
1493 | ||
1494 | cdef class ObjectIterator(object): | |
1495 | """rados.Ioctx Object iterator""" | |
1496 | ||
1497 | cdef rados_list_ctx_t ctx | |
1498 | ||
1499 | cdef public object ioctx | |
1500 | ||
1501 | def __cinit__(self, Ioctx ioctx): | |
1502 | self.ioctx = ioctx | |
1503 | ||
1504 | with nogil: | |
1505 | ret = rados_nobjects_list_open(ioctx.io, &self.ctx) | |
1506 | if ret < 0: | |
1507 | raise make_ex(ret, "error iterating over the objects in ioctx '%s'" | |
1508 | % self.ioctx.name) | |
1509 | ||
1510 | def __iter__(self): | |
1511 | return self | |
1512 | ||
1513 | def __next__(self): | |
1514 | """ | |
1515 | Get the next object name and locator in the pool | |
1516 | ||
1517 | :raises: StopIteration | |
1518 | :returns: next rados.Ioctx Object | |
1519 | """ | |
1520 | cdef: | |
1521 | const char *key_ = NULL | |
1522 | const char *locator_ = NULL | |
1523 | const char *nspace_ = NULL | |
1524 | ||
1525 | with nogil: | |
1526 | ret = rados_nobjects_list_next(self.ctx, &key_, &locator_, &nspace_) | |
1527 | ||
1528 | if ret < 0: | |
1529 | raise StopIteration() | |
1530 | ||
1531 | key = decode_cstr(key_) | |
1532 | locator = decode_cstr(locator_) if locator_ != NULL else None | |
1533 | nspace = decode_cstr(nspace_) if nspace_ != NULL else None | |
1534 | return Object(self.ioctx, key, locator, nspace) | |
1535 | ||
1536 | def __dealloc__(self): | |
1537 | with nogil: | |
1538 | rados_nobjects_list_close(self.ctx) | |
1539 | ||
1540 | ||
1541 | cdef class XattrIterator(object): | |
1542 | """Extended attribute iterator""" | |
1543 | ||
1544 | cdef rados_xattrs_iter_t it | |
1545 | cdef char* _oid | |
1546 | ||
1547 | cdef public Ioctx ioctx | |
1548 | cdef public object oid | |
1549 | ||
1550 | def __cinit__(self, Ioctx ioctx, oid): | |
1551 | self.ioctx = ioctx | |
1552 | self.oid = cstr(oid, 'oid') | |
1553 | self._oid = self.oid | |
1554 | ||
1555 | with nogil: | |
1556 | ret = rados_getxattrs(ioctx.io, self._oid, &self.it) | |
1557 | if ret != 0: | |
1558 | raise make_ex(ret, "Failed to get rados xattrs for object %r" % oid) | |
1559 | ||
1560 | def __iter__(self): | |
1561 | return self | |
1562 | ||
1563 | def __next__(self): | |
1564 | """ | |
1565 | Get the next xattr on the object | |
1566 | ||
1567 | :raises: StopIteration | |
1568 | :returns: pair - of name and value of the next Xattr | |
1569 | """ | |
1570 | cdef: | |
1571 | const char *name_ = NULL | |
1572 | const char *val_ = NULL | |
1573 | size_t len_ = 0 | |
1574 | ||
1575 | with nogil: | |
1576 | ret = rados_getxattrs_next(self.it, &name_, &val_, &len_) | |
1577 | if ret != 0: | |
1578 | raise make_ex(ret, "error iterating over the extended attributes \ | |
1579 | in '%s'" % self.oid) | |
1580 | if name_ == NULL: | |
1581 | raise StopIteration() | |
1582 | name = decode_cstr(name_) | |
1583 | val = val_[:len_] | |
1584 | return (name, val) | |
1585 | ||
1586 | def __dealloc__(self): | |
1587 | with nogil: | |
1588 | rados_getxattrs_end(self.it) | |
1589 | ||
1590 | ||
1591 | cdef class SnapIterator(object): | |
1592 | """Snapshot iterator""" | |
1593 | ||
1594 | cdef public Ioctx ioctx | |
1595 | ||
1596 | cdef rados_snap_t *snaps | |
1597 | cdef int max_snap | |
1598 | cdef int cur_snap | |
1599 | ||
1600 | def __cinit__(self, Ioctx ioctx): | |
1601 | self.ioctx = ioctx | |
1602 | # We don't know how big a buffer we need until we've called the | |
1603 | # function. So use the exponential doubling strategy. | |
1604 | cdef int num_snaps = 10 | |
1605 | while True: | |
1606 | self.snaps = <rados_snap_t*>realloc_chk(self.snaps, | |
1607 | num_snaps * | |
1608 | sizeof(rados_snap_t)) | |
1609 | ||
1610 | with nogil: | |
1611 | ret = rados_ioctx_snap_list(ioctx.io, self.snaps, num_snaps) | |
1612 | if ret >= 0: | |
1613 | self.max_snap = ret | |
1614 | break | |
1615 | elif ret != -errno.ERANGE: | |
1616 | raise make_ex(ret, "error calling rados_snap_list for \ | |
1617 | ioctx '%s'" % self.ioctx.name) | |
1618 | num_snaps = num_snaps * 2 | |
1619 | self.cur_snap = 0 | |
1620 | ||
1621 | def __iter__(self): | |
1622 | return self | |
1623 | ||
1624 | def __next__(self): | |
1625 | """ | |
1626 | Get the next Snapshot | |
1627 | ||
1628 | :raises: :class:`Error`, StopIteration | |
1629 | :returns: Snap - next snapshot | |
1630 | """ | |
1631 | if self.cur_snap >= self.max_snap: | |
1632 | raise StopIteration | |
1633 | ||
1634 | cdef: | |
1635 | rados_snap_t snap_id = self.snaps[self.cur_snap] | |
1636 | int name_len = 10 | |
1637 | char *name = NULL | |
1638 | ||
1639 | try: | |
1640 | while True: | |
1641 | name = <char *>realloc_chk(name, name_len) | |
1642 | with nogil: | |
1643 | ret = rados_ioctx_snap_get_name(self.ioctx.io, snap_id, name, name_len) | |
1644 | if ret == 0: | |
1645 | break | |
1646 | elif ret != -errno.ERANGE: | |
1647 | raise make_ex(ret, "rados_snap_get_name error") | |
1648 | else: | |
1649 | name_len = name_len * 2 | |
1650 | ||
1651 | snap = Snap(self.ioctx, decode_cstr(name[:name_len]).rstrip('\0'), snap_id) | |
1652 | self.cur_snap = self.cur_snap + 1 | |
1653 | return snap | |
1654 | finally: | |
1655 | free(name) | |
1656 | ||
1657 | ||
1658 | cdef class Snap(object): | |
1659 | """Snapshot object""" | |
1660 | cdef public Ioctx ioctx | |
1661 | cdef public object name | |
1662 | ||
1663 | # NOTE(sileht): old API was storing the ctypes object | |
1664 | # instead of the value .... | |
1665 | cdef public rados_snap_t snap_id | |
1666 | ||
1667 | def __cinit__(self, Ioctx ioctx, object name, rados_snap_t snap_id): | |
1668 | self.ioctx = ioctx | |
1669 | self.name = name | |
1670 | self.snap_id = snap_id | |
1671 | ||
1672 | def __str__(self): | |
1673 | return "rados.Snap(ioctx=%s,name=%s,snap_id=%d)" \ | |
1674 | % (str(self.ioctx), self.name, self.snap_id) | |
1675 | ||
1676 | def get_timestamp(self): | |
1677 | """ | |
1678 | Find when a snapshot in the current pool occurred | |
1679 | ||
1680 | :raises: :class:`Error` | |
1681 | :returns: datetime - the data and time the snapshot was created | |
1682 | """ | |
1683 | cdef time_t snap_time | |
1684 | ||
1685 | with nogil: | |
1686 | ret = rados_ioctx_snap_get_stamp(self.ioctx.io, self.snap_id, &snap_time) | |
1687 | if ret != 0: | |
1688 | raise make_ex(ret, "rados_ioctx_snap_get_stamp error") | |
1689 | return datetime.fromtimestamp(snap_time) | |
1690 | ||
1691 | ||
1692 | cdef class Completion(object): | |
1693 | """completion object""" | |
1694 | ||
1695 | cdef public: | |
1696 | Ioctx ioctx | |
1697 | object oncomplete | |
1698 | object onsafe | |
1699 | ||
1700 | cdef: | |
1701 | rados_callback_t complete_cb | |
1702 | rados_callback_t safe_cb | |
1703 | rados_completion_t rados_comp | |
1704 | PyObject* buf | |
1705 | ||
1706 | def __cinit__(self, Ioctx ioctx, object oncomplete, object onsafe): | |
1707 | self.oncomplete = oncomplete | |
1708 | self.onsafe = onsafe | |
1709 | self.ioctx = ioctx | |
1710 | ||
1711 | def is_safe(self): | |
1712 | """ | |
1713 | Is an asynchronous operation safe? | |
1714 | ||
1715 | This does not imply that the safe callback has finished. | |
1716 | ||
1717 | :returns: True if the operation is safe | |
1718 | """ | |
1719 | with nogil: | |
1720 | ret = rados_aio_is_safe(self.rados_comp) | |
1721 | return ret == 1 | |
1722 | ||
1723 | def is_complete(self): | |
1724 | """ | |
1725 | Has an asynchronous operation completed? | |
1726 | ||
1727 | This does not imply that the safe callback has finished. | |
1728 | ||
1729 | :returns: True if the operation is completed | |
1730 | """ | |
1731 | with nogil: | |
1732 | ret = rados_aio_is_complete(self.rados_comp) | |
1733 | return ret == 1 | |
1734 | ||
1735 | def wait_for_safe(self): | |
1736 | """ | |
1737 | Wait for an asynchronous operation to be marked safe | |
1738 | ||
1739 | This does not imply that the safe callback has finished. | |
1740 | """ | |
1741 | with nogil: | |
1742 | rados_aio_wait_for_safe(self.rados_comp) | |
1743 | ||
1744 | def wait_for_complete(self): | |
1745 | """ | |
1746 | Wait for an asynchronous operation to complete | |
1747 | ||
1748 | This does not imply that the complete callback has finished. | |
1749 | """ | |
1750 | with nogil: | |
1751 | rados_aio_wait_for_complete(self.rados_comp) | |
1752 | ||
1753 | def wait_for_safe_and_cb(self): | |
1754 | """ | |
1755 | Wait for an asynchronous operation to be marked safe and for | |
1756 | the safe callback to have returned | |
1757 | """ | |
1758 | with nogil: | |
1759 | rados_aio_wait_for_safe_and_cb(self.rados_comp) | |
1760 | ||
1761 | def wait_for_complete_and_cb(self): | |
1762 | """ | |
1763 | Wait for an asynchronous operation to complete and for the | |
1764 | complete callback to have returned | |
1765 | ||
1766 | :returns: whether the operation is completed | |
1767 | """ | |
1768 | with nogil: | |
1769 | ret = rados_aio_wait_for_complete_and_cb(self.rados_comp) | |
1770 | return ret | |
1771 | ||
1772 | def get_return_value(self): | |
1773 | """ | |
1774 | Get the return value of an asychronous operation | |
1775 | ||
1776 | The return value is set when the operation is complete or safe, | |
1777 | whichever comes first. | |
1778 | ||
1779 | :returns: int - return value of the operation | |
1780 | """ | |
1781 | with nogil: | |
1782 | ret = rados_aio_get_return_value(self.rados_comp) | |
1783 | return ret | |
1784 | ||
1785 | def __dealloc__(self): | |
1786 | """ | |
1787 | Release a completion | |
1788 | ||
1789 | Call this when you no longer need the completion. It may not be | |
1790 | freed immediately if the operation is not acked and committed. | |
1791 | """ | |
1792 | ref.Py_XDECREF(self.buf) | |
1793 | self.buf = NULL | |
1794 | if self.rados_comp != NULL: | |
1795 | with nogil: | |
1796 | rados_aio_release(self.rados_comp) | |
1797 | self.rados_comp = NULL | |
1798 | ||
1799 | def _complete(self): | |
1800 | self.oncomplete(self) | |
1801 | with self.ioctx.lock: | |
1802 | if self.oncomplete: | |
1803 | self.ioctx.complete_completions.remove(self) | |
1804 | ||
1805 | def _safe(self): | |
1806 | self.onsafe(self) | |
1807 | with self.ioctx.lock: | |
1808 | if self.onsafe: | |
1809 | self.ioctx.safe_completions.remove(self) | |
1810 | ||
1811 | def _cleanup(self): | |
1812 | with self.ioctx.lock: | |
1813 | if self.oncomplete: | |
1814 | self.ioctx.complete_completions.remove(self) | |
1815 | if self.onsafe: | |
1816 | self.ioctx.safe_completions.remove(self) | |
1817 | ||
1818 | ||
1819 | class OpCtx(object): | |
1820 | def __enter__(self): | |
1821 | return self.create() | |
1822 | ||
1823 | def __exit__(self, type, msg, traceback): | |
1824 | self.release() | |
1825 | ||
1826 | ||
1827 | cdef class WriteOp(object): | |
1828 | cdef rados_write_op_t write_op | |
1829 | ||
1830 | def create(self): | |
1831 | with nogil: | |
1832 | self.write_op = rados_create_write_op() | |
1833 | return self | |
1834 | ||
1835 | def release(self): | |
1836 | with nogil: | |
1837 | rados_release_write_op(self.write_op) | |
1838 | ||
1839 | @requires(('exclusive', opt(int))) | |
1840 | def new(self, exclusive=None): | |
1841 | """ | |
1842 | Create the object. | |
1843 | """ | |
1844 | ||
1845 | cdef: | |
1846 | int _exclusive = exclusive | |
1847 | ||
1848 | with nogil: | |
1849 | rados_write_op_create(self.write_op, _exclusive, NULL) | |
1850 | ||
1851 | ||
1852 | def remove(self): | |
1853 | """ | |
1854 | Remove object. | |
1855 | """ | |
1856 | with nogil: | |
1857 | rados_write_op_remove(self.write_op) | |
1858 | ||
1859 | @requires(('flags', int)) | |
1860 | def set_flags(self, flags=LIBRADOS_OPERATION_NOFLAG): | |
1861 | """ | |
1862 | Set flags for the last operation added to this write_op. | |
1863 | :para flags: flags to apply to the last operation | |
1864 | :type flags: int | |
1865 | """ | |
1866 | ||
1867 | cdef: | |
1868 | int _flags = flags | |
1869 | ||
1870 | with nogil: | |
1871 | rados_write_op_set_flags(self.write_op, _flags) | |
1872 | ||
1873 | @requires(('to_write', bytes)) | |
1874 | def append(self, to_write): | |
1875 | """ | |
1876 | Append data to an object synchronously | |
1877 | :param to_write: data to write | |
1878 | :type to_write: bytes | |
1879 | """ | |
1880 | ||
1881 | cdef: | |
1882 | char *_to_write = to_write | |
1883 | size_t length = len(to_write) | |
1884 | ||
1885 | with nogil: | |
1886 | rados_write_op_append(self.write_op, _to_write, length) | |
1887 | ||
1888 | @requires(('to_write', bytes)) | |
1889 | def write_full(self, to_write): | |
1890 | """ | |
1891 | Write whole object, atomically replacing it. | |
1892 | :param to_write: data to write | |
1893 | :type to_write: bytes | |
1894 | """ | |
1895 | ||
1896 | cdef: | |
1897 | char *_to_write = to_write | |
1898 | size_t length = len(to_write) | |
1899 | ||
1900 | with nogil: | |
1901 | rados_write_op_write_full(self.write_op, _to_write, length) | |
1902 | ||
1903 | @requires(('to_write', bytes), ('offset', int)) | |
1904 | def write(self, to_write, offset=0): | |
1905 | """ | |
1906 | Write to offset. | |
1907 | :param to_write: data to write | |
1908 | :type to_write: bytes | |
1909 | :param offset: byte offset in the object to begin writing at | |
1910 | :type offset: int | |
1911 | """ | |
1912 | ||
1913 | cdef: | |
1914 | char *_to_write = to_write | |
1915 | size_t length = len(to_write) | |
1916 | uint64_t _offset = offset | |
1917 | ||
1918 | with nogil: | |
1919 | rados_write_op_write(self.write_op, _to_write, length, _offset) | |
1920 | ||
1921 | @requires(('offset', int), ('length', int)) | |
1922 | def zero(self, offset, length): | |
1923 | """ | |
1924 | Zero part of an object. | |
1925 | :param offset: byte offset in the object to begin writing at | |
1926 | :type offset: int | |
1927 | :param offset: number of zero to write | |
1928 | :type offset: int | |
1929 | """ | |
1930 | ||
1931 | cdef: | |
1932 | size_t _length = length | |
1933 | uint64_t _offset = offset | |
1934 | ||
1935 | with nogil: | |
1936 | rados_write_op_zero(self.write_op, _length, _offset) | |
1937 | ||
1938 | @requires(('offset', int)) | |
1939 | def truncate(self, offset): | |
1940 | """ | |
1941 | Truncate an object. | |
1942 | :param offset: byte offset in the object to begin truncating at | |
1943 | :type offset: int | |
1944 | """ | |
1945 | ||
1946 | cdef: | |
1947 | uint64_t _offset = offset | |
1948 | ||
1949 | with nogil: | |
1950 | rados_write_op_truncate(self.write_op, _offset) | |
1951 | ||
1952 | ||
1953 | class WriteOpCtx(WriteOp, OpCtx): | |
1954 | """write operation context manager""" | |
1955 | ||
1956 | ||
1957 | cdef class ReadOp(object): | |
1958 | cdef rados_read_op_t read_op | |
1959 | ||
1960 | def create(self): | |
1961 | with nogil: | |
1962 | self.read_op = rados_create_read_op() | |
1963 | return self | |
1964 | ||
1965 | def release(self): | |
1966 | with nogil: | |
1967 | rados_release_read_op(self.read_op) | |
1968 | ||
1969 | @requires(('flags', int)) | |
1970 | def set_flags(self, flags=LIBRADOS_OPERATION_NOFLAG): | |
1971 | """ | |
1972 | Set flags for the last operation added to this read_op. | |
1973 | :para flags: flags to apply to the last operation | |
1974 | :type flags: int | |
1975 | """ | |
1976 | ||
1977 | cdef: | |
1978 | int _flags = flags | |
1979 | ||
1980 | with nogil: | |
1981 | rados_read_op_set_flags(self.read_op, _flags) | |
1982 | ||
1983 | ||
1984 | class ReadOpCtx(ReadOp, OpCtx): | |
1985 | """read operation context manager""" | |
1986 | ||
1987 | ||
1988 | cdef int __aio_safe_cb(rados_completion_t completion, void *args) with gil: | |
1989 | """ | |
1990 | Callback to onsafe() for asynchronous operations | |
1991 | """ | |
1992 | cdef object cb = <object>args | |
1993 | cb._safe() | |
1994 | return 0 | |
1995 | ||
1996 | ||
1997 | cdef int __aio_complete_cb(rados_completion_t completion, void *args) with gil: | |
1998 | """ | |
1999 | Callback to oncomplete() for asynchronous operations | |
2000 | """ | |
2001 | cdef object cb = <object>args | |
2002 | cb._complete() | |
2003 | return 0 | |
2004 | ||
2005 | ||
2006 | cdef class Ioctx(object): | |
2007 | """rados.Ioctx object""" | |
2008 | # NOTE(sileht): attributes declared in .pyd | |
2009 | ||
2010 | def __init__(self, name): | |
2011 | self.name = name | |
2012 | self.state = "open" | |
2013 | ||
2014 | self.locator_key = "" | |
2015 | self.nspace = "" | |
2016 | self.lock = threading.Lock() | |
2017 | self.safe_completions = [] | |
2018 | self.complete_completions = [] | |
2019 | ||
2020 | def __enter__(self): | |
2021 | return self | |
2022 | ||
2023 | def __exit__(self, type_, value, traceback): | |
2024 | self.close() | |
2025 | return False | |
2026 | ||
2027 | def __dealloc__(self): | |
2028 | self.close() | |
2029 | ||
2030 | def __track_completion(self, completion_obj): | |
2031 | if completion_obj.oncomplete: | |
2032 | with self.lock: | |
2033 | self.complete_completions.append(completion_obj) | |
2034 | if completion_obj.onsafe: | |
2035 | with self.lock: | |
2036 | self.safe_completions.append(completion_obj) | |
2037 | ||
2038 | def __get_completion(self, oncomplete, onsafe): | |
2039 | """ | |
2040 | Constructs a completion to use with asynchronous operations | |
2041 | ||
2042 | :param oncomplete: what to do when the write is safe and complete in memory | |
2043 | on all replicas | |
2044 | :type oncomplete: completion | |
2045 | :param onsafe: what to do when the write is safe and complete on storage | |
2046 | on all replicas | |
2047 | :type onsafe: completion | |
2048 | ||
2049 | :raises: :class:`Error` | |
2050 | :returns: completion object | |
2051 | """ | |
2052 | ||
2053 | completion_obj = Completion(self, oncomplete, onsafe) | |
2054 | ||
2055 | cdef: | |
2056 | rados_callback_t complete_cb = NULL | |
2057 | rados_callback_t safe_cb = NULL | |
2058 | rados_completion_t completion | |
2059 | PyObject* p_completion_obj= <PyObject*>completion_obj | |
2060 | ||
2061 | if oncomplete: | |
2062 | complete_cb = <rados_callback_t>&__aio_complete_cb | |
2063 | if onsafe: | |
2064 | safe_cb = <rados_callback_t>&__aio_safe_cb | |
2065 | ||
2066 | with nogil: | |
2067 | ret = rados_aio_create_completion(p_completion_obj, complete_cb, safe_cb, | |
2068 | &completion) | |
2069 | if ret < 0: | |
2070 | raise make_ex(ret, "error getting a completion") | |
2071 | ||
2072 | completion_obj.rados_comp = completion | |
2073 | return completion_obj | |
2074 | ||
2075 | @requires(('object_name', str_type), ('oncomplete', opt(Callable))) | |
2076 | def aio_stat(self, object_name, oncomplete): | |
2077 | """ | |
2078 | Asynchronously get object stats (size/mtime) | |
2079 | ||
2080 | oncomplete will be called with the returned size and mtime | |
2081 | as well as the completion: | |
2082 | ||
2083 | oncomplete(completion, size, mtime) | |
2084 | ||
2085 | :param object_name: the name of the object to get stats from | |
2086 | :type object_name: str | |
2087 | :param oncomplete: what to do when the stat is complete | |
2088 | :type oncomplete: completion | |
2089 | ||
2090 | :raises: :class:`Error` | |
2091 | :returns: completion object | |
2092 | """ | |
2093 | ||
2094 | object_name = cstr(object_name, 'object_name') | |
2095 | ||
2096 | cdef: | |
2097 | Completion completion | |
2098 | char *_object_name = object_name | |
2099 | uint64_t psize | |
2100 | time_t pmtime | |
2101 | ||
2102 | def oncomplete_(completion_v): | |
2103 | cdef Completion _completion_v = completion_v | |
2104 | return_value = _completion_v.get_return_value() | |
2105 | if return_value >= 0: | |
2106 | return oncomplete(_completion_v, psize, time.localtime(pmtime)) | |
2107 | else: | |
2108 | return oncomplete(_completion_v, None, None) | |
2109 | ||
2110 | completion = self.__get_completion(oncomplete_, None) | |
2111 | self.__track_completion(completion) | |
2112 | with nogil: | |
2113 | ret = rados_aio_stat(self.io, _object_name, completion.rados_comp, | |
2114 | &psize, &pmtime) | |
2115 | ||
2116 | if ret < 0: | |
2117 | completion._cleanup() | |
2118 | raise make_ex(ret, "error stating %s" % object_name) | |
2119 | return completion | |
2120 | ||
2121 | @requires(('object_name', str_type), ('to_write', bytes), ('offset', int), | |
2122 | ('oncomplete', opt(Callable)), ('onsafe', opt(Callable))) | |
2123 | def aio_write(self, object_name, to_write, offset=0, | |
2124 | oncomplete=None, onsafe=None): | |
2125 | """ | |
2126 | Write data to an object asynchronously | |
2127 | ||
2128 | Queues the write and returns. | |
2129 | ||
2130 | :param object_name: name of the object | |
2131 | :type object_name: str | |
2132 | :param to_write: data to write | |
2133 | :type to_write: bytes | |
2134 | :param offset: byte offset in the object to begin writing at | |
2135 | :type offset: int | |
2136 | :param oncomplete: what to do when the write is safe and complete in memory | |
2137 | on all replicas | |
2138 | :type oncomplete: completion | |
2139 | :param onsafe: what to do when the write is safe and complete on storage | |
2140 | on all replicas | |
2141 | :type onsafe: completion | |
2142 | ||
2143 | :raises: :class:`Error` | |
2144 | :returns: completion object | |
2145 | """ | |
2146 | ||
2147 | object_name = cstr(object_name, 'object_name') | |
2148 | ||
2149 | cdef: | |
2150 | Completion completion | |
2151 | char* _object_name = object_name | |
2152 | char* _to_write = to_write | |
2153 | size_t size = len(to_write) | |
2154 | uint64_t _offset = offset | |
2155 | ||
2156 | completion = self.__get_completion(oncomplete, onsafe) | |
2157 | self.__track_completion(completion) | |
2158 | with nogil: | |
2159 | ret = rados_aio_write(self.io, _object_name, completion.rados_comp, | |
2160 | _to_write, size, _offset) | |
2161 | if ret < 0: | |
2162 | completion._cleanup() | |
2163 | raise make_ex(ret, "error writing object %s" % object_name) | |
2164 | return completion | |
2165 | ||
2166 | @requires(('object_name', str_type), ('to_write', bytes), ('oncomplete', opt(Callable)), | |
2167 | ('onsafe', opt(Callable))) | |
2168 | def aio_write_full(self, object_name, to_write, | |
2169 | oncomplete=None, onsafe=None): | |
2170 | """ | |
2171 | Asychronously write an entire object | |
2172 | ||
2173 | The object is filled with the provided data. If the object exists, | |
2174 | it is atomically truncated and then written. | |
2175 | Queues the write and returns. | |
2176 | ||
2177 | :param object_name: name of the object | |
2178 | :type object_name: str | |
2179 | :param to_write: data to write | |
2180 | :type to_write: str | |
2181 | :param oncomplete: what to do when the write is safe and complete in memory | |
2182 | on all replicas | |
2183 | :type oncomplete: completion | |
2184 | :param onsafe: what to do when the write is safe and complete on storage | |
2185 | on all replicas | |
2186 | :type onsafe: completion | |
2187 | ||
2188 | :raises: :class:`Error` | |
2189 | :returns: completion object | |
2190 | """ | |
2191 | ||
2192 | object_name = cstr(object_name, 'object_name') | |
2193 | ||
2194 | cdef: | |
2195 | Completion completion | |
2196 | char* _object_name = object_name | |
2197 | char* _to_write = to_write | |
2198 | size_t size = len(to_write) | |
2199 | ||
2200 | completion = self.__get_completion(oncomplete, onsafe) | |
2201 | self.__track_completion(completion) | |
2202 | with nogil: | |
2203 | ret = rados_aio_write_full(self.io, _object_name, | |
2204 | completion.rados_comp, | |
2205 | _to_write, size) | |
2206 | if ret < 0: | |
2207 | completion._cleanup() | |
2208 | raise make_ex(ret, "error writing object %s" % object_name) | |
2209 | return completion | |
2210 | ||
2211 | @requires(('object_name', str_type), ('to_append', bytes), ('oncomplete', opt(Callable)), | |
2212 | ('onsafe', opt(Callable))) | |
2213 | def aio_append(self, object_name, to_append, oncomplete=None, onsafe=None): | |
2214 | """ | |
2215 | Asychronously append data to an object | |
2216 | ||
2217 | Queues the write and returns. | |
2218 | ||
2219 | :param object_name: name of the object | |
2220 | :type object_name: str | |
2221 | :param to_append: data to append | |
2222 | :type to_append: str | |
2223 | :param offset: byte offset in the object to begin writing at | |
2224 | :type offset: int | |
2225 | :param oncomplete: what to do when the write is safe and complete in memory | |
2226 | on all replicas | |
2227 | :type oncomplete: completion | |
2228 | :param onsafe: what to do when the write is safe and complete on storage | |
2229 | on all replicas | |
2230 | :type onsafe: completion | |
2231 | ||
2232 | :raises: :class:`Error` | |
2233 | :returns: completion object | |
2234 | """ | |
2235 | object_name = cstr(object_name, 'object_name') | |
2236 | ||
2237 | cdef: | |
2238 | Completion completion | |
2239 | char* _object_name = object_name | |
2240 | char* _to_append = to_append | |
2241 | size_t size = len(to_append) | |
2242 | ||
2243 | completion = self.__get_completion(oncomplete, onsafe) | |
2244 | self.__track_completion(completion) | |
2245 | with nogil: | |
2246 | ret = rados_aio_append(self.io, _object_name, | |
2247 | completion.rados_comp, | |
2248 | _to_append, size) | |
2249 | if ret < 0: | |
2250 | completion._cleanup() | |
2251 | raise make_ex(ret, "error appending object %s" % object_name) | |
2252 | return completion | |
2253 | ||
2254 | def aio_flush(self): | |
2255 | """ | |
2256 | Block until all pending writes in an io context are safe | |
2257 | ||
2258 | :raises: :class:`Error` | |
2259 | """ | |
2260 | with nogil: | |
2261 | ret = rados_aio_flush(self.io) | |
2262 | if ret < 0: | |
2263 | raise make_ex(ret, "error flushing") | |
2264 | ||
2265 | @requires(('object_name', str_type), ('length', int), ('offset', int), | |
2266 | ('oncomplete', opt(Callable))) | |
2267 | def aio_read(self, object_name, length, offset, oncomplete): | |
2268 | """ | |
2269 | Asychronously read data from an object | |
2270 | ||
2271 | oncomplete will be called with the returned read value as | |
2272 | well as the completion: | |
2273 | ||
2274 | oncomplete(completion, data_read) | |
2275 | ||
2276 | :param object_name: name of the object to read from | |
2277 | :type object_name: str | |
2278 | :param length: the number of bytes to read | |
2279 | :type length: int | |
2280 | :param offset: byte offset in the object to begin reading from | |
2281 | :type offset: int | |
2282 | :param oncomplete: what to do when the read is complete | |
2283 | :type oncomplete: completion | |
2284 | ||
2285 | :raises: :class:`Error` | |
2286 | :returns: completion object | |
2287 | """ | |
2288 | ||
2289 | object_name = cstr(object_name, 'object_name') | |
2290 | ||
2291 | cdef: | |
2292 | Completion completion | |
2293 | char* _object_name = object_name | |
2294 | uint64_t _offset = offset | |
2295 | ||
2296 | char *ref_buf | |
2297 | size_t _length = length | |
2298 | ||
2299 | def oncomplete_(completion_v): | |
2300 | cdef Completion _completion_v = completion_v | |
2301 | return_value = _completion_v.get_return_value() | |
2302 | if return_value > 0 and return_value != length: | |
2303 | _PyBytes_Resize(&_completion_v.buf, return_value) | |
2304 | return oncomplete(_completion_v, <object>_completion_v.buf if return_value >= 0 else None) | |
2305 | ||
2306 | completion = self.__get_completion(oncomplete_, None) | |
2307 | completion.buf = PyBytes_FromStringAndSize(NULL, length) | |
2308 | ret_buf = PyBytes_AsString(completion.buf) | |
2309 | self.__track_completion(completion) | |
2310 | with nogil: | |
2311 | ret = rados_aio_read(self.io, _object_name, completion.rados_comp, | |
2312 | ret_buf, _length, _offset) | |
2313 | if ret < 0: | |
2314 | completion._cleanup() | |
2315 | raise make_ex(ret, "error reading %s" % object_name) | |
2316 | return completion | |
2317 | ||
2318 | @requires(('object_name', str_type), ('cls', str_type), ('method', str_type), | |
2319 | ('data', bytes), ('length', int), | |
2320 | ('oncomplete', opt(Callable)), ('onsafe', opt(Callable))) | |
2321 | def aio_execute(self, object_name, cls, method, data, | |
2322 | length=8192, oncomplete=None, onsafe=None): | |
2323 | """ | |
2324 | Asynchronously execute an OSD class method on an object. | |
2325 | ||
2326 | oncomplete and onsafe will be called with the data returned from | |
2327 | the plugin as well as the completion: | |
2328 | ||
2329 | oncomplete(completion, data) | |
2330 | onsafe(completion, data) | |
2331 | ||
2332 | :param object_name: name of the object | |
2333 | :type object_name: str | |
2334 | :param cls: name of the object class | |
2335 | :type cls: str | |
2336 | :param method: name of the method | |
2337 | :type method: str | |
2338 | :param data: input data | |
2339 | :type data: bytes | |
2340 | :param length: size of output buffer in bytes (default=8192) | |
2341 | :type length: int | |
2342 | :param oncomplete: what to do when the execution is complete | |
2343 | :type oncomplete: completion | |
2344 | :param onsafe: what to do when the execution is safe and complete | |
2345 | :type onsafe: completion | |
2346 | ||
2347 | :raises: :class:`Error` | |
2348 | :returns: completion object | |
2349 | """ | |
2350 | ||
2351 | object_name = cstr(object_name, 'object_name') | |
2352 | cls = cstr(cls, 'cls') | |
2353 | method = cstr(method, 'method') | |
2354 | cdef: | |
2355 | Completion completion | |
2356 | char *_object_name = object_name | |
2357 | char *_cls = cls | |
2358 | char *_method = method | |
2359 | char *_data = data | |
2360 | size_t _data_len = len(data) | |
2361 | ||
2362 | char *ref_buf | |
2363 | size_t _length = length | |
2364 | ||
2365 | def oncomplete_(completion_v): | |
2366 | cdef Completion _completion_v = completion_v | |
2367 | return_value = _completion_v.get_return_value() | |
2368 | if return_value > 0 and return_value != length: | |
2369 | _PyBytes_Resize(&_completion_v.buf, return_value) | |
2370 | return oncomplete(_completion_v, <object>_completion_v.buf if return_value >= 0 else None) | |
2371 | ||
2372 | def onsafe_(completion_v): | |
2373 | cdef Completion _completion_v = completion_v | |
2374 | return_value = _completion_v.get_return_value() | |
2375 | return onsafe(_completion_v, <object>_completion_v.buf if return_value >= 0 else None) | |
2376 | ||
2377 | completion = self.__get_completion(oncomplete_ if oncomplete else None, onsafe_ if onsafe else None) | |
2378 | completion.buf = PyBytes_FromStringAndSize(NULL, length) | |
2379 | ret_buf = PyBytes_AsString(completion.buf) | |
2380 | self.__track_completion(completion) | |
2381 | with nogil: | |
2382 | ret = rados_aio_exec(self.io, _object_name, completion.rados_comp, | |
2383 | _cls, _method, _data, _data_len, ret_buf, _length) | |
2384 | if ret < 0: | |
2385 | completion._cleanup() | |
2386 | raise make_ex(ret, "error executing %s::%s on %s" % (cls, method, object_name)) | |
2387 | return completion | |
2388 | ||
2389 | @requires(('object_name', str_type), ('oncomplete', opt(Callable)), ('onsafe', opt(Callable))) | |
2390 | def aio_remove(self, object_name, oncomplete=None, onsafe=None): | |
2391 | """ | |
2392 | Asychronously remove an object | |
2393 | ||
2394 | :param object_name: name of the object to remove | |
2395 | :type object_name: str | |
2396 | :param oncomplete: what to do when the remove is safe and complete in memory | |
2397 | on all replicas | |
2398 | :type oncomplete: completion | |
2399 | :param onsafe: what to do when the remove is safe and complete on storage | |
2400 | on all replicas | |
2401 | :type onsafe: completion | |
2402 | ||
2403 | :raises: :class:`Error` | |
2404 | :returns: completion object | |
2405 | """ | |
2406 | object_name = cstr(object_name, 'object_name') | |
2407 | ||
2408 | cdef: | |
2409 | Completion completion | |
2410 | char* _object_name = object_name | |
2411 | ||
2412 | completion = self.__get_completion(oncomplete, onsafe) | |
2413 | self.__track_completion(completion) | |
2414 | with nogil: | |
2415 | ret = rados_aio_remove(self.io, _object_name, | |
2416 | completion.rados_comp) | |
2417 | if ret < 0: | |
2418 | completion._cleanup() | |
2419 | raise make_ex(ret, "error removing %s" % object_name) | |
2420 | return completion | |
2421 | ||
2422 | def require_ioctx_open(self): | |
2423 | """ | |
2424 | Checks if the rados.Ioctx object state is 'open' | |
2425 | ||
2426 | :raises: IoctxStateError | |
2427 | """ | |
2428 | if self.state != "open": | |
2429 | raise IoctxStateError("The pool is %s" % self.state) | |
2430 | ||
2431 | def change_auid(self, auid): | |
2432 | """ | |
2433 | Attempt to change an io context's associated auid "owner." | |
2434 | ||
2435 | Requires that you have write permission on both the current and new | |
2436 | auid. | |
2437 | ||
2438 | :raises: :class:`Error` | |
2439 | """ | |
2440 | self.require_ioctx_open() | |
2441 | ||
2442 | cdef: | |
2443 | uint64_t _auid = auid | |
2444 | ||
2445 | with nogil: | |
2446 | ret = rados_ioctx_pool_set_auid(self.io, _auid) | |
2447 | if ret < 0: | |
2448 | raise make_ex(ret, "error changing auid of '%s' to %d" | |
2449 | % (self.name, auid)) | |
2450 | ||
2451 | @requires(('loc_key', str_type)) | |
2452 | def set_locator_key(self, loc_key): | |
2453 | """ | |
2454 | Set the key for mapping objects to pgs within an io context. | |
2455 | ||
2456 | The key is used instead of the object name to determine which | |
2457 | placement groups an object is put in. This affects all subsequent | |
2458 | operations of the io context - until a different locator key is | |
2459 | set, all objects in this io context will be placed in the same pg. | |
2460 | ||
2461 | :param loc_key: the key to use as the object locator, or NULL to discard | |
2462 | any previously set key | |
2463 | :type loc_key: str | |
2464 | ||
2465 | :raises: :class:`TypeError` | |
2466 | """ | |
2467 | self.require_ioctx_open() | |
2468 | cloc_key = cstr(loc_key, 'loc_key') | |
2469 | cdef char *_loc_key = cloc_key | |
2470 | with nogil: | |
2471 | rados_ioctx_locator_set_key(self.io, _loc_key) | |
2472 | self.locator_key = loc_key | |
2473 | ||
2474 | def get_locator_key(self): | |
2475 | """ | |
2476 | Get the locator_key of context | |
2477 | ||
2478 | :returns: locator_key | |
2479 | """ | |
2480 | return self.locator_key | |
2481 | ||
2482 | @requires(('snap_id', long)) | |
2483 | def set_read(self, snap_id): | |
2484 | """ | |
2485 | Set the snapshot for reading objects. | |
2486 | ||
2487 | To stop to read from snapshot, use set_read(LIBRADOS_SNAP_HEAD) | |
2488 | ||
2489 | :param snap_id: the snapshot Id | |
2490 | :type snap_id: int | |
2491 | ||
2492 | :raises: :class:`TypeError` | |
2493 | """ | |
2494 | self.require_ioctx_open() | |
2495 | cdef rados_snap_t _snap_id = snap_id | |
2496 | with nogil: | |
2497 | rados_ioctx_snap_set_read(self.io, _snap_id) | |
2498 | ||
2499 | @requires(('nspace', str_type)) | |
2500 | def set_namespace(self, nspace): | |
2501 | """ | |
2502 | Set the namespace for objects within an io context. | |
2503 | ||
2504 | The namespace in addition to the object name fully identifies | |
2505 | an object. This affects all subsequent operations of the io context | |
2506 | - until a different namespace is set, all objects in this io context | |
2507 | will be placed in the same namespace. | |
2508 | ||
2509 | :param nspace: the namespace to use, or None/"" for the default namespace | |
2510 | :type nspace: str | |
2511 | ||
2512 | :raises: :class:`TypeError` | |
2513 | """ | |
2514 | self.require_ioctx_open() | |
2515 | if nspace is None: | |
2516 | nspace = "" | |
2517 | cnspace = cstr(nspace, 'nspace') | |
2518 | cdef char *_nspace = cnspace | |
2519 | with nogil: | |
2520 | rados_ioctx_set_namespace(self.io, _nspace) | |
2521 | self.nspace = nspace | |
2522 | ||
2523 | def get_namespace(self): | |
2524 | """ | |
2525 | Get the namespace of context | |
2526 | ||
2527 | :returns: namespace | |
2528 | """ | |
2529 | return self.nspace | |
2530 | ||
2531 | def close(self): | |
2532 | """ | |
2533 | Close a rados.Ioctx object. | |
2534 | ||
2535 | This just tells librados that you no longer need to use the io context. | |
2536 | It may not be freed immediately if there are pending asynchronous | |
2537 | requests on it, but you should not use an io context again after | |
2538 | calling this function on it. | |
2539 | """ | |
2540 | if self.state == "open": | |
2541 | self.require_ioctx_open() | |
2542 | with nogil: | |
2543 | rados_ioctx_destroy(self.io) | |
2544 | self.state = "closed" | |
2545 | ||
2546 | ||
2547 | @requires(('key', str_type), ('data', bytes)) | |
2548 | def write(self, key, data, offset=0): | |
2549 | """ | |
2550 | Write data to an object synchronously | |
2551 | ||
2552 | :param key: name of the object | |
2553 | :type key: str | |
2554 | :param data: data to write | |
2555 | :type data: bytes | |
2556 | :param offset: byte offset in the object to begin writing at | |
2557 | :type offset: int | |
2558 | ||
2559 | :raises: :class:`TypeError` | |
2560 | :raises: :class:`LogicError` | |
2561 | :returns: int - 0 on success | |
2562 | """ | |
2563 | self.require_ioctx_open() | |
2564 | ||
2565 | key = cstr(key, 'key') | |
2566 | cdef: | |
2567 | char *_key = key | |
2568 | char *_data = data | |
2569 | size_t length = len(data) | |
2570 | uint64_t _offset = offset | |
2571 | ||
2572 | with nogil: | |
2573 | ret = rados_write(self.io, _key, _data, length, _offset) | |
2574 | if ret == 0: | |
2575 | return ret | |
2576 | elif ret < 0: | |
2577 | raise make_ex(ret, "Ioctx.write(%s): failed to write %s" | |
2578 | % (self.name, key)) | |
2579 | else: | |
2580 | raise LogicError("Ioctx.write(%s): rados_write \ | |
2581 | returned %d, but should return zero on success." % (self.name, ret)) | |
2582 | ||
2583 | @requires(('key', str_type), ('data', bytes)) | |
2584 | def write_full(self, key, data): | |
2585 | """ | |
2586 | Write an entire object synchronously. | |
2587 | ||
2588 | The object is filled with the provided data. If the object exists, | |
2589 | it is atomically truncated and then written. | |
2590 | ||
2591 | :param key: name of the object | |
2592 | :type key: str | |
2593 | :param data: data to write | |
2594 | :type data: bytes | |
2595 | ||
2596 | :raises: :class:`TypeError` | |
2597 | :raises: :class:`Error` | |
2598 | :returns: int - 0 on success | |
2599 | """ | |
2600 | self.require_ioctx_open() | |
2601 | key = cstr(key, 'key') | |
2602 | cdef: | |
2603 | char *_key = key | |
2604 | char *_data = data | |
2605 | size_t length = len(data) | |
2606 | ||
2607 | with nogil: | |
2608 | ret = rados_write_full(self.io, _key, _data, length) | |
2609 | if ret == 0: | |
2610 | return ret | |
2611 | elif ret < 0: | |
2612 | raise make_ex(ret, "Ioctx.write_full(%s): failed to write %s" | |
2613 | % (self.name, key)) | |
2614 | else: | |
2615 | raise LogicError("Ioctx.write_full(%s): rados_write_full \ | |
2616 | returned %d, but should return zero on success." % (self.name, ret)) | |
2617 | ||
2618 | @requires(('key', str_type), ('data', bytes)) | |
2619 | def append(self, key, data): | |
2620 | """ | |
2621 | Append data to an object synchronously | |
2622 | ||
2623 | :param key: name of the object | |
2624 | :type key: str | |
2625 | :param data: data to write | |
2626 | :type data: bytes | |
2627 | ||
2628 | :raises: :class:`TypeError` | |
2629 | :raises: :class:`LogicError` | |
2630 | :returns: int - 0 on success | |
2631 | """ | |
2632 | self.require_ioctx_open() | |
2633 | key = cstr(key, 'key') | |
2634 | cdef: | |
2635 | char *_key = key | |
2636 | char *_data = data | |
2637 | size_t length = len(data) | |
2638 | ||
2639 | with nogil: | |
2640 | ret = rados_append(self.io, _key, _data, length) | |
2641 | if ret == 0: | |
2642 | return ret | |
2643 | elif ret < 0: | |
2644 | raise make_ex(ret, "Ioctx.append(%s): failed to append %s" | |
2645 | % (self.name, key)) | |
2646 | else: | |
2647 | raise LogicError("Ioctx.append(%s): rados_append \ | |
2648 | returned %d, but should return zero on success." % (self.name, ret)) | |
2649 | ||
2650 | @requires(('key', str_type)) | |
2651 | def read(self, key, length=8192, offset=0): | |
2652 | """ | |
2653 | Read data from an object synchronously | |
2654 | ||
2655 | :param key: name of the object | |
2656 | :type key: str | |
2657 | :param length: the number of bytes to read (default=8192) | |
2658 | :type length: int | |
2659 | :param offset: byte offset in the object to begin reading at | |
2660 | :type offset: int | |
2661 | ||
2662 | :raises: :class:`TypeError` | |
2663 | :raises: :class:`Error` | |
2664 | :returns: str - data read from object | |
2665 | """ | |
2666 | self.require_ioctx_open() | |
2667 | key = cstr(key, 'key') | |
2668 | cdef: | |
2669 | char *_key = key | |
2670 | char *ret_buf | |
2671 | uint64_t _offset = offset | |
2672 | size_t _length = length | |
2673 | PyObject* ret_s = NULL | |
2674 | ||
2675 | ret_s = PyBytes_FromStringAndSize(NULL, length) | |
2676 | try: | |
2677 | ret_buf = PyBytes_AsString(ret_s) | |
2678 | with nogil: | |
2679 | ret = rados_read(self.io, _key, ret_buf, _length, _offset) | |
2680 | if ret < 0: | |
2681 | raise make_ex(ret, "Ioctx.read(%s): failed to read %s" % (self.name, key)) | |
2682 | ||
2683 | if ret != length: | |
2684 | _PyBytes_Resize(&ret_s, ret) | |
2685 | ||
2686 | return <object>ret_s | |
2687 | finally: | |
2688 | # We DECREF unconditionally: the cast to object above will have | |
2689 | # INCREFed if necessary. This also takes care of exceptions, | |
2690 | # including if _PyString_Resize fails (that will free the string | |
2691 | # itself and set ret_s to NULL, hence XDECREF). | |
2692 | ref.Py_XDECREF(ret_s) | |
2693 | ||
2694 | @requires(('key', str_type), ('cls', str_type), ('method', str_type), ('data', bytes)) | |
2695 | def execute(self, key, cls, method, data, length=8192): | |
2696 | """ | |
2697 | Execute an OSD class method on an object. | |
2698 | ||
2699 | :param key: name of the object | |
2700 | :type key: str | |
2701 | :param cls: name of the object class | |
2702 | :type cls: str | |
2703 | :param method: name of the method | |
2704 | :type method: str | |
2705 | :param data: input data | |
2706 | :type data: bytes | |
2707 | :param length: size of output buffer in bytes (default=8192) | |
2708 | :type length: int | |
2709 | ||
2710 | :raises: :class:`TypeError` | |
2711 | :raises: :class:`Error` | |
2712 | :returns: (ret, method output) | |
2713 | """ | |
2714 | self.require_ioctx_open() | |
2715 | ||
2716 | key = cstr(key, 'key') | |
2717 | cls = cstr(cls, 'cls') | |
2718 | method = cstr(method, 'method') | |
2719 | cdef: | |
2720 | char *_key = key | |
2721 | char *_cls = cls | |
2722 | char *_method = method | |
2723 | char *_data = data | |
2724 | size_t _data_len = len(data) | |
2725 | ||
2726 | char *ref_buf | |
2727 | size_t _length = length | |
2728 | PyObject* ret_s = NULL | |
2729 | ||
2730 | ret_s = PyBytes_FromStringAndSize(NULL, length) | |
2731 | try: | |
2732 | ret_buf = PyBytes_AsString(ret_s) | |
2733 | with nogil: | |
2734 | ret = rados_exec(self.io, _key, _cls, _method, _data, | |
2735 | _data_len, ret_buf, _length) | |
2736 | if ret < 0: | |
2737 | raise make_ex(ret, "Ioctx.read(%s): failed to read %s" % (self.name, key)) | |
2738 | ||
2739 | if ret != length: | |
2740 | _PyBytes_Resize(&ret_s, ret) | |
2741 | ||
2742 | return ret, <object>ret_s | |
2743 | finally: | |
2744 | # We DECREF unconditionally: the cast to object above will have | |
2745 | # INCREFed if necessary. This also takes care of exceptions, | |
2746 | # including if _PyString_Resize fails (that will free the string | |
2747 | # itself and set ret_s to NULL, hence XDECREF). | |
2748 | ref.Py_XDECREF(ret_s) | |
2749 | ||
2750 | def get_stats(self): | |
2751 | """ | |
2752 | Get pool usage statistics | |
2753 | ||
2754 | :returns: dict - contains the following keys: | |
2755 | ||
2756 | - ``num_bytes`` (int) - size of pool in bytes | |
2757 | ||
2758 | - ``num_kb`` (int) - size of pool in kbytes | |
2759 | ||
2760 | - ``num_objects`` (int) - number of objects in the pool | |
2761 | ||
2762 | - ``num_object_clones`` (int) - number of object clones | |
2763 | ||
2764 | - ``num_object_copies`` (int) - number of object copies | |
2765 | ||
2766 | - ``num_objects_missing_on_primary`` (int) - number of objets | |
2767 | missing on primary | |
2768 | ||
2769 | - ``num_objects_unfound`` (int) - number of unfound objects | |
2770 | ||
2771 | - ``num_objects_degraded`` (int) - number of degraded objects | |
2772 | ||
2773 | - ``num_rd`` (int) - bytes read | |
2774 | ||
2775 | - ``num_rd_kb`` (int) - kbytes read | |
2776 | ||
2777 | - ``num_wr`` (int) - bytes written | |
2778 | ||
2779 | - ``num_wr_kb`` (int) - kbytes written | |
2780 | """ | |
2781 | self.require_ioctx_open() | |
2782 | cdef rados_pool_stat_t stats | |
2783 | with nogil: | |
2784 | ret = rados_ioctx_pool_stat(self.io, &stats) | |
2785 | if ret < 0: | |
2786 | raise make_ex(ret, "Ioctx.get_stats(%s): get_stats failed" % self.name) | |
2787 | return {'num_bytes': stats.num_bytes, | |
2788 | 'num_kb': stats.num_kb, | |
2789 | 'num_objects': stats.num_objects, | |
2790 | 'num_object_clones': stats.num_object_clones, | |
2791 | 'num_object_copies': stats.num_object_copies, | |
2792 | "num_objects_missing_on_primary": stats.num_objects_missing_on_primary, | |
2793 | "num_objects_unfound": stats.num_objects_unfound, | |
2794 | "num_objects_degraded": stats.num_objects_degraded, | |
2795 | "num_rd": stats.num_rd, | |
2796 | "num_rd_kb": stats.num_rd_kb, | |
2797 | "num_wr": stats.num_wr, | |
2798 | "num_wr_kb": stats.num_wr_kb} | |
2799 | ||
2800 | @requires(('key', str_type)) | |
2801 | def remove_object(self, key): | |
2802 | """ | |
2803 | Delete an object | |
2804 | ||
2805 | This does not delete any snapshots of the object. | |
2806 | ||
2807 | :param key: the name of the object to delete | |
2808 | :type key: str | |
2809 | ||
2810 | :raises: :class:`TypeError` | |
2811 | :raises: :class:`Error` | |
2812 | :returns: bool - True on success | |
2813 | """ | |
2814 | self.require_ioctx_open() | |
2815 | key = cstr(key, 'key') | |
2816 | cdef: | |
2817 | char *_key = key | |
2818 | ||
2819 | with nogil: | |
2820 | ret = rados_remove(self.io, _key) | |
2821 | if ret < 0: | |
2822 | raise make_ex(ret, "Failed to remove '%s'" % key) | |
2823 | return True | |
2824 | ||
2825 | @requires(('key', str_type)) | |
2826 | def trunc(self, key, size): | |
2827 | """ | |
2828 | Resize an object | |
2829 | ||
2830 | If this enlarges the object, the new area is logically filled with | |
2831 | zeroes. If this shrinks the object, the excess data is removed. | |
2832 | ||
2833 | :param key: the name of the object to resize | |
2834 | :type key: str | |
2835 | :param size: the new size of the object in bytes | |
2836 | :type size: int | |
2837 | ||
2838 | :raises: :class:`TypeError` | |
2839 | :raises: :class:`Error` | |
2840 | :returns: int - 0 on success, otherwise raises error | |
2841 | """ | |
2842 | ||
2843 | self.require_ioctx_open() | |
2844 | key = cstr(key, 'key') | |
2845 | cdef: | |
2846 | char *_key = key | |
2847 | uint64_t _size = size | |
2848 | ||
2849 | with nogil: | |
2850 | ret = rados_trunc(self.io, _key, _size) | |
2851 | if ret < 0: | |
2852 | raise make_ex(ret, "Ioctx.trunc(%s): failed to truncate %s" % (self.name, key)) | |
2853 | return ret | |
2854 | ||
2855 | @requires(('key', str_type)) | |
2856 | def stat(self, key): | |
2857 | """ | |
2858 | Get object stats (size/mtime) | |
2859 | ||
2860 | :param key: the name of the object to get stats from | |
2861 | :type key: str | |
2862 | ||
2863 | :raises: :class:`TypeError` | |
2864 | :raises: :class:`Error` | |
2865 | :returns: (size,timestamp) | |
2866 | """ | |
2867 | self.require_ioctx_open() | |
2868 | ||
2869 | key = cstr(key, 'key') | |
2870 | cdef: | |
2871 | char *_key = key | |
2872 | uint64_t psize | |
2873 | time_t pmtime | |
2874 | ||
2875 | with nogil: | |
2876 | ret = rados_stat(self.io, _key, &psize, &pmtime) | |
2877 | if ret < 0: | |
2878 | raise make_ex(ret, "Failed to stat %r" % key) | |
2879 | return psize, time.localtime(pmtime) | |
2880 | ||
2881 | @requires(('key', str_type), ('xattr_name', str_type)) | |
2882 | def get_xattr(self, key, xattr_name): | |
2883 | """ | |
2884 | Get the value of an extended attribute on an object. | |
2885 | ||
2886 | :param key: the name of the object to get xattr from | |
2887 | :type key: str | |
2888 | :param xattr_name: which extended attribute to read | |
2889 | :type xattr_name: str | |
2890 | ||
2891 | :raises: :class:`TypeError` | |
2892 | :raises: :class:`Error` | |
2893 | :returns: str - value of the xattr | |
2894 | """ | |
2895 | self.require_ioctx_open() | |
2896 | ||
2897 | key = cstr(key, 'key') | |
2898 | xattr_name = cstr(xattr_name, 'xattr_name') | |
2899 | cdef: | |
2900 | char *_key = key | |
2901 | char *_xattr_name = xattr_name | |
2902 | size_t ret_length = 4096 | |
2903 | char *ret_buf = NULL | |
2904 | ||
2905 | try: | |
2906 | while ret_length < 4096 * 1024 * 1024: | |
2907 | ret_buf = <char *>realloc_chk(ret_buf, ret_length) | |
2908 | with nogil: | |
2909 | ret = rados_getxattr(self.io, _key, _xattr_name, ret_buf, ret_length) | |
2910 | if ret == -errno.ERANGE: | |
2911 | ret_length *= 2 | |
2912 | elif ret < 0: | |
2913 | raise make_ex(ret, "Failed to get xattr %r" % xattr_name) | |
2914 | else: | |
2915 | break | |
2916 | return ret_buf[:ret] | |
2917 | finally: | |
2918 | free(ret_buf) | |
2919 | ||
2920 | @requires(('oid', str_type)) | |
2921 | def get_xattrs(self, oid): | |
2922 | """ | |
2923 | Start iterating over xattrs on an object. | |
2924 | ||
2925 | :param oid: the name of the object to get xattrs from | |
2926 | :type oid: str | |
2927 | ||
2928 | :raises: :class:`TypeError` | |
2929 | :raises: :class:`Error` | |
2930 | :returns: XattrIterator | |
2931 | """ | |
2932 | self.require_ioctx_open() | |
2933 | return XattrIterator(self, oid) | |
2934 | ||
2935 | @requires(('key', str_type), ('xattr_name', str_type), ('xattr_value', bytes)) | |
2936 | def set_xattr(self, key, xattr_name, xattr_value): | |
2937 | """ | |
2938 | Set an extended attribute on an object. | |
2939 | ||
2940 | :param key: the name of the object to set xattr to | |
2941 | :type key: str | |
2942 | :param xattr_name: which extended attribute to set | |
2943 | :type xattr_name: str | |
2944 | :param xattr_value: the value of the extended attribute | |
2945 | :type xattr_value: bytes | |
2946 | ||
2947 | :raises: :class:`TypeError` | |
2948 | :raises: :class:`Error` | |
2949 | :returns: bool - True on success, otherwise raise an error | |
2950 | """ | |
2951 | self.require_ioctx_open() | |
2952 | ||
2953 | key = cstr(key, 'key') | |
2954 | xattr_name = cstr(xattr_name, 'xattr_name') | |
2955 | cdef: | |
2956 | char *_key = key | |
2957 | char *_xattr_name = xattr_name | |
2958 | char *_xattr_value = xattr_value | |
2959 | size_t _xattr_value_len = len(xattr_value) | |
2960 | ||
2961 | with nogil: | |
2962 | ret = rados_setxattr(self.io, _key, _xattr_name, | |
2963 | _xattr_value, _xattr_value_len) | |
2964 | if ret < 0: | |
2965 | raise make_ex(ret, "Failed to set xattr %r" % xattr_name) | |
2966 | return True | |
2967 | ||
2968 | @requires(('key', str_type), ('xattr_name', str_type)) | |
2969 | def rm_xattr(self, key, xattr_name): | |
2970 | """ | |
2971 | Removes an extended attribute on from an object. | |
2972 | ||
2973 | :param key: the name of the object to remove xattr from | |
2974 | :type key: str | |
2975 | :param xattr_name: which extended attribute to remove | |
2976 | :type xattr_name: str | |
2977 | ||
2978 | :raises: :class:`TypeError` | |
2979 | :raises: :class:`Error` | |
2980 | :returns: bool - True on success, otherwise raise an error | |
2981 | """ | |
2982 | self.require_ioctx_open() | |
2983 | ||
2984 | key = cstr(key, 'key') | |
2985 | xattr_name = cstr(xattr_name, 'xattr_name') | |
2986 | cdef: | |
2987 | char *_key = key | |
2988 | char *_xattr_name = xattr_name | |
2989 | ||
2990 | with nogil: | |
2991 | ret = rados_rmxattr(self.io, _key, _xattr_name) | |
2992 | if ret < 0: | |
2993 | raise make_ex(ret, "Failed to delete key %r xattr %r" % | |
2994 | (key, xattr_name)) | |
2995 | return True | |
2996 | ||
2997 | def list_objects(self): | |
2998 | """ | |
2999 | Get ObjectIterator on rados.Ioctx object. | |
3000 | ||
3001 | :returns: ObjectIterator | |
3002 | """ | |
3003 | self.require_ioctx_open() | |
3004 | return ObjectIterator(self) | |
3005 | ||
3006 | def list_snaps(self): | |
3007 | """ | |
3008 | Get SnapIterator on rados.Ioctx object. | |
3009 | ||
3010 | :returns: SnapIterator | |
3011 | """ | |
3012 | self.require_ioctx_open() | |
3013 | return SnapIterator(self) | |
3014 | ||
3015 | @requires(('snap_name', str_type)) | |
3016 | def create_snap(self, snap_name): | |
3017 | """ | |
3018 | Create a pool-wide snapshot | |
3019 | ||
3020 | :param snap_name: the name of the snapshot | |
3021 | :type snap_name: str | |
3022 | ||
3023 | :raises: :class:`TypeError` | |
3024 | :raises: :class:`Error` | |
3025 | """ | |
3026 | self.require_ioctx_open() | |
3027 | snap_name = cstr(snap_name, 'snap_name') | |
3028 | cdef char *_snap_name = snap_name | |
3029 | ||
3030 | with nogil: | |
3031 | ret = rados_ioctx_snap_create(self.io, _snap_name) | |
3032 | if ret != 0: | |
3033 | raise make_ex(ret, "Failed to create snap %s" % snap_name) | |
3034 | ||
3035 | @requires(('snap_name', str_type)) | |
3036 | def remove_snap(self, snap_name): | |
3037 | """ | |
3038 | Removes a pool-wide snapshot | |
3039 | ||
3040 | :param snap_name: the name of the snapshot | |
3041 | :type snap_name: str | |
3042 | ||
3043 | :raises: :class:`TypeError` | |
3044 | :raises: :class:`Error` | |
3045 | """ | |
3046 | self.require_ioctx_open() | |
3047 | snap_name = cstr(snap_name, 'snap_name') | |
3048 | cdef char *_snap_name = snap_name | |
3049 | ||
3050 | with nogil: | |
3051 | ret = rados_ioctx_snap_remove(self.io, _snap_name) | |
3052 | if ret != 0: | |
3053 | raise make_ex(ret, "Failed to remove snap %s" % snap_name) | |
3054 | ||
3055 | @requires(('snap_name', str_type)) | |
3056 | def lookup_snap(self, snap_name): | |
3057 | """ | |
3058 | Get the id of a pool snapshot | |
3059 | ||
3060 | :param snap_name: the name of the snapshot to lookop | |
3061 | :type snap_name: str | |
3062 | ||
3063 | :raises: :class:`TypeError` | |
3064 | :raises: :class:`Error` | |
3065 | :returns: Snap - on success | |
3066 | """ | |
3067 | self.require_ioctx_open() | |
3068 | csnap_name = cstr(snap_name, 'snap_name') | |
3069 | cdef: | |
3070 | char *_snap_name = csnap_name | |
3071 | rados_snap_t snap_id | |
3072 | ||
3073 | with nogil: | |
3074 | ret = rados_ioctx_snap_lookup(self.io, _snap_name, &snap_id) | |
3075 | if ret != 0: | |
3076 | raise make_ex(ret, "Failed to lookup snap %s" % snap_name) | |
3077 | return Snap(self, snap_name, int(snap_id)) | |
3078 | ||
3079 | @requires(('oid', str_type), ('snap_name', str_type)) | |
3080 | def snap_rollback(self, oid, snap_name): | |
3081 | """ | |
3082 | Rollback an object to a snapshot | |
3083 | ||
3084 | :param oid: the name of the object | |
3085 | :type oid: str | |
3086 | :param snap_name: the name of the snapshot | |
3087 | :type snap_name: str | |
3088 | ||
3089 | :raises: :class:`TypeError` | |
3090 | :raises: :class:`Error` | |
3091 | """ | |
3092 | self.require_ioctx_open() | |
3093 | oid = cstr(oid, 'oid') | |
3094 | snap_name = cstr(snap_name, 'snap_name') | |
3095 | cdef: | |
3096 | char *_snap_name = snap_name | |
3097 | char *_oid = oid | |
3098 | ||
3099 | with nogil: | |
3100 | ret = rados_ioctx_snap_rollback(self.io, _oid, _snap_name) | |
3101 | if ret != 0: | |
3102 | raise make_ex(ret, "Failed to rollback %s" % oid) | |
3103 | ||
3104 | def get_last_version(self): | |
3105 | """ | |
3106 | Return the version of the last object read or written to. | |
3107 | ||
3108 | This exposes the internal version number of the last object read or | |
3109 | written via this io context | |
3110 | ||
3111 | :returns: version of the last object used | |
3112 | """ | |
3113 | self.require_ioctx_open() | |
3114 | with nogil: | |
3115 | ret = rados_get_last_version(self.io) | |
3116 | return int(ret) | |
3117 | ||
3118 | def create_write_op(self): | |
3119 | """ | |
3120 | create write operation object. | |
3121 | need call release_write_op after use | |
3122 | """ | |
3123 | return WriteOp().create() | |
3124 | ||
3125 | def create_read_op(self): | |
3126 | """ | |
3127 | create read operation object. | |
3128 | need call release_read_op after use | |
3129 | """ | |
3130 | return ReadOp().create() | |
3131 | ||
3132 | def release_write_op(self, write_op): | |
3133 | """ | |
3134 | release memory alloc by create_write_op | |
3135 | """ | |
3136 | write_op.release() | |
3137 | ||
3138 | def release_read_op(self, read_op): | |
3139 | """ | |
3140 | release memory alloc by create_read_op | |
3141 | :para read_op: read_op object | |
3142 | :type: int | |
3143 | """ | |
3144 | read_op.release() | |
3145 | ||
3146 | @requires(('write_op', WriteOp), ('keys', tuple), ('values', tuple)) | |
3147 | def set_omap(self, write_op, keys, values): | |
3148 | """ | |
3149 | set keys values to write_op | |
3150 | :para write_op: write_operation object | |
3151 | :type write_op: WriteOp | |
3152 | :para keys: a tuple of keys | |
3153 | :type keys: tuple | |
3154 | :para values: a tuple of values | |
3155 | :type values: tuple | |
3156 | """ | |
3157 | ||
3158 | if len(keys) != len(values): | |
3159 | raise Error("Rados(): keys and values must have the same number of items") | |
3160 | ||
3161 | keys = cstr_list(keys, 'keys') | |
3162 | cdef: | |
3163 | WriteOp _write_op = write_op | |
3164 | size_t key_num = len(keys) | |
3165 | char **_keys = to_bytes_array(keys) | |
3166 | char **_values = to_bytes_array(values) | |
3167 | size_t *_lens = to_csize_t_array([len(v) for v in values]) | |
3168 | ||
3169 | try: | |
3170 | with nogil: | |
3171 | rados_write_op_omap_set(_write_op.write_op, | |
3172 | <const char**>_keys, | |
3173 | <const char**>_values, | |
3174 | <const size_t*>_lens, key_num) | |
3175 | finally: | |
3176 | free(_keys) | |
3177 | free(_values) | |
3178 | free(_lens) | |
3179 | ||
3180 | @requires(('write_op', WriteOp), ('oid', str_type), ('mtime', opt(int)), ('flags', opt(int))) | |
3181 | def operate_write_op(self, write_op, oid, mtime=0, flags=LIBRADOS_OPERATION_NOFLAG): | |
3182 | """ | |
3183 | excute the real write operation | |
3184 | :para write_op: write operation object | |
3185 | :type write_op: WriteOp | |
3186 | :para oid: object name | |
3187 | :type oid: str | |
3188 | :para mtime: the time to set the mtime to, 0 for the current time | |
3189 | :type mtime: int | |
3190 | :para flags: flags to apply to the entire operation | |
3191 | :type flags: int | |
3192 | """ | |
3193 | ||
3194 | oid = cstr(oid, 'oid') | |
3195 | cdef: | |
3196 | WriteOp _write_op = write_op | |
3197 | char *_oid = oid | |
3198 | time_t _mtime = mtime | |
3199 | int _flags = flags | |
3200 | ||
3201 | with nogil: | |
3202 | ret = rados_write_op_operate(_write_op.write_op, self.io, _oid, &_mtime, _flags) | |
3203 | if ret != 0: | |
3204 | raise make_ex(ret, "Failed to operate write op for oid %s" % oid) | |
3205 | ||
3206 | @requires(('write_op', WriteOp), ('oid', str_type), ('oncomplete', opt(Callable)), ('onsafe', opt(Callable)), ('mtime', opt(int)), ('flags', opt(int))) | |
3207 | def operate_aio_write_op(self, write_op, oid, oncomplete=None, onsafe=None, mtime=0, flags=LIBRADOS_OPERATION_NOFLAG): | |
3208 | """ | |
3209 | excute the real write operation asynchronously | |
3210 | :para write_op: write operation object | |
3211 | :type write_op: WriteOp | |
3212 | :para oid: object name | |
3213 | :type oid: str | |
3214 | :param oncomplete: what to do when the remove is safe and complete in memory | |
3215 | on all replicas | |
3216 | :type oncomplete: completion | |
3217 | :param onsafe: what to do when the remove is safe and complete on storage | |
3218 | on all replicas | |
3219 | :type onsafe: completion | |
3220 | :para mtime: the time to set the mtime to, 0 for the current time | |
3221 | :type mtime: int | |
3222 | :para flags: flags to apply to the entire operation | |
3223 | :type flags: int | |
3224 | ||
3225 | :raises: :class:`Error` | |
3226 | :returns: completion object | |
3227 | """ | |
3228 | ||
3229 | oid = cstr(oid, 'oid') | |
3230 | cdef: | |
3231 | WriteOp _write_op = write_op | |
3232 | char *_oid = oid | |
3233 | Completion completion | |
3234 | time_t _mtime = mtime | |
3235 | int _flags = flags | |
3236 | ||
3237 | completion = self.__get_completion(oncomplete, onsafe) | |
3238 | self.__track_completion(completion) | |
3239 | ||
3240 | with nogil: | |
3241 | ret = rados_aio_write_op_operate(_write_op.write_op, self.io, completion.rados_comp, _oid, | |
3242 | &_mtime, _flags) | |
3243 | if ret != 0: | |
3244 | completion._cleanup() | |
3245 | raise make_ex(ret, "Failed to operate aio write op for oid %s" % oid) | |
3246 | return completion | |
3247 | ||
3248 | @requires(('read_op', ReadOp), ('oid', str_type), ('flag', opt(int))) | |
3249 | def operate_read_op(self, read_op, oid, flag=LIBRADOS_OPERATION_NOFLAG): | |
3250 | """ | |
3251 | excute the real read operation | |
3252 | :para read_op: read operation object | |
3253 | :type read_op: ReadOp | |
3254 | :para oid: object name | |
3255 | :type oid: str | |
3256 | :para flag: flags to apply to the entire operation | |
3257 | :type flag: int | |
3258 | """ | |
3259 | oid = cstr(oid, 'oid') | |
3260 | cdef: | |
3261 | ReadOp _read_op = read_op | |
3262 | char *_oid = oid | |
3263 | int _flag = flag | |
3264 | ||
3265 | with nogil: | |
3266 | ret = rados_read_op_operate(_read_op.read_op, self.io, _oid, _flag) | |
3267 | if ret != 0: | |
3268 | raise make_ex(ret, "Failed to operate read op for oid %s" % oid) | |
3269 | ||
3270 | @requires(('read_op', ReadOp), ('oid', str_type), ('oncomplete', opt(Callable)), ('onsafe', opt(Callable)), ('flag', opt(int))) | |
3271 | def operate_aio_read_op(self, read_op, oid, oncomplete=None, onsafe=None, flag=LIBRADOS_OPERATION_NOFLAG): | |
3272 | """ | |
3273 | excute the real read operation | |
3274 | :para read_op: read operation object | |
3275 | :type read_op: ReadOp | |
3276 | :para oid: object name | |
3277 | :type oid: str | |
3278 | :param oncomplete: what to do when the remove is safe and complete in memory | |
3279 | on all replicas | |
3280 | :type oncomplete: completion | |
3281 | :param onsafe: what to do when the remove is safe and complete on storage | |
3282 | on all replicas | |
3283 | :type onsafe: completion | |
3284 | :para flag: flags to apply to the entire operation | |
3285 | :type flag: int | |
3286 | """ | |
3287 | oid = cstr(oid, 'oid') | |
3288 | cdef: | |
3289 | ReadOp _read_op = read_op | |
3290 | char *_oid = oid | |
3291 | Completion completion | |
3292 | int _flag = flag | |
3293 | ||
3294 | completion = self.__get_completion(oncomplete, onsafe) | |
3295 | self.__track_completion(completion) | |
3296 | ||
3297 | with nogil: | |
3298 | ret = rados_aio_read_op_operate(_read_op.read_op, self.io, completion.rados_comp, _oid, _flag) | |
3299 | if ret != 0: | |
3300 | completion._cleanup() | |
3301 | raise make_ex(ret, "Failed to operate aio read op for oid %s" % oid) | |
3302 | return completion | |
3303 | ||
3304 | @requires(('read_op', ReadOp), ('start_after', str_type), ('filter_prefix', str_type), ('max_return', int)) | |
3305 | def get_omap_vals(self, read_op, start_after, filter_prefix, max_return): | |
3306 | """ | |
3307 | get the omap values | |
3308 | :para read_op: read operation object | |
3309 | :type read_op: ReadOp | |
3310 | :para start_after: list keys starting after start_after | |
3311 | :type start_after: str | |
3312 | :para filter_prefix: list only keys beginning with filter_prefix | |
3313 | :type filter_prefix: str | |
3314 | :para max_return: list no more than max_return key/value pairs | |
3315 | :type max_return: int | |
3316 | :returns: an iterator over the requested omap values, return value from this action | |
3317 | """ | |
3318 | ||
3319 | start_after = cstr(start_after, 'start_after') if start_after else None | |
3320 | filter_prefix = cstr(filter_prefix, 'filter_prefix') if filter_prefix else None | |
3321 | cdef: | |
3322 | char *_start_after = opt_str(start_after) | |
3323 | char *_filter_prefix = opt_str(filter_prefix) | |
3324 | ReadOp _read_op = read_op | |
3325 | rados_omap_iter_t iter_addr = NULL | |
3326 | int _max_return = max_return | |
3327 | int prval = 0 | |
3328 | ||
3329 | with nogil: | |
3330 | rados_read_op_omap_get_vals(_read_op.read_op, _start_after, _filter_prefix, | |
3331 | _max_return, &iter_addr, &prval) | |
3332 | it = OmapIterator(self) | |
3333 | it.ctx = iter_addr | |
3334 | return it, int(prval) | |
3335 | ||
3336 | @requires(('read_op', ReadOp), ('start_after', str_type), ('max_return', int)) | |
3337 | def get_omap_keys(self, read_op, start_after, max_return): | |
3338 | """ | |
3339 | get the omap keys | |
3340 | :para read_op: read operation object | |
3341 | :type read_op: ReadOp | |
3342 | :para start_after: list keys starting after start_after | |
3343 | :type start_after: str | |
3344 | :para max_return: list no more than max_return key/value pairs | |
3345 | :type max_return: int | |
3346 | :returns: an iterator over the requested omap values, return value from this action | |
3347 | """ | |
3348 | start_after = cstr(start_after, 'start_after') if start_after else None | |
3349 | cdef: | |
3350 | char *_start_after = opt_str(start_after) | |
3351 | ReadOp _read_op = read_op | |
3352 | rados_omap_iter_t iter_addr = NULL | |
3353 | int _max_return = max_return | |
3354 | int prval = 0 | |
3355 | ||
3356 | with nogil: | |
3357 | rados_read_op_omap_get_keys(_read_op.read_op, _start_after, | |
3358 | _max_return, &iter_addr, &prval) | |
3359 | it = OmapIterator(self) | |
3360 | it.ctx = iter_addr | |
3361 | return it, int(prval) | |
3362 | ||
3363 | @requires(('read_op', ReadOp), ('keys', tuple)) | |
3364 | def get_omap_vals_by_keys(self, read_op, keys): | |
3365 | """ | |
3366 | get the omap values by keys | |
3367 | :para read_op: read operation object | |
3368 | :type read_op: ReadOp | |
3369 | :para keys: input key tuple | |
3370 | :type keys: tuple | |
3371 | :returns: an iterator over the requested omap values, return value from this action | |
3372 | """ | |
3373 | keys = cstr_list(keys, 'keys') | |
3374 | cdef: | |
3375 | ReadOp _read_op = read_op | |
3376 | rados_omap_iter_t iter_addr | |
3377 | char **_keys = to_bytes_array(keys) | |
3378 | size_t key_num = len(keys) | |
3379 | int prval = 0 | |
3380 | ||
3381 | try: | |
3382 | with nogil: | |
3383 | rados_read_op_omap_get_vals_by_keys(_read_op.read_op, | |
3384 | <const char**>_keys, | |
3385 | key_num, &iter_addr, &prval) | |
3386 | it = OmapIterator(self) | |
3387 | it.ctx = iter_addr | |
3388 | return it, int(prval) | |
3389 | finally: | |
3390 | free(_keys) | |
3391 | ||
3392 | @requires(('write_op', WriteOp), ('keys', tuple)) | |
3393 | def remove_omap_keys(self, write_op, keys): | |
3394 | """ | |
3395 | remove omap keys specifiled | |
3396 | :para write_op: write operation object | |
3397 | :type write_op: WriteOp | |
3398 | :para keys: input key tuple | |
3399 | :type keys: tuple | |
3400 | """ | |
3401 | ||
3402 | keys = cstr_list(keys, 'keys') | |
3403 | cdef: | |
3404 | WriteOp _write_op = write_op | |
3405 | size_t key_num = len(keys) | |
3406 | char **_keys = to_bytes_array(keys) | |
3407 | ||
3408 | try: | |
3409 | with nogil: | |
3410 | rados_write_op_omap_rm_keys(_write_op.write_op, <const char**>_keys, key_num) | |
3411 | finally: | |
3412 | free(_keys) | |
3413 | ||
3414 | @requires(('write_op', WriteOp)) | |
3415 | def clear_omap(self, write_op): | |
3416 | """ | |
3417 | Remove all key/value pairs from an object | |
3418 | :para write_op: write operation object | |
3419 | :type write_op: WriteOp | |
3420 | """ | |
3421 | ||
3422 | cdef: | |
3423 | WriteOp _write_op = write_op | |
3424 | ||
3425 | with nogil: | |
3426 | rados_write_op_omap_clear(_write_op.write_op) | |
3427 | ||
3428 | @requires(('key', str_type), ('name', str_type), ('cookie', str_type), ('desc', str_type), | |
3429 | ('duration', opt(int)), ('flags', int)) | |
3430 | def lock_exclusive(self, key, name, cookie, desc="", duration=None, flags=0): | |
3431 | ||
3432 | """ | |
3433 | Take an exclusive lock on an object | |
3434 | ||
3435 | :param key: name of the object | |
3436 | :type key: str | |
3437 | :param name: name of the lock | |
3438 | :type name: str | |
3439 | :param cookie: cookie of the lock | |
3440 | :type cookie: str | |
3441 | :param desc: description of the lock | |
3442 | :type desc: str | |
3443 | :param duration: duration of the lock in seconds | |
3444 | :type duration: int | |
3445 | :param flags: flags | |
3446 | :type flags: int | |
3447 | ||
3448 | :raises: :class:`TypeError` | |
3449 | :raises: :class:`Error` | |
3450 | """ | |
3451 | self.require_ioctx_open() | |
3452 | ||
3453 | key = cstr(key, 'key') | |
3454 | name = cstr(name, 'name') | |
3455 | cookie = cstr(cookie, 'cookie') | |
3456 | desc = cstr(desc, 'desc') | |
3457 | ||
3458 | cdef: | |
3459 | char* _key = key | |
3460 | char* _name = name | |
3461 | char* _cookie = cookie | |
3462 | char* _desc = desc | |
3463 | uint8_t _flags = flags | |
3464 | timeval _duration | |
3465 | ||
3466 | if duration is None: | |
3467 | with nogil: | |
3468 | ret = rados_lock_exclusive(self.io, _key, _name, _cookie, _desc, | |
3469 | NULL, _flags) | |
3470 | else: | |
3471 | _duration.tv_sec = duration | |
3472 | with nogil: | |
3473 | ret = rados_lock_exclusive(self.io, _key, _name, _cookie, _desc, | |
3474 | &_duration, _flags) | |
3475 | ||
3476 | if ret < 0: | |
3477 | raise make_ex(ret, "Ioctx.rados_lock_exclusive(%s): failed to set lock %s on %s" % (self.name, name, key)) | |
3478 | ||
3479 | @requires(('key', str_type), ('name', str_type), ('cookie', str_type), ('tag', str_type), | |
3480 | ('desc', str_type), ('duration', opt(int)), ('flags', int)) | |
3481 | def lock_shared(self, key, name, cookie, tag, desc="", duration=None, flags=0): | |
3482 | ||
3483 | """ | |
3484 | Take a shared lock on an object | |
3485 | ||
3486 | :param key: name of the object | |
3487 | :type key: str | |
3488 | :param name: name of the lock | |
3489 | :type name: str | |
3490 | :param cookie: cookie of the lock | |
3491 | :type cookie: str | |
3492 | :param tag: tag of the lock | |
3493 | :type tag: str | |
3494 | :param desc: description of the lock | |
3495 | :type desc: str | |
3496 | :param duration: duration of the lock in seconds | |
3497 | :type duration: int | |
3498 | :param flags: flags | |
3499 | :type flags: int | |
3500 | ||
3501 | :raises: :class:`TypeError` | |
3502 | :raises: :class:`Error` | |
3503 | """ | |
3504 | self.require_ioctx_open() | |
3505 | ||
3506 | key = cstr(key, 'key') | |
3507 | tag = cstr(tag, 'tag') | |
3508 | name = cstr(name, 'name') | |
3509 | cookie = cstr(cookie, 'cookie') | |
3510 | desc = cstr(desc, 'desc') | |
3511 | ||
3512 | cdef: | |
3513 | char* _key = key | |
3514 | char* _tag = tag | |
3515 | char* _name = name | |
3516 | char* _cookie = cookie | |
3517 | char* _desc = desc | |
3518 | uint8_t _flags = flags | |
3519 | timeval _duration | |
3520 | ||
3521 | if duration is None: | |
3522 | with nogil: | |
3523 | ret = rados_lock_shared(self.io, _key, _name, _cookie, _tag, _desc, | |
3524 | NULL, _flags) | |
3525 | else: | |
3526 | _duration.tv_sec = duration | |
3527 | with nogil: | |
3528 | ret = rados_lock_shared(self.io, _key, _name, _cookie, _tag, _desc, | |
3529 | &_duration, _flags) | |
3530 | if ret < 0: | |
3531 | raise make_ex(ret, "Ioctx.rados_lock_exclusive(%s): failed to set lock %s on %s" % (self.name, name, key)) | |
3532 | ||
3533 | @requires(('key', str_type), ('name', str_type), ('cookie', str_type)) | |
3534 | def unlock(self, key, name, cookie): | |
3535 | ||
3536 | """ | |
3537 | Release a shared or exclusive lock on an object | |
3538 | ||
3539 | :param key: name of the object | |
3540 | :type key: str | |
3541 | :param name: name of the lock | |
3542 | :type name: str | |
3543 | :param cookie: cookie of the lock | |
3544 | :type cookie: str | |
3545 | ||
3546 | :raises: :class:`TypeError` | |
3547 | :raises: :class:`Error` | |
3548 | """ | |
3549 | self.require_ioctx_open() | |
3550 | ||
3551 | key = cstr(key, 'key') | |
3552 | name = cstr(name, 'name') | |
3553 | cookie = cstr(cookie, 'cookie') | |
3554 | ||
3555 | cdef: | |
3556 | char* _key = key | |
3557 | char* _name = name | |
3558 | char* _cookie = cookie | |
3559 | ||
3560 | with nogil: | |
3561 | ret = rados_unlock(self.io, _key, _name, _cookie) | |
3562 | if ret < 0: | |
3563 | raise make_ex(ret, "Ioctx.rados_lock_exclusive(%s): failed to set lock %s on %s" % (self.name, name, key)) | |
3564 | ||
3565 | ||
3566 | def set_object_locator(func): | |
3567 | def retfunc(self, *args, **kwargs): | |
3568 | if self.locator_key is not None: | |
3569 | old_locator = self.ioctx.get_locator_key() | |
3570 | self.ioctx.set_locator_key(self.locator_key) | |
3571 | retval = func(self, *args, **kwargs) | |
3572 | self.ioctx.set_locator_key(old_locator) | |
3573 | return retval | |
3574 | else: | |
3575 | return func(self, *args, **kwargs) | |
3576 | return retfunc | |
3577 | ||
3578 | ||
3579 | def set_object_namespace(func): | |
3580 | def retfunc(self, *args, **kwargs): | |
3581 | if self.nspace is None: | |
3582 | raise LogicError("Namespace not set properly in context") | |
3583 | old_nspace = self.ioctx.get_namespace() | |
3584 | self.ioctx.set_namespace(self.nspace) | |
3585 | retval = func(self, *args, **kwargs) | |
3586 | self.ioctx.set_namespace(old_nspace) | |
3587 | return retval | |
3588 | return retfunc | |
3589 | ||
3590 | ||
3591 | class Object(object): | |
3592 | """Rados object wrapper, makes the object look like a file""" | |
3593 | def __init__(self, ioctx, key, locator_key=None, nspace=None): | |
3594 | self.key = key | |
3595 | self.ioctx = ioctx | |
3596 | self.offset = 0 | |
3597 | self.state = "exists" | |
3598 | self.locator_key = locator_key | |
3599 | self.nspace = "" if nspace is None else nspace | |
3600 | ||
3601 | def __str__(self): | |
3602 | return "rados.Object(ioctx=%s,key=%s,nspace=%s,locator=%s)" % \ | |
3603 | (str(self.ioctx), self.key, "--default--" | |
3604 | if self.nspace is "" else self.nspace, self.locator_key) | |
3605 | ||
3606 | def require_object_exists(self): | |
3607 | if self.state != "exists": | |
3608 | raise ObjectStateError("The object is %s" % self.state) | |
3609 | ||
3610 | @set_object_locator | |
3611 | @set_object_namespace | |
3612 | def read(self, length=1024 * 1024): | |
3613 | self.require_object_exists() | |
3614 | ret = self.ioctx.read(self.key, length, self.offset) | |
3615 | self.offset += len(ret) | |
3616 | return ret | |
3617 | ||
3618 | @set_object_locator | |
3619 | @set_object_namespace | |
3620 | def write(self, string_to_write): | |
3621 | self.require_object_exists() | |
3622 | ret = self.ioctx.write(self.key, string_to_write, self.offset) | |
3623 | if ret == 0: | |
3624 | self.offset += len(string_to_write) | |
3625 | return ret | |
3626 | ||
3627 | @set_object_locator | |
3628 | @set_object_namespace | |
3629 | def remove(self): | |
3630 | self.require_object_exists() | |
3631 | self.ioctx.remove_object(self.key) | |
3632 | self.state = "removed" | |
3633 | ||
3634 | @set_object_locator | |
3635 | @set_object_namespace | |
3636 | def stat(self): | |
3637 | self.require_object_exists() | |
3638 | return self.ioctx.stat(self.key) | |
3639 | ||
3640 | def seek(self, position): | |
3641 | self.require_object_exists() | |
3642 | self.offset = position | |
3643 | ||
3644 | @set_object_locator | |
3645 | @set_object_namespace | |
3646 | def get_xattr(self, xattr_name): | |
3647 | self.require_object_exists() | |
3648 | return self.ioctx.get_xattr(self.key, xattr_name) | |
3649 | ||
3650 | @set_object_locator | |
3651 | @set_object_namespace | |
3652 | def get_xattrs(self): | |
3653 | self.require_object_exists() | |
3654 | return self.ioctx.get_xattrs(self.key) | |
3655 | ||
3656 | @set_object_locator | |
3657 | @set_object_namespace | |
3658 | def set_xattr(self, xattr_name, xattr_value): | |
3659 | self.require_object_exists() | |
3660 | return self.ioctx.set_xattr(self.key, xattr_name, xattr_value) | |
3661 | ||
3662 | @set_object_locator | |
3663 | @set_object_namespace | |
3664 | def rm_xattr(self, xattr_name): | |
3665 | self.require_object_exists() | |
3666 | return self.ioctx.rm_xattr(self.key, xattr_name) | |
3667 | ||
3668 | MONITOR_LEVELS = [ | |
3669 | "debug", | |
3670 | "info", | |
3671 | "warn", "warning", | |
3672 | "err", "error", | |
3673 | "sec", | |
3674 | ] | |
3675 | ||
3676 | ||
3677 | class MonitorLog(object): | |
3678 | # NOTE(sileht): Keep this class for backward compat | |
3679 | # method moved to Rados.monitor_log() | |
3680 | """ | |
3681 | For watching cluster log messages. Instantiate an object and keep | |
3682 | it around while callback is periodically called. Construct with | |
3683 | 'level' to monitor 'level' messages (one of MONITOR_LEVELS). | |
3684 | arg will be passed to the callback. | |
3685 | ||
3686 | callback will be called with: | |
3687 | arg (given to __init__) | |
3688 | line (the full line, including timestamp, who, level, msg) | |
3689 | who (which entity issued the log message) | |
3690 | timestamp_sec (sec of a struct timespec) | |
3691 | timestamp_nsec (sec of a struct timespec) | |
3692 | seq (sequence number) | |
3693 | level (string representing the level of the log message) | |
3694 | msg (the message itself) | |
3695 | callback's return value is ignored | |
3696 | """ | |
3697 | def __init__(self, cluster, level, callback, arg): | |
3698 | self.level = level | |
3699 | self.callback = callback | |
3700 | self.arg = arg | |
3701 | self.cluster = cluster | |
3702 | self.cluster.monitor_log(level, callback, arg) | |
3703 |