]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net> | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
7c673cae FG |
15 | #include "common/ceph_argparse.h" |
16 | #include "common/common_init.h" | |
17 | #include "common/config.h" | |
7c673cae | 18 | #include "include/str_list.h" |
7c673cae | 19 | #include "include/stringify.h" |
7c673cae FG |
20 | #include "osd/osd_types.h" |
21 | #include "common/errno.h" | |
22 | #include "common/hostname.h" | |
23 | ||
7c673cae | 24 | #include <boost/type_traits.hpp> |
7c673cae FG |
25 | |
26 | /* Don't use standard Ceph logging in this file. | |
27 | * We can't use logging until it's initialized, and a lot of the necessary | |
28 | * initialization happens here. | |
29 | */ | |
30 | #undef dout | |
31 | #undef ldout | |
32 | #undef pdout | |
33 | #undef derr | |
34 | #undef lderr | |
35 | #undef generic_dout | |
36 | #undef dendl | |
37 | ||
38 | using std::map; | |
39 | using std::list; | |
7c673cae FG |
40 | using std::ostringstream; |
41 | using std::pair; | |
7c673cae FG |
42 | using std::string; |
43 | ||
44 | const char *CEPH_CONF_FILE_DEFAULT = "$data_dir/config, /etc/ceph/$cluster.conf, ~/.ceph/$cluster.conf, $cluster.conf" | |
45 | #if defined(__FreeBSD__) | |
46 | ", /usr/local/etc/ceph/$cluster.conf" | |
47 | #endif | |
48 | ; | |
49 | ||
50 | #define _STR(x) #x | |
51 | #define STRINGIFY(x) _STR(x) | |
52 | ||
53 | int ceph_resolve_file_search(const std::string& filename_list, | |
54 | std::string& result) | |
55 | { | |
56 | list<string> ls; | |
57 | get_str_list(filename_list, ls); | |
58 | ||
59 | int ret = -ENOENT; | |
60 | list<string>::iterator iter; | |
61 | for (iter = ls.begin(); iter != ls.end(); ++iter) { | |
62 | int fd = ::open(iter->c_str(), O_RDONLY); | |
63 | if (fd < 0) { | |
64 | ret = -errno; | |
65 | continue; | |
66 | } | |
67 | close(fd); | |
68 | result = *iter; | |
69 | return 0; | |
70 | } | |
71 | ||
72 | return ret; | |
73 | } | |
74 | ||
c07f9fc5 FG |
75 | |
76 | ||
77 | md_config_t::md_config_t(bool is_daemon) | |
78 | : cluster(""), | |
79 | lock("md_config_t", true, false) | |
80 | { | |
81 | init_subsys(); | |
82 | ||
83 | // Load the compile-time list of Option into | |
84 | // a map so that we can resolve keys quickly. | |
85 | for (const auto &i : ceph_options) { | |
86 | if (schema.count(i.name)) { | |
87 | // We may be instantiated pre-logging so send | |
88 | std::cerr << "Duplicate config key in schema: '" << i.name << "'" | |
89 | << std::endl; | |
90 | assert(false); | |
91 | } | |
92 | schema.insert({i.name, i}); | |
93 | } | |
94 | ||
95 | // Populate list of legacy_values according to the OPTION() definitions | |
96 | // Note that this is just setting up our map of name->member ptr. The | |
97 | // default values etc will get loaded in along with new-style data, | |
98 | // as all loads write to both the values map, and the legacy | |
99 | // members if present. | |
100 | legacy_values = { | |
101 | #define OPTION(name, type) \ | |
102 | {std::string(STRINGIFY(name)), &md_config_t::name}, | |
103 | #define SAFE_OPTION(name, type) OPTION(name, type) | |
104 | #include "common/legacy_config_opts.h" | |
7c673cae | 105 | #undef OPTION |
7c673cae | 106 | #undef SAFE_OPTION |
c07f9fc5 | 107 | }; |
7c673cae | 108 | |
c07f9fc5 | 109 | validate_schema(); |
7c673cae | 110 | |
c07f9fc5 FG |
111 | // Load default values from the schema |
112 | for (const auto &i : schema) { | |
113 | const Option &opt = i.second; | |
114 | bool has_daemon_default = !boost::get<boost::blank>(&opt.daemon_value); | |
115 | Option::value_t default_val; | |
116 | if (is_daemon && has_daemon_default) { | |
117 | default_val = opt.daemon_value; | |
118 | } else { | |
119 | default_val = opt.value; | |
120 | } | |
7c673cae | 121 | |
c07f9fc5 FG |
122 | if (opt.type == Option::TYPE_STR) { |
123 | // We call pre_validate as a sanity check, but also to get any | |
124 | // side effect (value modification) from the validator. | |
125 | std::string *def_str = boost::get<std::string>(&default_val); | |
126 | std::string err; | |
127 | if (opt.pre_validate(def_str, &err) != 0) { | |
128 | std::cerr << "Default value " << opt.name << "=" << *def_str << " is " | |
129 | "invalid: " << err << std::endl; | |
130 | ||
131 | // This is the compiled-in default that is failing its own option's | |
132 | // validation, so this is super-invalid and should never make it | |
133 | // past a pull request: crash out. | |
134 | assert(false); | |
135 | } | |
136 | } | |
7c673cae | 137 | |
c07f9fc5 FG |
138 | values[i.first] = default_val; |
139 | } | |
7c673cae | 140 | |
c07f9fc5 FG |
141 | // Copy out values (defaults) into any legacy (C struct member) fields |
142 | for (const auto &i : legacy_values) { | |
143 | const auto &name = i.first; | |
144 | const auto &option = schema.at(name); | |
145 | auto ptr = i.second; | |
7c673cae | 146 | |
c07f9fc5 FG |
147 | update_legacy_val(option, ptr); |
148 | } | |
149 | } | |
150 | ||
151 | /** | |
152 | * Sanity check schema. Assert out on failures, to ensure any bad changes | |
153 | * cannot possibly pass any testing and make it into a release. | |
154 | */ | |
155 | void md_config_t::validate_schema() | |
7c673cae | 156 | { |
c07f9fc5 FG |
157 | for (const auto &i : schema) { |
158 | const auto &opt = i.second; | |
159 | for (const auto &see_also_key : opt.see_also) { | |
160 | if (schema.count(see_also_key) == 0) { | |
161 | std::cerr << "Non-existent see-also key '" << see_also_key | |
162 | << "' on option '" << opt.name << "'" << std::endl; | |
163 | assert(false); | |
164 | } | |
165 | } | |
166 | } | |
7c673cae | 167 | |
c07f9fc5 FG |
168 | for (const auto &i : legacy_values) { |
169 | if (schema.count(i.first) == 0) { | |
170 | std::cerr << "Schema is missing legacy field '" << i.first << "'" | |
171 | << std::endl; | |
172 | assert(false); | |
173 | } | |
174 | } | |
7c673cae FG |
175 | } |
176 | ||
177 | void md_config_t::init_subsys() | |
178 | { | |
179 | #define SUBSYS(name, log, gather) \ | |
180 | subsys.add(ceph_subsys_##name, STRINGIFY(name), log, gather); | |
181 | #define DEFAULT_SUBSYS(log, gather) \ | |
182 | subsys.add(ceph_subsys_, "none", log, gather); | |
c07f9fc5 | 183 | #include "common/subsys.h" |
7c673cae FG |
184 | #undef SUBSYS |
185 | #undef DEFAULT_SUBSYS | |
186 | } | |
187 | ||
188 | md_config_t::~md_config_t() | |
189 | { | |
190 | } | |
191 | ||
192 | void md_config_t::add_observer(md_config_obs_t* observer_) | |
193 | { | |
194 | Mutex::Locker l(lock); | |
195 | const char **keys = observer_->get_tracked_conf_keys(); | |
196 | for (const char ** k = keys; *k; ++k) { | |
197 | obs_map_t::value_type val(*k, observer_); | |
198 | observers.insert(val); | |
199 | } | |
200 | } | |
201 | ||
202 | void md_config_t::remove_observer(md_config_obs_t* observer_) | |
203 | { | |
204 | Mutex::Locker l(lock); | |
205 | bool found_obs = false; | |
206 | for (obs_map_t::iterator o = observers.begin(); o != observers.end(); ) { | |
207 | if (o->second == observer_) { | |
208 | observers.erase(o++); | |
209 | found_obs = true; | |
210 | } | |
211 | else { | |
212 | ++o; | |
213 | } | |
214 | } | |
215 | assert(found_obs); | |
216 | } | |
217 | ||
218 | int md_config_t::parse_config_files(const char *conf_files, | |
219 | std::ostream *warnings, | |
220 | int flags) | |
221 | { | |
222 | Mutex::Locker l(lock); | |
223 | ||
224 | if (internal_safe_to_start_threads) | |
225 | return -ENOSYS; | |
226 | ||
227 | if (!cluster.size() && !conf_files) { | |
228 | /* | |
229 | * set the cluster name to 'ceph' when neither cluster name nor | |
230 | * configuration file are specified. | |
231 | */ | |
232 | cluster = "ceph"; | |
233 | } | |
234 | ||
235 | if (!conf_files) { | |
236 | const char *c = getenv("CEPH_CONF"); | |
237 | if (c) { | |
238 | conf_files = c; | |
239 | } | |
240 | else { | |
241 | if (flags & CINIT_FLAG_NO_DEFAULT_CONFIG_FILE) | |
242 | return 0; | |
243 | conf_files = CEPH_CONF_FILE_DEFAULT; | |
244 | } | |
245 | } | |
246 | ||
247 | std::list<std::string> cfl; | |
248 | get_str_list(conf_files, cfl); | |
249 | ||
250 | auto p = cfl.begin(); | |
251 | while (p != cfl.end()) { | |
252 | // expand $data_dir? | |
253 | string &s = *p; | |
254 | if (s.find("$data_dir") != string::npos) { | |
255 | if (data_dir_option.length()) { | |
c07f9fc5 | 256 | list<const Option *> stack; |
7c673cae FG |
257 | expand_meta(s, NULL, stack, warnings); |
258 | p++; | |
259 | } else { | |
260 | cfl.erase(p++); // ignore this item | |
261 | } | |
262 | } else { | |
263 | ++p; | |
264 | } | |
265 | } | |
266 | return parse_config_files_impl(cfl, warnings); | |
267 | } | |
268 | ||
269 | int md_config_t::parse_config_files_impl(const std::list<std::string> &conf_files, | |
270 | std::ostream *warnings) | |
271 | { | |
272 | assert(lock.is_locked()); | |
273 | ||
274 | // open new conf | |
275 | list<string>::const_iterator c; | |
276 | for (c = conf_files.begin(); c != conf_files.end(); ++c) { | |
277 | cf.clear(); | |
278 | string fn = *c; | |
279 | expand_meta(fn, warnings); | |
280 | int ret = cf.parse_file(fn.c_str(), &parse_errors, warnings); | |
281 | if (ret == 0) | |
282 | break; | |
283 | else if (ret != -ENOENT) | |
284 | return ret; | |
285 | } | |
286 | // it must have been all ENOENTs, that's the only way we got here | |
287 | if (c == conf_files.end()) | |
288 | return -ENOENT; | |
289 | ||
290 | if (cluster.size() == 0) { | |
291 | /* | |
292 | * If cluster name is not set yet, use the prefix of the | |
293 | * basename of configuration file as cluster name. | |
294 | */ | |
295 | auto start = c->rfind('/') + 1; | |
296 | auto end = c->find(".conf", start); | |
297 | if (end == c->npos) { | |
298 | /* | |
299 | * If the configuration file does not follow $cluster.conf | |
300 | * convention, we do the last try and assign the cluster to | |
301 | * 'ceph'. | |
302 | */ | |
303 | cluster = "ceph"; | |
304 | } else { | |
305 | cluster = c->substr(start, end - start); | |
306 | } | |
307 | } | |
308 | ||
309 | std::vector <std::string> my_sections; | |
310 | _get_my_sections(my_sections); | |
c07f9fc5 FG |
311 | for (const auto &i : schema) { |
312 | const auto &opt = i.second; | |
7c673cae FG |
313 | std::string val; |
314 | int ret = _get_val_from_conf_file(my_sections, opt.name, val, false); | |
315 | if (ret == 0) { | |
316 | std::string error_message; | |
c07f9fc5 | 317 | int r = set_val_impl(val, opt, &error_message); |
7c673cae FG |
318 | if (warnings != nullptr && (r != 0 || !error_message.empty())) { |
319 | *warnings << "parse error setting '" << opt.name << "' to '" << val | |
320 | << "'"; | |
321 | if (!error_message.empty()) { | |
322 | *warnings << " (" << error_message << ")"; | |
323 | } | |
324 | *warnings << std::endl; | |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | // subsystems? | |
c07f9fc5 | 330 | for (size_t o = 0; o < subsys.get_num(); o++) { |
7c673cae FG |
331 | std::string as_option("debug_"); |
332 | as_option += subsys.get_name(o); | |
333 | std::string val; | |
334 | int ret = _get_val_from_conf_file(my_sections, as_option.c_str(), val, false); | |
335 | if (ret == 0) { | |
336 | int log, gather; | |
337 | int r = sscanf(val.c_str(), "%d/%d", &log, &gather); | |
338 | if (r >= 1) { | |
339 | if (r < 2) | |
340 | gather = log; | |
341 | // cout << "config subsys " << subsys.get_name(o) << " log " << log << " gather " << gather << std::endl; | |
342 | subsys.set_log_level(o, log); | |
343 | subsys.set_gather_level(o, gather); | |
344 | } | |
345 | } | |
346 | } | |
347 | ||
348 | // Warn about section names that look like old-style section names | |
349 | std::deque < std::string > old_style_section_names; | |
350 | for (ConfFile::const_section_iter_t s = cf.sections_begin(); | |
351 | s != cf.sections_end(); ++s) { | |
352 | const string &str(s->first); | |
353 | if (((str.find("mds") == 0) || (str.find("mon") == 0) || | |
354 | (str.find("osd") == 0)) && (str.size() > 3) && (str[3] != '.')) { | |
355 | old_style_section_names.push_back(str); | |
356 | } | |
357 | } | |
358 | if (!old_style_section_names.empty()) { | |
359 | ostringstream oss; | |
360 | cerr << "ERROR! old-style section name(s) found: "; | |
361 | string sep; | |
362 | for (std::deque < std::string >::const_iterator os = old_style_section_names.begin(); | |
363 | os != old_style_section_names.end(); ++os) { | |
364 | cerr << sep << *os; | |
365 | sep = ", "; | |
366 | } | |
367 | cerr << ". Please use the new style section names that include a period."; | |
368 | } | |
369 | return 0; | |
370 | } | |
371 | ||
372 | void md_config_t::parse_env() | |
373 | { | |
374 | Mutex::Locker l(lock); | |
375 | if (internal_safe_to_start_threads) | |
376 | return; | |
377 | if (getenv("CEPH_KEYRING")) { | |
378 | set_val_or_die("keyring", getenv("CEPH_KEYRING")); | |
379 | } | |
380 | } | |
381 | ||
382 | void md_config_t::show_config(std::ostream& out) | |
383 | { | |
384 | Mutex::Locker l(lock); | |
385 | _show_config(&out, NULL); | |
386 | } | |
387 | ||
388 | void md_config_t::show_config(Formatter *f) | |
389 | { | |
390 | Mutex::Locker l(lock); | |
391 | _show_config(NULL, f); | |
392 | } | |
393 | ||
394 | void md_config_t::_show_config(std::ostream *out, Formatter *f) | |
395 | { | |
396 | if (out) { | |
397 | *out << "name = " << name << std::endl; | |
398 | *out << "cluster = " << cluster << std::endl; | |
399 | } | |
400 | if (f) { | |
401 | f->dump_string("name", stringify(name)); | |
402 | f->dump_string("cluster", cluster); | |
403 | } | |
c07f9fc5 | 404 | for (size_t o = 0; o < subsys.get_num(); o++) { |
7c673cae FG |
405 | if (out) |
406 | *out << "debug_" << subsys.get_name(o) | |
407 | << " = " << subsys.get_log_level(o) | |
408 | << "/" << subsys.get_gather_level(o) << std::endl; | |
409 | if (f) { | |
410 | ostringstream ss; | |
411 | std::string debug_name = "debug_"; | |
412 | debug_name += subsys.get_name(o); | |
413 | ss << subsys.get_log_level(o) | |
414 | << "/" << subsys.get_gather_level(o); | |
415 | f->dump_string(debug_name.c_str(), ss.str()); | |
416 | } | |
417 | } | |
c07f9fc5 FG |
418 | for (const auto& i: schema) { |
419 | const Option &opt = i.second; | |
7c673cae FG |
420 | char *buf; |
421 | _get_val(opt.name, &buf, -1); | |
422 | if (out) | |
423 | *out << opt.name << " = " << buf << std::endl; | |
424 | if (f) | |
c07f9fc5 | 425 | f->dump_string(opt.name.c_str(), buf); |
7c673cae FG |
426 | free(buf); |
427 | } | |
428 | } | |
429 | ||
430 | int md_config_t::parse_argv(std::vector<const char*>& args) | |
431 | { | |
432 | Mutex::Locker l(lock); | |
433 | if (internal_safe_to_start_threads) { | |
434 | return -ENOSYS; | |
435 | } | |
436 | ||
437 | bool show_config = false; | |
438 | bool show_config_value = false; | |
439 | string show_config_value_arg; | |
440 | ||
441 | // In this function, don't change any parts of the configuration directly. | |
442 | // Instead, use set_val to set them. This will allow us to send the proper | |
443 | // observer notifications later. | |
444 | std::string val; | |
445 | for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ) { | |
446 | if (strcmp(*i, "--") == 0) { | |
447 | /* Normally we would use ceph_argparse_double_dash. However, in this | |
448 | * function we *don't* want to remove the double dash, because later | |
449 | * argument parses will still need to see it. */ | |
450 | break; | |
451 | } | |
452 | else if (ceph_argparse_flag(args, i, "--show_conf", (char*)NULL)) { | |
453 | cerr << cf << std::endl; | |
454 | _exit(0); | |
455 | } | |
456 | else if (ceph_argparse_flag(args, i, "--show_config", (char*)NULL)) { | |
457 | show_config = true; | |
458 | } | |
459 | else if (ceph_argparse_witharg(args, i, &val, "--show_config_value", (char*)NULL)) { | |
460 | show_config_value = true; | |
461 | show_config_value_arg = val; | |
462 | } | |
463 | else if (ceph_argparse_flag(args, i, "--foreground", "-f", (char*)NULL)) { | |
464 | set_val_or_die("daemonize", "false"); | |
465 | } | |
466 | else if (ceph_argparse_flag(args, i, "-d", (char*)NULL)) { | |
467 | set_val_or_die("daemonize", "false"); | |
468 | set_val_or_die("log_file", ""); | |
469 | set_val_or_die("log_to_stderr", "true"); | |
470 | set_val_or_die("err_to_stderr", "true"); | |
471 | set_val_or_die("log_to_syslog", "false"); | |
472 | } | |
473 | // Some stuff that we wanted to give universal single-character options for | |
474 | // Careful: you can burn through the alphabet pretty quickly by adding | |
475 | // to this list. | |
476 | else if (ceph_argparse_witharg(args, i, &val, "--monmap", "-M", (char*)NULL)) { | |
477 | set_val_or_die("monmap", val.c_str()); | |
478 | } | |
479 | else if (ceph_argparse_witharg(args, i, &val, "--mon_host", "-m", (char*)NULL)) { | |
480 | set_val_or_die("mon_host", val.c_str()); | |
481 | } | |
482 | else if (ceph_argparse_witharg(args, i, &val, "--bind", (char*)NULL)) { | |
483 | set_val_or_die("public_addr", val.c_str()); | |
484 | } | |
485 | else if (ceph_argparse_witharg(args, i, &val, "--keyfile", "-K", (char*)NULL)) { | |
486 | set_val_or_die("keyfile", val.c_str()); | |
487 | } | |
488 | else if (ceph_argparse_witharg(args, i, &val, "--keyring", "-k", (char*)NULL)) { | |
489 | set_val_or_die("keyring", val.c_str()); | |
490 | } | |
491 | else if (ceph_argparse_witharg(args, i, &val, "--client_mountpoint", "-r", (char*)NULL)) { | |
492 | set_val_or_die("client_mountpoint", val.c_str()); | |
493 | } | |
494 | else { | |
495 | parse_option(args, i, NULL); | |
496 | } | |
497 | } | |
498 | ||
499 | if (show_config) { | |
500 | expand_all_meta(); | |
501 | _show_config(&cout, NULL); | |
502 | _exit(0); | |
503 | } | |
504 | ||
505 | if (show_config_value) { | |
506 | char *buf = 0; | |
507 | int r = _get_val(show_config_value_arg.c_str(), &buf, -1); | |
508 | if (r < 0) { | |
509 | if (r == -ENOENT) | |
510 | std::cerr << "failed to get config option '" << | |
511 | show_config_value_arg << "': option not found" << std::endl; | |
512 | else | |
513 | std::cerr << "failed to get config option '" << | |
514 | show_config_value_arg << "': " << cpp_strerror(r) << std::endl; | |
515 | _exit(1); | |
516 | } | |
517 | string s = buf; | |
518 | expand_meta(s, &std::cerr); | |
519 | std::cout << s << std::endl; | |
520 | _exit(0); | |
521 | } | |
522 | ||
523 | return 0; | |
524 | } | |
525 | ||
526 | int md_config_t::parse_option(std::vector<const char*>& args, | |
527 | std::vector<const char*>::iterator& i, | |
528 | ostream *oss) | |
529 | { | |
530 | int ret = 0; | |
c07f9fc5 | 531 | size_t o = 0; |
7c673cae FG |
532 | std::string val; |
533 | ||
534 | // subsystems? | |
535 | for (o = 0; o < subsys.get_num(); o++) { | |
536 | std::string as_option("--"); | |
537 | as_option += "debug_"; | |
538 | as_option += subsys.get_name(o); | |
539 | if (ceph_argparse_witharg(args, i, &val, | |
540 | as_option.c_str(), (char*)NULL)) { | |
541 | int log, gather; | |
542 | int r = sscanf(val.c_str(), "%d/%d", &log, &gather); | |
543 | if (r >= 1) { | |
544 | if (r < 2) | |
545 | gather = log; | |
546 | // cout << "subsys " << subsys.get_name(o) << " log " << log << " gather " << gather << std::endl; | |
547 | subsys.set_log_level(o, log); | |
548 | subsys.set_gather_level(o, gather); | |
549 | if (oss) | |
550 | *oss << "debug_" << subsys.get_name(o) << "=" << log << "/" << gather << " "; | |
551 | } | |
552 | break; | |
553 | } | |
554 | } | |
555 | if (o < subsys.get_num()) { | |
556 | return ret; | |
557 | } | |
558 | ||
c07f9fc5 | 559 | std::string option_name; |
7c673cae FG |
560 | std::string error_message; |
561 | o = 0; | |
c07f9fc5 FG |
562 | for (const auto& opt_iter: schema) { |
563 | const Option &opt = opt_iter.second; | |
7c673cae | 564 | ostringstream err; |
7c673cae | 565 | std::string as_option("--"); |
c07f9fc5 FG |
566 | as_option += opt.name; |
567 | option_name = opt.name; | |
568 | if (opt.type == Option::TYPE_BOOL) { | |
7c673cae FG |
569 | int res; |
570 | if (ceph_argparse_binary_flag(args, i, &res, oss, as_option.c_str(), | |
571 | (char*)NULL)) { | |
572 | if (res == 0) | |
573 | ret = set_val_impl("false", opt, &error_message); | |
574 | else if (res == 1) | |
575 | ret = set_val_impl("true", opt, &error_message); | |
576 | else | |
577 | ret = res; | |
578 | break; | |
579 | } else { | |
580 | std::string no("--no-"); | |
c07f9fc5 | 581 | no += opt.name; |
7c673cae FG |
582 | if (ceph_argparse_flag(args, i, no.c_str(), (char*)NULL)) { |
583 | ret = set_val_impl("false", opt, &error_message); | |
584 | break; | |
585 | } | |
586 | } | |
587 | } else if (ceph_argparse_witharg(args, i, &val, err, | |
588 | as_option.c_str(), (char*)NULL)) { | |
589 | if (!err.str().empty()) { | |
590 | error_message = err.str(); | |
591 | ret = -EINVAL; | |
592 | break; | |
593 | } | |
c07f9fc5 FG |
594 | if (oss && ((!opt.is_safe()) && |
595 | (observers.find(opt.name) == observers.end()))) { | |
596 | *oss << "You cannot change " << opt.name << " using injectargs.\n"; | |
7c673cae FG |
597 | return -ENOSYS; |
598 | } | |
599 | ret = set_val_impl(val, opt, &error_message); | |
600 | break; | |
601 | } | |
602 | ++o; | |
603 | } | |
604 | ||
605 | if (ret != 0 || !error_message.empty()) { | |
c07f9fc5 | 606 | assert(!option_name.empty()); |
7c673cae FG |
607 | if (oss) { |
608 | *oss << "Parse error setting " << option_name << " to '" | |
609 | << val << "' using injectargs"; | |
610 | if (!error_message.empty()) { | |
611 | *oss << " (" << error_message << ")"; | |
612 | } | |
613 | *oss << ".\n"; | |
614 | } else { | |
615 | cerr << "parse error setting '" << option_name << "' to '" | |
616 | << val << "'"; | |
617 | if (!error_message.empty()) { | |
618 | cerr << " (" << error_message << ")"; | |
619 | } | |
620 | cerr << "\n" << std::endl; | |
621 | } | |
622 | } | |
623 | ||
c07f9fc5 | 624 | if (o == schema.size()) { |
7c673cae FG |
625 | // ignore |
626 | ++i; | |
627 | } | |
628 | return ret; | |
629 | } | |
630 | ||
631 | int md_config_t::parse_injectargs(std::vector<const char*>& args, | |
632 | std::ostream *oss) | |
633 | { | |
634 | assert(lock.is_locked()); | |
635 | int ret = 0; | |
636 | for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ) { | |
637 | int r = parse_option(args, i, oss); | |
638 | if (r < 0) | |
639 | ret = r; | |
640 | } | |
641 | return ret; | |
642 | } | |
643 | ||
644 | void md_config_t::apply_changes(std::ostream *oss) | |
645 | { | |
646 | Mutex::Locker l(lock); | |
647 | /* | |
648 | * apply changes until the cluster name is assigned | |
649 | */ | |
650 | if (cluster.size()) | |
651 | _apply_changes(oss); | |
652 | } | |
653 | ||
654 | bool md_config_t::_internal_field(const string& s) | |
655 | { | |
656 | if (s == "internal_safe_to_start_threads") | |
657 | return true; | |
658 | return false; | |
659 | } | |
660 | ||
661 | void md_config_t::_apply_changes(std::ostream *oss) | |
662 | { | |
663 | /* Maps observers to the configuration options that they care about which | |
664 | * have changed. */ | |
665 | typedef std::map < md_config_obs_t*, std::set <std::string> > rev_obs_map_t; | |
666 | ||
667 | expand_all_meta(); | |
668 | ||
c07f9fc5 FG |
669 | // expand_all_meta could have modified anything. Copy it all out again. |
670 | for (const auto &i : legacy_values) { | |
671 | const auto &name = i.first; | |
672 | const auto &option = schema.at(name); | |
673 | auto ptr = i.second; | |
674 | ||
675 | update_legacy_val(option, ptr); | |
676 | } | |
677 | ||
7c673cae FG |
678 | // create the reverse observer mapping, mapping observers to the set of |
679 | // changed keys that they'll get. | |
680 | rev_obs_map_t robs; | |
681 | std::set <std::string> empty_set; | |
682 | char buf[128]; | |
683 | char *bufptr = (char*)buf; | |
684 | for (changed_set_t::const_iterator c = changed.begin(); | |
685 | c != changed.end(); ++c) { | |
686 | const std::string &key(*c); | |
687 | pair < obs_map_t::iterator, obs_map_t::iterator > | |
688 | range(observers.equal_range(key)); | |
689 | if ((oss) && | |
690 | (!_get_val(key.c_str(), &bufptr, sizeof(buf))) && | |
691 | !_internal_field(key)) { | |
692 | (*oss) << key << " = '" << buf << "' "; | |
693 | if (range.first == range.second) { | |
694 | (*oss) << "(not observed, change may require restart) "; | |
695 | } | |
696 | } | |
697 | for (obs_map_t::iterator r = range.first; r != range.second; ++r) { | |
698 | rev_obs_map_t::value_type robs_val(r->second, empty_set); | |
699 | pair < rev_obs_map_t::iterator, bool > robs_ret(robs.insert(robs_val)); | |
700 | std::set <std::string> &keys(robs_ret.first->second); | |
701 | keys.insert(key); | |
702 | } | |
703 | } | |
704 | ||
705 | changed.clear(); | |
706 | ||
707 | // Make any pending observer callbacks | |
708 | for (rev_obs_map_t::const_iterator r = robs.begin(); r != robs.end(); ++r) { | |
709 | md_config_obs_t *obs = r->first; | |
710 | obs->handle_conf_change(this, r->second); | |
711 | } | |
712 | ||
713 | } | |
714 | ||
715 | void md_config_t::call_all_observers() | |
716 | { | |
717 | std::map<md_config_obs_t*,std::set<std::string> > obs; | |
718 | { | |
719 | Mutex::Locker l(lock); | |
720 | ||
721 | expand_all_meta(); | |
722 | ||
224ce89b | 723 | for (auto r = observers.begin(); r != observers.end(); ++r) { |
7c673cae FG |
724 | obs[r->second].insert(r->first); |
725 | } | |
726 | } | |
224ce89b | 727 | for (auto p = obs.begin(); |
7c673cae FG |
728 | p != obs.end(); |
729 | ++p) { | |
730 | p->first->handle_conf_change(this, p->second); | |
731 | } | |
732 | } | |
733 | ||
734 | int md_config_t::injectargs(const std::string& s, std::ostream *oss) | |
735 | { | |
736 | int ret; | |
737 | Mutex::Locker l(lock); | |
738 | char b[s.length()+1]; | |
739 | strcpy(b, s.c_str()); | |
740 | std::vector<const char*> nargs; | |
741 | char *p = b; | |
742 | while (*p) { | |
743 | nargs.push_back(p); | |
744 | while (*p && *p != ' ') p++; | |
745 | if (!*p) | |
746 | break; | |
747 | *p++ = 0; | |
748 | while (*p && *p == ' ') p++; | |
749 | } | |
750 | ret = parse_injectargs(nargs, oss); | |
751 | if (!nargs.empty()) { | |
752 | *oss << " failed to parse arguments: "; | |
753 | std::string prefix; | |
754 | for (std::vector<const char*>::const_iterator i = nargs.begin(); | |
755 | i != nargs.end(); ++i) { | |
756 | *oss << prefix << *i; | |
757 | prefix = ","; | |
758 | } | |
759 | *oss << "\n"; | |
760 | ret = -EINVAL; | |
761 | } | |
762 | _apply_changes(oss); | |
763 | return ret; | |
764 | } | |
765 | ||
c07f9fc5 FG |
766 | void md_config_t::set_val_or_die(const std::string &key, |
767 | const std::string &val, | |
768 | bool meta) | |
7c673cae | 769 | { |
c07f9fc5 FG |
770 | std::stringstream err; |
771 | int ret = set_val(key, val, meta, &err); | |
772 | if (ret != 0) { | |
773 | std::cerr << "set_val_or_die(" << key << "): " << err.str(); | |
7c673cae | 774 | } |
c07f9fc5 | 775 | assert(ret == 0); |
7c673cae FG |
776 | } |
777 | ||
c07f9fc5 FG |
778 | int md_config_t::set_val(const std::string &key, const char *val, |
779 | bool meta, std::stringstream *err_ss) | |
7c673cae FG |
780 | { |
781 | Mutex::Locker l(lock); | |
c07f9fc5 FG |
782 | if (key.empty()) { |
783 | if (err_ss) *err_ss << "No key specified"; | |
7c673cae | 784 | return -EINVAL; |
c07f9fc5 FG |
785 | } |
786 | if (!val) { | |
7c673cae | 787 | return -EINVAL; |
c07f9fc5 | 788 | } |
7c673cae FG |
789 | |
790 | std::string v(val); | |
791 | if (meta) | |
792 | expand_meta(v, &std::cerr); | |
793 | ||
794 | string k(ConfFile::normalize_key_name(key)); | |
795 | ||
796 | // subsystems? | |
797 | if (strncmp(k.c_str(), "debug_", 6) == 0) { | |
c07f9fc5 | 798 | for (size_t o = 0; o < subsys.get_num(); o++) { |
7c673cae FG |
799 | std::string as_option = "debug_" + subsys.get_name(o); |
800 | if (k == as_option) { | |
801 | int log, gather; | |
802 | int r = sscanf(v.c_str(), "%d/%d", &log, &gather); | |
803 | if (r >= 1) { | |
c07f9fc5 | 804 | if (r < 2) { |
7c673cae | 805 | gather = log; |
c07f9fc5 | 806 | } |
7c673cae FG |
807 | subsys.set_log_level(o, log); |
808 | subsys.set_gather_level(o, gather); | |
c07f9fc5 | 809 | if (err_ss) *err_ss << "Set " << k << " to " << log << "/" << gather; |
7c673cae FG |
810 | return 0; |
811 | } | |
c07f9fc5 FG |
812 | if (err_ss) { |
813 | *err_ss << "Invalid debug level, should be <int> or <int>/<int>"; | |
814 | } | |
7c673cae FG |
815 | return -EINVAL; |
816 | } | |
817 | } | |
818 | } | |
819 | ||
c07f9fc5 FG |
820 | const auto &opt_iter = schema.find(k); |
821 | if (opt_iter != schema.end()) { | |
822 | const Option &opt = opt_iter->second; | |
823 | if ((!opt.is_safe()) && internal_safe_to_start_threads) { | |
7c673cae | 824 | // If threads have been started and the option is not thread safe |
c07f9fc5 | 825 | if (observers.find(opt.name) == observers.end()) { |
7c673cae FG |
826 | // And there is no observer to safely change it... |
827 | // You lose. | |
c07f9fc5 FG |
828 | if (err_ss) *err_ss << "Configuration option '" << key << "' may " |
829 | "not be modified at runtime"; | |
7c673cae FG |
830 | return -ENOSYS; |
831 | } | |
832 | } | |
833 | ||
834 | std::string error_message; | |
835 | int r = set_val_impl(v, opt, &error_message); | |
c07f9fc5 FG |
836 | if (r == 0) { |
837 | if (err_ss) *err_ss << "Set " << opt.name << " to " << v; | |
838 | } else { | |
839 | if (err_ss) *err_ss << error_message; | |
840 | } | |
7c673cae FG |
841 | return r; |
842 | } | |
843 | ||
c07f9fc5 | 844 | if (err_ss) *err_ss << "Configuration option not found: '" << key << "'"; |
7c673cae FG |
845 | return -ENOENT; |
846 | } | |
847 | ||
848 | ||
c07f9fc5 | 849 | int md_config_t::get_val(const std::string &key, char **buf, int len) const |
7c673cae FG |
850 | { |
851 | Mutex::Locker l(lock); | |
852 | return _get_val(key, buf,len); | |
853 | } | |
854 | ||
c07f9fc5 | 855 | Option::value_t md_config_t::get_val_generic(const std::string &key) const |
7c673cae FG |
856 | { |
857 | Mutex::Locker l(lock); | |
858 | return _get_val(key); | |
859 | } | |
860 | ||
c07f9fc5 | 861 | Option::value_t md_config_t::_get_val(const std::string &key) const |
7c673cae FG |
862 | { |
863 | assert(lock.is_locked()); | |
864 | ||
c07f9fc5 FG |
865 | if (key.empty()) { |
866 | return Option::value_t(boost::blank()); | |
867 | } | |
7c673cae FG |
868 | |
869 | // In key names, leading and trailing whitespace are not significant. | |
870 | string k(ConfFile::normalize_key_name(key)); | |
871 | ||
c07f9fc5 FG |
872 | const auto &opt_iter = schema.find(k); |
873 | if (opt_iter != schema.end()) { | |
874 | // Using .at() is safe because all keys in the schema always have | |
875 | // entries in ::values | |
876 | return values.at(k); | |
877 | } else { | |
878 | return Option::value_t(boost::blank()); | |
7c673cae | 879 | } |
7c673cae FG |
880 | } |
881 | ||
c07f9fc5 | 882 | int md_config_t::_get_val(const std::string &key, std::string *value) const { |
7c673cae FG |
883 | assert(lock.is_locked()); |
884 | ||
885 | std::string normalized_key(ConfFile::normalize_key_name(key)); | |
c07f9fc5 FG |
886 | Option::value_t config_value = _get_val(normalized_key.c_str()); |
887 | if (!boost::get<boost::blank>(&config_value)) { | |
7c673cae FG |
888 | ostringstream oss; |
889 | if (bool *flag = boost::get<bool>(&config_value)) { | |
890 | oss << (*flag ? "true" : "false"); | |
224ce89b | 891 | } else if (double *dp = boost::get<double>(&config_value)) { |
c07f9fc5 | 892 | oss << std::fixed << *dp; |
7c673cae FG |
893 | } else { |
894 | oss << config_value; | |
895 | } | |
896 | *value = oss.str(); | |
897 | return 0; | |
898 | } | |
899 | return -ENOENT; | |
900 | } | |
901 | ||
c07f9fc5 | 902 | int md_config_t::_get_val(const std::string &key, char **buf, int len) const |
7c673cae FG |
903 | { |
904 | assert(lock.is_locked()); | |
905 | ||
c07f9fc5 | 906 | if (key.empty()) |
7c673cae FG |
907 | return -EINVAL; |
908 | ||
224ce89b | 909 | string val ; |
c07f9fc5 | 910 | if (_get_val(key, &val) == 0) { |
224ce89b | 911 | int l = val.length() + 1; |
7c673cae FG |
912 | if (len == -1) { |
913 | *buf = (char*)malloc(l); | |
914 | if (!*buf) | |
915 | return -ENOMEM; | |
224ce89b | 916 | strncpy(*buf, val.c_str(), l); |
7c673cae FG |
917 | return 0; |
918 | } | |
224ce89b | 919 | snprintf(*buf, len, "%s", val.c_str()); |
7c673cae FG |
920 | return (l > len) ? -ENAMETOOLONG : 0; |
921 | } | |
922 | ||
224ce89b | 923 | string k(ConfFile::normalize_key_name(key)); |
7c673cae | 924 | // subsys? |
c07f9fc5 | 925 | for (size_t o = 0; o < subsys.get_num(); o++) { |
7c673cae FG |
926 | std::string as_option = "debug_" + subsys.get_name(o); |
927 | if (k == as_option) { | |
928 | if (len == -1) { | |
929 | *buf = (char*)malloc(20); | |
930 | len = 20; | |
931 | } | |
932 | int l = snprintf(*buf, len, "%d/%d", subsys.get_log_level(o), subsys.get_gather_level(o)); | |
933 | return (l == len) ? -ENAMETOOLONG : 0; | |
934 | } | |
935 | } | |
936 | ||
937 | // couldn't find a configuration option with key 'k' | |
938 | return -ENOENT; | |
939 | } | |
940 | ||
941 | void md_config_t::get_all_keys(std::vector<std::string> *keys) const { | |
942 | const std::string negative_flag_prefix("no_"); | |
943 | ||
944 | keys->clear(); | |
c07f9fc5 FG |
945 | keys->reserve(schema.size()); |
946 | for (const auto &i: schema) { | |
947 | const Option &opt = i.second; | |
7c673cae | 948 | keys->push_back(opt.name); |
c07f9fc5 | 949 | if (opt.type == Option::TYPE_BOOL) { |
7c673cae FG |
950 | keys->push_back(negative_flag_prefix + opt.name); |
951 | } | |
952 | } | |
c07f9fc5 | 953 | for (size_t i = 0; i < subsys.get_num(); ++i) { |
7c673cae FG |
954 | keys->push_back("debug_" + subsys.get_name(i)); |
955 | } | |
956 | } | |
957 | ||
958 | /* The order of the sections here is important. The first section in the | |
959 | * vector is the "highest priority" section; if we find it there, we'll stop | |
960 | * looking. The lowest priority section is the one we look in only if all | |
961 | * others had nothing. This should always be the global section. | |
962 | */ | |
963 | void md_config_t::get_my_sections(std::vector <std::string> §ions) const | |
964 | { | |
965 | Mutex::Locker l(lock); | |
966 | _get_my_sections(sections); | |
967 | } | |
968 | ||
969 | void md_config_t::_get_my_sections(std::vector <std::string> §ions) const | |
970 | { | |
971 | assert(lock.is_locked()); | |
972 | sections.push_back(name.to_str()); | |
973 | ||
974 | sections.push_back(name.get_type_name()); | |
975 | ||
976 | sections.push_back("global"); | |
977 | } | |
978 | ||
979 | // Return a list of all sections | |
980 | int md_config_t::get_all_sections(std::vector <std::string> §ions) const | |
981 | { | |
982 | Mutex::Locker l(lock); | |
983 | for (ConfFile::const_section_iter_t s = cf.sections_begin(); | |
984 | s != cf.sections_end(); ++s) { | |
985 | sections.push_back(s->first); | |
986 | } | |
987 | return 0; | |
988 | } | |
989 | ||
990 | int md_config_t::get_val_from_conf_file(const std::vector <std::string> §ions, | |
c07f9fc5 | 991 | const std::string &key, std::string &out, bool emeta) const |
7c673cae FG |
992 | { |
993 | Mutex::Locker l(lock); | |
994 | return _get_val_from_conf_file(sections, key, out, emeta); | |
995 | } | |
996 | ||
997 | int md_config_t::_get_val_from_conf_file(const std::vector <std::string> §ions, | |
c07f9fc5 | 998 | const std::string &key, std::string &out, bool emeta) const |
7c673cae FG |
999 | { |
1000 | assert(lock.is_locked()); | |
1001 | std::vector <std::string>::const_iterator s = sections.begin(); | |
1002 | std::vector <std::string>::const_iterator s_end = sections.end(); | |
1003 | for (; s != s_end; ++s) { | |
1004 | int ret = cf.read(s->c_str(), key, out); | |
1005 | if (ret == 0) { | |
1006 | if (emeta) | |
1007 | expand_meta(out, &std::cerr); | |
1008 | return 0; | |
1009 | } | |
1010 | else if (ret != -ENOENT) | |
1011 | return ret; | |
1012 | } | |
1013 | return -ENOENT; | |
1014 | } | |
1015 | ||
c07f9fc5 | 1016 | int md_config_t::set_val_impl(const std::string &raw_val, const Option &opt, |
7c673cae FG |
1017 | std::string *error_message) |
1018 | { | |
1019 | assert(lock.is_locked()); | |
7c673cae | 1020 | |
c07f9fc5 | 1021 | std::string val = raw_val; |
7c673cae | 1022 | |
c07f9fc5 FG |
1023 | int r = opt.pre_validate(&val, error_message); |
1024 | if (r != 0) { | |
1025 | return r; | |
1026 | } | |
7c673cae | 1027 | |
c07f9fc5 FG |
1028 | Option::value_t new_value; |
1029 | if (opt.type == Option::TYPE_INT) { | |
1030 | int64_t f = strict_si_cast<int64_t>(val.c_str(), error_message); | |
1031 | if (!error_message->empty()) { | |
1032 | return -EINVAL; | |
1033 | } | |
1034 | new_value = f; | |
1035 | } else if (opt.type == Option::TYPE_UINT) { | |
1036 | uint64_t f = strict_si_cast<uint64_t>(val.c_str(), error_message); | |
1037 | if (!error_message->empty()) { | |
1038 | return -EINVAL; | |
1039 | } | |
1040 | new_value = f; | |
1041 | } else if (opt.type == Option::TYPE_STR) { | |
1042 | new_value = val; | |
1043 | } else if (opt.type == Option::TYPE_FLOAT) { | |
1044 | double f = strict_strtod(val.c_str(), error_message); | |
1045 | if (!error_message->empty()) { | |
1046 | return -EINVAL; | |
1047 | } else { | |
1048 | new_value = f; | |
1049 | } | |
1050 | } else if (opt.type == Option::TYPE_BOOL) { | |
1051 | if (strcasecmp(val.c_str(), "false") == 0) { | |
1052 | new_value = false; | |
1053 | } else if (strcasecmp(val.c_str(), "true") == 0) { | |
1054 | new_value = true; | |
1055 | } else { | |
1056 | int b = strict_strtol(val.c_str(), 10, error_message); | |
1057 | if (!error_message->empty()) { | |
1058 | return -EINVAL; | |
1059 | } | |
1060 | new_value = !!b; | |
1061 | } | |
1062 | } else if (opt.type == Option::TYPE_ADDR) { | |
1063 | entity_addr_t addr; | |
1064 | if (!addr.parse(val.c_str())){ | |
1065 | return -EINVAL; | |
1066 | } | |
1067 | new_value = addr; | |
1068 | } else if (opt.type == Option::TYPE_UUID) { | |
1069 | uuid_d uuid; | |
1070 | if (!uuid.parse(val.c_str())) { | |
1071 | return -EINVAL; | |
1072 | } | |
1073 | new_value = uuid; | |
1074 | } else { | |
1075 | ceph_abort(); | |
7c673cae | 1076 | } |
7c673cae | 1077 | |
c07f9fc5 FG |
1078 | r = opt.validate(new_value, error_message); |
1079 | if (r != 0) { | |
1080 | return r; | |
7c673cae | 1081 | } |
7c673cae | 1082 | |
7c673cae | 1083 | |
c07f9fc5 FG |
1084 | // Apply the value to its entry in the `values` map |
1085 | values[opt.name] = new_value; | |
7c673cae | 1086 | |
c07f9fc5 FG |
1087 | // Apply the value to its legacy field, if it has one |
1088 | auto legacy_ptr_iter = legacy_values.find(std::string(opt.name)); | |
1089 | if (legacy_ptr_iter != legacy_values.end()) { | |
1090 | update_legacy_val(opt, legacy_ptr_iter->second); | |
7c673cae FG |
1091 | } |
1092 | ||
c07f9fc5 FG |
1093 | changed.insert(opt.name); |
1094 | return 0; | |
1095 | } | |
7c673cae | 1096 | |
c07f9fc5 FG |
1097 | /** |
1098 | * Handles assigning from a variant-of-types to a variant-of-pointers-to-types | |
1099 | */ | |
1100 | class assign_visitor : public boost::static_visitor<> | |
1101 | { | |
1102 | md_config_t *conf; | |
1103 | Option::value_t val; | |
1104 | public: | |
7c673cae | 1105 | |
c07f9fc5 FG |
1106 | assign_visitor(md_config_t *conf_, Option::value_t val_) |
1107 | : conf(conf_), val(val_) | |
1108 | {} | |
1109 | ||
1110 | template <typename T> | |
1111 | void operator()( T md_config_t::* ptr) const | |
1112 | { | |
1113 | T *member = const_cast<T *>(&(conf->*(boost::get<const T md_config_t::*>(ptr)))); | |
1114 | ||
1115 | *member = boost::get<T>(val); | |
7c673cae FG |
1116 | } |
1117 | }; | |
1118 | ||
c07f9fc5 FG |
1119 | void md_config_t::update_legacy_val(const Option &opt, |
1120 | md_config_t::member_ptr_t member_ptr) | |
7c673cae | 1121 | { |
c07f9fc5 FG |
1122 | if (boost::get<boost::blank>(&values.at(opt.name))) { |
1123 | // This shouldn't happen, but if it does then just don't even | |
1124 | // try to assign to the legacy field. | |
1125 | return; | |
1126 | } | |
1127 | ||
1128 | boost::apply_visitor(assign_visitor(this, values.at(opt.name)), member_ptr); | |
7c673cae FG |
1129 | } |
1130 | ||
c07f9fc5 | 1131 | |
7c673cae FG |
1132 | static const char *CONF_METAVARIABLES[] = { |
1133 | "data_dir", // put this first: it may contain some of the others | |
1134 | "cluster", "type", "name", "host", "num", "id", "pid", "cctid" | |
1135 | }; | |
1136 | static const int NUM_CONF_METAVARIABLES = | |
1137 | (sizeof(CONF_METAVARIABLES) / sizeof(CONF_METAVARIABLES[0])); | |
1138 | ||
1139 | void md_config_t::expand_all_meta() | |
1140 | { | |
1141 | // Expand all metavariables | |
1142 | ostringstream oss; | |
c07f9fc5 FG |
1143 | for (const auto &i : schema) { |
1144 | const Option &opt = i.second; | |
1145 | ||
1146 | if (opt.type == Option::TYPE_STR) { | |
1147 | list<const Option*> stack; | |
1148 | std::string *str = boost::get<std::string>(&(values.at(opt.name))); | |
1149 | assert(str != nullptr); // Non-string values should never get in | |
7c673cae FG |
1150 | expand_meta(*str, &opt, stack, &oss); |
1151 | } | |
1152 | } | |
1153 | cerr << oss.str(); | |
1154 | } | |
1155 | ||
c07f9fc5 | 1156 | bool md_config_t::expand_meta(std::string &val, |
7c673cae FG |
1157 | std::ostream *oss) const |
1158 | { | |
c07f9fc5 FG |
1159 | list<const Option*> stack; |
1160 | return expand_meta(val, NULL, stack, oss); | |
7c673cae FG |
1161 | } |
1162 | ||
1163 | bool md_config_t::expand_meta(std::string &origval, | |
c07f9fc5 FG |
1164 | const Option *opt, |
1165 | std::list<const Option *> stack, | |
7c673cae FG |
1166 | std::ostream *oss) const |
1167 | { | |
1168 | assert(lock.is_locked()); | |
1169 | ||
1170 | // no $ means no variable expansion is necessary | |
1171 | if (origval.find("$") == string::npos) | |
1172 | return false; | |
1173 | ||
1174 | // ignore an expansion loop and create a human readable | |
1175 | // message about it | |
1176 | if (opt) { | |
c07f9fc5 FG |
1177 | for (const auto stack_ptr : stack) { |
1178 | if (opt->name == stack_ptr->name) { | |
7c673cae FG |
1179 | *oss << "variable expansion loop at " |
1180 | << opt->name << "=" << origval << std::endl; | |
1181 | *oss << "expansion stack: " << std::endl; | |
c07f9fc5 FG |
1182 | for (const auto j : stack) { |
1183 | std::string val; | |
1184 | _get_val(j->name, &val); | |
1185 | *oss << j->name << "=" << val << std::endl; | |
7c673cae FG |
1186 | } |
1187 | return false; | |
1188 | } | |
1189 | } | |
7c673cae | 1190 | |
7c673cae | 1191 | stack.push_front(opt); |
c07f9fc5 | 1192 | } |
7c673cae FG |
1193 | |
1194 | bool found_meta = false; | |
1195 | string out; | |
1196 | string val = origval; | |
1197 | for (string::size_type s = 0; s < val.size(); ) { | |
1198 | if (val[s] != '$') { | |
1199 | out += val[s++]; | |
1200 | continue; | |
1201 | } | |
1202 | ||
1203 | // try to parse the variable name into var, either \$\{(.+)\} or | |
1204 | // \$[a-z\_]+ | |
1205 | const char *valid_chars = "abcdefghijklmnopqrstuvwxyz_"; | |
1206 | string var; | |
1207 | size_t endpos = 0; | |
1208 | if (val[s+1] == '{') { | |
1209 | // ...${foo_bar}... | |
1210 | endpos = val.find_first_not_of(valid_chars, s+2); | |
1211 | if (endpos != std::string::npos && | |
1212 | val[endpos] == '}') { | |
1213 | var = val.substr(s+2, endpos-s-2); | |
1214 | endpos++; | |
1215 | } | |
1216 | } else { | |
1217 | // ...$foo... | |
1218 | endpos = val.find_first_not_of(valid_chars, s+1); | |
1219 | if (endpos != std::string::npos) | |
1220 | var = val.substr(s+1, endpos-s-1); | |
1221 | else | |
1222 | var = val.substr(s+1); | |
1223 | } | |
1224 | ||
1225 | bool expanded = false; | |
1226 | if (var.length()) { | |
1227 | // special metavariable? | |
1228 | for (int i = 0; i < NUM_CONF_METAVARIABLES; ++i) { | |
1229 | if (var != CONF_METAVARIABLES[i]) | |
1230 | continue; | |
1231 | //cout << " meta match of " << var << " " << CONF_METAVARIABLES[i] << std::endl; | |
1232 | if (var == "type") | |
1233 | out += name.get_type_name(); | |
1234 | else if (var == "cluster") | |
1235 | out += cluster; | |
1236 | else if (var == "name") | |
1237 | out += name.to_cstr(); | |
1238 | else if (var == "host") | |
1239 | { | |
1240 | if (host == "") | |
1241 | out += ceph_get_short_hostname(); | |
1242 | else | |
1243 | out += host; | |
1244 | } | |
1245 | else if (var == "num") | |
1246 | out += name.get_id().c_str(); | |
1247 | else if (var == "id") | |
1248 | out += name.get_id().c_str(); | |
1249 | else if (var == "pid") | |
1250 | out += stringify(getpid()); | |
1251 | else if (var == "cctid") | |
1252 | out += stringify((unsigned long long)this); | |
1253 | else if (var == "data_dir") { | |
1254 | if (data_dir_option.length()) { | |
1255 | char *vv = NULL; | |
1256 | _get_val(data_dir_option.c_str(), &vv, -1); | |
1257 | string tmp = vv; | |
1258 | free(vv); | |
1259 | expand_meta(tmp, NULL, stack, oss); | |
1260 | out += tmp; | |
1261 | } else { | |
1262 | // this isn't really right, but it'll result in a mangled | |
1263 | // non-existent path that will fail any search list | |
1264 | out += "$data_dir"; | |
1265 | } | |
1266 | } else | |
1267 | ceph_abort(); // unreachable | |
1268 | expanded = true; | |
1269 | } | |
1270 | ||
1271 | if (!expanded) { | |
1272 | // config option? | |
c07f9fc5 FG |
1273 | const auto other_opt_iter = schema.find(var); |
1274 | if (other_opt_iter != schema.end()) { | |
1275 | const Option &other_opt = other_opt_iter->second; | |
1276 | if (other_opt.type == Option::TYPE_STR) { | |
1277 | // The referenced option is a string, it may need substitution | |
1278 | // before inserting. | |
1279 | Option::value_t *other_val_ptr = const_cast<Option::value_t*>(&(values.at(other_opt.name))); | |
1280 | std::string *other_opt_val = boost::get<std::string>(other_val_ptr); | |
1281 | expand_meta(*other_opt_val, &other_opt, stack, oss); | |
1282 | out += *other_opt_val; | |
1283 | } else { | |
1284 | // The referenced option is not a string: retrieve and insert | |
1285 | // its stringized form. | |
1286 | char *vv = NULL; | |
1287 | _get_val(other_opt.name, &vv, -1); | |
1288 | out += vv; | |
1289 | free(vv); | |
1290 | } | |
1291 | expanded = true; | |
7c673cae FG |
1292 | } |
1293 | } | |
1294 | } | |
1295 | ||
1296 | if (expanded) { | |
1297 | found_meta = true; | |
1298 | s = endpos; | |
1299 | } else { | |
1300 | out += val[s++]; | |
1301 | } | |
1302 | } | |
1303 | // override the original value with the expanded value | |
1304 | origval = out; | |
1305 | return found_meta; | |
1306 | } | |
1307 | ||
1308 | void md_config_t::diff( | |
31f18b77 FG |
1309 | const md_config_t *other, |
1310 | map<string, pair<string, string> > *diff, | |
1311 | set<string> *unknown) | |
1312 | { | |
1313 | diff_helper(other, diff, unknown); | |
1314 | } | |
1315 | void md_config_t::diff( | |
1316 | const md_config_t *other, | |
1317 | map<string, pair<string, string> > *diff, | |
1318 | set<string> *unknown, const string& setting) | |
1319 | { | |
1320 | diff_helper(other, diff, unknown, setting); | |
1321 | } | |
1322 | ||
1323 | void md_config_t::diff_helper( | |
7c673cae FG |
1324 | const md_config_t *other, |
1325 | map<string,pair<string,string> > *diff, | |
31f18b77 | 1326 | set<string> *unknown, const string& setting) |
7c673cae FG |
1327 | { |
1328 | Mutex::Locker l(lock); | |
1329 | ||
1330 | char local_buf[4096]; | |
1331 | char other_buf[4096]; | |
c07f9fc5 FG |
1332 | for (const auto &i : schema) { |
1333 | const Option &opt = i.second; | |
31f18b77 FG |
1334 | if (!setting.empty()) { |
1335 | if (setting != opt.name) { | |
1336 | continue; | |
1337 | } | |
1338 | } | |
7c673cae FG |
1339 | memset(local_buf, 0, sizeof(local_buf)); |
1340 | memset(other_buf, 0, sizeof(other_buf)); | |
1341 | ||
1342 | char *other_val = other_buf; | |
1343 | int err = other->get_val(opt.name, &other_val, sizeof(other_buf)); | |
1344 | if (err < 0) { | |
1345 | if (err == -ENOENT) { | |
1346 | unknown->insert(opt.name); | |
1347 | } | |
1348 | continue; | |
1349 | } | |
1350 | ||
1351 | char *local_val = local_buf; | |
1352 | err = _get_val(opt.name, &local_val, sizeof(local_buf)); | |
1353 | if (err != 0) | |
1354 | continue; | |
1355 | ||
1356 | if (strcmp(local_val, other_val)) | |
1357 | diff->insert(make_pair(opt.name, make_pair(local_val, other_val))); | |
31f18b77 FG |
1358 | else if (!setting.empty()) { |
1359 | diff->insert(make_pair(opt.name, make_pair(local_val, other_val))); | |
1360 | break; | |
1361 | } | |
7c673cae FG |
1362 | } |
1363 | } | |
1364 | ||
1365 | void md_config_t::complain_about_parse_errors(CephContext *cct) | |
1366 | { | |
1367 | ::complain_about_parse_errors(cct, &parse_errors); | |
1368 | } | |
1369 |