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git.proxmox.com Git - systemd.git/blob - src/journal-remote/journal-remote-write.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2012 Zbigniew Jędrzejewski-Szmek
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
22 #include "journal-remote.h"
24 int iovw_put(struct iovec_wrapper
*iovw
, void* data
, size_t len
) {
25 if (!GREEDY_REALLOC(iovw
->iovec
, iovw
->size_bytes
, iovw
->count
+ 1))
28 iovw
->iovec
[iovw
->count
++] = (struct iovec
) {data
, len
};
32 void iovw_free_contents(struct iovec_wrapper
*iovw
) {
35 iovw
->size_bytes
= iovw
->count
= 0;
38 size_t iovw_size(struct iovec_wrapper
*iovw
) {
41 for (i
= 0; i
< iovw
->count
; i
++)
42 n
+= iovw
->iovec
[i
].iov_len
;
47 void iovw_rebase(struct iovec_wrapper
*iovw
, char *old
, char *new) {
50 for (i
= 0; i
< iovw
->count
; i
++)
51 iovw
->iovec
[i
].iov_base
= (char*) iovw
->iovec
[i
].iov_base
- old
+ new;
54 /**********************************************************************
55 **********************************************************************
56 **********************************************************************/
58 static int do_rotate(JournalFile
**f
, bool compress
, bool seal
) {
59 int r
= journal_file_rotate(f
, compress
, seal
);
62 log_error_errno(r
, "Failed to rotate %s: %m", (*f
)->path
);
64 log_error_errno(r
, "Failed to create rotated journal: %m");
70 Writer
* writer_new(RemoteServer
*server
) {
77 memset(&w
->metrics
, 0xFF, sizeof(w
->metrics
));
79 w
->mmap
= mmap_cache_new();
91 Writer
* writer_free(Writer
*w
) {
96 log_debug("Closing journal file %s.", w
->journal
->path
);
97 journal_file_close(w
->journal
);
100 if (w
->server
&& w
->hashmap_key
)
101 hashmap_remove(w
->server
->writers
, w
->hashmap_key
);
103 free(w
->hashmap_key
);
106 mmap_cache_unref(w
->mmap
);
113 Writer
* writer_unref(Writer
*w
) {
114 if (w
&& (-- w
->n_ref
<= 0))
120 Writer
* writer_ref(Writer
*w
) {
122 assert_se(++ w
->n_ref
>= 2);
127 int writer_write(Writer
*w
,
128 struct iovec_wrapper
*iovw
,
136 assert(iovw
->count
> 0);
138 if (journal_file_rotate_suggested(w
->journal
, 0)) {
139 log_info("%s: Journal header limits reached or header out-of-date, rotating",
141 r
= do_rotate(&w
->journal
, compress
, seal
);
146 r
= journal_file_append_entry(w
->journal
, ts
, iovw
->iovec
, iovw
->count
,
147 &w
->seqnum
, NULL
, NULL
);
150 w
->server
->event_count
+= 1;
154 log_debug_errno(r
, "%s: Write failed, rotating: %m", w
->journal
->path
);
155 r
= do_rotate(&w
->journal
, compress
, seal
);
159 log_debug("%s: Successfully rotated journal", w
->journal
->path
);
161 log_debug("Retrying write.");
162 r
= journal_file_append_entry(w
->journal
, ts
, iovw
->iovec
, iovw
->count
,
163 &w
->seqnum
, NULL
, NULL
);
168 w
->server
->event_count
+= 1;