1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/* SPDX-License-Identifier: LGPL-2.1+ */
/***
This file is part of systemd.
Copyright 2012 Zbigniew Jędrzejewski-Szmek
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "alloc-util.h"
#include "journal-remote.h"
static int do_rotate(JournalFile **f, bool compress, bool seal) {
int r = journal_file_rotate(f, compress, seal, NULL);
if (r < 0) {
if (*f)
log_error_errno(r, "Failed to rotate %s: %m", (*f)->path);
else
log_error_errno(r, "Failed to create rotated journal: %m");
}
return r;
}
Writer* writer_new(RemoteServer *server) {
Writer *w;
w = new0(Writer, 1);
if (!w)
return NULL;
memset(&w->metrics, 0xFF, sizeof(w->metrics));
w->mmap = mmap_cache_new();
if (!w->mmap)
return mfree(w);
w->n_ref = 1;
w->server = server;
return w;
}
Writer* writer_free(Writer *w) {
if (!w)
return NULL;
if (w->journal) {
log_debug("Closing journal file %s.", w->journal->path);
journal_file_close(w->journal);
}
if (w->server && w->hashmap_key)
hashmap_remove(w->server->writers, w->hashmap_key);
free(w->hashmap_key);
if (w->mmap)
mmap_cache_unref(w->mmap);
return mfree(w);
}
Writer* writer_unref(Writer *w) {
if (w && (-- w->n_ref <= 0))
writer_free(w);
return NULL;
}
Writer* writer_ref(Writer *w) {
if (w)
assert_se(++ w->n_ref >= 2);
return w;
}
int writer_write(Writer *w,
struct iovec_wrapper *iovw,
dual_timestamp *ts,
bool compress,
bool seal) {
int r;
assert(w);
assert(iovw);
assert(iovw->count > 0);
if (journal_file_rotate_suggested(w->journal, 0)) {
log_info("%s: Journal header limits reached or header out-of-date, rotating",
w->journal->path);
r = do_rotate(&w->journal, compress, seal);
if (r < 0)
return r;
}
r = journal_file_append_entry(w->journal, ts, iovw->iovec, iovw->count,
&w->seqnum, NULL, NULL);
if (r >= 0) {
if (w->server)
w->server->event_count += 1;
return 1;
}
log_debug_errno(r, "%s: Write failed, rotating: %m", w->journal->path);
r = do_rotate(&w->journal, compress, seal);
if (r < 0)
return r;
else
log_debug("%s: Successfully rotated journal", w->journal->path);
log_debug("Retrying write.");
r = journal_file_append_entry(w->journal, ts, iovw->iovec, iovw->count,
&w->seqnum, NULL, NULL);
if (r < 0)
return r;
if (w->server)
w->server->event_count += 1;
return 1;
}
|
