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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-03-25 22:30:24 -0400
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-07-15 22:23:47 -0400
commit1e4e7b71e1938daa9b2b9718a9f54c69017a9ef5 (patch)
treed133142bfb49ad0f6c5e0bd50313867672e9a726 /src/journal-remote/journal-remote-write.c
parent5937a4d4f263a5a3254e081c6dbb1ea2f860d471 (diff)
Move network-related journal programs to src/journal-remote/
Directory src/journal has become one of the largest directories, and since systemd-journal-gatewayd, systemd-journal-remote, and forthcoming systemd-journal-upload are all closely related, create a separate directory for them.
Diffstat (limited to 'src/journal-remote/journal-remote-write.c')
-rw-r--r--src/journal-remote/journal-remote-write.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/src/journal-remote/journal-remote-write.c b/src/journal-remote/journal-remote-write.c
new file mode 100644
index 0000000000..4d142bdc97
--- /dev/null
+++ b/src/journal-remote/journal-remote-write.c
@@ -0,0 +1,124 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ 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 "journal-remote-write.h"
+
+int iovw_put(struct iovec_wrapper *iovw, void* data, size_t len) {
+ if (!GREEDY_REALLOC(iovw->iovec, iovw->size_bytes, iovw->count + 1))
+ return log_oom();
+
+ iovw->iovec[iovw->count++] = (struct iovec) {data, len};
+ return 0;
+}
+
+void iovw_free_contents(struct iovec_wrapper *iovw) {
+ for (size_t j = 0; j < iovw->count; j++)
+ free(iovw->iovec[j].iov_base);
+ free(iovw->iovec);
+ iovw->iovec = NULL;
+ iovw->size_bytes = iovw->count = 0;
+}
+
+size_t iovw_size(struct iovec_wrapper *iovw) {
+ size_t n = 0, i;
+
+ for(i = 0; i < iovw->count; i++)
+ n += iovw->iovec[i].iov_len;
+
+ return n;
+}
+
+/**********************************************************************
+ **********************************************************************
+ **********************************************************************/
+
+static int do_rotate(JournalFile **f, bool compress, bool seal) {
+ int r = journal_file_rotate(f, compress, seal);
+ if (r < 0) {
+ if (*f)
+ log_error("Failed to rotate %s: %s", (*f)->path,
+ strerror(-r));
+ else
+ log_error("Failed to create rotated journal: %s",
+ strerror(-r));
+ }
+
+ return r;
+}
+
+int writer_init(Writer *s) {
+ assert(s);
+
+ s->journal = NULL;
+
+ memset(&s->metrics, 0xFF, sizeof(s->metrics));
+
+ s->mmap = mmap_cache_new();
+ if (!s->mmap)
+ return log_oom();
+
+ s->seqnum = 0;
+
+ return 0;
+}
+
+int writer_close(Writer *s) {
+ if (s->journal)
+ journal_file_close(s->journal);
+ if (s->mmap)
+ mmap_cache_unref(s->mmap);
+ return 0;
+}
+
+int writer_write(Writer *s,
+ struct iovec_wrapper *iovw,
+ dual_timestamp *ts,
+ bool compress,
+ bool seal) {
+ int r;
+
+ assert(s);
+ assert(iovw);
+ assert(iovw->count > 0);
+
+ if (journal_file_rotate_suggested(s->journal, 0)) {
+ log_info("%s: Journal header limits reached or header out-of-date, rotating",
+ s->journal->path);
+ r = do_rotate(&s->journal, compress, seal);
+ if (r < 0)
+ return r;
+ }
+
+ r = journal_file_append_entry(s->journal, ts, iovw->iovec, iovw->count,
+ &s->seqnum, NULL, NULL);
+ if (r >= 0)
+ return 1;
+
+ log_info("%s: Write failed, rotating", s->journal->path);
+ r = do_rotate(&s->journal, compress, seal);
+ if (r < 0)
+ return r;
+
+ log_debug("Retrying write.");
+ r = journal_file_append_entry(s->journal, ts, iovw->iovec, iovw->count,
+ &s->seqnum, NULL, NULL);
+ return r < 0 ? r : 1;
+}