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-rw-r--r--src/journal-remote/journal-remote-write.c107
1 files changed, 107 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 0000000..f4f3b64
--- /dev/null
+++ b/src/journal-remote/journal-remote-write.c
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "journal-remote.h"
+
+static int do_rotate(ManagedJournalFile **f, MMapCache *m, JournalFileFlags file_flags) {
+ int r;
+
+ r = managed_journal_file_rotate(f, m, file_flags, UINT64_MAX, NULL);
+ if (r < 0) {
+ if (*f)
+ log_error_errno(r, "Failed to rotate %s: %m", (*f)->file->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;
+}
+
+static Writer* writer_free(Writer *w) {
+ if (!w)
+ return NULL;
+
+ if (w->journal) {
+ log_debug("Closing journal file %s.", w->journal->file->path);
+ managed_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);
+}
+
+DEFINE_TRIVIAL_REF_UNREF_FUNC(Writer, writer, writer_free);
+
+int writer_write(Writer *w,
+ const struct iovec_wrapper *iovw,
+ const dual_timestamp *ts,
+ const sd_id128_t *boot_id,
+ JournalFileFlags file_flags) {
+ int r;
+
+ assert(w);
+ assert(iovw);
+ assert(iovw->count > 0);
+
+ if (journal_file_rotate_suggested(w->journal->file, 0, LOG_DEBUG)) {
+ log_info("%s: Journal header limits reached or header out-of-date, rotating",
+ w->journal->file->path);
+ r = do_rotate(&w->journal, w->mmap, file_flags);
+ if (r < 0)
+ return r;
+ }
+
+ r = journal_file_append_entry(w->journal->file, ts, boot_id,
+ iovw->iovec, iovw->count,
+ &w->seqnum, NULL, NULL);
+ if (r >= 0) {
+ if (w->server)
+ w->server->event_count += 1;
+ return 0;
+ } else if (r == -EBADMSG)
+ return r;
+
+ log_debug_errno(r, "%s: Write failed, rotating: %m", w->journal->file->path);
+ r = do_rotate(&w->journal, w->mmap, file_flags);
+ if (r < 0)
+ return r;
+ else
+ log_debug("%s: Successfully rotated journal", w->journal->file->path);
+
+ log_debug("Retrying write.");
+ r = journal_file_append_entry(w->journal->file, ts, boot_id,
+ iovw->iovec, iovw->count,
+ &w->seqnum, NULL, NULL);
+ if (r < 0)
+ return r;
+
+ if (w->server)
+ w->server->event_count += 1;
+ return 0;
+}