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+                log_info("%s: Journal header limits reached or header out-of-date, rotating",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;
+}