1 files changed, 39 insertions, 0 deletions
diff --git a/database/engine/metadata_log/logfile.h b/database/engine/metadata_log/logfile.h
new file mode 100644
index 000000000..df12ac714
--- /dev/null
+++ b/database/engine/metadata_log/logfile.h
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_LOGFILE_H
+#define NETDATA_LOGFILE_H
+
+#include "metadatalogprotocol.h"
+#include "../rrdengine.h"
+
+/* Forward declarations */
+struct metadata_logfile;
+struct metalog_worker_config;
+
+#define METALOG_PREFIX "metadatalog-"
+#define METALOG_EXTENSION ".mlf"
+
+/* only one event loop is supported for now */
+struct metadata_logfile {
+    unsigned fileno; /* Starts at 1 */
+    unsigned starting_fileno; /* 0 for normal files, staring number during compaction */
+    uv_file file;
+    uint64_t pos;
+    struct metalog_instance *ctx;
+    struct metadata_logfile *next;
+};
+
+struct metadata_logfile_list {
+    struct metadata_logfile *first; /* oldest */
+    struct metadata_logfile *last; /* newest */
+};
+
+extern void generate_metadata_logfile_path(struct metadata_logfile *metadatalog, char *str, size_t maxlen);
+extern int rename_metadata_logfile(struct metadata_logfile *metalogfile, unsigned new_starting_fileno,
+                                   unsigned new_fileno);
+extern int unlink_metadata_logfile(struct metadata_logfile *metalogfile);
+extern int load_metadata_logfile(struct metalog_instance *ctx, struct metadata_logfile *logfile);
+extern int init_metalog_files(struct metalog_instance *ctx);
+
+
+#endif /* NETDATA_LOGFILE_H */