Version 0.8

2026-02-19 15:27:47 +01:00
commit 868312edf8
37 changed files with 12782 additions and 0 deletions
@@ -0,0 +1,38 @@
+#ifndef WAL_INCLUDED
+#define WAL_INCLUDED
+
+#include <lib/file_system.h>
+
+#include <state_machine/state_machine.h>
+
+typedef struct {
+    uint64_t  term;
+    uint64_t  client_id;
+    Operation oper;
+} WALEntry;
+
+typedef struct {
+    int       count;
+    int       capacity;
+    WALEntry *entries;
+    Handle    handle;
+} WAL;
+
+typedef struct {
+    int count;
+    int current;
+    WALEntry *entries;
+} WALReplay;
+
+int       wal_init(WAL *wal, string file);
+void      wal_free(WAL *wal);
+int       wal_append(WAL *wal, WALEntry *entry);
+int       wal_truncate(WAL *wal, int new_count);
+uint64_t  wal_last_term(WAL *wal);
+int       wal_entry_count(WAL *wal);
+WALEntry *wal_peek_entry(WAL *wal, int idx);
+void      wal_replay_init(WALReplay *wal_replay, WAL *wal);
+void      wal_replay_free(WALReplay *wal_replay);
+WALEntry *wal_replay_next(WALReplay *wal_replay);
+
+#endif // WAL_INCLUDED