server: add a new ctdb control CTDB_TRANS2_ACTIVE

[sahlberg/ctdb.git] / server / ctdb_persistent.c

diff --git a/server/ctdb_persistent.c b/server/ctdb_persistent.c
index cb77bf092d107c9763686f49176487c7a844cf74..3c51742b1c2b14e9cb2c13b6f6c34c463c1244d4 100644 (file)
--- a/server/ctdb_persistent.c
+++ b/server/ctdb_persistent.c
@@ -604,6 +604,26 @@ int32_t ctdb_control_trans2_error(struct ctdb_context *ctdb,
        return 0;
 }
 
+/**
+ * Tell whether a transaction is active on this node on the give DB.
+ */
+int32_t ctdb_control_trans2_active(struct ctdb_context *ctdb,
+                                  uint32_t db_id)
+{
+       struct ctdb_db_context *ctdb_db;
+
+       ctdb_db = find_ctdb_db(ctdb, db_id);
+       if (!ctdb_db) {
+               DEBUG(DEBUG_ERR,(__location__ " Unknown db 0x%08x\n", db_id));
+               return -1;
+       }
+
+       if (ctdb_db->transaction_active) {
+               return 1;
+       } else {
+               return 0;
+       }
+}
 
 /*
   backwards compatibility: