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server: move the code for the update_record control to its own file
It is very misleading in ctdb_persistent.c, since it is used for non-persistent dbs... (This used to be ctdb commit a956fa3a27106d0154a3fb46987d61c0a6b7c768)
This commit is contained in:
Michael Adam
parent
46244f0d50
commit
55abb07f51
@ -75,6 +75,7 @@ CTDB_SERVER_OBJ = server/ctdbd.o server/ctdb_daemon.o server/ctdb_lockwait.o \
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server/ctdb_serverids.o server/ctdb_persistent.o \
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server/ctdb_serverids.o server/ctdb_persistent.o \
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server/ctdb_keepalive.o server/ctdb_logging.o server/ctdb_uptime.o \
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server/ctdb_keepalive.o server/ctdb_logging.o server/ctdb_uptime.o \
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server/ctdb_vacuum.o server/ctdb_banning.o server/ctdb_statistics.o \
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server/ctdb_vacuum.o server/ctdb_banning.o server/ctdb_statistics.o \
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server/ctdb_update_record.o \
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$(CTDB_CLIENT_OBJ) $(CTDB_TCP_OBJ) @INFINIBAND_WRAPPER_OBJ@
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$(CTDB_CLIENT_OBJ) $(CTDB_TCP_OBJ) @INFINIBAND_WRAPPER_OBJ@
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TEST_BINS=tests/bin/ctdb_bench tests/bin/ctdb_fetch tests/bin/ctdb_fetch_one \
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TEST_BINS=tests/bin/ctdb_bench tests/bin/ctdb_fetch tests/bin/ctdb_fetch_one \
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@ -432,315 +432,6 @@ int32_t ctdb_control_trans3_commit(struct ctdb_context *ctdb,
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}
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}
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struct ctdb_persistent_write_state {
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struct ctdb_db_context *ctdb_db;
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struct ctdb_marshall_buffer *m;
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struct ctdb_req_control *c;
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};
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/*
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called from a child process to write the data
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*/
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static int ctdb_persistent_store(struct ctdb_persistent_write_state *state)
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{
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int ret, i;
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struct ctdb_rec_data *rec = NULL;
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struct ctdb_marshall_buffer *m = state->m;
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ret = tdb_transaction_start(state->ctdb_db->ltdb->tdb);
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if (ret == -1) {
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DEBUG(DEBUG_ERR,("Failed to start transaction for db_id 0x%08x in ctdb_persistent_store\n",
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state->ctdb_db->db_id));
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return -1;
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}
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for (i=0;i<m->count;i++) {
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struct ctdb_ltdb_header oldheader;
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struct ctdb_ltdb_header header;
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TDB_DATA key, data, olddata;
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TALLOC_CTX *tmp_ctx = talloc_new(state);
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rec = ctdb_marshall_loop_next(m, rec, NULL, &header, &key, &data);
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if (rec == NULL) {
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DEBUG(DEBUG_ERR,("Failed to get next record %d for db_id 0x%08x in ctdb_persistent_store\n",
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i, state->ctdb_db->db_id));
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talloc_free(tmp_ctx);
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goto failed;
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}
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/* fetch the old header and ensure the rsn is less than the new rsn */
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ret = ctdb_ltdb_fetch(state->ctdb_db, key, &oldheader, tmp_ctx, &olddata);
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if (ret != 0) {
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DEBUG(DEBUG_ERR,("Failed to fetch old record for db_id 0x%08x in ctdb_persistent_store\n",
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state->ctdb_db->db_id));
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talloc_free(tmp_ctx);
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goto failed;
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}
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if (oldheader.rsn >= header.rsn &&
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(olddata.dsize != data.dsize ||
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memcmp(olddata.dptr, data.dptr, data.dsize) != 0)) {
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DEBUG(DEBUG_CRIT,("existing header for db_id 0x%08x has larger RSN %llu than new RSN %llu in ctdb_persistent_store\n",
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state->ctdb_db->db_id,
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(unsigned long long)oldheader.rsn, (unsigned long long)header.rsn));
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talloc_free(tmp_ctx);
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goto failed;
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}
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talloc_free(tmp_ctx);
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ret = ctdb_ltdb_store(state->ctdb_db, key, &header, data);
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if (ret != 0) {
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DEBUG(DEBUG_CRIT,("Failed to store record for db_id 0x%08x in ctdb_persistent_store\n",
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state->ctdb_db->db_id));
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goto failed;
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}
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}
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ret = tdb_transaction_commit(state->ctdb_db->ltdb->tdb);
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if (ret == -1) {
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DEBUG(DEBUG_ERR,("Failed to commit transaction for db_id 0x%08x in ctdb_persistent_store\n",
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state->ctdb_db->db_id));
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return -1;
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}
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return 0;
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failed:
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tdb_transaction_cancel(state->ctdb_db->ltdb->tdb);
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return -1;
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}
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/*
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called when we the child has completed the persistent write
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on our behalf
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*/
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static void ctdb_persistent_write_callback(int status, void *private_data)
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{
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struct ctdb_persistent_write_state *state = talloc_get_type(private_data,
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struct ctdb_persistent_write_state);
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ctdb_request_control_reply(state->ctdb_db->ctdb, state->c, NULL, status, NULL);
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talloc_free(state);
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}
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/*
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called if our lockwait child times out
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*/
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static void ctdb_persistent_lock_timeout(struct event_context *ev, struct timed_event *te,
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struct timeval t, void *private_data)
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{
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struct ctdb_persistent_write_state *state = talloc_get_type(private_data,
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struct ctdb_persistent_write_state);
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ctdb_request_control_reply(state->ctdb_db->ctdb, state->c, NULL, -1, "timeout in ctdb_persistent_lock");
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talloc_free(state);
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}
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struct childwrite_handle {
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struct ctdb_context *ctdb;
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struct ctdb_db_context *ctdb_db;
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struct fd_event *fde;
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int fd[2];
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pid_t child;
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void *private_data;
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void (*callback)(int, void *);
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struct timeval start_time;
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};
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static int childwrite_destructor(struct childwrite_handle *h)
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{
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CTDB_DECREMENT_STAT(h->ctdb, pending_childwrite_calls);
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kill(h->child, SIGKILL);
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return 0;
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}
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/* called when the child process has finished writing the record to the
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database
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*/
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static void childwrite_handler(struct event_context *ev, struct fd_event *fde,
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uint16_t flags, void *private_data)
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{
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struct childwrite_handle *h = talloc_get_type(private_data,
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struct childwrite_handle);
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void *p = h->private_data;
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void (*callback)(int, void *) = h->callback;
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pid_t child = h->child;
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TALLOC_CTX *tmp_ctx = talloc_new(ev);
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int ret;
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char c;
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CTDB_UPDATE_LATENCY(h->ctdb, h->ctdb_db, "persistent", childwrite_latency, h->start_time);
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CTDB_DECREMENT_STAT(h->ctdb, pending_childwrite_calls);
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/* the handle needs to go away when the context is gone - when
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the handle goes away this implicitly closes the pipe, which
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kills the child */
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talloc_steal(tmp_ctx, h);
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talloc_set_destructor(h, NULL);
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ret = read(h->fd[0], &c, 1);
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if (ret < 1) {
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DEBUG(DEBUG_ERR, (__location__ " Read returned %d. Childwrite failed\n", ret));
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c = 1;
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}
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callback(c, p);
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kill(child, SIGKILL);
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talloc_free(tmp_ctx);
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}
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/* this creates a child process which will take out a tdb transaction
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and write the record to the database.
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*/
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struct childwrite_handle *ctdb_childwrite(struct ctdb_db_context *ctdb_db,
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void (*callback)(int, void *private_data),
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struct ctdb_persistent_write_state *state)
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{
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struct childwrite_handle *result;
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int ret;
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pid_t parent = getpid();
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CTDB_INCREMENT_STAT(ctdb_db->ctdb, childwrite_calls);
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CTDB_INCREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
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if (!(result = talloc_zero(state, struct childwrite_handle))) {
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CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
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return NULL;
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}
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ret = pipe(result->fd);
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if (ret != 0) {
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talloc_free(result);
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CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
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return NULL;
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}
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result->child = ctdb_fork(ctdb_db->ctdb);
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if (result->child == (pid_t)-1) {
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close(result->fd[0]);
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close(result->fd[1]);
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talloc_free(result);
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CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
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return NULL;
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}
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result->callback = callback;
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result->private_data = state;
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result->ctdb = ctdb_db->ctdb;
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result->ctdb_db = ctdb_db;
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if (result->child == 0) {
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char c = 0;
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close(result->fd[0]);
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debug_extra = talloc_asprintf(NULL, "childwrite-%s:", ctdb_db->db_name);
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ret = ctdb_persistent_store(state);
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if (ret != 0) {
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DEBUG(DEBUG_ERR, (__location__ " Failed to write persistent data\n"));
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c = 1;
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}
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write(result->fd[1], &c, 1);
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/* make sure we die when our parent dies */
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while (kill(parent, 0) == 0 || errno != ESRCH) {
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sleep(5);
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}
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_exit(0);
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}
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close(result->fd[1]);
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set_close_on_exec(result->fd[0]);
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talloc_set_destructor(result, childwrite_destructor);
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DEBUG(DEBUG_DEBUG, (__location__ " Created PIPE FD:%d for ctdb_childwrite\n", result->fd[0]));
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result->fde = event_add_fd(ctdb_db->ctdb->ev, result, result->fd[0],
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EVENT_FD_READ, childwrite_handler,
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(void *)result);
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if (result->fde == NULL) {
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talloc_free(result);
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CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
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return NULL;
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}
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tevent_fd_set_auto_close(result->fde);
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result->start_time = timeval_current();
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return result;
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}
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/*
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update a record on this node if the new record has a higher rsn than the
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current record
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*/
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int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
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struct ctdb_req_control *c, TDB_DATA recdata,
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bool *async_reply)
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{
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struct ctdb_db_context *ctdb_db;
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struct ctdb_persistent_write_state *state;
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struct childwrite_handle *handle;
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struct ctdb_marshall_buffer *m = (struct ctdb_marshall_buffer *)recdata.dptr;
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if (ctdb->recovery_mode != CTDB_RECOVERY_NORMAL) {
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DEBUG(DEBUG_INFO,("rejecting ctdb_control_update_record when recovery active\n"));
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return -1;
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}
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ctdb_db = find_ctdb_db(ctdb, m->db_id);
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if (ctdb_db == NULL) {
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DEBUG(DEBUG_ERR,("Unknown database 0x%08x in ctdb_control_update_record\n", m->db_id));
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return -1;
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}
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if (ctdb_db->unhealthy_reason) {
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DEBUG(DEBUG_ERR,("db(%s) unhealty in ctdb_control_update_record: %s\n",
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ctdb_db->db_name, ctdb_db->unhealthy_reason));
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return -1;
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}
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state = talloc(ctdb, struct ctdb_persistent_write_state);
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CTDB_NO_MEMORY(ctdb, state);
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state->ctdb_db = ctdb_db;
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state->c = c;
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state->m = m;
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/* create a child process to take out a transaction and
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write the data.
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*/
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handle = ctdb_childwrite(ctdb_db, ctdb_persistent_write_callback, state);
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if (handle == NULL) {
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DEBUG(DEBUG_ERR,("Failed to setup childwrite handler in ctdb_control_update_record\n"));
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talloc_free(state);
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return -1;
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}
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/* we need to wait for the replies */
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*async_reply = true;
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/* need to keep the control structure around */
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talloc_steal(state, c);
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/* but we won't wait forever */
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event_add_timed(ctdb->ev, state, timeval_current_ofs(ctdb->tunable.control_timeout, 0),
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ctdb_persistent_lock_timeout, state);
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return 0;
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}
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/*
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/*
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called when a client has finished a local commit in a transaction to
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called when a client has finished a local commit in a transaction to
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a persistent database
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a persistent database
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334
ctdb/server/ctdb_update_record.c
Normal file
334
ctdb/server/ctdb_update_record.c
Normal file
@ -0,0 +1,334 @@
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/*
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implementation of the update record control
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Copyright (C) Andrew Tridgell 2007
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Copyright (C) Ronnie Sahlberg 2007
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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||||||
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "lib/tevent/tevent.h"
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#include "db_wrap.h"
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#include "lib/tdb/include/tdb.h"
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#include "ctdb_private.h"
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struct ctdb_persistent_write_state {
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struct ctdb_db_context *ctdb_db;
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struct ctdb_marshall_buffer *m;
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struct ctdb_req_control *c;
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};
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/*
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||||||
|
called from a child process to write the data
|
||||||
|
*/
|
||||||
|
static int ctdb_persistent_store(struct ctdb_persistent_write_state *state)
|
||||||
|
{
|
||||||
|
int ret, i;
|
||||||
|
struct ctdb_rec_data *rec = NULL;
|
||||||
|
struct ctdb_marshall_buffer *m = state->m;
|
||||||
|
|
||||||
|
ret = tdb_transaction_start(state->ctdb_db->ltdb->tdb);
|
||||||
|
if (ret == -1) {
|
||||||
|
DEBUG(DEBUG_ERR,("Failed to start transaction for db_id 0x%08x in ctdb_persistent_store\n",
|
||||||
|
state->ctdb_db->db_id));
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
for (i=0;i<m->count;i++) {
|
||||||
|
struct ctdb_ltdb_header oldheader;
|
||||||
|
struct ctdb_ltdb_header header;
|
||||||
|
TDB_DATA key, data, olddata;
|
||||||
|
TALLOC_CTX *tmp_ctx = talloc_new(state);
|
||||||
|
|
||||||
|
rec = ctdb_marshall_loop_next(m, rec, NULL, &header, &key, &data);
|
||||||
|
|
||||||
|
if (rec == NULL) {
|
||||||
|
DEBUG(DEBUG_ERR,("Failed to get next record %d for db_id 0x%08x in ctdb_persistent_store\n",
|
||||||
|
i, state->ctdb_db->db_id));
|
||||||
|
talloc_free(tmp_ctx);
|
||||||
|
goto failed;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* fetch the old header and ensure the rsn is less than the new rsn */
|
||||||
|
ret = ctdb_ltdb_fetch(state->ctdb_db, key, &oldheader, tmp_ctx, &olddata);
|
||||||
|
if (ret != 0) {
|
||||||
|
DEBUG(DEBUG_ERR,("Failed to fetch old record for db_id 0x%08x in ctdb_persistent_store\n",
|
||||||
|
state->ctdb_db->db_id));
|
||||||
|
talloc_free(tmp_ctx);
|
||||||
|
goto failed;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (oldheader.rsn >= header.rsn &&
|
||||||
|
(olddata.dsize != data.dsize ||
|
||||||
|
memcmp(olddata.dptr, data.dptr, data.dsize) != 0)) {
|
||||||
|
DEBUG(DEBUG_CRIT,("existing header for db_id 0x%08x has larger RSN %llu than new RSN %llu in ctdb_persistent_store\n",
|
||||||
|
state->ctdb_db->db_id,
|
||||||
|
(unsigned long long)oldheader.rsn, (unsigned long long)header.rsn));
|
||||||
|
talloc_free(tmp_ctx);
|
||||||
|
goto failed;
|
||||||
|
}
|
||||||
|
|
||||||
|
talloc_free(tmp_ctx);
|
||||||
|
|
||||||
|
ret = ctdb_ltdb_store(state->ctdb_db, key, &header, data);
|
||||||
|
if (ret != 0) {
|
||||||
|
DEBUG(DEBUG_CRIT,("Failed to store record for db_id 0x%08x in ctdb_persistent_store\n",
|
||||||
|
state->ctdb_db->db_id));
|
||||||
|
goto failed;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = tdb_transaction_commit(state->ctdb_db->ltdb->tdb);
|
||||||
|
if (ret == -1) {
|
||||||
|
DEBUG(DEBUG_ERR,("Failed to commit transaction for db_id 0x%08x in ctdb_persistent_store\n",
|
||||||
|
state->ctdb_db->db_id));
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
failed:
|
||||||
|
tdb_transaction_cancel(state->ctdb_db->ltdb->tdb);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
called when we the child has completed the persistent write
|
||||||
|
on our behalf
|
||||||
|
*/
|
||||||
|
static void ctdb_persistent_write_callback(int status, void *private_data)
|
||||||
|
{
|
||||||
|
struct ctdb_persistent_write_state *state = talloc_get_type(private_data,
|
||||||
|
struct ctdb_persistent_write_state);
|
||||||
|
|
||||||
|
|
||||||
|
ctdb_request_control_reply(state->ctdb_db->ctdb, state->c, NULL, status, NULL);
|
||||||
|
|
||||||
|
talloc_free(state);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
called if our lockwait child times out
|
||||||
|
*/
|
||||||
|
static void ctdb_persistent_lock_timeout(struct event_context *ev, struct timed_event *te,
|
||||||
|
struct timeval t, void *private_data)
|
||||||
|
{
|
||||||
|
struct ctdb_persistent_write_state *state = talloc_get_type(private_data,
|
||||||
|
struct ctdb_persistent_write_state);
|
||||||
|
ctdb_request_control_reply(state->ctdb_db->ctdb, state->c, NULL, -1, "timeout in ctdb_persistent_lock");
|
||||||
|
talloc_free(state);
|
||||||
|
}
|
||||||
|
|
||||||
|
struct childwrite_handle {
|
||||||
|
struct ctdb_context *ctdb;
|
||||||
|
struct ctdb_db_context *ctdb_db;
|
||||||
|
struct fd_event *fde;
|
||||||
|
int fd[2];
|
||||||
|
pid_t child;
|
||||||
|
void *private_data;
|
||||||
|
void (*callback)(int, void *);
|
||||||
|
struct timeval start_time;
|
||||||
|
};
|
||||||
|
|
||||||
|
static int childwrite_destructor(struct childwrite_handle *h)
|
||||||
|
{
|
||||||
|
CTDB_DECREMENT_STAT(h->ctdb, pending_childwrite_calls);
|
||||||
|
kill(h->child, SIGKILL);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* called when the child process has finished writing the record to the
|
||||||
|
database
|
||||||
|
*/
|
||||||
|
static void childwrite_handler(struct event_context *ev, struct fd_event *fde,
|
||||||
|
uint16_t flags, void *private_data)
|
||||||
|
{
|
||||||
|
struct childwrite_handle *h = talloc_get_type(private_data,
|
||||||
|
struct childwrite_handle);
|
||||||
|
void *p = h->private_data;
|
||||||
|
void (*callback)(int, void *) = h->callback;
|
||||||
|
pid_t child = h->child;
|
||||||
|
TALLOC_CTX *tmp_ctx = talloc_new(ev);
|
||||||
|
int ret;
|
||||||
|
char c;
|
||||||
|
|
||||||
|
CTDB_UPDATE_LATENCY(h->ctdb, h->ctdb_db, "persistent", childwrite_latency, h->start_time);
|
||||||
|
CTDB_DECREMENT_STAT(h->ctdb, pending_childwrite_calls);
|
||||||
|
|
||||||
|
/* the handle needs to go away when the context is gone - when
|
||||||
|
the handle goes away this implicitly closes the pipe, which
|
||||||
|
kills the child */
|
||||||
|
talloc_steal(tmp_ctx, h);
|
||||||
|
|
||||||
|
talloc_set_destructor(h, NULL);
|
||||||
|
|
||||||
|
ret = read(h->fd[0], &c, 1);
|
||||||
|
if (ret < 1) {
|
||||||
|
DEBUG(DEBUG_ERR, (__location__ " Read returned %d. Childwrite failed\n", ret));
|
||||||
|
c = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
callback(c, p);
|
||||||
|
|
||||||
|
kill(child, SIGKILL);
|
||||||
|
talloc_free(tmp_ctx);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* this creates a child process which will take out a tdb transaction
|
||||||
|
and write the record to the database.
|
||||||
|
*/
|
||||||
|
struct childwrite_handle *ctdb_childwrite(struct ctdb_db_context *ctdb_db,
|
||||||
|
void (*callback)(int, void *private_data),
|
||||||
|
struct ctdb_persistent_write_state *state)
|
||||||
|
{
|
||||||
|
struct childwrite_handle *result;
|
||||||
|
int ret;
|
||||||
|
pid_t parent = getpid();
|
||||||
|
|
||||||
|
CTDB_INCREMENT_STAT(ctdb_db->ctdb, childwrite_calls);
|
||||||
|
CTDB_INCREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
|
||||||
|
|
||||||
|
if (!(result = talloc_zero(state, struct childwrite_handle))) {
|
||||||
|
CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = pipe(result->fd);
|
||||||
|
|
||||||
|
if (ret != 0) {
|
||||||
|
talloc_free(result);
|
||||||
|
CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
result->child = ctdb_fork(ctdb_db->ctdb);
|
||||||
|
|
||||||
|
if (result->child == (pid_t)-1) {
|
||||||
|
close(result->fd[0]);
|
||||||
|
close(result->fd[1]);
|
||||||
|
talloc_free(result);
|
||||||
|
CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
result->callback = callback;
|
||||||
|
result->private_data = state;
|
||||||
|
result->ctdb = ctdb_db->ctdb;
|
||||||
|
result->ctdb_db = ctdb_db;
|
||||||
|
|
||||||
|
if (result->child == 0) {
|
||||||
|
char c = 0;
|
||||||
|
|
||||||
|
close(result->fd[0]);
|
||||||
|
debug_extra = talloc_asprintf(NULL, "childwrite-%s:", ctdb_db->db_name);
|
||||||
|
ret = ctdb_persistent_store(state);
|
||||||
|
if (ret != 0) {
|
||||||
|
DEBUG(DEBUG_ERR, (__location__ " Failed to write persistent data\n"));
|
||||||
|
c = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
write(result->fd[1], &c, 1);
|
||||||
|
|
||||||
|
/* make sure we die when our parent dies */
|
||||||
|
while (kill(parent, 0) == 0 || errno != ESRCH) {
|
||||||
|
sleep(5);
|
||||||
|
}
|
||||||
|
_exit(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
close(result->fd[1]);
|
||||||
|
set_close_on_exec(result->fd[0]);
|
||||||
|
|
||||||
|
talloc_set_destructor(result, childwrite_destructor);
|
||||||
|
|
||||||
|
DEBUG(DEBUG_DEBUG, (__location__ " Created PIPE FD:%d for ctdb_childwrite\n", result->fd[0]));
|
||||||
|
|
||||||
|
result->fde = event_add_fd(ctdb_db->ctdb->ev, result, result->fd[0],
|
||||||
|
EVENT_FD_READ, childwrite_handler,
|
||||||
|
(void *)result);
|
||||||
|
if (result->fde == NULL) {
|
||||||
|
talloc_free(result);
|
||||||
|
CTDB_DECREMENT_STAT(ctdb_db->ctdb, pending_childwrite_calls);
|
||||||
|
return NULL;
|
||||||
|
}
|
||||||
|
tevent_fd_set_auto_close(result->fde);
|
||||||
|
|
||||||
|
result->start_time = timeval_current();
|
||||||
|
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
update a record on this node if the new record has a higher rsn than the
|
||||||
|
current record
|
||||||
|
*/
|
||||||
|
int32_t ctdb_control_update_record(struct ctdb_context *ctdb,
|
||||||
|
struct ctdb_req_control *c, TDB_DATA recdata,
|
||||||
|
bool *async_reply)
|
||||||
|
{
|
||||||
|
struct ctdb_db_context *ctdb_db;
|
||||||
|
struct ctdb_persistent_write_state *state;
|
||||||
|
struct childwrite_handle *handle;
|
||||||
|
struct ctdb_marshall_buffer *m = (struct ctdb_marshall_buffer *)recdata.dptr;
|
||||||
|
|
||||||
|
if (ctdb->recovery_mode != CTDB_RECOVERY_NORMAL) {
|
||||||
|
DEBUG(DEBUG_INFO,("rejecting ctdb_control_update_record when recovery active\n"));
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
ctdb_db = find_ctdb_db(ctdb, m->db_id);
|
||||||
|
if (ctdb_db == NULL) {
|
||||||
|
DEBUG(DEBUG_ERR,("Unknown database 0x%08x in ctdb_control_update_record\n", m->db_id));
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (ctdb_db->unhealthy_reason) {
|
||||||
|
DEBUG(DEBUG_ERR,("db(%s) unhealty in ctdb_control_update_record: %s\n",
|
||||||
|
ctdb_db->db_name, ctdb_db->unhealthy_reason));
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
state = talloc(ctdb, struct ctdb_persistent_write_state);
|
||||||
|
CTDB_NO_MEMORY(ctdb, state);
|
||||||
|
|
||||||
|
state->ctdb_db = ctdb_db;
|
||||||
|
state->c = c;
|
||||||
|
state->m = m;
|
||||||
|
|
||||||
|
/* create a child process to take out a transaction and
|
||||||
|
write the data.
|
||||||
|
*/
|
||||||
|
handle = ctdb_childwrite(ctdb_db, ctdb_persistent_write_callback, state);
|
||||||
|
if (handle == NULL) {
|
||||||
|
DEBUG(DEBUG_ERR,("Failed to setup childwrite handler in ctdb_control_update_record\n"));
|
||||||
|
talloc_free(state);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* we need to wait for the replies */
|
||||||
|
*async_reply = true;
|
||||||
|
|
||||||
|
/* need to keep the control structure around */
|
||||||
|
talloc_steal(state, c);
|
||||||
|
|
||||||
|
/* but we won't wait forever */
|
||||||
|
event_add_timed(ctdb->ev, state, timeval_current_ofs(ctdb->tunable.control_timeout, 0),
|
||||||
|
ctdb_persistent_lock_timeout, state);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
@ -79,6 +79,7 @@ void ctdb_load_nodes_file(struct ctdb_context *ctdb) {}
|
|||||||
#include "server/ctdb_vacuum.c"
|
#include "server/ctdb_vacuum.c"
|
||||||
#include "server/ctdb_banning.c"
|
#include "server/ctdb_banning.c"
|
||||||
#include "server/ctdb_statistics.c"
|
#include "server/ctdb_statistics.c"
|
||||||
|
#include "server/ctdb_update_record.c"
|
||||||
|
|
||||||
/* CTDB_CLIENT_OBJ */
|
/* CTDB_CLIENT_OBJ */
|
||||||
#include "client/ctdb_client.c"
|
#include "client/ctdb_client.c"
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user