+ sds name = sdsempty();
+ migrateCachedSocket *cs;
+
+ /* Check if we have an already cached socket for this ip:port pair. */
+ name = sdscatlen(name,host->ptr,sdslen(host->ptr));
+ name = sdscatlen(name,":",1);
+ name = sdscatlen(name,port->ptr,sdslen(port->ptr));
+ cs = dictFetchValue(server.migrate_cached_sockets,name);
+ if (cs) {
+ sdsfree(name);
+ cs->last_use_time = server.unixtime;
+ return cs->fd;
+ }
+
+ /* No cached socket, create one. */
+ if (dictSize(server.migrate_cached_sockets) == MIGRATE_SOCKET_CACHE_ITEMS) {
+ /* Too many items, drop one at random. */
+ dictEntry *de = dictGetRandomKey(server.migrate_cached_sockets);
+ cs = dictGetVal(de);
+ close(cs->fd);
+ zfree(cs);
+ dictDelete(server.migrate_cached_sockets,dictGetKey(de));
+ }
+
+ /* Create the socket */
+ fd = anetTcpNonBlockConnect(server.neterr,c->argv[1]->ptr,
+ atoi(c->argv[2]->ptr));
+ if (fd == -1) {
+ sdsfree(name);
+ addReplyErrorFormat(c,"Can't connect to target node: %s",
+ server.neterr);
+ return -1;
+ }
+ anetTcpNoDelay(server.neterr,fd);
+
+ /* Check if it connects within the specified timeout. */
+ if ((aeWait(fd,AE_WRITABLE,timeout) & AE_WRITABLE) == 0) {
+ sdsfree(name);
+ addReplySds(c,sdsnew("-IOERR error or timeout connecting to the client\r\n"));
+ close(fd);
+ return -1;
+ }
+
+ /* Add to the cache and return it to the caller. */
+ cs = zmalloc(sizeof(*cs));
+ cs->fd = fd;
+ cs->last_use_time = server.unixtime;
+ dictAdd(server.migrate_cached_sockets,name,cs);
+ return fd;
+}
+
+/* Free a migrate cached connection. */
+void migrateCloseSocket(robj *host, robj *port) {
+ sds name = sdsempty();
+ migrateCachedSocket *cs;
+
+ name = sdscatlen(name,host->ptr,sdslen(host->ptr));
+ name = sdscatlen(name,":",1);
+ name = sdscatlen(name,port->ptr,sdslen(port->ptr));
+ cs = dictFetchValue(server.migrate_cached_sockets,name);
+ if (!cs) {
+ sdsfree(name);
+ return;
+ }
+
+ close(cs->fd);
+ zfree(cs);
+ dictDelete(server.migrate_cached_sockets,name);
+ sdsfree(name);
+}
+
+void migrateCloseTimedoutSockets(void) {
+ dictIterator *di = dictGetSafeIterator(server.migrate_cached_sockets);
+ dictEntry *de;
+
+ while((de = dictNext(di)) != NULL) {
+ migrateCachedSocket *cs = dictGetVal(de);
+
+ if ((server.unixtime - cs->last_use_time) > MIGRATE_SOCKET_CACHE_TTL) {
+ close(cs->fd);
+ zfree(cs);
+ dictDelete(server.migrate_cached_sockets,dictGetKey(de));
+ }
+ }
+ dictReleaseIterator(di);
+}
+
+/* MIGRATE host port key dbid timeout [COPY | REPLACE] */
+void migrateCommand(redisClient *c) {
+ int fd, copy, replace, j;
projects / redis.git / blobdiff