+
+func (db *DB) PTTL(key string) (time.Duration, error) {
+ result, err := db.client.PTTL(db.ctx, key).Result()
+ return result, err
+}
+
+func (db *DB) Info() (*DbInfo, error) {
+ var info DbInfo
+ resultStr, err := db.client.Info(db.ctx, "all").Result()
+ if err != nil {
+ return &info, err
+ }
+
+ result := strings.Split(strings.ReplaceAll(resultStr, "\r\n", "\n"), "\n")
+ readRedisInfoReplyFields(result, &info)
+ return &info, nil
+}
+
+func lineContains(line, substr string) bool {
+ return strings.Contains(line, substr)
+}
+
+func getFieldValueStr(line, substr string) string {
+ if idx := strings.Index(line, substr); idx != -1 {
+ return line[idx+len(substr):]
+ }
+ return ""
+}
+
+func getUint32FromString(s string) uint32 {
+ if val, err := strconv.ParseUint(s, 10, 32); err == nil {
+ return uint32(val)
+ }
+ return 0
+}
+
+func getUint64FromString(s string) uint64 {
+ if val, err := strconv.ParseUint(s, 10, 64); err == nil {
+ return uint64(val)
+ }
+ return 0
+}
+
+func getFloatFromString(s string, bitSize int) float64 {
+ if val, err := strconv.ParseFloat(s, bitSize); err == nil {
+ return val
+ }
+ return 0
+}
+
+func getFloat64FromString(s string) float64 {
+ return getFloatFromString(s, 64)
+}
+
+func getFloat32FromString(s string) float32 {
+ return float32(getFloatFromString(s, 32))
+}
+
+func getValueString(values string, key string) string {
+ slice := strings.Split(values, ",")
+ for _, s := range slice {
+ if lineContains(s, key) {
+ return getFieldValueStr(s, key)
+ }
+ }
+ return ""
+}
+
+func getCommandstatsValues(values string) (string, string, string) {
+ calls := getValueString(values, "calls=")
+ usec := getValueString(values, "usec=")
+ usecPerCall := getValueString(values, "usec_per_call=")
+ return calls, usec, usecPerCall
+}
+
+func updateCommandstatsValues(i interface{}, values string) {
+ stype := reflect.ValueOf(i).Elem()
+ callsStr, usecStr, usecPerCallStr := getCommandstatsValues(values)
+
+ callsField := stype.FieldByName("Calls")
+ callsField.Set(reflect.ValueOf(getUint32FromString(callsStr)))
+
+ usecField := stype.FieldByName("Usec")
+ usecField.Set(reflect.ValueOf(getUint32FromString(usecStr)))
+
+ usecPerCallField := stype.FieldByName("UsecPerCall")
+ usecPerCallField.Set(reflect.ValueOf(getFloat32FromString(usecPerCallStr)))
+}
+
+func getKeyspaceValues(values string) (string, string, string) {
+ keys := getValueString(values, "keys=")
+ expires := getValueString(values, "expires=")
+ avgttl := getValueString(values, "avg_ttl=")
+ return keys, expires, avgttl
+}
+
+func updateKeyspaceValues(i interface{}, values string) {
+ stype := reflect.ValueOf(i).Elem()
+ keysStr, expiresStr, avgttlStr := getKeyspaceValues(values)
+
+ keysField := stype.FieldByName("Keys")
+ keysField.Set(reflect.ValueOf(getUint32FromString(keysStr)))
+
+ expiresField := stype.FieldByName("Expires")
+ expiresField.Set(reflect.ValueOf(getUint32FromString(expiresStr)))
+
+ avgttlField := stype.FieldByName("AvgTtl")
+ avgttlField.Set(reflect.ValueOf(getUint32FromString(avgttlStr)))
+}
+
+func updateServerInfoFields(config ConfigInfo, info *DbInfo) {
+ if value, ok := config["uptime_in_days"]; ok {
+ info.Fields.Server.UptimeInDays = getUint32FromString(value)
+ }
+}
+
+func updateClientInfoFields(config ConfigInfo, info *DbInfo) {
+ if value, ok := config["connected_clients"]; ok {
+ info.Fields.Clients.ConnectedClients = getUint32FromString(value)
+ }
+ if value, ok := config["client_recent_max_input_buffer"]; ok {
+ info.Fields.Clients.ClientRecentMaxInputBuffer = getUint32FromString(value)
+ }
+ if value, ok := config["client_recent_max_output_buffer"]; ok {
+ info.Fields.Clients.ClientRecentMaxOutputBuffer = getUint32FromString(value)
+ }
+}
+
+func updateMemoryInfoFields(config ConfigInfo, info *DbInfo) {
+ if value, ok := config["used_memory"]; ok {
+ info.Fields.Memory.UsedMemory = getUint64FromString(value)
+ }
+ if value, ok := config["used_memory_human"]; ok {
+ info.Fields.Memory.UsedMemoryHuman = value
+ }
+ if value, ok := config["used_memory_rss"]; ok {
+ info.Fields.Memory.UsedMemoryRss = getUint64FromString(value)
+ }
+ if value, ok := config["used_memory_rss_human"]; ok {
+ info.Fields.Memory.UsedMemoryRssHuman = value
+ }
+ if value, ok := config["used_memory_peak"]; ok {
+ info.Fields.Memory.UsedMemoryPeak = getUint64FromString(value)
+ }
+ if value, ok := config["used_memory_peak_human"]; ok {
+ info.Fields.Memory.UsedMemoryPeakHuman = value
+ }
+ if value, ok := config["used_memory_peak_perc"]; ok {
+ info.Fields.Memory.UsedMemoryPeakPerc = value
+ }
+ if value, ok := config["mem_fragmentation_ratio"]; ok {
+ info.Fields.Memory.MemFragmentationRatio = getFloat32FromString(value)
+ }
+ if value, ok := config["mem_fragmentation_bytes"]; ok {
+ info.Fields.Memory.MemFragmentationBytes = getUint32FromString(value)
+ }
+}
+
+func updateStatsInfoFields(config ConfigInfo, info *DbInfo) {
+ if value, ok := config["total_connections_received"]; ok {
+ info.Fields.Stats.TotalConnectionsReceived = getUint32FromString(value)
+ }
+ if value, ok := config["total_commands_processed"]; ok {
+ info.Fields.Stats.TotalCommandsProcessed = getUint32FromString(value)
+ }
+ if value, ok := config["sync_full"]; ok {
+ info.Fields.Stats.SyncFull = getUint32FromString(value)
+ }
+ if value, ok := config["sync_partial_ok"]; ok {
+ info.Fields.Stats.SyncPartialOk = getUint32FromString(value)
+ }
+ if value, ok := config["sync_partial_err"]; ok {
+ info.Fields.Stats.SyncPartialErr = getUint32FromString(value)
+ }
+ if value, ok := config["pubsub_channels"]; ok {
+ info.Fields.Stats.PubsubChannels = getUint32FromString(value)
+ }
+}
+
+func updateCpuInfoFields(config ConfigInfo, info *DbInfo) {
+ if value, ok := config["used_cpu_sys"]; ok {
+ info.Fields.Cpu.UsedCpuSys = getFloat64FromString(value)
+ }
+ if value, ok := config["used_cpu_user"]; ok {
+ info.Fields.Cpu.UsedCpuUser = getFloat64FromString(value)
+ }
+}
+
+func updateCommandstatsInfoFields(config ConfigInfo, info *DbInfo) {
+ if values, ok := config["cmdstat_replconf"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatReplconf, values)
+ }
+ if values, ok := config["cmdstat_keys"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatKeys, values)
+ }
+ if values, ok := config["cmdstat_role"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatRole, values)
+ }
+ if values, ok := config["cmdstat_psync"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatPsync, values)
+ }
+ if values, ok := config["cmdstat_mset"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatMset, values)
+ }
+ if values, ok := config["cmdstat_publish"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatPublish, values)
+ }
+ if values, ok := config["cmdstat_info"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatInfo, values)
+ }
+ if values, ok := config["cmdstat_ping"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatPing, values)
+ }
+ if values, ok := config["cmdstat_client"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatClient, values)
+ }
+ if values, ok := config["cmdstat_command"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatCommand, values)
+ }
+ if values, ok := config["cmdstat_subscribe"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatSubscribe, values)
+ }
+ if values, ok := config["cmdstat_monitor"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatMonitor, values)
+ }
+ if values, ok := config["cmdstat_config"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatConfig, values)
+ }
+ if values, ok := config["cmdstat_slaveof"]; ok {
+ updateCommandstatsValues(&info.Fields.Commandstats.CmdstatSlaveof, values)
+ }
+}
+
+func updateKeyspaceInfoFields(config ConfigInfo, info *DbInfo) {
+ if values, ok := config["db0"]; ok {
+ updateKeyspaceValues(&info.Fields.Keyspace.Db, values)
+ }
+}
+
+func getConfigInfo(input []string) ConfigInfo {
+ config := ConfigInfo{}
+ for _, line := range input {
+ if i := strings.Index(line, ":"); i != -1 {
+ if key := strings.TrimSpace(line[:i]); len(key) > 0 {
+ if len(line) > i {
+ config[key] = strings.TrimSpace(line[i+1:])
+ }
+ }
+ }
+ }
+ return config
+}
+
+func readRedisInfoReplyFields(input []string, info *DbInfo) {
+ config := getConfigInfo(input)
+
+ if value, ok := config["role"]; ok {
+ if "master" == value {
+ info.Fields.PrimaryRole = true
+ }
+ }
+ if value, ok := config["connected_slaves"]; ok {
+ info.Fields.ConnectedReplicaCnt = getUint32FromString(value)
+ }
+ updateServerInfoFields(config, info)
+ updateClientInfoFields(config, info)
+ updateMemoryInfoFields(config, info)
+ updateStatsInfoFields(config, info)
+ updateCpuInfoFields(config, info)
+ updateCommandstatsInfoFields(config, info)
+ updateKeyspaceInfoFields(config, info)
+}
+
+func (db *DB) State() (*DbState, error) {
+ dbState := new(DbState)
+ if db.sentinelPort != "" {
+ //Establish connection to Redis sentinel. The reason why connection is done
+ //here instead of time of the SDL instance creation is that for the time being
+ //sentinel connection is needed only here to get state information and
+ //state information is needed only by 'sdlcli' hence it is not time critical
+ //and also we want to avoid opening unnecessary TCP connections towards Redis
+ //sentinel for every SDL instance. Now it is done only when 'sdlcli' is used.
+ sentinelClient := db.sentinel(db.addr, db.sentinelPort, db.masterName, db.nodeCnt)
+ return sentinelClient.GetDbState()
+ } else {
+ info, err := db.Info()
+ if err != nil {
+ dbState.PrimaryDbState.Err = err
+ return dbState, err
+ }
+ return db.fillDbStateFromDbInfo(info)
+ }
+}
+
+func (db *DB) fillDbStateFromDbInfo(info *DbInfo) (*DbState, error) {
+ var dbState DbState
+ if info.Fields.PrimaryRole == true {
+ dbState = DbState{
+ PrimaryDbState: PrimaryDbState{
+ Fields: PrimaryDbStateFields{
+ Role: "master",
+ Ip: db.addr,
+ Port: db.port,
+ Flags: "master",
+ },
+ },
+ }
+ }
+
+ cnt, err := strconv.Atoi(db.nodeCnt)
+ if err != nil {
+ dbState.Err = fmt.Errorf("DBAAS_NODE_COUNT configuration value '%s' conversion to integer failed", db.nodeCnt)
+ } else {
+ dbState.ConfigNodeCnt = cnt
+ }
+
+ return &dbState, dbState.Err
+}
+
+func createReplicaDbClient(host string) (*DB, error) {
+ addr, port, err := net.SplitHostPort(host)
+ if err != nil {
+ return nil, err
+ }
+ return createDbClient(addr, port, "", "", "", newRedisClient, subscribeNotifications, nil), err
+}
+
+func getStatisticsInfo(db *DB, host string) (*DbStatisticsInfo, error) {
+ var err error
+ dbStatisticsInfo := new(DbStatisticsInfo)
+ dbStatisticsInfo.IPAddr, dbStatisticsInfo.Port, err = net.SplitHostPort(host)
+ if err != nil {
+ return nil, err
+ }
+
+ info, err := db.Info()
+ if err != nil {
+ return nil, err
+ }
+ dbStatisticsInfo.Info = info
+
+ return dbStatisticsInfo, nil
+}
+
+func sentinelStatistics(db *DB) (*DbStatistics, error) {
+ dbState := new(DbState)
+ dbStatistics := new(DbStatistics)
+ dbStatisticsInfo := new(DbStatisticsInfo)
+ var err error
+
+ dbState, err = db.State()
+ if err != nil {
+ return nil, err
+ }
+
+ dbStatisticsInfo, err = getStatisticsInfo(db, dbState.PrimaryDbState.GetAddress())
+ dbStatistics.Stats = append(dbStatistics.Stats, dbStatisticsInfo)
+
+ if dbState.ReplicasDbState != nil {
+ for _, r := range dbState.ReplicasDbState.States {
+ replicaDb, err := createReplicaDbClient(r.GetAddress())
+ if err != nil {
+ return nil, err
+ }
+ dbStatisticsInfo, err = getStatisticsInfo(replicaDb, r.GetAddress())
+ if closeErr := replicaDb.CloseDB(); closeErr != nil {
+ return nil, closeErr
+ }
+ if err != nil {
+ return nil, err
+ }
+ dbStatistics.Stats = append(dbStatistics.Stats, dbStatisticsInfo)
+ }
+ }
+
+ return dbStatistics, nil
+}
+
+func standaloneStatistics(db *DB) (*DbStatistics, error) {
+ dbStatistics := new(DbStatistics)
+
+ dbStatisticsInfo, err := getStatisticsInfo(db, net.JoinHostPort(db.addr, db.port))
+ dbStatistics.Stats = append(dbStatistics.Stats, dbStatisticsInfo)
+
+ return dbStatistics, err
+}
+
+func (db *DB) Statistics() (*DbStatistics, error) {
+ if db.sentinelPort != "" {
+ return sentinelStatistics(db)
+ }
+
+ return standaloneStatistics(db)
+}
+
+var luaRefresh = redis.NewScript(`if redis.call("get", KEYS[1]) == ARGV[1] then return redis.call("pexpire", KEYS[1], ARGV[2]) else return 0 end`)
+
+func (db *DB) PExpireIE(key string, data interface{}, expiration time.Duration) error {
+ expirationStr := strconv.FormatInt(int64(expiration/time.Millisecond), 10)
+ result, err := luaRefresh.Run(db.ctx, db.client, []string{key}, data, expirationStr).Result()
+ if err != nil {
+ return err
+ }
+ if result == int64(1) {
+ return nil
+ }
+ return errors.New("Lock not held")
+}
+
+func (sCbMap *sharedCbMap) Add(channel string, cb ChannelNotificationCb) {
+ sCbMap.m.Lock()
+ defer sCbMap.m.Unlock()
+ sCbMap.cbMap[channel] = cb
+}
+
+func (sCbMap *sharedCbMap) Remove(channel string) {
+ sCbMap.m.Lock()
+ defer sCbMap.m.Unlock()
+ delete(sCbMap.cbMap, channel)
+}
+
+func (sCbMap *sharedCbMap) Count() int {
+ sCbMap.m.Lock()
+ defer sCbMap.m.Unlock()
+ return len(sCbMap.cbMap)
+}
+
+func (sCbMap *sharedCbMap) GetMapCopy() map[string]ChannelNotificationCb {
+ sCbMap.m.Lock()
+ defer sCbMap.m.Unlock()
+ mapCopy := make(map[string]ChannelNotificationCb, 0)
+ for i, v := range sCbMap.cbMap {
+ mapCopy[i] = v
+ }
+ return mapCopy
+}