add failover support by zookeeper

config.go

@@ -36,6 +36,7 @@ type Config struct {
 	Log          string        `goconf:"base:log"`
 	MaxProc      int           `goconf:"base:maxproc"`
 	RPCBind      []string      `goconf:"base:rpc.bind:,"`
+	ThriftBind   []string      `goconf:"base:thrift.bind:,"`
 	StatBind     []string      `goconf:"base:stat.bind:,"`
 	PprofBind    []string      `goconf:"base:pprof.bind:,"`
 	DatacenterId int64         `goconf:"snowflake:datacenter"`
@@ -57,6 +58,7 @@ func InitConfig() (err error) {
 		Log:          "./log/xml",
 		MaxProc:      runtime.NumCPU(),
 		RPCBind:      []string{"localhost:8080"},
+		ThriftBind:   []string{"localhost:8081"},
 		DatacenterId: 0,
 		WorkerId:     []int64{0},
 		ZKAddr:       []string{"localhost:2181"},

gosnowflake-example.conf

@@ -47,6 +47,18 @@ pid /tmp/gosnowflake.pid
 # rpc.bind 127.0.0.1:8080
 # rpc.bind :8080
 
+# By default gosnowflake thrift listens for connections from all the network interfaces
+# available on the server on 8080 port. It is possible to listen to just one or 
+# multiple interfaces using the "rpc.bind" configuration directive, 
+# followed by one or more IP addresses and port.
+#
+# Examples:
+#
+# Note this directive is only support "thrift" protocol
+# thrift.bind 192.168.1.100:8080,10.0.0.1:8080
+# thrift.bind 127.0.0.1:8080
+# thrift.bind :8080
+
 # This is used by gosnowflake service profiling (pprof).
 # By default gosnowflake pprof listens for connections from local interfaces on 6971
 # port. It's not safty for listening internet IP addresses.