101 lines
2.8 KiB
Go
101 lines
2.8 KiB
Go
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// Copyright © 2016 Abcum Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tcp
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import (
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"time"
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"io/ioutil"
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"github.com/abcum/surreal/cnf"
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"github.com/abcum/surreal/log"
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"github.com/hashicorp/serf/serf"
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)
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var srf *serf.Serf
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// Setup sets up the server for remote connections
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func Setup(opts *cnf.Options) (err error) {
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log.WithPrefix("tcp").Infof("Starting tcp server on %s", opts.Conn.Tcp)
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chn := make(chan serf.Event)
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cfg := serf.DefaultConfig()
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cfg.EventCh = chn
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cfg.NodeName = opts.Node.UUID
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cfg.LogOutput = ioutil.Discard
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cfg.ReconnectTimeout = 60 * time.Second
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cfg.TombstoneTimeout = 60 * time.Second
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cfg.MemberlistConfig.LogOutput = ioutil.Discard
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cfg.MemberlistConfig.BindPort = opts.Port.Tcp
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cfg.MemberlistConfig.AdvertisePort = opts.Port.Tcp
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srf, err = serf.Create(cfg)
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if len(opts.Cluster.Peer) > 0 {
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if _, err := srf.Join(opts.Cluster.Peer, true); err != nil {
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log.Infoln(err)
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}
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}
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go func() {
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for evt := range chn {
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switch evt.EventType() {
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case serf.EventMemberReap:
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msg := evt.(serf.MemberEvent)
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for _, member := range msg.Members {
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log.WithPrefix("tcp").Debugf("Cluster member reaped: %s:%d", member.Addr, member.Port)
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}
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case serf.EventMemberJoin:
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msg := evt.(serf.MemberEvent)
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for _, member := range msg.Members {
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log.WithPrefix("tcp").Debugf("Cluster member joined: %s:%d", member.Addr, member.Port)
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}
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case serf.EventMemberLeave:
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msg := evt.(serf.MemberEvent)
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for _, member := range msg.Members {
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log.WithPrefix("tcp").Debugf("Cluster member exited: %s:%d", member.Addr, member.Port)
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}
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case serf.EventMemberFailed:
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msg := evt.(serf.MemberEvent)
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for _, member := range msg.Members {
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log.WithPrefix("tcp").Debugf("Cluster member failed: %s:%d", member.Addr, member.Port)
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}
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case serf.EventUser:
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msg := evt.(serf.UserEvent)
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log.WithPrefix("tcp").Debugf("Received user event: %v with payload %s", msg.Name, msg.Payload)
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case serf.EventQuery:
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msg := evt.(*serf.Query)
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log.WithPrefix("tcp").Debugf("Received query event: %v with payload %s", msg.Name, msg.Payload)
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}
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}
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}()
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return
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}
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func Send(name string, data []byte) {
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srf.UserEvent(name, data, false)
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}
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// Exit tears down the server gracefully
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func Exit() {
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log.WithPrefix("tcp").Infof("Gracefully shutting down %s protocol", "tcp")
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srf.Leave()
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}
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