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wechaty-puppet-service

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/** * Wechaty Open Source Software - https://github.com/wechaty * * @copyright 2016 Huan LI (李卓桓) <https://github.com/huan>, and * Wechaty Contributors <https://github.com/wechaty>. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ import { puppet as grpcPuppet, } from 'wechaty-grpc'; import * as PUPPET from 'wechaty-puppet'; import { log } from '../config.js'; import { EventTypeRev, } from '../event-type-rev.js'; class EventStreamManager { puppet; eventStream; puppetListening = false; constructor(puppet) { this.puppet = puppet; log.verbose('EventStreamManager', 'constructor(%s)', puppet); } busy() { return !!this.eventStream; } start(stream) { log.verbose('EventStreamManager', 'start(stream)'); if (this.eventStream) { throw new Error('can not set twice'); } this.eventStream = stream; const removeAllListeners = this.connectPuppetEventToStreamingCall(); this.onStreamingCallEnd(removeAllListeners); /** * Huan(202108): * We emit a hearbeat at the beginning of the connect * to identicate that the connection is successeed. * * Our client (wechaty-puppet-service client) will wait for the heartbeat * when it connect to the server. * * If the server does not send the heartbeat, * then the client will wait for a 5 seconds timeout * for compatible the community gRPC puppet service providers like paimon. */ const connectSuccessHeartbeatPayload = { data: 'Wechaty Puppet gRPC stream connect successfully', }; this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_HEARTBEAT, connectSuccessHeartbeatPayload); /** * We emit the login event if current the puppet is logged in. */ if (this.puppet.isLoggedIn) { log.verbose('EventStreamManager', 'start() puppet is logged in, emit a login event for downstream'); const payload = { contactId: this.puppet.currentUserId, }; this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_LOGIN, payload); } if (this.puppet.readyIndicator.value()) { log.verbose('EventStreamManager', 'start() puppet is ready, emit a ready event for downstream'); const payload = { data: 'ready', }; this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_READY, payload); } } stop() { log.verbose('EventStreamManager', 'stop()'); if (!this.eventStream) { throw new Error('no this.eventStream'); } this.eventStream.end(); this.eventStream = undefined; } grpcEmit(type, // https://stackoverflow.com/a/49286056/1123955 obj) { log.verbose('EventStreamManager', 'grpcEmit(%s[%s], %s)', EventTypeRev[type], type, JSON.stringify(obj)); const response = new grpcPuppet.EventResponse(); response.setType(type); response.setPayload(JSON.stringify(obj)); if (this.eventStream) { this.eventStream.write(response); } else { /** * Huan(202108): TODO: add a queue for store a maximum number of responses before the stream get connected */ log.warn('EventStreamManager', 'grpcEmit(%s, %s) this.eventStream is undefined.', type, JSON.stringify(obj)); } } connectPuppetEventToStreamingCall() { log.verbose('EventStreamManager', 'connectPuppetEventToStreamingCall() for %s', this.puppet); const offCallbackList = []; const offAll = () => { log.verbose('EventStreamManager', 'connectPuppetEventToStreamingCall() offAll() %s callbacks', offCallbackList.length); offCallbackList.forEach(off => off()); this.puppetListening = false; }; const eventNameList = Object.keys(PUPPET.types.PUPPET_EVENT_DICT); for (const eventName of eventNameList) { log.verbose('EventStreamManager', 'connectPuppetEventToStreamingCall() this.puppet.on(%s) (listenerCount:%s) registering...', eventName, this.puppet.listenerCount(eventName)); switch (eventName) { case 'dong': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_DONG, payload); this.puppet.on('dong', listener); const off = () => this.puppet.off('dong', listener); offCallbackList.push(off); break; } case 'dirty': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_DIRTY, payload); this.puppet.on('dirty', listener); const off = () => this.puppet.off('dirty', listener); offCallbackList.push(off); break; } case 'error': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_ERROR, payload); this.puppet.on('error', listener); const off = () => this.puppet.off('error', listener); offCallbackList.push(off); break; } case 'heartbeat': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_HEARTBEAT, payload); this.puppet.on('heartbeat', listener); const off = () => this.puppet.off('heartbeat', listener); offCallbackList.push(off); break; } case 'friendship': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_FRIENDSHIP, payload); this.puppet.on('friendship', listener); const off = () => this.puppet.off('friendship', listener); offCallbackList.push(off); break; } case 'login': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_LOGIN, payload); this.puppet.on('login', listener); const off = () => this.puppet.off('login', listener); offCallbackList.push(off); break; } case 'logout': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_LOGOUT, payload); this.puppet.on('logout', listener); const off = () => this.puppet.off('logout', listener); offCallbackList.push(off); break; } case 'message': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_MESSAGE, payload); this.puppet.on('message', listener); const off = () => this.puppet.off('message', listener); offCallbackList.push(off); break; } case 'post': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_POST, payload); this.puppet.on('post', listener); const off = () => this.puppet.off('post', listener); offCallbackList.push(off); break; } case 'ready': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_READY, payload); this.puppet.on('ready', listener); const off = () => this.puppet.off('ready', listener); offCallbackList.push(off); break; } case 'room-invite': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_ROOM_INVITE, payload); this.puppet.on('room-invite', listener); const off = () => this.puppet.off('room-invite', listener); offCallbackList.push(off); break; } case 'room-join': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_ROOM_JOIN, payload); this.puppet.on('room-join', listener); const off = () => this.puppet.off('room-join', listener); offCallbackList.push(off); break; } case 'room-leave': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_ROOM_LEAVE, payload); this.puppet.on('room-leave', listener); const off = () => this.puppet.off('room-leave', listener); offCallbackList.push(off); break; } case 'room-topic': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_ROOM_TOPIC, payload); this.puppet.on('room-topic', listener); const off = () => this.puppet.off('room-topic', listener); offCallbackList.push(off); break; } case 'scan': { const listener = (payload) => this.grpcEmit(grpcPuppet.EventType.EVENT_TYPE_SCAN, payload); this.puppet.on('scan', listener); const off = () => this.puppet.off('scan', listener); offCallbackList.push(off); break; } case 'reset': // the `reset` event should be dealed internally, should not send out break; default: // Huan(202003): in default, the `eventName` type should be `never`, please check. throw new Error('eventName ' + eventName + ' unsupported!'); } } this.puppetListening = true; return offAll; } /** * Detect if the streaming call was gone (GRPC disconnects) * https://github.com/grpc/grpc/issues/8117#issuecomment-362198092 */ onStreamingCallEnd(removePuppetListeners) { log.verbose('EventStreamManager', 'onStreamingCallEnd(callback)'); if (!this.eventStream) { throw new Error('no this.eventStream found'); } /** * Huan(202110): useful log messages * * ServiceCtl<PuppetServiceMixin> stop() super.stop() ... done * StateSwitch <PuppetServiceMixin> inactive(true) <- (pending) * EventStreamManager this.onStreamingCallEnd() this.eventStream.on(finish) fired * EventStreamManager connectPuppetEventToStreamingCall() offAll() 14 callbacks * EventStreamManager this.onStreamingCallEnd() this.eventStream.on(finish) eventStream is undefined * EventStreamManager this.onStreamingCallEnd() this.eventStream.on(close) fired * EventStreamManager this.onStreamingCallEnd() this.eventStream.on(close) eventStream is undefined * EventStreamManager this.onStreamingCallEnd() this.eventStream.on(cancelled) fired with arguments: {} * EventStreamManager this.onStreamingCallEnd() this.eventStream.on(cancelled) eventStream is undefined * GrpcClient stop() stop client ... done */ this.eventStream.on('cancelled', () => { log.verbose('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(cancelled) fired with arguments: %s', JSON.stringify(arguments)); if (this.puppetListening) { removePuppetListeners(); } if (this.eventStream) { this.eventStream = undefined; } else { log.warn('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(cancelled) eventStream is undefined'); } }); this.eventStream.on('error', err => { log.verbose('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(error) fired: %s', err); if (this.puppetListening) { removePuppetListeners(); } if (this.eventStream) { this.eventStream = undefined; } else { log.warn('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(error) eventStream is undefined'); } }); this.eventStream.on('finish', () => { log.verbose('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(finish) fired'); if (this.puppetListening) { removePuppetListeners(); } if (this.eventStream) { this.eventStream = undefined; } else { log.warn('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(finish) eventStream is undefined'); } }); this.eventStream.on('end', () => { log.verbose('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(end) fired'); if (this.puppetListening) { removePuppetListeners(); } if (this.eventStream) { this.eventStream = undefined; } else { log.warn('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(end) eventStream is undefined'); } }); this.eventStream.on('close', () => { log.verbose('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(close) fired'); if (this.puppetListening) { removePuppetListeners(); } if (this.eventStream) { this.eventStream = undefined; } else { log.warn('EventStreamManager', 'this.onStreamingCallEnd() this.eventStream.on(close) eventStream is undefined'); } }); } } export { EventStreamManager }; //# sourceMappingURL=event-stream-manager.js.map