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| 1 // Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE.md file. | |
| 4 | |
| 5 library fletchc.hub.session_manager; | |
| 6 | |
| 7 import 'dart:async' show | |
| 8 Future, | |
| 9 Timer; | |
| 10 | |
| 11 import 'client_commands.dart' show | |
| 12 CommandSender; | |
| 13 | |
| 14 import 'hub_main.dart' show | |
| 15 WorkerConnection; | |
| 16 | |
| 17 export 'hub_main.dart' show | |
| 18 WorkerConnection; | |
| 19 | |
| 20 import '../worker/developer.dart' show | |
| 21 Settings; | |
| 22 | |
| 23 import '../diagnostic.dart' show | |
| 24 DiagnosticKind, | |
| 25 DiagnosticParameter, | |
| 26 InputError, | |
| 27 throwFatalError, | |
| 28 throwInternalError; | |
| 29 | |
| 30 import '../../fletch_system.dart' show | |
| 31 FletchDelta; | |
| 32 | |
| 33 export '../../fletch_system.dart' show | |
| 34 FletchDelta; | |
| 35 | |
| 36 import '../../vm_session.dart' show | |
| 37 Session; | |
| 38 | |
| 39 export '../../vm_session.dart' show | |
| 40 Session; | |
| 41 | |
| 42 import '../../fletch_compiler.dart' show | |
| 43 FletchCompiler; | |
| 44 | |
| 45 export '../../fletch_compiler.dart' show | |
| 46 FletchCompiler; | |
| 47 | |
| 48 import '../../incremental/fletchc_incremental.dart' show | |
| 49 IncrementalCompiler; | |
| 50 | |
| 51 export '../../incremental/fletchc_incremental.dart' show | |
| 52 IncrementalCompiler; | |
| 53 | |
| 54 import '../../fletch_vm.dart' show | |
| 55 FletchVm; | |
| 56 | |
| 57 export '../../fletch_vm.dart' show | |
| 58 FletchVm; | |
| 59 | |
| 60 // TODO(karlklose): we need a better API for session management. | |
| 61 class Sessions { | |
| 62 static Iterable<String> get names { | |
| 63 return internalSessions.keys; | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 final Map<String, UserSession> internalSessions = <String, UserSession>{}; | |
| 68 | |
| 69 // TODO(ahe): We need a command to switch to another session. | |
| 70 String internalCurrentSession = "local"; | |
| 71 | |
| 72 String get currentSession => internalCurrentSession; | |
| 73 | |
| 74 Future<UserSession> createSession( | |
| 75 String name, | |
| 76 Future<WorkerConnection> allocateWorker()) async { | |
| 77 if (name == null) { | |
| 78 throw new ArgumentError("session name must not be `null`."); | |
| 79 } | |
| 80 | |
| 81 UserSession session = lookupSession(name); | |
| 82 if (session != null) { | |
| 83 throwFatalError(DiagnosticKind.sessionAlreadyExists, sessionName: name); | |
| 84 } | |
| 85 session = new UserSession(name, await allocateWorker()); | |
| 86 internalSessions[name] = session; | |
| 87 return session; | |
| 88 } | |
| 89 | |
| 90 UserSession lookupSession(String name) => internalSessions[name]; | |
| 91 | |
| 92 // Remove the session named [name] from [internalSessions], but caller must | |
| 93 // ensure that [worker] has its static state cleaned up and returned to the | |
| 94 // isolate pool. | |
| 95 UserSession endSession(String name) { | |
| 96 UserSession session = internalSessions.remove(name); | |
| 97 if (session == null) { | |
| 98 throwFatalError(DiagnosticKind.noSuchSession, sessionName: name); | |
| 99 } | |
| 100 return session; | |
| 101 } | |
| 102 | |
| 103 void endAllSessions() { | |
| 104 internalSessions.forEach((String name, UserSession session) { | |
| 105 print("Ending session: $name"); | |
| 106 session.worker.endSession(); | |
| 107 }); | |
| 108 internalSessions.clear(); | |
| 109 } | |
| 110 | |
| 111 /// A session in the hub (main isolate). | |
| 112 class UserSession { | |
| 113 final String name; | |
| 114 | |
| 115 final WorkerConnection worker; | |
| 116 | |
| 117 bool hasActiveWorkerTask = false; | |
| 118 | |
| 119 UserSession(this.name, this.worker); | |
| 120 | |
| 121 void kill(void printLineOnStderr(String line)) { | |
| 122 worker.isolate.kill(); | |
| 123 internalSessions.remove(name); | |
| 124 InputError error = new InputError( | |
| 125 DiagnosticKind.terminatedSession, | |
| 126 <DiagnosticParameter, dynamic>{DiagnosticParameter.sessionName: name}); | |
| 127 printLineOnStderr(error.asDiagnostic().formatMessage()); | |
| 128 } | |
| 129 } | |
| 130 | |
| 131 typedef void SendBytesFunction(List<int> bytes); | |
| 132 | |
| 133 class BufferingOutputSink implements Sink<List<int>> { | |
| 134 SendBytesFunction sendBytes; | |
| 135 | |
| 136 List<List<int>> buffer = new List(); | |
| 137 | |
| 138 void attachCommandSender(SendBytesFunction sendBytes) { | |
| 139 for (List<int> data in buffer) { | |
| 140 sendBytes(data); | |
| 141 } | |
| 142 buffer = new List(); | |
| 143 this.sendBytes = sendBytes; | |
| 144 } | |
| 145 | |
| 146 void detachCommandSender() { | |
| 147 assert(sendBytes != null); | |
| 148 sendBytes = null; | |
| 149 } | |
| 150 | |
| 151 void add(List<int> bytes) { | |
| 152 if (sendBytes != null) { | |
| 153 sendBytes(bytes); | |
| 154 } else { | |
| 155 buffer.add(bytes); | |
| 156 } | |
| 157 } | |
| 158 | |
| 159 void close() { | |
| 160 throwInternalError("Unimplemented"); | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 /// The state stored in a worker isolate of a [UserSession]. | |
| 165 /// TODO(wibling): This should be moved into a worker specific file. | |
| 166 class SessionState { | |
| 167 final String name; | |
| 168 | |
| 169 final BufferingOutputSink stdoutSink = new BufferingOutputSink(); | |
| 170 | |
| 171 final BufferingOutputSink stderrSink = new BufferingOutputSink(); | |
| 172 | |
| 173 final FletchCompiler compilerHelper; | |
| 174 | |
| 175 final IncrementalCompiler compiler; | |
| 176 | |
| 177 final List<FletchDelta> compilationResults = <FletchDelta>[]; | |
| 178 | |
| 179 final List<String> loggedMessages = <String>[]; | |
| 180 | |
| 181 Uri script; | |
| 182 | |
| 183 Session session; | |
| 184 | |
| 185 FletchVm fletchVm; | |
| 186 | |
| 187 int fletchAgentVmId; | |
| 188 | |
| 189 Settings settings; | |
| 190 | |
| 191 bool explicitAttach = false; | |
| 192 | |
| 193 SessionState(this.name, this.compilerHelper, this.compiler, this.settings); | |
| 194 | |
| 195 bool get hasRemoteVm => fletchAgentVmId != null; | |
| 196 | |
| 197 bool get colorsDisabled => session == null ? false : session.colorsDisabled; | |
| 198 | |
| 199 void addCompilationResult(FletchDelta delta) { | |
| 200 compilationResults.add(delta); | |
| 201 } | |
| 202 | |
| 203 void resetCompiler() { | |
| 204 compilationResults.clear(); | |
| 205 } | |
| 206 | |
| 207 Future terminateSession() async { | |
| 208 if (session != null) { | |
| 209 if (!session.terminated) { | |
| 210 bool done = false; | |
| 211 Timer timer = new Timer(const Duration(seconds: 5), () { | |
| 212 if (!done) { | |
| 213 print("Timed out waiting for Fletch VM to shutdown; killing " | |
| 214 "session"); | |
| 215 session.kill(); | |
| 216 } | |
| 217 }); | |
| 218 await session.terminateSession(); | |
| 219 done = true; | |
| 220 timer.cancel(); | |
| 221 } | |
| 222 explicitAttach = false; | |
| 223 } | |
| 224 session = null; | |
| 225 } | |
| 226 | |
| 227 void attachCommandSender(CommandSender sender) { | |
| 228 stdoutSink.attachCommandSender((d) => sender.sendStdoutBytes(d)); | |
| 229 stderrSink.attachCommandSender((d) => sender.sendStderrBytes(d)); | |
| 230 } | |
| 231 | |
| 232 void detachCommandSender() { | |
| 233 stdoutSink.detachCommandSender(); | |
| 234 stderrSink.detachCommandSender(); | |
| 235 } | |
| 236 | |
| 237 void log(message) { | |
| 238 loggedMessages.add("[$name: ${new DateTime.now()} $message]"); | |
| 239 } | |
| 240 | |
| 241 String getLog() => loggedMessages.join("\n"); | |
| 242 | |
| 243 static SessionState internalCurrent; | |
| 244 | |
| 245 /// Don't use this as a shortcut to get a [SessionState] object. Generally, a | |
| 246 /// [SessionState] object should be passed as a parameter to any user of it, | |
| 247 /// otherwise API that takes a [SessionState] object doesn't work correctly | |
| 248 /// and testing becomes hard. | |
| 249 /// | |
| 250 /// TODO(ahe): Perhaps we can remove this getter, and [internalCurrent] by | |
| 251 /// storing this object in ../worker/worker_main.dart. For example, | |
| 252 /// [workerMain] holds a reference to an instance of [SessionState] and | |
| 253 /// passes this reference to [WorkerSideTask] which can in turn pass it on to | |
| 254 /// the verb/task in [WorkerSideTask.performTask]. | |
| 255 static SessionState get current => internalCurrent; | |
| 256 } | |
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Chromium Code Reviews
Issue 1659163007:
Rename fletch -> dartino (Closed)
Base URL: https://github.com/dartino/sdk.git@master