File-based and multicast InstrumentationServer implementations.

pkg/analyzer/lib/instrumentation/instrumentation.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library instrumentation;
 
 /**
  * The interface used by client code to communicate with an instrumentation
  * server.
  */
@@ skipping 168 matching lines @@
   /**
    * Convert the given [object] to a string.
    */
   String _toString(Object object) {
     if (object == null) {
       return 'null';
     }
     return object.toString();
   }
 }
+
+/**
+ * An [InstrumentationServer] that sends messages to multiple instances.
+ */
+class MulticastInstrumentationServer implements InstrumentationServer {
+  final List<InstrumentationServer> _servers;
+
+  MulticastInstrumentationServer(this._servers);
+
+  @override
+  void log(String message) {
+    for (InstrumentationServer server in _servers) {
+      server.log(message);
+    }
+  }
+
+  @override
+  void logWithPriority(String message) {
+    for (InstrumentationServer server in _servers) {
+      server.logWithPriority(message);
+    }
+  }
+
+  @override
+  void shutdown() {
+    for (InstrumentationServer server in _servers) {
+      server.shutdown();
+    }
+  }
+}