Send any logError() information to the IDE.

pkg/analysis_server/lib/src/analysis_logger.dart

Index: pkg/analysis_server/lib/src/analysis_logger.dart
diff --git a/pkg/analysis_server/lib/src/analysis_logger.dart b/pkg/analysis_server/lib/src/analysis_logger.dart
index 9e751a42661dde5c5ca733094661778af6d935ad..388c98eb3185ab48b77a306b3a83b40db3e3c66f 100644
--- a/pkg/analysis_server/lib/src/analysis_logger.dart
+++ b/pkg/analysis_server/lib/src/analysis_logger.dart
@@ -8,6 +8,8 @@ import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:logging/logging.dart' as logging;
 
+typedef LogMessageHandler(String message, CaughtException exception);
+
 /**
  * Instances of the class [AnalysisLogger] translate from the analysis engine's
  * API to the logging package's API.
@@ -18,7 +20,12 @@ class AnalysisLogger implements Logger {
    */
   final logging.Logger baseLogger = new logging.Logger('analysis.server');
 
-  AnalysisLogger() {
+  /**
+   * This handler is invoked for every [logError] invocation.
+   */
+  final LogMessageHandler onError;
+
+  AnalysisLogger({this.onError}) {

[Brian Wilkerson, 2015/11/12 14:52:51]

I'm not sure we need this level of flexibility. Seems like it would be cleaner
to just pass in the server and then invoke sendNotification directly. Your call.

[scheglov, 2015/11/12 16:15:56]

Done.

     logging.Logger.root.onRecord.listen((logging.LogRecord record) {
       AnalysisEngine.instance.instrumentationService.logLogEntry(
           record.level.name,
@@ -31,6 +38,9 @@ class AnalysisLogger implements Logger {
 
   @override
   void logError(String message, [CaughtException exception]) {
+    if (onError != null) {
+      onError(message, exception);
+    }
     if (exception == null) {
       baseLogger.severe(message);
     } else {