analysis server performance measurement - work in progress

pkg/analysis_server/test/performance/local_runner.dart

Index: pkg/analysis_server/test/performance/local_runner.dart
diff --git a/pkg/analysis_server/test/performance/local_runner.dart b/pkg/analysis_server/test/performance/local_runner.dart
new file mode 100644
index 0000000000000000000000000000000000000000..120627baddb8159394da6f2d9c85ca6a134e6468
--- /dev/null
+++ b/pkg/analysis_server/test/performance/local_runner.dart
@@ -0,0 +1,86 @@
+// Copyright (c) 2015, 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.
+
+import 'dart:io';
+import 'package:path/path.dart';
+import 'main.dart' as performance;
+
+// Local driver for performance measurement
+
+main(List<String> args) {
+  /*
+   * Parse arguments
+   */
+  if (args.length != 3) printHelp('Expected 3 arguments');
+  var gitDir = new Directory(args[0]);
+  if (!gitDir.existsSync()) printHelp('${gitDir.path} does not exist');
+  if (!new Directory(join(gitDir.path, '.git')).existsSync()) printHelp(
+      '${gitDir.path} does not appear to be a local git repository');
+  var branch = args[1];
+  var inputFile = new File(args[2]);
+  if (!inputFile.existsSync()) printHelp('${inputFile.path} does not exist');
+  /*
+   * Create a new temp directory
+   */
+  var tmpDir = new Directory(
+      join(Directory.systemTemp.path, 'analysis_server_perf_target'));
+  if (!tmpDir.path.contains('tmp')) throw 'invalid tmp directory\n  $tmpDir';
+  print('Extracting target analysis environment into\n  ${tmpDir.path}');
+  if (tmpDir.existsSync()) tmpDir.deleteSync(recursive: true);
+  tmpDir.createSync(recursive: true);
+  /*
+   * Setup the initial target source in the temp directory
+   */
+  var tarFilePath = join(tmpDir.path, 'targetSrc.tar');
+  var result = Process.runSync('git', ['archive', branch, '-o', tarFilePath],
+      workingDirectory: gitDir.path);
+  if (result.exitCode != 0) throw 'failed to obtain target source: $result';
+  var tmpSrcDirPath = join(tmpDir.path, 'targetSrc');
+  new Directory(tmpSrcDirPath).createSync();
+  result = Process.runSync('tar', ['-xf', tarFilePath],
+      workingDirectory: tmpSrcDirPath);
+  if (result.exitCode != 0) throw 'failed to extract target source: $result';
+  /*
+   * Symlink the out or xcodebuild directory
+   */
+  var outDirName = 'out';
+  if (!new Directory(join(gitDir.path, outDirName)).existsSync()) {
+    outDirName = 'xcodebuild';
+  }
+  if (!new Directory(join(gitDir.path, outDirName)).existsSync()) {
+    throw 'failed to find out or xcodebuild directory';
+  }
+  result = Process.runSync('ln', [
+    '-s',
+    join(gitDir.path, outDirName),
+    join(tmpSrcDirPath, outDirName)
+  ]);
+  if (result.exitCode != 0) throw 'failed to link out or xcodebuild: $result';
+  /*
+   * Launch the performance analysis tool
+   */
+  performance.main([
+    //'-vv', // very verbose
+    '-i',
+    inputFile.path,
+    '--mapFrom',
+    gitDir.path,
+    '--mapTo',
+    tmpSrcDirPath
+  ]);
+}
+
+/// Print help and exit
+void printHelp([String errMsg]) {
+  if (errMsg != null) {
+    print('');
+    print('Error: $errMsg');
+    print('');
+  }
+  print('Arguments: <gitDir> <branch> <inputFile>');
+  print('gitDir = git repository containing the initial target source');
+  print('branch = the branch containing the initial target source');
+  print('inputFile = the instrumentation or log file');
+  exit(1);
+}