move performance measurement to benchmark/integration

pkg/analysis_server/test/performance/main.dart

-// 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.
-
-library server.performance;
-
-import 'dart:async';
-import 'dart:convert';
-import 'dart:io';
-
-import 'package:args/args.dart';
-import 'package:logging/logging.dart';
-import 'package:path/path.dart' as path;
-
-import 'driver.dart';
-import 'input_converter.dart';
-import 'operation.dart';
-
-/**
- * Launch and interact with the analysis server.
- */
-main(List<String> rawArgs) {
-  Logger logger = new Logger('Performance Measurement Client');
-  logger.onRecord.listen((LogRecord rec) {
-    print(rec.message);
-  });
-  PerfArgs args = parseArgs(rawArgs);
-
-  Driver driver = new Driver(logger);
-  Stream<Operation> stream = openInput(args);
-  StreamSubscription<Operation> subscription;
-  subscription = stream.listen((Operation op) {
-    Future future = driver.perform(op);
-    if (future != null) {
-      logger.log(Level.FINE, 'pausing operations for ${op.runtimeType}');
-      subscription.pause(future.then((_) {
-        logger.log(Level.FINE, 'resuming operations');
-      }));
-    }
-  }, onDone: () {
-    subscription.cancel();
-    driver.stopServer(SHUTDOWN_TIMEOUT);
-  }, onError: (e, s) {
-    subscription.cancel();
-    logger.log(Level.SEVERE, '$e\n$s');
-    driver.stopServer(SHUTDOWN_TIMEOUT);
-  });
-  driver.runComplete.then((Results results) {
-    results.printResults();
-  }).whenComplete(() {
-    return subscription.cancel();
-  });
-}
-
-const DIAGNOSTIC_PORT_OPTION = 'diagnosticPort';
-const HELP_CMDLINE_OPTION = 'help';
-const INPUT_CMDLINE_OPTION = 'input';
-const MAP_OPTION = 'map';
-
-/**
- * The amount of time to give the server to respond to a shutdown request
- * before forcibly terminating it.
- */
-const Duration SHUTDOWN_TIMEOUT = const Duration(seconds: 25);
-
-const TMP_SRC_DIR_OPTION = 'tmpSrcDir';
-const VERBOSE_CMDLINE_OPTION = 'verbose';
-const VERY_VERBOSE_CMDLINE_OPTION = 'vv';
-
-/**
- * Open and return the input stream specifying how this client
- * should interact with the analysis server.
- */
-Stream<Operation> openInput(PerfArgs args) {
-  var logger = new Logger('openInput');
-  Stream<List<int>> inputRaw;
-  if (args.inputPath == 'stdin') {
-    inputRaw = stdin;
-  } else {
-    inputRaw = new File(args.inputPath).openRead();
-  }
-  args.srcPathMap.forEach((oldPath, newPath) {
-    logger.log(
-        Level.INFO, 'mapping source path\n  from $oldPath\n  to   $newPath');
-  });
-  logger.log(Level.INFO, 'tmpSrcDir: ${args.tmpSrcDirPath}');
-  return inputRaw
-      .transform(SYSTEM_ENCODING.decoder)
-      .transform(new LineSplitter())
-      .transform(new InputConverter(args.tmpSrcDirPath, args.srcPathMap,
-          diagnosticPort: args.diagnosticPort));
-}
-
-/**
- * Parse the command line arguments.
- */
-PerfArgs parseArgs(List<String> rawArgs) {
-  ArgParser parser = new ArgParser();
-
-  parser.addOption(INPUT_CMDLINE_OPTION, abbr: 'i', help: '<filePath>\n'
-      'The input file specifying how this client should interact with the server.\n'
-      'If the input file name is "stdin", then the instructions are read from standard input.');
-  parser.addOption(MAP_OPTION,
-      abbr: 'm',
-      allowMultiple: true,
-      splitCommas: false,
-      help: '<oldSrcPath>,<newSrcPath>\n'
-      'This option defines a mapping from the original source directory <oldSrcPath>\n'
-      'when the instrumentation or log file was generated\n'
-      'to the target source directory <newSrcPath> used during performance testing.\n'
-      'Multiple mappings can be specified.\n'
-      'WARNING: The contents of the target directory will be modified');
-  parser.addOption(TMP_SRC_DIR_OPTION, abbr: 't', help: '<dirPath>\n'
-      'The temporary directory containing source used during performance measurement.\n'
-      'WARNING: The contents of the target directory will be modified');
-  parser.addOption(DIAGNOSTIC_PORT_OPTION,
-      abbr: 'd',
-      help: 'localhost port on which server will provide diagnostic web pages');
-  parser.addFlag(VERBOSE_CMDLINE_OPTION,
-      abbr: 'v', help: 'Verbose logging', negatable: false);
-  parser.addFlag(VERY_VERBOSE_CMDLINE_OPTION,
-      help: 'Extra verbose logging', negatable: false);
-  parser.addFlag(HELP_CMDLINE_OPTION,
-      abbr: 'h', help: 'Print this help information', negatable: false);
-
-  ArgResults args;
-  PerfArgs perfArgs = new PerfArgs();
-  try {
-    args = parser.parse(rawArgs);
-  } on Exception catch (e) {
-    print(e);
-    printHelp(parser);
-    exit(1);
-  }
-
-  bool showHelp = args[HELP_CMDLINE_OPTION] || args.rest.isNotEmpty;
-
-  bool isMissing(key) => args[key] == null || args[key].isEmpty;
-
-  perfArgs.inputPath = args[INPUT_CMDLINE_OPTION];
-  if (isMissing(INPUT_CMDLINE_OPTION)) {
-    print('missing $INPUT_CMDLINE_OPTION argument');
-    showHelp = true;
-  }
-
-  perfArgs.srcPathMap = <String, String>{};
-  for (String pair in args[MAP_OPTION]) {
-    if (pair is String) {
-      int index = pair.indexOf(',');
-      if (index != -1 && pair.indexOf(',', index + 1) == -1) {
-        String oldSrcPath = _withTrailingSeparator(pair.substring(0, index));
-        String newSrcPath = _withTrailingSeparator(pair.substring(index + 1));
-        if (new Directory(newSrcPath).existsSync()) {
-          perfArgs.srcPathMap[oldSrcPath] = newSrcPath;
-          continue;
-        }
-      }
-    }
-    print('must specifiy $MAP_OPTION <oldSrcPath>,<newSrcPath>');
-    showHelp = true;
-  }
-
-  perfArgs.tmpSrcDirPath = _withTrailingSeparator(args[TMP_SRC_DIR_OPTION]);
-  if (isMissing(TMP_SRC_DIR_OPTION)) {
-    print('missing $TMP_SRC_DIR_OPTION argument');
-    showHelp = true;
-  }
-
-  String portText = args[DIAGNOSTIC_PORT_OPTION];
-  if (portText != null) {
-    perfArgs.diagnosticPort = int.parse(portText, onError: (s) {
-      print('invalid $DIAGNOSTIC_PORT_OPTION: $s');
-      showHelp = true;
-    });
-  }
-
-  if (args[VERY_VERBOSE_CMDLINE_OPTION] || rawArgs.contains('-vv')) {
-    Logger.root.level = Level.FINE;
-  } else if (args[VERBOSE_CMDLINE_OPTION]) {
-    Logger.root.level = Level.INFO;
-  } else {
-    Logger.root.level = Level.WARNING;
-  }
-
-  if (showHelp) {
-    printHelp(parser);
-    exit(1);
-  }
-
-  return perfArgs;
-}
-
-void printHelp(ArgParser parser) {
-  print('');
-  print('Launch and interact with the AnalysisServer');
-  print('');
-  print(parser.usage);
-}
-
-/**
- * Ensure that the given path has a trailing separator
- */
-String _withTrailingSeparator(String dirPath) {
-  if (dirPath != null && dirPath.length > 4) {
-    if (!dirPath.endsWith(path.separator)) {
-      return '$dirPath${path.separator}';
-    }
-  }
-  return dirPath;
-}
-
-/**
- * The performance measurement arguments specified on the command line.
- */
-class PerfArgs {
-
-  /**
-   * The file path of the instrumentation or log file
-   * used to drive performance measurement,
-   * or 'stdin' if this information should be read from standard input.
-   */
-  String inputPath;
-
-  /**
-   * A mapping from the original source directory
-   * when the instrumentation or log file was generated
-   * to the target source directory used during performance testing.
-   */
-  Map<String, String> srcPathMap;
-
-  /**
-   * The temporary directory containing source used during performance measurement.
-   */
-  String tmpSrcDirPath;
-
-  /**
-   * The diagnostic port for Analysis Server or `null` if none.
-   */
-  int diagnosticPort;
-}