move performance measurement to benchmark/integration

pkg/analysis_server/test/performance/log_file_input_converter.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 input.transformer.log_file;
-
-import 'dart:convert';
-
-import 'package:analyzer/src/generated/java_engine.dart';
-import 'package:logging/logging.dart';
-
-import 'input_converter.dart';
-import 'operation.dart';
-
-const CONNECTED_MSG_FRAGMENT = ' <= {"event":"server.connected"';
-final int NINE = '9'.codeUnitAt(0);
-const RECEIVED_FRAGMENT = ' <= {';
-const SENT_FRAGMENT = ' => {';
-final int ZERO = '0'.codeUnitAt(0);
-
-/**
- * [LogFileInputConverter] converts a log file stream
- * into a series of operations to be sent to the analysis server.
- */
-class LogFileInputConverter extends CommonInputConverter {
-  LogFileInputConverter(String tmpSrcDirPath, Map<String, String> srcPathMap,
-      {int diagnosticPort})
-      : super(tmpSrcDirPath, srcPathMap, diagnosticPort: diagnosticPort);
-
-  @override
-  Operation convert(String line) {
-    try {
-      String timeStampString = _parseTimeStamp(line);
-      String data = line.substring(timeStampString.length);
-      if (data.startsWith(RECEIVED_FRAGMENT)) {
-        Map<String, dynamic> json = JSON.decode(data.substring(4));
-        if (json.containsKey('event')) {
-          return convertNotification(json);
-        } else {
-          return convertResponse(json);
-        }
-      } else if (data.startsWith(SENT_FRAGMENT)) {
-        Map<String, dynamic> json = JSON.decode(data.substring(4));
-        if (json.containsKey('method')) {
-          return convertRequest(json);
-        }
-        return null;
-      }
-      logger.log(Level.INFO, 'unknown input line: $line');
-      return null;
-    } catch (e, s) {
-      throw new AnalysisException(
-          'Failed to parse line\n  $line', new CaughtException(e, s));
-    }
-  }
-
-  /**
-   * Determine if the given line is from an instrumentation file.
-   * For example:
-   * `1428347977499 <= {"event":"server.connected","params":{"version":"1.6.0"}}`
-   */
-  static bool isFormat(String line) {
-    String timeStampString = _parseTimeStamp(line);
-    int start = timeStampString.length;
-    int end = start + CONNECTED_MSG_FRAGMENT.length;
-    return (10 < start && end < line.length) &&
-        line.substring(start, end) == CONNECTED_MSG_FRAGMENT;
-  }
-
-  /**
-   * Parse the given line and return the millisecond timestamp or `null`
-   * if it cannot be determined.
-   */
-  static String _parseTimeStamp(String line) {
-    int index = 0;
-    while (index < line.length) {
-      int code = line.codeUnitAt(index);
-      if (code < ZERO || NINE < code) {
-        return line.substring(0, index);
-      }
-      ++index;
-    }
-    return line;
-  }
-}