Replace about:net-internals with the javascript-based frontend....

net/tools/dns_trace_formatter/parser.py

-#!/usr/bin/python2.4
-# Copyright (c) 2010 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-"""Package for parsing the log lines from a Chromium DNS trace capture."""
-
-import re
-
-# The type of log line.
-(LINE_TYPE_OUTSTANDING_JOB,
- LINE_TYPE_CREATED_JOB,
- LINE_TYPE_STARTING_JOB,
- LINE_TYPE_RUNNING_JOB,
- LINE_TYPE_COMPLETED_JOB,
- LINE_TYPE_COMPLETING_JOB,
- LINE_TYPE_RECEIVED_REQUEST,
- LINE_TYPE_ATTACHED_REQUEST,
- LINE_TYPE_FINISHED_REQUEST,
- LINE_TYPE_CANCELLED_REQUEST) = range(10)
-
-class ParsedLine(object):
-  """Structure that represents a parsed line from the trace log.
-
-  Attributes:
-    t: The time (in milliseconds) when the line was logged.
-    line_type: The type of event that this line was logging. One of LINE_TYPE_*.
-    raw_line: The full unparsed line.
-    details: Dictionary containing additional properties that were parsed from
-             this line.
-  """
-
-  def __init__(self):
-    self.t = None
-    self.line_type = None
-    self.raw_line = None
-    self.details = {}
-
-
-def ParseLine(line):
-  """Parses |line| into a ParsedLine. Returns None on failure."""
-
-  m = re.search(r'^t=(\d+):  "(.*)"\s*$', line)
-  if not m:
-    return None
-
-  parsed = ParsedLine()
-  parsed.t = int(m.group(1))
-  parsed.raw_line = line.strip()
-
-  msg = m.group(2)
-
-  m = re.search(r"^Received request (r\d+) for (.*)$", msg)
-  if m:
-    parsed.line_type = LINE_TYPE_RECEIVED_REQUEST
-    parsed.entity_id = m.group(1)
-    parsed.details['request_details'] = m.group(2)
-    return parsed
-
-  m = re.search(r"^Created job (j\d+) for {hostname='([^']*)', "
-                "address_family=(\d+)}$", msg)
-  if m:
-    parsed.line_type = LINE_TYPE_CREATED_JOB
-    parsed.entity_id = m.group(1)
-    parsed.details['hostname'] = m.group(2)
-    parsed.details['address_family'] = m.group(3)
-    return parsed
-
-  m = re.search(r"^Outstanding job (j\d+) for {hostname='([^']*)', address_"
-                "family=(\d+)}, which was started at t=(\d+)$", msg)
-  if m:
-    parsed.line_type = LINE_TYPE_OUTSTANDING_JOB
-    parsed.t = int(m.group(4))
-    parsed.entity_id = m.group(1)
-    parsed.details['hostname'] = m.group(2)
-    parsed.details['address_family'] = m.group(3)
-    return parsed
-
-  m = re.search(r"^Attached request (r\d+) to job (j\d+)$", msg)
-  if m:
-    parsed.line_type = LINE_TYPE_ATTACHED_REQUEST
-    parsed.entity_id = m.group(1)
-    parsed.details['job_id'] = m.group(2)
-    return parsed
-
-  m = re.search(r'^Finished request (r\d+) (.*)$', msg)
-  if m:
-    parsed.line_type = LINE_TYPE_FINISHED_REQUEST
-    parsed.entity_id = m.group(1)
-    parsed.details['extra'] = m.group(2)
-    return parsed
-
-  m = re.search(r'^Cancelled request (r\d+)$', msg)
-  if m:
-    parsed.line_type = LINE_TYPE_CANCELLED_REQUEST
-    parsed.entity_id = m.group(1)
-    return parsed
-
-  m = re.search(r'^Starting job (j\d+)$', msg)
-  if m:
-    parsed.line_type = LINE_TYPE_STARTING_JOB
-    parsed.entity_id = m.group(1)
-    return parsed
-
-  m = re.search(r'\[resolver thread\] Running job (j\d+)$', msg)
-  if m:
-    parsed.line_type = LINE_TYPE_RUNNING_JOB
-    parsed.entity_id = m.group(1)
-    return parsed
-
-  m = re.search(r'\[resolver thread\] Completed job (j\d+)$', msg)
-  if m:
-    parsed.line_type = LINE_TYPE_COMPLETED_JOB
-    parsed.entity_id = m.group(1)
-    return parsed
-
-  m = re.search(r'Completing job (j\d+).*$', msg)
-  if m:
-    parsed.line_type = LINE_TYPE_COMPLETING_JOB
-    parsed.entity_id = m.group(1)
-    return parsed
-
-  return None
-
-
-def ParseFile(path):
-  """Parses the file at |path| and returns a list of ParsedLines."""
-  f = open(path, 'r')
-
-  entries = []
-
-  for line in f:
-    parsed = ParseLine(line)
-    if parsed:
-      entries.append(parsed)
-
-  f.close()
-  return entries
-