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#!/usr/bin/python2.4
# Copyright (c) 2006-2008 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.
"""SiteCompare command to time page loads
Loads a series of URLs in a series of browsers (and browser versions)
and measures how long the page takes to load in each. Outputs a
comma-delimited file. The first line is "URL,[browser names", each
additional line is a URL follored by comma-delimited times (in seconds),
or the string "timeout" or "crashed".
"""
import os # Functions for walking the directory tree
import tempfile # Get a temporary directory to hold intermediates
import command_line
import drivers # Functions for driving keyboard/mouse/windows, OS-specific
import operators # Functions that, given two bitmaps as input, produce
# output depending on the performance of an operation
import scrapers # Functions that know how to capture a render from
# particular browsers
def CreateCommand(cmdline):
"""Inserts the command and arguments into a command line for parsing."""
cmd = cmdline.AddCommand(
["timeload"],
"Measures how long a series of URLs takes to load in one or more browsers.",
None,
ExecuteTimeLoad)
cmd.AddArgument(
["-b", "--browsers"], "List of browsers to use. Comma-separated",
type="string", required=True)
cmd.AddArgument(
["-bp", "--browserpaths"], "List of paths to browsers. Comma-separated",
type="string", required=False)
cmd.AddArgument(
["-bv", "--browserversions"], "List of versions of browsers. Comma-separated",
type="string", required=False)
cmd.AddArgument(
["-u", "--url"], "URL to time")
cmd.AddArgument(
["-l", "--list"], "List of URLs to time", type="readfile")
cmd.AddMutualExclusion(["--url", "--list"])
cmd.AddArgument(
["-s", "--startline"], "First line of URL list", type="int")
cmd.AddArgument(
["-e", "--endline"], "Last line of URL list (exclusive)", type="int")
cmd.AddArgument(
["-c", "--count"], "Number of lines of URL file to use", type="int")
cmd.AddDependency("--startline", "--list")
cmd.AddRequiredGroup(["--url", "--list"])
cmd.AddDependency("--endline", "--list")
cmd.AddDependency("--count", "--list")
cmd.AddMutualExclusion(["--count", "--endline"])
cmd.AddDependency("--count", "--startline")
cmd.AddArgument(
["-t", "--timeout"], "Amount of time (seconds) to wait for browser to "
"finish loading",
type="int", default=60)
cmd.AddArgument(
["-log", "--logfile"], "File to write output", type="string", required=True)
cmd.AddArgument(
["-sz", "--size"], "Browser window size", default=(800, 600), type="coords")
def ExecuteTimeLoad(command):
"""Executes the TimeLoad command."""
browsers = command["--browsers"].split(",")
num_browsers = len(browsers)
if command["--browserversions"]:
browser_versions = command["--browserversions"].split(",")
else:
browser_versions = [None] * num_browsers
if command["--browserpaths"]:
browser_paths = command["--browserpaths"].split(",")
else:
browser_paths = [None] * num_browsers
if len(browser_versions) != num_browsers:
raise ValueError(
"--browserversions must be same length as --browser_paths")
if len(browser_paths) != num_browsers:
raise ValueError(
"--browserversions must be same length as --browser_paths")
if [b for b in browsers if b not in ["chrome", "ie", "firefox"]]:
raise ValueError("unknown browsers: %r" % b)
scraper_list = []
for b in xrange(num_browsers):
version = browser_versions[b]
if not version: version = None
scraper = scrapers.GetScraper( (browsers[b], version) )
if not scraper:
raise ValueError("could not find scraper for (%r, %r)" %
(browsers[b], version))
scraper_list.append(scraper)
if command["--url"]:
url_list = [command["--url"]]
else:
startline = command["--startline"]
if command["--count"]:
endline = startline+command["--count"]
else:
endline = command["--endline"]
url_list = [url.strip() for url in
open(command["--list"], "r").readlines()[startline:endline]]
log_file = open(command["--logfile"], "w")
log_file.write("URL")
for b in xrange(num_browsers):
log_file.write(",%s" % browsers[b])
if browser_versions[b]: log_file.write(" %s" % browser_versions[b])
log_file.write("\n")
results = {}
for url in url_list:
results[url] = [None] * num_browsers
for b in xrange(num_browsers):
result = scraper_list[b].Time(url_list, command["--size"],
command["--timeout"],
path=browser_paths[b])
for (url, time) in result:
results[url][b] = time
# output the results
for url in url_list:
log_file.write(url)
for b in xrange(num_browsers):
log_file.write(",%r" % results[url][b])
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