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from __future__ import absolute_import
import argparse
import os
from datetime import datetime, timedelta
import tarfile
import requests
import vcs
from cStringIO import StringIO
import logging
HEADERS = {'User-Agent': "wpt manifest download"}
def get(logger, url, **kwargs):
logger.debug(url)
if "headers" not in kwargs:
kwargs["headers"] = HEADERS
return requests.get(url, **kwargs)
def abs_path(path):
return os.path.abspath(os.path.expanduser(path))
def hg_commits(repo_root):
hg = vcs.Mercurial.get_func(repo_root)
for item in hg("log", "-fl50", "--template={node}\n", "testing/web-platform/tests",
"testing/web-platform/mozilla/tests").splitlines():
yield item
def git_commits(repo_root):
git = vcs.Git.get_func(repo_root)
for item in git("log", "--format=%H", "-n50", "testing/web-platform/tests",
"testing/web-platform/mozilla/tests").splitlines():
yield git("cinnabar", "git2hg", item).strip()
def get_commits(logger, repo_root):
if vcs.Mercurial.is_hg_repo(repo_root):
return hg_commits(repo_root)
elif vcs.Git.is_git_repo(repo_root):
return git_commits(repo_root)
logger.warning("No VCS found")
return []
def should_download(logger, manifest_paths, rebuild_time=timedelta(days=5)):
# TODO: Improve logic for when to download. Maybe if x revisions behind?
for manifest_path in manifest_paths:
if not os.path.exists(manifest_path):
return True
mtime = datetime.fromtimestamp(os.path.getmtime(manifest_path))
if mtime < datetime.now() - rebuild_time:
return True
if os.path.getsize(manifest_path) == 0:
return True
logger.info("Skipping manifest download because existing file is recent")
return False
def taskcluster_url(logger, commits):
artifact_path = '/artifacts/public/manifests.tar.gz'
cset_url = ('https://hg.mozilla.org/mozilla-central/json-pushes?'
'changeset={changeset}&version=2&tipsonly=1')
tc_url = ('https://index.taskcluster.net/v1/task/gecko.v2.mozilla-central.'
'revision.{changeset}.source.manifest-upload')
for revision in commits:
req = None
if revision == 40 * "0":
continue
try:
req_headers = HEADERS.copy()
req_headers.update({'Accept': 'application/json'})
req = get(logger, cset_url.format(changeset=revision),
headers=req_headers)
req.raise_for_status()
except requests.exceptions.RequestException:
if req and req.status_code == 404:
# The API returns a 404 if it can't find a changeset for the revision.
continue
else:
return False
result = req.json()
pushes = result['pushes']
if not pushes:
continue
[cset] = pushes.values()[0]['changesets']
try:
req = get(logger, tc_url.format(changeset=cset))
except requests.exceptions.RequestException:
return False
if req.status_code == 200:
return tc_url.format(changeset=cset) + artifact_path
logger.info("Can't find a commit-specific manifest so just using the most "
"recent one")
return ("https://index.taskcluster.net/v1/task/gecko.v2.mozilla-central."
"latest.source.manifest-upload" +
artifact_path)
def download_manifest(logger, test_paths, commits_func, url_func, force=False):
manifest_paths = [item["manifest_path"] for item in test_paths.itervalues()]
if not force and not should_download(logger, manifest_paths):
return True
commits = commits_func()
url = url_func(logger, commits)
if not url:
logger.warning("No generated manifest found")
return False
logger.info("Downloading manifest from %s" % url)
try:
req = get(logger, url)
except Exception:
logger.warning("Downloading pregenerated manifest failed")
return False
if req.status_code != 200:
logger.warning("Downloading pregenerated manifest failed; got"
"HTTP status %d" % req.status_code)
return False
tar = tarfile.open(mode="r:gz", fileobj=StringIO(req.content))
for paths in test_paths.itervalues():
try:
member = tar.getmember(paths["manifest_rel_path"].replace(os.path.sep, "/"))
except KeyError:
logger.warning("Failed to find downloaded manifest %s" % paths["manifest_rel_path"])
else:
try:
logger.debug("Unpacking %s to %s" % (member.name, paths["manifest_path"]))
src = tar.extractfile(member)
with open(paths["manifest_path"], "w") as dest:
dest.write(src.read())
src.close()
except IOError:
import traceback
logger.warning("Failed to decompress %s:\n%s" % (paths["manifest_rel_path"], traceback.format_exc()))
return False
os.utime(paths["manifest_path"], None)
return True
def download_from_taskcluster(logger, repo_root, test_paths, force=False):
return download_manifest(logger,
test_paths,
lambda: get_commits(logger, repo_root),
taskcluster_url,
force)
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