Add script to check for clusterfuzz issues.

BUG=443153
LOG=n
NOTRY=true

Review URL: https://codereview.chromium.org/811073002

Cr-Commit-Position: refs/heads/master@{#25876}

tools/push-to-trunk/check_clusterfuzz.py

+#!/usr/bin/env python
+# Copyright 2014 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Script to check for new clusterfuzz issues since the last rolled v8 revision.
+
+Returns a json list with test case IDs if any.
+
+Security considerations: The security key and request data must never be
+written to public logs. Public automated callers of this script should
+suppress stdout and stderr and only process contents of the results_file.
+"""
+
+
+import argparse
+import httplib
+import json
+import os
+import re
+import sys
+import urllib
+import urllib2
+
+
+# Constants to git repos.
+BASE_URL = "https://chromium.googlesource.com"
+DEPS_LOG = BASE_URL + "/chromium/src/+log/master/DEPS?format=JSON"
+
+# Constants for retrieving v8 rolls.
+CRREV = "https://cr-rev.appspot.com/_ah/api/crrev/v1/commit/%s"
+V8_COMMIT_RE = re.compile(
+    r"^Update V8 to version \d+\.\d+\.\d+ \(based on ([a-fA-F0-9]+)\)\..*")
+
+# Constants for the clusterfuzz backend.
+HOSTNAME = "backend-dot-cluster-fuzz.appspot.com"
+
+# Crash patterns.
+V8_INTERNAL_RE = re.compile(r"^v8::internal.*")
+ANY_RE = re.compile(r".*")
+
+# List of all api requests.
+BUG_SPECS = [
+  {
+    "args": {
+      "job_type": "linux_asan_chrome_v8",
+      "reproducible": "True",
+      "open": "True",
+      "bug_information": "",
+    },
+    "crash_state": V8_INTERNAL_RE,
+  },
+  {
+    "args": {
+      "job_type": "linux_asan_d8_dbg",
+      "reproducible": "True",
+      "open": "True",
+      "bug_information": "",
+    },
+    "crash_state": ANY_RE,
+  },
+]
+
+
+def GetRequest(url):
+  url_fh = urllib2.urlopen(url, None, 60)
+  try:
+    return url_fh.read()
+  finally:
+    url_fh.close()
+
+
+def GetLatestV8InChromium():
+  """Returns the commit position number of the latest v8 roll in chromium."""
+
+  # Check currently rolled v8 revision.
+  result = GetRequest(DEPS_LOG)
+  if not result:
+    return None
+
+  # Strip security header and load json.
+  commits = json.loads(result[5:])
+
+  git_revision = None
+  for commit in commits["log"]:
+    # Get latest commit that matches the v8 roll pattern. Ignore cherry-picks.
+    match = re.match(V8_COMMIT_RE, commit["message"])
+    if match:
+      git_revision = match.group(1)
+      break
+  else:
+    return None
+
+  # Get commit position number for v8 revision.
+  result = GetRequest(CRREV % git_revision)
+  if not result:
+    return None
+
+  commit = json.loads(result)
+  assert commit["repo"] == "v8/v8"
+  return commit["number"]
+
+
+def APIRequest(key, **params):
+  """Send a request to the clusterfuzz api.
+
+  Returns a json dict of the response.
+  """
+
+  params["api_key"] = key
+  params = urllib.urlencode(params)
+
+  headers = {"Content-type": "application/x-www-form-urlencoded"}
+
+  try:
+    conn = httplib.HTTPSConnection(HOSTNAME)
+    conn.request("POST", "/_api/", params, headers)
+
+    response = conn.getresponse()
+
+    # Never leak "data" into public logs.
+    data = response.read()
+  except:
+    raise Exception("ERROR: Connection problem.")
+
+  try:
+    return json.loads(data)
+  except:
+    raise Exception("ERROR: Could not read response. Is your key valid?")
+
+  return None
+
+
+def Main():
+  parser = argparse.ArgumentParser()
+  parser.add_argument("-k", "--key-file", required=True,
+                      help="A file with the clusterfuzz api key.")
+  parser.add_argument("-r", "--results-file",
+                      help="A file to write the results to.")
+  options = parser.parse_args()
+
+  # Get api key. The key's content must never be logged.
+  assert options.key_file
+  with open(options.key_file) as f:
+    key = f.read().strip()
+  assert key
+
+  revision_number = GetLatestV8InChromium()
+
+  results = []
+  for spec in BUG_SPECS:
+    args = dict(spec["args"])
+    # Use incremented revision as we're interested in all revision greater than
+    # what's currently rolled into chromium.
+    if revision_number:
+      args["revision_greater_or_equal"] = str(int(revision_number) + 1)
+
+    # Never print issue details in public logs.
+    issues = APIRequest(key, **args)
+    assert issues is not None
+    for issue in issues:
+      if re.match(spec["crash_state"], issue["crash_state"]):
+        results.append(issue["id"])
+
+  if options.results_file:
+    with open(options.results_file, "w") as f:
+      f.write(json.dumps(results))
+  else:
+    print results
+
+
+if __name__ == "__main__":
+  sys.exit(Main())