| # Copyright (c) 2012 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from distutils import version |
| import httplib |
| import json |
| import logging |
| import urllib2 |
| import HTMLParser |
| import cStringIO |
| import re |
| import sys |
| |
| from autotest_lib.client.common_lib import global_config |
| from autotest_lib.client.common_lib import utils |
| from autotest_lib.client.common_lib.cros import retry |
| from autotest_lib.client.bin import utils as site_utils |
| from autotest_lib.site_utils.graphite import stats |
| # TODO(cmasone): redo this class using requests module; http://crosbug.com/30107 |
| |
| |
| CONFIG = global_config.global_config |
| # This file is generated at build time and specifies, per suite and per test, |
| # the DEPENDENCIES list specified in each control file. It's a dict of dicts: |
| # {'bvt': {'/path/to/autotest/control/site_tests/test1/control': ['dep1']} |
| # 'suite': {'/path/to/autotest/control/site_tests/test2/control': ['dep2']} |
| # 'power': {'/path/to/autotest/control/site_tests/test1/control': ['dep1'], |
| # '/path/to/autotest/control/site_tests/test3/control': ['dep3']} |
| # } |
| DEPENDENCIES_FILE = 'test_suites/dependency_info' |
| # Number of seconds for caller to poll devserver's is_staged call to check if |
| # artifacts are staged. |
| _ARTIFACT_STAGE_POLLING_INTERVAL = 5 |
| # Artifacts that should be staged when client calls devserver RPC to stage an |
| # image. |
| _ARTIFACTS_TO_BE_STAGED_FOR_IMAGE = 'full_payload,test_suites,stateful' |
| # Artifacts that should be staged when client calls devserver RPC to stage an |
| # image with autotest artifact. |
| _ARTIFACTS_TO_BE_STAGED_FOR_IMAGE_WITH_AUTOTEST = ('full_payload,test_suites,' |
| 'autotest,stateful') |
| |
| |
| class MarkupStripper(HTMLParser.HTMLParser): |
| """HTML parser that strips HTML tags, coded characters like & |
| |
| Works by, basically, not doing anything for any tags, and only recording |
| the content of text nodes in an internal data structure. |
| """ |
| def __init__(self): |
| self.reset() |
| self.fed = [] |
| |
| |
| def handle_data(self, d): |
| """Consume content of text nodes, store it away.""" |
| self.fed.append(d) |
| |
| |
| def get_data(self): |
| """Concatenate and return all stored data.""" |
| return ''.join(self.fed) |
| |
| |
| def _get_image_storage_server(): |
| return CONFIG.get_config_value('CROS', 'image_storage_server', type=str) |
| |
| |
| def _get_canary_channel_server(): |
| """ |
| Get the url of the canary-channel server, |
| eg: gsutil://chromeos-releases/canary-channel/<board>/<release> |
| |
| @return: The url to the canary channel server. |
| """ |
| return CONFIG.get_config_value('CROS', 'canary_channel_server', type=str) |
| |
| |
| def _get_storage_server_for_artifacts(artifacts=None): |
| """Gets the appropriate storage server for the given artifacts. |
| |
| @param artifacts: A list of artifacts we need to stage. |
| @return: The address of the storage server that has these artifacts. |
| The default image storage server if no artifacts are specified. |
| """ |
| factory_artifact = global_config.global_config.get_config_value( |
| 'CROS', 'factory_artifact', type=str, default='') |
| if artifacts and factory_artifact and factory_artifact in artifacts: |
| return _get_canary_channel_server() |
| return _get_image_storage_server() |
| |
| |
| def _get_dev_server_list(): |
| return CONFIG.get_config_value('CROS', 'dev_server', type=list, default=[]) |
| |
| |
| def _get_crash_server_list(): |
| return CONFIG.get_config_value('CROS', 'crash_server', type=list, |
| default=[]) |
| |
| |
| def remote_devserver_call(timeout_min=30): |
| """A decorator to use with remote devserver calls. |
| |
| This decorator converts urllib2.HTTPErrors into DevServerExceptions with |
| any embedded error info converted into plain text. |
| The method retries on urllib2.URLError to avoid devserver flakiness. |
| """ |
| #pylint: disable=C0111 |
| def inner_decorator(method): |
| |
| @retry.retry(urllib2.URLError, timeout_min=timeout_min) |
| def wrapper(*args, **kwargs): |
| """This wrapper actually catches the HTTPError.""" |
| try: |
| return method(*args, **kwargs) |
| except urllib2.HTTPError as e: |
| error_markup = e.read() |
| strip = MarkupStripper() |
| try: |
| strip.feed(error_markup.decode('utf_32')) |
| except UnicodeDecodeError: |
| strip.feed(error_markup) |
| raise DevServerException(strip.get_data()) |
| |
| return wrapper |
| |
| return inner_decorator |
| |
| |
| class DevServerException(Exception): |
| """Raised when the dev server returns a non-200 HTTP response.""" |
| pass |
| |
| |
| class DevServer(object): |
| """Base class for all DevServer-like server stubs. |
| |
| This is the base class for interacting with all Dev Server-like servers. |
| A caller should instantiate a sub-class of DevServer with: |
| |
| host = SubClassServer.resolve(build) |
| server = SubClassServer(host) |
| """ |
| _MIN_FREE_DISK_SPACE_GB = 20 |
| |
| def __init__(self, devserver): |
| self._devserver = devserver |
| |
| |
| def url(self): |
| """Returns the url for this devserver.""" |
| return self._devserver |
| |
| |
| @staticmethod |
| def devserver_healthy(devserver, timeout_min=0.1): |
| """Returns True if the |devserver| is healthy to stage build. |
| |
| @param devserver: url of the devserver. |
| @param timeout_min: How long to wait in minutes before deciding the |
| the devserver is not up (float). |
| """ |
| server_name = re.sub(r':\d+$', '', devserver.lstrip('http://')) |
| # statsd treats |.| as path separator. |
| server_name = server_name.replace('.', '_') |
| call = DevServer._build_call(devserver, 'check_health') |
| |
| @remote_devserver_call(timeout_min=timeout_min) |
| def make_call(): |
| """Inner method that makes the call.""" |
| return utils.urlopen_socket_timeout(call, |
| timeout=timeout_min * 60).read() |
| |
| try: |
| result_dict = json.load(cStringIO.StringIO(make_call())) |
| free_disk = result_dict['free_disk'] |
| stats.Gauge(server_name).send('free_disk', free_disk) |
| |
| skip_devserver_health_check = CONFIG.get_config_value('CROS', |
| 'skip_devserver_health_check', |
| type=bool) |
| if skip_devserver_health_check: |
| logging.debug('devserver health check is skipped.') |
| elif (free_disk < DevServer._MIN_FREE_DISK_SPACE_GB): |
| logging.error('Devserver check_health failed. Free disk space ' |
| 'is low. Only %dGB is available.', free_disk) |
| stats.Counter(server_name + |
| '.devserver_not_healthy').increment() |
| return False |
| |
| # This counter indicates the load of a devserver. By comparing the |
| # value of this counter for all devservers, we can evaluate the |
| # load balancing across all devservers. |
| stats.Counter(server_name + '.devserver_healthy').increment() |
| return True |
| except Exception as e: |
| logging.error('Devserver call failed: "%s", timeout: %s seconds,' |
| ' Error: %s', call, timeout_min * 60, e) |
| stats.Counter(server_name + '.devserver_not_healthy').increment() |
| return False |
| |
| |
| @staticmethod |
| def _build_call(host, method, **kwargs): |
| """Build a URL to |host| that calls |method|, passing |kwargs|. |
| |
| Builds a URL that calls |method| on the dev server defined by |host|, |
| passing a set of key/value pairs built from the dict |kwargs|. |
| |
| @param host: a string that is the host basename e.g. http://server:90. |
| @param method: the dev server method to call. |
| @param kwargs: a dict mapping arg names to arg values. |
| @return the URL string. |
| """ |
| argstr = '&'.join(map(lambda x: "%s=%s" % x, kwargs.iteritems())) |
| return "%(host)s/%(method)s?%(argstr)s" % dict( |
| host=host, method=method, argstr=argstr) |
| |
| |
| def build_call(self, method, **kwargs): |
| """Builds a devserver RPC string that can be invoked using urllib.open. |
| |
| @param method: remote devserver method to call. |
| """ |
| return self._build_call(self._devserver, method, **kwargs) |
| |
| |
| @classmethod |
| def build_all_calls(cls, method, **kwargs): |
| """Builds a list of URLs that makes RPC calls on all devservers. |
| |
| Build a URL that calls |method| on the dev server, passing a set |
| of key/value pairs built from the dict |kwargs|. |
| |
| @param method: the dev server method to call. |
| @param kwargs: a dict mapping arg names to arg values |
| @return the URL string |
| """ |
| calls = [] |
| # Note we use cls.servers as servers is class specific. |
| for server in cls.servers(): |
| if cls.devserver_healthy(server): |
| calls.append(cls._build_call(server, method, **kwargs)) |
| |
| return calls |
| |
| |
| @staticmethod |
| def servers(): |
| """Returns a list of servers that can serve as this type of server.""" |
| raise NotImplementedError() |
| |
| |
| @classmethod |
| def resolve(cls, build): |
| """"Resolves a build to a devserver instance. |
| |
| @param build: The build (e.g. x86-mario-release/R18-1586.0.0-a1-b1514). |
| """ |
| devservers = cls.servers() |
| while devservers: |
| hash_index = hash(build) % len(devservers) |
| devserver = devservers.pop(hash_index) |
| if cls.devserver_healthy(devserver): |
| return cls(devserver) |
| else: |
| logging.error('All devservers are currently down!!!') |
| raise DevServerException('All devservers are currently down!!!') |
| |
| |
| class CrashServer(DevServer): |
| """Class of DevServer that symbolicates crash dumps.""" |
| @staticmethod |
| def servers(): |
| return _get_crash_server_list() |
| |
| |
| @remote_devserver_call() |
| def symbolicate_dump(self, minidump_path, build): |
| """Ask the devserver to symbolicate the dump at minidump_path. |
| |
| Stage the debug symbols for |build| and, if that works, ask the |
| devserver to symbolicate the dump at |minidump_path|. |
| |
| @param minidump_path: the on-disk path of the minidump. |
| @param build: The build (e.g. x86-mario-release/R18-1586.0.0-a1-b1514) |
| whose debug symbols are needed for symbolication. |
| @return The contents of the stack trace |
| @raise DevServerException upon any return code that's not HTTP OK. |
| """ |
| try: |
| import requests |
| except ImportError: |
| logging.warning("Can't 'import requests' to connect to dev server.") |
| return '' |
| |
| stats.Counter('CrashServer.symbolicate_dump').increment() |
| timer = stats.Timer('CrashServer.symbolicate_dump') |
| timer.start() |
| # Symbolicate minidump. |
| call = self.build_call('symbolicate_dump', |
| archive_url=_get_image_storage_server() + build) |
| request = requests.post( |
| call, files={'minidump': open(minidump_path, 'rb')}) |
| if request.status_code == requests.codes.OK: |
| timer.stop() |
| return request.text |
| |
| error_fd = cStringIO.StringIO(request.text) |
| raise urllib2.HTTPError( |
| call, request.status_code, request.text, request.headers, |
| error_fd) |
| |
| |
| class ImageServer(DevServer): |
| """Class for DevServer that handles image-related RPCs. |
| |
| The calls to devserver to stage artifacts, including stage and download, are |
| made in async mode. That is, when caller makes an RPC |stage| to request |
| devserver to stage certain artifacts, devserver handles the call and starts |
| staging artifacts in a new thread, and return |Success| without waiting for |
| staging being completed. When caller receives message |Success|, it polls |
| devserver's is_staged call until all artifacts are staged. |
| Such mechanism is designed to prevent cherrypy threads in devserver being |
| running out, as staging artifacts might take long time, and cherrypy starts |
| with a fixed number of threads that handle devserver rpc. |
| """ |
| @staticmethod |
| def servers(): |
| return _get_dev_server_list() |
| |
| |
| @classmethod |
| def devserver_url_for_servo(cls, board): |
| """Returns the devserver url for use with servo recovery. |
| |
| @param board: The board (e.g. 'x86-mario'). |
| """ |
| # Ideally, for load balancing we'd select the server based |
| # on the board. For now, to simplify manual steps on the |
| # server side, we ignore the board type and hard-code the |
| # server as first in the list. |
| # |
| # TODO(jrbarnette) Once we have automated selection of the |
| # build for recovery, we should revisit this. |
| url_pattern = CONFIG.get_config_value('CROS', |
| 'servo_url_pattern', |
| type=str) |
| return url_pattern % (cls.servers()[0], board) |
| |
| |
| class ArtifactUrls(object): |
| """A container for URLs of staged artifacts. |
| |
| Attributes: |
| full_payload: URL for downloading a staged full release update |
| mton_payload: URL for downloading a staged M-to-N release update |
| nton_payload: URL for downloading a staged N-to-N release update |
| |
| """ |
| def __init__(self, full_payload=None, mton_payload=None, |
| nton_payload=None): |
| self.full_payload = full_payload |
| self.mton_payload = mton_payload |
| self.nton_payload = nton_payload |
| |
| |
| def wait_for_artifacts_staged(self, archive_url, artifacts='', files=''): |
| """Polling devserver.is_staged until all artifacts are staged. |
| |
| @param archive_url: Google Storage URL for the build. |
| @param artifacts: Comma separated list of artifacts to download. |
| @param files: Comma separated list of files to download. |
| @return: True if all artifacts are staged in devserver. |
| """ |
| call = self.build_call('is_staged', |
| archive_url=archive_url, |
| artifacts=artifacts, |
| files=files) |
| |
| def all_staged(): |
| """Call devserver.is_staged rpc to check if all files are staged. |
| |
| @return: True if all artifacts are staged in devserver. False |
| otherwise. |
| @rasies DevServerException, the exception is a wrapper of all |
| exceptions that were raised when devserver tried to download |
| the artifacts. devserver raises an HTTPError when an |
| exception was raised in the code. Such exception should be |
| re-raised here to stop the caller from waiting. If the call |
| to devserver failed for connection issue, a URLError |
| exception is raised, and caller should retry the call to |
| avoid such network flakiness. |
| |
| """ |
| try: |
| return urllib2.urlopen(call).read() == 'True' |
| except urllib2.HTTPError as e: |
| error_markup = e.read() |
| strip = MarkupStripper() |
| try: |
| strip.feed(error_markup.decode('utf_32')) |
| except UnicodeDecodeError: |
| strip.feed(error_markup) |
| raise DevServerException(strip.get_data()) |
| except urllib2.URLError as e: |
| # Could be connection issue, retry it. |
| # For example: <urlopen error [Errno 111] Connection refused> |
| return False |
| |
| site_utils.poll_for_condition( |
| all_staged, |
| exception=site_utils.TimeoutError(), |
| timeout=sys.maxint, |
| sleep_interval=_ARTIFACT_STAGE_POLLING_INTERVAL) |
| return True |
| |
| |
| def call_and_wait(self, call_name, archive_url, artifacts, files, |
| error_message, expected_response='Success'): |
| """Helper method to make a urlopen call, and wait for artifacts staged. |
| |
| @param call_name: name of devserver rpc call. |
| @param archive_url: Google Storage URL for the build.. |
| @param artifacts: Comma separated list of artifacts to download. |
| @param files: Comma separated list of files to download. |
| @param expected_response: Expected response from rpc, default to |
| |Success|. If it's set to None, do not compare |
| the actual response. Any response is consider |
| to be good. |
| @param error_message: Error message to be thrown if response does not |
| match expected_response. |
| |
| @return: The response from rpc. |
| @raise DevServerException upon any return code that's expected_response. |
| |
| """ |
| call = self.build_call(call_name, |
| archive_url=archive_url, |
| artifacts=artifacts, |
| files=files, |
| async=True) |
| try: |
| response = urllib2.urlopen(call).read() |
| except httplib.BadStatusLine as e: |
| logging.error(e) |
| raise DevServerException('Received Bad Status line, Devserver %s ' |
| 'might have gone down while handling ' |
| 'the call: %s' % (self.url(), call)) |
| |
| if expected_response and not response == expected_response: |
| raise DevServerException(error_message) |
| |
| self.wait_for_artifacts_staged(archive_url, artifacts, files) |
| return response |
| |
| |
| @remote_devserver_call() |
| def stage_artifacts(self, image, artifacts=None, files=None, |
| archive_url=None): |
| """Tell the devserver to download and stage |artifacts| from |image|. |
| |
| This is the main call point for staging any specific artifacts for a |
| given build. To see the list of artifacts one can stage see: |
| |
| ~src/platfrom/dev/artifact_info.py. |
| |
| This is maintained along with the actual devserver code. |
| |
| @param image: the image to fetch and stage. |
| @param artifacts: A list of artifacts. |
| @param files: A list of files to stage. |
| @param archive_url: Optional parameter that has the archive_url to stage |
| this artifact from. Default is specified in autotest config + |
| image. |
| |
| @raise DevServerException upon any return code that's not HTTP OK. |
| """ |
| assert artifacts or files, 'Must specify something to stage.' |
| if not archive_url: |
| archive_url = (_get_storage_server_for_artifacts(artifacts) + |
| image) |
| |
| artifacts_arg = ','.join(artifacts) if artifacts else '' |
| files_arg = ','.join(files) if files else '' |
| error_message = ("staging %s for %s failed;" |
| "HTTP OK not accompanied by 'Success'." % |
| ('artifacts=%s files=%s ' % (artifacts_arg, files_arg), |
| image)) |
| self.call_and_wait(call_name='stage', |
| archive_url=archive_url, |
| artifacts=artifacts_arg, |
| files=files_arg, |
| error_message=error_message) |
| |
| |
| @remote_devserver_call(timeout_min=0.5) |
| def list_image_dir(self, image): |
| """List the contents of the image stage directory, on the devserver. |
| |
| @param image: The image name, eg: <board>-<branch>/<Milestone>-<build>. |
| |
| @raise DevServerException upon any return code that's not HTTP OK. |
| """ |
| logging.info('Requesting contents from devserver %s for image %s', |
| self.url(), image) |
| archive_url = _get_storage_server_for_artifacts() + image |
| call = self.build_call('list_image_dir', archive_url=archive_url) |
| response = urllib2.urlopen(call) |
| for line in [line.rstrip() for line in response]: |
| logging.info(line) |
| |
| |
| @remote_devserver_call() |
| def trigger_download(self, image, synchronous=True): |
| """Tell the devserver to download and stage |image|. |
| |
| Tells the devserver to fetch |image| from the image storage server |
| named by _get_image_storage_server(). |
| |
| If |synchronous| is True, waits for the entire download to finish |
| staging before returning. Otherwise only the artifacts necessary |
| to start installing images onto DUT's will be staged before returning. |
| A caller can then call finish_download to guarantee the rest of the |
| artifacts have finished staging. |
| |
| @param image: the image to fetch and stage. |
| @param synchronous: if True, waits until all components of the image are |
| staged before returning. |
| |
| @raise DevServerException upon any return code that's not HTTP OK. |
| |
| """ |
| archive_url = _get_image_storage_server() + image |
| artifacts = _ARTIFACTS_TO_BE_STAGED_FOR_IMAGE |
| error_message = ("trigger_download for %s failed;" |
| "HTTP OK not accompanied by 'Success'." % image) |
| response = self.call_and_wait(call_name='stage', |
| archive_url=archive_url, |
| artifacts=artifacts, |
| files='', |
| error_message=error_message) |
| was_successful = response == 'Success' |
| if was_successful and synchronous: |
| self.finish_download(image) |
| |
| |
| @remote_devserver_call() |
| def setup_telemetry(self, build): |
| """Tell the devserver to setup telemetry for this build. |
| |
| The devserver will stage autotest and then extract the required files |
| for telemetry. |
| |
| @param build: the build to setup telemetry for. |
| |
| @returns path on the devserver that telemetry is installed to. |
| """ |
| archive_url = _get_image_storage_server() + build |
| call = self.build_call('setup_telemetry', archive_url=archive_url) |
| try: |
| response = urllib2.urlopen(call).read() |
| except httplib.BadStatusLine as e: |
| logging.error(e) |
| raise DevServerException('Received Bad Status line, Devserver %s ' |
| 'might have gone down while handling ' |
| 'the call: %s' % (self.url(), call)) |
| return response |
| |
| |
| @remote_devserver_call() |
| def finish_download(self, image): |
| """Tell the devserver to finish staging |image|. |
| |
| If trigger_download is called with synchronous=False, it will return |
| before all artifacts have been staged. This method contacts the |
| devserver and blocks until all staging is completed and should be |
| called after a call to trigger_download. |
| |
| @param image: the image to fetch and stage. |
| @raise DevServerException upon any return code that's not HTTP OK. |
| """ |
| archive_url = _get_image_storage_server() + image |
| artifacts = _ARTIFACTS_TO_BE_STAGED_FOR_IMAGE_WITH_AUTOTEST |
| error_message = ("finish_download for %s failed;" |
| "HTTP OK not accompanied by 'Success'." % image) |
| self.call_and_wait(call_name='stage', |
| archive_url=archive_url, |
| artifacts=artifacts, |
| files='', |
| error_message=error_message) |
| |
| |
| def get_update_url(self, image): |
| """Returns the url that should be passed to the updater. |
| |
| @param image: the image that was fetched. |
| """ |
| url_pattern = CONFIG.get_config_value('CROS', 'image_url_pattern', |
| type=str) |
| return (url_pattern % (self.url(), image)) |
| |
| |
| def _get_image_url(self, image): |
| """Returns the url of the directory for this image on the devserver. |
| |
| @param image: the image that was fetched. |
| """ |
| url_pattern = CONFIG.get_config_value('CROS', 'image_url_pattern', |
| type=str) |
| return (url_pattern % (self.url(), image)).replace( |
| 'update', 'static') |
| |
| |
| def get_staged_file_url(self, filename, image): |
| """Returns the url of a staged file for this image on the devserver.""" |
| return '/'.join([self._get_image_url(image), filename]) |
| |
| |
| def get_full_payload_url(self, image): |
| """Returns a URL to a staged full payload. |
| |
| @param image: the image that was fetched. |
| |
| @return A fully qualified URL that can be used for downloading the |
| payload. |
| |
| """ |
| return self._get_image_url(image) + '/update.gz' |
| |
| |
| def get_test_image_url(self, image): |
| """Returns a URL to a staged test image. |
| |
| @param image: the image that was fetched. |
| |
| @return A fully qualified URL that can be used for downloading the |
| image. |
| |
| """ |
| return self._get_image_url(image) + '/chromiumos_test_image.bin' |
| |
| |
| @remote_devserver_call() |
| def list_control_files(self, build, suite_name=''): |
| """Ask the devserver to list all control files for |build|. |
| |
| @param build: The build (e.g. x86-mario-release/R18-1586.0.0-a1-b1514) |
| whose control files the caller wants listed. |
| @param suite_name: The name of the suite for which we require control |
| files. |
| @return None on failure, or a list of control file paths |
| (e.g. server/site_tests/autoupdate/control) |
| @raise DevServerException upon any return code that's not HTTP OK. |
| """ |
| call = self.build_call('controlfiles', build=build, |
| suite_name=suite_name) |
| response = urllib2.urlopen(call) |
| return [line.rstrip() for line in response] |
| |
| |
| @remote_devserver_call() |
| def get_control_file(self, build, control_path): |
| """Ask the devserver for the contents of a control file. |
| |
| @param build: The build (e.g. x86-mario-release/R18-1586.0.0-a1-b1514) |
| whose control file the caller wants to fetch. |
| @param control_path: The file to fetch |
| (e.g. server/site_tests/autoupdate/control) |
| @return The contents of the desired file. |
| @raise DevServerException upon any return code that's not HTTP OK. |
| """ |
| call = self.build_call('controlfiles', build=build, |
| control_path=control_path) |
| return urllib2.urlopen(call).read() |
| |
| |
| @remote_devserver_call() |
| def get_dependencies_file(self, build): |
| """Ask the dev server for the contents of the suite dependencies file. |
| |
| Ask the dev server at |self._dev_server| for the contents of the |
| pre-processed suite dependencies file (at DEPENDENCIES_FILE) |
| for |build|. |
| |
| @param build: The build (e.g. x86-mario-release/R21-2333.0.0) |
| whose dependencies the caller is interested in. |
| @return The contents of the dependencies file, which should eval to |
| a dict of dicts, as per site_utils/suite_preprocessor.py. |
| @raise DevServerException upon any return code that's not HTTP OK. |
| """ |
| call = self.build_call('controlfiles', |
| build=build, control_path=DEPENDENCIES_FILE) |
| return urllib2.urlopen(call).read() |
| |
| |
| @remote_devserver_call() |
| def get_latest_build_in_server(self, target, milestone=''): |
| """Ask the devserver for the latest build for a given target. |
| |
| @param target: The build target, typically a combination of the board |
| and the type of build e.g. x86-mario-release. |
| @param milestone: For latest build set to '', for builds only in a |
| specific milestone set to a str of format Rxx |
| (e.g. R16). Default: ''. Since we are dealing with a |
| webserver sending an empty string, '', ensures that |
| the variable in the URL is ignored as if it was set |
| to None. |
| @return A string of the returned build e.g. R20-2226.0.0. Return None |
| if no build is found in the devserver for given target and |
| milestone. |
| """ |
| call = self.build_call('latestbuild', target=target, |
| milestone=milestone) |
| try: |
| return urllib2.urlopen(call).read() |
| except urllib2.HTTPError: |
| return None |
| |
| |
| @classmethod |
| @remote_devserver_call() |
| def get_latest_build(cls, target, milestone=''): |
| """Ask all the devservers for the latest build for a given target. |
| |
| @param target: The build target, typically a combination of the board |
| and the type of build e.g. x86-mario-release. |
| @param milestone: For latest build set to '', for builds only in a |
| specific milestone set to a str of format Rxx |
| (e.g. R16). Default: ''. Since we are dealing with a |
| webserver sending an empty string, '', ensures that |
| the variable in the URL is ignored as if it was set |
| to None. |
| @return A string of the returned build e.g. R20-2226.0.0. |
| @raise DevServerException upon any return code that's not HTTP OK. |
| """ |
| calls = cls.build_all_calls('latestbuild', target=target, |
| milestone=milestone) |
| latest_builds = [] |
| for call in calls: |
| latest_builds.append(urllib2.urlopen(call).read()) |
| |
| return max(latest_builds, key=version.LooseVersion) |
