Python models.Variable類代碼示例

def variables(args):

    if args.get:
        try:
            var = Variable.get(args.get,
                               deserialize_json=args.json,
                               default_var=args.default)
            print(var)
        except ValueError as e:
            print(e)
    if args.delete:
        session = settings.Session()
        session.query(Variable).filter_by(key=args.delete).delete()
        session.commit()
        session.close()
    if args.set:
        Variable.set(args.set[0], args.set[1])
    # Work around 'import' as a reserved keyword
    imp = getattr(args, 'import')
    if imp:
        if os.path.exists(imp):
            import_helper(imp)
        else:
            print("Missing variables file.")
    if args.export:
        export_helper(args.export)
    if not (args.set or args.get or imp or args.export or args.delete):
        # list all variables
        session = settings.Session()
        vars = session.query(Variable)
        msg = "\n".join(var.key for var in vars)
        print(msg)

    def test_var_with_encryption_rotate_fernet_key(self, mock_get):
        """
        Tests rotating encrypted variables.
        """
        key1 = Fernet.generate_key()
        key2 = Fernet.generate_key()

        mock_get.return_value = key1.decode()
        Variable.set('key', 'value')
        session = settings.Session()
        test_var = session.query(Variable).filter(Variable.key == 'key').one()
        self.assertTrue(test_var.is_encrypted)
        self.assertEqual(test_var.val, 'value')
        self.assertEqual(Fernet(key1).decrypt(test_var._val.encode()), b'value')

        # Test decrypt of old value with new key
        mock_get.return_value = ','.join([key2.decode(), key1.decode()])
        crypto._fernet = None
        self.assertEqual(test_var.val, 'value')

        # Test decrypt of new value with new key
        test_var.rotate_fernet_key()
        self.assertTrue(test_var.is_encrypted)
        self.assertEqual(test_var.val, 'value')
        self.assertEqual(Fernet(key2).decrypt(test_var._val.encode()), b'value')

 def __call__(self):
     # read the configuration out of S3
     with open(local_cfg_file_location) as data_file:    
         config = json.load(data_file)
     # setup the environment variables
     for var in config['variables']:
         Variable.set(var['name'],var['value'])

 def test_variable_with_encryption(self, mock_get):
     """
     Test variables with encryption
     """
     mock_get.return_value = Fernet.generate_key().decode()
     Variable.set('key', 'value')
     session = settings.Session()
     test_var = session.query(Variable).filter(Variable.key == 'key').one()
     self.assertTrue(test_var.is_encrypted)
     self.assertEqual(test_var.val, 'value')

 def test_variable_no_encryption(self, mock_get):
     """
     Test variables without encryption
     """
     mock_get.return_value = ''
     Variable.set('key', 'value')
     session = settings.Session()
     test_var = session.query(Variable).filter(Variable.key == 'key').one()
     self.assertFalse(test_var.is_encrypted)
     self.assertEqual(test_var.val, 'value')

def variables(args):
    if args.get:
        try:
            var = Variable.get(args.get, deserialize_json=args.json, default_var=args.default)
            print(var)
        except ValueError as e:
            print(e)
    if args.set:
        Variable.set(args.set[0], args.set[1])
    if not args.set and not args.get:
        # list all variables
        session = settings.Session()
        vars = session.query(Variable)
        msg = "\n".join(var.key for var in vars)
        print(msg)

  def MonthlyGenerateTestArgs(**kwargs):

    """Loads the configuration that will be used for this Iteration."""
    conf = kwargs['dag_run'].conf
    if conf is None:
      conf = dict()

    # If version is overriden then we should use it otherwise we use it's
    # default or monthly value.
    version = conf.get('VERSION') or istio_common_dag.GetVariableOrDefault('monthly-version', None)
    if not version or version == 'INVALID':
      raise ValueError('version needs to be provided')
    Variable.set('monthly-version', 'INVALID')

    #GCS_MONTHLY_STAGE_PATH is of the form ='prerelease/{version}'
    gcs_path = 'prerelease/%s' % (version)

    branch = conf.get('BRANCH') or istio_common_dag.GetVariableOrDefault('monthly-branch', None)
    if not branch or branch == 'INVALID':
      raise ValueError('branch needs to be provided')
    Variable.set('monthly-branch', 'INVALID')
    mfest_commit = conf.get('MFEST_COMMIT') or branch

    default_conf = environment_config.GetDefaultAirflowConfig(
        branch=branch,
        gcs_path=gcs_path,
        mfest_commit=mfest_commit,
        pipeline_type='monthly',
        verify_consistency='true',
        version=version)

    config_settings = dict()
    for name in default_conf.iterkeys():
      config_settings[name] = conf.get(name) or default_conf[name]

    # These are the extra params that are passed to the dags for monthly release
    monthly_conf = dict()
    monthly_conf['DOCKER_HUB'              ] = 'istio'
    monthly_conf['GCR_RELEASE_DEST'        ] = 'istio-io'
    monthly_conf['GCS_GITHUB_PATH'         ] = 'istio-secrets/github.txt.enc'
    monthly_conf['RELEASE_PROJECT_ID'      ] = 'istio-io'
    # GCS_MONTHLY_RELEASE_PATH is of the form  'istio-release/releases/{version}'
    monthly_conf['GCS_MONTHLY_RELEASE_PATH'] = 'istio-release/releases/%s' % (version)
    for name in monthly_conf.iterkeys():
      config_settings[name] = conf.get(name) or monthly_conf[name]

    testMonthlyConfigSettings(config_settings)
    return config_settings

def set_sms(*args, **context):
    group = Variable.get('group')
    if group == 'night_shift':
        context['task_instance'].xcom_push('recipient', '0011223344')
        context['task_instance'].xcom_push('message', 'night airflow message')
    else:
        context['task_instance'].xcom_push('recipient', '0011223344')
        context['task_instance'].xcom_push('message', 'day airflow message')

def import_helper(filepath):
    with open(filepath, 'r') as varfile:
        var = varfile.read()

    try:
        d = json.loads(var)
    except Exception:
        print("Invalid variables file.")
    else:
        try:
            n = 0
            for k, v in d.items():
                if isinstance(v, dict):
                    Variable.set(k, v, serialize_json=True)
                else:
                    Variable.set(k, v)
                n += 1
        except Exception:
            pass
        finally:
            print("{} of {} variables successfully updated.".format(n, len(d)))

    def failed(self, context):
        self.conf = context["conf"]
        self.task = context["task"]
        self.execution_date = context["execution_date"]
        self.dag = context["dag"]
        self.errors = SlackAPIPostOperator(
            task_id='task_failed',
            token=Variable.get('slack_token'),
            channel='C1SRU2R33',
            text="Your DAG has encountered an error, please follow the link to view the log details:  " + "http://localhost:8080/admin/airflow/log?" + "task_id=" + task.task_id + "&" +\
            "execution_date=" + execution_date.isoformat() + "&" + "dag_id=" + dag.dag_id,
            dag=pipeline
        )

        errors.execute()

def ReportDailySuccessful(task_instance, **kwargs):
  date = kwargs['execution_date']
  latest_run = float(Variable.get('latest_daily_timestamp'))

  timestamp = time.mktime(date.timetuple())
  logging.info('Current run\'s timestamp: %s \n'
               'latest_daily\'s timestamp: %s', timestamp, latest_run)
  if timestamp >= latest_run:
    Variable.set('latest_daily_timestamp', timestamp)
    run_sha = task_instance.xcom_pull(task_ids='get_git_commit')
    latest_version = GetSettingPython(task_instance, 'VERSION')
    logging.info('setting latest green daily to: %s', run_sha)
    Variable.set('latest_sha', run_sha)
    Variable.set('latest_daily', latest_version)
    logging.info('latest_sha test to %s', run_sha)

def ReportMonthlySuccessful(task_instance, **kwargs):
  del kwargs
  version = istio_common_dag.GetSettingPython(task_instance, 'VERSION')
  try:
    match = re.match(r'([0-9])\.([0-9])\.([0-9]).*', version)
    major, minor, patch = match.group(1), match.group(2), match.group(3)
    Variable.set('major_version', major)
    Variable.set('released_version_minor', minor)
    Variable.set('released_version_patch', patch)
  except (IndexError, AttributeError):
    logging.error('Could not extract released version infomation. \n'
                  'Please set airflow version Variables manually.'
                  'After you are done hit Mark Success.')

        def wrapped(context):
            """ping error in slack on failure and provide link to the log"""
            conf = context["conf"]
            task = context["task"]
            execution_date = context["execution_date"]
            dag = context["dag"]
            base_url = conf.get('webserver', 'base_url')

            # Get the ID of the target slack channel
            slack_token = Variable.get(slack_token_variable)
            sc = SlackClient(slack_token)

            response = sc.api_call('channels.list')
            for channel in response['channels']:
                if channel['name'].lower() == channel_name.lower():
                    break
            else:
                raise AirflowException('No channel named {} found.'.format(channel_name))

            # Construct a slack operator to send the message off.
            notifier = cls(
                task_id='task_failed',
                token=slack_token,
                channel=channel['id'],
                text=(
                    "Your DAG has encountered an error, please follow the link "
                    "to view the log details:  "
                    "{}/admin/airflow/log?"
                        "task_id={}&"
                        "dag_id={}&"
                        "execution_date={}"
                    ).format(base_url, task.task_id, dag.dag_id,
                             execution_date.isoformat()),
                dag=dag,
            )
            notifier.execute()

def set_mail(*args, **context):
    group = Variable.get('group')
    if group == 'night_shift':
        context['task_instance'].xcom_push(key='recipient', value='[email protected]')
    else:
        context['task_instance'].xcom_push(key='recipient', value='[email protected]')

  def GenerateTestArgs(**kwargs):
    """Loads the configuration that will be used for this Iteration."""
    conf = kwargs['dag_run'].conf
    if conf is None:
      conf = dict()

    """ Airflow gives the execution date when the job is supposed to be run,
        however we dont backfill and only need to run one build therefore use
        the current date instead of the date that is passed in """
#    date = kwargs['execution_date']
    date = datetime.datetime.now()

    timestamp = time.mktime(date.timetuple())

    # Monthly releases started in Nov 2017 with 0.3.0, so minor is # of months
    # from Aug 2017.
    minor_version = (date.year - 2017) * 12 + (date.month - 1) - 7
    major_version = AirflowGetVariableOrBaseCase('major_version', 0)
    # This code gets information about the latest released version so we know
    # What version number to use for this round.
    r_minor = int(AirflowGetVariableOrBaseCase('released_version_minor', 0))
    r_patch = int(AirflowGetVariableOrBaseCase('released_version_patch', 0))
    # If  we have already released a monthy for this mounth then bump
    # The patch number for the remander of the month.
    if r_minor == minor_version:
      patch = r_patch + 1
    else:
      patch = 0
    # If version is overriden then we should use it otherwise we use it's
    # default or monthly value.
    version = conf.get('VERSION')
    if monthly and not version:
      version = '{}.{}.{}'.format(major_version, minor_version, patch)

    default_conf = environment_config.get_airflow_config(
        version,
        timestamp,
        major=major_version,
        minor=minor_version,
        patch=patch,
        date=date.strftime('%Y%m%d'),
        rc=date.strftime('%H-%M'))
    config_settings = dict(VERSION=default_conf['VERSION'])
    config_settings_name = [
        'PROJECT_ID',
        'MFEST_URL',
        'MFEST_FILE',
        'GCS_STAGING_BUCKET',
        'SVC_ACCT',
        'GITHUB_ORG',
        'GITHUB_REPO',
        'GCS_GITHUB_PATH',
        'TOKEN_FILE',
        'GCR_STAGING_DEST',
        'GCR_RELEASE_DEST',
        'GCS_MONTHLY_RELEASE_PATH',
        'DOCKER_HUB',
        'GCS_BUILD_BUCKET',
        'RELEASE_PROJECT_ID',
    ]

    for name in config_settings_name:
      config_settings[name] = conf.get(name) or default_conf[name]

    if monthly:
      config_settings['MFEST_COMMIT'] = conf.get(
          'MFEST_COMMIT') or Variable.get('latest_sha')
      gcs_path = conf.get('GCS_MONTHLY_STAGE_PATH')
      if not gcs_path:
        gcs_path = default_conf['GCS_MONTHLY_STAGE_PATH']
    else:
      config_settings['MFEST_COMMIT'] = conf.get(
          'MFEST_COMMIT') or default_conf['MFEST_COMMIT']
      gcs_path = conf.get('GCS_DAILY_PATH') or default_conf['GCS_DAILY_PATH']

    config_settings['GCS_STAGING_PATH'] = gcs_path
    config_settings['GCS_BUILD_PATH'] = '{}/{}'.format(
        config_settings['GCS_BUILD_BUCKET'], gcs_path)
    config_settings['GCS_RELEASE_TOOLS_PATH'] = '{}/release-tools/{}'.format(
        config_settings['GCS_BUILD_BUCKET'], gcs_path)
    config_settings['GCS_FULL_STAGING_PATH'] = '{}/{}'.format(
        config_settings['GCS_STAGING_BUCKET'], gcs_path)
    config_settings['ISTIO_REPO'] = 'https://github.com/{}/{}.git'.format(
        config_settings['GITHUB_ORG'], config_settings['GITHUB_REPO'])

    return config_settings