airflow/models/dagbag.py
def collect_dags(
            self,
            dag_folder=None,
            only_if_updated=True,
            include_examples=configuration.conf.getboolean('core', 'LOAD_EXAMPLES'),
            safe_mode=configuration.conf.getboolean('core', 'DAG_DISCOVERY_SAFE_MODE')):
        """
        Given a file path or a folder, this method looks for python modules,
        imports them and adds them to the dagbag collection.

        Note that if a ``.airflowignore`` file is found while processing
        the directory, it will behave much like a ``.gitignore``,
        ignoring files that match any of the regex patterns specified
        in the file.

        **Note**: The patterns in .airflowignore are treated as
        un-anchored regexes, not shell-like glob patterns.
        """
        start_dttm = timezone.utcnow()
        dag_folder = dag_folder or self.dag_folder

        # Used to store stats around DagBag processing
        stats = []
        FileLoadStat = namedtuple(
            'FileLoadStat', "file duration dag_num task_num dags")

        dag_folder = correct_maybe_zipped(dag_folder)

        for filepath in list_py_file_paths(dag_folder, safe_mode=safe_mode,
                                           include_examples=include_examples):
            try:
                ts = timezone.utcnow()
                found_dags = self.process_file(
                    filepath, only_if_updated=only_if_updated,
                    safe_mode=safe_mode)

                td = timezone.utcnow() - ts
                td = td.total_seconds() + (
                    float(td.microseconds) / 1000000)
                stats.append(FileLoadStat(
                    filepath.replace(dag_folder, ''),
                    td,
                    len(found_dags),
                    sum([len(dag.tasks) for dag in found_dags]),
                    str([dag.dag_id for dag in found_dags]),
                ))
            except Exception as e:
                self.log.exception(e)
        Stats.gauge(
            'collect_dags', (timezone.utcnow() - start_dttm).total_seconds(), 1)
        Stats.gauge(
            'dagbag_size', len(self.dags), 1)
        Stats.gauge(
            'dagbag_import_errors', len(self.import_errors), 1)
        self.dagbag_stats = sorted(
            stats, key=lambda x: x.duration, reverse=True)
def collect_dags(
            self,
            dag_folder=None,
            only_if_updated=True,
            include_examples=configuration.conf.getboolean('core', 'LOAD_EXAMPLES'),
            safe_mode=configuration.conf.getboolean('core', 'DAG_DISCOVERY_SAFE_MODE')):
        start_dttm = timezone.utcnow()
        dag_folder = dag_folder or self.dag_folder

        # Used to store stats around DagBag processing
        stats = []
        FileLoadStat = namedtuple(
            'FileLoadStat', "file duration dag_num task_num dags")

        dag_folder = correct_maybe_zipped(dag_folder)

        for filepath in list_py_file_paths(dag_folder, safe_mode=safe_mode,
                                           include_examples=include_examples):
            try:
                ts = timezone.utcnow()
                found_dags = self.process_file(
                    filepath, only_if_updated=only_if_updated,
                    safe_mode=safe_mode)

                td = timezone.utcnow() - ts
                td = td.total_seconds() + (
                    float(td.microseconds) / 1000000)
                stats.append(FileLoadStat(
                    filepath.replace(dag_folder, ''),
                    td,
                    len(found_dags),
                    sum([len(dag.tasks) for dag in found_dags]),
                    str([dag.dag_id for dag in found_dags]),
                ))
            except Exception as e:
                self.log.exception(e)
        Stats.gauge(
            'collect_dags', (timezone.utcnow() - start_dttm).total_seconds(), 1)
        Stats.gauge(
            'dagbag_size', len(self.dags), 1)
        Stats.gauge(
            'dagbag_import_errors', len(self.import_errors), 1)
        self.dagbag_stats = sorted(
            stats, key=lambda x: x.duration, reverse=True)
def collect_dags ( self , dag_folder = None , only_if_updated = True , include_examples = configuration . conf . getboolean ( 'core' , 'LOAD_EXAMPLES' ) , safe_mode = configuration . conf . getboolean ( 'core' , 'DAG_DISCOVERY_SAFE_MODE' ) ) : start_dttm = timezone . utcnow ( ) dag_folder = dag_folder or self . dag_folder # Used to store stats around DagBag processing stats = [ ] FileLoadStat = namedtuple ( 'FileLoadStat' , "file duration dag_num task_num dags" ) dag_folder = correct_maybe_zipped ( dag_folder ) for filepath in list_py_file_paths ( dag_folder , safe_mode = safe_mode , include_examples = include_examples ) : try : ts = timezone . utcnow ( ) found_dags = self . process_file ( filepath , only_if_updated = only_if_updated , safe_mode = safe_mode ) td = timezone . utcnow ( ) - ts td = td . total_seconds ( ) + ( float ( td . microseconds ) / 1000000 ) stats . append ( FileLoadStat ( filepath . replace ( dag_folder , '' ) , td , len ( found_dags ) , sum ( [ len ( dag . tasks ) for dag in found_dags ] ) , str ( [ dag . dag_id for dag in found_dags ] ) , ) ) except Exception as e : self . log . exception ( e ) Stats . gauge ( 'collect_dags' , ( timezone . utcnow ( ) - start_dttm ) . total_seconds ( ) , 1 ) Stats . gauge ( 'dagbag_size' , len ( self . dags ) , 1 ) Stats . gauge ( 'dagbag_import_errors' , len ( self . import_errors ) , 1 ) self . dagbag_stats = sorted ( stats , key = lambda x : x . duration , reverse = True )
Given a file path or a folder, this method looks for python modules,
        imports them and adds them to the dagbag collection.

        Note that if a ``.airflowignore`` file is found while processing
        the directory, it will behave much like a ``.gitignore``,
        ignoring files that match any of the regex patterns specified
        in the file.

        **Note**: The patterns in .airflowignore are treated as
        un-anchored regexes, not shell-like glob patterns.
Given a file path or a folder this method looks for python modules imports them and adds them to the dagbag collection .