airflow.providers.google.cloud.hooks.dataflow

This module contains a Google Dataflow Hook.

Module Contents

Classes

DataflowJobStatus

Helper class with Dataflow job statuses.

DataflowJobType

Helper class with Dataflow job types.

DataflowHook

Hook for Google Dataflow.

Functions

process_line_and_extract_dataflow_job_id_callback(...)

Returns callback which triggers function passed as on_new_job_id_callback when Dataflow job_id is found.

Attributes

DEFAULT_DATAFLOW_LOCATION

JOB_ID_PATTERN

T

airflow.providers.google.cloud.hooks.dataflow.DEFAULT_DATAFLOW_LOCATION = us-central1[source]
airflow.providers.google.cloud.hooks.dataflow.JOB_ID_PATTERN[source]
airflow.providers.google.cloud.hooks.dataflow.T[source]
airflow.providers.google.cloud.hooks.dataflow.process_line_and_extract_dataflow_job_id_callback(on_new_job_id_callback)[source]

Returns callback which triggers function passed as on_new_job_id_callback when Dataflow job_id is found. To be used for process_line_callback in BeamCommandRunner

Parameters

on_new_job_id_callback (Optional[Callable[[str], None]]) – Callback called when the job ID is known

class airflow.providers.google.cloud.hooks.dataflow.DataflowJobStatus[source]

Helper class with Dataflow job statuses. Reference: https://cloud.google.com/dataflow/docs/reference/rest/v1b3/projects.jobs#Job.JobState

JOB_STATE_DONE = JOB_STATE_DONE[source]
JOB_STATE_UNKNOWN = JOB_STATE_UNKNOWN[source]
JOB_STATE_STOPPED = JOB_STATE_STOPPED[source]
JOB_STATE_RUNNING = JOB_STATE_RUNNING[source]
JOB_STATE_FAILED = JOB_STATE_FAILED[source]
JOB_STATE_CANCELLED = JOB_STATE_CANCELLED[source]
JOB_STATE_UPDATED = JOB_STATE_UPDATED[source]
JOB_STATE_DRAINING = JOB_STATE_DRAINING[source]
JOB_STATE_DRAINED = JOB_STATE_DRAINED[source]
JOB_STATE_PENDING = JOB_STATE_PENDING[source]
JOB_STATE_CANCELLING = JOB_STATE_CANCELLING[source]
JOB_STATE_QUEUED = JOB_STATE_QUEUED[source]
FAILED_END_STATES[source]
SUCCEEDED_END_STATES[source]
TERMINAL_STATES[source]
AWAITING_STATES[source]
class airflow.providers.google.cloud.hooks.dataflow.DataflowJobType[source]

Helper class with Dataflow job types.

JOB_TYPE_UNKNOWN = JOB_TYPE_UNKNOWN[source]
JOB_TYPE_BATCH = JOB_TYPE_BATCH[source]
JOB_TYPE_STREAMING = JOB_TYPE_STREAMING[source]
class airflow.providers.google.cloud.hooks.dataflow.DataflowHook(gcp_conn_id='google_cloud_default', delegate_to=None, poll_sleep=10, impersonation_chain=None, drain_pipeline=False, cancel_timeout=5 * 60, wait_until_finished=None)[source]

Bases: airflow.providers.google.common.hooks.base_google.GoogleBaseHook

Hook for Google Dataflow.

All the methods in the hook where project_id is used must be called with keyword arguments rather than positional.

get_conn()[source]

Returns a Google Cloud Dataflow service object.

start_java_dataflow(job_name, variables, jar, project_id, job_class=None, append_job_name=True, multiple_jobs=False, on_new_job_id_callback=None, location=DEFAULT_DATAFLOW_LOCATION)[source]

Starts Dataflow java job.

Parameters

  • job_name (str) – The name of the job.

  • variables (dict) – Variables passed to the job.

  • project_id (str) – Optional, the Google Cloud project ID in which to start a job. If set to None or missing, the default project_id from the Google Cloud connection is used.

  • jar (str) – Name of the jar for the job

  • job_class (Optional[str]) – Name of the java class for the job.

  • append_job_name (bool) – True if unique suffix has to be appended to job name.

  • multiple_jobs (bool) – True if to check for multiple job in dataflow

  • on_new_job_id_callback (Optional[Callable[[str], None]]) – Callback called when the job ID is known.

  • location (str) – Job location.

start_template_dataflow(job_name, variables, parameters, dataflow_template, project_id, append_job_name=True, on_new_job_id_callback=None, on_new_job_callback=None, location=DEFAULT_DATAFLOW_LOCATION, environment=None)[source]

Starts Dataflow template job.

Parameters

  • job_name (str) – The name of the job.

  • variables (dict) –

    Map of job runtime environment options. It will update environment argument if passed.

    See also

    For more information on possible configurations, look at the API documentation https://cloud.google.com/dataflow/pipelines/specifying-exec-params

  • parameters (dict) – Parameters for the template

  • dataflow_template (str) – GCS path to the template.

  • project_id (str) – Optional, the Google Cloud project ID in which to start a job. If set to None or missing, the default project_id from the Google Cloud connection is used.

  • append_job_name (bool) – True if unique suffix has to be appended to job name.

  • on_new_job_id_callback (Optional[Callable[[str], None]]) – (Deprecated) Callback called when the Job is known.

  • on_new_job_callback (Optional[Callable[[dict], None]]) – Callback called when the Job is known.

  • location (str) –

    Job location.

    See also

    For more information on possible configurations, look at the API documentation https://cloud.google.com/dataflow/pipelines/specifying-exec-params

start_flex_template(body, location, project_id, on_new_job_id_callback=None, on_new_job_callback=None)[source]

Starts flex templates with the Dataflow pipeline.

Parameters
Returns

the Job

start_python_dataflow(job_name, variables, dataflow, py_options, project_id, py_interpreter='python3', py_requirements=None, py_system_site_packages=False, append_job_name=True, on_new_job_id_callback=None, location=DEFAULT_DATAFLOW_LOCATION)[source]

Starts Dataflow job.

Parameters

  • job_name (str) – The name of the job.

  • variables (dict) – Variables passed to the job.

  • dataflow (str) – Name of the Dataflow process.

  • py_options (List[str]) – Additional options.

  • project_id (str) – The ID of the GCP project that owns the job. If set to None or missing, the default project_id from the GCP connection is used.

  • py_interpreter (str) – Python version of the beam pipeline. If None, this defaults to the python3. To track python versions supported by beam and related issues check: https://issues.apache.org/jira/browse/BEAM-1251

  • py_requirements (Optional[List[str]]) –

    Additional python package(s) to install. If a value is passed to this parameter, a new virtual environment has been created with additional packages installed.

    You could also install the apache-beam package if it is not installed on your system or you want to use a different version.

  • py_system_site_packages (bool) –

    Whether to include system_site_packages in your virtualenv. See virtualenv documentation for more information.

    This option is only relevant if the py_requirements parameter is not None.

  • append_job_name (bool) – True if unique suffix has to be appended to job name.

  • project_id – Optional, the Google Cloud project ID in which to start a job. If set to None or missing, the default project_id from the Google Cloud connection is used.

  • on_new_job_id_callback (Optional[Callable[[str], None]]) – Callback called when the job ID is known.

  • location (str) – Job location.

static build_dataflow_job_name(job_name, append_job_name=True)[source]

Builds Dataflow job name.

is_job_dataflow_running(name, project_id, location=DEFAULT_DATAFLOW_LOCATION, variables=None)[source]

Helper method to check if jos is still running in dataflow

Parameters

  • name (str) – The name of the job.

  • project_id (str) – Optional, the Google Cloud project ID in which to start a job. If set to None or missing, the default project_id from the Google Cloud connection is used.

  • location (str) – Job location.

Returns

True if job is running.

Return type

bool

cancel_job(project_id, job_name=None, job_id=None, location=DEFAULT_DATAFLOW_LOCATION)[source]

Cancels the job with the specified name prefix or Job ID.

Parameter name and job_id are mutually exclusive.

Parameters

  • job_name (Optional[str]) – Name prefix specifying which jobs are to be canceled.

  • job_id (Optional[str]) – Job ID specifying which jobs are to be canceled.

  • location (str) – Job location.

  • project_id (str) – Optional, the Google Cloud project ID in which to start a job. If set to None or missing, the default project_id from the Google Cloud connection is used.

start_sql_job(job_name, query, options, project_id, location=DEFAULT_DATAFLOW_LOCATION, on_new_job_id_callback=None, on_new_job_callback=None)[source]

Starts Dataflow SQL query.

Parameters

  • job_name (str) – The unique name to assign to the Cloud Dataflow job.

  • query (str) – The SQL query to execute.

  • options (Dict[str, Any]) – Job parameters to be executed. For more information, look at: https://cloud.google.com/sdk/gcloud/reference/beta/dataflow/sql/query command reference

  • location (str) – The location of the Dataflow job (for example europe-west1)

  • project_id (str) – The ID of the GCP project that owns the job. If set to None or missing, the default project_id from the GCP connection is used.

  • on_new_job_id_callback (Optional[Callable[[str], None]]) – (Deprecated) Callback called when the job ID is known.

  • on_new_job_callback (Optional[Callable[[dict], None]]) – Callback called when the job is known.

Returns

the new job object

get_job(job_id, project_id, location=DEFAULT_DATAFLOW_LOCATION)[source]

Gets the job with the specified Job ID.

Parameters
Returns

the Job

Return type

dict

fetch_job_metrics_by_id(job_id, project_id, location=DEFAULT_DATAFLOW_LOCATION)[source]

Gets the job metrics with the specified Job ID.

Parameters
Returns

the JobMetrics. See: https://cloud.google.com/dataflow/docs/reference/rest/v1b3/JobMetrics

Return type

dict

fetch_job_messages_by_id(job_id, project_id, location=DEFAULT_DATAFLOW_LOCATION)[source]

Gets the job messages with the specified Job ID.

Parameters

  • job_id (str) – Job ID to get.

  • project_id (str) – Optional, the Google Cloud project ID in which to start a job. If set to None or missing, the default project_id from the Google Cloud connection is used.

  • location (str) – Job location.

Returns

the list of JobMessages. See: https://cloud.google.com/dataflow/docs/reference/rest/v1b3/ListJobMessagesResponse#JobMessage

Return type

List[dict]

fetch_job_autoscaling_events_by_id(job_id, project_id, location=DEFAULT_DATAFLOW_LOCATION)[source]

Gets the job autoscaling events with the specified Job ID.

Parameters

  • job_id (str) – Job ID to get.

  • project_id (str) – Optional, the Google Cloud project ID in which to start a job. If set to None or missing, the default project_id from the Google Cloud connection is used.

  • location (str) – Job location.

Returns

the list of AutoscalingEvents. See: https://cloud.google.com/dataflow/docs/reference/rest/v1b3/ListJobMessagesResponse#autoscalingevent

Return type

List[dict]

wait_for_done(job_name, location, project_id, job_id=None, multiple_jobs=False)[source]

Wait for Dataflow job.

Parameters

  • job_name (str) – The ‘jobName’ to use when executing the DataFlow job (templated). This ends up being set in the pipeline options, so any entry with key 'jobName' in options will be overwritten.

  • location (str) – location the job is running

  • project_id (str) – Optional, the Google Cloud project ID in which to start a job. If set to None or missing, the default project_id from the Google Cloud connection is used.

  • job_id (Optional[str]) – a Dataflow job ID

  • multiple_jobs (bool) – If pipeline creates multiple jobs then monitor all jobs

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