Glue / Client / get_crawler

get_crawler

Glue.Client.get_crawler(**kwargs)

Retrieves metadata for a specified crawler.

See also: AWS API Documentation

Request Syntax

response = client.get_crawler(
    Name='string'
)

Parameters:

Name (string) –

[REQUIRED]

The name of the crawler to retrieve metadata for.

Return type:

dict

Returns:

Response Syntax

{
    'Crawler': {
        'Name': 'string',
        'Role': 'string',
        'Targets': {
            'S3Targets': [
                {
                    'Path': 'string',
                    'Exclusions': [
                        'string',
                    ],
                    'ConnectionName': 'string',
                    'SampleSize': 123,
                    'EventQueueArn': 'string',
                    'DlqEventQueueArn': 'string'
                },
            ],
            'JdbcTargets': [
                {
                    'ConnectionName': 'string',
                    'Path': 'string',
                    'Exclusions': [
                        'string',
                    ],
                    'EnableAdditionalMetadata': [
                        'COMMENTS'|'RAWTYPES',
                    ]
                },
            ],
            'MongoDBTargets': [
                {
                    'ConnectionName': 'string',
                    'Path': 'string',
                    'ScanAll': True|False
                },
            ],
            'DynamoDBTargets': [
                {
                    'Path': 'string',
                    'scanAll': True|False,
                    'scanRate': 123.0
                },
            ],
            'CatalogTargets': [
                {
                    'DatabaseName': 'string',
                    'Tables': [
                        'string',
                    ],
                    'ConnectionName': 'string',
                    'EventQueueArn': 'string',
                    'DlqEventQueueArn': 'string'
                },
            ],
            'DeltaTargets': [
                {
                    'DeltaTables': [
                        'string',
                    ],
                    'ConnectionName': 'string',
                    'WriteManifest': True|False,
                    'CreateNativeDeltaTable': True|False
                },
            ]
        },
        'DatabaseName': 'string',
        'Description': 'string',
        'Classifiers': [
            'string',
        ],
        'RecrawlPolicy': {
            'RecrawlBehavior': 'CRAWL_EVERYTHING'|'CRAWL_NEW_FOLDERS_ONLY'|'CRAWL_EVENT_MODE'
        },
        'SchemaChangePolicy': {
            'UpdateBehavior': 'LOG'|'UPDATE_IN_DATABASE',
            'DeleteBehavior': 'LOG'|'DELETE_FROM_DATABASE'|'DEPRECATE_IN_DATABASE'
        },
        'LineageConfiguration': {
            'CrawlerLineageSettings': 'ENABLE'|'DISABLE'
        },
        'State': 'READY'|'RUNNING'|'STOPPING',
        'TablePrefix': 'string',
        'Schedule': {
            'ScheduleExpression': 'string',
            'State': 'SCHEDULED'|'NOT_SCHEDULED'|'TRANSITIONING'
        },
        'CrawlElapsedTime': 123,
        'CreationTime': datetime(2015, 1, 1),
        'LastUpdated': datetime(2015, 1, 1),
        'LastCrawl': {
            'Status': 'SUCCEEDED'|'CANCELLED'|'FAILED',
            'ErrorMessage': 'string',
            'LogGroup': 'string',
            'LogStream': 'string',
            'MessagePrefix': 'string',
            'StartTime': datetime(2015, 1, 1)
        },
        'Version': 123,
        'Configuration': 'string',
        'CrawlerSecurityConfiguration': 'string',
        'LakeFormationConfiguration': {
            'UseLakeFormationCredentials': True|False,
            'AccountId': 'string'
        }
    }
}

Response Structure

• (dict) –

  • Crawler (dict) –

    The metadata for the specified crawler.

    • Name (string) –

      The name of the crawler.

    • Role (string) –

      The Amazon Resource Name (ARN) of an IAM role that’s used to access customer resources, such as Amazon Simple Storage Service (Amazon S3) data.

    • Targets (dict) –

      A collection of targets to crawl.

      • S3Targets (list) –

        Specifies Amazon Simple Storage Service (Amazon S3) targets.

        • (dict) –

          Specifies a data store in Amazon Simple Storage Service (Amazon S3).

          • Path (string) –

            The path to the Amazon S3 target.

          • Exclusions (list) –

            A list of glob patterns used to exclude from the crawl. For more information, see Catalog Tables with a Crawler.

            • (string) –

          • ConnectionName (string) –

            The name of a connection which allows a job or crawler to access data in Amazon S3 within an Amazon Virtual Private Cloud environment (Amazon VPC).

          • SampleSize (integer) –

            Sets the number of files in each leaf folder to be crawled when crawling sample files in a dataset. If not set, all the files are crawled. A valid value is an integer between 1 and 249.

          • EventQueueArn (string) –

            A valid Amazon SQS ARN. For example, arn:aws:sqs:region:account:sqs.

          • DlqEventQueueArn (string) –

            A valid Amazon dead-letter SQS ARN. For example, arn:aws:sqs:region:account:deadLetterQueue.

      • JdbcTargets (list) –

        Specifies JDBC targets.

        • (dict) –

          Specifies a JDBC data store to crawl.

          • ConnectionName (string) –

            The name of the connection to use to connect to the JDBC target.

          • Path (string) –

            The path of the JDBC target.

          • Exclusions (list) –

            A list of glob patterns used to exclude from the crawl. For more information, see Catalog Tables with a Crawler.

            • (string) –

          • EnableAdditionalMetadata (list) –

            Specify a value of RAWTYPES or COMMENTS to enable additional metadata in table responses. RAWTYPES provides the native-level datatype. COMMENTS provides comments associated with a column or table in the database.

            If you do not need additional metadata, keep the field empty.

            • (string) –

      • MongoDBTargets (list) –

        Specifies Amazon DocumentDB or MongoDB targets.

        • (dict) –

          Specifies an Amazon DocumentDB or MongoDB data store to crawl.

          • ConnectionName (string) –

            The name of the connection to use to connect to the Amazon DocumentDB or MongoDB target.

          • Path (string) –

            The path of the Amazon DocumentDB or MongoDB target (database/collection).

          • ScanAll (boolean) –

            Indicates whether to scan all the records, or to sample rows from the table. Scanning all the records can take a long time when the table is not a high throughput table.

            A value of true means to scan all records, while a value of false means to sample the records. If no value is specified, the value defaults to true.

      • DynamoDBTargets (list) –

        Specifies Amazon DynamoDB targets.

        • (dict) –

          Specifies an Amazon DynamoDB table to crawl.

          • Path (string) –

            The name of the DynamoDB table to crawl.

          • scanAll (boolean) –

            Indicates whether to scan all the records, or to sample rows from the table. Scanning all the records can take a long time when the table is not a high throughput table.

            A value of true means to scan all records, while a value of false means to sample the records. If no value is specified, the value defaults to true.

          • scanRate (float) –

            The percentage of the configured read capacity units to use by the Glue crawler. Read capacity units is a term defined by DynamoDB, and is a numeric value that acts as rate limiter for the number of reads that can be performed on that table per second.

            The valid values are null or a value between 0.1 to 1.5. A null value is used when user does not provide a value, and defaults to 0.5 of the configured Read Capacity Unit (for provisioned tables), or 0.25 of the max configured Read Capacity Unit (for tables using on-demand mode).

      • CatalogTargets (list) –

        Specifies Glue Data Catalog targets.

        • (dict) –

          Specifies an Glue Data Catalog target.

          • DatabaseName (string) –

            The name of the database to be synchronized.

          • Tables (list) –

            A list of the tables to be synchronized.

            • (string) –

          • ConnectionName (string) –

            The name of the connection for an Amazon S3-backed Data Catalog table to be a target of the crawl when using a Catalog connection type paired with a NETWORK Connection type.

          • EventQueueArn (string) –

            A valid Amazon SQS ARN. For example, arn:aws:sqs:region:account:sqs.

          • DlqEventQueueArn (string) –

            A valid Amazon dead-letter SQS ARN. For example, arn:aws:sqs:region:account:deadLetterQueue.

      • DeltaTargets (list) –

        Specifies Delta data store targets.

        • (dict) –

          Specifies a Delta data store to crawl one or more Delta tables.

          • DeltaTables (list) –

            A list of the Amazon S3 paths to the Delta tables.

            • (string) –

          • ConnectionName (string) –

            The name of the connection to use to connect to the Delta table target.

          • WriteManifest (boolean) –

            Specifies whether to write the manifest files to the Delta table path.

          • CreateNativeDeltaTable (boolean) –

            Specifies whether the crawler will create native tables, to allow integration with query engines that support querying of the Delta transaction log directly.

    • DatabaseName (string) –

      The name of the database in which the crawler’s output is stored.

    • Description (string) –

      A description of the crawler.

    • Classifiers (list) –

      A list of UTF-8 strings that specify the custom classifiers that are associated with the crawler.

      • (string) –

    • RecrawlPolicy (dict) –

      A policy that specifies whether to crawl the entire dataset again, or to crawl only folders that were added since the last crawler run.

      • RecrawlBehavior (string) –

        Specifies whether to crawl the entire dataset again or to crawl only folders that were added since the last crawler run.

        A value of CRAWL_EVERYTHING specifies crawling the entire dataset again.

        A value of CRAWL_NEW_FOLDERS_ONLY specifies crawling only folders that were added since the last crawler run.

        A value of CRAWL_EVENT_MODE specifies crawling only the changes identified by Amazon S3 events.

    • SchemaChangePolicy (dict) –

      The policy that specifies update and delete behaviors for the crawler.

      • UpdateBehavior (string) –

        The update behavior when the crawler finds a changed schema.

      • DeleteBehavior (string) –

        The deletion behavior when the crawler finds a deleted object.

    • LineageConfiguration (dict) –

      A configuration that specifies whether data lineage is enabled for the crawler.

      • CrawlerLineageSettings (string) –

        Specifies whether data lineage is enabled for the crawler. Valid values are:

        • ENABLE: enables data lineage for the crawler

        • DISABLE: disables data lineage for the crawler

    • State (string) –

      Indicates whether the crawler is running, or whether a run is pending.

    • TablePrefix (string) –

      The prefix added to the names of tables that are created.

    • Schedule (dict) –

      For scheduled crawlers, the schedule when the crawler runs.

      • ScheduleExpression (string) –

        A cron expression used to specify the schedule (see Time-Based Schedules for Jobs and Crawlers. For example, to run something every day at 12:15 UTC, you would specify: cron(15 12 * * ? *).

      • State (string) –

        The state of the schedule.

    • CrawlElapsedTime (integer) –

      If the crawler is running, contains the total time elapsed since the last crawl began.

    • CreationTime (datetime) –

      The time that the crawler was created.

    • LastUpdated (datetime) –

      The time that the crawler was last updated.

    • LastCrawl (dict) –

      The status of the last crawl, and potentially error information if an error occurred.

      • Status (string) –

        Status of the last crawl.

      • ErrorMessage (string) –

        If an error occurred, the error information about the last crawl.

      • LogGroup (string) –

        The log group for the last crawl.

      • LogStream (string) –

        The log stream for the last crawl.

      • MessagePrefix (string) –

        The prefix for a message about this crawl.

      • StartTime (datetime) –

        The time at which the crawl started.

    • Version (integer) –

      The version of the crawler.

    • Configuration (string) –

      Crawler configuration information. This versioned JSON string allows users to specify aspects of a crawler’s behavior. For more information, see Setting crawler configuration options.

    • CrawlerSecurityConfiguration (string) –

      The name of the SecurityConfiguration structure to be used by this crawler.

    • LakeFormationConfiguration (dict) –

      Specifies whether the crawler should use Lake Formation credentials for the crawler instead of the IAM role credentials.

      • UseLakeFormationCredentials (boolean) –

        Specifies whether to use Lake Formation credentials for the crawler instead of the IAM role credentials.

      • AccountId (string) –

        Required for cross account crawls. For same account crawls as the target data, this can be left as null.

Exceptions

• Glue.Client.exceptions.EntityNotFoundException

• Glue.Client.exceptions.OperationTimeoutException