[ aws . glue ]

get-crawler

Description

Retrieves metadata for a specified crawler.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  get-crawler
--name <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options

--name (string)

The name of the crawler to retrieve metadata for.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.

Output

Crawler -> (structure)

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 -> (structure)

A collection of targets to crawl.

S3Targets -> (list)

Specifies Amazon Simple Storage Service (Amazon S3) targets.

(structure)

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.

(structure)

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)

MongoDBTargets -> (list)

Specifies Amazon DocumentDB or MongoDB targets.

(structure)

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.

(structure)

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 -> (double)

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.

(structure)

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)

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 -> (structure)

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 -> (structure)

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 -> (structure)

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 -> (structure)

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 -> (long)

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

CreationTime -> (timestamp)

The time that the crawler was created.

LastUpdated -> (timestamp)

The time that the crawler was last updated.

LastCrawl -> (structure)

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 -> (timestamp)

The time at which the crawl started.

Version -> (long)

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 Include and Exclude Patterns .

CrawlerSecurityConfiguration -> (string)

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