[ aws . glue ]

get-crawlers

Description

Retrieves metadata for all crawlers defined in the customer account.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

get-crawlers is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: Crawlers

Synopsis

  get-crawlers
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options

--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.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command’s output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--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

Crawlers -> (list)

A list of crawler metadata.

(structure)

Specifies a crawler program that examines a data source and uses classifiers to try to determine its schema. If successful, the crawler records metadata concerning the data source in the Glue Data Catalog.

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.

NextToken -> (string)

A continuation token, if the returned list has not reached the end of those defined in this customer account.