# Cloudwatch Logs

This page documents function available when using the Cloudwatch_Logs module, created with @service Cloudwatch_Logs.

### Documentation

Main.Cloudwatch_Logs.associate_kms_keyMethod
associate_kms_key(kms_key_id, log_group_name)
associate_kms_key(kms_key_id, log_group_name, params::Dict{String,<:Any})

Associates the specified KMS key with the specified log group. Associating a KMS key with a log group overrides any existing associations between the log group and a KMS key. After a KMS key is associated with a log group, all newly ingested data for the log group is encrypted using the KMS key. This association is stored as long as the data encrypted with the KMS keyis still within CloudWatch Logs. This enables CloudWatch Logs to decrypt this data whenever it is requested. CloudWatch Logs supports only symmetric KMS keys. Do not use an associate an asymmetric KMS key with your log group. For more information, see Using Symmetric and Asymmetric Keys. It can take up to 5 minutes for this operation to take effect. If you attempt to associate a KMS key with a log group but the KMS key does not exist or the KMS key is disabled, you receive an InvalidParameterException error.

Arguments

• kms_key_id: The Amazon Resource Name (ARN) of the KMS key to use when encrypting log data. This must be a symmetric KMS key. For more information, see Amazon Resource Names and Using Symmetric and Asymmetric Keys.
• log_group_name: The name of the log group.
source
Main.Cloudwatch_Logs.cancel_export_taskMethod
cancel_export_task(task_id)
cancel_export_task(task_id, params::Dict{String,<:Any})

Cancels the specified export task. The task must be in the PENDING or RUNNING state.

Arguments

• task_id: The ID of the export task.
source
Main.Cloudwatch_Logs.create_export_taskMethod
create_export_task(destination, from, log_group_name, to)
create_export_task(destination, from, log_group_name, to, params::Dict{String,<:Any})

Arguments

• destination: The name of S3 bucket for the exported log data. The bucket must be in the same Amazon Web Services Region.
• from: The start time of the range for the request, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC. Events with a timestamp earlier than this time are not exported.
• log_group_name: The name of the log group.
• to: The end time of the range for the request, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC. Events with a timestamp later than this time are not exported. You must specify a time that is not earlier than when this log group was created.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "destinationPrefix": The prefix used as the start of the key for every object exported. If you don't specify a value, the default is exportedlogs.
• "logStreamNamePrefix": Export only log streams that match the provided prefix. If you don't specify a value, no prefix filter is applied.
• "taskName": The name of the export task.
source
Main.Cloudwatch_Logs.create_log_groupMethod
create_log_group(log_group_name)
create_log_group(log_group_name, params::Dict{String,<:Any})

Creates a log group with the specified name. You can create up to 20,000 log groups per account. You must use the following guidelines when naming a log group: Log group names must be unique within a Region for an Amazon Web Services account. Log group names can be between 1 and 512 characters long. Log group names consist of the following characters: a-z, A-Z, 0-9, '_' (underscore), '-' (hyphen), '/' (forward slash), '.' (period), and '#' (number sign) When you create a log group, by default the log events in the log group do not expire. To set a retention policy so that events expire and are deleted after a specified time, use PutRetentionPolicy. If you associate an KMS key with the log group, ingested data is encrypted using the KMS key. This association is stored as long as the data encrypted with the KMS key is still within CloudWatch Logs. This enables CloudWatch Logs to decrypt this data whenever it is requested. If you attempt to associate a KMS key with the log group but the KMS keydoes not exist or the KMS key is disabled, you receive an InvalidParameterException error. CloudWatch Logs supports only symmetric KMS keys. Do not associate an asymmetric KMS key with your log group. For more information, see Using Symmetric and Asymmetric Keys.

Arguments

• log_group_name: The name of the log group.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "kmsKeyId": The Amazon Resource Name (ARN) of the KMS key to use when encrypting log data. For more information, see Amazon Resource Names.
• "tags": The key-value pairs to use for the tags. You can grant users access to certain log groups while preventing them from accessing other log groups. To do so, tag your groups and use IAM policies that refer to those tags. To assign tags when you create a log group, you must have either the logs:TagResource or logs:TagLogGroup permission. For more information about tagging, see Tagging Amazon Web Services resources. For more information about using tags to control access, see Controlling access to Amazon Web Services resources using tags.
source
Main.Cloudwatch_Logs.create_log_streamMethod
create_log_stream(log_group_name, log_stream_name)
create_log_stream(log_group_name, log_stream_name, params::Dict{String,<:Any})

Creates a log stream for the specified log group. A log stream is a sequence of log events that originate from a single source, such as an application instance or a resource that is being monitored. There is no limit on the number of log streams that you can create for a log group. There is a limit of 50 TPS on CreateLogStream operations, after which transactions are throttled. You must use the following guidelines when naming a log stream: Log stream names must be unique within the log group. Log stream names can be between 1 and 512 characters long. Don't use ':' (colon) or '*' (asterisk) characters.

Arguments

• log_group_name: The name of the log group.
• log_stream_name: The name of the log stream.
source
Main.Cloudwatch_Logs.delete_data_protection_policyMethod
delete_data_protection_policy(log_group_identifier)
delete_data_protection_policy(log_group_identifier, params::Dict{String,<:Any})

Deletes the data protection policy from the specified log group. For more information about data protection policies, see PutDataProtectionPolicy.

Arguments

• log_group_identifier: The name or ARN of the log group that you want to delete the data protection policy for.
source
Main.Cloudwatch_Logs.delete_destinationMethod
delete_destination(destination_name)
delete_destination(destination_name, params::Dict{String,<:Any})

Deletes the specified destination, and eventually disables all the subscription filters that publish to it. This operation does not delete the physical resource encapsulated by the destination.

Arguments

• destination_name: The name of the destination.
source
Main.Cloudwatch_Logs.delete_log_groupMethod
delete_log_group(log_group_name)
delete_log_group(log_group_name, params::Dict{String,<:Any})

Deletes the specified log group and permanently deletes all the archived log events associated with the log group.

Arguments

• log_group_name: The name of the log group.
source
Main.Cloudwatch_Logs.delete_log_streamMethod
delete_log_stream(log_group_name, log_stream_name)
delete_log_stream(log_group_name, log_stream_name, params::Dict{String,<:Any})

Deletes the specified log stream and permanently deletes all the archived log events associated with the log stream.

Arguments

• log_group_name: The name of the log group.
• log_stream_name: The name of the log stream.
source
Main.Cloudwatch_Logs.delete_metric_filterMethod
delete_metric_filter(filter_name, log_group_name)
delete_metric_filter(filter_name, log_group_name, params::Dict{String,<:Any})

Deletes the specified metric filter.

Arguments

• filter_name: The name of the metric filter.
• log_group_name: The name of the log group.
source
Main.Cloudwatch_Logs.delete_query_definitionMethod
delete_query_definition(query_definition_id)
delete_query_definition(query_definition_id, params::Dict{String,<:Any})

Deletes a saved CloudWatch Logs Insights query definition. A query definition contains details about a saved CloudWatch Logs Insights query. Each DeleteQueryDefinition operation can delete one query definition. You must have the logs:DeleteQueryDefinition permission to be able to perform this operation.

Arguments

• query_definition_id: The ID of the query definition that you want to delete. You can use DescribeQueryDefinitions to retrieve the IDs of your saved query definitions.
source
Main.Cloudwatch_Logs.delete_resource_policyMethod
delete_resource_policy()
delete_resource_policy(params::Dict{String,<:Any})

Deletes a resource policy from this account. This revokes the access of the identities in that policy to put log events to this account.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "policyName": The name of the policy to be revoked. This parameter is required.
source
Main.Cloudwatch_Logs.delete_retention_policyMethod
delete_retention_policy(log_group_name)
delete_retention_policy(log_group_name, params::Dict{String,<:Any})

Deletes the specified retention policy. Log events do not expire if they belong to log groups without a retention policy.

Arguments

• log_group_name: The name of the log group.
source
Main.Cloudwatch_Logs.delete_subscription_filterMethod
delete_subscription_filter(filter_name, log_group_name)
delete_subscription_filter(filter_name, log_group_name, params::Dict{String,<:Any})

Deletes the specified subscription filter.

Arguments

• filter_name: The name of the subscription filter.
• log_group_name: The name of the log group.
source
Main.Cloudwatch_Logs.describe_destinationsMethod
describe_destinations()
describe_destinations(params::Dict{String,<:Any})

Lists all your destinations. The results are ASCII-sorted by destination name.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "DestinationNamePrefix": The prefix to match. If you don't specify a value, no prefix filter is applied.
• "limit": The maximum number of items returned. If you don't specify a value, the default maximum value of 50 items is used.
• "nextToken": The token for the next set of items to return. (You received this token from a previous call.)
source
Main.Cloudwatch_Logs.describe_export_tasksMethod
describe_export_tasks()
describe_export_tasks(params::Dict{String,<:Any})

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "limit": The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
• "nextToken": The token for the next set of items to return. (You received this token from a previous call.)
• "statusCode": The status code of the export task. Specifying a status code filters the results to zero or more export tasks.
• "taskId": The ID of the export task. Specifying a task ID filters the results to one or zero export tasks.
source
Main.Cloudwatch_Logs.describe_log_groupsMethod
describe_log_groups()
describe_log_groups(params::Dict{String,<:Any})

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "accountIdentifiers": When includeLinkedAccounts is set to True, use this parameter to specify the list of accounts to search. You can specify as many as 20 account IDs in the array.
• "includeLinkedAccounts": If you are using a monitoring account, set this to True to have the operation return log groups in the accounts listed in accountIdentifiers. If this parameter is set to true and accountIdentifiers contains a null value, the operation returns all log groups in the monitoring account and all log groups in all source accounts that are linked to the monitoring account. If you specify includeLinkedAccounts in your request, then metricFilterCount, retentionInDays, and storedBytes are not included in the response.
• "limit": The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
• "logGroupNamePattern": If you specify a string for this parameter, the operation returns only log groups that have names that match the string based on a case-sensitive substring search. For example, if you specify Foo, log groups named FooBar, aws/Foo, and GroupFoo would match, but foo, F/o/o and Froo would not match. logGroupNamePattern and logGroupNamePrefix are mutually exclusive. Only one of these parameters can be passed.
• "logGroupNamePrefix": The prefix to match. logGroupNamePrefix and logGroupNamePattern are mutually exclusive. Only one of these parameters can be passed.
• "nextToken": The token for the next set of items to return. (You received this token from a previous call.)
source
Main.Cloudwatch_Logs.describe_log_streamsMethod
describe_log_streams(log_group_name)
describe_log_streams(log_group_name, params::Dict{String,<:Any})

Lists the log streams for the specified log group. You can list all the log streams or filter the results by prefix. You can also control how the results are ordered. This operation has a limit of five transactions per second, after which transactions are throttled. If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

Arguments

• log_group_name: The name of the log group. If you specify values for both logGroupName and logGroupIdentifier, the action returns an InvalidParameterException error.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "descending": If the value is true, results are returned in descending order. If the value is to false, results are returned in ascending order. The default value is false.
• "limit": The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
• "logGroupIdentifier": Specify either the name or ARN of the log group to view. If the log group is in a source account and you are using a monitoring account, you must use the log group ARN. If you specify values for both logGroupName and logGroupIdentifier, the action returns an InvalidParameterException error.
• "logStreamNamePrefix": The prefix to match. If orderBy is LastEventTime, you cannot specify this parameter.
• "nextToken": The token for the next set of items to return. (You received this token from a previous call.)
• "orderBy": If the value is LogStreamName, the results are ordered by log stream name. If the value is LastEventTime, the results are ordered by the event time. The default value is LogStreamName. If you order the results by event time, you cannot specify the logStreamNamePrefix parameter. lastEventTimestamp represents the time of the most recent log event in the log stream in CloudWatch Logs. This number is expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC. lastEventTimestamp updates on an eventual consistency basis. It typically updates in less than an hour from ingestion, but in rare situations might take longer.
source
Main.Cloudwatch_Logs.describe_metric_filtersMethod
describe_metric_filters()
describe_metric_filters(params::Dict{String,<:Any})

Lists the specified metric filters. You can list all of the metric filters or filter the results by log name, prefix, metric name, or metric namespace. The results are ASCII-sorted by filter name.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "filterNamePrefix": The prefix to match. CloudWatch Logs uses the value that you set here only if you also include the logGroupName parameter in your request.
• "limit": The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
• "logGroupName": The name of the log group.
• "metricName": Filters results to include only those with the specified metric name. If you include this parameter in your request, you must also include the metricNamespace parameter.
• "metricNamespace": Filters results to include only those in the specified namespace. If you include this parameter in your request, you must also include the metricName parameter.
• "nextToken": The token for the next set of items to return. (You received this token from a previous call.)
source
Main.Cloudwatch_Logs.describe_queriesMethod
describe_queries()
describe_queries(params::Dict{String,<:Any})

Returns a list of CloudWatch Logs Insights queries that are scheduled, running, or have been run recently in this account. You can request all queries or limit it to queries of a specific log group or queries with a certain status.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "logGroupName": Limits the returned queries to only those for the specified log group.
• "maxResults": Limits the number of returned queries to the specified number.
• "nextToken":
• "status": Limits the returned queries to only those that have the specified status. Valid values are Cancelled, Complete, Failed, Running, and Scheduled.
source
Main.Cloudwatch_Logs.describe_query_definitionsMethod
describe_query_definitions()
describe_query_definitions(params::Dict{String,<:Any})

This operation returns a paginated list of your saved CloudWatch Logs Insights query definitions. You can use the queryDefinitionNamePrefix parameter to limit the results to only the query definitions that have names that start with a certain string.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "maxResults": Limits the number of returned query definitions to the specified number.
• "nextToken":
• "queryDefinitionNamePrefix": Use this parameter to filter your results to only the query definitions that have names that start with the prefix you specify.
source
Main.Cloudwatch_Logs.describe_resource_policiesMethod
describe_resource_policies()
describe_resource_policies(params::Dict{String,<:Any})

Lists the resource policies in this account.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "limit": The maximum number of resource policies to be displayed with one call of this API.
• "nextToken":
source
Main.Cloudwatch_Logs.describe_subscription_filtersMethod
describe_subscription_filters(log_group_name)
describe_subscription_filters(log_group_name, params::Dict{String,<:Any})

Lists the subscription filters for the specified log group. You can list all the subscription filters or filter the results by prefix. The results are ASCII-sorted by filter name.

Arguments

• log_group_name: The name of the log group.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "filterNamePrefix": The prefix to match. If you don't specify a value, no prefix filter is applied.
• "limit": The maximum number of items returned. If you don't specify a value, the default is up to 50 items.
• "nextToken": The token for the next set of items to return. (You received this token from a previous call.)
source
Main.Cloudwatch_Logs.disassociate_kms_keyMethod
disassociate_kms_key(log_group_name)
disassociate_kms_key(log_group_name, params::Dict{String,<:Any})

Disassociates the associated KMS key from the specified log group. After the KMS key is disassociated from the log group, CloudWatch Logs stops encrypting newly ingested data for the log group. All previously ingested data remains encrypted, and CloudWatch Logs requires permissions for the KMS key whenever the encrypted data is requested. Note that it can take up to 5 minutes for this operation to take effect.

Arguments

• log_group_name: The name of the log group.
source
Main.Cloudwatch_Logs.filter_log_eventsMethod
filter_log_events(log_group_name)
filter_log_events(log_group_name, params::Dict{String,<:Any})

Lists log events from the specified log group. You can list all the log events or filter the results using a filter pattern, a time range, and the name of the log stream. You must have the logs;FilterLogEvents permission to perform this operation. By default, this operation returns as many log events as can fit in 1 MB (up to 10,000 log events) or all the events found within the specified time range. If the results include a token, that means there are more log events available. You can get additional results by specifying the token in a subsequent call. This operation can return empty results while there are more log events available through the token. The returned log events are sorted by event timestamp, the timestamp when the event was ingested by CloudWatch Logs, and the ID of the PutLogEvents request. If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

Arguments

• log_group_name: The name of the log group to search. If you specify values for both logGroupName and logGroupIdentifier, the action returns an InvalidParameterException error.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "endTime": The end of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC. Events with a timestamp later than this time are not returned.
• "filterPattern": The filter pattern to use. For more information, see Filter and Pattern Syntax. If not provided, all the events are matched.
• "interleaved": If the value is true, the operation attempts to provide responses that contain events from multiple log streams within the log group, interleaved in a single response. If the value is false, all the matched log events in the first log stream are searched first, then those in the next log stream, and so on. Important As of June 17, 2019, this parameter is ignored and the value is assumed to be true. The response from this operation always interleaves events from multiple log streams within a log group.
• "limit": The maximum number of events to return. The default is 10,000 events.
• "logGroupIdentifier": Specify either the name or ARN of the log group to view log events from. If the log group is in a source account and you are using a monitoring account, you must use the log group ARN. If you specify values for both logGroupName and logGroupIdentifier, the action returns an InvalidParameterException error.
• "logStreamNamePrefix": Filters the results to include only events from log streams that have names starting with this prefix. If you specify a value for both logStreamNamePrefix and logStreamNames, but the value for logStreamNamePrefix does not match any log stream names specified in logStreamNames, the action returns an InvalidParameterException error.
• "logStreamNames": Filters the results to only logs from the log streams in this list. If you specify a value for both logStreamNamePrefix and logStreamNames, the action returns an InvalidParameterException error.
• "nextToken": The token for the next set of events to return. (You received this token from a previous call.)
• "startTime": The start of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC. Events with a timestamp before this time are not returned.
• "unmask": Specify true to display the log event fields with all sensitive data unmasked and visible. The default is false. To use this operation with this parameter, you must be signed into an account with the logs:Unmask permission.
source
Main.Cloudwatch_Logs.get_data_protection_policyMethod
get_data_protection_policy(log_group_identifier)
get_data_protection_policy(log_group_identifier, params::Dict{String,<:Any})

Returns information about a log group data protection policy.

Arguments

• log_group_identifier: The name or ARN of the log group that contains the data protection policy that you want to see.
source
Main.Cloudwatch_Logs.get_log_eventsMethod
get_log_events(log_group_name, log_stream_name)
get_log_events(log_group_name, log_stream_name, params::Dict{String,<:Any})

Lists log events from the specified log stream. You can list all of the log events or filter using a time range. By default, this operation returns as many log events as can fit in a response size of 1MB (up to 10,000 log events). You can get additional log events by specifying one of the tokens in a subsequent call. This operation can return empty results while there are more log events available through the token. If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

Arguments

• log_group_name: The name of the log group. If you specify values for both logGroupName and logGroupIdentifier, the action returns an InvalidParameterException error.
• log_stream_name: The name of the log stream.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "endTime": The end of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC. Events with a timestamp equal to or later than this time are not included.
• "limit": The maximum number of log events returned. If you don't specify a limit, the default is as many log events as can fit in a response size of 1 MB (up to 10,000 log events).
• "logGroupIdentifier": Specify either the name or ARN of the log group to view events from. If the log group is in a source account and you are using a monitoring account, you must use the log group ARN. If you specify values for both logGroupName and logGroupIdentifier, the action returns an InvalidParameterException error.
• "nextToken": The token for the next set of items to return. (You received this token from a previous call.)
• "startFromHead": If the value is true, the earliest log events are returned first. If the value is false, the latest log events are returned first. The default value is false. If you are using a previous nextForwardToken value as the nextToken in this operation, you must specify true for startFromHead.
• "startTime": The start of the time range, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC. Events with a timestamp equal to this time or later than this time are included. Events with a timestamp earlier than this time are not included.
• "unmask": Specify true to display the log event fields with all sensitive data unmasked and visible. The default is false. To use this operation with this parameter, you must be signed into an account with the logs:Unmask permission.
source
Main.Cloudwatch_Logs.get_log_group_fieldsMethod
get_log_group_fields(log_group_name)
get_log_group_fields(log_group_name, params::Dict{String,<:Any})

Returns a list of the fields that are included in log events in the specified log group. Includes the percentage of log events that contain each field. The search is limited to a time period that you specify. In the results, fields that start with @ are fields generated by CloudWatch Logs. For example, @timestamp is the timestamp of each log event. For more information about the fields that are generated by CloudWatch logs, see Supported Logs and Discovered Fields. The response results are sorted by the frequency percentage, starting with the highest percentage. If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account and view data from the linked source accounts. For more information, see CloudWatch cross-account observability.

Arguments

• log_group_name: The name of the log group to search. If you specify values for both logGroupName and logGroupIdentifier, the action returns an InvalidParameterException error.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "logGroupIdentifier": Specify either the name or ARN of the log group to view. If the log group is in a source account and you are using a monitoring account, you must specify the ARN. If you specify values for both logGroupName and logGroupIdentifier, the action returns an InvalidParameterException error.
• "time": The time to set as the center of the query. If you specify time, the 15 minutes before this time are queries. If you omit time, the 8 minutes before and 8 minutes after this time are searched. The time value is specified as epoch time, which is the number of seconds since January 1, 1970, 00:00:00 UTC.
source
Main.Cloudwatch_Logs.get_log_recordMethod
get_log_record(log_record_pointer)
get_log_record(log_record_pointer, params::Dict{String,<:Any})

Retrieves all of the fields and values of a single log event. All fields are retrieved, even if the original query that produced the logRecordPointer retrieved only a subset of fields. Fields are returned as field name/field value pairs. The full unparsed log event is returned within @message.

Arguments

• log_record_pointer: The pointer corresponding to the log event record you want to retrieve. You get this from the response of a GetQueryResults operation. In that response, the value of the @ptr field for a log event is the value to use as logRecordPointer to retrieve that complete log event record.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "unmask": Specify true to display the log event fields with all sensitive data unmasked and visible. The default is false. To use this operation with this parameter, you must be signed into an account with the logs:Unmask permission.
source
Main.Cloudwatch_Logs.get_query_resultsMethod
get_query_results(query_id)
get_query_results(query_id, params::Dict{String,<:Any})

Returns the results from the specified query. Only the fields requested in the query are returned, along with a @ptr field, which is the identifier for the log record. You can use the value of @ptr in a GetLogRecord operation to get the full log record. GetQueryResults does not start running a query. To run a query, use StartQuery. If the value of the Status field in the output is Running, this operation returns only partial results. If you see a value of Scheduled or Running for the status, you can retry the operation later to see the final results. If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account to start queries in linked source accounts. For more information, see CloudWatch cross-account observability.

Arguments

• query_id: The ID number of the query.
source
Main.Cloudwatch_Logs.list_tags_for_resourceMethod
list_tags_for_resource(resource_arn)
list_tags_for_resource(resource_arn, params::Dict{String,<:Any})

Displays the tags associated with a CloudWatch Logs resource. Currently, log groups and destinations support tagging.

Arguments

• resource_arn: The ARN of the resource that you want to view tags for. The ARN format of a log group is arn:aws:logs:Region:account-id:log-group:log-group-name The ARN format of a destination is arn:aws:logs:Region:account-id:destination:destination-name For more information about ARN format, see CloudWatch Logs resources and operations.
source
Main.Cloudwatch_Logs.list_tags_log_groupMethod
list_tags_log_group(log_group_name)
list_tags_log_group(log_group_name, params::Dict{String,<:Any})

The ListTagsLogGroup operation is on the path to deprecation. We recommend that you use ListTagsForResource instead. Lists the tags for the specified log group.

Arguments

• log_group_name: The name of the log group.
source
Main.Cloudwatch_Logs.put_data_protection_policyMethod
put_data_protection_policy(log_group_identifier, policy_document)
put_data_protection_policy(log_group_identifier, policy_document, params::Dict{String,<:Any})

Arguments

• log_group_identifier: Specify either the log group name or log group ARN.
• policy_document: Specify the data protection policy, in JSON. This policy must include two JSON blocks: The first block must include both a DataIdentifer array and an Operation property with an Audit action. The DataIdentifer array lists the types of sensitive data that you want to mask. For more information about the available options, see Types of data that you can mask. The Operation property with an Audit action is required to find the sensitive data terms. This Audit action must contain a FindingsDestination object. You can optionally use that FindingsDestination object to list one or more destinations to send audit findings to. If you specify destinations such as log groups, Kinesis Data Firehose streams, and S3 buckets, they must already exist. The second block must include both a DataIdentifer array and an Operation property with an Deidentify action. The DataIdentifer array must exactly match the DataIdentifer array in the first block of the policy. The Operation property with the Deidentify action is what actually masks the data, and it must contain the "MaskConfig": {} object. The "MaskConfig": {} object must be empty. For an example data protection policy, see the Examples section on this page. The contents of two DataIdentifer arrays must match exactly.
source
Main.Cloudwatch_Logs.put_destinationMethod
put_destination(destination_name, role_arn, target_arn)
put_destination(destination_name, role_arn, target_arn, params::Dict{String,<:Any})

Creates or updates a destination. This operation is used only to create destinations for cross-account subscriptions. A destination encapsulates a physical resource (such as an Amazon Kinesis stream). With a destination, you can subscribe to a real-time stream of log events for a different account, ingested using PutLogEvents. Through an access policy, a destination controls what is written to it. By default, PutDestination does not set any access policy with the destination, which means a cross-account user cannot call PutSubscriptionFilter against this destination. To enable this, the destination owner must call PutDestinationPolicy after PutDestination. To perform a PutDestination operation, you must also have the iam:PassRole permission.

Arguments

• destination_name: A name for the destination.
• role_arn: The ARN of an IAM role that grants CloudWatch Logs permissions to call the Amazon Kinesis PutRecord operation on the destination stream.
• target_arn: The ARN of an Amazon Kinesis stream to which to deliver matching log events.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "tags": An optional list of key-value pairs to associate with the resource. For more information about tagging, see Tagging Amazon Web Services resources
source
Main.Cloudwatch_Logs.put_destination_policyMethod
put_destination_policy(access_policy, destination_name)
put_destination_policy(access_policy, destination_name, params::Dict{String,<:Any})

Creates or updates an access policy associated with an existing destination. An access policy is an IAM policy document that is used to authorize claims to register a subscription filter against a given destination.

Arguments

• access_policy: An IAM policy document that authorizes cross-account users to deliver their log events to the associated destination. This can be up to 5120 bytes.
• destination_name: A name for an existing destination.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "forceUpdate": Specify true if you are updating an existing destination policy to grant permission to an organization ID instead of granting permission to individual AWS accounts. Before you update a destination policy this way, you must first update the subscription filters in the accounts that send logs to this destination. If you do not, the subscription filters might stop working. By specifying true for forceUpdate, you are affirming that you have already updated the subscription filters. For more information, see Updating an existing cross-account subscription If you omit this parameter, the default of false is used.
source
Main.Cloudwatch_Logs.put_log_eventsMethod
put_log_events(log_events, log_group_name, log_stream_name)
put_log_events(log_events, log_group_name, log_stream_name, params::Dict{String,<:Any})

Uploads a batch of log events to the specified log stream. The sequence token is now ignored in PutLogEvents actions. PutLogEvents actions are always accepted and never return InvalidSequenceTokenException or DataAlreadyAcceptedException even if the sequence token is not valid. You can use parallel PutLogEvents actions on the same log stream. The batch of events must satisfy the following constraints: The maximum batch size is 1,048,576 bytes. This size is calculated as the sum of all event messages in UTF-8, plus 26 bytes for each log event. None of the log events in the batch can be more than 2 hours in the future. None of the log events in the batch can be more than 14 days in the past. Also, none of the log events can be from earlier than the retention period of the log group. The log events in the batch must be in chronological order by their timestamp. The timestamp is the time that the event occurred, expressed as the number of milliseconds after Jan 1, 1970 00:00:00 UTC. (In Amazon Web Services Tools for PowerShell and the Amazon Web Services SDK for .NET, the timestamp is specified in .NET format: yyyy-mm-ddThh:mm:ss. For example, 2017-09-15T13:45:30.) A batch of log events in a single request cannot span more than 24 hours. Otherwise, the operation fails. The maximum number of log events in a batch is 10,000. The quota of five requests per second per log stream has been removed. Instead, PutLogEvents actions are throttled based on a per-second per-account quota. You can request an increase to the per-second throttling quota by using the Service Quotas service. If a call to PutLogEvents returns "UnrecognizedClientException" the most likely cause is a non-valid Amazon Web Services access key ID or secret key.

Arguments

• log_events: The log events.
• log_group_name: The name of the log group.
• log_stream_name: The name of the log stream.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "sequenceToken": The sequence token obtained from the response of the previous PutLogEvents call. The sequenceToken parameter is now ignored in PutLogEvents actions. PutLogEvents actions are now accepted and never return InvalidSequenceTokenException or DataAlreadyAcceptedException even if the sequence token is not valid.
source
Main.Cloudwatch_Logs.put_metric_filterMethod
put_metric_filter(filter_name, filter_pattern, log_group_name, metric_transformations)
put_metric_filter(filter_name, filter_pattern, log_group_name, metric_transformations, params::Dict{String,<:Any})

Creates or updates a metric filter and associates it with the specified log group. With metric filters, you can configure rules to extract metric data from log events ingested through PutLogEvents. The maximum number of metric filters that can be associated with a log group is 100. When you create a metric filter, you can also optionally assign a unit and dimensions to the metric that is created. Metrics extracted from log events are charged as custom metrics. To prevent unexpected high charges, do not specify high-cardinality fields such as IPAddress or requestID as dimensions. Each different value found for a dimension is treated as a separate metric and accrues charges as a separate custom metric. CloudWatch Logs disables a metric filter if it generates 1,000 different name/value pairs for your specified dimensions within a certain amount of time. This helps to prevent accidental high charges. You can also set up a billing alarm to alert you if your charges are higher than expected. For more information, see Creating a Billing Alarm to Monitor Your Estimated Amazon Web Services Charges.

Arguments

• filter_name: A name for the metric filter.
• filter_pattern: A filter pattern for extracting metric data out of ingested log events.
• log_group_name: The name of the log group.
• metric_transformations: A collection of information that defines how metric data gets emitted.
source
Main.Cloudwatch_Logs.put_query_definitionMethod
put_query_definition(name, query_string)
put_query_definition(name, query_string, params::Dict{String,<:Any})

Creates or updates a query definition for CloudWatch Logs Insights. For more information, see Analyzing Log Data with CloudWatch Logs Insights. To update a query definition, specify its queryDefinitionId in your request. The values of name, queryString, and logGroupNames are changed to the values that you specify in your update operation. No current values are retained from the current query definition. For example, imagine updating a current query definition that includes log groups. If you don't specify the logGroupNames parameter in your update operation, the query definition changes to contain no log groups. You must have the logs:PutQueryDefinition permission to be able to perform this operation.

Arguments

• name: A name for the query definition. If you are saving numerous query definitions, we recommend that you name them. This way, you can find the ones you want by using the first part of the name as a filter in the queryDefinitionNamePrefix parameter of DescribeQueryDefinitions.
• query_string: The query string to use for this definition. For more information, see CloudWatch Logs Insights Query Syntax.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "logGroupNames": Use this parameter to include specific log groups as part of your query definition. If you are updating a query definition and you omit this parameter, then the updated definition will contain no log groups.
• "queryDefinitionId": If you are updating a query definition, use this parameter to specify the ID of the query definition that you want to update. You can use DescribeQueryDefinitions to retrieve the IDs of your saved query definitions. If you are creating a query definition, do not specify this parameter. CloudWatch generates a unique ID for the new query definition and include it in the response to this operation.
source
Main.Cloudwatch_Logs.put_resource_policyMethod
put_resource_policy()
put_resource_policy(params::Dict{String,<:Any})

Creates or updates a resource policy allowing other Amazon Web Services services to put log events to this account, such as Amazon Route 53. An account can have up to 10 resource policies per Amazon Web Services Region.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "policyDocument": Details of the new policy, including the identity of the principal that is enabled to put logs to this account. This is formatted as a JSON string. This parameter is required. The following example creates a resource policy enabling the Route 53 service to put DNS query logs in to the specified log group. Replace "logArn" with the ARN of your CloudWatch Logs resource, such as a log group or log stream. CloudWatch Logs also supports aws:SourceArn and aws:SourceAccount condition context keys. In the example resource policy, you would replace the value of SourceArn with the resource making the call from Route 53 to CloudWatch Logs. You would also replace the value of SourceAccount with the Amazon Web Services account ID making that call. { "Version": "2012-10-17", "Statement": [ { "Sid": "Route53LogsToCloudWatchLogs", "Effect": "Allow", "Principal": { "Service": [ "route53.amazonaws.com" ] }, "Action": "logs:PutLogEvents", "Resource": "logArn", "Condition": { "ArnLike": { "aws:SourceArn": "myRoute53ResourceArn" }, "StringEquals": { "aws:SourceAccount": "myAwsAccountId" } } } ] }
• "policyName": Name of the new policy. This parameter is required.
source
Main.Cloudwatch_Logs.put_retention_policyMethod
put_retention_policy(log_group_name, retention_in_days)
put_retention_policy(log_group_name, retention_in_days, params::Dict{String,<:Any})

Sets the retention of the specified log group. With a retention policy, you can configure the number of days for which to retain log events in the specified log group. CloudWatch Logs doesn’t immediately delete log events when they reach their retention setting. It typically takes up to 72 hours after that before log events are deleted, but in rare situations might take longer. To illustrate, imagine that you change a log group to have a longer retention setting when it contains log events that are past the expiration date, but haven’t been deleted. Those log events will take up to 72 hours to be deleted after the new retention date is reached. To make sure that log data is deleted permanently, keep a log group at its lower retention setting until 72 hours after the previous retention period ends. Alternatively, wait to change the retention setting until you confirm that the earlier log events are deleted.

Arguments

• log_group_name: The name of the log group.
• retention_in_days:
source
Main.Cloudwatch_Logs.put_subscription_filterMethod
put_subscription_filter(destination_arn, filter_name, filter_pattern, log_group_name)
put_subscription_filter(destination_arn, filter_name, filter_pattern, log_group_name, params::Dict{String,<:Any})

Creates or updates a subscription filter and associates it with the specified log group. With subscription filters, you can subscribe to a real-time stream of log events ingested through PutLogEvents and have them delivered to a specific destination. When log events are sent to the receiving service, they are Base64 encoded and compressed with the GZIP format. The following destinations are supported for subscription filters: An Amazon Kinesis data stream belonging to the same account as the subscription filter, for same-account delivery. A logical destination that belongs to a different account, for cross-account delivery. An Amazon Kinesis Data Firehose delivery stream that belongs to the same account as the subscription filter, for same-account delivery. An Lambda function that belongs to the same account as the subscription filter, for same-account delivery. Each log group can have up to two subscription filters associated with it. If you are updating an existing filter, you must specify the correct name in filterName. To perform a PutSubscriptionFilter operation, you must also have the iam:PassRole permission.

Arguments

• destination_arn: The ARN of the destination to deliver matching log events to. Currently, the supported destinations are: An Amazon Kinesis stream belonging to the same account as the subscription filter, for same-account delivery. A logical destination (specified using an ARN) belonging to a different account, for cross-account delivery. If you're setting up a cross-account subscription, the destination must have an IAM policy associated with it. The IAM policy must allow the sender to send logs to the destination. For more information, see PutDestinationPolicy. A Kinesis Data Firehose delivery stream belonging to the same account as the subscription filter, for same-account delivery. A Lambda function belonging to the same account as the subscription filter, for same-account delivery.
• filter_name: A name for the subscription filter. If you are updating an existing filter, you must specify the correct name in filterName. To find the name of the filter currently associated with a log group, use DescribeSubscriptionFilters.
• filter_pattern: A filter pattern for subscribing to a filtered stream of log events.
• log_group_name: The name of the log group.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "distribution": The method used to distribute log data to the destination. By default, log data is grouped by log stream, but the grouping can be set to random for a more even distribution. This property is only applicable when the destination is an Amazon Kinesis data stream.
• "roleArn": The ARN of an IAM role that grants CloudWatch Logs permissions to deliver ingested log events to the destination stream. You don't need to provide the ARN when you are working with a logical destination for cross-account delivery.
source
Main.Cloudwatch_Logs.start_queryMethod
start_query(end_time, query_string, start_time)
start_query(end_time, query_string, start_time, params::Dict{String,<:Any})

Schedules a query of a log group using CloudWatch Logs Insights. You specify the log group and time range to query and the query string to use. For more information, see CloudWatch Logs Insights Query Syntax. Queries time out after 15 minutes of runtime. If your queries are timing out, reduce the time range being searched or partition your query into a number of queries. If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account to start a query in a linked source account. For more information, see CloudWatch cross-account observability. For a cross-account StartQuery operation, the query definition must be defined in the monitoring account. You can have up to 20 concurrent CloudWatch Logs insights queries, including queries that have been added to dashboards.

Arguments

• end_time: The end of the time range to query. The range is inclusive, so the specified end time is included in the query. Specified as epoch time, the number of seconds since January 1, 1970, 00:00:00 UTC.
• query_string: The query string to use. For more information, see CloudWatch Logs Insights Query Syntax.
• start_time: The beginning of the time range to query. The range is inclusive, so the specified start time is included in the query. Specified as epoch time, the number of seconds since January 1, 1970, 00:00:00 UTC.

Optional Parameters

Optional parameters can be passed as a params::Dict{String,<:Any}. Valid keys are:

• "limit": The maximum number of log events to return in the query. If the query string uses the fields command, only the specified fields and their values are returned. The default is 1000.
• "logGroupIdentifiers": The list of log groups to query. You can include up to 50 log groups. You can specify them by the log group name or ARN. If a log group that you're querying is in a source account and you're using a monitoring account, you must specify the ARN of the log group here. The query definition must also be defined in the monitoring account. If you specify an ARN, the ARN can't end with an asterisk (*). A StartQuery operation must include exactly one of the following parameters: logGroupName, logGroupNames or logGroupIdentifiers.
• "logGroupName": The log group on which to perform the query. A StartQuery operation must include exactly one of the following parameters: logGroupName, logGroupNames or logGroupIdentifiers.
• "logGroupNames": The list of log groups to be queried. You can include up to 50 log groups. A StartQuery operation must include exactly one of the following parameters: logGroupName, logGroupNames or logGroupIdentifiers.
source
Main.Cloudwatch_Logs.stop_queryMethod
stop_query(query_id)
stop_query(query_id, params::Dict{String,<:Any})

Stops a CloudWatch Logs Insights query that is in progress. If the query has already ended, the operation returns an error indicating that the specified query is not running.

Arguments

• query_id: The ID number of the query to stop. To find this ID number, use DescribeQueries.
source
Main.Cloudwatch_Logs.tag_log_groupMethod
tag_log_group(log_group_name, tags)
tag_log_group(log_group_name, tags, params::Dict{String,<:Any})

Arguments

• log_group_name: The name of the log group.
• tags: The key-value pairs to use for the tags.
source
Main.Cloudwatch_Logs.tag_resourceMethod
tag_resource(resource_arn, tags)
tag_resource(resource_arn, tags, params::Dict{String,<:Any})

Assigns one or more tags (key-value pairs) to the specified CloudWatch Logs resource. Currently, the only CloudWatch Logs resources that can be tagged are log groups and destinations. Tags can help you organize and categorize your resources. You can also use them to scope user permissions by granting a user permission to access or change only resources with certain tag values. Tags don't have any semantic meaning to Amazon Web Services and are interpreted strictly as strings of characters. You can use the TagResource action with a resource that already has tags. If you specify a new tag key for the alarm, this tag is appended to the list of tags associated with the alarm. If you specify a tag key that is already associated with the alarm, the new tag value that you specify replaces the previous value for that tag. You can associate as many as 50 tags with a CloudWatch Logs resource.

Arguments

• resource_arn: The ARN of the resource that you're adding tags to. The ARN format of a log group is arn:aws:logs:Region:account-id:log-group:log-group-name The ARN format of a destination is arn:aws:logs:Region:account-id:destination:destination-name For more information about ARN format, see CloudWatch Logs resources and operations.
• tags: The list of key-value pairs to associate with the resource.
source
Main.Cloudwatch_Logs.test_metric_filterMethod
test_metric_filter(filter_pattern, log_event_messages)
test_metric_filter(filter_pattern, log_event_messages, params::Dict{String,<:Any})

Tests the filter pattern of a metric filter against a sample of log event messages. You can use this operation to validate the correctness of a metric filter pattern.

Arguments

• filter_pattern:
• log_event_messages: The log event messages to test.
source
Main.Cloudwatch_Logs.untag_log_groupMethod
untag_log_group(log_group_name, tags)
untag_log_group(log_group_name, tags, params::Dict{String,<:Any})

The UntagLogGroup operation is on the path to deprecation. We recommend that you use UntagResource instead. Removes the specified tags from the specified log group. To list the tags for a log group, use ListTagsForResource. To add tags, use TagResource. CloudWatch Logs doesn’t support IAM policies that prevent users from assigning specified tags to log groups using the aws:Resource/key-name or aws:TagKeys condition keys.

Arguments

• log_group_name: The name of the log group.
• tags: The tag keys. The corresponding tags are removed from the log group.
source
Main.Cloudwatch_Logs.untag_resourceMethod
untag_resource(resource_arn, tag_keys)
untag_resource(resource_arn, tag_keys, params::Dict{String,<:Any})

Removes one or more tags from the specified resource.

Arguments

• resource_arn: The ARN of the CloudWatch Logs resource that you're removing tags from. The ARN format of a log group is arn:aws:logs:Region:account-id:log-group:log-group-name The ARN format of a destination is arn:aws:logs:Region:account-id:destination:destination-name For more information about ARN format, see CloudWatch Logs resources and operations.
• tag_keys: The list of tag keys to remove from the resource.
source