policyDocument |
[required] Specify the policy, in JSON.
Data protection policy
A data protection 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, 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 the two DataIdentifer arrays must match exactly.
In addition to the two JSON blocks, the policyDocument can also
include Name , Description , and Version fields. The Name is
different than the operation's policyName parameter, and is used as a
dimension when CloudWatch Logs reports audit findings metrics to
CloudWatch.
The JSON specified in policyDocument can be up to 30,720 characters
long.
Subscription filter policy
A subscription filter policy can include the following attributes in a
JSON block:
-
DestinationArn The ARN of the destination to deliver log events
to. Supported destinations are:
An Kinesis Data Streams data stream in the same account as the
subscription policy, for same-account delivery.
An Firehose data stream in the same account as the subscription
policy, for same-account delivery.
A Lambda function in the same account as the subscription
policy, for same-account delivery.
A logical destination in a different account created with
put_destination , for
cross-account delivery. Kinesis Data Streams and Firehose are
supported as logical destinations.
-
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.
-
FilterPattern A filter pattern for subscribing to a filtered
stream of log events.
-
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 Kinesis Data
Streams data stream.
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selectionCriteria |
Use this parameter to apply the subscription filter policy to a subset
of log groups in the account. Currently, the only supported filter is
LogGroupName NOT IN [] . The selectionCriteria string can be up to
25KB in length. The length is determined by using its UTF-8 bytes.
Using the selectionCriteria parameter is useful to help prevent
infinite loops. For more information, see Log recursion prevention.
Specifing selectionCriteria is valid only when you specify
SUBSCRIPTION_FILTER_POLICY for policyType .
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