AWS Tools for Windows PowerShell
Command Reference

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Synopsis

Calls the Amazon CloudWatch Events PutRule API operation.

Syntax

Write-CWERule
-Name <String>
-Description <String>
-EventBusName <String>
-EventPattern <String>
-RoleArn <String>
-ScheduleExpression <String>
-State <RuleState>
-Tag <Tag[]>
-Force <SwitchParameter>

Description

Creates or updates the specified rule. Rules are enabled by default or based on value of the state. You can disable a rule using DisableRule. A single rule watches for events from a single event bus. Events generated by AWS services go to your account's default event bus. Events generated by SaaS partner services or applications go to the matching partner event bus. If you have custom applications or services, you can specify whether their events go to your default event bus or a custom event bus that you have created. For more information, see CreateEventBus. If you're updating an existing rule, the rule is replaced with what you specify in this PutRule command. If you omit arguments in PutRule, the old values for those arguments aren't kept. Instead, they're replaced with null values. When you create or update a rule, incoming events might not immediately start matching to new or updated rules. Allow a short period of time for changes to take effect. A rule must contain at least an EventPattern or ScheduleExpression. Rules with EventPatterns are triggered when a matching event is observed. Rules with ScheduleExpressions self-trigger based on the given schedule. A rule can have both an EventPattern and a ScheduleExpression, in which case the rule triggers on matching events as well as on a schedule. When you initially create a rule, you can optionally assign one or more tags to the rule. 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 rules with certain tag values. To use the PutRule operation and assign tags, you must have both the events:PutRule and events:TagResource permissions. If you are updating an existing rule, any tags you specify in the PutRule operation are ignored. To update the tags of an existing rule, use TagResource and UntagResource. Most services in AWS treat : or / as the same character in Amazon Resource Names (ARNs). However, EventBridge uses an exact match in event patterns and rules. Be sure to use the correct ARN characters when creating event patterns so that they match the ARN syntax in the event that you want to match. In EventBridge, you could create rules that lead to infinite loops, where a rule is fired repeatedly. For example, a rule might detect that ACLs have changed on an S3 bucket, and trigger software to change them to the desired state. If you don't write the rule carefully, the subsequent change to the ACLs fires the rule again, creating an infinite loop. To prevent this, write the rules so that the triggered actions don't refire the same rule. For example, your rule could fire only if ACLs are found to be in a bad state, instead of after any change. An infinite loop can quickly cause higher than expected charges. We recommend that you use budgeting, which alerts you when charges exceed your specified limit. For more information, see Managing Your Costs with Budgets.

Parameters

-Description <String>
A description of the rule.
Required?False
Position?Named
Accept pipeline input?False
-EventBusName <String>
The event bus to associate with this rule. If you omit this, the default event bus is used.
Required?False
Position?Named
Accept pipeline input?False
-EventPattern <String>
The event pattern. For more information, see Event Patterns in the Amazon EventBridge User Guide.
Required?False
Position?Named
Accept pipeline input?False
-Force <SwitchParameter>
This parameter overrides confirmation prompts to force the cmdlet to continue its operation. This parameter should always be used with caution.
Required?False
Position?Named
Accept pipeline input?False
-Name <String>
The name of the rule that you're creating or updating.
Required?False
Position?1
Accept pipeline input?True (ByValue, ByPropertyName)
-RoleArn <String>
The Amazon Resource Name (ARN) of the IAM role associated with the rule.
Required?False
Position?Named
Accept pipeline input?False
-ScheduleExpression <String>
The scheduling expression: for example, "cron(0 20 * * ? *)" or "rate(5 minutes)".
Required?False
Position?Named
Accept pipeline input?False
-State <RuleState>
Indicates whether the rule is enabled or disabled.
Required?False
Position?Named
Accept pipeline input?False
-Tag <Tag[]>
The list of key-value pairs to associate with the rule.
Required?False
Position?Named
Accept pipeline input?False
AliasesTags

Common Credential and Region Parameters

-AccessKey <String>
The AWS access key for the user account. This can be a temporary access key if the corresponding session token is supplied to the -SessionToken parameter.
Required? False
Position? Named
Accept pipeline input? False
Aliases AK
-Credential <AWSCredentials>
An AWSCredentials object instance containing access and secret key information, and optionally a token for session-based credentials.
Required? False
Position? Named
Accept pipeline input? False
-ProfileLocation <String>

Used to specify the name and location of the ini-format credential file (shared with the AWS CLI and other AWS SDKs)

If this optional parameter is omitted this cmdlet will search the encrypted credential file used by the AWS SDK for .NET and AWS Toolkit for Visual Studio first. If the profile is not found then the cmdlet will search in the ini-format credential file at the default location: (user's home directory)\.aws\credentials. Note that the encrypted credential file is not supported on all platforms. It will be skipped when searching for profiles on Windows Nano Server, Mac, and Linux platforms.

If this parameter is specified then this cmdlet will only search the ini-format credential file at the location given.

As the current folder can vary in a shell or during script execution it is advised that you use specify a fully qualified path instead of a relative path.

Required? False
Position? Named
Accept pipeline input? False
Aliases AWSProfilesLocation, ProfilesLocation
-ProfileName <String>
The user-defined name of an AWS credentials or SAML-based role profile containing credential information. The profile is expected to be found in the secure credential file shared with the AWS SDK for .NET and AWS Toolkit for Visual Studio. You can also specify the name of a profile stored in the .ini-format credential file used with the AWS CLI and other AWS SDKs.
Required? False
Position? Named
Accept pipeline input? False
Aliases AWSProfileName, StoredCredentials
-NetworkCredential <PSCredential>
Used with SAML-based authentication when ProfileName references a SAML role profile. Contains the network credentials to be supplied during authentication with the configured identity provider's endpoint. This parameter is not required if the user's default network identity can or should be used during authentication.
Required? False
Position? Named
Accept pipeline input? False
-SecretKey <String>
The AWS secret key for the user account. This can be a temporary secret key if the corresponding session token is supplied to the -SessionToken parameter.
Required? False
Position? Named
Accept pipeline input? False
Aliases SecretAccessKey, SK
-SessionToken <String>
The session token if the access and secret keys are temporary session-based credentials.
Required? False
Position? Named
Accept pipeline input? False
Aliases ST
-Region <String>
The system name of the AWS region in which the operation should be invoked. For example, us-east-1, eu-west-1 etc.
Required? False
Position? Named
Accept pipeline input? False
Aliases RegionToCall
-EndpointUrl <String>

The endpoint to make the call against.

Note: This parameter is primarily for internal AWS use and is not required/should not be specified for normal usage. The cmdlets normally determine which endpoint to call based on the region specified to the -Region parameter or set as default in the shell (via Set-DefaultAWSRegion). Only specify this parameter if you must direct the call to a specific custom endpoint.

Required? False
Position? Named
Accept pipeline input? False

Inputs

You can pipe a String object to this cmdlet for the Name parameter.

Outputs

This cmdlet returns a System.String object. The service call response (type Amazon.CloudWatchEvents.Model.PutRuleResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack.

Supported Version

AWS Tools for PowerShell: 2.x.y.z