AWS Tools for Windows PowerShell
Command Reference

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Synopsis

Calls the Amazon Simple Notification Service (SNS) Publish API operation.

Syntax

Publish-SNSMessage
-TopicArn <String>
-Message <String>
-MessageStructure <String>
-Subject <String>
-MessageAttribute <Hashtable>
-MessageDeduplicationId <String>
-MessageGroupId <String>
-PhoneNumber <String>
-TargetArn <String>
-Select <String>
-PassThru <SwitchParameter>
-Force <SwitchParameter>
-ClientConfig <AmazonSimpleNotificationServiceConfig>

Description

Sends a message to an Amazon SNS topic, a text message (SMS message) directly to a phone number, or a message to a mobile platform endpoint (when you specify the TargetArn). If you send a message to a topic, Amazon SNS delivers the message to each endpoint that is subscribed to the topic. The format of the message depends on the notification protocol for each subscribed endpoint. When a messageId is returned, the message is saved and Amazon SNS immediately delivers it to subscribers. To use the Publish action for publishing a message to a mobile endpoint, such as an app on a Kindle device or mobile phone, you must specify the EndpointArn for the TargetArn parameter. The EndpointArn is returned when making a call with the CreatePlatformEndpoint action. For more information about formatting messages, see Send Custom Platform-Specific Payloads in Messages to Mobile Devices. You can publish messages only to topics and endpoints in the same Amazon Web Services Region.

Parameters

-ClientConfig <AmazonSimpleNotificationServiceConfig>
Amazon.PowerShell.Cmdlets.SNS.AmazonSimpleNotificationServiceClientCmdlet.ClientConfig
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-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?True (ByPropertyName)
-Message <String>
The message you want to send.If you are publishing to a topic and you want to send the same message to all transport protocols, include the text of the message as a String value. If you want to send different messages for each transport protocol, set the value of the MessageStructure parameter to json and use a JSON object for the Message parameter. Constraints:
  • With the exception of SMS, messages must be UTF-8 encoded strings and at most 256 KB in size (262,144 bytes, not 262,144 characters).
  • For SMS, each message can contain up to 140 characters. This character limit depends on the encoding schema. For example, an SMS message can contain 160 GSM characters, 140 ASCII characters, or 70 UCS-2 characters.If you publish a message that exceeds this size limit, Amazon SNS sends the message as multiple messages, each fitting within the size limit. Messages aren't truncated mid-word but are cut off at whole-word boundaries.The total size limit for a single SMS Publish action is 1,600 characters.
JSON-specific constraints:
  • Keys in the JSON object that correspond to supported transport protocols must have simple JSON string values.
  • The values will be parsed (unescaped) before they are used in outgoing messages.
  • Outbound notifications are JSON encoded (meaning that the characters will be reescaped for sending).
  • Values have a minimum length of 0 (the empty string, "", is allowed).
  • Values have a maximum length bounded by the overall message size (so, including multiple protocols may limit message sizes).
  • Non-string values will cause the key to be ignored.
  • Keys that do not correspond to supported transport protocols are ignored.
  • Duplicate keys are not allowed.
  • Failure to parse or validate any key or value in the message will cause the Publish call to return an error (no partial delivery).
Required?True
Position?2
Accept pipeline input?True (ByPropertyName)
-MessageAttribute <Hashtable>
Message attributes for Publish action.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesMessageAttributes
-MessageDeduplicationId <String>
This parameter applies only to FIFO (first-in-first-out) topics. The MessageDeduplicationId can contain up to 128 alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~).Every message must have a unique MessageDeduplicationId, which is a token used for deduplication of sent messages. If a message with a particular MessageDeduplicationId is sent successfully, any message sent with the same MessageDeduplicationId during the 5-minute deduplication interval is treated as a duplicate. If the topic has ContentBasedDeduplication set, the system generates a MessageDeduplicationId based on the contents of the message. Your MessageDeduplicationId overrides the generated one.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-MessageGroupId <String>
This parameter applies only to FIFO (first-in-first-out) topics. The MessageGroupId can contain up to 128 alphanumeric characters (a-z, A-Z, 0-9) and punctuation (!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~).The MessageGroupId is a tag that specifies that a message belongs to a specific message group. Messages that belong to the same message group are processed in a FIFO manner (however, messages in different message groups might be processed out of order). Every message must include a MessageGroupId.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-MessageStructure <String>
Set MessageStructure to json if you want to send a different message for each protocol. For example, using one publish action, you can send a short message to your SMS subscribers and a longer message to your email subscribers. If you set MessageStructure to json, the value of the Message parameter must:
  • be a syntactically valid JSON object; and
  • contain at least a top-level JSON key of "default" with a value that is a string.
You can define other top-level keys that define the message you want to send to a specific transport protocol (e.g., "http").Valid value: json
Required?False
Position?3
Accept pipeline input?True (ByPropertyName)
-PassThru <SwitchParameter>
Changes the cmdlet behavior to return the value passed to the TopicArn parameter. The -PassThru parameter is deprecated, use -Select '^TopicArn' instead. This parameter will be removed in a future version.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-PhoneNumber <String>
The phone number to which you want to deliver an SMS message. Use E.164 format.If you don't specify a value for the PhoneNumber parameter, you must specify a value for the TargetArn or TopicArn parameters.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-Select <String>
Use the -Select parameter to control the cmdlet output. The default value is 'MessageId'. Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.SimpleNotificationService.Model.PublishResponse). Specifying the name of a property of type Amazon.SimpleNotificationService.Model.PublishResponse will result in that property being returned. Specifying -Select '^ParameterName' will result in the cmdlet returning the selected cmdlet parameter value.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-Subject <String>
Optional parameter to be used as the "Subject" line when the message is delivered to email endpoints. This field will also be included, if present, in the standard JSON messages delivered to other endpoints.Constraints: Subjects must be ASCII text that begins with a letter, number, or punctuation mark; must not include line breaks or control characters; and must be less than 100 characters long.
Required?False
Position?4
Accept pipeline input?True (ByPropertyName)
-TargetArn <String>
If you don't specify a value for the TargetArn parameter, you must specify a value for the PhoneNumber or TopicArn parameters.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
-TopicArn <String>
The topic you want to publish to.If you don't specify a value for the TopicArn parameter, you must specify a value for the PhoneNumber or TargetArn parameters.
Required?False
Position?1
Accept pipeline input?True (ByValue, ByPropertyName)

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?True (ByPropertyName)
AliasesAK
-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?True (ByValue, ByPropertyName)
-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?True (ByPropertyName)
-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?True (ByValue, ByPropertyName)
-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.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?True (ByPropertyName)
AliasesAWSProfilesLocation, 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?True (ByPropertyName)
AliasesStoredCredentials, AWSProfileName
-Region <Object>
The system name of an AWS region or an AWSRegion instance. This governs the endpoint that will be used when calling service operations. Note that the AWS resources referenced in a call are usually region-specific.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesRegionToCall
-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?True (ByPropertyName)
AliasesSK, SecretAccessKey
-SessionToken <String>
The session token if the access and secret keys are temporary session-based credentials.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)
AliasesST

Outputs

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

Examples

Example 1

Publish-SNSMessage -TopicArn "arn:aws:sns:us-west-2:123456789012:my-topic" -Message "Hello" -MessageAttribute @{'City'=[Amazon.SimpleNotificationService.Model.MessageAttributeValue]@{DataType='String'; StringValue ='AnyCity'}}
This example shows publishing a message with a single MessageAttribute declared inline.

Example 2

$cityAttributeValue = New-Object Amazon.SimpleNotificationService.Model.MessageAttributeValue
$cityAttributeValue.DataType = "String"
$cityAttributeValue.StringValue = "AnyCity"

$populationAttributeValue = New-Object Amazon.SimpleNotificationService.Model.MessageAttributeValue
$populationAttributeValue.DataType = "Number"
$populationAttributeValue.StringValue = "1250800"

$messageAttributes = New-Object System.Collections.Hashtable
$messageAttributes.Add("City", $cityAttributeValue)
$messageAttributes.Add("Population", $populationAttributeValue)

Publish-SNSMessage -TopicArn "arn:aws:sns:us-west-2:123456789012:my-topic" -Message "Hello" -MessageAttribute $messageAttributes
        
This example shows publishing a message with multiple MessageAttributes declared in advance.
Developer Guide
Service API Reference
AWS Tools for PowerShell User Guide

Supported Version

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