Class: Aws::SNS::Topic

Inherits:
Object
  • Object
show all
Defined in:
gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb

Defined Under Namespace

Classes: Collection

Read-Only Attributes collapse

Actions collapse

Associations collapse

Instance Method Summary collapse

Constructor Details

#initialize(arn, options = {}) ⇒ Topic #initialize(options = {}) ⇒ Topic

Returns a new instance of Topic.

Overloads:

  • #initialize(arn, options = {}) ⇒ Topic

    Parameters:

    • arn (String)

    Options Hash (options):

  • #initialize(options = {}) ⇒ Topic

    Options Hash (options):

    • :arn (required, String)
    • :client (Client)


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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 22

def initialize(*args)
  options = Hash === args.last ? args.pop.dup : {}
  @arn = extract_arn(args, options)
  @data = options.delete(:data)
  @client = options.delete(:client) || Client.new(options)
  @waiter_block_warned = false
end

Instance Method Details

#add_permission(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


topic.add_permission({
  label: "label", # required
  aws_account_id: ["delegate"], # required
  action_name: ["action"], # required
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :label (required, String)

    A unique identifier for the new policy statement.

  • :aws_account_id (required, Array<String>)

    The AWS account IDs of the users (principals) who will be given access to the specified actions. The users must have AWS accounts, but do not need to be signed up for this service.

  • :action_name (required, Array<String>)

    The action you want to allow for the specified principal(s).

    Valid values: Any Amazon SNS action name, for example Publish.

Returns:

  • (EmptyStructure)


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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 162

def add_permission(options = {})
  options = options.merge(topic_arn: @arn)
  resp = @client.add_permission(options)
  resp.data
end

#arnString

Returns:

  • (String)


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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 33

def arn
  @arn
end

#attributesHash<String,String>

A map of the topic's attributes. Attributes in this map include the following:

  • DeliveryPolicy – The JSON serialization of the topic's delivery policy.

  • DisplayName – The human-readable name used in the From field for notifications to email and email-json endpoints.

  • Owner – The AWS account ID of the topic's owner.

  • Policy – The JSON serialization of the topic's access control policy.

  • SubscriptionsConfirmed – The number of confirmed subscriptions for the topic.

  • SubscriptionsDeleted – The number of deleted subscriptions for the topic.

  • SubscriptionsPending – The number of subscriptions pending confirmation for the topic.

  • TopicArn – The topic's ARN.

  • EffectiveDeliveryPolicy – The JSON serialization of the effective delivery policy, taking system defaults into account.

The following attribute applies only to server-side-encryption:

  • KmsMasterKeyId - The ID of an AWS-managed customer master key (CMK) for Amazon SNS or a custom CMK. For more information, see Key Terms. For more examples, see KeyId in the AWS Key Management Service API Reference.

^

The following attributes apply only to FIFO topics:

  • FifoTopic – When this is set to true, a FIFO topic is created.

  • ContentBasedDeduplication – Enables content-based deduplication for FIFO topics.

    • By default, ContentBasedDeduplication is set to false. If you create a FIFO topic and this attribute is false, you must specify a value for the MessageDeduplicationId parameter for the Publish action.

    • When you set ContentBasedDeduplication to true, Amazon SNS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

      (Optional) To override the generated value, you can specify a value for the the MessageDeduplicationId parameter for the Publish action.

Returns:

  • (Hash<String,String>)


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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 102

def attributes
  data[:attributes]
end

#clientClient

Returns:



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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 109

def client
  @client
end

#confirm_subscription(options = {}) ⇒ Subscription

Examples:

Request syntax with placeholder values


subscription = topic.confirm_subscription({
  token: "token", # required
  authenticate_on_unsubscribe: "authenticateOnUnsubscribe",
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :token (required, String)

    Short-lived token sent to an endpoint during the Subscribe action.

  • :authenticate_on_unsubscribe (String)

    Disallows unauthenticated unsubscribes of the subscription. If the value of this parameter is true and the request has an AWS signature, then only the topic owner and the subscription owner can unsubscribe the endpoint. The unsubscribe action requires AWS authentication.

Returns:



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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 184

def confirm_subscription(options = {})
  options = options.merge(topic_arn: @arn)
  resp = @client.confirm_subscription(options)
  Subscription.new(
    arn: resp.data.subscription_arn,
    client: @client
  )
end

#dataTypes::GetTopicAttributesResponse

Returns the data for this Aws::SNS::Topic. Calls Client#get_topic_attributes if #data_loaded? is false.

Returns:



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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 129

def data
  load unless @data
  @data
end

#data_loaded?Boolean

Returns true if this resource is loaded. Accessing attributes or #data on an unloaded resource will trigger a call to #load.

Returns:

  • (Boolean)

    Returns true if this resource is loaded. Accessing attributes or #data on an unloaded resource will trigger a call to #load.



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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 137

def data_loaded?
  !!@data
end

#delete(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


topic.delete()

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Returns:

  • (EmptyStructure)


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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 198

def delete(options = {})
  options = options.merge(topic_arn: @arn)
  resp = @client.delete_topic(options)
  resp.data
end

#loadself Also known as: reload

Loads, or reloads #data for the current Aws::SNS::Topic. Returns self making it possible to chain methods.

topic.reload.data

Returns:

  • (self)


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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 119

def load
  resp = @client.get_topic_attributes(topic_arn: @arn)
  @data = resp.data
  self
end

#publish(options = {}) ⇒ Types::PublishResponse

Examples:

Request syntax with placeholder values


topic.publish({
  target_arn: "String",
  phone_number: "String",
  message: "message", # required
  subject: "subject",
  message_structure: "messageStructure",
  message_attributes: {
    "String" => {
      data_type: "String", # required
      string_value: "String",
      binary_value: "data",
    },
  },
  message_deduplication_id: "String",
  message_group_id: "String",
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :target_arn (String)

    If you don't specify a value for the TargetArn parameter, you must specify a value for the PhoneNumber or TopicArn parameters.

  • :phone_number (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.

  • :message (required, 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).

  • :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.

  • :message_structure (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

  • :message_attributes (Hash<String,Types::MessageAttributeValue>)

    Message attributes for Publish action.

  • :message_deduplication_id (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.

  • :message_group_id (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.

Returns:



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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 339

def publish(options = {})
  options = options.merge(topic_arn: @arn)
  resp = @client.publish(options)
  resp.data
end

#remove_permission(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


topic.remove_permission({
  label: "label", # required
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :label (required, String)

    The unique label of the statement you want to remove.

Returns:

  • (EmptyStructure)


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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 354

def remove_permission(options = {})
  options = options.merge(topic_arn: @arn)
  resp = @client.remove_permission(options)
  resp.data
end

#set_attributes(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


topic.set_attributes({
  attribute_name: "attributeName", # required
  attribute_value: "attributeValue",
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :attribute_name (required, String)

    A map of attributes with their corresponding values.

    The following lists the names, descriptions, and values of the special request parameters that the SetTopicAttributes action uses:

    • DeliveryPolicy – The policy that defines how Amazon SNS retries failed deliveries to HTTP/S endpoints.

    • DisplayName – The display name to use for a topic with SMS subscriptions.

    • Policy – The policy that defines who can access your topic. By default, only the topic owner can publish or subscribe to the topic.

    The following attribute applies only to server-side-encryption:

    • KmsMasterKeyId – The ID of an AWS-managed customer master key (CMK) for Amazon SNS or a custom CMK. For more information, see Key Terms. For more examples, see KeyId in the AWS Key Management Service API Reference.

    ^

    The following attribute applies only to FIFO topics:

    • ContentBasedDeduplication – Enables content-based deduplication for FIFO topics.

      • By default, ContentBasedDeduplication is set to false. If you create a FIFO topic and this attribute is false, you must specify a value for the MessageDeduplicationId parameter for the Publish action.

      • When you set ContentBasedDeduplication to true, Amazon SNS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message).

        (Optional) To override the generated value, you can specify a value for the the MessageDeduplicationId parameter for the Publish action.

  • :attribute_value (String)

    The new value for the attribute.

Returns:

  • (EmptyStructure)


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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 419

def set_attributes(options = {})
  options = options.merge(topic_arn: @arn)
  resp = @client.set_topic_attributes(options)
  resp.data
end

#subscribe(options = {}) ⇒ Subscription

Examples:

Request syntax with placeholder values


subscription = topic.subscribe({
  protocol: "protocol", # required
  endpoint: "endpoint",
  attributes: {
    "attributeName" => "attributeValue",
  },
  return_subscription_arn: false,
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :protocol (required, String)

    The protocol that you want to use. Supported protocols include:

    • http – delivery of JSON-encoded message via HTTP POST

    • https – delivery of JSON-encoded message via HTTPS POST

    • email – delivery of message via SMTP

    • email-json – delivery of JSON-encoded message via SMTP

    • sms – delivery of message via SMS

    • sqs – delivery of JSON-encoded message to an Amazon SQS queue

    • application – delivery of JSON-encoded message to an EndpointArn for a mobile app and device

    • lambda – delivery of JSON-encoded message to an AWS Lambda function

    • firehose – delivery of JSON-encoded message to an Amazon Kinesis Data Firehose delivery stream.

  • :endpoint (String)

    The endpoint that you want to receive notifications. Endpoints vary by protocol:

    • For the http protocol, the (public) endpoint is a URL beginning with http://.

    • For the https protocol, the (public) endpoint is a URL beginning with https://.

    • For the email protocol, the endpoint is an email address.

    • For the email-json protocol, the endpoint is an email address.

    • For the sms protocol, the endpoint is a phone number of an SMS-enabled device.

    • For the sqs protocol, the endpoint is the ARN of an Amazon SQS queue.

    • For the application protocol, the endpoint is the EndpointArn of a mobile app and device.

    • For the lambda protocol, the endpoint is the ARN of an AWS Lambda function.

    • For the firehose protocol, the endpoint is the ARN of an Amazon Kinesis Data Firehose delivery stream.

  • :attributes (Hash<String,String>)

    A map of attributes with their corresponding values.

    The following lists the names, descriptions, and values of the special request parameters that the SetTopicAttributes action uses:

    • DeliveryPolicy – The policy that defines how Amazon SNS retries failed deliveries to HTTP/S endpoints.

    • FilterPolicy – The simple JSON object that lets your subscriber receive only a subset of messages, rather than receiving every message published to the topic.

    • RawMessageDelivery – When set to true, enables raw message delivery to Amazon SQS or HTTP/S endpoints. This eliminates the need for the endpoints to process JSON formatting, which is otherwise created for Amazon SNS metadata.

    • RedrivePolicy – When specified, sends undeliverable messages to the specified Amazon SQS dead-letter queue. Messages that can't be delivered due to client errors (for example, when the subscribed endpoint is unreachable) or server errors (for example, when the service that powers the subscribed endpoint becomes unavailable) are held in the dead-letter queue for further analysis or reprocessing.

    The following attribute applies only to Amazon Kinesis Data Firehose delivery stream subscriptions:

    • SubscriptionRoleArn – The ARN of the IAM role that has the following:

      • Permission to write to the Kinesis Data Firehose delivery stream

      • Amazon SNS listed as a trusted entity

      Specifying a valid ARN for this attribute is required for Kinesis Data Firehose delivery stream subscriptions. For more information, see Fanout to Kinesis Data Firehose delivery streams in the Amazon SNS Developer Guide.

  • :return_subscription_arn (Boolean)

    Sets whether the response from the Subscribe request includes the subscription ARN, even if the subscription is not yet confirmed.

    If you set this parameter to true, the response includes the ARN in all cases, even if the subscription is not yet confirmed. In addition to the ARN for confirmed subscriptions, the response also includes the pending subscription ARN value for subscriptions that aren't yet confirmed. A subscription becomes confirmed when the subscriber calls the ConfirmSubscription action with a confirmation token.

    The default value is false.

Returns:



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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 545

def subscribe(options = {})
  options = options.merge(topic_arn: @arn)
  resp = @client.subscribe(options)
  Subscription.new(
    arn: resp.data.subscription_arn,
    client: @client
  )
end

#subscriptions(options = {}) ⇒ Subscription::Collection

Examples:

Request syntax with placeholder values


topic.subscriptions()

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Returns:



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# File 'gems/aws-sdk-sns/lib/aws-sdk-sns/topic.rb', line 561

def subscriptions(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(topic_arn: @arn)
    resp = @client.list_subscriptions_by_topic(options)
    resp.each_page do |page|
      batch = []
      page.data.subscriptions.each do |s|
        batch << Subscription.new(
          arn: s.subscription_arn,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  Subscription::Collection.new(batches)
end