Cloud Pub/Sub V1 API - Class Google::Cloud::PubSub::V1::Subscription (v0.25.0)

Reference documentation and code samples for the Cloud Pub/Sub V1 API class Google::Cloud::PubSub::V1::Subscription.

A subscription resource. If none of push_config, bigquery_config, or cloud_storage_config is set, then the subscriber will pull and ack messages using API methods. At most one of these fields may be set.

Inherits

  • Object

Extended By

  • Google::Protobuf::MessageExts::ClassMethods

Includes

  • Google::Protobuf::MessageExts

Methods

#ack_deadline_seconds

def ack_deadline_seconds() -> ::Integer
Returns
  • (::Integer) — Optional. The approximate amount of time (on a best-effort basis) Pub/Sub waits for the subscriber to acknowledge receipt before resending the message. In the interval after the message is delivered and before it is acknowledged, it is considered to be outstanding. During that time period, the message will not be redelivered (on a best-effort basis).

    For pull subscriptions, this value is used as the initial value for the ack deadline. To override this value for a given message, call ModifyAckDeadline with the corresponding ack_id if using non-streaming pull or send the ack_id in a StreamingModifyAckDeadlineRequest if using streaming pull. The minimum custom deadline you can specify is 10 seconds. The maximum custom deadline you can specify is 600 seconds (10 minutes). If this parameter is 0, a default value of 10 seconds is used.

    For push delivery, this value is also used to set the request timeout for the call to the push endpoint.

    If the subscriber never acknowledges the message, the Pub/Sub system will eventually redeliver the message.

#ack_deadline_seconds=

def ack_deadline_seconds=(value) -> ::Integer
Parameter
  • value (::Integer) — Optional. The approximate amount of time (on a best-effort basis) Pub/Sub waits for the subscriber to acknowledge receipt before resending the message. In the interval after the message is delivered and before it is acknowledged, it is considered to be outstanding. During that time period, the message will not be redelivered (on a best-effort basis).

    For pull subscriptions, this value is used as the initial value for the ack deadline. To override this value for a given message, call ModifyAckDeadline with the corresponding ack_id if using non-streaming pull or send the ack_id in a StreamingModifyAckDeadlineRequest if using streaming pull. The minimum custom deadline you can specify is 10 seconds. The maximum custom deadline you can specify is 600 seconds (10 minutes). If this parameter is 0, a default value of 10 seconds is used.

    For push delivery, this value is also used to set the request timeout for the call to the push endpoint.

    If the subscriber never acknowledges the message, the Pub/Sub system will eventually redeliver the message.

Returns
  • (::Integer) — Optional. The approximate amount of time (on a best-effort basis) Pub/Sub waits for the subscriber to acknowledge receipt before resending the message. In the interval after the message is delivered and before it is acknowledged, it is considered to be outstanding. During that time period, the message will not be redelivered (on a best-effort basis).

    For pull subscriptions, this value is used as the initial value for the ack deadline. To override this value for a given message, call ModifyAckDeadline with the corresponding ack_id if using non-streaming pull or send the ack_id in a StreamingModifyAckDeadlineRequest if using streaming pull. The minimum custom deadline you can specify is 10 seconds. The maximum custom deadline you can specify is 600 seconds (10 minutes). If this parameter is 0, a default value of 10 seconds is used.

    For push delivery, this value is also used to set the request timeout for the call to the push endpoint.

    If the subscriber never acknowledges the message, the Pub/Sub system will eventually redeliver the message.

#bigquery_config

def bigquery_config() -> ::Google::Cloud::PubSub::V1::BigQueryConfig
Returns

#bigquery_config=

def bigquery_config=(value) -> ::Google::Cloud::PubSub::V1::BigQueryConfig
Parameter
Returns

#cloud_storage_config

def cloud_storage_config() -> ::Google::Cloud::PubSub::V1::CloudStorageConfig
Returns

#cloud_storage_config=

def cloud_storage_config=(value) -> ::Google::Cloud::PubSub::V1::CloudStorageConfig
Parameter
Returns

#dead_letter_policy

def dead_letter_policy() -> ::Google::Cloud::PubSub::V1::DeadLetterPolicy
Returns
  • (::Google::Cloud::PubSub::V1::DeadLetterPolicy) — Optional. A policy that specifies the conditions for dead lettering messages in this subscription. If dead_letter_policy is not set, dead lettering is disabled.

    The Pub/Sub service account associated with this subscriptions's parent project (i.e., service-{project_number}@gcp-sa-pubsub.iam.gserviceaccount.com) must have permission to Acknowledge() messages on this subscription.

#dead_letter_policy=

def dead_letter_policy=(value) -> ::Google::Cloud::PubSub::V1::DeadLetterPolicy
Parameter
  • value (::Google::Cloud::PubSub::V1::DeadLetterPolicy) — Optional. A policy that specifies the conditions for dead lettering messages in this subscription. If dead_letter_policy is not set, dead lettering is disabled.

    The Pub/Sub service account associated with this subscriptions's parent project (i.e., service-{project_number}@gcp-sa-pubsub.iam.gserviceaccount.com) must have permission to Acknowledge() messages on this subscription.

Returns
  • (::Google::Cloud::PubSub::V1::DeadLetterPolicy) — Optional. A policy that specifies the conditions for dead lettering messages in this subscription. If dead_letter_policy is not set, dead lettering is disabled.

    The Pub/Sub service account associated with this subscriptions's parent project (i.e., service-{project_number}@gcp-sa-pubsub.iam.gserviceaccount.com) must have permission to Acknowledge() messages on this subscription.

#detached

def detached() -> ::Boolean
Returns
  • (::Boolean) — Optional. Indicates whether the subscription is detached from its topic. Detached subscriptions don't receive messages from their topic and don't retain any backlog. Pull and StreamingPull requests will return FAILED_PRECONDITION. If the subscription is a push subscription, pushes to the endpoint will not be made.

#detached=

def detached=(value) -> ::Boolean
Parameter
  • value (::Boolean) — Optional. Indicates whether the subscription is detached from its topic. Detached subscriptions don't receive messages from their topic and don't retain any backlog. Pull and StreamingPull requests will return FAILED_PRECONDITION. If the subscription is a push subscription, pushes to the endpoint will not be made.
Returns
  • (::Boolean) — Optional. Indicates whether the subscription is detached from its topic. Detached subscriptions don't receive messages from their topic and don't retain any backlog. Pull and StreamingPull requests will return FAILED_PRECONDITION. If the subscription is a push subscription, pushes to the endpoint will not be made.

#enable_exactly_once_delivery

def enable_exactly_once_delivery() -> ::Boolean
Returns
  • (::Boolean) — Optional. If true, Pub/Sub provides the following guarantees for the delivery of a message with a given value of message_id on this subscription:

    • The message sent to a subscriber is guaranteed not to be resent before the message's acknowledgement deadline expires.
    • An acknowledged message will not be resent to a subscriber.

    Note that subscribers may still receive multiple copies of a message when enable_exactly_once_delivery is true if the message was published multiple times by a publisher client. These copies are considered distinct by Pub/Sub and have distinct message_id values.

#enable_exactly_once_delivery=

def enable_exactly_once_delivery=(value) -> ::Boolean
Parameter
  • value (::Boolean) — Optional. If true, Pub/Sub provides the following guarantees for the delivery of a message with a given value of message_id on this subscription:

    • The message sent to a subscriber is guaranteed not to be resent before the message's acknowledgement deadline expires.
    • An acknowledged message will not be resent to a subscriber.

    Note that subscribers may still receive multiple copies of a message when enable_exactly_once_delivery is true if the message was published multiple times by a publisher client. These copies are considered distinct by Pub/Sub and have distinct message_id values.

Returns
  • (::Boolean) — Optional. If true, Pub/Sub provides the following guarantees for the delivery of a message with a given value of message_id on this subscription:

    • The message sent to a subscriber is guaranteed not to be resent before the message's acknowledgement deadline expires.
    • An acknowledged message will not be resent to a subscriber.

    Note that subscribers may still receive multiple copies of a message when enable_exactly_once_delivery is true if the message was published multiple times by a publisher client. These copies are considered distinct by Pub/Sub and have distinct message_id values.

#enable_message_ordering

def enable_message_ordering() -> ::Boolean
Returns
  • (::Boolean) — Optional. If true, messages published with the same ordering_key in PubsubMessage will be delivered to the subscribers in the order in which they are received by the Pub/Sub system. Otherwise, they may be delivered in any order.

#enable_message_ordering=

def enable_message_ordering=(value) -> ::Boolean
Parameter
  • value (::Boolean) — Optional. If true, messages published with the same ordering_key in PubsubMessage will be delivered to the subscribers in the order in which they are received by the Pub/Sub system. Otherwise, they may be delivered in any order.
Returns
  • (::Boolean) — Optional. If true, messages published with the same ordering_key in PubsubMessage will be delivered to the subscribers in the order in which they are received by the Pub/Sub system. Otherwise, they may be delivered in any order.

#expiration_policy

def expiration_policy() -> ::Google::Cloud::PubSub::V1::ExpirationPolicy
Returns
  • (::Google::Cloud::PubSub::V1::ExpirationPolicy) — Optional. A policy that specifies the conditions for this subscription's expiration. A subscription is considered active as long as any connected subscriber is successfully consuming messages from the subscription or is issuing operations on the subscription. If expiration_policy is not set, a default policy with ttl of 31 days will be used. The minimum allowed value for expiration_policy.ttl is 1 day. If expiration_policy is set, but expiration_policy.ttl is not set, the subscription never expires.

#expiration_policy=

def expiration_policy=(value) -> ::Google::Cloud::PubSub::V1::ExpirationPolicy
Parameter
  • value (::Google::Cloud::PubSub::V1::ExpirationPolicy) — Optional. A policy that specifies the conditions for this subscription's expiration. A subscription is considered active as long as any connected subscriber is successfully consuming messages from the subscription or is issuing operations on the subscription. If expiration_policy is not set, a default policy with ttl of 31 days will be used. The minimum allowed value for expiration_policy.ttl is 1 day. If expiration_policy is set, but expiration_policy.ttl is not set, the subscription never expires.
Returns
  • (::Google::Cloud::PubSub::V1::ExpirationPolicy) — Optional. A policy that specifies the conditions for this subscription's expiration. A subscription is considered active as long as any connected subscriber is successfully consuming messages from the subscription or is issuing operations on the subscription. If expiration_policy is not set, a default policy with ttl of 31 days will be used. The minimum allowed value for expiration_policy.ttl is 1 day. If expiration_policy is set, but expiration_policy.ttl is not set, the subscription never expires.

#filter

def filter() -> ::String
Returns
  • (::String) — Optional. An expression written in the Pub/Sub filter language. If non-empty, then only PubsubMessages whose attributes field matches the filter are delivered on this subscription. If empty, then no messages are filtered out.

#filter=

def filter=(value) -> ::String
Parameter
  • value (::String) — Optional. An expression written in the Pub/Sub filter language. If non-empty, then only PubsubMessages whose attributes field matches the filter are delivered on this subscription. If empty, then no messages are filtered out.
Returns
  • (::String) — Optional. An expression written in the Pub/Sub filter language. If non-empty, then only PubsubMessages whose attributes field matches the filter are delivered on this subscription. If empty, then no messages are filtered out.

#labels

def labels() -> ::Google::Protobuf::Map{::String => ::String}
Returns

#labels=

def labels=(value) -> ::Google::Protobuf::Map{::String => ::String}
Parameter
Returns

#message_retention_duration

def message_retention_duration() -> ::Google::Protobuf::Duration
Returns
  • (::Google::Protobuf::Duration) — Optional. How long to retain unacknowledged messages in the subscription's backlog, from the moment a message is published. If retain_acked_messages is true, then this also configures the retention of acknowledged messages, and thus configures how far back in time a Seek can be done. Defaults to 7 days. Cannot be more than 7 days or less than 10 minutes.

#message_retention_duration=

def message_retention_duration=(value) -> ::Google::Protobuf::Duration
Parameter
  • value (::Google::Protobuf::Duration) — Optional. How long to retain unacknowledged messages in the subscription's backlog, from the moment a message is published. If retain_acked_messages is true, then this also configures the retention of acknowledged messages, and thus configures how far back in time a Seek can be done. Defaults to 7 days. Cannot be more than 7 days or less than 10 minutes.
Returns
  • (::Google::Protobuf::Duration) — Optional. How long to retain unacknowledged messages in the subscription's backlog, from the moment a message is published. If retain_acked_messages is true, then this also configures the retention of acknowledged messages, and thus configures how far back in time a Seek can be done. Defaults to 7 days. Cannot be more than 7 days or less than 10 minutes.

#name

def name() -> ::String
Returns
  • (::String) — Required. The name of the subscription. It must have the format "projects/{project}/subscriptions/{subscription}". {subscription} must start with a letter, and contain only letters ([A-Za-z]), numbers ([0-9]), dashes (-), underscores (_), periods (.), tildes (~), plus (+) or percent signs (%). It must be between 3 and 255 characters in length, and it must not start with "goog".

#name=

def name=(value) -> ::String
Parameter
  • value (::String) — Required. The name of the subscription. It must have the format "projects/{project}/subscriptions/{subscription}". {subscription} must start with a letter, and contain only letters ([A-Za-z]), numbers ([0-9]), dashes (-), underscores (_), periods (.), tildes (~), plus (+) or percent signs (%). It must be between 3 and 255 characters in length, and it must not start with "goog".
Returns
  • (::String) — Required. The name of the subscription. It must have the format "projects/{project}/subscriptions/{subscription}". {subscription} must start with a letter, and contain only letters ([A-Za-z]), numbers ([0-9]), dashes (-), underscores (_), periods (.), tildes (~), plus (+) or percent signs (%). It must be between 3 and 255 characters in length, and it must not start with "goog".

#push_config

def push_config() -> ::Google::Cloud::PubSub::V1::PushConfig
Returns

#push_config=

def push_config=(value) -> ::Google::Cloud::PubSub::V1::PushConfig
Parameter
Returns

#retain_acked_messages

def retain_acked_messages() -> ::Boolean
Returns
  • (::Boolean) — Optional. Indicates whether to retain acknowledged messages. If true, then messages are not expunged from the subscription's backlog, even if they are acknowledged, until they fall out of the message_retention_duration window. This must be true if you would like to Seek to a timestamp in the past to replay previously-acknowledged messages.

#retain_acked_messages=

def retain_acked_messages=(value) -> ::Boolean
Parameter
  • value (::Boolean) — Optional. Indicates whether to retain acknowledged messages. If true, then messages are not expunged from the subscription's backlog, even if they are acknowledged, until they fall out of the message_retention_duration window. This must be true if you would like to Seek to a timestamp in the past to replay previously-acknowledged messages.
Returns
  • (::Boolean) — Optional. Indicates whether to retain acknowledged messages. If true, then messages are not expunged from the subscription's backlog, even if they are acknowledged, until they fall out of the message_retention_duration window. This must be true if you would like to Seek to a timestamp in the past to replay previously-acknowledged messages.

#retry_policy

def retry_policy() -> ::Google::Cloud::PubSub::V1::RetryPolicy
Returns
  • (::Google::Cloud::PubSub::V1::RetryPolicy) — Optional. A policy that specifies how Pub/Sub retries message delivery for this subscription.

    If not set, the default retry policy is applied. This generally implies that messages will be retried as soon as possible for healthy subscribers. RetryPolicy will be triggered on NACKs or acknowledgement deadline exceeded events for a given message.

#retry_policy=

def retry_policy=(value) -> ::Google::Cloud::PubSub::V1::RetryPolicy
Parameter
  • value (::Google::Cloud::PubSub::V1::RetryPolicy) — Optional. A policy that specifies how Pub/Sub retries message delivery for this subscription.

    If not set, the default retry policy is applied. This generally implies that messages will be retried as soon as possible for healthy subscribers. RetryPolicy will be triggered on NACKs or acknowledgement deadline exceeded events for a given message.

Returns
  • (::Google::Cloud::PubSub::V1::RetryPolicy) — Optional. A policy that specifies how Pub/Sub retries message delivery for this subscription.

    If not set, the default retry policy is applied. This generally implies that messages will be retried as soon as possible for healthy subscribers. RetryPolicy will be triggered on NACKs or acknowledgement deadline exceeded events for a given message.

#state

def state() -> ::Google::Cloud::PubSub::V1::Subscription::State
Returns

#topic

def topic() -> ::String
Returns
  • (::String) — Required. The name of the topic from which this subscription is receiving messages. Format is projects/{project}/topics/{topic}. The value of this field will be _deleted-topic_ if the topic has been deleted.

#topic=

def topic=(value) -> ::String
Parameter
  • value (::String) — Required. The name of the topic from which this subscription is receiving messages. Format is projects/{project}/topics/{topic}. The value of this field will be _deleted-topic_ if the topic has been deleted.
Returns
  • (::String) — Required. The name of the topic from which this subscription is receiving messages. Format is projects/{project}/topics/{topic}. The value of this field will be _deleted-topic_ if the topic has been deleted.

#topic_message_retention_duration

def topic_message_retention_duration() -> ::Google::Protobuf::Duration
Returns
  • (::Google::Protobuf::Duration) — Output only. Indicates the minimum duration for which a message is retained after it is published to the subscription's topic. If this field is set, messages published to the subscription's topic in the last topic_message_retention_duration are always available to subscribers. See the message_retention_duration field in Topic. This field is set only in responses from the server; it is ignored if it is set in any requests.