Cloud Pub/Sub V1 API - Class Google::Cloud::PubSub::V1::Subscriber::Client (v0.19.0)

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

Client for the Subscriber service.

The service that an application uses to manipulate subscriptions and to consume messages from a subscription via the Pull method or by establishing a bi-directional stream using the StreamingPull method.

Inherits

  • Object

Includes

Methods

.configure

def self.configure() { |config| ... } -> Client::Configuration

Configure the Subscriber Client class.

See Configuration for a description of the configuration fields.

Yields
  • (config) — Configure the Client client.
Yield Parameter
Returns
Example 
# Modify the configuration for all Subscriber clients
::Google::Cloud::PubSub::V1::Subscriber::Client.configure do |config|
  config.timeout = 10.0
end

#acknowledge

def acknowledge(request, options = nil) -> ::Google::Protobuf::Empty
def acknowledge(subscription: nil, ack_ids: nil) -> ::Google::Protobuf::Empty

Acknowledges the messages associated with the ack_ids in the AcknowledgeRequest. The Pub/Sub system can remove the relevant messages from the subscription.

Acknowledging a message whose ack deadline has expired may succeed, but such a message may be redelivered later. Acknowledging a message more than once will not result in an error.

Overloads 
def acknowledge(request, options = nil) -> ::Google::Protobuf::Empty
Pass arguments to acknowledge via a request object, either of type AcknowledgeRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::AcknowledgeRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def acknowledge(subscription: nil, ack_ids: nil) -> ::Google::Protobuf::Empty
Pass arguments to acknowledge via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • subscription (::String) — Required. The subscription whose message is being acknowledged. Format is projects/{project}/subscriptions/{sub}.
  • ack_ids (::Array<::String>) — Required. The acknowledgment ID for the messages being acknowledged that was returned by the Pub/Sub system in the Pull response. Must not be empty.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::AcknowledgeRequest.new

# Call the acknowledge method.
result = client.acknowledge request

# The returned object is of type Google::Protobuf::Empty.
p result

#configure

def configure() { |config| ... } -> Client::Configuration

Configure the Subscriber Client instance.

The configuration is set to the derived mode, meaning that values can be changed, but structural changes (adding new fields, etc.) are not allowed. Structural changes should be made on Client.configure.

See Configuration for a description of the configuration fields.

Yields
  • (config) — Configure the Client client.
Yield Parameter
Returns

#create_snapshot

def create_snapshot(request, options = nil) -> ::Google::Cloud::PubSub::V1::Snapshot
def create_snapshot(name: nil, subscription: nil, labels: nil) -> ::Google::Cloud::PubSub::V1::Snapshot

Creates a snapshot from the requested subscription. Snapshots are used in Seek operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot. If the snapshot already exists, returns ALREADY_EXISTS. If the requested subscription doesn't exist, returns NOT_FOUND. If the backlog in the subscription is too old -- and the resulting snapshot would expire in less than 1 hour -- then FAILED_PRECONDITION is returned. See also the Snapshot.expire_time field. If the name is not provided in the request, the server will assign a random name for this snapshot on the same project as the subscription, conforming to the resource name format. The generated name is populated in the returned Snapshot object. Note that for REST API requests, you must specify a name in the request.

Overloads 
def create_snapshot(request, options = nil) -> ::Google::Cloud::PubSub::V1::Snapshot
Pass arguments to create_snapshot via a request object, either of type CreateSnapshotRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::CreateSnapshotRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def create_snapshot(name: nil, subscription: nil, labels: nil) -> ::Google::Cloud::PubSub::V1::Snapshot
Pass arguments to create_snapshot via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • name (::String) — Required. User-provided name for this snapshot. If the name is not provided in the request, the server will assign a random name for this snapshot on the same project as the subscription. Note that for REST API requests, you must specify a name. See the resource name rules. Format is projects/{project}/snapshots/{snap}.
  • subscription (::String) — Required. The subscription whose backlog the snapshot retains. Specifically, the created snapshot is guaranteed to retain: (a) The existing backlog on the subscription. More precisely, this is defined as the messages in the subscription's backlog that are unacknowledged upon the successful completion of the CreateSnapshot request; as well as: (b) Any messages published to the subscription's topic following the successful completion of the CreateSnapshot request. Format is projects/{project}/subscriptions/{sub}.
  • labels (::Hash{::String => ::String}) — See Creating and managing labels.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::CreateSnapshotRequest.new

# Call the create_snapshot method.
result = client.create_snapshot request

# The returned object is of type Google::Cloud::PubSub::V1::Snapshot.
p result

#create_subscription

def create_subscription(request, options = nil) -> ::Google::Cloud::PubSub::V1::Subscription
def create_subscription(name: nil, topic: nil, push_config: nil, bigquery_config: nil, cloud_storage_config: nil, ack_deadline_seconds: nil, retain_acked_messages: nil, message_retention_duration: nil, labels: nil, enable_message_ordering: nil, expiration_policy: nil, filter: nil, dead_letter_policy: nil, retry_policy: nil, detached: nil, enable_exactly_once_delivery: nil) -> ::Google::Cloud::PubSub::V1::Subscription

Creates a subscription to a given topic. See the resource name rules. If the subscription already exists, returns ALREADY_EXISTS. If the corresponding topic doesn't exist, returns NOT_FOUND.

If the name is not provided in the request, the server will assign a random name for this subscription on the same project as the topic, conforming to the resource name format. The generated name is populated in the returned Subscription object. Note that for REST API requests, you must specify a name in the request.

Overloads 
def create_subscription(request, options = nil) -> ::Google::Cloud::PubSub::V1::Subscription
Pass arguments to create_subscription via a request object, either of type Google::Cloud::PubSub::V1::Subscription or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::Subscription, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def create_subscription(name: nil, topic: nil, push_config: nil, bigquery_config: nil, cloud_storage_config: nil, ack_deadline_seconds: nil, retain_acked_messages: nil, message_retention_duration: nil, labels: nil, enable_message_ordering: nil, expiration_policy: nil, filter: nil, dead_letter_policy: nil, retry_policy: nil, detached: nil, enable_exactly_once_delivery: nil) -> ::Google::Cloud::PubSub::V1::Subscription
Pass arguments to create_subscription via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • name (::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".
  • topic (::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.
  • push_config (::Google::Cloud::PubSub::V1::PushConfig, ::Hash) — If push delivery is used with this subscription, this field is used to configure it.
  • bigquery_config (::Google::Cloud::PubSub::V1::BigQueryConfig, ::Hash) — If delivery to BigQuery is used with this subscription, this field is used to configure it.
  • cloud_storage_config (::Google::Cloud::PubSub::V1::CloudStorageConfig, ::Hash) — If delivery to Google Cloud Storage is used with this subscription, this field is used to configure it.
  • ack_deadline_seconds (::Integer) — 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.

  • retain_acked_messages (::Boolean) — 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.
  • message_retention_duration (::Google::Protobuf::Duration, ::Hash) — 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.
  • labels (::Hash{::String => ::String}) — See Creating and managing labels.
  • enable_message_ordering (::Boolean) — 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 (::Google::Cloud::PubSub::V1::ExpirationPolicy, ::Hash) — 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 (::String) — 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.
  • dead_letter_policy (::Google::Cloud::PubSub::V1::DeadLetterPolicy, ::Hash) — 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 Cloud 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.

  • retry_policy (::Google::Cloud::PubSub::V1::RetryPolicy, ::Hash) — 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.

  • detached (::Boolean) — 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 (::Boolean) — 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.

Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::Subscription.new

# Call the create_subscription method.
result = client.create_subscription request

# The returned object is of type Google::Cloud::PubSub::V1::Subscription.
p result

#delete_snapshot

def delete_snapshot(request, options = nil) -> ::Google::Protobuf::Empty
def delete_snapshot(snapshot: nil) -> ::Google::Protobuf::Empty

Removes an existing snapshot. Snapshots are used in Seek operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot. When the snapshot is deleted, all messages retained in the snapshot are immediately dropped. After a snapshot is deleted, a new one may be created with the same name, but the new one has no association with the old snapshot or its subscription, unless the same subscription is specified.

Overloads 
def delete_snapshot(request, options = nil) -> ::Google::Protobuf::Empty
Pass arguments to delete_snapshot via a request object, either of type DeleteSnapshotRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::DeleteSnapshotRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def delete_snapshot(snapshot: nil) -> ::Google::Protobuf::Empty
Pass arguments to delete_snapshot via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameter
  • snapshot (::String) — Required. The name of the snapshot to delete. Format is projects/{project}/snapshots/{snap}.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::DeleteSnapshotRequest.new

# Call the delete_snapshot method.
result = client.delete_snapshot request

# The returned object is of type Google::Protobuf::Empty.
p result

#delete_subscription

def delete_subscription(request, options = nil) -> ::Google::Protobuf::Empty
def delete_subscription(subscription: nil) -> ::Google::Protobuf::Empty

Deletes an existing subscription. All messages retained in the subscription are immediately dropped. Calls to Pull after deletion will return NOT_FOUND. After a subscription is deleted, a new one may be created with the same name, but the new one has no association with the old subscription or its topic unless the same topic is specified.

Overloads 
def delete_subscription(request, options = nil) -> ::Google::Protobuf::Empty
Pass arguments to delete_subscription via a request object, either of type DeleteSubscriptionRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::DeleteSubscriptionRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def delete_subscription(subscription: nil) -> ::Google::Protobuf::Empty
Pass arguments to delete_subscription via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameter
  • subscription (::String) — Required. The subscription to delete. Format is projects/{project}/subscriptions/{sub}.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::DeleteSubscriptionRequest.new

# Call the delete_subscription method.
result = client.delete_subscription request

# The returned object is of type Google::Protobuf::Empty.
p result

#get_snapshot

def get_snapshot(request, options = nil) -> ::Google::Cloud::PubSub::V1::Snapshot
def get_snapshot(snapshot: nil) -> ::Google::Cloud::PubSub::V1::Snapshot

Gets the configuration details of a snapshot. Snapshots are used in Seek operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Overloads 
def get_snapshot(request, options = nil) -> ::Google::Cloud::PubSub::V1::Snapshot
Pass arguments to get_snapshot via a request object, either of type GetSnapshotRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::GetSnapshotRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def get_snapshot(snapshot: nil) -> ::Google::Cloud::PubSub::V1::Snapshot
Pass arguments to get_snapshot via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameter
  • snapshot (::String) — Required. The name of the snapshot to get. Format is projects/{project}/snapshots/{snap}.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::GetSnapshotRequest.new

# Call the get_snapshot method.
result = client.get_snapshot request

# The returned object is of type Google::Cloud::PubSub::V1::Snapshot.
p result

#get_subscription

def get_subscription(request, options = nil) -> ::Google::Cloud::PubSub::V1::Subscription
def get_subscription(subscription: nil) -> ::Google::Cloud::PubSub::V1::Subscription

Gets the configuration details of a subscription.

Overloads 
def get_subscription(request, options = nil) -> ::Google::Cloud::PubSub::V1::Subscription
Pass arguments to get_subscription via a request object, either of type GetSubscriptionRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::GetSubscriptionRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def get_subscription(subscription: nil) -> ::Google::Cloud::PubSub::V1::Subscription
Pass arguments to get_subscription via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameter
  • subscription (::String) — Required. The name of the subscription to get. Format is projects/{project}/subscriptions/{sub}.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::GetSubscriptionRequest.new

# Call the get_subscription method.
result = client.get_subscription request

# The returned object is of type Google::Cloud::PubSub::V1::Subscription.
p result

#iam_policy_client

def iam_policy_client() -> Google::Iam::V1::IAMPolicy::Client

Get the associated client for mix-in of the IAMPolicy.

Returns
  • (Google::Iam::V1::IAMPolicy::Client)

#initialize

def initialize() { |config| ... } -> Client

Create a new Subscriber client object.

Yields
  • (config) — Configure the Subscriber client.
Yield Parameter
Returns
  • (Client) — a new instance of Client
Example 
# Create a client using the default configuration
client = ::Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a client using a custom configuration
client = ::Google::Cloud::PubSub::V1::Subscriber::Client.new do |config|
  config.timeout = 10.0
end

#list_snapshots

def list_snapshots(request, options = nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::PubSub::V1::Snapshot>
def list_snapshots(project: nil, page_size: nil, page_token: nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::PubSub::V1::Snapshot>

Lists the existing snapshots. Snapshots are used in Seek operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Overloads 
def list_snapshots(request, options = nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::PubSub::V1::Snapshot>
Pass arguments to list_snapshots via a request object, either of type ListSnapshotsRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::ListSnapshotsRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def list_snapshots(project: nil, page_size: nil, page_token: nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::PubSub::V1::Snapshot>
Pass arguments to list_snapshots via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • project (::String) — Required. The name of the project in which to list snapshots. Format is projects/{project-id}.
  • page_size (::Integer) — Maximum number of snapshots to return.
  • page_token (::String) — The value returned by the last ListSnapshotsResponse; indicates that this is a continuation of a prior ListSnapshots call, and that the system should return the next page of data.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::ListSnapshotsRequest.new

# Call the list_snapshots method.
result = client.list_snapshots request

# The returned object is of type Gapic::PagedEnumerable. You can iterate
# over elements, and API calls will be issued to fetch pages as needed.
result.each do |item|
  # Each element is of type ::Google::Cloud::PubSub::V1::Snapshot.
  p item
end

#list_subscriptions

def list_subscriptions(request, options = nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::PubSub::V1::Subscription>
def list_subscriptions(project: nil, page_size: nil, page_token: nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::PubSub::V1::Subscription>

Lists matching subscriptions.

Overloads 
def list_subscriptions(request, options = nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::PubSub::V1::Subscription>
Pass arguments to list_subscriptions via a request object, either of type ListSubscriptionsRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::ListSubscriptionsRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def list_subscriptions(project: nil, page_size: nil, page_token: nil) -> ::Gapic::PagedEnumerable<::Google::Cloud::PubSub::V1::Subscription>
Pass arguments to list_subscriptions via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • project (::String) — Required. The name of the project in which to list subscriptions. Format is projects/{project-id}.
  • page_size (::Integer) — Maximum number of subscriptions to return.
  • page_token (::String) — The value returned by the last ListSubscriptionsResponse; indicates that this is a continuation of a prior ListSubscriptions call, and that the system should return the next page of data.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::ListSubscriptionsRequest.new

# Call the list_subscriptions method.
result = client.list_subscriptions request

# The returned object is of type Gapic::PagedEnumerable. You can iterate
# over elements, and API calls will be issued to fetch pages as needed.
result.each do |item|
  # Each element is of type ::Google::Cloud::PubSub::V1::Subscription.
  p item
end

#modify_ack_deadline

def modify_ack_deadline(request, options = nil) -> ::Google::Protobuf::Empty
def modify_ack_deadline(subscription: nil, ack_ids: nil, ack_deadline_seconds: nil) -> ::Google::Protobuf::Empty

Modifies the ack deadline for a specific message. This method is useful to indicate that more time is needed to process a message by the subscriber, or to make the message available for redelivery if the processing was interrupted. Note that this does not modify the subscription-level ackDeadlineSeconds used for subsequent messages.

Overloads 
def modify_ack_deadline(request, options = nil) -> ::Google::Protobuf::Empty
Pass arguments to modify_ack_deadline via a request object, either of type ModifyAckDeadlineRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::ModifyAckDeadlineRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def modify_ack_deadline(subscription: nil, ack_ids: nil, ack_deadline_seconds: nil) -> ::Google::Protobuf::Empty
Pass arguments to modify_ack_deadline via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • subscription (::String) — Required. The name of the subscription. Format is projects/{project}/subscriptions/{sub}.
  • ack_ids (::Array<::String>) — Required. List of acknowledgment IDs.
  • ack_deadline_seconds (::Integer) — Required. The new ack deadline with respect to the time this request was sent to the Pub/Sub system. For example, if the value is 10, the new ack deadline will expire 10 seconds after the ModifyAckDeadline call was made. Specifying zero might immediately make the message available for delivery to another subscriber client. This typically results in an increase in the rate of message redeliveries (that is, duplicates). The minimum deadline you can specify is 0 seconds. The maximum deadline you can specify is 600 seconds (10 minutes).
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::ModifyAckDeadlineRequest.new

# Call the modify_ack_deadline method.
result = client.modify_ack_deadline request

# The returned object is of type Google::Protobuf::Empty.
p result

#modify_push_config

def modify_push_config(request, options = nil) -> ::Google::Protobuf::Empty
def modify_push_config(subscription: nil, push_config: nil) -> ::Google::Protobuf::Empty

Modifies the PushConfig for a specified subscription.

This may be used to change a push subscription to a pull one (signified by an empty PushConfig) or vice versa, or change the endpoint URL and other attributes of a push subscription. Messages will accumulate for delivery continuously through the call regardless of changes to the PushConfig.

Overloads 
def modify_push_config(request, options = nil) -> ::Google::Protobuf::Empty
Pass arguments to modify_push_config via a request object, either of type ModifyPushConfigRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::ModifyPushConfigRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def modify_push_config(subscription: nil, push_config: nil) -> ::Google::Protobuf::Empty
Pass arguments to modify_push_config via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • subscription (::String) — Required. The name of the subscription. Format is projects/{project}/subscriptions/{sub}.
  • push_config (::Google::Cloud::PubSub::V1::PushConfig, ::Hash) — Required. The push configuration for future deliveries.

    An empty pushConfig indicates that the Pub/Sub system should stop pushing messages from the given subscription and allow messages to be pulled and acknowledged - effectively pausing the subscription if Pull or StreamingPull is not called.

Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::ModifyPushConfigRequest.new

# Call the modify_push_config method.
result = client.modify_push_config request

# The returned object is of type Google::Protobuf::Empty.
p result

#pull

def pull(request, options = nil) -> ::Google::Cloud::PubSub::V1::PullResponse
def pull(subscription: nil, return_immediately: nil, max_messages: nil) -> ::Google::Cloud::PubSub::V1::PullResponse

Pulls messages from the server.

Overloads 
def pull(request, options = nil) -> ::Google::Cloud::PubSub::V1::PullResponse
Pass arguments to pull via a request object, either of type PullRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::PullRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def pull(subscription: nil, return_immediately: nil, max_messages: nil) -> ::Google::Cloud::PubSub::V1::PullResponse
Pass arguments to pull via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • subscription (::String) — Required. The subscription from which messages should be pulled. Format is projects/{project}/subscriptions/{sub}.
  • return_immediately (::Boolean) — Optional. If this field set to true, the system will respond immediately even if it there are no messages available to return in the Pull response. Otherwise, the system may wait (for a bounded amount of time) until at least one message is available, rather than returning no messages. Warning: setting this field to true is discouraged because it adversely impacts the performance of Pull operations. We recommend that users do not set this field.
  • max_messages (::Integer) — Required. The maximum number of messages to return for this request. Must be a positive integer. The Pub/Sub system may return fewer than the number specified.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::PullRequest.new

# Call the pull method.
result = client.pull request

# The returned object is of type Google::Cloud::PubSub::V1::PullResponse.
p result

#seek

def seek(request, options = nil) -> ::Google::Cloud::PubSub::V1::SeekResponse
def seek(subscription: nil, time: nil, snapshot: nil) -> ::Google::Cloud::PubSub::V1::SeekResponse

Seeks an existing subscription to a point in time or to a given snapshot, whichever is provided in the request. Snapshots are used in Seek operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot. Note that both the subscription and the snapshot must be on the same topic.

Overloads 
def seek(request, options = nil) -> ::Google::Cloud::PubSub::V1::SeekResponse
Pass arguments to seek via a request object, either of type Google::Cloud::PubSub::V1::SeekRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::SeekRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def seek(subscription: nil, time: nil, snapshot: nil) -> ::Google::Cloud::PubSub::V1::SeekResponse
Pass arguments to seek via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
  • subscription (::String) — Required. The subscription to affect.
  • time (::Google::Protobuf::Timestamp, ::Hash) — The time to seek to. Messages retained in the subscription that were published before this time are marked as acknowledged, and messages retained in the subscription that were published after this time are marked as unacknowledged. Note that this operation affects only those messages retained in the subscription (configured by the combination of message_retention_duration and retain_acked_messages). For example, if time corresponds to a point before the message retention window (or to a point before the system's notion of the subscription creation time), only retained messages will be marked as unacknowledged, and already-expunged messages will not be restored.
  • snapshot (::String) — The snapshot to seek to. The snapshot's topic must be the same as that of the provided subscription. Format is projects/{project}/snapshots/{snap}.
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::SeekRequest.new

# Call the seek method.
result = client.seek request

# The returned object is of type Google::Cloud::PubSub::V1::SeekResponse.
p result

#streaming_pull

def streaming_pull(request, options = nil) { |response, operation| ... } -> ::Enumerable<::Google::Cloud::PubSub::V1::StreamingPullResponse>

Establishes a stream with the server, which sends messages down to the client. The client streams acknowledgements and ack deadline modifications back to the server. The server will close the stream and return the status on any error. The server may close the stream with status UNAVAILABLE to reassign server-side resources, in which case, the client should re-establish the stream. Flow control can be achieved by configuring the underlying RPC channel.

Parameters
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create an input stream.
input = Gapic::StreamInput.new

# Call the streaming_pull method to start streaming.
output = client.streaming_pull input

# Send requests on the stream. For each request object, set fields by
# passing keyword arguments. Be sure to close the stream when done.
input << Google::Cloud::PubSub::V1::StreamingPullRequest.new
input << Google::Cloud::PubSub::V1::StreamingPullRequest.new
input.close

# The returned object is a streamed enumerable yielding elements of type
# ::Google::Cloud::PubSub::V1::StreamingPullResponse
output.each do |current_response|
  p current_response
end

#update_snapshot

def update_snapshot(request, options = nil) -> ::Google::Cloud::PubSub::V1::Snapshot
def update_snapshot(snapshot: nil, update_mask: nil) -> ::Google::Cloud::PubSub::V1::Snapshot

Updates an existing snapshot. Snapshots are used in Seek operations, which allow you to manage message acknowledgments in bulk. That is, you can set the acknowledgment state of messages in an existing subscription to the state captured by a snapshot.

Overloads 
def update_snapshot(request, options = nil) -> ::Google::Cloud::PubSub::V1::Snapshot
Pass arguments to update_snapshot via a request object, either of type UpdateSnapshotRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::UpdateSnapshotRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def update_snapshot(snapshot: nil, update_mask: nil) -> ::Google::Cloud::PubSub::V1::Snapshot
Pass arguments to update_snapshot via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::UpdateSnapshotRequest.new

# Call the update_snapshot method.
result = client.update_snapshot request

# The returned object is of type Google::Cloud::PubSub::V1::Snapshot.
p result

#update_subscription

def update_subscription(request, options = nil) -> ::Google::Cloud::PubSub::V1::Subscription
def update_subscription(subscription: nil, update_mask: nil) -> ::Google::Cloud::PubSub::V1::Subscription

Updates an existing subscription. Note that certain properties of a subscription, such as its topic, are not modifiable.

Overloads 
def update_subscription(request, options = nil) -> ::Google::Cloud::PubSub::V1::Subscription
Pass arguments to update_subscription via a request object, either of type UpdateSubscriptionRequest or an equivalent Hash.
Parameters
  • request (::Google::Cloud::PubSub::V1::UpdateSubscriptionRequest, ::Hash) — A request object representing the call parameters. Required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash.
  • options (::Gapic::CallOptions, ::Hash) — Overrides the default settings for this call, e.g, timeout, retries, etc. Optional. 
def update_subscription(subscription: nil, update_mask: nil) -> ::Google::Cloud::PubSub::V1::Subscription
Pass arguments to update_subscription via keyword arguments. Note that at least one keyword argument is required. To specify no parameters, or to keep all the default parameter values, pass an empty Hash as a request object (see above).
Parameters
Yields
  • (response, operation) — Access the result along with the RPC operation
Yield Parameters
Returns
Raises
  • (::Google::Cloud::Error) — if the RPC is aborted.
Example

Basic example

require "google/cloud/pubsub/v1"

# Create a client object. The client can be reused for multiple calls.
client = Google::Cloud::PubSub::V1::Subscriber::Client.new

# Create a request. To set request fields, pass in keyword arguments.
request = Google::Cloud::PubSub::V1::UpdateSubscriptionRequest.new

# Call the update_subscription method.
result = client.update_subscription request

# The returned object is of type Google::Cloud::PubSub::V1::Subscription.
p result