Class: Google::Cloud::Pubsub::V1::SubscriberClient

Inherits:
Object
  • Object
show all
Defined in:
lib/google/cloud/pubsub/v1/subscriber_client.rb

Overview

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.

Constant Summary collapse

SERVICE_ADDRESS =

The default address of the service.

"pubsub.googleapis.com".freeze
DEFAULT_SERVICE_PORT =

The default port of the service.

443
GRPC_INTERCEPTORS =

The default set of gRPC interceptors.

[]
DEFAULT_TIMEOUT = 
30
ALL_SCOPES =

The scopes needed to make gRPC calls to all of the methods defined in this service.

[
  "https://www.googleapis.com/auth/cloud-platform",
  "https://www.googleapis.com/auth/pubsub"
].freeze

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(credentials: nil, scopes: ALL_SCOPES, client_config: {}, timeout: DEFAULT_TIMEOUT, metadata: nil, exception_transformer: nil, lib_name: nil, lib_version: "") ⇒ SubscriberClient

Returns a new instance of SubscriberClient

Parameters:

  • credentials (Google::Auth::Credentials, String, Hash, GRPC::Core::Channel, GRPC::Core::ChannelCredentials, Proc) —

    Provides the means for authenticating requests made by the client. This parameter can be many types. A Google::Auth::Credentials uses a the properties of its represented keyfile for authenticating requests made by this client. A String will be treated as the path to the keyfile to be used for the construction of credentials for this client. A Hash will be treated as the contents of a keyfile to be used for the construction of credentials for this client. A GRPC::Core::Channel will be used to make calls through. A GRPC::Core::ChannelCredentials for the setting up the RPC client. The channel credentials should already be composed with a GRPC::Core::CallCredentials object. A Proc will be used as an updater_proc for the Grpc channel. The proc transforms the metadata for requests, generally, to give OAuth credentials.

  • scopes (Array<String>) —

    The OAuth scopes for this service. This parameter is ignored if an updater_proc is supplied.

  • client_config (Hash) —

    A Hash for call options for each method. See Google::Gax#construct_settings for the structure of this data. Falls back to the default config if not specified or the specified config is missing data points.

  • timeout (Numeric) —

    The default timeout, in seconds, for calls made through this client.

  • metadata (Hash) —

    Default metadata to be sent with each request. This can be overridden on a per call basis.

  • exception_transformer (Proc) —

    An optional proc that intercepts any exceptions raised during an API call to inject custom error handling.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 175

def initialize \
    credentials: nil,
    scopes: ALL_SCOPES,
    client_config: {},
    timeout: DEFAULT_TIMEOUT,
    metadata: nil,
    exception_transformer: nil,
    lib_name: nil,
    lib_version: ""
  # These require statements are intentionally placed here to initialize
  # the gRPC module only when it's required.
  # See https://github.com/googleapis/toolkit/issues/446
  require "google/gax/grpc"
  require "google/iam/v1/iam_policy_services_pb"
  require "google/pubsub/v1/pubsub_services_pb"

  credentials ||= Google::Cloud::Pubsub::V1::Credentials.default

  if credentials.is_a?(String) || credentials.is_a?(Hash)
    updater_proc = Google::Cloud::Pubsub::V1::Credentials.new(credentials).updater_proc
  end
  if credentials.is_a?(GRPC::Core::Channel)
    channel = credentials
  end
  if credentials.is_a?(GRPC::Core::ChannelCredentials)
    chan_creds = credentials
  end
  if credentials.is_a?(Proc)
    updater_proc = credentials
  end
  if credentials.is_a?(Google::Auth::Credentials)
    updater_proc = credentials.updater_proc
  end

  package_version = Gem.loaded_specs['google-cloud-pubsub'].version.version

  google_api_client = "gl-ruby/#{RUBY_VERSION}"
  google_api_client << " #{lib_name}/#{lib_version}" if lib_name
  google_api_client << " gapic/#{package_version} gax/#{Google::Gax::VERSION}"
  google_api_client << " grpc/#{GRPC::VERSION}"
  google_api_client.freeze

  headers = { :"x-goog-api-client" => google_api_client }
  headers.merge!(metadata) unless metadata.nil?
  client_config_file = Pathname.new(__dir__).join(
    "subscriber_client_config.json"
  )
  defaults = client_config_file.open do |f|
    Google::Gax.construct_settings(
      "google.pubsub.v1.Subscriber",
      JSON.parse(f.read),
      client_config,
      Google::Gax::Grpc::STATUS_CODE_NAMES,
      timeout,
      page_descriptors: PAGE_DESCRIPTORS,
      errors: Google::Gax::Grpc::API_ERRORS,
      metadata: headers
    )
  end

  # Allow overriding the service path/port in subclasses.
  service_path = self.class::SERVICE_ADDRESS
  port = self.class::DEFAULT_SERVICE_PORT
  interceptors = self.class::GRPC_INTERCEPTORS
  @iam_policy_stub = Google::Gax::Grpc.create_stub(
    service_path,
    port,
    chan_creds: chan_creds,
    channel: channel,
    updater_proc: updater_proc,
    scopes: scopes,
    interceptors: interceptors,
    &Google::Iam::V1::IAMPolicy::Stub.method(:new)
  )
  @subscriber_stub = Google::Gax::Grpc.create_stub(
    service_path,
    port,
    chan_creds: chan_creds,
    channel: channel,
    updater_proc: updater_proc,
    scopes: scopes,
    interceptors: interceptors,
    &Google::Pubsub::V1::Subscriber::Stub.method(:new)
  )

  @create_subscription = Google::Gax.create_api_call(
    @subscriber_stub.method(:create_subscription),
    defaults["create_subscription"],
    exception_transformer: exception_transformer
  )
  @get_subscription = Google::Gax.create_api_call(
    @subscriber_stub.method(:get_subscription),
    defaults["get_subscription"],
    exception_transformer: exception_transformer
  )
  @update_subscription = Google::Gax.create_api_call(
    @subscriber_stub.method(:update_subscription),
    defaults["update_subscription"],
    exception_transformer: exception_transformer
  )
  @list_subscriptions = Google::Gax.create_api_call(
    @subscriber_stub.method(:list_subscriptions),
    defaults["list_subscriptions"],
    exception_transformer: exception_transformer
  )
  @delete_subscription = Google::Gax.create_api_call(
    @subscriber_stub.method(:delete_subscription),
    defaults["delete_subscription"],
    exception_transformer: exception_transformer
  )
  @modify_ack_deadline = Google::Gax.create_api_call(
    @subscriber_stub.method(:modify_ack_deadline),
    defaults["modify_ack_deadline"],
    exception_transformer: exception_transformer
  )
  @acknowledge = Google::Gax.create_api_call(
    @subscriber_stub.method(:acknowledge),
    defaults["acknowledge"],
    exception_transformer: exception_transformer
  )
  @pull = Google::Gax.create_api_call(
    @subscriber_stub.method(:pull),
    defaults["pull"],
    exception_transformer: exception_transformer
  )
  @streaming_pull = Google::Gax.create_api_call(
    @subscriber_stub.method(:streaming_pull),
    defaults["streaming_pull"],
    exception_transformer: exception_transformer
  )
  @modify_push_config = Google::Gax.create_api_call(
    @subscriber_stub.method(:modify_push_config),
    defaults["modify_push_config"],
    exception_transformer: exception_transformer
  )
  @list_snapshots = Google::Gax.create_api_call(
    @subscriber_stub.method(:list_snapshots),
    defaults["list_snapshots"],
    exception_transformer: exception_transformer
  )
  @create_snapshot = Google::Gax.create_api_call(
    @subscriber_stub.method(:create_snapshot),
    defaults["create_snapshot"],
    exception_transformer: exception_transformer
  )
  @update_snapshot = Google::Gax.create_api_call(
    @subscriber_stub.method(:update_snapshot),
    defaults["update_snapshot"],
    exception_transformer: exception_transformer
  )
  @delete_snapshot = Google::Gax.create_api_call(
    @subscriber_stub.method(:delete_snapshot),
    defaults["delete_snapshot"],
    exception_transformer: exception_transformer
  )
  @seek = Google::Gax.create_api_call(
    @subscriber_stub.method(:seek),
    defaults["seek"],
    exception_transformer: exception_transformer
  )
  @set_iam_policy = Google::Gax.create_api_call(
    @iam_policy_stub.method(:set_iam_policy),
    defaults["set_iam_policy"],
    exception_transformer: exception_transformer
  )
  @get_iam_policy = Google::Gax.create_api_call(
    @iam_policy_stub.method(:get_iam_policy),
    defaults["get_iam_policy"],
    exception_transformer: exception_transformer
  )
  @test_iam_permissions = Google::Gax.create_api_call(
    @iam_policy_stub.method(:test_iam_permissions),
    defaults["test_iam_permissions"],
    exception_transformer: exception_transformer
  )
end

Class Method Details

.project_path(project) ⇒ String

Returns a fully-qualified project resource name string.

Parameters:

  • project (String)

Returns:

  • (String) 


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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 129

def self.project_path project
  PROJECT_PATH_TEMPLATE.render(
    :"project" => project
  )
end

.snapshot_path(project, snapshot) ⇒ String

Returns a fully-qualified snapshot resource name string.

Parameters:

  • project (String)
  • snapshot (String)

Returns:

  • (String) 


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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 139

def self.snapshot_path project, snapshot
  SNAPSHOT_PATH_TEMPLATE.render(
    :"project" => project,
    :"snapshot" => snapshot
  )
end

.subscription_path(project, subscription) ⇒ String

Returns a fully-qualified subscription resource name string.

Parameters:

  • project (String)
  • subscription (String)

Returns:

  • (String) 


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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 108

def self.subscription_path project, subscription
  SUBSCRIPTION_PATH_TEMPLATE.render(
    :"project" => project,
    :"subscription" => subscription
  )
end

.topic_path(project, topic) ⇒ String

Returns a fully-qualified topic resource name string.

Parameters:

  • project (String)
  • topic (String)

Returns:

  • (String) 


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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 119

def self.topic_path project, topic
  TOPIC_PATH_TEMPLATE.render(
    :"project" => project,
    :"topic" => topic
  )
end

Instance Method Details

#acknowledge(subscription, ack_ids, options: nil) {|result, operation| ... } ⇒ Object

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.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")

# TODO: Initialize +ack_ids+:
ack_ids = []
subscriber_client.acknowledge(formatted_subscription, ack_ids)

Parameters:

  • subscription (String) —

    The subscription whose message is being acknowledged. Format is +projects/{project}/subscriptions/{sub}+.

  • ack_ids (Array<String>) —

    The acknowledgment ID for the messages being acknowledged that was returned by the Pub/Sub system in the +Pull+ response. Must not be empty.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

  • result —

    []

  • operation (GRPC::ActiveCall::Operation)

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 717

def acknowledge \
    subscription,
    ack_ids,
    options: nil,
    &block
  req = {
    subscription: subscription,
    ack_ids: ack_ids
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::AcknowledgeRequest)
  @acknowledge.call(req, options, &block)
  nil
end

#create_snapshot(name, subscription, labels: nil, options: nil) {|result, operation| ... } ⇒ Google::Pubsub::V1::Snapshot

Creates a snapshot from the requested subscription.

ALPHA: This feature is part of an alpha release. This API might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy. 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.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_name = Google::Cloud::Pubsub::V1::SubscriberClient.snapshot_path("[PROJECT]", "[SNAPSHOT]")
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")
response = subscriber_client.create_snapshot(formatted_name, formatted_subscription)

Parameters:

  • name (String) —

    Optional 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. Format is +projects/{project}/snapshots/{snap}+.

  • subscription (String) —

    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}) —

    User labels.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 984

def create_snapshot \
    name,
    subscription,
    labels: nil,
    options: nil,
    &block
  req = {
    name: name,
    subscription: subscription,
    labels: labels
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::CreateSnapshotRequest)
  @create_snapshot.call(req, options, &block)
end

#create_subscription(name, topic, push_config: nil, ack_deadline_seconds: nil, retain_acked_messages: nil, message_retention_duration: nil, labels: nil, options: nil) {|result, operation| ... } ⇒ Google::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.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_name = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")
formatted_topic = Google::Cloud::Pubsub::V1::SubscriberClient.topic_path("[PROJECT]", "[TOPIC]")
response = subscriber_client.create_subscription(formatted_name, formatted_topic)

Parameters:

  • name (String) —

    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) —

    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::Pubsub::V1::PushConfig | Hash) —

    If push delivery is used with this subscription, this field is used to configure it. An empty +pushConfig+ signifies that the subscriber will pull and ack messages using API methods. A hash of the same form as Google::Pubsub::V1::PushConfig can also be provided.

  • ack_deadline_seconds (Integer) —

    This value is the maximum time after a subscriber receives a message before the subscriber should acknowledge the message. After message delivery but before the ack deadline expires and before the message is acknowledged, it is an outstanding message and will not be delivered again during that time (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 (true, false) —

    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.

    ALPHA: This feature is part of an alpha release. This API might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy.

  • 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.

    ALPHA: This feature is part of an alpha release. This API might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy. A hash of the same form as Google::Protobuf::Duration can also be provided.

  • labels (Hash{String => String}) —

    User labels.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 443

def create_subscription \
    name,
    topic,
    push_config: nil,
    ack_deadline_seconds: nil,
    retain_acked_messages: nil,
    message_retention_duration: nil,
    labels: nil,
    options: nil,
    &block
  req = {
    name: name,
    topic: topic,
    push_config: push_config,
    ack_deadline_seconds: ack_deadline_seconds,
    retain_acked_messages: retain_acked_messages,
    message_retention_duration: message_retention_duration,
    labels: labels
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::Subscription)
  @create_subscription.call(req, options, &block)
end

#delete_snapshot(snapshot, options: nil) {|result, operation| ... } ⇒ Object

Removes an existing snapshot.

ALPHA: This feature is part of an alpha release. This API might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy. 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.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_snapshot = Google::Cloud::Pubsub::V1::SubscriberClient.snapshot_path("[PROJECT]", "[SNAPSHOT]")
subscriber_client.delete_snapshot(formatted_snapshot)

Parameters:

  • snapshot (String) —

    The name of the snapshot to delete. Format is +projects/{project}/snapshots/{snap}+.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

  • result —

    []

  • operation (GRPC::ActiveCall::Operation)

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 1073

def delete_snapshot \
    snapshot,
    options: nil,
    &block
  req = {
    snapshot: snapshot
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::DeleteSnapshotRequest)
  @delete_snapshot.call(req, options, &block)
  nil
end

#delete_subscription(subscription, options: nil) {|result, operation| ... } ⇒ Object

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.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")
subscriber_client.delete_subscription(formatted_subscription)

Parameters:

  • subscription (String) —

    The subscription to delete. Format is +projects/{project}/subscriptions/{sub}+.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

  • result —

    []

  • operation (GRPC::ActiveCall::Operation)

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 619

def delete_subscription \
    subscription,
    options: nil,
    &block
  req = {
    subscription: subscription
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::DeleteSubscriptionRequest)
  @delete_subscription.call(req, options, &block)
  nil
end

#get_iam_policy(resource, options: nil) {|result, operation| ... } ⇒ Google::Iam::V1::Policy

Gets the access control policy for a resource. Returns an empty policy if the resource exists and does not have a policy set.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_resource = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")
response = subscriber_client.get_iam_policy(formatted_resource)

Parameters:

  • resource (String) —

    REQUIRED: The resource for which the policy is being requested. +resource+ is usually specified as a path. For example, a Project resource is specified as +projects/{project}+.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 1209

def get_iam_policy \
    resource,
    options: nil,
    &block
  req = {
    resource: resource
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Iam::V1::GetIamPolicyRequest)
  @get_iam_policy.call(req, options, &block)
end

#get_subscription(subscription, options: nil) {|result, operation| ... } ⇒ Google::Pubsub::V1::Subscription

Gets the configuration details of a subscription.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")
response = subscriber_client.get_subscription(formatted_subscription)

Parameters:

  • subscription (String) —

    The name of the subscription to get. Format is +projects/{project}/subscriptions/{sub}+.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 486

def get_subscription \
    subscription,
    options: nil,
    &block
  req = {
    subscription: subscription
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::GetSubscriptionRequest)
  @get_subscription.call(req, options, &block)
end

#list_snapshots(project, page_size: nil, options: nil) {|result, operation| ... } ⇒ Google::Gax::PagedEnumerable<Google::Pubsub::V1::Snapshot>

Lists the existing snapshots.

ALPHA: This feature is part of an alpha release. This API might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_project = Google::Cloud::Pubsub::V1::SubscriberClient.project_path("[PROJECT]")

# Iterate over all results.
subscriber_client.list_snapshots(formatted_project).each do |element|
  # Process element.
end

# Or iterate over results one page at a time.
subscriber_client.list_snapshots(formatted_project).each_page do |page|
  # Process each page at a time.
  page.each do |element|
    # Process element.
  end
end

Parameters:

  • project (String) —

    The name of the cloud project that snapshots belong to. Format is +projects/{project}+.

  • page_size (Integer) —

    The maximum number of resources contained in the underlying API response. If page streaming is performed per-resource, this parameter does not affect the return value. If page streaming is performed per-page, this determines the maximum number of resources in a page.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

  • (Google::Gax::PagedEnumerable<Google::Pubsub::V1::Snapshot>) —

    An enumerable of Google::Pubsub::V1::Snapshot instances. See Google::Gax::PagedEnumerable documentation for other operations such as per-page iteration or access to the response object.

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 921

def list_snapshots \
    project,
    page_size: nil,
    options: nil,
    &block
  req = {
    project: project,
    page_size: page_size
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::ListSnapshotsRequest)
  @list_snapshots.call(req, options, &block)
end

#list_subscriptions(project, page_size: nil, options: nil) {|result, operation| ... } ⇒ Google::Gax::PagedEnumerable<Google::Pubsub::V1::Subscription>

Lists matching subscriptions.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_project = Google::Cloud::Pubsub::V1::SubscriberClient.project_path("[PROJECT]")

# Iterate over all results.
subscriber_client.list_subscriptions(formatted_project).each do |element|
  # Process element.
end

# Or iterate over results one page at a time.
subscriber_client.list_subscriptions(formatted_project).each_page do |page|
  # Process each page at a time.
  page.each do |element|
    # Process element.
  end
end

Parameters:

  • project (String) —

    The name of the cloud project that subscriptions belong to. Format is +projects/{project}+.

  • page_size (Integer) —

    The maximum number of resources contained in the underlying API response. If page streaming is performed per-resource, this parameter does not affect the return value. If page streaming is performed per-page, this determines the maximum number of resources in a page.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

  • (Google::Gax::PagedEnumerable<Google::Pubsub::V1::Subscription>) —

    An enumerable of Google::Pubsub::V1::Subscription instances. See Google::Gax::PagedEnumerable documentation for other operations such as per-page iteration or access to the response object.

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 583

def list_subscriptions \
    project,
    page_size: nil,
    options: nil,
    &block
  req = {
    project: project,
    page_size: page_size
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::ListSubscriptionsRequest)
  @list_subscriptions.call(req, options, &block)
end

#modify_ack_deadline(subscription, ack_ids, ack_deadline_seconds, options: nil) {|result, operation| ... } ⇒ Object

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.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")

# TODO: Initialize +ack_ids+:
ack_ids = []

# TODO: Initialize +ack_deadline_seconds+:
ack_deadline_seconds = 0
subscriber_client.modify_ack_deadline(formatted_subscription, ack_ids, ack_deadline_seconds)

Parameters:

  • subscription (String) —

    The name of the subscription. Format is +projects/{project}/subscriptions/{sub}+.

  • ack_ids (Array<String>) —

    List of acknowledgment IDs.

  • ack_deadline_seconds (Integer) —

    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 may immediately make the message available for another pull request. The minimum deadline you can specify is 0 seconds. The maximum deadline you can specify is 600 seconds (10 minutes).

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

  • result —

    []

  • operation (GRPC::ActiveCall::Operation)

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 670

def modify_ack_deadline \
    subscription,
    ack_ids,
    ack_deadline_seconds,
    options: nil,
    &block
  req = {
    subscription: subscription,
    ack_ids: ack_ids,
    ack_deadline_seconds: ack_deadline_seconds
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::ModifyAckDeadlineRequest)
  @modify_ack_deadline.call(req, options, &block)
  nil
end

#modify_push_config(subscription, push_config, options: nil) {|result, operation| ... } ⇒ Object

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+.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")

# TODO: Initialize +push_config+:
push_config = {}
subscriber_client.modify_push_config(formatted_subscription, push_config)

Parameters:

  • subscription (String) —

    The name of the subscription. Format is +projects/{project}/subscriptions/{sub}+.

  • push_config (Google::Pubsub::V1::PushConfig | Hash) —

    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. A hash of the same form as Google::Pubsub::V1::PushConfig can also be provided.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

  • result —

    []

  • operation (GRPC::ActiveCall::Operation)

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 862

def modify_push_config \
    subscription,
    push_config,
    options: nil,
    &block
  req = {
    subscription: subscription,
    push_config: push_config
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::ModifyPushConfigRequest)
  @modify_push_config.call(req, options, &block)
  nil
end

#pull(subscription, max_messages, return_immediately: nil, options: nil) {|result, operation| ... } ⇒ Google::Pubsub::V1::PullResponse

Pulls messages from the server. Returns an empty list if there are no messages available in the backlog. The server may return +UNAVAILABLE+ if there are too many concurrent pull requests pending for the given subscription.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")

# TODO: Initialize +max_messages+:
max_messages = 0
response = subscriber_client.pull(formatted_subscription, max_messages)

Parameters:

  • subscription (String) —

    The subscription from which messages should be pulled. Format is +projects/{project}/subscriptions/{sub}+.

  • max_messages (Integer) —

    The maximum number of messages returned for this request. The Pub/Sub system may return fewer than the number specified.

  • return_immediately (true, false) —

    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. The client may cancel the request if it does not wish to wait any longer for the response.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 767

def pull \
    subscription,
    max_messages,
    return_immediately: nil,
    options: nil,
    &block
  req = {
    subscription: subscription,
    max_messages: max_messages,
    return_immediately: return_immediately
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::PullRequest)
  @pull.call(req, options, &block)
end

#seek(subscription, time: nil, snapshot: nil, options: nil) {|result, operation| ... } ⇒ Google::Pubsub::V1::SeekResponse

Seeks an existing subscription to a point in time or to a given snapshot, whichever is provided in the request.

ALPHA: This feature is part of an alpha release. This API might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")
response = subscriber_client.seek(formatted_subscription)

Parameters:

  • subscription (String) —

    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. A hash of the same form as Google::Protobuf::Timestamp can also be provided.

  • 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}+.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 1126

def seek \
    subscription,
    time: nil,
    snapshot: nil,
    options: nil,
    &block
  req = {
    subscription: subscription,
    time: time,
    snapshot: snapshot
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::SeekRequest)
  @seek.call(req, options, &block)
end

#set_iam_policy(resource, policy, options: nil) {|result, operation| ... } ⇒ Google::Iam::V1::Policy

Sets the access control policy on the specified resource. Replaces any existing policy.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_resource = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")

# TODO: Initialize +policy+:
policy = {}
response = subscriber_client.set_iam_policy(formatted_resource, policy)

Parameters:

  • resource (String) —

    REQUIRED: The resource for which the policy is being specified. +resource+ is usually specified as a path. For example, a Project resource is specified as +projects/{project}+.

  • policy (Google::Iam::V1::Policy | Hash) —

    REQUIRED: The complete policy to be applied to the +resource+. The size of the policy is limited to a few 10s of KB. An empty policy is a valid policy but certain Cloud Platform services (such as Projects) might reject them. A hash of the same form as Google::Iam::V1::Policy can also be provided.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 1173

def set_iam_policy \
    resource,
    policy,
    options: nil,
    &block
  req = {
    resource: resource,
    policy: policy
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Iam::V1::SetIamPolicyRequest)
  @set_iam_policy.call(req, options, &block)
end

#streaming_pull(reqs, options: nil) ⇒ Enumerable<Google::Pubsub::V1::StreamingPullResponse>

Note:

EXPERIMENTAL: Streaming requests are still undergoing review. This method interface might change in the future.

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.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_subscription = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")

# TODO: Initialize +stream_ack_deadline_seconds+:
stream_ack_deadline_seconds = 0
request = { subscription: formatted_subscription, stream_ack_deadline_seconds: stream_ack_deadline_seconds }
requests = [request]
subscriber_client.streaming_pull(requests).each do |element|
  # Process element.
end

Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 819

def streaming_pull reqs, options: nil
  request_protos = reqs.lazy.map do |req|
    Google::Gax::to_proto(req, Google::Pubsub::V1::StreamingPullRequest)
  end
  @streaming_pull.call(request_protos, options)
end

#test_iam_permissions(resource, permissions, options: nil) {|result, operation| ... } ⇒ Google::Iam::V1::TestIamPermissionsResponse

Returns permissions that a caller has on the specified resource. If the resource does not exist, this will return an empty set of permissions, not a NOT_FOUND error.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
formatted_resource = Google::Cloud::Pubsub::V1::SubscriberClient.subscription_path("[PROJECT]", "[SUBSCRIPTION]")

# TODO: Initialize +permissions+:
permissions = []
response = subscriber_client.test_iam_permissions(formatted_resource, permissions)

Parameters:

  • resource (String) —

    REQUIRED: The resource for which the policy detail is being requested. +resource+ is usually specified as a path. For example, a Project resource is specified as +projects/{project}+.

  • permissions (Array<String>) —

    The set of permissions to check for the +resource+. Permissions with wildcards (such as '' or 'storage.') are not allowed. For more information see IAM Overview.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 1251

def test_iam_permissions \
    resource,
    permissions,
    options: nil,
    &block
  req = {
    resource: resource,
    permissions: permissions
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Iam::V1::TestIamPermissionsRequest)
  @test_iam_permissions.call(req, options, &block)
end

#update_snapshot(snapshot, update_mask, options: nil) {|result, operation| ... } ⇒ Google::Pubsub::V1::Snapshot

Updates an existing snapshot.

ALPHA: This feature is part of an alpha release. This API might be changed in backward-incompatible ways and is not recommended for production use. It is not subject to any SLA or deprecation policy. Note that certain properties of a snapshot are not modifiable.

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
seconds = 123456
expire_time = { seconds: seconds }
snapshot = { expire_time: expire_time }
paths_element = "expire_time"
paths = [paths_element]
update_mask = { paths: paths }
response = subscriber_client.update_snapshot(snapshot, update_mask)

Parameters:

  • snapshot (Google::Pubsub::V1::Snapshot | Hash) —

    The updated snapshot object. A hash of the same form as Google::Pubsub::V1::Snapshot can also be provided.

  • update_mask (Google::Protobuf::FieldMask | Hash) —

    Indicates which fields in the provided snapshot to update. Must be specified and non-empty. A hash of the same form as Google::Protobuf::FieldMask can also be provided.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 1034

def update_snapshot \
    snapshot,
    update_mask,
    options: nil,
    &block
  req = {
    snapshot: snapshot,
    update_mask: update_mask
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::UpdateSnapshotRequest)
  @update_snapshot.call(req, options, &block)
end

#update_subscription(subscription, update_mask, options: nil) {|result, operation| ... } ⇒ Google::Pubsub::V1::Subscription

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

Examples:

require "google/cloud/pubsub"

subscriber_client = Google::Cloud::Pubsub::Subscriber.new(version: :v1)
ack_deadline_seconds = 42
subscription = { ack_deadline_seconds: ack_deadline_seconds }
paths_element = "ack_deadline_seconds"
paths = [paths_element]
update_mask = { paths: paths }
response = subscriber_client.update_subscription(subscription, update_mask)

Parameters:

  • subscription (Google::Pubsub::V1::Subscription | Hash) —

    The updated subscription object. A hash of the same form as Google::Pubsub::V1::Subscription can also be provided.

  • update_mask (Google::Protobuf::FieldMask | Hash) —

    Indicates which fields in the provided subscription to update. Must be specified and non-empty. A hash of the same form as Google::Protobuf::FieldMask can also be provided.

  • options (Google::Gax::CallOptions) —

    Overrides the default settings for this call, e.g, timeout, retries, etc.

Yields:

  • (result, operation) —

    Access the result along with the RPC operation

Yield Parameters:

Returns:

Raises:

  • (Google::Gax::GaxError) —

    if the RPC is aborted.



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# File 'lib/google/cloud/pubsub/v1/subscriber_client.rb', line 528

def update_subscription \
    subscription,
    update_mask,
    options: nil,
    &block
  req = {
    subscription: subscription,
    update_mask: update_mask
  }.delete_if { |_, v| v.nil? }
  req = Google::Gax::to_proto(req, Google::Pubsub::V1::UpdateSubscriptionRequest)
  @update_subscription.call(req, options, &block)
end