Class: Aws::Kinesis::AsyncClient

Inherits:
Seahorse::Client::AsyncBase
  • Object
show all
Includes:
AsyncClientStubs
Defined in:
lib/aws-sdk-kinesis/async_client.rb

Class Attribute Summary collapse

API Operations collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ AsyncClient

@option options [required, Aws::CredentialProvider] :credentials

  Your AWS credentials. This can be an instance of any one of the
  following classes:

  * `Aws::Credentials` - Used for configuring static, non-refreshing
    credentials.

  * `Aws::SharedCredentials` - Used for loading static credentials from a
    shared file, such as `~/.aws/config`.

  * `Aws::AssumeRoleCredentials` - Used when you need to assume a role.

  * `Aws::AssumeRoleWebIdentityCredentials` - Used when you need to
    assume a role after providing credentials via the web.

  * `Aws::SSOCredentials` - Used for loading credentials from AWS SSO using an
    access token generated from `aws login`.

  * `Aws::ProcessCredentials` - Used for loading credentials from a
    process that outputs to stdout.

  * `Aws::InstanceProfileCredentials` - Used for loading credentials
    from an EC2 IMDS on an EC2 instance.

  * `Aws::ECSCredentials` - Used for loading credentials from
    instances running in ECS.

  * `Aws::CognitoIdentityCredentials` - Used for loading credentials
    from the Cognito Identity service.

  When `:credentials` are not configured directly, the following
  locations will be searched for credentials:

  * `Aws.config[:credentials]`
  * The `:access_key_id`, `:secret_access_key`, `:session_token`, and
    `:account_id` options.
  * ENV['AWS_ACCESS_KEY_ID'], ENV['AWS_SECRET_ACCESS_KEY'],
    ENV['AWS_SESSION_TOKEN'], and ENV['AWS_ACCOUNT_ID']
  * `~/.aws/credentials`
  * `~/.aws/config`
  * EC2/ECS IMDS instance profile - When used by default, the timeouts
    are very aggressive. Construct and pass an instance of
    `Aws::InstanceProfileCredentials` or `Aws::ECSCredentials` to
    enable retries and extended timeouts. Instance profile credential
    fetching can be disabled by setting ENV['AWS_EC2_METADATA_DISABLED']
    to true.

@option options [required, String] :region
  The AWS region to connect to.  The configured `:region` is
  used to determine the service `:endpoint`. When not passed,
  a default `:region` is searched for in the following locations:

  * `Aws.config[:region]`
  * `ENV['AWS_REGION']`
  * `ENV['AMAZON_REGION']`
  * `ENV['AWS_DEFAULT_REGION']`
  * `~/.aws/credentials`
  * `~/.aws/config`

@option options [String] :access_key_id

@option options [String] :account_id

@option options [Boolean] :adaptive_retry_wait_to_fill (true)
  Used only in `adaptive` retry mode.  When true, the request will sleep
  until there is sufficent client side capacity to retry the request.
  When false, the request will raise a `RetryCapacityNotAvailableError` and will
  not retry instead of sleeping.

@option options [Boolean] :convert_params (true)
  When `true`, an attempt is made to coerce request parameters into
  the required types.

@option options [Boolean] :correct_clock_skew (true)
  Used only in `standard` and adaptive retry modes. Specifies whether to apply
  a clock skew correction and retry requests with skewed client clocks.

@option options [String] :defaults_mode ("legacy")
  See {Aws::DefaultsModeConfiguration} for a list of the
  accepted modes and the configuration defaults that are included.

@option options [Boolean] :disable_request_compression (false)
  When set to 'true' the request body will not be compressed
  for supported operations.

@option options [String, URI::HTTPS, URI::HTTP] :endpoint
  Normally you should not configure the `:endpoint` option
  directly. This is normally constructed from the `:region`
  option. Configuring `:endpoint` is normally reserved for
  connecting to test or custom endpoints. The endpoint should
  be a URI formatted like:

      'http://example.com'
      'https://example.com'
      'http://example.com:123'

@option options [Proc] :event_stream_handler
  When an EventStream or Proc object is provided, it will be used as callback for each chunk of event stream response received along the way.

@option options [Boolean] :ignore_configured_endpoint_urls
  Setting to true disables use of endpoint URLs provided via environment
  variables and the shared configuration file.

@option options [Proc] :input_event_stream_handler
  When an EventStream or Proc object is provided, it can be used for sending events for the event stream.

@option options [Aws::Log::Formatter] :log_formatter (Aws::Log::Formatter.default)
  The log formatter.

@option options [Symbol] :log_level (:info)
  The log level to send messages to the `:logger` at.

@option options [Logger] :logger
  The Logger instance to send log messages to.  If this option
  is not set, logging will be disabled.

@option options [Integer] :max_attempts (3)
  An integer representing the maximum number attempts that will be made for
  a single request, including the initial attempt.  For example,
  setting this value to 5 will result in a request being retried up to
  4 times. Used in `standard` and `adaptive` retry modes.

@option options [Proc] :output_event_stream_handler
  When an EventStream or Proc object is provided, it will be used as callback for each chunk of event stream response received along the way.

@option options [String] :profile ("default")
  Used when loading credentials from the shared credentials file
  at HOME/.aws/credentials.  When not specified, 'default' is used.

@option options [Integer] :request_min_compression_size_bytes (10240)
  The minimum size in bytes that triggers compression for request
  bodies. The value must be non-negative integer value between 0
  and 10485780 bytes inclusive.

@option options [Proc] :retry_backoff
  A proc or lambda used for backoff. Defaults to 2**retries * retry_base_delay.
  This option is only used in the `legacy` retry mode.

@option options [Float] :retry_base_delay (0.3)
  The base delay in seconds used by the default backoff function. This option
  is only used in the `legacy` retry mode.

@option options [Symbol] :retry_jitter (:none)
  A delay randomiser function used by the default backoff function.
  Some predefined functions can be referenced by name - :none, :equal, :full,
  otherwise a Proc that takes and returns a number. This option is only used
  in the `legacy` retry mode.

  @see https://www.awsarchitectureblog.com/2015/03/backoff.html

@option options [Integer] :retry_limit (3)
  The maximum number of times to retry failed requests.  Only
  ~ 500 level server errors and certain ~ 400 level client errors
  are retried.  Generally, these are throttling errors, data
  checksum errors, networking errors, timeout errors, auth errors,
  endpoint discovery, and errors from expired credentials.
  This option is only used in the `legacy` retry mode.

@option options [Integer] :retry_max_delay (0)
  The maximum number of seconds to delay between retries (0 for no limit)
  used by the default backoff function. This option is only used in the
  `legacy` retry mode.

@option options [String] :retry_mode ("legacy")
  Specifies which retry algorithm to use. Values are:

  * `legacy` - The pre-existing retry behavior.  This is default value if
    no retry mode is provided.

  * `standard` - A standardized set of retry rules across the AWS SDKs.
    This includes support for retry quotas, which limit the number of
    unsuccessful retries a client can make.

  * `adaptive` - An experimental retry mode that includes all the
    functionality of `standard` mode along with automatic client side
    throttling.  This is a provisional mode that may change behavior
    in the future.

@option options [String] :sdk_ua_app_id
  A unique and opaque application ID that is appended to the
  User-Agent header as app/sdk_ua_app_id. It should have a
  maximum length of 50. This variable is sourced from environment
  variable AWS_SDK_UA_APP_ID or the shared config profile attribute sdk_ua_app_id.

@option options [String] :secret_access_key

@option options [String] :session_token

@option options [Array] :sigv4a_signing_region_set
  A list of regions that should be signed with SigV4a signing. When
  not passed, a default `:sigv4a_signing_region_set` is searched for
  in the following locations:

  * `Aws.config[:sigv4a_signing_region_set]`
  * `ENV['AWS_SIGV4A_SIGNING_REGION_SET']`
  * `~/.aws/config`

@option options [Boolean] :simple_json (false)
  Disables request parameter conversion, validation, and formatting.
  Also disables response data type conversions. The request parameters
  hash must be formatted exactly as the API expects.This option is useful
  when you want to ensure the highest level of performance by avoiding
  overhead of walking request parameters and response data structures.

@option options [Boolean] :stub_responses (false)
  Causes the client to return stubbed responses. By default
  fake responses are generated and returned. You can specify
  the response data to return or errors to raise by calling
  {ClientStubs#stub_responses}. See {ClientStubs} for more information.

  ** Please note ** When response stubbing is enabled, no HTTP
  requests are made, and retries are disabled.

@option options [Aws::Telemetry::TelemetryProviderBase] :telemetry_provider (Aws::Telemetry::NoOpTelemetryProvider)
  Allows you to provide a telemetry provider, which is used to
  emit telemetry data. By default, uses `NoOpTelemetryProvider` which
  will not record or emit any telemetry data. The SDK supports the
  following telemetry providers:

  * OpenTelemetry (OTel) - To use the OTel provider, install and require the
  `opentelemetry-sdk` gem and then, pass in an instance of a
  `Aws::Telemetry::OTelProvider` for telemetry provider.

@option options [Aws::TokenProvider] :token_provider
  A Bearer Token Provider. This can be an instance of any one of the
  following classes:

  * `Aws::StaticTokenProvider` - Used for configuring static, non-refreshing
    tokens.

  * `Aws::SSOTokenProvider` - Used for loading tokens from AWS SSO using an
    access token generated from `aws login`.

  When `:token_provider` is not configured directly, the `Aws::TokenProviderChain`
  will be used to search for tokens configured for your profile in shared configuration files.

@option options [Boolean] :use_dualstack_endpoint
  When set to `true`, dualstack enabled endpoints (with `.aws` TLD)
  will be used if available.

@option options [Boolean] :use_fips_endpoint
  When set to `true`, fips compatible endpoints will be used if available.
  When a `fips` region is used, the region is normalized and this config
  is set to `true`.

@option options [Boolean] :validate_params (true)
  When `true`, request parameters are validated before
  sending the request.

@option options [Aws::Kinesis::EndpointProvider] :endpoint_provider
  The endpoint provider used to resolve endpoints. Any object that responds to
  `#resolve_endpoint(parameters)` where `parameters` is a Struct similar to
  `Aws::Kinesis::EndpointParameters`.

@option options [Integer] :connection_read_timeout (60)
  Connection read timeout in seconds, defaults to 60 sec.

@option options [Integer] :connection_timeout (60)
  Connection timeout in seconds, defaults to 60 sec.

@option options [Boolean] :enable_alpn (false)
  Set to `true` to enable ALPN in HTTP2 over TLS. Requires Openssl version >= 1.0.2.
  Defaults to false. Note: not all service HTTP2 operations supports ALPN on server
  side, please refer to service documentation.

@option options [Boolean] :http_wire_trace (false)
  When `true`, HTTP2 debug output will be sent to the `:logger`.

@option options [Integer] :max_concurrent_streams (100)
  Maximum concurrent streams used in HTTP2 connection, defaults to 100. Note that server may send back
  :settings_max_concurrent_streams value which will take priority when initializing new streams.

@option options [Boolean] :raise_response_errors (true)
  Defaults to `true`, raises errors if exist when #wait or #join! is called upon async response.

@option options [Integer] :read_chunk_size (1024)

@option options [String] :ssl_ca_bundle
  Full path to the SSL certificate authority bundle file that should be used when
  verifying peer certificates. If you do not pass `:ssl_ca_directory` or `:ssl_ca_bundle`
  the system default will be used if available.

@option options [String] :ssl_ca_directory
  Full path of the directory that contains the unbundled SSL certificate authority
  files for verifying peer certificates. If you do not pass `:ssl_ca_bundle` or
  `:ssl_ca_directory` the system default will be used if available.

@option options [String] :ssl_ca_store

@option options [Boolean] :ssl_verify_peer (true)
  When `true`, SSL peer certificates are verified when establishing a connection.



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# File 'lib/aws-sdk-kinesis/async_client.rb', line 363

def initialize(*args)
  unless Kernel.const_defined?("HTTP2")
    raise "Must include http/2 gem to use AsyncClient instances."
  end
  super
end

Class Attribute Details

.identifier ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/aws-sdk-kinesis/async_client.rb', line 715

def identifier
  @identifier
end

Class Method Details

.errors_module ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/aws-sdk-kinesis/async_client.rb', line 718

def errors_module
  Errors
end

Instance Method Details

#build_request(operation_name, params = {}) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Parameters:

  • params ({}) (defaults to: {}) 


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# File 'lib/aws-sdk-kinesis/async_client.rb', line 678

def build_request(operation_name, params = {})
  handlers = @handlers.for(operation_name)
  tracer = config.telemetry_provider.tracer_provider.tracer(
    Aws::Telemetry.module_to_tracer_name('Aws::Kinesis')
  )
  context = Seahorse::Client::RequestContext.new(
    operation_name: operation_name,
    operation: config.api.operation(operation_name),
    client: self,
    params: params,
    http_response: Seahorse::Client::Http::AsyncResponse.new,
    config: config,
    tracer: tracer
  )
  context[:gem_name] = 'aws-sdk-kinesis'
  context[:gem_version] = '1.71.0'
  Seahorse::Client::Request.new(handlers, context)
end

#subscribe_to_shard(params = {}) ⇒ Types::SubscribeToShardOutput

This operation establishes an HTTP/2 connection between the consumer you specify in the ‘ConsumerARN` parameter and the shard you specify in the `ShardId` parameter. After the connection is successfully established, Kinesis Data Streams pushes records from the shard to the consumer over this connection. Before you call this operation, call RegisterStreamConsumer to register the consumer with Kinesis Data Streams.

When the ‘SubscribeToShard` call succeeds, your consumer starts receiving events of type SubscribeToShardEvent over the HTTP/2 connection for up to 5 minutes, after which time you need to call `SubscribeToShard` again to renew the subscription if you want to continue to receive records.

You can make one call to ‘SubscribeToShard` per second per registered consumer per shard. For example, if you have a 4000 shard stream and two registered stream consumers, you can make one `SubscribeToShard` request per second for each combination of shard and registered consumer, allowing you to subscribe both consumers to all 4000 shards in one second.

If you call ‘SubscribeToShard` again with the same `ConsumerARN` and `ShardId` within 5 seconds of a successful call, you’ll get a ‘ResourceInUseException`. If you call `SubscribeToShard` 5 seconds or more after a successful call, the second call takes over the subscription and the previous connection expires or fails with a `ResourceInUseException`.

For an example of how to use this operation, see [Enhanced Fan-Out Using the Kinesis Data Streams API].

[1]: docs.aws.amazon.com/streams/latest/dev/building-enhanced-consumers-api.html

Examples:

EventStream Operation Example


You can process the event once it arrives immediately, or wait until the
full response is complete and iterate through the eventstream enumerator.

To interact with event immediately, you need to register #subscribe_to_shard
with callbacks. Callbacks can be registered for specific events or for all
events, including error events.

Callbacks can be passed into the `:event_stream_handler` option or within a
block statement attached to the #subscribe_to_shard call directly. Hybrid
pattern of both is also supported.

`:event_stream_handler` option takes in either a Proc object or
Aws::Kinesis::EventStreams::SubscribeToShardEventStream object.

Usage pattern a): Callbacks with a block attached to #subscribe_to_shard
  Example for registering callbacks for all event types and an error event

  client.subscribe_to_shard( # params input# ) do |stream|
    stream.on_error_event do |event|
      # catch unmodeled error event in the stream
      raise event
      # => Aws::Errors::EventError
      # event.event_type => :error
      # event.error_code => String
      # event.error_message => String
    end

    stream.on_event do |event|
      # process all events arrive
      puts event.event_type
      ...
    end

  end

Usage pattern b): Pass in `:event_stream_handler` for #subscribe_to_shard

  1) Create a Aws::Kinesis::EventStreams::SubscribeToShardEventStream object
  Example for registering callbacks with specific events

    handler = Aws::Kinesis::EventStreams::SubscribeToShardEventStream.new
    handler.on_subscribe_to_shard_event_event do |event|
      event # => Aws::Kinesis::Types::SubscribeToShardEvent
    end
    handler.on_resource_not_found_exception_event do |event|
      event # => Aws::Kinesis::Types::ResourceNotFoundException
    end
    handler.on_resource_in_use_exception_event do |event|
      event # => Aws::Kinesis::Types::ResourceInUseException
    end
    handler.on_kms_disabled_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSDisabledException
    end
    handler.on_kms_invalid_state_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSInvalidStateException
    end
    handler.on_kms_access_denied_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSAccessDeniedException
    end
    handler.on_kms_not_found_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSNotFoundException
    end
    handler.on_kms_opt_in_required_event do |event|
      event # => Aws::Kinesis::Types::KMSOptInRequired
    end
    handler.on_kms_throttling_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSThrottlingException
    end
    handler.on_internal_failure_exception_event do |event|
      event # => Aws::Kinesis::Types::InternalFailureException
    end

  client.subscribe_to_shard( # params input #, event_stream_handler: handler)

  2) Use a Ruby Proc object
  Example for registering callbacks with specific events

  handler = Proc.new do |stream|
    stream.on_subscribe_to_shard_event_event do |event|
      event # => Aws::Kinesis::Types::SubscribeToShardEvent
    end
    stream.on_resource_not_found_exception_event do |event|
      event # => Aws::Kinesis::Types::ResourceNotFoundException
    end
    stream.on_resource_in_use_exception_event do |event|
      event # => Aws::Kinesis::Types::ResourceInUseException
    end
    stream.on_kms_disabled_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSDisabledException
    end
    stream.on_kms_invalid_state_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSInvalidStateException
    end
    stream.on_kms_access_denied_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSAccessDeniedException
    end
    stream.on_kms_not_found_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSNotFoundException
    end
    stream.on_kms_opt_in_required_event do |event|
      event # => Aws::Kinesis::Types::KMSOptInRequired
    end
    stream.on_kms_throttling_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSThrottlingException
    end
    stream.on_internal_failure_exception_event do |event|
      event # => Aws::Kinesis::Types::InternalFailureException
    end
  end

  client.subscribe_to_shard( # params input #, event_stream_handler: handler)

Usage pattern c): Hybrid pattern of a) and b)

    handler = Aws::Kinesis::EventStreams::SubscribeToShardEventStream.new
    handler.on_subscribe_to_shard_event_event do |event|
      event # => Aws::Kinesis::Types::SubscribeToShardEvent
    end
    handler.on_resource_not_found_exception_event do |event|
      event # => Aws::Kinesis::Types::ResourceNotFoundException
    end
    handler.on_resource_in_use_exception_event do |event|
      event # => Aws::Kinesis::Types::ResourceInUseException
    end
    handler.on_kms_disabled_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSDisabledException
    end
    handler.on_kms_invalid_state_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSInvalidStateException
    end
    handler.on_kms_access_denied_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSAccessDeniedException
    end
    handler.on_kms_not_found_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSNotFoundException
    end
    handler.on_kms_opt_in_required_event do |event|
      event # => Aws::Kinesis::Types::KMSOptInRequired
    end
    handler.on_kms_throttling_exception_event do |event|
      event # => Aws::Kinesis::Types::KMSThrottlingException
    end
    handler.on_internal_failure_exception_event do |event|
      event # => Aws::Kinesis::Types::InternalFailureException
    end

  client.subscribe_to_shard( # params input #, event_stream_handler: handler) do |stream|
    stream.on_error_event do |event|
      # catch unmodeled error event in the stream
      raise event
      # => Aws::Errors::EventError
      # event.event_type => :error
      # event.error_code => String
      # event.error_message => String
    end
  end

You can also iterate through events after the response complete.

Events are available at resp.event_stream # => Enumerator
For parameter input example, please refer to following request syntax

Request syntax with placeholder values


async_resp = async_client.subscribe_to_shard({
  consumer_arn: "ConsumerARN", # required
  shard_id: "ShardId", # required
  starting_position: { # required
    type: "AT_SEQUENCE_NUMBER", # required, accepts AT_SEQUENCE_NUMBER, AFTER_SEQUENCE_NUMBER, TRIM_HORIZON, LATEST, AT_TIMESTAMP
    sequence_number: "SequenceNumber",
    timestamp: Time.now,
  },
})
# => Seahorse::Client::AsyncResponse
async_resp.wait
# => Seahorse::Client::Response
# Or use async_resp.join!

Response structure


All events are available at resp.event_stream:
resp.event_stream #=> Enumerator
resp.event_stream.event_types #=> [:subscribe_to_shard_event, :resource_not_found_exception, :resource_in_use_exception, :kms_disabled_exception, :kms_invalid_state_exception, :kms_access_denied_exception, :kms_not_found_exception, :kms_opt_in_required, :kms_throttling_exception, :internal_failure_exception]

For :subscribe_to_shard_event event available at #on_subscribe_to_shard_event_event callback and response eventstream enumerator:
event.records #=> Array
event.records[0].sequence_number #=> String
event.records[0].approximate_arrival_timestamp #=> Time
event.records[0].data #=> String
event.records[0].partition_key #=> String
event.records[0].encryption_type #=> String, one of "NONE", "KMS"
event.continuation_sequence_number #=> String
event.millis_behind_latest #=> Integer
event.child_shards #=> Array
event.child_shards[0].shard_id #=> String
event.child_shards[0].parent_shards #=> Array
event.child_shards[0].parent_shards[0] #=> String
event.child_shards[0].hash_key_range.starting_hash_key #=> String
event.child_shards[0].hash_key_range.ending_hash_key #=> String

For :resource_not_found_exception event available at #on_resource_not_found_exception_event callback and response eventstream enumerator:
event.message #=> String

For :resource_in_use_exception event available at #on_resource_in_use_exception_event callback and response eventstream enumerator:
event.message #=> String

For :kms_disabled_exception event available at #on_kms_disabled_exception_event callback and response eventstream enumerator:
event.message #=> String

For :kms_invalid_state_exception event available at #on_kms_invalid_state_exception_event callback and response eventstream enumerator:
event.message #=> String

For :kms_access_denied_exception event available at #on_kms_access_denied_exception_event callback and response eventstream enumerator:
event.message #=> String

For :kms_not_found_exception event available at #on_kms_not_found_exception_event callback and response eventstream enumerator:
event.message #=> String

For :kms_opt_in_required event available at #on_kms_opt_in_required_event callback and response eventstream enumerator:
event.message #=> String

For :kms_throttling_exception event available at #on_kms_throttling_exception_event callback and response eventstream enumerator:
event.message #=> String

For :internal_failure_exception event available at #on_internal_failure_exception_event callback and response eventstream enumerator:
event.message #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :consumer_arn (required, String) —

    For this parameter, use the value you obtained when you called RegisterStreamConsumer.

  • :shard_id (required, String) —

    The ID of the shard you want to subscribe to. To see a list of all the shards for a given stream, use ListShards.

  • :starting_position (required, Types::StartingPosition) —

    The starting position in the data stream from which to start streaming.

Yields:

  • (output_event_stream_handler)

Returns:

See Also:



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# File 'lib/aws-sdk-kinesis/async_client.rb', line 656

def subscribe_to_shard(params = {}, options = {})
  params = params.dup
  output_event_stream_handler = _event_stream_handler(
    :output,
    params.delete(:output_event_stream_handler) || params.delete(:event_stream_handler),
    EventStreams::SubscribeToShardEventStream
  )

  yield(output_event_stream_handler) if block_given?

  req = build_request(:subscribe_to_shard, params)

  req.context[:output_event_stream_handler] = output_event_stream_handler
  req.handlers.add(Aws::Binary::DecodeHandler, priority: 55)

  req.send_request(options)
end