class Aws::QLDBSession::Client

An API client for QLDBSession. To construct a client, you need to configure a `:region` and `:credentials`.

client = Aws::QLDBSession::Client.new(
  region: region_name,
  credentials: credentials,
  # ...
)

For details on configuring region and credentials see the [developer guide](/sdk-for-ruby/v3/developer-guide/setup-config.html).

See {#initialize} for a full list of supported configuration options.

Attributes

identifier[R]

@api private

Public Class Methods

errors_module() click to toggle source

@api private

# File lib/aws-sdk-qldbsession/client.rb, line 504
def errors_module
  Errors
end
new(*args) click to toggle source

@overload initialize(options)

@param [Hash] options
@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`, and `:session_token` options.
  * ENV['AWS_ACCESS_KEY_ID'], ENV['AWS_SECRET_ACCESS_KEY']
  * `~/.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::InstanceProfileCredentails` or `Aws::ECSCredentials` to
    enable retries and extended timeouts.

@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 [Boolean] :active_endpoint_cache (false)
  When set to `true`, a thread polling for endpoints will be running in
  the background every 60 secs (default). Defaults to `false`.

@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] :client_side_monitoring (false)
  When `true`, client-side metrics will be collected for all API requests from
  this client.

@option options [String] :client_side_monitoring_client_id ("")
  Allows you to provide an identifier for this client which will be attached to
  all generated client side metrics. Defaults to an empty string.

@option options [String] :client_side_monitoring_host ("127.0.0.1")
  Allows you to specify the DNS hostname or IPv4 or IPv6 address that the client
  side monitoring agent is running on, where client metrics will be published via UDP.

@option options [Integer] :client_side_monitoring_port (31000)
  Required for publishing client metrics. The port that the client side monitoring
  agent is running on, where client metrics will be published via UDP.

@option options [Aws::ClientSideMonitoring::Publisher] :client_side_monitoring_publisher (Aws::ClientSideMonitoring::Publisher)
  Allows you to provide a custom client-side monitoring publisher class. By default,
  will use the Client Side Monitoring Agent Publisher.

@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 [Boolean] :disable_host_prefix_injection (false)
  Set to true to disable SDK automatically adding host prefix
  to default service endpoint when available.

@option options [String] :endpoint
  The client endpoint is normally constructed from the `:region`
  option. You should only configure an `:endpoint` when connecting
  to test or custom endpoints. This should be a valid HTTP(S) URI.

@option options [Integer] :endpoint_cache_max_entries (1000)
  Used for the maximum size limit of the LRU cache storing endpoints data
  for endpoint discovery enabled operations. Defaults to 1000.

@option options [Integer] :endpoint_cache_max_threads (10)
  Used for the maximum threads in use for polling endpoints to be cached, defaults to 10.

@option options [Integer] :endpoint_cache_poll_interval (60)
  When :endpoint_discovery and :active_endpoint_cache is enabled,
  Use this option to config the time interval in seconds for making
  requests fetching endpoints information. Defaults to 60 sec.

@option options [Boolean] :endpoint_discovery (false)
  When set to `true`, endpoint discovery will be enabled for operations when available.

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

@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] :secret_access_key

@option options [String] :session_token

@option options [Boolean] :simple_json (false)
  Disables request parameter conversion, validation, and formatting.
  Also disable response data type conversions. 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.

  When `:simple_json` is enabled, the request parameters hash must
  be formatted exactly as the DynamoDB API expects.

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

@option options [URI::HTTP,String] :http_proxy A proxy to send
  requests through.  Formatted like 'http://proxy.com:123'.

@option options [Float] :http_open_timeout (15) The number of
  seconds to wait when opening a HTTP session before raising a
  `Timeout::Error`.

@option options [Integer] :http_read_timeout (60) The default
  number of seconds to wait for response data.  This value can
  safely be set per-request on the session.

@option options [Float] :http_idle_timeout (5) The number of
  seconds a connection is allowed to sit idle before it is
  considered stale.  Stale connections are closed and removed
  from the pool before making a request.

@option options [Float] :http_continue_timeout (1) The number of
  seconds to wait for a 100-continue response before sending the
  request body.  This option has no effect unless the request has
  "Expect" header set to "100-continue".  Defaults to `nil` which
  disables this behaviour.  This value can safely be set per
  request on the session.

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

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

@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_bundle` or `:ssl_ca_directory` the 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 the
  system default will be used if available.
Calls superclass method
# File lib/aws-sdk-qldbsession/client.rb, line 334
def initialize(*args)
  super
end

Public Instance Methods

build_request(operation_name, params = {}) click to toggle source

@param params ({}) @api private

# File lib/aws-sdk-qldbsession/client.rb, line 479
def build_request(operation_name, params = {})
  handlers = @handlers.for(operation_name)
  context = Seahorse::Client::RequestContext.new(
    operation_name: operation_name,
    operation: config.api.operation(operation_name),
    client: self,
    params: params,
    config: config)
  context[:gem_name] = 'aws-sdk-qldbsession'
  context[:gem_version] = '1.16.0'
  Seahorse::Client::Request.new(handlers, context)
end
send_command(params = {}, options = {}) click to toggle source

Sends a command to an Amazon QLDB ledger.

<note markdown=“1”> Instead of interacting directly with this API, we recommend using the QLDB driver or the QLDB shell to execute data transactions on a ledger.

* If you are working with an AWS SDK, use the QLDB driver. The driver
 provides a high-level abstraction layer above this *QLDB Session*
 data plane and manages `SendCommand` API calls for you. For
 information and a list of supported programming languages, see
 [Getting started with the driver][1] in the *Amazon QLDB Developer
 Guide*.
  • If you are working with the AWS Command Line Interface (AWS CLI), use the QLDB shell. The shell is a command line interface that uses the QLDB driver to interact with a ledger. For information, see [Accessing Amazon QLDB using the QLDB shell].

</note>

[1]: docs.aws.amazon.com/qldb/latest/developerguide/getting-started-driver.html [2]: docs.aws.amazon.com/qldb/latest/developerguide/data-shell.html

@option params [String] :session_token

Specifies the session token for the current command. A session token
is constant throughout the life of the session.

To obtain a session token, run the `StartSession` command. This
`SessionToken` is required for every subsequent command that is issued
during the current session.

@option params [Types::StartSessionRequest] :start_session

Command to start a new session. A session token is obtained as part of
the response.

@option params [Types::StartTransactionRequest] :start_transaction

Command to start a new transaction.

@option params [Types::EndSessionRequest] :end_session

Command to end the current session.

@option params [Types::CommitTransactionRequest] :commit_transaction

Command to commit the specified transaction.

@option params [Types::AbortTransactionRequest] :abort_transaction

Command to abort the current transaction.

@option params [Types::ExecuteStatementRequest] :execute_statement

Command to execute a statement in the specified transaction.

@option params [Types::FetchPageRequest] :fetch_page

Command to fetch a page.

@return [Types::SendCommandResult] Returns a {Seahorse::Client::Response response} object which responds to the following methods:

* {Types::SendCommandResult#start_session #start_session} => Types::StartSessionResult
* {Types::SendCommandResult#start_transaction #start_transaction} => Types::StartTransactionResult
* {Types::SendCommandResult#end_session #end_session} => Types::EndSessionResult
* {Types::SendCommandResult#commit_transaction #commit_transaction} => Types::CommitTransactionResult
* {Types::SendCommandResult#abort_transaction #abort_transaction} => Types::AbortTransactionResult
* {Types::SendCommandResult#execute_statement #execute_statement} => Types::ExecuteStatementResult
* {Types::SendCommandResult#fetch_page #fetch_page} => Types::FetchPageResult

@example Request syntax with placeholder values

resp = client.send_command({
  session_token: "SessionToken",
  start_session: {
    ledger_name: "LedgerName", # required
  },
  start_transaction: {
  },
  end_session: {
  },
  commit_transaction: {
    transaction_id: "TransactionId", # required
    commit_digest: "data", # required
  },
  abort_transaction: {
  },
  execute_statement: {
    transaction_id: "TransactionId", # required
    statement: "Statement", # required
    parameters: [
      {
        ion_binary: "data",
        ion_text: "IonText",
      },
    ],
  },
  fetch_page: {
    transaction_id: "TransactionId", # required
    next_page_token: "PageToken", # required
  },
})

@example Response structure

resp.start_session.session_token #=> String
resp.start_session.timing_information.processing_time_milliseconds #=> Integer
resp.start_transaction.transaction_id #=> String
resp.start_transaction.timing_information.processing_time_milliseconds #=> Integer
resp.end_session.timing_information.processing_time_milliseconds #=> Integer
resp.commit_transaction.transaction_id #=> String
resp.commit_transaction.commit_digest #=> String
resp.commit_transaction.timing_information.processing_time_milliseconds #=> Integer
resp.commit_transaction.consumed_i_os.read_i_os #=> Integer
resp.commit_transaction.consumed_i_os.write_i_os #=> Integer
resp.abort_transaction.timing_information.processing_time_milliseconds #=> Integer
resp.execute_statement.first_page.values #=> Array
resp.execute_statement.first_page.values[0].ion_binary #=> String
resp.execute_statement.first_page.values[0].ion_text #=> String
resp.execute_statement.first_page.next_page_token #=> String
resp.execute_statement.timing_information.processing_time_milliseconds #=> Integer
resp.execute_statement.consumed_i_os.read_i_os #=> Integer
resp.execute_statement.consumed_i_os.write_i_os #=> Integer
resp.fetch_page.page.values #=> Array
resp.fetch_page.page.values[0].ion_binary #=> String
resp.fetch_page.page.values[0].ion_text #=> String
resp.fetch_page.page.next_page_token #=> String
resp.fetch_page.timing_information.processing_time_milliseconds #=> Integer
resp.fetch_page.consumed_i_os.read_i_os #=> Integer
resp.fetch_page.consumed_i_os.write_i_os #=> Integer

@see docs.aws.amazon.com/goto/WebAPI/qldb-session-2019-07-11/SendCommand AWS API Documentation

@overload send_command(params = {}) @param [Hash] params ({})

# File lib/aws-sdk-qldbsession/client.rb, line 470
def send_command(params = {}, options = {})
  req = build_request(:send_command, params)
  req.send_request(options)
end
waiter_names() click to toggle source

@api private @deprecated

# File lib/aws-sdk-qldbsession/client.rb, line 494
def waiter_names
  []
end