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Class: Aws::RDS::DBEngine

Inherits:
Object
  • Object
show all
Defined in:
gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb

Defined Under Namespace

Classes: Collection

Associations collapse

Read-Only Attributes collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options = {}) ⇒ DBEngine #initialize(options = {}) ⇒ DBEngine

Returns a new instance of DBEngine

Overloads:

  • #initialize(name, options = {}) ⇒ DBEngine

    Parameters:

    • name (String)

    Options Hash (options):

  • #initialize(options = {}) ⇒ DBEngine

    Options Hash (options):

    • :name (required, String)
    • :client (Client)


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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 19

def initialize(*args)
  options = Hash === args.last ? args.pop.dup : {}
  @name = extract_name(args, options)
  @data = Aws::EmptyStructure.new
  @client = options.delete(:client) || Client.new(options)
end

Instance Method Details

#clientClient

Returns:



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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 36

def client
  @client
end

#data_loaded?Boolean

Returns true if this resource is loaded. Accessing attributes or #data on an unloaded resource will trigger a call to #load.

Returns:

  • (Boolean)

    Returns true if this resource is loaded. Accessing attributes or #data on an unloaded resource will trigger a call to #load.



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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 57

def data_loaded?
  !!@data
end

#nameString

Returns:

  • (String)


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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 29

def name
  @name
end

#option_group_options(options = {}) ⇒ OptionGroupOption::Collection

Examples:

Request syntax with placeholder values


option_group_options = db_engine.option_group_options({
  major_engine_version: "String",
  filters: [
    {
      name: "String", # required
      values: ["String"], # required
    },
  ],
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :major_engine_version (String)

    If specified, filters the results to include only options for the specified major engine version.

  • :filters (Array<Types::Filter>)

    This parameter is not currently supported.

Returns:



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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 176

def option_group_options(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(engine_name: @name)
    resp = @client.describe_option_group_options(options)
    resp.each_page do |page|
      batch = []
      page.data.option_group_options.each do |o|
        batch << OptionGroupOption.new(
          name: o.name,
          data: o,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  OptionGroupOption::Collection.new(batches)
end

#option_groups(options = {}) ⇒ OptionGroup::Collection

Examples:

Request syntax with placeholder values


option_groups = db_engine.option_groups({
  option_group_name: "String",
  filters: [
    {
      name: "String", # required
      values: ["String"], # required
    },
  ],
  major_engine_version: "String",
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :option_group_name (String)

    The name of the option group to describe. Cannot be supplied together with EngineName or MajorEngineVersion.

  • :filters (Array<Types::Filter>)

    This parameter is not currently supported.

  • :major_engine_version (String)

    Filters the list of option groups to only include groups associated with a specific database engine version. If specified, then EngineName must also be specified.

Returns:



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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 218

def option_groups(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(engine_name: @name)
    resp = @client.describe_option_groups(options)
    resp.each_page do |page|
      batch = []
      page.data.option_groups_list.each do |o|
        batch << OptionGroup.new(
          name: o.option_group_name,
          data: o,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  OptionGroup::Collection.new(batches)
end

#version(version) ⇒ DBEngineVersion

Parameters:

  • version (String)

Returns:



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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 239

def version(version)
  DBEngineVersion.new(
    engine_name: @name,
    version: version,
    client: @client
  )
end

#versions(options = {}) ⇒ DBEngineVersion::Collection

Examples:

Request syntax with placeholder values


versions = db_engine.versions({
  engine_version: "String",
  db_parameter_group_family: "String",
  filters: [
    {
      name: "String", # required
      values: ["String"], # required
    },
  ],
  default_only: false,
  list_supported_character_sets: false,
  list_supported_timezones: false,
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :engine_version (String)

    The database engine version to return.

    Example: 5.1.49

  • :db_parameter_group_family (String)

    The name of a specific DB parameter group family to return details for.

    Constraints:

    • If supplied, must match an existing DBParameterGroupFamily.

    ^

  • :filters (Array<Types::Filter>)

    Not currently supported.

  • :default_only (Boolean)

    Indicates that only the default version of the specified engine or engine and major version combination is returned.

  • :list_supported_character_sets (Boolean)

    If this parameter is specified and the requested engine supports the CharacterSetName parameter for CreateDBInstance, the response includes a list of supported character sets for each engine version.

  • :list_supported_timezones (Boolean)

    If this parameter is specified and the requested engine supports the TimeZone parameter for CreateDBInstance, the response includes a list of supported time zones for each engine version.

Returns:



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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 290

def versions(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(engine: @name)
    resp = @client.describe_db_engine_versions(options)
    resp.each_page do |page|
      batch = []
      page.data.db_engine_versions.each do |d|
        batch << DBEngineVersion.new(
          engine_name: @name,
          version: d.engine_version,
          data: d,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  DBEngineVersion::Collection.new(batches)
end

#wait_until(options = {}, &block) ⇒ Resource

Deprecated.

Use [Aws::RDS::Client] #wait_until instead

Note:

The waiting operation is performed on a copy. The original resource remains unchanged

Waiter polls an API operation until a resource enters a desired state.

Basic Usage

Waiter will polls until it is successful, it fails by entering a terminal state, or until a maximum number of attempts are made.

# polls in a loop until condition is true
resource.wait_until(options) {|resource| condition}

Example

instance.wait_until(max_attempts:10, delay:5) {|instance| instance.state.name == 'running' }

Configuration

You can configure the maximum number of polling attempts, and the delay (in seconds) between each polling attempt. The waiting condition is set by passing a block to #wait_until:

# poll for ~25 seconds
resource.wait_until(max_attempts:5,delay:5) {|resource|...}

Callbacks

You can be notified before each polling attempt and before each delay. If you throw :success or :failure from these callbacks, it will terminate the waiter.

started_at = Time.now
# poll for 1 hour, instead of a number of attempts
proc = Proc.new do |attempts, response|
  throw :failure if Time.now - started_at > 3600
end

  # disable max attempts
instance.wait_until(before_wait:proc, max_attempts:nil) {...}

Handling Errors

When a waiter is successful, it returns the Resource. When a waiter fails, it raises an error.

begin
  resource.wait_until(...)
rescue Aws::Waiters::Errors::WaiterFailed
  # resource did not enter the desired state in time
end

attempts attempt in seconds invoked before each attempt invoked before each wait

Parameters:

  • options (Hash) (defaults to: {})

    a customizable set of options

Options Hash (options):

  • :max_attempts (Integer) — default: 10

    Maximum number of

  • :delay (Integer) — default: 10

    Delay between each

  • :before_attempt (Proc) — default: nil

    Callback

  • :before_wait (Proc) — default: nil

    Callback

Returns:

  • (Resource)

    if the waiter was successful

Raises:

  • (Aws::Waiters::Errors::FailureStateError)

    Raised when the waiter terminates because the waiter has entered a state that it will not transition out of, preventing success.

    yet successful.

  • (Aws::Waiters::Errors::UnexpectedError)

    Raised when an error is encountered while polling for a resource that is not expected.

  • (NotImplementedError)

    Raised when the resource does not



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# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_engine.rb', line 139

def wait_until(options = {}, &block)
  self_copy = self.dup
  attempts = 0
  options[:max_attempts] = 10 unless options.key?(:max_attempts)
  options[:delay] ||= 10
  options[:poller] = Proc.new do
    attempts += 1
    if block.call(self_copy)
      [:success, self_copy]
    else
      self_copy.reload unless attempts == options[:max_attempts]
      :retry
    end
  end
  Aws::Waiters::Waiter.new(options).wait({})
end