You are viewing documentation for version 3 of the AWS SDK for Ruby. Version 2 documentation can be found here.

Class: Aws::RDS::DBParameterGroup

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

Defined Under Namespace

Classes: Collection

Actions collapse

Associations collapse

Read-Only Attributes collapse

Instance Method Summary collapse

Constructor Details

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

Returns a new instance of DBParameterGroup

Overloads:

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

    Parameters:

    • name (String)

    Options Hash (options):

  • #initialize(options = {}) ⇒ DBParameterGroup

    Options Hash (options):

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


19
20
21
22
23
24
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 19

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

Instance Method Details

#clientClient

Returns:



57
58
59
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 57

def client
  @client
end

#copy(options = {}) ⇒ DBParameterGroup

Examples:

Request syntax with placeholder values


dbparametergroup = db_parameter_group.copy({
  target_db_parameter_group_identifier: "String", # required
  target_db_parameter_group_description: "String", # required
  tags: [
    {
      key: "String",
      value: "String",
    },
  ],
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :target_db_parameter_group_identifier (required, String)

    The identifier for the copied DB parameter group.

    Constraints:

    • Can't be null, empty, or blank

    • Must contain from 1 to 255 letters, numbers, or hyphens

    • First character must be a letter

    • Can't end with a hyphen or contain two consecutive hyphens

    Example: my-db-parameter-group

  • :target_db_parameter_group_description (required, String)

    A description for the copied DB parameter group.

  • :tags (Array<Types::Tag>)

    A list of tags. For more information, see Tagging Amazon RDS Resources in the Amazon RDS User Guide.

Returns:



266
267
268
269
270
271
272
273
274
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 266

def copy(options = {})
  options = options.merge(source_db_parameter_group_identifier: @name)
  resp = @client.copy_db_parameter_group(options)
  DBParameterGroup.new(
    name: resp.data.db_parameter_group.db_parameter_group_name,
    data: resp.data.db_parameter_group,
    client: @client
  )
end

#create(options = {}) ⇒ DBParameterGroup

Examples:

Request syntax with placeholder values


dbparametergroup = db_parameter_group.create({
  db_parameter_group_family: "String", # required
  description: "String", # required
  tags: [
    {
      key: "String",
      value: "String",
    },
  ],
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :db_parameter_group_family (required, String)

    The DB parameter group family name. A DB parameter group can be associated with one and only one DB parameter group family, and can be applied only to a DB instance running a database engine and engine version compatible with that DB parameter group family.

    To list all of the available parameter group families, use the following command:

    aws rds describe-db-engine-versions --query "DBEngineVersions[].DBParameterGroupFamily"

    The output contains duplicates.

  • :description (required, String)

    The description for the DB parameter group.

  • :tags (Array<Types::Tag>)

    Tags to assign to the DB parameter group.

Returns:



219
220
221
222
223
224
225
226
227
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 219

def create(options = {})
  options = options.merge(db_parameter_group_name: @name)
  resp = @client.create_db_parameter_group(options)
  DBParameterGroup.new(
    name: resp.data.db_parameter_group.db_parameter_group_name,
    data: resp.data.db_parameter_group,
    client: @client
  )
end

#dataTypes::DBParameterGroup

Returns the data for this Aws::RDS::DBParameterGroup. Calls Client#describe_db_parameter_groups if #data_loaded? is false.

Returns:



77
78
79
80
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 77

def data
  load unless @data
  @data
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.



85
86
87
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 85

def data_loaded?
  !!@data
end

#db_parameter_group_arnString

The Amazon Resource Name (ARN) for the DB parameter group.

Returns:

  • (String)


50
51
52
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 50

def db_parameter_group_arn
  data[:db_parameter_group_arn]
end

#db_parameter_group_familyString

Provides the name of the DB parameter group family that this DB parameter group is compatible with.

Returns:

  • (String)


37
38
39
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 37

def db_parameter_group_family
  data[:db_parameter_group_family]
end

#delete(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


db_parameter_group.delete()

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Returns:

  • (EmptyStructure)


281
282
283
284
285
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 281

def delete(options = {})
  options = options.merge(db_parameter_group_name: @name)
  resp = @client.delete_db_parameter_group(options)
  resp.data
end

#descriptionString

Provides the customer-specified description for this DB parameter group.

Returns:

  • (String)


44
45
46
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 44

def description
  data[:description]
end

#events(options = {}) ⇒ Event::Collection

Examples:

Request syntax with placeholder values


events = db_parameter_group.events({
  start_time: Time.now,
  end_time: Time.now,
  duration: 1,
  event_categories: ["String"],
  filters: [
    {
      name: "String", # required
      values: ["String"], # required
    },
  ],
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :start_time (Time, DateTime, Date, Integer, String)

    The beginning of the time interval to retrieve events for, specified in ISO 8601 format. For more information about ISO 8601, go to the ISO8601 Wikipedia page.

    Example: 2009-07-08T18:00Z

  • :end_time (Time, DateTime, Date, Integer, String)

    The end of the time interval for which to retrieve events, specified in ISO 8601 format. For more information about ISO 8601, go to the ISO8601 Wikipedia page.

    Example: 2009-07-08T18:00Z

  • :duration (Integer)

    The number of minutes to retrieve events for.

    Default: 60

  • :event_categories (Array<String>)

    A list of event categories that trigger notifications for a event notification subscription.

  • :filters (Array<Types::Filter>)

    This parameter isn't currently supported.

Returns:



480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 480

def events(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(
      source_type: "db-parameter-group",
      source_identifier: @name
    )
    resp = @client.describe_events(options)
    resp.each_page do |page|
      batch = []
      page.data.events.each do |e|
        batch << Event.new(
          source_id: e.source_identifier,
          date: e.date,
          data: e,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  Event::Collection.new(batches)
end

#loadself Also known as: reload

Loads, or reloads #data for the current Aws::RDS::DBParameterGroup. Returns self making it possible to chain methods.

db_parameter_group.reload.data

Returns:

  • (self)


67
68
69
70
71
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 67

def load
  resp = @client.describe_db_parameter_groups(db_parameter_group_name: @name)
  @data = resp.db_parameter_groups[0]
  self
end

#modify(options = {}) ⇒ DBParameterGroup

Examples:

Request syntax with placeholder values


dbparametergroup = db_parameter_group.modify({
  parameters: [ # required
    {
      parameter_name: "String",
      parameter_value: "String",
      description: "String",
      source: "String",
      apply_type: "String",
      data_type: "String",
      allowed_values: "String",
      is_modifiable: false,
      minimum_engine_version: "String",
      apply_method: "immediate", # accepts immediate, pending-reboot
      supported_engine_modes: ["String"],
    },
  ],
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :parameters (required, Array<Types::Parameter>)

    An array of parameter names, values, and the apply method for the parameter update. At least one parameter name, value, and apply method must be supplied; subsequent arguments are optional. A maximum of 20 parameters can be modified in a single request.

    Valid Values (for the application method): immediate | pending-reboot

    You can use the immediate value with dynamic parameters only. You can use the pending-reboot value for both dynamic and static parameters, and changes are applied when you reboot the DB instance without failover.

Returns:



323
324
325
326
327
328
329
330
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 323

def modify(options = {})
  options = options.merge(db_parameter_group_name: @name)
  resp = @client.modify_db_parameter_group(options)
  DBParameterGroup.new(
    name: resp.data.db_parameter_group_name,
    client: @client
  )
end

#nameString Also known as: db_parameter_group_name

Returns:

  • (String)


29
30
31
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 29

def name
  @name
end

#parameters(options = {}) ⇒ Parameter::Collection

Examples:

Request syntax with placeholder values


parameters = db_parameter_group.parameters({
  source: "String",
  filters: [
    {
      name: "String", # required
      values: ["String"], # required
    },
  ],
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :source (String)

    The parameter types to return.

    Default: All parameter types returned

    Valid Values: user | system | engine-default

  • :filters (Array<Types::Filter>)

    This parameter isn't currently supported.

Returns:



524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 524

def parameters(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(db_parameter_group_name: @name)
    resp = @client.describe_db_parameters(options)
    resp.each_page do |page|
      batch = []
      page.data.parameters.each do |p|
        batch << Parameter.new(
          name: p.parameter_name,
          data: p,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  Parameter::Collection.new(batches)
end

#reset(options = {}) ⇒ DBParameterGroup

Examples:

Request syntax with placeholder values


dbparametergroup = db_parameter_group.reset({
  reset_all_parameters: false,
  parameters: [
    {
      parameter_name: "String",
      parameter_value: "String",
      description: "String",
      source: "String",
      apply_type: "String",
      data_type: "String",
      allowed_values: "String",
      is_modifiable: false,
      minimum_engine_version: "String",
      apply_method: "immediate", # accepts immediate, pending-reboot
      supported_engine_modes: ["String"],
    },
  ],
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :reset_all_parameters (Boolean)

    A value that indicates whether to reset all parameters in the DB parameter group to default values. By default, all parameters in the DB parameter group are reset to default values.

  • :parameters (Array<Types::Parameter>)

    To reset the entire DB parameter group, specify the DBParameterGroup name and ResetAllParameters parameters. To reset specific parameters, provide a list of the following: ParameterName and ApplyMethod. A maximum of 20 parameters can be modified in a single request.

    MySQL

    Valid Values (for Apply method): immediate | pending-reboot

    You can use the immediate value with dynamic parameters only. You can use the pending-reboot value for both dynamic and static parameters, and changes are applied when DB instance reboots.

    MariaDB

    Valid Values (for Apply method): immediate | pending-reboot

    You can use the immediate value with dynamic parameters only. You can use the pending-reboot value for both dynamic and static parameters, and changes are applied when DB instance reboots.

    Oracle

    Valid Values (for Apply method): pending-reboot

Returns:



384
385
386
387
388
389
390
391
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 384

def reset(options = {})
  options = options.merge(db_parameter_group_name: @name)
  resp = @client.reset_db_parameter_group(options)
  DBParameterGroup.new(
    name: resp.data.db_parameter_group_name,
    client: @client
  )
end

#subscribe_to(options = {}) ⇒ EventSubscription

Examples:

Request syntax with placeholder values


eventsubscription = db_parameter_group.subscribe_to({
  subscription_name: "String", # required
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :subscription_name (required, String)

    The name of the RDS event notification subscription you want to add a source identifier to.

Returns:



403
404
405
406
407
408
409
410
411
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 403

def subscribe_to(options = {})
  options = options.merge(source_identifier: @name)
  resp = @client.add_source_identifier_to_subscription(options)
  EventSubscription.new(
    name: resp.data.event_subscription.cust_subscription_id,
    data: resp.data.event_subscription,
    client: @client
  )
end

#unsubscribe_from(options = {}) ⇒ EventSubscription

Examples:

Request syntax with placeholder values


eventsubscription = db_parameter_group.unsubscribe_from({
  subscription_name: "String", # required
})

Parameters:

  • options (Hash) (defaults to: {})

    ({})

Options Hash (options):

  • :subscription_name (required, String)

    The name of the RDS event notification subscription you want to remove a source identifier from.

Returns:



423
424
425
426
427
428
429
430
431
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 423

def unsubscribe_from(options = {})
  options = options.merge(source_identifier: @name)
  resp = @client.remove_source_identifier_from_subscription(options)
  EventSubscription.new(
    name: resp.data.event_subscription.cust_subscription_id,
    data: resp.data.event_subscription,
    client: @client
  )
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



167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
# File 'gems/aws-sdk-rds/lib/aws-sdk-rds/db_parameter_group.rb', line 167

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