class Aws::RDS::Parameter

Public Class Methods

new(*args) click to toggle source

@overload def initialize(name, options = {})

@param [String] name
@option options [Client] :client

@overload def initialize(options = {})

@option options [required, String] :name
@option options [Client] :client
# File lib/aws-sdk-rds/parameter.rb, line 22
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)
  @waiter_block_warned = false
end

Public Instance Methods

allowed_values() click to toggle source

Specifies the valid range of values for the parameter. @return [String]

# File lib/aws-sdk-rds/parameter.rb, line 70
def allowed_values
  data[:allowed_values]
end
apply_method() click to toggle source

Indicates when to apply parameter updates. @return [String]

# File lib/aws-sdk-rds/parameter.rb, line 90
def apply_method
  data[:apply_method]
end
apply_type() click to toggle source

Specifies the engine specific parameters type. @return [String]

# File lib/aws-sdk-rds/parameter.rb, line 58
def apply_type
  data[:apply_type]
end
client() click to toggle source

@return [Client]

# File lib/aws-sdk-rds/parameter.rb, line 103
def client
  @client
end
data() click to toggle source

@raise [NotImplementedError] Raises when {#data_loaded?} is `false`. @return [Types::Parameter]

Returns the data for this {Parameter}.
# File lib/aws-sdk-rds/parameter.rb, line 118
def data
  load unless @data
  @data
end
data_loaded?() click to toggle source

@return [Boolean]

Returns `true` if this resource is loaded.  Accessing attributes or
{#data} on an unloaded resource will trigger a call to {#load}.
# File lib/aws-sdk-rds/parameter.rb, line 126
def data_loaded?
  !!@data
end
data_type() click to toggle source

Specifies the valid data type for the parameter. @return [String]

# File lib/aws-sdk-rds/parameter.rb, line 64
def data_type
  data[:data_type]
end
description() click to toggle source

Provides a description of the parameter. @return [String]

# File lib/aws-sdk-rds/parameter.rb, line 46
def description
  data[:description]
end
identifiers() click to toggle source

@deprecated @api private

# File lib/aws-sdk-rds/parameter.rb, line 229
def identifiers
  { name: @name }
end
is_modifiable() click to toggle source

Indicates whether (`true`) or not (`false`) the parameter can be modified. Some parameters have security or operational implications that prevent them from being changed. @return [Boolean]

# File lib/aws-sdk-rds/parameter.rb, line 78
def is_modifiable
  data[:is_modifiable]
end
load() click to toggle source

@raise [NotImplementedError] @api private

# File lib/aws-sdk-rds/parameter.rb, line 109
def load
  msg = "#load is not implemented, data only available via enumeration"
  raise NotImplementedError, msg
end
Also aliased as: reload
minimum_engine_version() click to toggle source

The earliest engine version to which the parameter can apply. @return [String]

# File lib/aws-sdk-rds/parameter.rb, line 84
def minimum_engine_version
  data[:minimum_engine_version]
end
name() click to toggle source

@return [String]

# File lib/aws-sdk-rds/parameter.rb, line 33
def name
  @name
end
Also aliased as: parameter_name
parameter_name()
Alias for: name
parameter_value() click to toggle source

Specifies the value of the parameter. @return [String]

# File lib/aws-sdk-rds/parameter.rb, line 40
def parameter_value
  data[:parameter_value]
end
reload()
Alias for: load
source() click to toggle source

Indicates the source of the parameter value. @return [String]

# File lib/aws-sdk-rds/parameter.rb, line 52
def source
  data[:source]
end
supported_engine_modes() click to toggle source

The valid DB engine modes. @return [Array<String>]

# File lib/aws-sdk-rds/parameter.rb, line 96
def supported_engine_modes
  data[:supported_engine_modes]
end
wait_until(options = {}, &block) click to toggle source

@deprecated Use [Aws::RDS::Client] wait_until instead

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

@note The waiting operation is performed on a copy. The original resource

remains unchanged.

## 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) do |instance|
  instance.state.name == 'running'
end

## 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

@yieldparam [Resource] resource to be used in the waiting condition.

@raise [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.

@raise [Aws::Waiters::Errors::UnexpectedError] Raised when an error is

encountered while polling for a resource that is not expected.

@raise [NotImplementedError] Raised when the resource does not

@option options [Integer] :max_attempts (10) Maximum number of attempts @option options [Integer] :delay (10) Delay between each attempt in seconds @option options [Proc] :before_attempt (nil) Callback invoked before each attempt @option options [Proc] :before_wait (nil) Callback invoked before each wait @return [Resource] if the waiter was successful

# File lib/aws-sdk-rds/parameter.rb, line 210
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

Private Instance Methods

extract_name(args, options) click to toggle source
# File lib/aws-sdk-rds/parameter.rb, line 236
def extract_name(args, options)
  value = args[0] || options.delete(:name)
  case value
  when String then value
  when nil then raise ArgumentError, "missing required option :name"
  else
    msg = "expected :name to be a String, got #{value.class}"
    raise ArgumentError, msg
  end
end