Class: Wavefront::Response

Inherits:
Object
  • Object
show all
Defined in:
lib/wavefront-sdk/response.rb

Overview

Every API path has its own response class, which allows us to provide a stable interface. If the API changes underneath us, the SDK will break in a predictable way, throwing a Wavefront::Exception::UnparseableResponse exception.

Most Wavefront::Response classes present the returned data in two parts, each accessible by dot notation.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(json, status, debug = false) ⇒ Response

Create and return a Wavefront::Response object rubocop:disable Metrics/CyclomaticComplexity rubocop:disable Metrics/PerceivedComplexity

Parameters:

  • json (String) —

    a raw response body from the Wavefront API

  • status (Integer) —

    HTTP return code from the API

  • debug (Boolean) (defaults to: false) —

    whether or not to print the exception message if one is thrown

Raises:



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# File 'lib/wavefront-sdk/response.rb', line 34

def initialize(json, status, debug = false)
  raw = raw_response(json, status)
  @status = build_status(raw, status)
  @response = build_response(raw)

  p self if debug
rescue StandardError => e
  puts "could not parse:\n#{json}" if debug
  puts e.message if debug
  raise Wavefront::Exception::UnparseableResponse
end

Instance Attribute Details

#response ⇒ Map (readonly)

Returns the response from the API turned into a Map, which allows.

Returns:

  • (Map) —

    the response from the API turned into a Map, which allows



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# File 'lib/wavefront-sdk/response.rb', line 20

class Response
  attr_reader :status, :response

  # Create and return a Wavefront::Response object
  # @param json [String] a raw response body from the Wavefront API
  # @param status [Integer] HTTP return code from the API
  # @param debug [Boolean] whether or not to print the exception
  #   message if one is thrown
  # @raise [Wavefront::Exception::UnparseableResponse] if the
  #   response cannot be parsed. This may be because the API
  #   has changed underneath us.
  #
  # rubocop:disable Metrics/CyclomaticComplexity
  # rubocop:disable Metrics/PerceivedComplexity
  def initialize(json, status, debug = false)
    raw = raw_response(json, status)
    @status = build_status(raw, status)
    @response = build_response(raw)

    p self if debug
  rescue StandardError => e
    puts "could not parse:\n#{json}" if debug
    puts e.message if debug
    raise Wavefront::Exception::UnparseableResponse
  end

  def raw_response(json, status)
    json.empty? ? {} : JSON.parse(json, symbolize_names: true)
  rescue StandardError
    { message: json, code: status }
  end

  def build_status(raw, status)
    Wavefront::Type::Status.new(raw, status)
  end

  def build_response(raw)
    return Map.new unless raw.is_a?(Hash)
    return Map.new(raw) unless raw.key?(:response)
    return raw[:response] unless raw[:response].is_a?(Hash)
    Map(raw[:response])
  end
end

#status ⇒ Wavefront::Types::Status (readonly)

Returns:

  • (Wavefront::Types::Status) 


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# File 'lib/wavefront-sdk/response.rb', line 20

class Response
  attr_reader :status, :response

  # Create and return a Wavefront::Response object
  # @param json [String] a raw response body from the Wavefront API
  # @param status [Integer] HTTP return code from the API
  # @param debug [Boolean] whether or not to print the exception
  #   message if one is thrown
  # @raise [Wavefront::Exception::UnparseableResponse] if the
  #   response cannot be parsed. This may be because the API
  #   has changed underneath us.
  #
  # rubocop:disable Metrics/CyclomaticComplexity
  # rubocop:disable Metrics/PerceivedComplexity
  def initialize(json, status, debug = false)
    raw = raw_response(json, status)
    @status = build_status(raw, status)
    @response = build_response(raw)

    p self if debug
  rescue StandardError => e
    puts "could not parse:\n#{json}" if debug
    puts e.message if debug
    raise Wavefront::Exception::UnparseableResponse
  end

  def raw_response(json, status)
    json.empty? ? {} : JSON.parse(json, symbolize_names: true)
  rescue StandardError
    { message: json, code: status }
  end

  def build_status(raw, status)
    Wavefront::Type::Status.new(raw, status)
  end

  def build_response(raw)
    return Map.new unless raw.is_a?(Hash)
    return Map.new(raw) unless raw.key?(:response)
    return raw[:response] unless raw[:response].is_a?(Hash)
    Map(raw[:response])
  end
end

Instance Method Details

#build_response(raw) ⇒ Object 



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# File 'lib/wavefront-sdk/response.rb', line 56

def build_response(raw)
  return Map.new unless raw.is_a?(Hash)
  return Map.new(raw) unless raw.key?(:response)
  return raw[:response] unless raw[:response].is_a?(Hash)
  Map(raw[:response])
end

#build_status(raw, status) ⇒ Object 



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# File 'lib/wavefront-sdk/response.rb', line 52

def build_status(raw, status)
  Wavefront::Type::Status.new(raw, status)
end

#raw_response(json, status) ⇒ Object 



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# File 'lib/wavefront-sdk/response.rb', line 46

def raw_response(json, status)
  json.empty? ? {} : JSON.parse(json, symbolize_names: true)
rescue StandardError
  { message: json, code: status }
end