Class: Fog::Metering::OpenStack::Real

Inherits:
Object
  • Object
show all
Defined in:
lib/fog/openstack/metering.rb,
lib/fog/openstack/requests/metering/get_samples.rb,
lib/fog/openstack/requests/metering/list_meters.rb,
lib/fog/openstack/requests/metering/get_resource.rb,
lib/fog/openstack/requests/metering/get_statistics.rb,
lib/fog/openstack/requests/metering/list_resources.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Real

Returns a new instance of Real.



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# File 'lib/fog/openstack/metering.rb', line 91

def initialize(options={})
  @openstack_auth_token = options[:openstack_auth_token]

  unless @openstack_auth_token
    missing_credentials = Array.new
    @openstack_api_key  = options[:openstack_api_key]
    @openstack_username = options[:openstack_username]

    missing_credentials << :openstack_api_key  unless @openstack_api_key
    missing_credentials << :openstack_username unless @openstack_username
    raise ArgumentError, "Missing required arguments: #{missing_credentials.join(', ')}" unless missing_credentials.empty?
  end

  @openstack_tenant               = options[:openstack_tenant]
  @openstack_auth_uri             = URI.parse(options[:openstack_auth_url])
  @openstack_management_url       = options[:openstack_management_url]
  @openstack_must_reauthenticate  = false
  @openstack_service_type         = options[:openstack_service_type] || ['metering']
  @openstack_service_name         = options[:openstack_service_name]

  @openstack_endpoint_type        = options[:openstack_endpoint_type] || 'adminURL'
  @connection_options = options[:connection_options] || {}

  @current_user = options[:current_user]
  @current_tenant = options[:current_tenant]

  authenticate

  @persistent = options[:persistent] || false
  @connection = Fog::Connection.new("#{@scheme}://#{@host}:#{@port}", @persistent, @connection_options)
end

Instance Attribute Details

#current_tenant ⇒ Object (readonly)

Returns the value of attribute current_tenant.



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# File 'lib/fog/openstack/metering.rb', line 89

def current_tenant
  @current_tenant
end

#current_user ⇒ Object (readonly)

Returns the value of attribute current_user.



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# File 'lib/fog/openstack/metering.rb', line 88

def current_user
  @current_user
end

Instance Method Details

#credentials ⇒ Object 



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# File 'lib/fog/openstack/metering.rb', line 123

def credentials
  { :provider                 => 'openstack',
    :openstack_auth_url       => @openstack_auth_uri.to_s,
    :openstack_auth_token     => @auth_token,
    :openstack_management_url => @openstack_management_url,
    :current_user             => @current_user,
    :current_tenant           => @current_tenant }
end

#get_resource(resource_id) ⇒ Object 



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# File 'lib/fog/openstack/requests/metering/get_resource.rb', line 6

def get_resource(resource_id)
  request(
    :expects  => 200,
    :method   => 'GET',
    :path     => "resources/#{resource_id}"
  )
end

#get_samples(meter_id, options = []) ⇒ Object 



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# File 'lib/fog/openstack/requests/metering/get_samples.rb', line 6

def get_samples(meter_id, options=[])

  data = {
    'q' => Array.new
  }

  options.each do |opt|
    filter = {}

    ['field', 'op', 'value'].each do |key|
      filter[key] = opt[key] if opt[key]
    end

    data['q'] << filter unless filter.empty?
  end

  request(
    :body     => Fog::JSON.encode(data),
    :expects  => 200,
    :method   => 'GET',
    :path     => "meters/#{meter_id}"
  )
end

#get_statistics(meter_id, options = {}) ⇒ Object 



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# File 'lib/fog/openstack/requests/metering/get_statistics.rb', line 6

def get_statistics(meter_id, options={})

  data = {
    'period' => options['period'],
    'q'      => Array.new
  }

  options['q'].each do |opt|
    filter = {}

    ['field', 'op', 'value'].each do |key|
      filter[key] = opt[key] if opt[key]
    end

    data['q'] << filter unless filter.empty?
  end if options['q'].is_a? Array

  request(
    :body     => Fog::JSON.encode(data),
    :expects  => 200,
    :method   => 'GET',
    :path     => "meters/#{meter_id}/statistics"
  )
end

#list_meters(options = []) ⇒ Object 



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# File 'lib/fog/openstack/requests/metering/list_meters.rb', line 6

def list_meters(options=[])

  data = {
    'q' => Array.new
  }

  options.each do |opt|
    filter = {}

    ['field', 'op', 'value'].each do |key|
      filter[key] = opt[key] if opt[key]
    end

    data['q'] << filter unless filter.empty?
  end

  request(
    :body     => Fog::JSON.encode(data),
    :expects  => 200,
    :method   => 'GET',
    :path     => 'meters'
  )
end

#list_resources(options = {}) ⇒ Object 



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# File 'lib/fog/openstack/requests/metering/list_resources.rb', line 6

def list_resources(options = {})
  request(
    :expects  => 200,
    :method   => 'GET',
    :path     => 'resources'
  )
end

#reload ⇒ Object 



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# File 'lib/fog/openstack/metering.rb', line 132

def reload
  @connection.reset
end

#request(params) ⇒ Object 



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# File 'lib/fog/openstack/metering.rb', line 136

def request(params)
  begin
    response = @connection.request(params.merge({
      :headers  => {
        'Content-Type' => 'application/json',
        'Accept' => 'application/json',
        'X-Auth-Token' => @auth_token
      }.merge!(params[:headers] || {}),
      :path     => "#{@path}/v2/#{params[:path]}"#,
      # Causes errors for some requests like tenants?limit=1
      # :query    => ('ignore_awful_caching' << Time.now.to_i.to_s)
    }))
  rescue Excon::Errors::Unauthorized => error
    if error.response.body != 'Bad username or password' # token expiration
      @openstack_must_reauthenticate = true
      authenticate
      retry
    else # bad credentials
      raise error
    end
  rescue Excon::Errors::HTTPStatusError => error
    raise case error
    when Excon::Errors::NotFound
      Fog::Compute::OpenStack::NotFound.slurp(error)
    else
      error
    end
  end
  unless response.body.empty?
    response.body = Fog::JSON.decode(response.body)
  end
  response
end