Class: Chef::Knife::Cloud::FogService

Inherits:
Service
  • Object
show all
Defined in:
lib/chef/knife/cloud/fog/service.rb

Instance Attribute Summary

Attributes inherited from Service

#ui

Instance Method Summary collapse

Methods inherited from Service

#add_custom_attributes, #create_server_dependencies, #delete_server_dependencies, #list_images, #list_resource_allocations, #list_servers

Methods included from Helpers

#locate_config_value, #msg_pair

Constructor Details

#initialize(options = {}) ⇒ FogService

Returns a new instance of FogService.



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# File 'lib/chef/knife/cloud/fog/service.rb', line 15

def initialize(options = {})
  load_fog_gem
  super
end

Instance Method Details

#add_api_endpoint ⇒ Object

Raises:

  • (Chef::Exceptions::Override) 


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# File 'lib/chef/knife/cloud/fog/service.rb', line 151

def add_api_endpoint
  raise Chef::Exceptions::Override, "You must override add_api_endpoint in #{self.to_s} to add endpoint in auth_params for connection"
end

#connection ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 32

def connection
  add_api_endpoint
  @connection ||= begin
    connection  = Fog::Compute.new(@auth_params)
                  rescue Excon::Errors::Unauthorized => e
                    error_message = "Connection failure, please check your username and password."
                    ui.fatal(error_message)
                    raise CloudExceptions::ServiceConnectionError, "#{e.message}. #{error_message}"
                  rescue Excon::Errors::SocketError => e
                    error_message = "Connection failure, please check your authentication URL."
                    ui.fatal(error_message)
                    raise CloudExceptions::ServiceConnectionError, "#{e.message}. #{error_message}"
                  end
end

#create_server(options = {}) ⇒ Object

cloud server specific implementation methods for commands.



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# File 'lib/chef/knife/cloud/fog/service.rb', line 66

def create_server(options = {})
  begin
    add_custom_attributes(options[:server_def])
    server = connection.servers.create(options[:server_def])
  rescue Excon::Errors::BadRequest => e
    response = Chef::JSONCompat.from_json(e.response.body)
    if response['badRequest']['code'] == 400
      message = "Bad request (400): #{response['badRequest']['message']}"
      ui.fatal(message)
    else
      message = "Unknown server error (#{response['badRequest']['code']}): #{response['badRequest']['message']}"
      ui.fatal(message)
    end
    raise CloudExceptions::ServerCreateError, message
  rescue Fog::Errors::Error => e
    raise CloudExceptions::ServerCreateError, e.message
  end

  print "\n#{ui.color("Waiting for server [wait time = #{options[:server_create_timeout]}]", :magenta)}"

  # wait for it to be ready to do stuff
  server.wait_for(Integer(options[:server_create_timeout])) { print "."; ready? }

  puts("\n")
  server
end

#delete_server(server_name) ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 93

def delete_server(server_name)
  begin
    server = get_server(server_name)
    msg_pair("Instance Name", get_server_name(server))
    msg_pair("Instance ID", server.id)

    puts "\n"
    ui.confirm("Do you really want to delete this server")

    # delete the server
    server.destroy
  rescue NoMethodError
    error_message = "Could not locate server '#{server_name}'."
    ui.error(error_message)
    raise CloudExceptions::ServerDeleteError, error_message
  rescue Excon::Errors::BadRequest => e
    handle_excon_exception(CloudExceptions::ServerDeleteError, e)
  end
end

#delete_server_on_failure(server = nil) ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 147

def delete_server_on_failure(server = nil)
  server.destroy if ! server.nil?
end

#get_flavor(name_or_id) ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 171

def get_flavor(name_or_id)
  connection.flavors.find{|f| f.name == name_or_id || f.id == name_or_id }
end

#get_image(name_or_id) ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 167

def get_image(name_or_id)
  connection.images.find{|img| img.name =~ /#{name_or_id}/ || img.id == name_or_id }
end

#get_server(instance_id) ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 159

def get_server(instance_id)
  begin
    server = connection.servers.get(instance_id)
  rescue Excon::Errors::BadRequest => e
    handle_excon_exception(CloudExceptions::KnifeCloudError, e)
  end
end

#get_server_name(server) ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 155

def get_server_name(server)
  server.name
end

#handle_excon_exception(exception_class, e) ⇒ Object

Raises:

  • (exception_class) 


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# File 'lib/chef/knife/cloud/fog/service.rb', line 128

def handle_excon_exception(exception_class, e)
  error_message = if e.response
                    response = Chef::JSONCompat.from_json(e.response.body)
                    "Unknown server error (#{response['badRequest']['code']}): #{response['badRequest']['message']}"
                  else
                    "Unknown server error : #{e.message}"
                  end
  ui.fatal(error_message)
  raise exception_class, error_message
end

#is_image_windows?(image) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/knife/cloud/fog/service.rb', line 192

def is_image_windows?(image)
  image_info = connection.images.get(image)
  !image_info.nil? ? image_info.platform == 'windows' : false
end

#list_resource_configurations ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 139

def list_resource_configurations
  begin
    flavors = connection.flavors.all
  rescue Excon::Errors::BadRequest => e
    handle_excon_exception(CloudExceptions::CloudAPIException, e)
  end
end

#load_fog_gem ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 20

def load_fog_gem
  begin
    # Load specific version of fog. Any other classes/modules using fog are loaded after this.
    gem "fog", Chef::Config[:knife][:cloud_fog_version]
    require 'fog'
    Chef::Log.debug("Using fog version: #{Gem.loaded_specs["fog"].version}")
  rescue Exception => e
    Chef::Log.error "Error loading fog gem."
    exit 1
  end
end

#network ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 47

def network
  @network ||= begin
    network = Fog::Network.new(@auth_params)
              rescue Excon::Errors::Unauthorized => e
                error_message = "Connection failure, please check your username and password."
                ui.fatal(error_message)
                raise CloudExceptions::ServiceConnectionError, "#{e.message}. #{error_message}"
              rescue Excon::Errors::SocketError => e
                error_message = "Connection failure, please check your authentication URL."
                ui.fatal(error_message)
                raise CloudExceptions::ServiceConnectionError, "#{e.message}. #{error_message}"
              rescue Fog::Errors::NotFound => e
                error_message = "No Network service found. This command is unavailable with current cloud."
                ui.fatal(error_message)
                raise CloudExceptions::NetworkNotFoundError, "#{e.message}. #{error_message}"
              end
end

#server_summary(server, columns_with_info = []) ⇒ Object 



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# File 'lib/chef/knife/cloud/fog/service.rb', line 175

def server_summary(server, columns_with_info = [])
  # columns_with_info is array of hash with label, key and attribute extraction callback, ex [{:label => "Label text", :key => 'key', value => 'the_actual_value', value_callback => callback_method to extract/format the required value}, ...]
  list = []
  columns_with_info.each do |col_info|
    value = if col_info[:value].nil?
              (col_info[:value_callback].nil? ? server.send(col_info[:key]).to_s : col_info[:value_callback].call(server.send(col_info[:key])))
            else
              col_info[:value]
            end
    if !(value.nil? || value.empty?)
      list << ui.color(col_info[:label], :bold)
      list << value
    end
  end
  puts ui.list(list, :uneven_columns_across, 2) if columns_with_info.length > 0
end