Module: CloudClient

Defined in:
lib/cloud/CloudClient.rb

Overview

The CloudClient module contains general functionality to implement a Cloud Client

Defined Under Namespace

Classes: Error

Constant Summary collapse

VERSION =

OpenNebula version

'6.10.2'
DEFAULT_AUTH_FILE = 
"/var/lib/one/.one/one_auth"

Class Method Summary collapse

Class Method Details

.get_one_auth ⇒ Object

######################################################################### Gets authorization credentials from ONE_AUTH or default auth file.

Raises an error if authorization is not found #########################################################################



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# File 'lib/cloud/CloudClient.rb', line 73

def self.get_one_auth
    if ENV["ONE_AUTH"] and !ENV["ONE_AUTH"].empty? and
        File.file?(ENV["ONE_AUTH"])
        one_auth=File.read(ENV["ONE_AUTH"]).strip.split(':')
    elsif File.file?(DEFAULT_AUTH_FILE)
        one_auth=File.read(DEFAULT_AUTH_FILE).strip.split(':')
    else
        raise "No authorization data present"
    end

    raise "Authorization data malformed" if one_auth.length < 2

    one_auth
end

.http_start(url, timeout, &block) ⇒ Object

######################################################################### Starts an http connection and calls the block provided. SSL flag is set if needed. #########################################################################



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# File 'lib/cloud/CloudClient.rb', line 92

def self.http_start(url, timeout, &block)
    host = nil
    port = nil

    if ENV['http_proxy']
        uri_proxy  = URI.parse(ENV['http_proxy'])
        flag = false

        # Check if we need to bypass the proxy
        if ENV['no_proxy']
            ENV['no_proxy'].split(',').each do |item|
                item = item.rstrip.lstrip

                unless (IPAddress(url.host) rescue nil).nil?
                    unless (IPAddress(item) rescue nil).nil?
                        flag |= IPAddress(item).include? IPAddress(url.host)
                    end
                else
                    if (IPAddress(item) rescue nil).nil?
                        flag |= (item == url.host)
                    end
                end
            end
        end

        unless flag
            host = uri_proxy.host
            port = uri_proxy.port
        end
    end

    http = Net::HTTP::Proxy(host, port).new(url.host, url.port)

    if timeout
        http.read_timeout = timeout.to_i
    end

    if url.scheme=='https'
        http.use_ssl = true
        http.verify_mode=OpenSSL::SSL::VERIFY_NONE
    end

    begin
        res = http.start do |connection|
            block.call(connection)
        end
    rescue Errno::ECONNREFUSED => e
        str =  "Error connecting to server (#{e.to_s}).\n"
        str << "Server: #{url.host}:#{url.port}"

        return CloudClient::Error.new(str,"503")
    rescue Errno::ETIMEDOUT => e
        str =  "Error timeout connecting to server (#{e.to_s}).\n"
        str << "Server: #{url.host}:#{url.port}"

        return CloudClient::Error.new(str,"504")
    rescue Timeout::Error => e
        str =  "Error timeout while connected to server (#{e.to_s}).\n"
        str << "Server: #{url.host}:#{url.port}"

        return CloudClient::Error.new(str,"504")
    rescue SocketError => e
        str =  "Error timeout while connected to server (#{e.to_s}).\n"

        return CloudClient::Error.new(str,"503")
    rescue
        return CloudClient::Error.new($!.to_s,"503")
    end

    if res.is_a?(Net::HTTPSuccess)
        res
    else
        CloudClient::Error.new(res.body, res.code)
    end
end

.is_error?(value) ⇒ Boolean

######################################################################### Returns true if the object returned by a method of the OpenNebula library is an Error #########################################################################

Returns:

  • (Boolean) 


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# File 'lib/cloud/CloudClient.rb', line 191

def self.is_error?(value)
    value.class==CloudClient::Error
end