Class: OpenNebulaVNC

Inherits:
Object
  • Object
show all
Defined in:
lib/fog/opennebula/requests/compute/OpenNebulaVNC.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config, logger, options = {}) ⇒ OpenNebulaVNC

Returns a new instance of OpenNebulaVNC.



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# File 'lib/fog/opennebula/requests/compute/OpenNebulaVNC.rb', line 80

def initialize(config, logger, options = {})
    opts={ :json_errors => true,
           :token_folder_name => 'sunstone_vnc_tokens'}.merge(options)

    @pipe = nil
    @token_folder = File.join(VAR_LOCATION, opts[:token_folder_name])
    @proxy_path   = File.join(SHARE_LOCATION, "websockify/websocketproxy.py")
    @proxy_port   = config[:vnc_proxy_port]

    @proxy_ipv6   = config[:vnc_proxy_ipv6]

    @wss = config[:vnc_proxy_support_wss]

    @lock_file = NOVNC_LOCK_FILE

    if (@wss == "yes") || (@wss == "only") || (@wss == true)
        @enable_wss = true
        @cert       = config[:vnc_proxy_cert]
        @key        = config[:vnc_proxy_key]
    else
        @enable_wss = false
    end
    @options = opts
    @logger = logger
end

Instance Attribute Details

#proxy_port ⇒ Object (readonly)

Returns the value of attribute proxy_port.



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# File 'lib/fog/opennebula/requests/compute/OpenNebulaVNC.rb', line 78

def proxy_port
  @proxy_port
end

Instance Method Details

#delete_token(filename) ⇒ Object

Delete proxy token file



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# File 'lib/fog/opennebula/requests/compute/OpenNebulaVNC.rb', line 205

def delete_token(filename)
    begin
        File.delete(File.join(@token_folder, filename))
    rescue => e
        @logger.error "Error deleting token file for VM #{vm_id}"
        @logger.error e.message
    end
end

#proxy(vm_resource) ⇒ Object 



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# File 'lib/fog/opennebula/requests/compute/OpenNebulaVNC.rb', line 158

def proxy(vm_resource)
    # Check configurations and VM attributes
    #if !is_running?
    #    return error(400, "VNC Proxy is not running")
    #end

    if !VNC_STATES.include?(vm_resource['LCM_STATE'])
        return error(400,"Wrong state (#{vm_resource['LCM_STATE']}) to open a VNC session")
    end

    if vm_resource['TEMPLATE/GRAPHICS/TYPE'].nil? ||
       vm_resource['TEMPLATE/GRAPHICS/TYPE'].downcase != "vnc"
        return error(400,"VM has no VNC configured")
    end

    # Proxy data
    host     = vm_resource['HISTORY_RECORDS/HISTORY[last()]/HOSTNAME']
    vnc_port = vm_resource['TEMPLATE/GRAPHICS/PORT']
    vnc_pw = vm_resource['TEMPLATE/GRAPHICS/PASSWD']

    # Generate token random_str: host:port
    random_str = rand(36**20).to_s(36) #random string a-z0-9 length 20
    token = "#{random_str}: #{host}:#{vnc_port}"
    token_file = 'one-'+vm_resource['ID']

    # Create token file
    
	begin
        f = File.open(File.join(@token_folder, token_file), 'w')
        f.write(token)
        f.close
    rescue Exception => e
#            @logger.error e.message
        return error(500, "Cannot create VNC proxy token")
    end

    info   = {
 :proxy_port => "29876",
        :password => vnc_pw,
        :token => random_str,
        :vm_name => vm_resource['NAME']
    }

    return [200, info]
end

#start ⇒ Object 



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# File 'lib/fog/opennebula/requests/compute/OpenNebulaVNC.rb', line 106

def start
    if is_running?
        message="VNC server already running"
        STDERR.puts message
        @logger.info message
        return false
    end

    create_token_dir

    proxy_options = "--target-config=#{@token_folder} "

    if @enable_wss
        proxy_options << " --cert #{@cert}"
        proxy_options << " --key #{@key}" if @key && @key.size > 0
        proxy_options << " --ssl-only" if @wss == "only"
    end

    if @proxy_ipv6
        proxy_options << " -6"
    end

    cmd ="python #{@proxy_path} #{proxy_options} #{@proxy_port}"

    begin
        @logger.info { "Starting VNC proxy: #{cmd}" }
        pid=start_daemon(cmd, VNC_LOG)
    rescue Exception => e
        @logger.error e.message
        return false
    end

    File.open(@lock_file, "w") do |f|
        f.write(pid.to_s)
    end

    sleep 1

    if !is_running?
        message="Error starting VNC proxy"
        STDERR.puts message
        @logger.error message
        File.delete(@lock_file) if File.exist?(@lock_file)

        return false
    end

    STDOUT.puts "VNC proxy started"

    true
end

#status ⇒ Object 



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# File 'lib/fog/opennebula/requests/compute/OpenNebulaVNC.rb', line 248

def status
    if is_running?
        STDOUT.puts "VNC is running"
        true
    else
        STDOUT.puts "VNC is NOT running"
        false
    end
end

#stop(force = false) ⇒ Object 



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# File 'lib/fog/opennebula/requests/compute/OpenNebulaVNC.rb', line 214

def stop(force=false)
    pid=get_pid

    if pid
        @logger.info "Killing VNC proxy"

        signal=(force ? 'KILL' : 'TERM')
        Process.kill(signal ,pid)

        sleep 1

        begin
            Process.getpgid(pid)

            Process.kill('KILL', pid)
        rescue
        end

        if is_running?
            message="VNC server is still running"
            STDERR.puts message
            logger.error message
            return false
        end

        delete_token_dir
    else
        message="VNC server is not running"
        @logger.info message
        STDERR.puts message
    end
    true
end