Class: Provider::CDB

Inherits:
Object
  • Object
show all
Defined in:
lib/depengine/provider/cdb.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#context ⇒ Object

Returns the value of attribute context.



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# File 'lib/depengine/provider/cdb.rb', line 5

def context
  @context
end

#env ⇒ Object

Returns the value of attribute env.



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# File 'lib/depengine/provider/cdb.rb', line 6

def env
  @env
end

#host ⇒ Object

Returns the value of attribute host.



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# File 'lib/depengine/provider/cdb.rb', line 4

def host
  @host
end

#protocol ⇒ Object

Returns the value of attribute protocol.



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# File 'lib/depengine/provider/cdb.rb', line 3

def protocol
  @protocol
end

Instance Method Details

#decrypt(password, transferrable) ⇒ Object 



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# File 'lib/depengine/provider/cdb.rb', line 194

def decrypt(password,transferrable)
  alg           = transferrable.split("}")[0].split("{")[1]
  hex_encrypted = transferrable.split(":")[0].split("}")[1]
  hex_iv        = transferrable.split(":")[1]
  text          = Base64.decode64(hex_encrypted)
  iv            = Base64.decode64(hex_iv)
  c             = OpenSSL::Cipher::Cipher.new(alg)
  c.decrypt

  c.key = Digest::SHA1.hexdigest(password)
  c.iv  = iv
  d     = c.update(text)
  d << c.final

  return d
end

#get_parameter(path, version) ⇒ Object 



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# File 'lib/depengine/provider/cdb.rb', line 8

def get_parameter(path, version)
  result = "@@ERROR@@"
  version = "" if version == 0

  Helper.validates_presence_of host
  Helper.validates_presence_of context
  Helper.validates_presence_of version
  Helper.validates_presence_of env
  Helper.validates_presence_of path

  begin
    url = protocol + '://' + File.join(host, context, \
                                           version.to_s, env, path)
    result = Net::HTTP.get(URI.parse(url))
    if path =~ /.json$/
      begin
        result = JSON.parse( result )
      rescue Exception => e
        $log.writer.error "Error: got invalid json from cdb"
        $log.writer.error "Request was: #{url.to_s}"
        $log.writer.error "Answer was: #{Net::HTTP.get(URI.parse(url))}"
        $log.writer.error e.message
        exit 1
      end
    end

    # decrypt encrypted entries automagically
    password      = ""
    password_file = (File.join(File.dirname($exec_file_path), '../etc/crypt.yaml'))

    if File.file? password_file
      password = YAML::load_file(password_file)['password']
    else
      $log.writer.warn "Can not open etc/crypt.yaml, no decryption possible"
    end

    if result.class.name == "Hash"
      result.each do |key,value|
        if value.class.name != "Fixnum" and \
          ((value =~ /^\{[\w-]+\}.+/ ) != nil)
          result[key] = decrypt(password, value)
        end
     end
    else
      if result.class.name != "Fixnum" and \
          ((result =~ /^\{[\w-]+\}.+/ ) != nil)
        result = decrypt(password, result)
      end
    end

  rescue Exception => e
    $log.writer.error "Error: while connecting to configuration database"
    $log.writer.error "Request was: #{url.to_s}"
    $log.writer.error e.message
    exit 1
  end

  if result == "@@ERROR@@"
    $log.writer.error "Error while talking to configuration database, giving up!"
    $log.writer.error "Request was: #{url.to_s}"
    exit 1
  end

  result
end

#get_parameters(path, version) ⇒ Object 



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# File 'lib/depengine/provider/cdb.rb', line 74

def get_parameters(path, version)
  result  = "@@ERROR@@"
  version = "" if version == 0
  url     = ""


  Helper.validates_presence_of host
  Helper.validates_presence_of context
  Helper.validates_presence_of version
  Helper.validates_presence_of env
  Helper.validates_presence_of path

  begin
    if true
      begin
        cdb_filesystem = Provider::CDB_FILESYSTEM.new
        result = JSON.parse(cdb_filesystem.read_data(path))
        #puts result
      rescue Exception => e
        $log.writer.error "Error: got invalid json from cdb"
        $log.writer.error "Request was: #{path.to_s}"
        $log.writer.error e.message
        exit 1
      end
    else
      url    = protocol + '://' + \
               File.join(host, context, env, path, "showall.json")

      begin
        result = JSON.parse(Net::HTTP.get(URI.parse(url)))
      rescue Exception => e
        $log.writer.error "Error: got invalid json from cdb"
        $log.writer.error "Request was: #{url.to_s}"
        $log.writer.error "Answer was: #{Net::HTTP.get(URI.parse(url))}"
        $log.writer.error e.message
        exit 1
      end
    end

    # decrypt encrypted entries automagically
    password      = ""
    if ENV['USE_DEPENGINE_AS_GEM']
      password_file = \
        ( File.join(File.dirname($exec_file_path), '../../etc/crypt.yaml') )
    else
      password_file = \
        ( File.join(File.dirname($exec_file_path), '../etc/crypt.yaml') )
    end
    if File.file? password_file
      password = YAML::load_file(password_file)['password']
    else
      $log.writer.warn "Can not open etc/crypt.yaml, no decryption possible"
    end

    result.each do |key,value|
      if value.class.name == "Hash"
        value.each do |subkey,subvalue|
          if subvalue.class.name != "Fixnum" and \
              ((subvalue =~ /^\{[\w-]+\}.+/ ) != nil)
            result[key][subkey] = decrypt(password, subvalue)
          end
        end
      else
        if value.class.name != "Fixnum" and
            ((value =~ /^\{[\w-]+\}.+/ ) != nil)
          result[key] = decrypt(password, value)
        end
      end
    end

  rescue Exception => e
    $log.writer.error "Error: while talking to configuration database, giving up!"
    $log.writer.error "Request was: #{url.to_s}"
    $log.writer.error e.message
    exit 1
  end

  if result == "@@ERROR@@"
    $log.writer.error "Error while talking to configuration database, giving up!"
    $log.writer.error "Request was: #{url.to_s}"
    exit 1
  end

  result
end

#set_parameter(path, key, value) ⇒ Object 



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# File 'lib/depengine/provider/cdb.rb', line 160

def set_parameter(path, key, value)
  result = "@@ERROR@@"

  Helper.validates_presence_of host
  Helper.validates_presence_of context
  Helper.validates_presence_of env
  Helper.validates_presence_of path
  Helper.validates_presence_of key
  Helper.validates_presence_of value

  begin
    json   = {key => value.to_s}.to_json
    url    = URI.parse(protocol + '://' + \
             File.join(host, context, env, path))
    header = {'Content-Type' => 'application/x-www-form-urlencoded;charset=utf-8'}
    http   = Net::HTTP.new(url.host, url.port)
    result = http.request_post(url.path, 'json=' + json.to_s, header)
    $log.writer.debug "Writing #{key} with #{value} to cdb"
  rescue Exception => e
    $log.writer.error "Error: while connecting to configuration database"
    $log.writer.error "Request was: #{url.to_s}"
    $log.writer.error e.message
    exit 1
  end

  if result == "@@ERROR@@"
    $log.writer.error "Error while talking to configuration database, giving up!"
    $log.writer.error "Request was: #{url.to_s}"
    exit 1
  end

  result
end