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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
require 'cqpid'
module Qpid
module Messaging
# Connection allows for establishing connections to a remote endpoint.
class Connection
# The following general options are supported (as strings or symbols):
#
# username::
# password::
# heartbeat::
# tcp_nodelay::
# sasl_mechanism::
# sasl_service::
# sasl_min_ssf::
# sasl_max_ssf::
# transport::
#
# The following options specifically control reconnection behavior:
#
# reconnect:: *true* or *false*; indicates whether to attempt reconnections
# reconnect_timeout:: the number of seconds to attempt reconnecting
# reconnect_limit:: the number of retries before reporting failure
# reconnect_interval_min:: initial delay, in seconds, before attempting a reconnecting
# reconnect_interval_max:: number of seconds to wait before additional reconnect attempts
# reconnect_interval:: shorthand for setting box min and max values
# reconnect_urls:: a list of alternate URLs to use for reconnection attempts
def initialize(url, options = {}, connection_impl = nil)
@url = url
@connection_impl = connection_impl
@options = options
end
def connection_impl # :nodoc:
@connection_impl
end
# Opens the connection.
def open
@connection_impl = Cqpid::Connection.new(@url, convert_options)
@connection_impl.open
end
# Reports whether the connection is open.
def open?; false || (@connection_impl.isOpen if @connection_impl); end
# Closes the connection.
def close; @connection_impl.close if open?; end
# Creates a new session.
#
# If :transactional => true then a transactional session is created.
# Otherwise a standard session is created.
def create_session(args = {})
name = args[:name] || ""
if open?
if args[:transactional]
session = @connection_impl.createTransactionalSession name
else
session = @connection_impl.createSession name
end
return Session.new(session)
else
raise RuntimeError.new "No connection available."
end
end
# Returns a session for the specified session name.
def session name
session_impl = @connection_impl.getSession name
Qpid::Messaging::Session.new session_impl if session_impl
end
# Returns the username used to authenticate with the connection.
def authenticated_username; @connection_impl.getAuthenticatedUsername if open?; end
# inherited from Handle
# Returns whether the underlying handle is valid; i.e., not null.
def valid?
@connection_impl.isValid
end
# Returns whether the underlying handle is null.
def null?
@connection_impl.isNull
end
# Swaps the underlying connection handle.
def swap connection
@connection_impl.swap connection.connection_impl
end
private
def convert_options
result = {}
# map only those options defined in the C++ layer
# TODO when new options are added, this needs to be updated.
unless @options.nil? || @options.empty?
@options.each_pair {|key, value| result[key.to_s] = value.to_s}
end
return result
end
end
end
end
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