Class: AutomateEm::Device::Base
Overview
This is how sending works Send receives data, turns a mutex on and sends the data – It goes into the receive mutex critical section and sleeps waiting for a response – a timeout is used as a backup in case no response is received The receive function does the following – If the send lock is not active it processes the received data – otherwise it notifies the send function that data is avaliable
Instance Method Summary
collapse
#add_to_queue, #call_connected, #config=, #default_send_options=, #do_process_response, #do_receive_data, #do_send_command, #initialize, #logger, #process_next_send, #process_response, #process_response_complete, #process_result, #process_send, #received_lock, #sending_timeout, #shutdown
Methods included from Utilities
array_to_str, byte_to_hex, hex_to_byte, schedule, str_to_array, task
Instance Method Details
#connection_completed ⇒ Object
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# File 'lib/automate-em/device/tcp_control.rb', line 42
def connection_completed
resume if paused?
@connect_retry = @connect_retry || Atomic.new(0)
EM.defer do
@connect_retry.value = 0
end
if !@tls_enabled
@connected = true
@connecting = false
call_connected
else
if !@parent.respond_to?(:certificates)
start_tls
else
begin
certs = @parent.certificates
start_tls(certs)
rescue => e
EM.defer do
AutomateEm.print_error(logger, e, {
:message => "module #{@parent.class} error whilst starting TLS with certificates",
:level => Logger::ERROR
})
end
end
end
end
@make_occured = true
end
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#do_connect ⇒ Object
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# File 'lib/automate-em/device/tcp_control.rb', line 129
def do_connect
if @disconnecting
EM.next_tick do
do_connect
end
return
end
return if @connected
makebreak = @make_break
@connecting = true
EM.defer do
if !@shutting_down.value
begin
settings = DeviceModule.lookup(@parent)
@connect_retry.update { |v| v += 1}
if @connect_retry.value == 1 || makebreak
res = ResolverJob.new(settings.ip)
res.callback {|ip|
reconnect ip, settings.port
}
res.errback {|error|
EM.defer do
logger.info "module #{@parent.class} in tcp_control.rb, unbind"
logger.info "Reconnect failed for #{settings.ip}:#{settings.port} - #{error.inspect}"
end
@connect_retry.value = 2
do_reconnect(settings) unless makebreak
}
else
if @connect_retry.value == 2
logger.info "module #{@parent.class} in tcp_control.rb, unbind"
logger.info "Reconnect failed for #{settings.ip}:#{settings.port}"
end
do_reconnect(settings)
end
rescue
AutomateEm.print_error(logger, e, {
:message => "module #{@parent.class} in tcp_control.rb, unbind\nFailed to lookup settings. Device probably going offline.",
:level => Logger::FATAL
})
end
end
end
end
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#do_reconnect(settings) ⇒ Object
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# File 'lib/automate-em/device/tcp_control.rb', line 183
def do_reconnect(settings)
EM::Timer.new(5) do
if !@shutting_down.value
res = ResolverJob.new(settings.ip)
res.callback {|ip|
reconnect ip, settings.port
}
res.errback {|error|
do_reconnect(settings)
}
end
end
end
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#do_send_data(data) ⇒ Object
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# File 'lib/automate-em/device/tcp_control.rb', line 201
def do_send_data(data)
send_data(data)
end
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#receive_data(data) ⇒ Object
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# File 'lib/automate-em/device/tcp_control.rb', line 197
def receive_data(data)
do_receive_data(data)
end
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#ssl_handshake_completed ⇒ Object
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# File 'lib/automate-em/device/tcp_control.rb', line 76
def ssl_handshake_completed
@connected = true
@connecting = false
call_connected(get_peer_cert) end
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#unbind ⇒ Object
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# File 'lib/automate-em/device/tcp_control.rb', line 83
def unbind
@connected = false @connecting = false
@disconnecting = false
if @config[:flush_buffer_on_disconnect]
process_response(@buf.flush, nil) unless @buf.nil?
else
@buf.flush unless @buf.nil? end
@connect_retry = @connect_retry || Atomic.new(0)
if @config[:clear_queue_on_disconnect] || (@make_break && !@make_occured)
@send_queue.clear
end
@make_occured = false
EM.defer do
if !@shutting_down.value
@task_queue.push lambda {
@parent[:connected] = false
return unless @parent.respond_to?(:disconnected)
begin
@parent.disconnected
rescue => e
AutomateEm.print_error(logger, e, {
:message => "module #{@parent.class} error whilst calling: disconnected",
:level => Logger::ERROR
})
end
}
end
end
if !@make_break
do_connect
elsif @send_queue.size() > 0
do_connect
end
end
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