81 lines
1.6 KiB
Ruby
81 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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require "socket"
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class SocketServer
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def initialize(socket_path)
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@socket_path = socket_path
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@server = nil
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end
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def start(&blk)
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@server = UNIXServer.new(@socket_path)
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@accept_thread = new_accept_thread
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@blk = blk if blk
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end
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def stop
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@server&.close
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FileUtils.rm_f(@socket_path)
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@server = nil
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@blk = nil
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end
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protected
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def new_accept_thread
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server = @server
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Thread.new do
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begin
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done = false
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done = !accept_connection(server) while !done
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ensure
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self.stop
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Rails.logger.info("Cleaned up socket server at #{@socket_path}")
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end
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end
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end
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def accept_connection(server)
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socket = nil
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begin
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socket = server.accept
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rescue IOError, Errno::EPIPE
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# socket was shut down or something catastrophic like that happened
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return false
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end
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start = Time.now
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line = +""
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while Time.now - start < 10
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if IO.select([socket], nil, nil, 10)
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begin
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line << socket.read_nonblock(1000)
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rescue IO::WaitReadable
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sleep 0.001
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end
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end
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break if line.include?("\n")
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end
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socket.write get_response(line.strip) if line.include?("\n")
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true
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rescue IOError, Errno::EPIPE
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# nothing to do here, case its normal on shutdown
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rescue => e
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Rails.logger.warn("Failed to handle connection #{e}:\n#{e.backtrace.join("\n")}")
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ensure
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socket&.close
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end
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def get_response(command)
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if @blk
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@blk.call(command)
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else
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raise "Must be implemented by child"
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end
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end
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end
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