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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
89 lines
1.6 KiB
Ruby
89 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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if blk
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@blk = blk
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end
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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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while !done
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done = !accept_connection(server)
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end
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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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if line.include?("\n")
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socket.write get_response(line.strip)
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end
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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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