Restructure installation paths
This commit is contained in:
2
github-fast-env/bin/github-fast-env
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2
github-fast-env/bin/github-fast-env
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#/usr/bin/env bash
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/usr/lib/github-fast-env/github-fast-env.rb "$@"
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275
github-fast-env/bin/github-fast-envd
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275
github-fast-env/bin/github-fast-envd
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#!/usr/bin/env ruby
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require "base64"
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require "io/console"
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require "socket"
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class ClientError < StandardError
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def initialize(message)
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super(message)
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end
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end
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class ClientScriptError < StandardError
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def initialize(source)
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super(source.message)
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@source = source
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end
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def source
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@source
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end
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end
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$original_stdin = $stdin.dup
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$original_stdout = $stdout.dup
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$original_stderr = $stderr.dup
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$runtime_directory = "/run/github-fast-env"
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control_socket_path = "#{$runtime_directory}/github-fast-envd.sock"
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if File.exist?(control_socket_path) and File.socket?(control_socket_path)
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File.unlink(control_socket_path)
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end
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$original_stderr.puts "creating control socket"
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control_server = UNIXServer.new(control_socket_path)
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File.chmod 0700, control_socket_path
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connection_id = 0
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def open_pipe(path)
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if File.exist?(path) and File.pipe?(path)
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File.unlink(path)
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end
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File.mkfifo(path, mode = 0600)
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path
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end
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def read_command(control_socket)
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ready_ios = IO.select([control_socket], [], [], 10)
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if not ready_ios
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log "error", "timeout while communicating with github-fast-envd"
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exit 1
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end
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response = control_socket.readline.strip.split(" ", 2)
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if response.empty?
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log "error", "malformed response from github-fast-envd"
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exit 1
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end
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command = response[0]
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if command == "error"
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if response.length < 2
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log "error", "malformed error response from github-fast-envd"
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exit 1
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end
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error_message = response[1]
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log "error", "#{error_message}"
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exit 1
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end
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arguments = response[1].nil? ? [] : response[1].split(" ")
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return command, arguments
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end
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def set_up_named_pipes(control_socket, connection_id)
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pipe_base_path = "/#{$runtime_directory}/github-fast-envd.#{connection_id}"
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pipe_base_path_encoded = Base64.encode64(pipe_base_path).delete("\n")
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stdin = open_pipe("#{pipe_base_path}.stdin")
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stdout = open_pipe("#{pipe_base_path}.stdout")
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stderr = open_pipe("#{pipe_base_path}.stderr")
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# TODO: support script arguments
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control_socket.puts "named-pipes #{pipe_base_path_encoded}"
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stdin = File.open(stdin, "r")
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stdin.sync = true
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stdout = File.open(stdout, "w")
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stdout.sync = true
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stderr = File.open(stderr, "w")
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stderr.sync = true
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$original_stderr.puts " set up named pipes"
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control_socket.puts "ready"
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response = control_socket.readline.strip
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if response != "ready"
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raise ClientError.new "invalid command"
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Kernel.exit!
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end
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$stdin.reopen(stdin)
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$stdout.reopen(stdout)
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$stderr.reopen(stderr)
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end
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def clean_up_named_pipes(control_socket, connection_id)
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pipe_base_path = "/#{$runtime_directory}/github-fast-envd.#{connection_id}"
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if File.exist?("#{pipe_base_path}.stdin")
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File.delete("#{pipe_base_path}.stdin")
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end
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if File.exist?("#{pipe_base_path}.stdout")
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File.delete("#{pipe_base_path}.stdout")
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end
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if File.exist?("#{pipe_base_path}.stderr")
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File.delete("#{pipe_base_path}.stderr")
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end
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end
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def set_up_pseudoterminal(control_socket, pseudoterminal_path)
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pseudoterminal_io = File.open(pseudoterminal_path, File::RDWR | File::NOCTTY)
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$original_stderr.puts " connecting to pseudoterminal #{pseudoterminal_path}"
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$stdin.reopen(pseudoterminal_io)
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$stdout.reopen(pseudoterminal_io)
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$stderr.reopen(pseudoterminal_io)
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$original_stderr.puts " connected to pseudoterminal #{pseudoterminal_path}"
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control_socket.puts "ready"
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end
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$original_stderr.puts "preloading common modules"
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load "/usr/lib/github-fast-env/preload.rb"
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$original_stderr.puts "ready to serve requests"
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while true
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control_socket = control_server.accept
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$original_stderr.puts "- new connection"
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begin
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command, arguments = read_command(control_socket)
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if command != "new"
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raise ClientError.new "unexpected command"
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end
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if arguments.empty?
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raise ClientError.new "malformed command"
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end
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protocol_version = arguments[0]
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if protocol_version != "v1"
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raise ClientError.new "unsupported protocol version (#{protocol_version})"
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end
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mode = arguments[1]
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if mode == "named-pipes"
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if arguments.length < 3
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raise ClientError.new "malformed command"
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end
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elsif mode == "pseudoterminal"
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if arguments.length < 4
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raise ClientError.new "malformed command"
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end
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pseudoterminal_path = Base64.decode64(arguments[2])
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else
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raise ClientError.new "unknown mode (#{mode})"
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end
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script_path = Base64.decode64(arguments.last)
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connection_id += 1
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child_process = fork {
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process_id = Process.pid
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control_socket.puts "pid #{process_id}"
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exit_code = "unknown"
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if mode == "named-pipes"
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set_up_named_pipes(control_socket, connection_id)
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else
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set_up_pseudoterminal(control_socket, pseudoterminal_path)
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end
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$original_stderr.puts " executing script #{script_path} (#{process_id})"
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begin
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begin
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load script_path, true
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rescue SystemExit => error
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$original_stderr.puts " exit code: #{error.status}"
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exit_code = error.status
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rescue StandardError => error
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$stdin = $original_stdin
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$stdout = $original_stdout
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$stderr = $original_stderr
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raise ClientScriptError.new error
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end
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rescue ClientScriptError => error
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encoded_error_output = Base64.encode64(error.source.full_message).delete("\n")
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$original_stderr.puts " error executing script, ignoring request"
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begin
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control_socket.puts "script_error #{encoded_error_output}"
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rescue
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end
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rescue ClientError => error
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$original_stderr.puts " error communicating with client, ignoring request (#{error})"
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begin
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control_socket.puts "error #{error}"
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rescue
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end
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rescue StandardError => error
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$original_stderr.puts " error, ignoring request (#{error})"
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begin
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control_socket.puts "error internal server error"
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rescue
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end
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end
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begin
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control_socket.puts "done #{exit_code}"
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rescue
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end
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control_socket.close
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if mode == "named-pipes"
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clean_up_named_pipes(control_socket, connection_id)
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end
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$original_stderr.puts " finished handling request (#{process_id})"
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Kernel.exit!
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}
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Process.detach(child_process)
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rescue ClientError => error
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$original_stderr.puts " error communicating with client, ignoring request (#{error})"
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begin
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control_socket.puts "error #{error}"
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rescue
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end
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rescue StandardError => error
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$original_stderr.puts " error, ignoring request (#{error})"
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begin
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control_socket.puts "error internal server error"
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rescue
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end
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end
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control_socket.close
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end
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