Refactor named pipe handling

github-fast-env.rb

@@ -98,26 +98,31 @@ while true
 
 	if command == "ready"
 		break
-	end
+	elsif command == "named-pipes"
+		if arguments.empty?
+			log "error", "malformed response"
+			exit 1
+		end
 
-	if not ["stdin", "stdout", "stderr"].include?(command) or arguments.empty?
+		pipe_base_path = Base64.decode64(arguments[0])
+
+		log "info", "connecting to named pipes at #{pipe_base_path}"
+
+		pipes["stdin"] = File::open("#{pipe_base_path}.stdin", "w")
+		pipes["stdin"].sync = true
+		pipes["stdout"] = File::open("#{pipe_base_path}.stdout", "r")
+		pipes["stdout"].sync = true
+		pipes["stderr"] = File::open("#{pipe_base_path}.stderr", "r")
+		pipes["stderr"].sync = true
+
+		log "info", "connected via named pipes"
+	elsif command == "pseudoterminal"
+		log "error", "not yet implemented"
+		exit 1
+	else
 		log "error", "malformed response"
 		exit 1
 	end
-
-	pipe_path = arguments[0]
-
-	log "info", "connecting to #{pipe_path}"
-
-	if command == "stdin"
-		pipes[command] = File::open(pipe_path, "w")
-	else
-		pipes[command] = File::open(pipe_path, "r")
-	end
-
-	pipes[command].sync = true
-
-	log "info", "connected"
 end
 
 log "info", "ready"

github-fast-envd.rb

@@ -39,16 +39,14 @@ $stderr.puts "serving control socket"
 
 connection_id = 0
 
-def open_pipe(connection_id, name)
+def open_pipe(path)
-	pipe_path = "/tmp/github-fast-envd.#{connection_id}.#{name}"
+	if File.exist?(path) and File.pipe?(path)
-
+		File.unlink(path)
-	if File.exist?(pipe_path) and File.pipe?(pipe_path)
-		File.unlink(pipe_path)
 	end
 
-	File.mkfifo(pipe_path, mode = 0600)
+	File.mkfifo(path, mode = 0600)
 
-	pipe_path
+	path
 end
 
 def read_command(control_socket)
@@ -86,18 +84,19 @@ def read_command(control_socket)
 end
 
 def set_up_named_pipes(control_socket, connection_id)
-	stdin = open_pipe(connection_id, "stdin")
+	pipe_base_path = "/tmp/github-fast-envd.#{connection_id}"
-	control_socket.puts "stdin #{stdin}"
+	pipe_base_path_encoded = Base64.encode64(pipe_base_path).delete("\n")
+
+	stdin = open_pipe("#{pipe_base_path}.stdin")
+	stdout = open_pipe("#{pipe_base_path}.stdout")
+	stderr = open_pipe("#{pipe_base_path}.stderr")
+
+	control_socket.puts "named-pipes #{pipe_base_path_encoded}"
+
 	stdin = File::open(stdin, "r")
 	stdin.sync = true
-
-	stdout = open_pipe(connection_id, "stdout")
-	control_socket.puts "stdout #{stdout}"
 	stdout = File::open(stdout, "w")
 	stdout.sync = true
-
-	stderr = open_pipe(connection_id, "stderr")
-	control_socket.puts "stderr #{stderr}"
 	stderr = File::open(stderr, "w")
 	stderr.sync = true