95 lines
2.1 KiB
Go
95 lines
2.1 KiB
Go
/*
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* Copyright 2019 Banco Bilbao Vizcaya Argentaria, S.A.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package mux
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import (
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"bufio"
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"log"
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"net/http"
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"io"
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"os"
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"github.com/google/uuid"
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"github.com/BBVA/kapow/internal/server/data"
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"github.com/BBVA/kapow/internal/server/model"
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"github.com/BBVA/kapow/internal/server/user/spawn"
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)
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var spawner = spawn.Spawn
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var idGenerator = uuid.NewUUID
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var logHandler io.Writer = os.Stdout
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func handlerBuilder(route model.Route) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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id, err := idGenerator()
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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h := &model.Handler{
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ID: id.String(),
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Route: route,
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Request: r,
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Writer: w,
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}
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data.Handlers.Add(h)
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defer data.Handlers.Remove(h.ID)
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if route.Debug {
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var stdOutR, stdOutW *os.File
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stdOutR, stdOutW, err = os.Pipe()
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defer stdOutW.Close()
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if err != nil {
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log.Println(err)
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return
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}
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var stdErrR, stdErrW *os.File
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stdErrR, stdErrW, err = os.Pipe()
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defer stdErrW.Close()
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if err != nil {
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log.Println(err)
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return
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}
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go logStream(h.ID, "stdout", stdOutR)
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go logStream(h.ID, "stderr", stdErrR)
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err = spawner(h, stdOutW, stdErrW)
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} else {
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err = spawner(h, nil, nil)
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}
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if err != nil {
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log.Println(err)
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}
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})
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}
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func logStream(handlerId string, streamName string, stream *os.File) {
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defer stream.Close()
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execLog := log.New(logHandler, "", log.Ldate|log.Ltime|log.LUTC|log.Lmicroseconds)
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scanner := bufio.NewScanner(stream)
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for scanner.Scan() {
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execLog.Printf("%s %s: %s", handlerId, streamName, scanner.Text())
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}
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}
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