152 lines
3.5 KiB
Go
152 lines
3.5 KiB
Go
// Copyright 2018 Google Inc. All rights reserved.
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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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package status
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import (
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"bufio"
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"fmt"
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"io"
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"os"
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"syscall"
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"github.com/golang/protobuf/proto"
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"android/soong/ui/logger"
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"android/soong/ui/status/ninja_frontend"
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)
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// NinjaReader reads the protobuf frontend format from ninja and translates it
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// into calls on the ToolStatus API.
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func NinjaReader(ctx logger.Logger, status ToolStatus, fifo string) {
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os.Remove(fifo)
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err := syscall.Mkfifo(fifo, 0666)
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if err != nil {
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ctx.Fatalf("Failed to mkfifo(%q): %v", fifo, err)
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}
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go ninjaReader(status, fifo)
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}
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func ninjaReader(status ToolStatus, fifo string) {
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f, err := os.Open(fifo)
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if err != nil {
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status.Error(fmt.Sprintf("Failed to open fifo: %v", err))
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}
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defer f.Close()
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r := bufio.NewReader(f)
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running := map[uint32]*Action{}
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for {
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size, err := readVarInt(r)
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if err != nil {
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if err != io.EOF {
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status.Error(fmt.Sprintf("Got error reading from ninja: %s", err))
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}
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return
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}
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buf := make([]byte, size)
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_, err = io.ReadFull(r, buf)
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if err != nil {
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if err == io.EOF {
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status.Print(fmt.Sprintf("Missing message of size %d from ninja\n", size))
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} else {
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status.Error(fmt.Sprintf("Got error reading from ninja: %s", err))
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}
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return
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}
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msg := &ninja_frontend.Status{}
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err = proto.Unmarshal(buf, msg)
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if err != nil {
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status.Print(fmt.Sprintf("Error reading message from ninja: %v", err))
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continue
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}
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// Ignore msg.BuildStarted
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if msg.TotalEdges != nil {
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status.SetTotalActions(int(msg.TotalEdges.GetTotalEdges()))
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}
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if msg.EdgeStarted != nil {
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action := &Action{
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Description: msg.EdgeStarted.GetDesc(),
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Outputs: msg.EdgeStarted.Outputs,
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Command: msg.EdgeStarted.GetCommand(),
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}
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status.StartAction(action)
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running[msg.EdgeStarted.GetId()] = action
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}
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if msg.EdgeFinished != nil {
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if started, ok := running[msg.EdgeFinished.GetId()]; ok {
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delete(running, msg.EdgeFinished.GetId())
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var err error
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exitCode := int(msg.EdgeFinished.GetStatus())
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if exitCode != 0 {
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err = fmt.Errorf("exited with code: %d", exitCode)
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}
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status.FinishAction(ActionResult{
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Action: started,
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Output: msg.EdgeFinished.GetOutput(),
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Error: err,
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})
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}
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}
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if msg.Message != nil {
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message := "ninja: " + msg.Message.GetMessage()
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switch msg.Message.GetLevel() {
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case ninja_frontend.Status_Message_INFO:
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status.Status(message)
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case ninja_frontend.Status_Message_WARNING:
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status.Print("warning: " + message)
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case ninja_frontend.Status_Message_ERROR:
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status.Error(message)
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default:
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status.Print(message)
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}
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}
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if msg.BuildFinished != nil {
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status.Finish()
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}
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}
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}
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func readVarInt(r *bufio.Reader) (int, error) {
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ret := 0
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shift := uint(0)
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for {
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b, err := r.ReadByte()
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if err != nil {
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return 0, err
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}
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ret += int(b&0x7f) << (shift * 7)
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if b&0x80 == 0 {
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break
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}
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shift += 1
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if shift > 4 {
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return 0, fmt.Errorf("Expected varint32 length-delimited message")
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}
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}
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return ret, nil
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}
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