我正在学习在Docker中调试Golang应用程序。我在shell中使用dlv connect
命令已经成功连接。我可以添加断点、继续执行和执行下一步操作...但是在VSCode中却无法做任何事情,只能等待halting
。
我点击主函数左侧的红点,然后点击类似“播放”按钮的绿色按钮。容器中的程序运行了,但无法在主函数上停止。
我是否以错误的方式使用了VSCode?我需要你的帮助。谢谢。
这是我的delve镜像:
#Dockerfile
FROM supinf/go:1.8-builder
RUN apk --no-cache add tini \
&& apk --no-cache add --virtual build-dependencies git \
# Compile delve
&& go get github.com/derekparker/delve/cmd/dlv \
&& cd $GOPATH/src/github.com/derekparker/delve \
&& go install github.com/derekparker/delve/cmd/dlv \
# Clean up
&& apk del --purge -r build-dependencies \
&& rm -rf /go/src/*
ENTRYPOINT ["/sbin/tini", "--"]
CMD ["dlv", "-h"]
docker build -t mydelve .
这是我的 Golang 代码:
package main
import (
"fmt"
"sync"
"time"
)
func dostuff(wg *sync.WaitGroup, i int) {
fmt.Printf("goroutine id %d\n", i)
time.Sleep(60 * time.Second)
fmt.Printf("end goroutine id %d\n", i)
wg.Done()
}
func main() {
var wg sync.WaitGroup
workers := 10
wg.Add(workers)
for i := 0; i < workers; i++ {
go dostuff(&wg, i)
}
wg.Wait()
}
以下是运行容器的命令:
docker run --rm -p 2345:2345
-v $GOPATH/src:/go/src
-w /go/src/test/dlv
--security-opt seccomp=unconfined
mydelve
dlv debug --headless --listen=:2345 --log`
连接容器
dlv connect 127.0.0.1:2345 --wd . --log
操作成功。
使用VSCode
launch.json
{
"version": "0.2.0",
"configurations": [
{
"name": "Remote",
"type": "go",
"request": "launch",
"mode": "remote",
"program": "${fileDirname}",
"port": 2345,
"host": "127.0.0.1",
"env": {},
"args": []
}
]
}
容器中的日志
$ docker run --rm -p 2345:2345 -v $GOPATH/src:/go/src -w /go/src/test/dlv --security-opt seccomp=unconfined mydelve dlv debug --headless --listen=:2345 --log
2017/05/22 09:07:56 server.go:73: Using API v1
2017/05/22 09:07:56 debugger.go:97: launching process with args: [/go/src/test/dlv/debug]
API server listening at: [::]:2345
2017/05/22 09:08:00 debugger.go:505: continuing
goroutine id 3
goroutine id 9
goroutine id 4
goroutine id 5
goroutine id 6
goroutine id 7
goroutine id 8
goroutine id 1
goroutine id 0
goroutine id 2
end goroutine id 6
end goroutine id 3
end goroutine id 9
end goroutine id 4
end goroutine id 5
end goroutine id 8
end goroutine id 7
end goroutine id 1
end goroutine id 0
end goroutine id 2
2017/05/22 09:08:10 debugger.go:496: halting
localhost:<exposed-port>
访问它,不需要指向容器 IP,因为每次启动容器时 IP 都会改变。 - Daniel Andrei Mincă