Remote debugging - Unverified breakpoint

问题:

Hope I can explain this right.

Update: I can confirm that dlv debug -l 127.0.0.1:2345 does work. Therefore I must be in VsCode launch.json

Update: removed the panic. There was a different in go versions. Now the debugger in VsCode is just not working, it says "Unverified breakpoint". But it works fine if I use dlv from terminal, if I am in the folder with the code.

I am trying to remote debug with this sample code.

It works with this change.

Do you know what to do? I have tried to change the launch.json to "program": "${workspaceRoot}", to include the path like "program": "${workspaceRoot}/src/app",.

Launch.json

{     "version": "0.2.0",     "configurations": [         {             "name": "Launch",             "type": "go",             "request": "launch",             "mode": "debug",             "program": "${workspaceRoot}",             "env": {},             "args": []         },         {             // To remote debug in Docker, run the following before debugging:             // # docker build -t webapp-go .             // # docker run -d --name webapp-go --privileged -p 8080:8080 -p 2345:2345 webapp-go             // # docker run -d --name webapp-go --privileged -p 8080:8080 -p 2345:2345 -v "${PWD%/*}/src/app/":/go/src/app webapp-go             // And then each time you want to restart debugging:             // # docker restart             "name": "Remote debug in Docker",             "type": "go",             "request": "launch",             "mode": "remote",             "program": "${workspaceRoot}",             "env": {},             "args": [],             "remotePath": "/go/src/app",             "port": 2345, // Port              "host": "127.0.0.1" // Docker IP /*            "preLaunchTask": "docker" */          }     ] } 

Dockerfile:

FROM golang:1.6 RUN go get -u -v github.com/derekparker/delve/cmd/dlv EXPOSE 2345  # RUN mkdir -p /go/src/app # WORKDIR /go/src/app # VOLUME ["src/app2"]  VOLUME ["/go/src/app"] RUN mkdir -p /go/src/app WORKDIR /go/src/app COPY src/app /go/src/app  RUN go-wrapper download RUN go-wrapper install  EXPOSE 8080 CMD ["dlv", "debug", "--headless", "--listen=:2345", "--log"] 

回答1:

I managed to get delve and vscode with go working for me by using docker-compose.

I use my Dockerfile to build the app as you do and just override some container attributes in my docker-compose.yml.

Here's how my docker-compose.yml looks :

version: '2' services:   my_app:     build: .     security_opt:       - seccomp:unconfined     entrypoint: dlv debug github.com/my_user/my_app -l 0.0.0.0:2345 --headless=true --log=true -- server     volumes:       - .:/opt/go/src/github.com/my_user/my_app     ports:       - "2345:2345"     expose:       - "2345" 

And the launch.json file :

{     "version": "0.2.0",     "configurations": [         {             "name": "Remote Docker",             "type": "go",             "request": "launch",             "mode": "remote",             "remotePath": "/opt/go/src/github.com/my_user/my_app",             "port": 2345,             "host": "192.168.99.100",             "program": "${workspaceRoot}",             "env": {},             "args": []         }     ] } 

Note that since I'm on OS X the IP is what my docker-machine ip default prints. You can change it to 127.0.0.1 if this is what your docker-machine ip outputs.

On docker-compose up, my_app prints :

my_app_1 | 2016/12/14 12:41:32 server.go:71: Using API v1

my_app_1 | 2016/12/14 12:41:32 debugger.go:65: launching process with args: [/opt/go/src/github.com/my_user/my_app/debug server]

my_app_1 | API server listening at: [::]:2345

And after setting up some breakpoints and attaching the debugger it works.

Hope this helps!

文章来源: Remote debugging - Unverified breakpoint