goland 远程调试go

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安装 Delve

有两种安装 Delve 的方式:

Go: Install/Update Toolsdlv

查看命令面板

调试器配置说明

调试器会使用要以下这些配置, 在通常情况下, 你不需要更改或者修改他们中的任何一项, 但是需要看一看。

go.gopathgo.inferGopathgo.delveConfigmaxStringLenmaxArrayValuesmaxStructFields-1maxVariableRecurseapiVersiondlvLoadConfig

delve

• 在调试视图中检查变量时，可能需要更改字符串和数组的长度, 默认上限更改为 64。

• 在调试视图中检查嵌套变量时，请按照实际情况进行配置。

launch.json

Debug: Open launch.jsonlaunch.json

{"version": "0.2.0","configurations": [{"name": "Launch","type": "go","request": "launch","mode": "auto","program": "${fileDirname}","env": {},"args": []}]}

launch.json

golaunchattachattachlaunchlaunchautodebugremotetestexecattachlocalremote{ "ENVNAME": "ENVVALUE" }envenvFiletruedebuggergdbwirelldboutdebuglineerrrpcshowLogtruemoderemote

在调试过程中使用 VS Code 变量

${workspaceFolder} ${file}${fileDirname}

使用 build tags

go build -tags=whatever_tagbuildFlags"-tags=whatever_tag""-tags='first_tag second_tag third_tag'"

常用的 launch.json 配置示例

launch.json

调试当前文件的配置样本

{
    "name": "Launch file",
    "type": "go",
    "request": "launch",
    "mode": "auto",
    "program": "${file}"
}

调试单个测试用例配置样本

{
    "name": "Launch test function",
    "type": "go",
    "request": "launch",
    "mode": "test",
    "program": "${workspaceFolder}",
    "args": [
        "-test.run",
        "MyTestFunction"
    ]
}

调试包内所有测试用例配置样本

{
    "name": "Launch test package",
    "type": "go",
    "request": "launch",
    "mode": "test",
    "program": "${workspaceFolder}"
}

调试预构建二进制配置样本

{
    "name": "Launch executable",
    "type": "go",
    "request": "launch",
    "mode": "exec",
    "program": "absolute-path-to-the-executable"
}

调试本地已运行进程配置样本

{
    "name": "Attach to local process",
    "type": "go",
    "request": "attach",
    "mode": "local",
    "processId": 0
}

远程调试

要使用 VS Code 进行远程调试, 那么需要在远程服务器上运行 headless delve 服务。下面这个示例假定了 你要调试的程序与你在同一目录下, 如果没有, 请参考 dlv debug 命令上的用法文档。

# 在远程服务器上启动 delve 服务
$ dlv debug --headless --listen=:2345 --log --api-version=2

Delve

$ dlv debug --headless --listen=:2345 --log -- -myArg=123

launch.json

{"name": "Launch remote", "type": "go","request": "launch","mode": "remote","remotePath": "absolute-path-to-the-file-being-debugged-on-the-remote-machine","host": "127.0.0.1", # 目标服务器地址"port": 2345, # 目标端口"program": "absolute-path-to-the-file-on-the-local-machine","env": {}}

remotePathprogramremotePath

Launch remotedlv

在 Docker 中调试参考:https://github.com/lukehoban/webapp-go/tree/debugg...

一步一步调试

Troubleshooting

Go: Install/Update ToolsdlvOK

启动调试日志

showLogtruetraceloglogOutputrpclogOutputdelve--log-output

相关资料

1. 一步一步 debug:  https://code.visualstudio.com/docs/editor/debuggin...

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