Debugging Golang Engineering with visual Studio code

This is a creation in Article, where the information may have evolved or changed.

Key words

• The simplest debugging strategy
• Multi-project commissioning for personal development and project development
• No need to modify system environment variables

Prepare Vscode

Download the latest version of Vscode on the website:

Visual Studio Code-code Editing. redefined**

Installing the Golang Plugin

• Open the expansion panel

  vscode-> View, extension

• Find the Go plugin in the search box, enter go, find the second line that has Rich Go language support for Visual Studio code plug-ins, click Install

  Note not the highest ranked

• Restart Editor

Configure Startup Items

• Open the Debug panel

  Vscode-> View-Debug

• Add a debug target

  In the "No Debug" drop-down box, click "Add Configuration ..."

• To add a target debug configuration

  Example:

  {    "version": "0.2.0",    "configurations": [        {            "name": "Launch",            "type": "go",            "request": "launch",            "mode": "debug",            "remotePath": "",            "port": 2345,            "host": "127.0.0.1",            "program": "${fileDirname}",            "env": {                "GOPATH":"D:/Develop/vscodegolang"            },            "args": [],            "showLog": true        }    ]}

Where: "Port", "host" are automatically generated by the Go plugin

"ENV" for setting environment variables, set as your project directory can (contains bin, src folder)

Preparing to debug plugins

At this time find Main.go press F5, will error tip:

Failded to continue:"Cannot find Delve debugger. Install from https://github.com/derekparker/delve & ensure it is in your "GOPATH/bin" or "PATH"

We use the GO command line to compile the debugger

go get github.com/derekparker/delve/cmd/dlv

Place the DLV debugger in the bin directory of the Gopath (project directory)

Start debugging

Select the main.go you want to debug, and click F5 to start Debugging

Debugging shortcut keys is consistent with Visual Studio system

• F9 Toggle Breakpoint
• F10 Step Over
• F11 Step in
• Shift+f11 Step out

Watch out.

• When some struct members cannot be displayed directly, the variable name can be directly selected, added to the watch, or right-clicked: "Debug: Evaluate"

Multi-Project Commissioning

Multiple sets of debug portals can be added to the Launch.json, and the corresponding configuration is selected in the debug panel to enable debugging of different targets

{    "version": "0.2.0",    "configurations": [        {            "name": "client",            "type": "go",            "request": "launch",            "mode": "debug",            "remotePath": "",            "port": 2345,            "host": "127.0.0.1",            "program": "${fileDirname}",            "env": {                "GOPATH":"D:/Develop/vscodegolang"            },            "args": [],            "showLog": true        },        {            "name": "server",            "type": "go",            "request": "launch",            "mode": "debug",            "remotePath": "",            "port": 2345,            "host": "127.0.0.1",            "program": "${workspaceRoot}/src/server",            "env": {                "GOPATH":"D:/Develop/vscodegolang"            },            "args": [],            "showLog": true        }    ]}

"${filedirname}" in "program" is the starting point with the currently selected file

It is also recommended to use "program", "${workspaceroot}", as the package name as the starting point of the way to configure

Reference links

Debugging in Visual Studio Code