Let’s talk about the issue of vendor settings in golang

With the wide application of Go language in development, more and more companies and teams are beginning to use Go language for development. One of the questions that arises is how to handle dependency management. The Go language has its own dependency management tool, but you may encounter some problems during use of this tool, one of which is the problem of vendor settings.

Vendor is a mechanism that comes with the Go language and is used to manage dependency packages in projects. Normally, a Go language project may use many third-party libraries, and these libraries need to be downloaded and installed. Using the vendor mechanism, we can place these dependency packages in the vendor subdirectory of the project directory, so that dependency packages can be managed directly within the project without downloading them from the Internet.

In the above process, there are two setting methods to choose from: global settings and local settings.

Global settings

In global settings mode, we need to use the following command in the command line:

go env -w GOFLAGS=-mod=vendor

This command will set the GOFLAGSenvironment variable Set to -mod=vendor, which means that during the installation and building of Go projects, dependency packages in the vendor directory will be used first.

However, this setting method is not very flexible and may cause some dependent packages to not be updated externally in a timely manner. Moreover, this approach will also affect other Go language projects. Therefore, when creating a new project or switching to a new project, we may need to reset this environment variable.

Local settings

In local settings mode, we need to modify the go.mod file in the project directory and add the following code:

go 1.16
mod vendor

where , go 1.16 is the version number of the Go language, and mod vendor means using the dependency package in the vendor directory. In this way, all dependent files will be placed in the vendor subdirectory of the project directory.

This setting method is very flexible and can be easily integrated with version control tools. The disadvantage is that each project needs to be set up individually and version conflicts may arise.

In general, vendor settings are one of the important steps in managing dependency packages of Go language projects. Although the global setting method is very simple, in order to better manage dependent packages and improve the maintainability of the project, it is recommended to use the local setting method.

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