168 lines
6.2 KiB
Markdown
168 lines
6.2 KiB
Markdown
---
|
|
stage: Package
|
|
group: Package
|
|
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
|
|
---
|
|
|
|
# Go proxy for GitLab
|
|
|
|
> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/27376) in [GitLab Premium](https://about.gitlab.com/pricing/) 13.1.
|
|
> - It's deployed behind a feature flag, disabled by default.
|
|
> - It's disabled for GitLab.com.
|
|
> - It's not recommended for production use.
|
|
> - To use it in GitLab self-managed instances, ask a GitLab administrator to [enable it](#enable-the-go-proxy).
|
|
> - [Moved](https://gitlab.com/gitlab-org/gitlab/-/issues/221259) to GitLab Core in 13.3.
|
|
|
|
With the Go proxy for GitLab, every project in GitLab can be fetched with the
|
|
[Go proxy protocol](https://proxy.golang.org/).
|
|
|
|
## Enable the Go proxy
|
|
|
|
The Go proxy for GitLab is under development, and isn't ready for production use
|
|
due to [potential performance issues with large repositories](https://gitlab.com/gitlab-org/gitlab/-/issues/218083).
|
|
|
|
It's deployed behind a feature flag that is _disabled by default_.
|
|
|
|
[GitLab administrators with access to the GitLab Rails console](../../../administration/feature_flags.md)
|
|
can enable it for your instance.
|
|
|
|
To enable it:
|
|
|
|
```ruby
|
|
Feature.enable(:go_proxy) # or
|
|
```
|
|
|
|
To disable it:
|
|
|
|
```ruby
|
|
Feature.disable(:go_proxy)
|
|
```
|
|
|
|
To enable or disable it for specific projects:
|
|
|
|
```ruby
|
|
Feature.enable(:go_proxy, Project.find(1))
|
|
Feature.disable(:go_proxy, Project.find(2))
|
|
```
|
|
|
|
NOTE: **Note:**
|
|
Even if it's enabled, GitLab doesn't display Go modules in the **Package Registry**.
|
|
Follow [this issue](https://gitlab.com/gitlab-org/gitlab/-/issues/213770) for
|
|
details.
|
|
|
|
## Add GitLab as a Go proxy
|
|
|
|
To use GitLab as a Go proxy, you must be using Go 1.13 or later.
|
|
|
|
The available proxy endpoint is for fetching modules by project: `/api/v4/projects/:id/packages/go`
|
|
|
|
To fetch Go modules from GitLab, add the project-specific endpoint to `GOPROXY`.
|
|
|
|
Go queries the endpoint and falls back to the default behavior:
|
|
|
|
```shell
|
|
go env -w GOPROXY='https://gitlab.example.com/api/v4/projects/1234/packages/go,https://proxy.golang.org,direct'
|
|
```
|
|
|
|
With this configuration, Go fetches dependencies in this order:
|
|
|
|
1. Go attempts to fetch from the project-specific Go proxy.
|
|
1. Go attempts to fetch from [proxy.golang.org](https://proxy.golang.org).
|
|
1. Go fetches directly with version control system operations (like `git clone`,
|
|
`svn checkout`, and so on).
|
|
|
|
If `GOPROXY` isn't specified, Go follows steps 2 and 3, which corresponds to
|
|
setting `GOPROXY` to `https://proxy.golang.org,direct`. If `GOPROXY`
|
|
contains only the project-specific endpoint, Go queries only that endpoint.
|
|
|
|
For details about how to set Go environment variables, see
|
|
[Set environment variables](#set-environment-variables).
|
|
|
|
For details about configuring `GOPROXY`, see
|
|
[Dependency Management in Go > Proxies](../../../development/go_guide/dependencies.md#proxies).
|
|
|
|
## Fetch modules from private projects
|
|
|
|
`go` doesn't support transmitting credentials over insecure connections. The
|
|
following steps work only if GitLab is configured for HTTPS:
|
|
|
|
1. Configure Go to include HTTP basic authentication credentials when fetching
|
|
from the Go proxy for GitLab.
|
|
1. Configure Go to skip downloading of checksums for private GitLab projects
|
|
from the public checksum database.
|
|
|
|
### Enable request authentication
|
|
|
|
Create a [personal access token](../../profile/personal_access_tokens.md) with
|
|
the scope set to `api` or `read_api`.
|
|
|
|
Open your [`~/.netrc`](https://ec.haxx.se/usingcurl/usingcurl-netrc) file
|
|
and add the following text. Replace the variables in `< >` with your values.
|
|
|
|
```plaintext
|
|
machine <url> login <username> password <token>
|
|
```
|
|
|
|
- `<url>`: The GitLab URL, for example `gitlab.com`.
|
|
- `<username>`: Your username.
|
|
- `<token>`: Your personal access token.
|
|
|
|
### Disable checksum database queries
|
|
|
|
When downloading dependencies with Go 1.13 and later, fetched sources are
|
|
validated against the checksum database `sum.golang.org`.
|
|
|
|
If the checksum of the fetched sources doesn't match the checksum from the
|
|
database, Go doesn't build the dependency.
|
|
|
|
Private modules fail to build because `sum.golang.org` can't fetch the source
|
|
of private modules, and so it cannot provide a checksum.
|
|
|
|
To resolve this issue, set `GONOSUMDB` to a comma-separated list of private
|
|
projects. For details about setting Go environment variables, see
|
|
[Set environment variables](#set-environment-variables). For more details about
|
|
disabling this feature of Go, see
|
|
[Dependency Management in Go > Checksums](../../../development/go_guide/dependencies.md#checksums).
|
|
|
|
For example, to disable checksum queries for `gitlab.com/my/project`, set
|
|
`GONOSUMDB`:
|
|
|
|
```shell
|
|
go env -w GONOSUMDB='gitlab.com/my/project,<previous value>'
|
|
```
|
|
|
|
## Working with Go
|
|
|
|
If you're unfamiliar with managing dependencies in Go, or Go in general, review
|
|
the following documentation:
|
|
|
|
- [Dependency Management in Go](../../../development/go_guide/dependencies.md)
|
|
- [Go Modules Reference](https://golang.org/ref/mod)
|
|
- [Documentation (`golang.org`)](https://golang.org/doc/)
|
|
- [Learn (`learn.go.dev`)](https://learn.go.dev/)
|
|
|
|
### Set environment variables
|
|
|
|
Go uses environment variables to control various features. You can manage these
|
|
variables in all the usual ways. However, Go 1.14 reads and writes Go
|
|
environment variables to and from a special Go environment file, `~/.go/env` by
|
|
default.
|
|
|
|
- If `GOENV` is set to a file, Go reads and writes to and from that file instead.
|
|
- If `GOENV` is not set but `GOPATH` is set, Go reads and writes `$GOPATH/env`.
|
|
|
|
Go environment variables can be read with `go env <var>` and, in Go 1.14 and
|
|
later, can be written with `go env -w <var>=<value>`. For example,
|
|
`go env GOPATH` or `go env -w GOPATH=/go`.
|
|
|
|
### Release a module
|
|
|
|
Go modules and module versions are defined by source repositories, such as Git,
|
|
SVN, and Mercurial. A module is a repository that contains `go.mod` and Go
|
|
files. Module versions are defined by VCS tags.
|
|
|
|
To publish a module, push `go.mod` and source files to a VCS repository. To
|
|
publish a module version, push a VCS tag.
|
|
|
|
See [Dependency Management in Go > Versioning](../../../development/go_guide/dependencies.md#versioning)
|
|
for more details about what constitutes a valid module or module version.
|