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Prevent main Caddy module from upgrading from adding a plugin (#93)

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* Prevent main Caddy module from upgrading from adding a plugin

Fixes #54

* Better comment
This commit is contained in:
Francis Lavoie 2022-04-07 19:07:11 -04:00 committed by GitHub
parent 7d6084b6d7
commit 71ce25d1a2
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 31 additions and 6 deletions
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37
environment.go
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@ -128,7 +128,7 @@ func (b Builder) newEnvironment(ctx context.Context) (*environment, error) {
// pin versions by populating go.mod, first for Caddy itself and then plugins
log.Println("[INFO] Pinning versions")
err = env.execGoGet(ctx, caddyModulePath, env.caddyVersion)
err = env.execGoGet(ctx, caddyModulePath, env.caddyVersion, "", "")
if err != nil {
return nil, err
}
@ -143,7 +143,8 @@ nextPlugin:
continue nextPlugin
}
}
err = env.execGoGet(ctx, p.PackagePath, p.Version)
// also pass the Caddy version to prevent it from being upgraded
err = env.execGoGet(ctx, p.PackagePath, p.Version, caddyModulePath, env.caddyVersion)
if err != nil {
return nil, err
}
@ -154,12 +155,16 @@ nextPlugin:
default:
}
}
err = env.execGoGet(ctx, "", "")
// doing an empty "go get -d" can potentially resolve some
// ambiguities introduced by one of the plugins;
// see https://github.com/caddyserver/xcaddy/pull/92
err = env.execGoGet(ctx, "", "", "", "")
if err != nil {
return nil, err
}
log.Println("[INFO] Build environment ready")
log.Println("[INFO] Build environment ready")
return env, nil
}
@ -237,12 +242,32 @@ func (env environment) runCommand(ctx context.Context, cmd *exec.Cmd, timeout ti
}
}
func (env environment) execGoGet(ctx context.Context, modulePath, moduleVersion string) error {
// execGoGet runs "go get -d -v" with the given module/version as an argument.
// Also allows passing in a second module/version pair, meant to be the main
// Caddy module/version we're building against; this will prevent the
// plugin module from causing the Caddy version to upgrade, if the plugin
// version requires a newer version of Caddy.
// See https://github.com/caddyserver/xcaddy/issues/54
func (env environment) execGoGet(ctx context.Context, modulePath, moduleVersion, caddyModulePath, caddyVersion string) error {
mod := modulePath
if moduleVersion != "" {
mod += "@" + moduleVersion
}
cmd := env.newCommand("go", "get", "-d", "-v", mod)
caddy := caddyModulePath
if caddyVersion != "" {
caddy += "@" + caddyVersion
}
// using an empty string as an additional argument to "go get"
// breaks the command since it treats the empty string as a
// distinct argument, so we're using an if statement to avoid it.
var cmd *exec.Cmd
if caddy != "" {
cmd = env.newCommand("go", "get", "-d", "-v", mod, caddy)
} else {
cmd = env.newCommand("go", "get", "-d", "-v", mod)
}
return env.runCommand(ctx, cmd, env.timeoutGoGet)
}