Plugins: Fix plugins CDN not working when plugins are not in domain's root path (#63202)

* Plugins CDN: Add support for different CDN root path

* Plugins CDN: Make frontendsettings return the correct CDN base path

* Update comments

* Fix version detection

* Undo frontend changes

* Fix system.js asset path construction

* fix(plugins): translate all plugin css asset paths loaded via cdn

* refactor(plugins): rename extractPluginNameVersionFromUrl and add comments

* Fix typo in comment

Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>

* Hardcode CDN URL structure

/{id}/{version}/public/plugins/{id}/{assetPath} is not required anymore in the cdn url template config

---------

Co-authored-by: Jack Westbrook <jack.westbrook@gmail.com>
Co-authored-by: Will Browne <wbrowne@users.noreply.github.com>
This commit is contained in:
Giuseppe Guerra
2023-02-24 14:28:13 +01:00
committed by GitHub
parent b3c0e7e977
commit 966bcd3545
8 changed files with 153 additions and 99 deletions

View File

@ -2,16 +2,17 @@ package pluginscdn
import (
"errors"
"fmt"
"net/url"
"path"
"strings"
"github.com/grafana/grafana/pkg/plugins/config"
)
const (
// systemJSCDNKeyword is the path prefix used by system.js to identify the plugins CDN.
systemJSCDNKeyword = "plugin-cdn"
// cdnAssetPathTemplate is the relative path template used to locate plugin CDN assets
cdnAssetPathTemplate = "{id}/{version}/public/plugins/{id}/{assetPath}"
// systemJSCDNURLTemplate is a special path template used by system.js to identify plugin CDN assets
systemJSCDNURLTemplate = "plugin-cdn/" + cdnAssetPathTemplate
)
var ErrPluginNotCDN = errors.New("plugin is not a cdn plugin")
@ -30,7 +31,7 @@ func ProvideService(cfg *config.Cfg) *Service {
// and invalid base url.
func (s *Service) NewCDNURLConstructor(pluginID, pluginVersion string) URLConstructor {
return URLConstructor{
cdnURLTemplate: s.cfg.PluginsCDNURLTemplate,
cdnURLTemplate: strings.TrimRight(s.cfg.PluginsCDNURLTemplate, "/") + "/" + cdnAssetPathTemplate,
pluginID: pluginID,
pluginVersion: pluginVersion,
}
@ -47,27 +48,28 @@ func (s *Service) PluginSupported(pluginID string) bool {
}
// BaseURL returns the absolute base URL of the plugins CDN.
// This is the "fixed" part of the URL (protocol + host + root url).
// If the plugins CDN is disabled, it returns an empty string.
func (s *Service) BaseURL() (string, error) {
if !s.IsEnabled() {
return "", nil
}
u, err := url.Parse(s.cfg.PluginsCDNURLTemplate)
if err != nil {
return "", fmt.Errorf("url parse: %w", err)
}
return u.Scheme + "://" + u.Host, nil
return s.cfg.PluginsCDNURLTemplate, nil
}
// SystemJSAssetPath returns a system-js path for the specified asset on the plugins CDN.
// It replaces the base path of the CDN with systemJSCDNKeyword.
// The returned path will follow the template specified in systemJSCDNURLTemplate.
// If assetPath is an empty string, the base path for the plugin is returned.
func (s *Service) SystemJSAssetPath(pluginID, pluginVersion, assetPath string) (string, error) {
u, err := s.NewCDNURLConstructor(pluginID, pluginVersion).Path(assetPath)
u, err := URLConstructor{
cdnURLTemplate: systemJSCDNURLTemplate,
pluginID: pluginID,
pluginVersion: pluginVersion,
}.Path(assetPath)
if err != nil {
return "", err
}
return path.Join(systemJSCDNKeyword, u.Path), nil
return u.String(), nil
}
// AssetURL returns the URL of a CDN asset for a CDN plugin. If the specified plugin is not a CDN plugin,