[BREAKINGCHANGE] fetch plugin based on version

[shahrokni]

perses/perses#1186

⚠️ BACKEND NEEDS TO BE UPDAED. EXPLAINED AT THE END OF DESCRIPTION

Different Plugins Versions and Registries

So far a plugin could be imported by its name only.

const remoteEntryURL = baseURL ? `${baseURL}/${name}/mf-manifest.json` : `/plugins/${name}/mf-manifest.json`;

The backend has recently introduced a feature by which multiple versions of the same plugin could be available.
This means if the consumer of the Plugin Registry provided the version and registry, the exact desired plugin could be loaded in the front!

To achieve the mentioned goal the new URL will carry the version and registry as well. If not provided by the consumer, the front uses the default values introduced by the backend which are latest and perses.dev

 const remoteEntryURL = baseURL
      ? `${baseURL}/${name}/${registry || DEFAULT_PLUGIN_REGISTRY}/${version || DEFAULT_PLUGIN_VERSION}/mf-manifest.json`
      : `/plugins/${name}/${registry || DEFAULT_PLUGIN_REGISTRY}/${version || DEFAULT_PLUGIN_VERSION}/mf-manifest.json`;

/*ESAMPLE FROM MY LOCAL MACHINE BY DEFAULT VALUES*/
/* http://localhost:3000/plugins/TimeSeriesChart/perses.dev/latest/mf-manifest.json */

⚠️ Backend needs to do

Backend should be adjusted to manage the new URL. I checked the backend and understood that at the moment the intercepted GET request is translated to the address of the files on the disk. Please take a look at (ui\endpoint.go)
I believe the following shared code should be adjusted for the new URL that I just explained.

if devEnvironment == nil {
		// In that case, we need to read the requested files from the file system.
		// The First thing to do is to replace the URL path with the local path of the plugin.
		localPath := strings.Replace(req.URL.Path, fmt.Sprintf("%s/plugins/%s", f.apiPrefix, pluginName), loaded.LocalPath, 1)

		// Then we just need to rely on the echo router to serve the file.

		// X-Content-Type-Options: nosniff is an HTTP response header that tells browsers: "Do not try to guess the content type — trust the Content-Type header I sent you."
		// Without it, browsers perform "MIME sniffing". For example, a file served as text/plain could be sniffed as text/html and executed as HTML, which could open the door to XSS attacks.
		// See https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Content-Type-Options
		c.Response().Header().Set("X-Content-Type-Options", "nosniff")
		return c.File(localPath)
	}

There is also a TODO comment in backend that I believe could to be addressed now

// TODO: These hardcoded values should be replaced once the frontend is able to manage multiple registries and plugin versions.
	// This suppose to update the plugin system first.
	// These hardocded values are matching the default behavior of the plugin system and it helps to keep backward compatibility.
	loaded, isLoaded := f.pluginService.GetLoadedPlugin(pluginName, pluginModel.LatestVersion, pluginModel.DefaultRegistry)
	if !isLoaded || !loaded.Module.Status.IsLoaded {
		logrus.Errorf("unable to find the plugin => %s", pluginName)
		return apiinterface.NotFoundError
	}

Checklist

• Pull request has a descriptive title and context useful to a reviewer.
• Pull request title follows the [<catalog_entry>] <commit message> naming convention using one of the
  following catalog_entry values: FEATURE, ENHANCEMENT, BUGFIX, BREAKINGCHANGE, DOC,IGNORE.
• All commits have DCO signoffs.

UI Changes

• Changes that impact the UI include screenshots and/or screencasts of the relevant changes.
• Code follows the UI guidelines.
• E2E tests are stable and unlikely to be flaky.
  See e2e docs for more details. Common issues include:
  • Is the data inconsistent? You need to mock API requests.
  • Does the time change? You need to use consistent time values or mock time utilities.
  • Does it have loading states? You need to wait for loading to complete.

[Nexucis]

Thank you @shahrokni for updating the frontend regarding the plugin multi version management !

Indeed the backend will need to be updated at some point, but hopefully that should be as easy as to update the regexp

capturingPluginName = regexp.MustCompile(`/plugins/([a-zA-Z0-9_-]+)/?.*`)

to catch the registry and the version.

[shahrokni]

⚠️ DO NOT MERGE, CHECKING THE BACKEND CHANGE