FEATURE: Dynamic resource uri host (baseUri) for CLI

[mhsdesign]

Building a resource uri with the default configuration will crash on CLI:

No base URI could be provided.
This probably means a call was made outside of an HTTP request and a base
URI was neither configured nor specified as $fallbackRequest.

The entry point ResourceManager::getPublicPackageResourceUri
calls TargetInterface::getPublicStaticResourceUri
which will use the configured target like localWebDirectoryStaticResourcesTarget
which in case of the FileSystemTarget and FileSystemSymlinkTarget
will call the BaseUriProvider::getConfiguredBaseUriOrFallbackToCurrentRequest
which uses $bootstrap->getActiveRequestHandler->getHttpRequest which is not possible on CLI.

Possible workarounds include:

• statically set localWebDirectoryStaticResourcesTarget.targetOptions.baseUri to http://localhost:8081/_Resources/Static/Packages/
• statically set Neos.Flow.http.baseUri to http://localhost:8081
• hack the BaseUriProvider (see Get rid of configured baseUri #2157 (comment)) for dynamic multi site support
• hack by extending the targets to dynamically override getResourcesBaseUri https://github.com/Flowpack/Flowpack.DecoupledContentStore/blob/6adb8e04246f5fc9b8471b656db7ddf131474745/Classes/Transfer/Resource/Target/MultisiteFileSystemSymlinkTarget.php#L16-L38

To actually fix this issue we should pass the current base uri to the target:

interface TargetInterface
{
    public function getPublicStaticResourceUri(string $relativePathAndFilename, UriInterface $baseUri): string;

    public function getPublicPersistentResourceUri(PersistentResource $resource, UriInterface $baseUri): string;
    
    // ...
}

The methods are currently only used by the resource manager Neos & Flow.
And there we could allow a backwards compatible nullable parameter which will default to the current request:

class ResourceManager
{
    public function getPublicPackageResourceUri(string $packageKey, string $relativePathAndFilename, ?UriInterface $baseUri = null): string
    {
        $baseUri ??= $this->generateBaseUriFromHttpRequest();
        // ...
    }

    public function getPublicPersistentResourceUri(PersistentResource $resource, ?UriInterface $baseUri = null)
    {
        $baseUri ??= $this->generateBaseUriFromHttpRequest();
        // ...
    }

    private function generateBaseUriFromHttpRequest(): ?UriInterface
    {
        // copied from the base uri provider without `Neos.Flow.http.baseUri` support
        $activeRequestHandler = $this->bootstrap->getActiveRequestHandler();
        if (!$activeRequestHandler instanceof HttpRequestHandlerInterface) {
            return new Uri();
        }
        $request = $activeRequestHandler->getHttpRequest();
        return RequestInformationHelper::generateBaseUri($request);
    }
}

(i left out the demonstration for ResourceManager::getPublicPersistentResourceUriByHash as its unused)

Meaning the resource manager can be used with fixed base uris

$this->resourceManager->getPublicPersistentResourceUri($resource, new Uri('http://localhost'));

or when leaving this parameter out, the previous default behaviour is used:

$this->resourceManager->getPublicPersistentResourceUri($resource);

a little more breaking would be do always enforce to specify the baseUri which would definitely be correct.

In Fusion we could start inside our prototypes to call getPublicPersistentResourceUri with the base uri of the current
request and thus make the life a little easier ;)

• related bug cause BUG: NodeTypeManager can crash in cli context neos-development-collection#4888
• related Get rid of configured baseUri #2157

Alternative fixes

1. Add a context switcher like BaseUriProvider::applyBaseUriToClosure($newBaseUri, fn () => $resourcemanger->...(...))
2. Add an environment variable like FLOW_BASE_URI see FEATURE: Make base URI configuration obsolete #3002
   • (like option 1 but less hacky to the eye, as it could be specified from outside flow ^^)
3. Use empty base uri (host relative) and dont crash BUGFIX: Prevent getPublicStaticResourceUri from crashing in cli con… #3314

[kdambekalns]

I'd rather allow for a custom "base URI provider" anyone can implement if needed. Similar to https://github.com/flownative/flow-google-cloudstorage?tab=readme-ov-file#dynamic-custom-base-uri

[mhsdesign]

Okay @kitsunet argued before that we dont want to make the explicit passing of the base uri a concern of the resource targets as some of the targets absolutely not require this information like cloud storage where the host is determined by the cloud.

Now a recent change to one of the flow cloud packages, to the google cloud storage shows that this might not entirely be true and a feature was introduced to access flows base uri: flownative/flow-google-cloudstorage#49

to be able to implement something like this

targets:
  googlePersistentResourcesTarget:
    target: 'Flownative\Google\CloudStorage\GcsTarget'
    targetOptions:
      bucket: 'flownativecom.flownative.cloud'
      persistentResourceUris:
        pattern: '{flowBaseUri}assets/{sha1}/{filename}'

which probably relies on the web server redirecting internally all calls to assets to the respective cloud stored item. So that use case seems valid and now i am convinced that passing the desired base uri to the resource manger is a must:

$this->resourceManager->getPublicPersistentResourceUri($resource, new Uri('http://localhost'));

Wdyt? @kdambekalns

[mhsdesign]

@kdambekalns uupps comments are in a funny order ^^

the problem of a custom tunnel through space is that its still a tunnel and does not get the desired information from the outside but attempts to figure it out itself.

In #3354 i drafted out a way to make uri building mostly side effect free in terms of gathering required context - that requires the passing of important information explicitly from one part to the other.

A custom base uri provider php implementation must still be able to access something like the request - the possible actual one or a stubbed one which might be used to render fusion from cli. For that to be done without the current potholes of the tunnel through space the resource manager must receive that instead which is really odd: getPublicPersistentResourceUri($resource, $request)

[kdambekalns]

To me one method that can be asked and figures out things on it's own is fine.

Even when passing information down, where do you get the needed information from? So far the problem really exists only for CLI and the odd case of "multisite, but the URI is not the one we request". In both cases the developer is the only one who knows what would be correct – and probably could centralize that knowledge.

---

Background: The use case for the change to the Google Cloud Storage target was that absolute URIs were needed, due to some process that turned HTML into PDF and could not deal with URLs like /_Resources/… on it's own. So, it seemed easy enough to allow a fallback like people "expect" because that's what works in Flow.

[mhsdesign]

where do you get the needed information from?

well in fusion that is with the latest changes more simple. Normally fusion contains by convention a request environment variable that is specified when creating the runtime. Now with the new introduces concept of also other FusionGlobals we could easily make it a convention that we pass a baseUri and use that in the resource prototypes. But already using the request - which can be moked rather easy - and using the base uri from that exact (possibly fake) request will make the uri generation work in cli.

So instead of using the tunnel through space here https://github.com/neos/neos-development-collection/blob/cc70fedd9ac9ed21139f658a7746689dd76475ce/Neos.Fusion/Classes/FusionObjects/ResourceUriImplementation.php#L138 we could write:

$possibleRequest = $this->runtime->fusionGlobals->get('request');
if ($possibleRequest instanceof ActionRequest) {
    $baseUri = RequestInformationHelper::generateBaseUri($possibleRequest->getHttpRequest());
} else {
    // or fallback to baseUri or any other convention we find
    // $baseUri = $this->runtime->fusionGlobals->get('baseUri');
    throw new \RuntimeException();
}
return $this->resourceManager->getPublicPackageResourceUri($package, $path, $baseUri);

which will avoid any obscured errors from three miles away.

I opened a non breaking pr: #3445 and found imo a solution that shouldnt trouble us really that much - just an extra interface which allows to unlock the base uri functionality:

/**
 * Allows resource uris to be built with and absolute uri
 *
 * For targets implementing this interface, setAbsoluteBaseUri() must be invoked getting a resource uri
 *
 * - {@see TargetInterface::getPublicStaticResourceUri}
 * - {@see TargetInterface::getPublicPersistentResourceUri}
 */
interface AbsoluteBaseUriAwareTarget
{
    public function setAbsoluteBaseUri(UriInterface $baseUri): void;
}

[kdambekalns]

I suspect it is mostly causing issues when people have CLI commands, and I doubt the majority of those uses Fusion…

And how is a global Fusion variable holding the request better than a global PHP prototype?