Source/WebCore/workers/shared/SharedWorkerObjectConnection.cpp

/*
 * Copyright (C) 2022 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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#include "config.h"
#include "SharedWorkerObjectConnection.h"

#include "ActiveDOMObject.h"
#include "ErrorEvent.h"
#include "Logging.h"
#include "ScriptBuffer.h"
#include "SharedWorker.h"
#include "SharedWorkerScriptLoader.h"
#include "WorkerFetchResult.h"
#include "WorkerInitializationData.h"
#include "WorkerScriptLoader.h"

namespace WebCore {

#define CONNECTION_RELEASE_LOG(fmt, ...) RELEASE_LOG(SharedWorker, "%p - SharedWorkerObjectConnection::" fmt, this, ##__VA_ARGS__)
#define CONNECTION_RELEASE_LOG_ERROR(fmt, ...) RELEASE_LOG_ERROR(SharedWorker, "%p - SharedWorkerObjectConnection::" fmt, this, ##__VA_ARGS__)

static uint64_t loaderIdentifierSeed = 0;

SharedWorkerObjectConnection::SharedWorkerObjectConnection() = default;

SharedWorkerObjectConnection::~SharedWorkerObjectConnection() = default;

void SharedWorkerObjectConnection::fetchScriptInClient(URL&& url, WebCore::SharedWorkerObjectIdentifier sharedWorkerObjectIdentifier, WorkerOptions&& workerOptions, CompletionHandler<void(WorkerFetchResult&&, WorkerInitializationData&&)>&& completionHandler)
{
    ASSERT(isMainThread());

    auto* workerObject = SharedWorker::fromIdentifier(sharedWorkerObjectIdentifier);
    CONNECTION_RELEASE_LOG("fetchScriptInClient: sharedWorkerObjectIdentifier=%{public}s, worker=%p", sharedWorkerObjectIdentifier.toString().utf8().data(), workerObject);
    if (!workerObject)
        return completionHandler(workerFetchError(ResourceError { ResourceError::Type::Cancellation }), { });

    auto loaderIdentifier = ++loaderIdentifierSeed;
    auto loader = makeUniqueRef<SharedWorkerScriptLoader>(WTFMove(url), *workerObject, WTFMove(workerOptions));
    auto loaderPtr = loader.ptr();
    m_loaders.add(loaderIdentifier, WTFMove(loader));

    loaderPtr->load([this, loaderIdentifier, completionHandler = WTFMove(completionHandler)](auto&& fetchResult, auto&& initializationData) mutable {
        CONNECTION_RELEASE_LOG("fetchScriptInClient: finished script load, success=%d", fetchResult.error.isNull());
        auto loader = m_loaders.take(loaderIdentifier);
        ASSERT(loader);
        completionHandler(WTFMove(fetchResult), WTFMove(initializationData));
    });
}

void SharedWorkerObjectConnection::notifyWorkerObjectOfLoadCompletion(WebCore::SharedWorkerObjectIdentifier sharedWorkerObjectIdentifier, const ResourceError& error)
{
    ASSERT(isMainThread());
    auto* workerObject = SharedWorker::fromIdentifier(sharedWorkerObjectIdentifier);
    if (error.isNull())
        CONNECTION_RELEASE_LOG("notifyWorkerObjectOfLoadCompletion: sharedWorkerObjectIdentifier=%{public}s, worker=%p, load succeeded", sharedWorkerObjectIdentifier.toString().utf8().data(), workerObject);
    else
        CONNECTION_RELEASE_LOG_ERROR("notifyWorkerObjectOfLoadCompletion: sharedWorkerObjectIdentifier=%{public}s, worker=%p, load failed", sharedWorkerObjectIdentifier.toString().utf8().data(), workerObject);
    if (workerObject)
        workerObject->didFinishLoading(error);
}

void SharedWorkerObjectConnection::postExceptionToWorkerObject(SharedWorkerObjectIdentifier sharedWorkerObjectIdentifier, const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL)
{
    ASSERT(isMainThread());
    auto* workerObject = SharedWorker::fromIdentifier(sharedWorkerObjectIdentifier);
    CONNECTION_RELEASE_LOG_ERROR("postExceptionToWorkerObject: sharedWorkerObjectIdentifier=%{public}s, worker=%p", sharedWorkerObjectIdentifier.toString().utf8().data(), workerObject);
    if (workerObject)
        ActiveDOMObject::queueTaskToDispatchEvent(*workerObject, TaskSource::DOMManipulation, ErrorEvent::create(errorMessage, sourceURL, lineNumber, columnNumber, { }));
}

#undef CONNECTION_RELEASE_LOG
#undef CONNECTION_RELEASE_LOG_ERROR

} // namespace WebCore