import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/cache/CacheOpChild.cpp

@@ -0,0 +1,268 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/cache/CacheOpChild.h"
+
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/Request.h"
+#include "mozilla/dom/Response.h"
+#include "mozilla/dom/cache/Cache.h"
+#include "mozilla/dom/cache/CacheChild.h"
+#include "mozilla/dom/cache/CacheStreamControlChild.h"
+
+namespace mozilla {
+namespace dom {
+namespace cache {
+
+using mozilla::ipc::PBackgroundChild;
+
+namespace {
+
+void
+AddWorkerHolderToStreamChild(const CacheReadStream& aReadStream,
+                             CacheWorkerHolder* aWorkerHolder)
+{
+  MOZ_ASSERT_IF(!NS_IsMainThread(), aWorkerHolder);
+  CacheStreamControlChild* cacheControl =
+    static_cast<CacheStreamControlChild*>(aReadStream.controlChild());
+  if (cacheControl) {
+    cacheControl->SetWorkerHolder(aWorkerHolder);
+  }
+}
+
+void
+AddWorkerHolderToStreamChild(const CacheResponse& aResponse,
+                             CacheWorkerHolder* aWorkerHolder)
+{
+  MOZ_ASSERT_IF(!NS_IsMainThread(), aWorkerHolder);
+
+  if (aResponse.body().type() == CacheReadStreamOrVoid::Tvoid_t) {
+    return;
+  }
+
+  AddWorkerHolderToStreamChild(aResponse.body().get_CacheReadStream(),
+                               aWorkerHolder);
+}
+
+void
+AddWorkerHolderToStreamChild(const CacheRequest& aRequest,
+                             CacheWorkerHolder* aWorkerHolder)
+{
+  MOZ_ASSERT_IF(!NS_IsMainThread(), aWorkerHolder);
+
+  if (aRequest.body().type() == CacheReadStreamOrVoid::Tvoid_t) {
+    return;
+  }
+
+  AddWorkerHolderToStreamChild(aRequest.body().get_CacheReadStream(),
+                               aWorkerHolder);
+}
+
+} // namespace
+
+CacheOpChild::CacheOpChild(CacheWorkerHolder* aWorkerHolder,
+                           nsIGlobalObject* aGlobal,
+                           nsISupports* aParent, Promise* aPromise)
+  : mGlobal(aGlobal)
+  , mParent(aParent)
+  , mPromise(aPromise)
+{
+  MOZ_DIAGNOSTIC_ASSERT(mGlobal);
+  MOZ_DIAGNOSTIC_ASSERT(mParent);
+  MOZ_DIAGNOSTIC_ASSERT(mPromise);
+
+  MOZ_ASSERT_IF(!NS_IsMainThread(), aWorkerHolder);
+  SetWorkerHolder(aWorkerHolder);
+}
+
+CacheOpChild::~CacheOpChild()
+{
+  NS_ASSERT_OWNINGTHREAD(CacheOpChild);
+  MOZ_DIAGNOSTIC_ASSERT(!mPromise);
+}
+
+void
+CacheOpChild::ActorDestroy(ActorDestroyReason aReason)
+{
+  NS_ASSERT_OWNINGTHREAD(CacheOpChild);
+
+  // If the actor was terminated for some unknown reason, then indicate the
+  // operation is dead.
+  if (mPromise) {
+    mPromise->MaybeReject(NS_ERROR_FAILURE);
+    mPromise = nullptr;
+  }
+
+  RemoveWorkerHolder();
+}
+
+bool
+CacheOpChild::Recv__delete__(const ErrorResult& aRv,
+                             const CacheOpResult& aResult)
+{
+  NS_ASSERT_OWNINGTHREAD(CacheOpChild);
+
+  if (NS_WARN_IF(aRv.Failed())) {
+    MOZ_DIAGNOSTIC_ASSERT(aResult.type() == CacheOpResult::Tvoid_t);
+    // TODO: Remove this const_cast (bug 1152078).
+    // It is safe for now since this ErrorResult is handed off to us by IPDL
+    // and is thrown into the trash afterwards.
+    mPromise->MaybeReject(const_cast<ErrorResult&>(aRv));
+    mPromise = nullptr;
+    return true;
+  }
+
+  switch (aResult.type()) {
+    case CacheOpResult::TCacheMatchResult:
+    {
+      HandleResponse(aResult.get_CacheMatchResult().responseOrVoid());
+      break;
+    }
+    case CacheOpResult::TCacheMatchAllResult:
+    {
+      HandleResponseList(aResult.get_CacheMatchAllResult().responseList());
+      break;
+    }
+    case CacheOpResult::TCachePutAllResult:
+    {
+      mPromise->MaybeResolveWithUndefined();
+      break;
+    }
+    case CacheOpResult::TCacheDeleteResult:
+    {
+      mPromise->MaybeResolve(aResult.get_CacheDeleteResult().success());
+      break;
+    }
+    case CacheOpResult::TCacheKeysResult:
+    {
+      HandleRequestList(aResult.get_CacheKeysResult().requestList());
+      break;
+    }
+    case CacheOpResult::TStorageMatchResult:
+    {
+      HandleResponse(aResult.get_StorageMatchResult().responseOrVoid());
+      break;
+    }
+    case CacheOpResult::TStorageHasResult:
+    {
+      mPromise->MaybeResolve(aResult.get_StorageHasResult().success());
+      break;
+    }
+    case CacheOpResult::TStorageOpenResult:
+    {
+      auto actor = static_cast<CacheChild*>(
+        aResult.get_StorageOpenResult().actorChild());
+
+      // If we have a success status then we should have an actor.  Gracefully
+      // reject instead of crashing, though, if we get a nullptr here.
+      MOZ_DIAGNOSTIC_ASSERT(actor);
+      if (!actor) {
+        ErrorResult status;
+        status.ThrowTypeError<MSG_CACHE_OPEN_FAILED>();
+        mPromise->MaybeReject(status);
+        break;
+      }
+
+      actor->SetWorkerHolder(GetWorkerHolder());
+      RefPtr<Cache> cache = new Cache(mGlobal, actor);
+      mPromise->MaybeResolve(cache);
+      break;
+    }
+    case CacheOpResult::TStorageDeleteResult:
+    {
+      mPromise->MaybeResolve(aResult.get_StorageDeleteResult().success());
+      break;
+    }
+    case CacheOpResult::TStorageKeysResult:
+    {
+      mPromise->MaybeResolve(aResult.get_StorageKeysResult().keyList());
+      break;
+    }
+    default:
+      MOZ_CRASH("Unknown Cache op result type!");
+  }
+
+  mPromise = nullptr;
+
+  return true;
+}
+
+void
+CacheOpChild::StartDestroy()
+{
+  NS_ASSERT_OWNINGTHREAD(CacheOpChild);
+
+  // Do not cancel on-going operations when WorkerHolder calls this.  Instead,
+  // keep the Worker alive until we are done.
+}
+
+nsIGlobalObject*
+CacheOpChild::GetGlobalObject() const
+{
+  return mGlobal;
+}
+
+#ifdef DEBUG
+void
+CacheOpChild::AssertOwningThread() const
+{
+  NS_ASSERT_OWNINGTHREAD(CacheOpChild);
+}
+#endif
+
+PBackgroundChild*
+CacheOpChild::GetIPCManager()
+{
+  MOZ_CRASH("CacheOpChild does not implement TypeUtils::GetIPCManager()");
+}
+
+void
+CacheOpChild::HandleResponse(const CacheResponseOrVoid& aResponseOrVoid)
+{
+  if (aResponseOrVoid.type() == CacheResponseOrVoid::Tvoid_t) {
+    mPromise->MaybeResolveWithUndefined();
+    return;
+  }
+
+  const CacheResponse& cacheResponse = aResponseOrVoid.get_CacheResponse();
+
+  AddWorkerHolderToStreamChild(cacheResponse, GetWorkerHolder());
+  RefPtr<Response> response = ToResponse(cacheResponse);
+
+  mPromise->MaybeResolve(response);
+}
+
+void
+CacheOpChild::HandleResponseList(const nsTArray<CacheResponse>& aResponseList)
+{
+  AutoTArray<RefPtr<Response>, 256> responses;
+  responses.SetCapacity(aResponseList.Length());
+
+  for (uint32_t i = 0; i < aResponseList.Length(); ++i) {
+    AddWorkerHolderToStreamChild(aResponseList[i], GetWorkerHolder());
+    responses.AppendElement(ToResponse(aResponseList[i]));
+  }
+
+  mPromise->MaybeResolve(responses);
+}
+
+void
+CacheOpChild::HandleRequestList(const nsTArray<CacheRequest>& aRequestList)
+{
+  AutoTArray<RefPtr<Request>, 256> requests;
+  requests.SetCapacity(aRequestList.Length());
+
+  for (uint32_t i = 0; i < aRequestList.Length(); ++i) {
+    AddWorkerHolderToStreamChild(aRequestList[i], GetWorkerHolder());
+    requests.AppendElement(ToRequest(aRequestList[i]));
+  }
+
+  mPromise->MaybeResolve(requests);
+}
+
+} // namespace cache
+} // namespace dom
+} // namespace mozilla