[Cronet] Enable persistence mode for Sdch

components/cronet/android/test/sdch_test_util.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "sdch_test_util.h"
+
+#include <string>
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/bind.h"
+#include "base/macros.h"
+#include "components/cronet/android/cronet_url_request_context_adapter.h"
+#include "components/cronet/android/url_request_context_adapter.h"
+#include "jni/SdchTestUtil_jni.h"
+#include "net/base/sdch_manager.h"
+#include "net/base/sdch_observer.h"
+#include "net/url_request/url_request_context.h"
+#include "url/gurl.h"
+
+namespace cronet {
+
+namespace {
+
+class TestSdchObserver : public net::SdchObserver {
+ public:
+  TestSdchObserver(net::SdchManager* manager) : manager_(manager) {}
+
+  // SdchObserver implementation
+  void OnDictionaryAdded(const GURL& dictionary_url,
+                         const std::string& server_hash) override {
+    JNIEnv* env = base::android::AttachCurrentThread();
+    Java_SdchTestUtil_onDictionaryAdded(
+        env, base::android::ConvertUTF8ToJavaString(env, dictionary_url.spec())
+                 .Release());
+    manager_->RemoveObserver(this);
+    delete this;
+  }
+
+  void OnDictionaryRemoved(const std::string& server_hash) override{};
+
+  void OnDictionaryUsed(const std::string& server_hash) override{};
+
+  void OnGetDictionary(const GURL& request_url,
+                       const GURL& dictionary_url) override{};
+
+  void OnClearDictionaries() override{};
+
+ private:
+  net::SdchManager* manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestSdchObserver);
+};
+
+void AddSdchObserverHelper(const GURL& target_url,
+                           net::URLRequestContext* url_request_context) {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  // If dictionaries are already added, skip adding the observer.
+  if (url_request_context->sdch_manager()->GetDictionarySet(target_url)) {
+    Java_SdchTestUtil_onAddSdchObserverCompleted(env, JNI_FALSE);
+    return;
+  }
+
+  url_request_context->sdch_manager()->AddObserver(
+      new TestSdchObserver(url_request_context->sdch_manager()));
+  Java_SdchTestUtil_onAddSdchObserverCompleted(env, JNI_TRUE);
+}
+
+void AddSdchObserverOnNetworkThread(
+    const GURL& target_url,
+    CronetURLRequestContextAdapter* context_adapter) {
+  AddSdchObserverHelper(target_url, context_adapter->GetURLRequestContext());
+}
+
+// TODO(xunjieli): Delete this once legacy API is removed.
+void AddSdchObserverOnNetworkThreadLegacyAPI(
+    const GURL& target_url,
+    URLRequestContextAdapter* context_adapter) {
+  AddSdchObserverHelper(target_url, context_adapter->GetURLRequestContext());
+}
+
+}  // namespace
+
+void AddSdchObserver(JNIEnv* env,
+                     jclass jcaller,
+                     jstring jtarget_url,
+                     jlong jadapter,
+                     jboolean jlegacy_api) {
+  GURL target_url(base::android::ConvertJavaStringToUTF8(env, jtarget_url));
+  if (jlegacy_api == JNI_TRUE) {

[mef, 2015/05/21 17:29:44]

I'd still argue that there is too little in common to have this in one function,
and suggest splitting into 'AddSdchObserver' and 'AddSdchObserverLegacyAPI'.

[xunjieli, 2015/05/21 17:45:26]

Done. Agreed.

+    URLRequestContextAdapter* context_adapter =
+        reinterpret_cast<URLRequestContextAdapter*>(jadapter);
+    context_adapter->PostTaskToNetworkThread(
+        FROM_HERE, base::Bind(&AddSdchObserverOnNetworkThreadLegacyAPI,
+                              target_url, base::Unretained(context_adapter)));
+    return;
+  }
+  CronetURLRequestContextAdapter* context_adapter =
+      reinterpret_cast<CronetURLRequestContextAdapter*>(jadapter);
+  context_adapter->PostTaskToNetworkThread(
+      FROM_HERE, base::Bind(&AddSdchObserverOnNetworkThread, target_url,
+                            base::Unretained(context_adapter)));
+}
+
+bool RegisterSdchTestUtil(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace cronet