[android] Use new FileSourceManager interface

Use new interface for Android classes:

- FileSource
- OfflineRegion
- OfflineManager

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/storage/FileSource.java

@@ -22,7 +22,7 @@
 import java.util.concurrent.locks.ReentrantLock;
 
 /**
- * Holds a central reference to the core's DefaultFileSource for as long as
+ * Holds a central reference to the core's FileSource instances for as long as
  * there are active mapviews / offline managers
  */
 public class FileSource {

platform/android/filesource-files.json

@@ -10,6 +10,7 @@
         "platform/android/src/offline/offline_region_definition.cpp",
         "platform/android/src/offline/offline_region_error.cpp",
         "platform/android/src/offline/offline_region_status.cpp",
+        "platform/default/src/mbgl/storage/file_source_manager.cpp",
         "platform/default/src/mbgl/storage/sqlite3.cpp"
     ],
     "public_headers": {},

platform/android/src/asset_manager_file_source.cpp

@@ -1,10 +1,11 @@
 #include "asset_manager_file_source.hpp"
 
 #include <mbgl/storage/file_source_request.hpp>
+#include <mbgl/storage/resource.hpp>
 #include <mbgl/storage/response.hpp>
-#include <mbgl/util/util.hpp>
 #include <mbgl/util/thread.hpp>
 #include <mbgl/util/url.hpp>
+#include <mbgl/util/util.hpp>
 
 #include <android/asset_manager.h>
 #include <android/asset_manager_jni.h>
@@ -54,4 +55,8 @@ std::unique_ptr<AsyncRequest> AssetManagerFileSource::request(const Resource& re
     return std::move(req);
 }
 
+bool AssetManagerFileSource::canRequest(const Resource& resource) const {
+    return 0 == resource.url.rfind(mbgl::util::ASSET_PROTOCOL, 0);
+}
+
 } // namespace mbgl

platform/android/src/asset_manager_file_source.hpp

@@ -18,6 +18,7 @@ class AssetManagerFileSource : public FileSource {
     ~AssetManagerFileSource() override;
 
     std::unique_ptr<AsyncRequest> request(const Resource&, Callback) override;
+    bool canRequest(const Resource&) const override;
 
 private:
     class Impl;

platform/android/src/file_source.cpp

@@ -5,6 +5,7 @@
 
 #include <mbgl/actor/actor.hpp>
 #include <mbgl/actor/scheduler.hpp>
+#include <mbgl/storage/file_source_manager.hpp>
 #include <mbgl/storage/resource_options.hpp>
 #include <mbgl/storage/resource_transform.hpp>
 #include <mbgl/util/logging.hpp>
@@ -14,21 +15,6 @@
 #include "asset_manager_file_source.hpp"
 
 namespace mbgl {
-
-std::shared_ptr<FileSource> FileSource::createPlatformFileSource(const ResourceOptions& options) {
-    auto env{android::AttachEnv()};
-    std::shared_ptr<DefaultFileSource> fileSource;
-    if (android::Mapbox::hasInstance(*env)) {
-        auto assetManager = android::Mapbox::getAssetManager(*env);
-        fileSource = std::make_shared<DefaultFileSource>(options.cachePath(),
-                                                         std::make_unique<AssetManagerFileSource>(*env, assetManager));
-    } else {
-        fileSource = std::make_shared<DefaultFileSource>(options.cachePath(), options.assetPath());
-    }
-    fileSource->setAccessToken(options.accessToken());
-    return fileSource;
-}
-
 namespace android {
 
 // FileSource //
@@ -37,53 +23,99 @@ FileSource::FileSource(jni::JNIEnv& _env, const jni::String& accessToken, const
     std::string path = jni::Make<std::string>(_env, _cachePath);
     mapbox::sqlite::setTempPath(path);
 
+    mbgl::FileSourceManager::get()->registerFileSourceFactory(
+        mbgl::FileSourceType::Asset, [](const mbgl::ResourceOptions&) {
+            auto env{android::AttachEnv()};
+            std::unique_ptr<mbgl::FileSource> assetFileSource;
+            if (android::Mapbox::hasInstance(*env)) {
+                auto assetManager = android::Mapbox::getAssetManager(*env);
+                assetFileSource = std::make_unique<AssetManagerFileSource>(*env, assetManager);
+            }
+            return assetFileSource;
+        });
+
     resourceOptions.withAccessToken(accessToken ? jni::Make<std::string>(_env, accessToken) : "")
         .withCachePath(path + DATABASE_FILE);
 
-    // Create a core default file source
-    fileSource = std::static_pointer_cast<mbgl::DefaultFileSource>(mbgl::FileSource::getSharedFileSource(resourceOptions));
+    // Create a core file sources
+    // TODO: Split Android FileSource API to smaller interfaces
+    resourceLoader =
+        mbgl::FileSourceManager::get()->getFileSource(mbgl::FileSourceType::ResourceLoader, resourceOptions);
+    databaseSource = std::static_pointer_cast<mbgl::DatabaseFileSource>(
+        mbgl::FileSourceManager::get()->getFileSource(mbgl::FileSourceType::Database, resourceOptions));
+    onlineSource = std::static_pointer_cast<mbgl::OnlineFileSource>(
+        mbgl::FileSourceManager::get()->getFileSource(mbgl::FileSourceType::Network, resourceOptions));
 }
 
 FileSource::~FileSource() {
 }
 
 jni::Local<jni::String> FileSource::getAccessToken(jni::JNIEnv& env) {
-    return jni::Make<jni::String>(env, fileSource->getAccessToken());
+    if (auto* token = onlineSource->getProperty("access-token").getString()) {
+        return jni::Make<jni::String>(env, *token);
+    }
+
+    ThrowNew(env, jni::FindClass(env, "java/lang/IllegalStateException"), "Online functionality is disabled.");
+    return jni::Make<jni::String>(env, "");
 }
 
 void FileSource::setAccessToken(jni::JNIEnv& env, const jni::String& token) {
-    fileSource->setAccessToken(token ? jni::Make<std::string>(env, token) : "");
+    if (onlineSource) {
+        onlineSource->setProperty("access-token", token ? jni::Make<std::string>(env, token) : "");
+    } else {
+        ThrowNew(env, jni::FindClass(env, "java/lang/IllegalStateException"), "Online functionality is disabled.");
+    }
 }
 
 void FileSource::setAPIBaseUrl(jni::JNIEnv& env, const jni::String& url) {
-    fileSource->setAPIBaseURL(jni::Make<std::string>(env, url));
+    if (onlineSource) {
+        onlineSource->setProperty("api-base-url", jni::Make<std::string>(env, url));
+    } else {
+        ThrowNew(env, jni::FindClass(env, "java/lang/IllegalStateException"), "Online functionality is disabled.");
+    }
 }
 
 void FileSource::setResourceTransform(jni::JNIEnv& env, const jni::Object<FileSource::ResourceTransformCallback>& transformCallback) {
+    // Core could be built without support for network resource provider.
+    if (!onlineSource) {
+        ThrowNew(env, jni::FindClass(env, "java/lang/IllegalStateException"), "Online functionality is disabled.");
+        return;
+    }
+
     if (transformCallback) {
         auto global = jni::NewGlobal<jni::EnvAttachingDeleter>(env, transformCallback);
-        resourceTransform = std::make_unique<Actor<ResourceTransform>>(
+        resourceTransform = std::make_unique<Actor<ResourceTransform::TransformCallback>>(
             *Scheduler::GetCurrent(),
             // Capture the ResourceTransformCallback object as a managed global into
             // the lambda. It is released automatically when we're setting a new ResourceTransform in
             // a subsequent call.
             // Note: we're converting it to shared_ptr because this lambda is converted to a std::function,
             // which requires copyability of its captured variables.
-            [callback = std::make_shared<decltype(global)>(std::move(global))](mbgl::Resource::Kind kind,
-                                                                               const std::string& url_) {
+            [callback = std::make_shared<decltype(global)>(std::move(global))](
+                mbgl::Resource::Kind kind, const std::string& url_, ResourceTransform::FinishedCallback cb) {
                 android::UniqueEnv _env = android::AttachEnv();
-                return FileSource::ResourceTransformCallback::onURL(*_env, *callback, int(kind), url_);
+                cb(FileSource::ResourceTransformCallback::onURL(*_env, *callback, int(kind), url_));
             });
-        fileSource->setResourceTransform(resourceTransform->self());
+        onlineSource->setResourceTransform(
+            {[actorRef = resourceTransform->self()](
+                 Resource::Kind kind, const std::string& url, ResourceTransform::FinishedCallback cb) {
+                actorRef.invoke(&ResourceTransform::TransformCallback::operator(), kind, url, std::move(cb));
+            }});
     } else {
         // Reset the callback
         resourceTransform.reset();
-        fileSource->setResourceTransform({});
+        onlineSource->setResourceTransform({});
     }
 }
 
-void FileSource::setResourceCachePath(jni::JNIEnv& env, const jni::String& path,
+void FileSource::setResourceCachePath(jni::JNIEnv& env,
+                                      const jni::String& path,
                                       const jni::Object<FileSource::ResourcesCachePathChangeCallback>& _callback) {
+    if (!databaseSource) {
+        ThrowNew(env, jni::FindClass(env, "java/lang/IllegalStateException"), "Offline functionality is disabled.");
+        return;
+    }
+
     if (pathChangeCallback) {
         FileSource::ResourcesCachePathChangeCallback::onError(env, _callback, jni::Make<jni::String>(env, "Another resources cache path change is in progress"));
         return;
@@ -93,33 +125,42 @@ void FileSource::setResourceCachePath(jni::JNIEnv& env, const jni::String& path,
     mapbox::sqlite::setTempPath(newPath);
 
     auto global = jni::NewGlobal<jni::EnvAttachingDeleter>(env, _callback);
-    pathChangeCallback = std::make_unique<Actor<PathChangeCallback>>(*Scheduler::GetCurrent(),
-            [this, callback = std::make_shared<decltype(global)>(std::move(global)), newPath] {
-                android::UniqueEnv _env = android::AttachEnv();
-                FileSource::ResourcesCachePathChangeCallback::onSuccess(*_env, *callback, jni::Make<jni::String>(*_env, newPath));
-                pathChangeCallback.reset();
-            });
+    pathChangeCallback = Scheduler::GetCurrent()->bindOnce(
+        [this, callback = std::make_shared<decltype(global)>(std::move(global)), newPath] {
+            android::UniqueEnv _env = android::AttachEnv();
+            FileSource::ResourcesCachePathChangeCallback::onSuccess(
+                *_env, *callback, jni::Make<jni::String>(*_env, newPath));
+            pathChangeCallback = {};
+        });
 
-    fileSource->setResourceCachePath(newPath + DATABASE_FILE, pathChangeCallback->self());
+    databaseSource->setDatabasePath(newPath + DATABASE_FILE, pathChangeCallback);
 }
 
 void FileSource::resume(jni::JNIEnv&) {
+    if (!resourceLoader) {
+        return;
+    }
+
     if (!activationCounter) {
         activationCounter = optional<int>(1) ;
         return;
     }
 
     activationCounter.value()++;
     if (activationCounter == 1) {
-        fileSource->resume();
+        resourceLoader->resume();
     }
 }
 
 void FileSource::pause(jni::JNIEnv&) {
+    if (!resourceLoader) {
+        return;
+    }
+
     if (activationCounter) {
         activationCounter.value()--;
         if (activationCounter == 0) {
-            fileSource->pause();
+            resourceLoader->pause();
         }
     }
 }
@@ -137,10 +178,15 @@ FileSource* FileSource::getNativePeer(jni::JNIEnv& env, const jni::Object<FileSo
     return reinterpret_cast<FileSource *>(jFileSource.Get(env, field));
 }
 
-mbgl::ResourceOptions FileSource::getSharedResourceOptions(jni::JNIEnv& env, const jni::Object<FileSource>& jFileSource) {
+mbgl::ResourceOptions FileSource::getSharedResourceOptions(jni::JNIEnv& env,
+                                                           const jni::Object<FileSource>& jFileSource) {
     FileSource* fileSource = FileSource::getNativePeer(env, jFileSource);
-    assert(fileSource != nullptr);
-    return fileSource->resourceOptions.clone();
+    // Core could be compiled without support for any sources.
+    if (fileSource) {
+        return fileSource->resourceOptions.clone();
+    }
+
+    return {};
 }
 
 // FileSource::ResourcesCachePathChangeCallback //

platform/android/src/file_source.hpp

@@ -1,7 +1,9 @@
 #pragma once
 
-#include <mbgl/storage/default_file_source.hpp>
+#include <mbgl/storage/database_file_source.hpp>
+#include <mbgl/storage/online_file_source.hpp>
 #include <mbgl/storage/resource_options.hpp>
+#include <mbgl/storage/resource_transform.hpp>
 
 #include "asset_manager.hpp"
 
@@ -10,13 +12,12 @@
 namespace mbgl {
 
 template <typename T> class Actor;
-class ResourceTransform;
-using mbgl::PathChangeCallback;
 
 namespace android {
 
 /**
- * Peer class for the Android FileSource holder. Ensures that a single DefaultFileSource is used
+ * Peer class for the Android FileSource holder. Ensures that a single core FileSource
+ * of a ResourceLoader type is used.
  */
 class FileSource {
 public:
@@ -71,11 +72,12 @@ class FileSource {
     const std::string DATABASE_FILE = "/mbgl-offline.db";
     optional<int> activationCounter;
     mbgl::ResourceOptions resourceOptions;
-    std::unique_ptr<Actor<ResourceTransform>> resourceTransform;
-    std::unique_ptr<Actor<PathChangeCallback>> pathChangeCallback;
-    std::shared_ptr<mbgl::DefaultFileSource> fileSource;
+    std::unique_ptr<Actor<ResourceTransform::TransformCallback>> resourceTransform;
+    std::function<void()> pathChangeCallback;
+    std::shared_ptr<mbgl::DatabaseFileSource> databaseSource;
+    std::shared_ptr<mbgl::OnlineFileSource> onlineSource;
+    std::shared_ptr<mbgl::FileSource> resourceLoader;
 };
 
-
 } // namespace android
 } // namespace mbgl

platform/android/src/http_file_source.cpp

@@ -3,10 +3,11 @@
 #include <mbgl/storage/response.hpp>
 #include <mbgl/util/logging.hpp>
 
+#include <mbgl/util/async_request.hpp>
 #include <mbgl/util/async_task.hpp>
-#include <mbgl/util/util.hpp>
-#include <mbgl/util/string.hpp>
 #include <mbgl/util/http_header.hpp>
+#include <mbgl/util/string.hpp>
+#include <mbgl/util/util.hpp>
 
 #include <jni/jni.hpp>
 #include "attach_env.hpp"

platform/android/src/jni_native.cpp

@@ -66,7 +66,7 @@ void registerNatives(JavaVM *vm) {
 
     jni::JNIEnv& env = jni::GetEnv(*vm, jni::jni_version_1_6);
 
-    // For the DefaultFileSource
+    // For the FileSource
     static mbgl::util::RunLoop mainRunLoop;
     FileSource::registerNative(env);
 

platform/android/src/offline/offline_manager.cpp

@@ -1,5 +1,7 @@
 #include "offline_manager.hpp"
 
+#include <mbgl/storage/file_source_manager.hpp>
+#include <mbgl/storage/resource.hpp>
 #include <mbgl/util/string.hpp>
 
 #include "../attach_env.hpp"
@@ -10,7 +12,12 @@ namespace android {
 // OfflineManager //
 
 OfflineManager::OfflineManager(jni::JNIEnv& env, const jni::Object<FileSource>& jFileSource)
-    : fileSource(std::static_pointer_cast<DefaultFileSource>(mbgl::FileSource::getSharedFileSource(FileSource::getSharedResourceOptions(env, jFileSource)))) {}
+    : fileSource(std::static_pointer_cast<mbgl::DatabaseFileSource>(mbgl::FileSourceManager::get()->getFileSource(
+          mbgl::FileSourceType::Database, FileSource::getSharedResourceOptions(env, jFileSource)))) {
+    if (!fileSource) {
+        ThrowNew(env, jni::FindClass(env, "java/lang/IllegalStateException"), "Offline functionality is disabled.");
+    }
+}
 
 OfflineManager::~OfflineManager() {}
 

platform/android/src/offline/offline_manager.hpp

@@ -12,8 +12,6 @@
 
 namespace mbgl {
 
-class DefaultFileSource;
-
 namespace android {
 
 class OfflineManager {
@@ -102,7 +100,7 @@ class OfflineManager {
     void setMaximumAmbientCacheSize(jni::JNIEnv&, const jni::jlong size, const jni::Object<FileSourceCallback>& callback_);
 
 private:
-    std::shared_ptr<mbgl::DefaultFileSource> fileSource;
+    std::shared_ptr<mbgl::DatabaseFileSource> fileSource;
 };
 
 } // namespace android