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| 1 // Copyright (c) 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include <stdio.h> |
| 6 |
| 7 #include "base/bind.h" |
| 8 #include "base/threading/thread.h" |
| 9 #include "mojo/embedder/channel_init.h" |
| 10 #include "mojo/embedder/embedder.h" |
| 11 #include "mojo/embedder/platform_support.h" |
| 12 #include "mojo/examples/echo/echo_service.mojom.h" |
| 13 #include "mojo/public/cpp/utility/run_loop.h" |
| 14 #include "mojo/public/interfaces/application/service_provider.mojom.h" |
| 15 #include "ppapi/c/ppb_mojo.h" |
| 16 #include "ppapi/cpp/instance.h" |
| 17 #include "ppapi/cpp/module.h" |
| 18 #include "ppapi/utility/completion_callback_factory.h" |
| 19 |
| 20 class ResponsePrinter { |
| 21 public: |
| 22 void Run(const mojo::String& value) const { |
| 23 fprintf(stderr, "Response: \"%s\"\n", value.get().c_str()); |
| 24 |
| 25 // TODO(teravest): Remove this. |
| 26 mojo::RunLoop::current()->Quit(); |
| 27 } |
| 28 }; |
| 29 |
| 30 class ServiceRegistryImpl : public mojo::InterfaceImpl<mojo::ServiceProvider> { |
| 31 public: |
| 32 ServiceRegistryImpl(mojo::ScopedMessagePipeHandle handle) { |
| 33 BindRemoteServiceProvider(handle.Pass()); |
| 34 } |
| 35 |
| 36 void BindRemoteServiceProvider(mojo::ScopedMessagePipeHandle handle) { |
| 37 mojo::WeakBindToPipe(this, handle.Pass()); |
| 38 } |
| 39 |
| 40 void ConnectToRemoteService(const std::string& service_name, |
| 41 mojo::ScopedMessagePipeHandle handle) { |
| 42 client()->ConnectToService(mojo::String::From(service_name), handle.Pass()); |
| 43 } |
| 44 |
| 45 virtual void ConnectToService(const mojo::String& service_name, |
| 46 mojo::ScopedMessagePipeHandle handle) { |
| 47 NOTREACHED(); |
| 48 } |
| 49 |
| 50 void AddService( |
| 51 const std::string& service_name, |
| 52 const base::Callback< |
| 53 void(mojo::ScopedMessagePipeHandle)> service_factory) { |
| 54 NOTREACHED(); |
| 55 } |
| 56 }; |
| 57 |
| 58 class MyInstance : public pp::Instance { |
| 59 public: |
| 60 explicit MyInstance(PP_Instance instance) |
| 61 : pp::Instance(instance), |
| 62 io_thread_("io thread"), |
| 63 callback_factory_(this) { |
| 64 } |
| 65 |
| 66 virtual ~MyInstance() {} |
| 67 |
| 68 virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]) { |
| 69 mojo_ = reinterpret_cast<const PPB_Mojo*>( |
| 70 pp::Module::Get()->GetBrowserInterface(PPB_MOJO_INTERFACE)); |
| 71 |
| 72 mojo::embedder::Init(scoped_ptr<mojo::embedder::PlatformSupport>()); |
| 73 if (!mojo_) |
| 74 return false; |
| 75 |
| 76 pp::CompletionCallback cc = callback_factory_.NewCallback( |
| 77 &MyInstance::HandleReceived); |
| 78 int32_t rc = mojo_->GetHandle( |
| 79 pp_instance(), |
| 80 &raw_mojo_handle_, |
| 81 cc.pp_completion_callback()); |
| 82 return rc == PP_OK_COMPLETIONPENDING; |
| 83 } |
| 84 |
| 85 void HandleReceived(int32_t hmm) { |
| 86 base::Thread::Options opts(base::MessageLoop::TYPE_IO, 0); |
| 87 io_thread_.StartWithOptions(opts); |
| 88 |
| 89 base::PlatformFile handle = raw_mojo_handle_; |
| 90 mojo::ScopedMessagePipeHandle message_pipe = |
| 91 channel_init_.Init(handle, |
| 92 io_thread_.message_loop()->task_runner()); |
| 93 service_registry_.reset(new ServiceRegistryImpl(message_pipe.Pass())); |
| 94 |
| 95 mojo::MessagePipe pipe; |
| 96 echo_service_.Bind(pipe.handle0.Pass()); |
| 97 service_registry_->ConnectToRemoteService("mojo::examples::EchoService", |
| 98 pipe.handle1.Pass()); |
| 99 |
| 100 echo_service_->EchoString("test", ResponsePrinter()); |
| 101 |
| 102 // TODO(teravest): Do we need to construct a RunLoop and call Run() at all? |
| 103 // This doesn't seem to happen for MojoApplication where it's used in the |
| 104 // renderer, but Environment and RunLoop seem to be necessary to make |
| 105 // things work. |
| 106 loop_.Run(); |
| 107 } |
| 108 |
| 109 private: |
| 110 const PPB_Mojo* mojo_; |
| 111 uint32_t raw_mojo_handle_; |
| 112 |
| 113 base::Thread io_thread_; |
| 114 |
| 115 scoped_ptr<ServiceRegistryImpl> service_registry_; |
| 116 |
| 117 mojo::embedder::ChannelInit channel_init_; |
| 118 |
| 119 mojo::examples::EchoServicePtr echo_service_; |
| 120 mojo::Environment environment_; |
| 121 mojo::RunLoop loop_; |
| 122 |
| 123 pp::CompletionCallbackFactory<MyInstance> callback_factory_; |
| 124 }; |
| 125 |
| 126 |
| 127 // This object is the global object representing this plugin library as long |
| 128 // as it is loaded. |
| 129 class MyModule : public pp::Module { |
| 130 public: |
| 131 MyModule() : pp::Module() {} |
| 132 virtual ~MyModule() {} |
| 133 |
| 134 // Override CreateInstance to create your customized Instance object. |
| 135 virtual pp::Instance* CreateInstance(PP_Instance instance) { |
| 136 return new MyInstance(instance); |
| 137 } |
| 138 }; |
| 139 |
| 140 namespace pp { |
| 141 |
| 142 // Factory function for your specialization of the Module object. |
| 143 Module* CreateModule() { |
| 144 return new MyModule(); |
| 145 } |
| 146 |
| 147 } // namespace pp |
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