tbtnavi: Add gRPC API support

This adds support for gRPC API specifically specifically to allow
placing the application on a different output, the remoting one.

Bug-AGL: SPEC-5003
Change-Id: Ibe7047b3b21dc67c44111a8b615a51588d2216d9
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>

5 files changed, 473 insertions, 4 deletions

diff --git a/app/AglShellGrpcClient.cpp b/app/AglShellGrpcClient.cpp
new file mode 100644
index 0000000..8577f16
--- /dev/null
+++ b/app/AglShellGrpcClient.cpp
@@ -0,0 +1,208 @@
+//include stuff here
+#include <cstdio>
+
+#include <mutex>
+#include <condition_variable>
+#include <chrono>
+#include <grpc/grpc.h>
+#include <grpcpp/grpcpp.h>
+#include <grpcpp/server.h>
+#include <grpcpp/server_builder.h>
+#include <grpcpp/server_context.h>
+
+#include <grpcpp/ext/proto_server_reflection_plugin.h>
+#include <grpcpp/health_check_service_interface.h>
+
+#include "AglShellGrpcClient.h"
+#include "agl_shell.grpc.pb.h"
+
+using namespace std::chrono;
+
+namespace {
+	const char kDefaultGrpcServiceAddress[] = "127.0.0.1:14005";
+}
+
+GrpcClient::GrpcClient()
+{
+	m_channel = grpc::CreateChannel(kDefaultGrpcServiceAddress,
+			grpc::InsecureChannelCredentials());
+
+	// init the stub here
+	m_stub = agl_shell_ipc::AglShellManagerService::NewStub(m_channel);
+	reader = new Reader(m_stub.get());
+}
+
+void
+GrpcClient::WaitForConnected(int wait_time_ms, int tries_timeout)
+{
+	struct timespec ts;
+	grpc_connectivity_state state;
+	int try_ = 0;
+
+	clock_gettime(CLOCK_MONOTONIC, &ts);
+	ts.tv_sec = 0;
+	ts.tv_nsec = 500 * 1000 * 1000; // 500ms
+
+	while (((state = m_channel->GetState(true)) != GRPC_CHANNEL_READY) && 
+		try_++ < tries_timeout) {
+		fprintf(stderr, "waiting for channel state to be ready, current state %d", state);
+		nanosleep(&ts, NULL);
+	}
+
+}
+
+
+bool
+GrpcClient::ActivateApp(const std::string& app_id, const std::string& output_name)
+{
+	agl_shell_ipc::ActivateRequest request;
+
+	request.set_app_id(app_id);
+	request.set_output_name(output_name);
+
+	grpc::ClientContext context;
+	::agl_shell_ipc::ActivateResponse reply;
+
+	grpc::Status status = m_stub->ActivateApp(&context, request, &reply);
+	return status.ok();
+}
+
+bool
+GrpcClient::DeactivateApp(const std::string& app_id)
+{
+	agl_shell_ipc::DeactivateRequest request;
+
+	request.set_app_id(app_id);
+
+	grpc::ClientContext context;
+	::agl_shell_ipc::DeactivateResponse reply;
+
+	grpc::Status status = m_stub->DeactivateApp(&context, request, &reply);
+	return status.ok();
+}
+
+bool
+GrpcClient::SetAppFloat(const std::string& app_id, int32_t x_pos, int32_t y_pos)
+{
+	agl_shell_ipc::FloatRequest request;
+
+	request.set_app_id(app_id);
+
+	request.set_x_pos(x_pos);
+	request.set_y_pos(y_pos);
+
+	grpc::ClientContext context;
+	::agl_shell_ipc::FloatResponse reply;
+
+	grpc::Status status = m_stub->SetAppFloat(&context, request, &reply);
+	return status.ok();
+}
+
+bool
+GrpcClient::SetAppNormal(const std::string& app_id)
+{
+	agl_shell_ipc::NormalRequest request;
+
+	request.set_app_id(app_id);
+
+	grpc::ClientContext context;
+	::agl_shell_ipc::NormalResponse reply;
+
+	grpc::Status status = m_stub->SetAppNormal(&context, request, &reply);
+	return status.ok();
+}
+
+bool
+GrpcClient::SetAppFullscreen(const std::string& app_id)
+{
+	agl_shell_ipc::FullscreenRequest request;
+
+	request.set_app_id(app_id);
+
+	grpc::ClientContext context;
+	::agl_shell_ipc::FullscreenResponse reply;
+
+	grpc::Status status = m_stub->SetAppFullscreen(&context, request, &reply);
+	return status.ok();
+}
+
+bool
+GrpcClient::SetAppOnOutput(const std::string& app_id, const std::string &output)
+{
+	agl_shell_ipc::AppOnOutputRequest request;
+
+	request.set_app_id(app_id);
+	request.set_output(output);
+
+	grpc::ClientContext context;
+	::agl_shell_ipc::AppOnOutputResponse reply;
+
+	grpc::Status status = m_stub->SetAppOnOutput(&context, request, &reply);
+	return status.ok();
+}
+
+bool
+GrpcClient::SetAppPosition(const std::string& app_id, int32_t x, int32_t y)
+{
+	agl_shell_ipc::AppPositionRequest request;
+
+	request.set_app_id(app_id);
+	request.set_x(x);
+	request.set_y(y);
+
+	grpc::ClientContext context;
+	::agl_shell_ipc::AppPositionResponse reply;
+
+	grpc::Status status = m_stub->SetAppPosition(&context, request, &reply);
+	return status.ok();
+}
+
+bool
+GrpcClient::SetAppScale(const std::string& app_id, int32_t width, int32_t height)
+{
+	agl_shell_ipc::AppScaleRequest request;
+
+	request.set_app_id(app_id);
+	request.set_width(width);
+	request.set_height(height);
+
+	grpc::ClientContext context;
+	::agl_shell_ipc::AppScaleResponse reply;
+
+	grpc::Status status = m_stub->SetAppScale(&context, request, &reply);
+	return status.ok();
+}
+
+
+grpc::Status
+GrpcClient::Wait(void)
+{
+	return reader->Await();
+}
+
+void
+GrpcClient::AppStatusState(Callback callback, void *data)
+{
+	reader->AppStatusState(callback, data);
+}
+
+std::vector<std::string>
+GrpcClient::GetOutputs()
+{
+	grpc::ClientContext context;
+	std::vector<std::string> v;
+
+	::agl_shell_ipc::OutputRequest request;
+	::agl_shell_ipc::ListOutputResponse response;
+
+	grpc::Status status = m_stub->GetOutputs(&context, request, &response);
+	if (!status.ok())
+		return std::vector<std::string>();
+
+	for (int i = 0; i < response.outputs_size(); i++) {
+		::agl_shell_ipc::OutputResponse rresponse = response.outputs(i);
+		v.push_back(rresponse.name());
+	}
+
+	return v;
+}
diff --git a/app/AglShellGrpcClient.h b/app/AglShellGrpcClient.h
new file mode 100644
index 0000000..19cfb75
--- /dev/null
+++ b/app/AglShellGrpcClient.h
@@ -0,0 +1,114 @@
+#pragma once
+
+#include <cstdio>
+
+#include <mutex>
+#include <condition_variable>
+#include <grpc/grpc.h>
+#include <grpcpp/grpcpp.h>
+#include <grpcpp/server.h>
+#include <grpcpp/server_builder.h>
+#include <grpcpp/server_context.h>
+
+#include <grpcpp/ext/proto_server_reflection_plugin.h>
+#include <grpcpp/health_check_service_interface.h>
+
+#include "agl_shell.grpc.pb.h"
+
+typedef void (*Callback)(agl_shell_ipc::AppStateResponse app_response, void *data);
+
+class Reader : public grpc::ClientReadReactor<::agl_shell_ipc::AppStateResponse> {
+public:
+	Reader(agl_shell_ipc::AglShellManagerService::Stub *stub)
+		: m_stub(stub)
+	{
+	}
+
+	void AppStatusState(Callback callback, void *_data)
+	{
+		::agl_shell_ipc::AppStateRequest request;
+
+		// set up the callback
+		m_callback = callback;
+		m_data = _data;
+		m_stub->async()->AppStatusState(&m_context, &request, this);
+
+		StartRead(&m_app_state);
+		StartCall();
+	}
+
+	void OnReadDone(bool ok) override
+	{
+		if (ok) {
+			m_callback(m_app_state, m_data);
+
+			// blocks in StartRead() if the server doesn't send
+			// antyhing
+			StartRead(&m_app_state);
+		}
+	}
+
+	void SetDone()
+	{
+		fprintf(stderr, "%s()\n", __func__);
+		std::unique_lock<std::mutex> l(m_mutex);
+		m_done = true;
+	}
+
+	void OnDone(const grpc::Status& s) override
+	{
+		fprintf(stderr, "%s()\n", __func__);
+		std::unique_lock<std::mutex> l(m_mutex);
+
+		m_status = s;
+
+		fprintf(stderr, "%s() done\n", __func__);
+		m_cv.notify_one();
+	}
+
+	grpc::Status Await()
+	{
+		std::unique_lock<std::mutex> l(m_mutex);
+
+		m_cv.wait(l, [this] { return m_done; });
+
+		return std::move(m_status);
+	}
+private:
+	grpc::ClientContext m_context;
+	::agl_shell_ipc::AppStateResponse m_app_state;
+	void *m_data;
+	agl_shell_ipc::AglShellManagerService::Stub *m_stub;
+
+	Callback m_callback;
+
+
+	std::mutex m_mutex;
+	std::condition_variable m_cv;
+	grpc::Status m_status;
+	bool m_done = false;
+};
+
+class GrpcClient {
+public:
+	GrpcClient();
+	void WaitForConnected(int wait_time_ms, int tries_timeout);
+	bool ActivateApp(const std::string& app_id, const std::string& output_name);
+	bool DeactivateApp(const std::string& app_id);
+	bool SetAppFloat(const std::string& app_id, int32_t x_pos, int32_t y_pos);
+	bool SetAppFullscreen(const std::string& app_id);
+	bool SetAppOnOutput(const std::string& app_id, const std::string& output);
+	bool SetAppNormal(const std::string& app_id);
+	bool SetAppPosition(const std::string& app_id, int32_t x, int32_t y);
+	bool SetAppScale(const std::string& app_id, int32_t width, int32_t height);
+	std::vector<std::string> GetOutputs();
+	void GetAppState();
+	void AppStatusState(Callback callback, void *data);
+	grpc::Status Wait();
+
+private:
+	Reader *reader;
+	std::unique_ptr<agl_shell_ipc::AglShellManagerService::Stub> m_stub;
+	std::shared_ptr<grpc::Channel> m_channel;
+};
+
diff --git a/app/main.cpp b/app/main.cpp
index 0b896b4..b3fd47a 100644
--- a/app/main.cpp
+++ b/app/main.cpp
@@ -14,10 +14,12 @@
 #include "qcheapruler.hpp"
 #include "file_operation.h"
 
+#include "AglShellGrpcClient.h"
+
 int main(int argc, char *argv[])
 {
-	QString graphic_role = QString("tbtnavi");
-	struct agl_shell_desktop *agl_shell_desktop = nullptr;
+	std::string our_name = "tbtnavi";
+	QString graphic_role = QString(our_name.c_str());
 
 	setenv("QT_QUICK_CONTROLS_STYLE", "AGL", 1);
 
@@ -28,6 +30,9 @@ int main(int argc, char *argv[])
 	QCoreApplication::setApplicationVersion("0.1.0");
 	app.setDesktopFileName(graphic_role);
 
+	GrpcClient *client = new GrpcClient();
+	client->SetAppOnOutput(our_name, "remoting-remote-1");
+
 	// Load qml
 	QQmlApplicationEngine engine;
 
diff --git a/app/meson.build b/app/meson.build
index 864edb7..a7d1e41 100644
--- a/app/meson.build
+++ b/app/meson.build
@@ -1,6 +1,33 @@
 cpp = meson.get_compiler('cpp')
 qt5_dep = dependency('qt5', modules: ['Qml', 'Quick', 'Gui', 'Location'])
 
+grpcpp_reflection_dep = cpp.find_library('grpc++_reflection')
+protoc = find_program('protoc')
+grpc_cpp = find_program('grpc_cpp_plugin')
+
+protoc_gen = generator(protoc, \
+                       output : ['@BASENAME@.pb.cc', '@BASENAME@.pb.h'],
+                       arguments : ['--proto_path=@CURRENT_SOURCE_DIR@/protocol',
+                         '--cpp_out=@BUILD_DIR@',
+                         '@INPUT@'])
+
+generated_protoc_sources = protoc_gen.process('protocol/agl_shell.proto')
+
+grpc_gen = generator(protoc, \
+                     output : ['@BASENAME@.grpc.pb.cc', '@BASENAME@.grpc.pb.h'],
+                     arguments : ['--proto_path=@CURRENT_SOURCE_DIR@/protocol',
+                       '--grpc_out=@BUILD_DIR@',
+                       '--plugin=protoc-gen-grpc=' + grpc_cpp.path(),
+                       '@INPUT@'])
+generated_grpc_sources = grpc_gen.process('protocol/agl_shell.proto')
+
+grpc_deps = [
+    dependency('protobuf'),
+    dependency('grpc'),
+    dependency('grpc++'),
+    grpcpp_reflection_dep,
+]
+
 dep_qtappfw = [
     dependency('qtappfw-navigation'),
     dependency('qtappfw-vehicle-signals'),
@@ -9,12 +36,14 @@ dep_qtappfw = [
 tbtnavi_dep = [
   qt5_dep,
   dep_qtappfw,
+  grpc_deps
 ]
 
 tbtnavi_headers = [
   'qcheapruler.hpp',
   'navigation_client.h',
-  'file_operation.h'
+  'file_operation.h',
+  'AglShellGrpcClient.h'
 ]
 
 moc_files = qt5.compile_moc(headers: tbtnavi_headers,
@@ -31,7 +60,10 @@ tbtnavi_src = [
   'main.cpp',
   'navigation_client.cpp',
   'qcheapruler.cpp',
-  'file_operation.cpp'
+  'file_operation.cpp',
+  'AglShellGrpcClient.cpp',
+  generated_protoc_sources,
+  generated_grpc_sources,
 ]
 
 executable('tbtnavi', tbtnavi_src, resource_files, moc_files,
diff --git a/app/protocol/agl_shell.proto b/app/protocol/agl_shell.proto
new file mode 100644
index 0000000..c4f3dfe
--- /dev/null
+++ b/app/protocol/agl_shell.proto
@@ -0,0 +1,110 @@
+syntax = "proto3";
+// using empty Response suitable better for forward compat
+//import "google/protobuf/empty.proto";
+package agl_shell_ipc;
+
+service AglShellManagerService {
+       rpc ActivateApp(ActivateRequest)			returns (ActivateResponse) {}
+       rpc DeactivateApp(DeactivateRequest)		returns (DeactivateResponse) {}
+       rpc SetAppSplit(SplitRequest)			returns (SplitResponse) {}
+       rpc SetAppFloat(FloatRequest)			returns (FloatResponse) {}
+       rpc SetAppFullscreen(FullscreenRequest)		returns (FullscreenResponse) {}
+       rpc AppStatusState(AppStateRequest)		returns (stream AppStateResponse) {}
+       rpc GetOutputs(OutputRequest)			returns (ListOutputResponse) {}
+       rpc SetAppNormal(NormalRequest)			returns (NormalResponse) {}
+       rpc SetAppOnOutput(AppOnOutputRequest)		returns (AppOnOutputResponse) {}
+       rpc SetAppPosition(AppPositionRequest)		returns (AppPositionResponse) {}
+       rpc SetAppScale(AppScaleRequest)			returns (AppScaleResponse) {}
+}
+
+message ActivateRequest {
+       string app_id = 1;
+       string output_name = 2;
+}
+
+message ActivateResponse {
+};
+
+
+message DeactivateRequest {
+       string app_id = 1;
+}
+
+message DeactivateResponse {
+}
+
+message SplitRequest {
+       string app_id = 1;
+       int32 tile_orientation = 2;
+}
+
+message SplitResponse {
+}
+
+message FloatRequest {
+       string app_id = 1;
+       int32 x_pos = 2;
+       int32 y_pos = 3;
+}
+
+message FloatResponse {
+}
+
+message AppStateRequest {
+}
+
+message AppStateResponse {
+	int32 state = 1;
+	string app_id = 2;
+}
+
+message OutputRequest {
+};
+
+message OutputResponse {
+	string name = 1;
+};
+
+message ListOutputResponse {
+	repeated OutputResponse outputs = 1;
+};
+
+message NormalRequest {
+	string app_id = 1;
+};
+
+message NormalResponse {
+};
+
+message FullscreenRequest {
+	string app_id = 1;
+};
+
+message FullscreenResponse {
+};
+
+message AppOnOutputRequest {
+	string app_id = 1;
+	string output = 2;
+};
+
+message AppOnOutputResponse {
+};
+
+message AppPositionRequest {
+       string app_id = 1;
+       int32 x = 2;
+       int32 y = 3;
+};
+
+message AppPositionResponse {
+};
+
+message AppScaleRequest {
+       string app_id = 1;
+       int32 width = 2;
+       int32 height = 3;
+};
+
+message AppScaleResponse {
+};