[WIP] Update examples/placeholder to supports an interactive websocke…

…t mode

examples/placeholder/linux/AppOptions.cpp

@@ -23,8 +23,12 @@ using chip::ArgParser::OptionSet;
 using chip::ArgParser::PrintArgError;
 
 constexpr uint16_t kOptionDacProviderFilePath = 0xFF01;
+constexpr uint16_t kOptionInteractiveMode     = 0xFF02;
+constexpr uint16_t kOptionInteractiveModePort = 0xFF03;
 
 static chip::Credentials::Examples::TestHarnessDACProvider mDacProvider;
+static bool gInteractiveMode = false;
+static chip::Optional<uint16_t> gInteractiveModePort;
 
 bool AppOptions::HandleOptions(const char * program, OptionSet * options, int identifier, const char * name, const char * value)
 {
@@ -34,6 +38,12 @@ bool AppOptions::HandleOptions(const char * program, OptionSet * options, int id
     case kOptionDacProviderFilePath:
         mDacProvider.Init(value);
         break;
+    case kOptionInteractiveMode:
+        gInteractiveMode = true;
+        break;
+    case kOptionInteractiveModePort:
+        gInteractiveModePort = chip::Optional<uint16_t>(static_cast<uint16_t>(atoi(value)));
+        break;
     default:
         PrintArgError("%s: INTERNAL ERROR: Unhandled option: %s\n", program, name);
         retval = false;
@@ -47,13 +57,19 @@ OptionSet * AppOptions::GetOptions()
 {
     static OptionDef optionsDef[] = {
         { "dac_provider", chip::ArgParser::kArgumentRequired, kOptionDacProviderFilePath },
+        { "interactive", chip::ArgParser::kNoArgument, kOptionInteractiveMode },
+        { "port", chip::ArgParser::kArgumentRequired, kOptionInteractiveModePort },
         {},
     };
 
     static OptionSet options = {
         AppOptions::HandleOptions, optionsDef, "PROGRAM OPTIONS",
         "  --dac_provider <filepath>\n"
         "       A json file with data used by the example dac provider to validate device attestation procedure.\n"
+        "  --interactive\n"
+        "       Enable server interactive mode.\n"
+        "  --port <port>\n"
+        "       Specify the listening port for the server interactive mode.\n"
     };
 
     return &options;
@@ -63,3 +79,13 @@ chip::Credentials::DeviceAttestationCredentialsProvider * AppOptions::GetDACProv
 {
     return &mDacProvider;
 }
+
+bool AppOptions::GetInteractiveMode()
+{
+    return gInteractiveMode;
+}
+
+chip::Optional<uint16_t> AppOptions::GetInteractiveModePort()
+{
+    return gInteractiveModePort;
+}

examples/placeholder/linux/AppOptions.h

@@ -27,6 +27,8 @@ class AppOptions
 public:
     static chip::ArgParser::OptionSet * GetOptions();
     static chip::Credentials::DeviceAttestationCredentialsProvider * GetDACProvider();
+    static bool GetInteractiveMode();
+    static chip::Optional<uint16_t> GetInteractiveModePort();
 
 private:
     static bool HandleOptions(const char * program, chip::ArgParser::OptionSet * options, int identifier, const char * name,

examples/placeholder/linux/BUILD.gn

@@ -31,20 +31,23 @@ chip_data_model("configuration") {
 config("includes") {
   include_dirs = [
     ".",
+    "${chip_root}/examples/common",
     "include",
   ]
 }
 
 executable("chip-${chip_tests_zap_config}") {
   sources = [
     "AppOptions.cpp",
+    "InteractiveServer.cpp",
     "main.cpp",
     "src/bridged-actions-stub.cpp",
     "static-supported-modes-manager.cpp",
   ]
 
   deps = [
     ":configuration",
+    "${chip_root}/examples/common/websocket-server",
     "${chip_root}/examples/platform/linux:app-main",
     "${chip_root}/src/app/tests/suites/commands/delay",
     "${chip_root}/src/app/tests/suites/commands/discovery",
@@ -54,9 +57,10 @@ executable("chip-${chip_tests_zap_config}") {
     "${chip_root}/src/lib",
     "${chip_root}/src/lib/support:testing",  # For sleepMillis. TODO: this is
                                              # odd and should be fixed
+    "${chip_root}/third_party/jsoncpp",
   ]
 
-  include_dirs = [ "include" ]
+  public_configs = [ ":includes" ]
 
   cflags = [ "-Wconversion" ]
 

examples/placeholder/linux/InteractiveServer.cpp

@@ -0,0 +1,145 @@
+/*
+ *
+ *    Copyright (c) 2023 Project CHIP Authors
+ *    All rights reserved.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#include "InteractiveServer.h"
+
+#include <json/json.h>
+#include <platform/CHIPDeviceLayer.h>
+
+using namespace chip::DeviceLayer;
+
+namespace {
+constexpr const char * kClusterIdKey                = "clusterId";
+constexpr const char * kEndpointIdKey               = "endpointId";
+constexpr const char * kAttributeIdKey              = "attributeId";
+constexpr const char * kWaitTypeKey                 = "waitType";
+constexpr const char * kAttributeWriteKey           = "writeAttribute";
+constexpr const char * kAttributeReadKey            = "readAttribute";
+constexpr const char * kCommandIdKey                = "commandId";
+constexpr const char * kWaitForCommissioningCommand = "WaitForCommissioning";
+
+std::string JsonToString(Json::Value & json)
+{
+    Json::FastWriter writer;
+    writer.omitEndingLineFeed();
+    return writer.write(json);
+}
+
+void OnPlatformEvent(const ChipDeviceEvent * event, intptr_t arg);
+
+void OnCommissioningComplete(intptr_t context)
+{
+    PlatformMgr().RemoveEventHandler(OnPlatformEvent);
+    InteractiveServer::GetInstance().CommissioningComplete();
+}
+
+void OnPlatformEvent(const ChipDeviceEvent * event, intptr_t arg)
+{
+    switch (event->Type)
+    {
+    case DeviceEventType::kCommissioningComplete:
+        PlatformMgr().ScheduleWork(OnCommissioningComplete, arg);
+        break;
+    }
+}
+} // namespace
+
+InteractiveServer * InteractiveServer::instance = nullptr;
+InteractiveServer & InteractiveServer::GetInstance()
+{
+    if (instance == nullptr)
+    {
+        instance = new InteractiveServer();
+    }
+    return *instance;
+}
+
+void InteractiveServer::Run(const chip::Optional<uint16_t> port)
+{
+    mIsReady = false;
+    wsThread = std::thread(&WebSocketServer::Run, &mWebSocketServer, port, this);
+}
+
+bool InteractiveServer::OnWebSocketMessageReceived(char * msg)
+{
+    ChipLogError(chipTool, "Receive message: %s", msg);
+    if (strcmp(msg, kWaitForCommissioningCommand) == 0)
+    {
+        mIsReady = false;
+        PlatformMgr().AddEventHandler(OnPlatformEvent);
+    }
+    else
+    {
+        mIsReady = true;
+    }
+    return true;
+}
+
+bool InteractiveServer::Command(const chip::app::ConcreteCommandPath & path)
+{
+    VerifyOrReturnValue(mIsReady, false);
+
+    Json::Value value;
+    value[kClusterIdKey]  = path.mClusterId;
+    value[kEndpointIdKey] = path.mEndpointId;
+    value[kCommandIdKey]  = path.mCommandId;
+
+    auto valueStr = JsonToString(value);
+    LogErrorOnFailure(mWebSocketServer.Send(valueStr.c_str()));
+    return mIsReady;
+}
+
+bool InteractiveServer::ReadAttribute(const chip::app::ConcreteAttributePath & path)
+{
+    VerifyOrReturnValue(mIsReady, false);
+
+    Json::Value value;
+    value[kClusterIdKey]   = path.mClusterId;
+    value[kEndpointIdKey]  = path.mEndpointId;
+    value[kAttributeIdKey] = path.mAttributeId;
+    value[kWaitTypeKey]    = kAttributeReadKey;
+
+    auto valueStr = JsonToString(value);
+    LogErrorOnFailure(mWebSocketServer.Send(valueStr.c_str()));
+    return mIsReady;
+}
+
+bool InteractiveServer::WriteAttribute(const chip::app::ConcreteAttributePath & path)
+{
+    VerifyOrReturnValue(mIsReady, false);
+
+    Json::Value value;
+    value[kClusterIdKey]   = path.mClusterId;
+    value[kEndpointIdKey]  = path.mEndpointId;
+    value[kAttributeIdKey] = path.mAttributeId;
+    value[kWaitTypeKey]    = kAttributeWriteKey;
+
+    auto valueStr = JsonToString(value);
+    LogErrorOnFailure(mWebSocketServer.Send(valueStr.c_str()));
+    return mIsReady;
+}
+
+void InteractiveServer::CommissioningComplete()
+{
+    VerifyOrReturn(!mIsReady);
+    mIsReady = true;
+
+    Json::Value value = Json::objectValue;
+    auto valueStr     = JsonToString(value);
+    LogErrorOnFailure(mWebSocketServer.Send(valueStr.c_str()));
+}

examples/placeholder/linux/include/InteractiveServer.h

@@ -0,0 +1,47 @@
+/*
+ *
+ *    Copyright (c) 2023 Project CHIP Authors
+ *    All rights reserved.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#pragma once
+
+#include <app/ConcreteAttributePath.h>
+#include <app/ConcreteCommandPath.h>
+#include <thread>
+#include <websocket-server/WebSocketServer.h>
+
+class InteractiveServer : public WebSocketServerDelegate
+{
+public:
+    static InteractiveServer & GetInstance();
+    void Run(const chip::Optional<uint16_t> port);
+
+    bool Command(const chip::app::ConcreteCommandPath & path);
+    bool ReadAttribute(const chip::app::ConcreteAttributePath & path);
+    bool WriteAttribute(const chip::app::ConcreteAttributePath & path);
+    void CommissioningComplete();
+
+    /////////// WebSocketServerDelegate Interface /////////
+    bool OnWebSocketMessageReceived(char * msg) override;
+
+private:
+    InteractiveServer(){};
+    static InteractiveServer * instance;
+
+    WebSocketServer mWebSocketServer;
+    std::thread wsThread;
+    bool mIsReady;
+};

examples/placeholder/linux/include/MatterCallbacks.h

@@ -18,6 +18,7 @@
 
 #pragma once
 
+#include "InteractiveServer.h"
 #include "Options.h"
 
 #include <app/ConcreteAttributePath.h>
@@ -55,6 +56,8 @@ TestCommand * GetTargetTest()
 void MatterPostCommandReceivedCallback(const chip::app::ConcreteCommandPath & commandPath,
                                        const chip::Access::SubjectDescriptor & subjectDescriptor)
 {
+    VerifyOrReturn(!InteractiveServer::GetInstance().Command(commandPath));
+
     auto test = GetTargetTest();
     VerifyOrReturn(test != nullptr && test->isRunning);
 
@@ -66,6 +69,8 @@ void MatterPostCommandReceivedCallback(const chip::app::ConcreteCommandPath & co
 
 void MatterPostAttributeReadCallback(const chip::app::ConcreteAttributePath & attributePath)
 {
+    VerifyOrReturn(!InteractiveServer::GetInstance().ReadAttribute(attributePath));
+
     auto test = GetTargetTest();
     VerifyOrReturn(test != nullptr && test->isRunning);
 
@@ -77,6 +82,8 @@ void MatterPostAttributeReadCallback(const chip::app::ConcreteAttributePath & at
 
 void MatterPostAttributeWriteCallback(const chip::app::ConcreteAttributePath & attributePath)
 {
+    VerifyOrReturn(!InteractiveServer::GetInstance().WriteAttribute(attributePath));
+
     auto test = GetTargetTest();
     VerifyOrReturn(test != nullptr && test->isRunning);
 

examples/placeholder/linux/main.cpp

@@ -33,6 +33,13 @@ int main(int argc, char * argv[])
     }
 
     LinuxDeviceOptions::GetInstance().dacProvider = AppOptions::GetDACProvider();
+
+    auto & server = InteractiveServer::GetInstance();
+    if (AppOptions::GetInteractiveMode())
+    {
+        server.Run(AppOptions::GetInteractiveModePort());
+    }
+
     ChipLinuxAppMainLoop();
     return 0;
 }