Add HarCaptureAdapter class (#1591)

Implement HarCaptureAdapter to capture network requests and generate
HAR files. It is capable to capture network requests along with
headers, status codes, transfer sizes and timings.

Relates-To: OCMAM-418

Signed-off-by: Mykhailo Kuchma <ext-mykhailo.kuchma@here.com>

Author: mykhailo-kuchma

olp-cpp-sdk-core/CMakeLists.txt

@@ -104,6 +104,7 @@ set(OLP_SDK_GENERATED_HEADERS
 )
 
 set(OLP_SDK_HTTP_HEADERS
+    ./include/olp/core/http/adapters/HarCaptureAdapter.h
     ./include/olp/core/http/CertificateSettings.h
     ./include/olp/core/http/HttpStatusCode.h
     ./include/olp/core/http/Network.h
@@ -288,6 +289,7 @@ set(OLP_SDK_CLIENT_SOURCES
 )
 
 set(OLP_SDK_HTTP_SOURCES
+    ./src/http/adapters/HarCaptureAdapter.cpp
     ./src/http/DefaultNetwork.cpp
     ./src/http/DefaultNetwork.h
     ./src/http/Network.cpp

olp-cpp-sdk-core/include/olp/core/http/adapters/HarCaptureAdapter.h

@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2025 HERE Europe B.V.
+ *
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * License-Filename: LICENSE
+ */
+
+#pragma once
+
+#include <string>
+#include <memory>
+
+#include <olp/core/CoreApi.h>
+#include <olp/core/http/Network.h>
+
+namespace olp {
+namespace http {
+
+/**
+ * @class HarCaptureAdapter
+ * @brief A network adapter that captures HTTP requests and responses,
+ * generating a HAR (HTTP Archive) file.
+ *
+ * HarCaptureAdapter implements the olp::http::Network interface, intercepting
+ * network traffic for debugging, logging, and analysis. It records request
+ * metadata, headers, and response details, allowing developers to
+ * inspect network interactions in HAR format.
+ *
+ * @note Request timings are only available when Curl is used.
+ * @note The HAR file is produced when the instance is destroyed.
+ *
+ * Features:
+ * - Captures HTTP requests and responses.
+ * - Logs request/response details, including headers, status codes and timings.
+ * - Generates a HAR file for easy debugging and sharing.
+ *
+ * Example Usage:
+ * @code
+ * auto network = std::make_shared<HarCaptureAdapter>(network, "/tmp/out.har");
+ * @endcode
+ */
+class CORE_API HarCaptureAdapter final : public Network {
+ public:
+  /**
+   * @brief Constructs a HarCaptureAdapter instance.
+   *
+   * @param network The underlying network implementation to forward requests
+   * to.
+   * @param har_out_path The file path where the HAR (HTTP Archive) file will be
+   * saved.
+   */
+  HarCaptureAdapter(std::shared_ptr<Network> network, std::string har_out_path);
+
+  ~HarCaptureAdapter() override;
+
+  /**
+   * @copydoc Network::Send
+   */
+  SendOutcome Send(NetworkRequest request, Payload payload, Callback callback,
+                   HeaderCallback header_callback,
+                   DataCallback data_callback) override;
+
+  /**
+   * @copydoc Network::Cancel
+   */
+  void Cancel(RequestId id) override;
+
+ private:
+  class HarCaptureAdapterImpl;
+  std::shared_ptr<HarCaptureAdapterImpl> impl_;
+};
+
+}  // namespace http
+}  // namespace olp