1 files changed, 162 insertions, 0 deletions
diff --git a/src/lib/config/cmd_http_listener.cc b/src/lib/config/cmd_http_listener.cc
new file mode 100644
index 0000000..7e031a6
--- /dev/null
+++ b/src/lib/config/cmd_http_listener.cc
@@ -0,0 +1,162 @@
+// Copyright (C) 2021-2022 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+#include <asiolink/asio_wrapper.h>
+#include <asiolink/io_address.h>
+#include <asiolink/io_error.h>
+#include <asiolink/io_service.h>
+#include <cmd_http_listener.h>
+#include <cmd_response_creator_factory.h>
+#include <config_log.h>
+#include <config/timeouts.h>
+#include <util/multi_threading_mgr.h>
+
+#include <boost/pointer_cast.hpp>
+
+using namespace isc::asiolink;
+using namespace isc::config;
+using namespace isc::data;
+using namespace isc::http;
+using namespace isc::util;
+
+namespace isc {
+namespace config {
+
+CmdHttpListener::CmdHttpListener(const IOAddress& address, const uint16_t port,
+                                 const uint16_t thread_pool_size /* = 1 */,
+                                 TlsContextPtr context /* = () */)
+    : address_(address), port_(port), thread_io_service_(), http_listener_(),
+      thread_pool_size_(thread_pool_size), thread_pool_(),
+      tls_context_(context) {
+}
+
+CmdHttpListener::~CmdHttpListener() {
+    stop();
+}
+
+void
+CmdHttpListener::start() {
+    // We must be in multi-threading mode.
+    if (!MultiThreadingMgr::instance().getMode()) {
+        isc_throw(InvalidOperation, "CmdHttpListener cannot be started"
+                  " when multi-threading is disabled");
+    }
+
+    // Punt if we're already started.
+    if (!isStopped()) {
+        isc_throw(InvalidOperation, "CmdHttpListener already started!");
+    }
+
+    try {
+        // Create a new IOService.
+        thread_io_service_.reset(new IOService());
+
+        // Create the response creator factory first. It will be used to
+        // generate response creators. Each response creator will be
+        // used to generate the answer to specific request.
+        HttpResponseCreatorFactoryPtr rcf(new CmdResponseCreatorFactory());
+
+        // Create the HTTP listener. It will open up a TCP socket and be
+        // prepared to accept incoming connections.
+        http_listener_.reset(new HttpListener(*thread_io_service_, address_,
+                                              port_, tls_context_, rcf,
+                                              HttpListener::RequestTimeout(TIMEOUT_AGENT_RECEIVE_COMMAND),
+                                              HttpListener::IdleTimeout(TIMEOUT_AGENT_IDLE_CONNECTION_TIMEOUT)));
+
+        // Create the thread pool with immediate start.
+        thread_pool_.reset(new HttpThreadPool(thread_io_service_, thread_pool_size_));
+
+        // Instruct the HTTP listener to actually open socket, install
+        // callback and start listening.
+        http_listener_->start();
+
+        // OK, seems like we're good to go.
+        LOG_DEBUG(command_logger, DBG_COMMAND, COMMAND_HTTP_LISTENER_STARTED)
+            .arg(thread_pool_size_)
+            .arg(address_)
+            .arg(port_)
+            .arg(tls_context_ ? "true" : "false");
+    } catch (const std::exception& ex) {
+        isc_throw(Unexpected, "CmdHttpListener::run failed:" << ex.what());
+    }
+}
+
+void
+CmdHttpListener::checkPermissions() {
+    if (thread_pool_) {
+        thread_pool_->checkPausePermissions();
+    }
+}
+
+void
+CmdHttpListener::pause() {
+    if (thread_pool_) {
+        thread_pool_->pause();
+    }
+}
+
+void
+CmdHttpListener::resume() {
+    if (thread_pool_) {
+        thread_pool_->run();
+    }
+}
+
+void
+CmdHttpListener::stop() {
+    // Nothing to do.
+    if (!thread_io_service_) {
+        return;
+    }
+
+    LOG_DEBUG(command_logger, DBG_COMMAND, COMMAND_HTTP_LISTENER_STOPPING)
+              .arg(address_)
+              .arg(port_);
+
+    // Stop the thread pool.
+    thread_pool_->stop();
+
+    // Get rid of the listener.
+    http_listener_.reset();
+
+    // Ditch the IOService.
+    thread_io_service_.reset();
+
+    LOG_DEBUG(command_logger, DBG_COMMAND, COMMAND_HTTP_LISTENER_STOPPED)
+              .arg(address_)
+              .arg(port_);
+}
+
+bool
+CmdHttpListener::isRunning() {
+    if (thread_pool_) {
+        return (thread_pool_->isRunning());
+    }
+
+    return (false);
+}
+
+bool
+CmdHttpListener::isStopped() {
+    if (thread_pool_) {
+        return (thread_pool_->isStopped());
+    }
+
+    return (true);
+}
+
+bool
+CmdHttpListener::isPaused() {
+    if (thread_pool_) {
+        return (thread_pool_->isPaused());
+    }
+
+    return (false);
+}
+
+} // namespace isc::config
+} // namespace isc