Adding upstream version 2.5.7.upstream/2.5.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 137 insertions, 0 deletions

diff --git a/src/lib/dhcpsrv/lease_mgr_factory.cc b/src/lib/dhcpsrv/lease_mgr_factory.cc
new file mode 100644
index 0000000..548b27c
--- /dev/null
+++ b/src/lib/dhcpsrv/lease_mgr_factory.cc
@@ -0,0 +1,137 @@
+// Copyright (C) 2012-2024 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 <dhcpsrv/dhcpsrv_log.h>
+#include <dhcpsrv/lease_mgr_factory.h>
+#include <dhcpsrv/memfile_lease_mgr.h>
+#ifdef HAVE_MYSQL
+#include <dhcpsrv/mysql_lease_mgr.h>
+#endif
+#ifdef HAVE_PGSQL
+#include <dhcpsrv/pgsql_lease_mgr.h>
+#endif
+
+#include <boost/algorithm/string.hpp>
+
+#include <algorithm>
+#include <iostream>
+#include <iterator>
+#include <map>
+#include <sstream>
+#include <utility>
+
+using namespace isc::db;
+using namespace std;
+
+namespace isc {
+namespace dhcp {
+
+boost::scoped_ptr<TrackingLeaseMgr>&
+LeaseMgrFactory::getLeaseMgrPtr() {
+    static boost::scoped_ptr<TrackingLeaseMgr> lease_mgr_ptr;
+    return (lease_mgr_ptr);
+}
+
+void
+LeaseMgrFactory::create(const std::string& dbaccess) {
+    const std::string type = "type";
+
+    // Parse the access string and create a redacted string for logging.
+    DatabaseConnection::ParameterMap parameters = DatabaseConnection::parse(dbaccess);
+    std::string redacted = DatabaseConnection::redactedAccessString(parameters);
+
+    // Is "type" present?
+    if (parameters.find(type) == parameters.end()) {
+        LOG_ERROR(dhcpsrv_logger, DHCPSRV_NOTYPE_DB).arg(dbaccess);
+        isc_throw(InvalidParameter, "Database configuration parameters do not "
+                  "contain the 'type' keyword");
+    }
+
+
+    // Yes, check what it is.
+    if (parameters[type] == string("mysql")) {
+#ifdef HAVE_MYSQL
+        LOG_INFO(dhcpsrv_logger, DHCPSRV_MYSQL_DB).arg(redacted);
+        getLeaseMgrPtr().reset(new MySqlLeaseMgr(parameters));
+        return;
+#else
+        LOG_ERROR(dhcpsrv_logger, DHCPSRV_UNKNOWN_DB).arg("mysql");
+        isc_throw(InvalidType, "The Kea server has not been compiled with "
+                  "support for database type: mysql");
+#endif
+    }
+
+    if (parameters[type] == string("postgresql")) {
+#ifdef HAVE_PGSQL
+        LOG_INFO(dhcpsrv_logger, DHCPSRV_PGSQL_DB).arg(redacted);
+        getLeaseMgrPtr().reset(new PgSqlLeaseMgr(parameters));
+        return;
+#else
+        LOG_ERROR(dhcpsrv_logger, DHCPSRV_UNKNOWN_DB).arg("postgresql");
+        isc_throw(InvalidType, "The Kea server has not been compiled with "
+                  "support for database type: postgresql");
+#endif
+    }
+    if (parameters[type] == string("memfile")) {
+        LOG_INFO(dhcpsrv_logger, DHCPSRV_MEMFILE_DB).arg(redacted);
+        getLeaseMgrPtr().reset(new Memfile_LeaseMgr(parameters));
+        return;
+    }
+
+    // Get here on no match
+    LOG_ERROR(dhcpsrv_logger, DHCPSRV_UNKNOWN_DB).arg(parameters[type]);
+    isc_throw(InvalidType, "Database access parameter 'type' does "
+              "not specify a supported database backend: " << parameters[type]);
+}
+
+void
+LeaseMgrFactory::destroy() {
+    // Destroy current lease manager.  This is a no-op if no lease manager
+    // is available.
+    if (getLeaseMgrPtr()) {
+        LOG_DEBUG(dhcpsrv_logger, DHCPSRV_DBG_TRACE, DHCPSRV_CLOSE_DB)
+            .arg(getLeaseMgrPtr()->getType());
+    }
+    getLeaseMgrPtr().reset();
+}
+
+void
+LeaseMgrFactory::recreate(const std::string& dbaccess, bool preserve_callbacks) {
+    TrackingLeaseMgr::CallbackContainerPtr callbacks;
+    // Preserve the callbacks if needed.
+    if (preserve_callbacks && haveInstance()) {
+        callbacks = instance().callbacks_;
+    }
+
+    // Re-create the manager.
+    destroy();
+    create(dbaccess);
+
+    if (callbacks) {
+        // Copy the callbacks to the new instance. It should be fast
+        // because we merely copy the pointer.
+        instance().callbacks_ = callbacks;
+    }
+}
+
+bool
+LeaseMgrFactory::haveInstance() {
+    return (getLeaseMgrPtr().get());
+}
+
+TrackingLeaseMgr&
+LeaseMgrFactory::instance() {
+    TrackingLeaseMgr* lmptr = getLeaseMgrPtr().get();
+    if (lmptr == NULL) {
+        isc_throw(NoLeaseManager, "no current lease manager is available");
+    }
+    return (*lmptr);
+}
+
+} // namespace dhcp
+} // namespace isc