mirror of https://github.com/Icinga/icinga2.git
684 lines
19 KiB
C++
684 lines
19 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "base/logger_fwd.hpp"
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#include "base/objectlock.hpp"
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#include "base/convert.hpp"
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#include "base/utility.hpp"
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#include "base/application.hpp"
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#include "base/dynamictype.hpp"
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#include "base/exception.hpp"
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#include "base/statsfunction.hpp"
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#include "db_ido/dbtype.hpp"
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#include "db_ido/dbvalue.hpp"
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#include "db_ido_mysql/idomysqlconnection.hpp"
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#include <boost/tuple/tuple.hpp>
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#include <boost/foreach.hpp>
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using namespace icinga;
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#define SCHEMA_VERSION "1.11.3"
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REGISTER_TYPE(IdoMysqlConnection);
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REGISTER_STATSFUNCTION(IdoMysqlConnectionStats, &IdoMysqlConnection::StatsFunc);
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Value IdoMysqlConnection::StatsFunc(Dictionary::Ptr& status, Dictionary::Ptr& perfdata)
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{
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Dictionary::Ptr nodes = make_shared<Dictionary>();
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BOOST_FOREACH(const IdoMysqlConnection::Ptr& idomysqlconnection, DynamicType::GetObjects<IdoMysqlConnection>()) {
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size_t items = idomysqlconnection->m_QueryQueue.GetLength();
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Dictionary::Ptr stats = make_shared<Dictionary>();
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stats->Set("version", SCHEMA_VERSION);
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stats->Set("instance_name", idomysqlconnection->GetInstanceName());
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stats->Set("query_queue_items", items);
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nodes->Set(idomysqlconnection->GetName(), stats);
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perfdata->Set("idomysqlconnection_" + idomysqlconnection->GetName() + "_query_queue_items", Convert::ToDouble(items));
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}
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status->Set("idomysqlconnection", nodes);
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return 0;
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}
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void IdoMysqlConnection::Resume(void)
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{
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DbConnection::Resume();
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m_Connected = false;
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m_QueryQueue.SetExceptionCallback(boost::bind(&IdoMysqlConnection::ExceptionHandler, this, _1));
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m_TxTimer = make_shared<Timer>();
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m_TxTimer->SetInterval(1);
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m_TxTimer->OnTimerExpired.connect(boost::bind(&IdoMysqlConnection::TxTimerHandler, this));
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m_TxTimer->Start();
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m_ReconnectTimer = make_shared<Timer>();
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m_ReconnectTimer->SetInterval(10);
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m_ReconnectTimer->OnTimerExpired.connect(boost::bind(&IdoMysqlConnection::ReconnectTimerHandler, this));
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m_ReconnectTimer->Start();
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m_ReconnectTimer->Reschedule(0);
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ASSERT(mysql_thread_safe());
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}
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void IdoMysqlConnection::Pause(void)
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{
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DbConnection::Pause();
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m_ReconnectTimer.reset();
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m_QueryQueue.Enqueue(boost::bind(&IdoMysqlConnection::Disconnect, this));
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m_QueryQueue.Join();
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}
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void IdoMysqlConnection::ExceptionHandler(boost::exception_ptr exp)
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{
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Log(LogCritical, "IdoMysqlConnection", "Exception during database operation: Verify that your database is operational!");
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Log(LogDebug, "IdoMysqlConnection", "Exception during database operation: " + DiagnosticInformation(exp));
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boost::mutex::scoped_lock lock(m_ConnectionMutex);
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if (m_Connected) {
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mysql_close(&m_Connection);
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m_Connected = false;
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}
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}
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void IdoMysqlConnection::AssertOnWorkQueue(void)
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{
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ASSERT(boost::this_thread::get_id() == m_QueryQueue.GetThreadId());
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}
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void IdoMysqlConnection::Disconnect(void)
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{
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AssertOnWorkQueue();
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boost::mutex::scoped_lock lock(m_ConnectionMutex);
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if (!m_Connected)
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return;
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Query("COMMIT");
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mysql_close(&m_Connection);
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m_Connected = false;
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}
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void IdoMysqlConnection::TxTimerHandler(void)
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{
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m_QueryQueue.Enqueue(boost::bind(&IdoMysqlConnection::NewTransaction, this), true);
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}
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void IdoMysqlConnection::NewTransaction(void)
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{
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boost::mutex::scoped_lock lock(m_ConnectionMutex);
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if (!m_Connected)
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return;
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Query("COMMIT");
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Query("BEGIN");
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}
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void IdoMysqlConnection::ReconnectTimerHandler(void)
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{
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m_QueryQueue.Enqueue(boost::bind(&IdoMysqlConnection::Reconnect, this));
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}
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void IdoMysqlConnection::Reconnect(void)
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{
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AssertOnWorkQueue();
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CONTEXT("Reconnecting to MySQL IDO database '" + GetName() + "'");
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std::vector<DbObject::Ptr> active_dbobjs;
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{
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boost::mutex::scoped_lock lock(m_ConnectionMutex);
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bool reconnect = false;
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if (m_Connected) {
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/* Check if we're really still connected */
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if (mysql_ping(&m_Connection) == 0)
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return;
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mysql_close(&m_Connection);
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m_Connected = false;
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reconnect = true;
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}
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ClearIDCache();
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String ihost, iuser, ipasswd, idb;
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const char *host, *user , *passwd, *db;
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long port;
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ihost = GetHost();
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iuser = GetUser();
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ipasswd = GetPassword();
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idb = GetDatabase();
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host = (!ihost.IsEmpty()) ? ihost.CStr() : NULL;
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port = GetPort();
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user = (!iuser.IsEmpty()) ? iuser.CStr() : NULL;
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passwd = (!ipasswd.IsEmpty()) ? ipasswd.CStr() : NULL;
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db = (!idb.IsEmpty()) ? idb.CStr() : NULL;
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if (!mysql_init(&m_Connection)) {
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std::ostringstream msgbuf;
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msgbuf << "mysql_init() failed: \"" << mysql_error(&m_Connection) << "\"";
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Log(LogCritical, "IdoMysqlConnection", msgbuf.str());
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BOOST_THROW_EXCEPTION(std::bad_alloc());
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}
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if (!mysql_real_connect(&m_Connection, host, user, passwd, db, port, NULL, CLIENT_FOUND_ROWS)) {
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std::ostringstream msgbuf;
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msgbuf << "Connection to database '" << db << "' with user '" << user << "' on '" << host << ":" << port
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<< "' failed: \"" << mysql_error(&m_Connection) << "\"";
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Log(LogCritical, "IdoMysqlConnection", msgbuf.str());
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BOOST_THROW_EXCEPTION(std::runtime_error(mysql_error(&m_Connection)));
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}
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m_Connected = true;
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String dbVersionName = "idoutils";
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IdoMysqlResult result = Query("SELECT version FROM " + GetTablePrefix() + "dbversion WHERE name='" + Escape(dbVersionName) + "'");
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Dictionary::Ptr version_row = FetchRow(result);
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if (!version_row) {
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Log(LogCritical, "IdoMysqlConnection", "Schema does not provide any valid version! Verify your schema installation.");
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BOOST_THROW_EXCEPTION(std::runtime_error("Schema does not provide any valid version! Verify your schema installation."));
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}
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DiscardRows(result);
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String version = version_row->Get("version");
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if (Utility::CompareVersion(SCHEMA_VERSION, version) < 0) {
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Log(LogCritical, "IdoMysqlConnection", "Schema version '" + version + "' does not match the required version '" +
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SCHEMA_VERSION + "'! Please check the upgrade documentation.");
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BOOST_THROW_EXCEPTION(std::runtime_error("Schema version '" + version + "' does not match the required version '" +
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SCHEMA_VERSION + "'!"));
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}
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String instanceName = GetInstanceName();
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result = Query("SELECT instance_id FROM " + GetTablePrefix() + "instances WHERE instance_name = '" + Escape(instanceName) + "'");
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Dictionary::Ptr row = FetchRow(result);
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if (!row) {
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Query("INSERT INTO " + GetTablePrefix() + "instances (instance_name, instance_description) VALUES ('" + Escape(instanceName) + "', '" + Escape(GetInstanceDescription()) + "')");
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m_InstanceID = GetLastInsertID();
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} else {
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DiscardRows(result);
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m_InstanceID = DbReference(row->Get("instance_id"));
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}
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std::ostringstream msgbuf;
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msgbuf << "MySQL IDO instance id: " << static_cast<long>(m_InstanceID) << " (schema version: '" + version + "')";
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Log(LogInformation, "IdoMysqlConnection", msgbuf.str());
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/* set session time zone to utc */
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Query("SET SESSION TIME_ZONE='+00:00'");
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/* record connection */
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Query("INSERT INTO " + GetTablePrefix() + "conninfo " +
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"(instance_id, connect_time, last_checkin_time, agent_name, agent_version, connect_type, data_start_time) VALUES ("
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+ Convert::ToString(static_cast<long>(m_InstanceID)) + ", NOW(), NOW(), 'icinga2 db_ido_mysql', '" + Escape(Application::GetVersion())
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+ "', '" + (reconnect ? "RECONNECT" : "INITIAL") + "', NOW())");
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/* clear config tables for the initial config dump */
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PrepareDatabase();
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std::ostringstream q1buf;
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q1buf << "SELECT object_id, objecttype_id, name1, name2, is_active FROM " + GetTablePrefix() + "objects WHERE instance_id = " << static_cast<long>(m_InstanceID);
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result = Query(q1buf.str());
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while ((row = FetchRow(result))) {
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DbType::Ptr dbtype = DbType::GetByID(row->Get("objecttype_id"));
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if (!dbtype)
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continue;
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DbObject::Ptr dbobj = dbtype->GetOrCreateObjectByName(row->Get("name1"), row->Get("name2"));
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SetObjectID(dbobj, DbReference(row->Get("object_id")));
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SetObjectActive(dbobj, row->Get("is_active"));
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if (GetObjectActive(dbobj))
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active_dbobjs.push_back(dbobj);
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}
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Query("BEGIN");
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}
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UpdateAllObjects();
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/* deactivate all deleted configuration objects */
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BOOST_FOREACH(const DbObject::Ptr& dbobj, active_dbobjs) {
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if (dbobj->GetObject() == NULL) {
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Log(LogNotice, "IdoMysqlConnection", "Deactivate deleted object name1: '" + Convert::ToString(dbobj->GetName1() +
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"' name2: '" + Convert::ToString(dbobj->GetName2() + "'.")));
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DeactivateObject(dbobj);
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}
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}
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}
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void IdoMysqlConnection::ClearConfigTable(const String& table)
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{
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Query("DELETE FROM " + GetTablePrefix() + table + " WHERE instance_id = " + Convert::ToString(static_cast<long>(m_InstanceID)));
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}
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IdoMysqlResult IdoMysqlConnection::Query(const String& query)
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{
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AssertOnWorkQueue();
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Log(LogDebug, "IdoMysqlConnection", "Query: " + query);
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if (mysql_query(&m_Connection, query.CStr()) != 0) {
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std::ostringstream msgbuf;
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String message = mysql_error(&m_Connection);
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msgbuf << "Error \"" << message << "\" when executing query \"" << query << "\"";
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Log(LogCritical, "IdoMysqlConnection", msgbuf.str());
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BOOST_THROW_EXCEPTION(
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database_error()
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<< errinfo_message(mysql_error(&m_Connection))
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<< errinfo_database_query(query)
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);
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}
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m_AffectedRows = mysql_affected_rows(&m_Connection);
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MYSQL_RES *result = mysql_use_result(&m_Connection);
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if (!result) {
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if (mysql_field_count(&m_Connection) > 0) {
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std::ostringstream msgbuf;
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String message = mysql_error(&m_Connection);
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msgbuf << "Error \"" << message << "\" when executing query \"" << query << "\"";
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Log(LogCritical, "IdoMysqlConnection", msgbuf.str());
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BOOST_THROW_EXCEPTION(
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database_error()
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<< errinfo_message(mysql_error(&m_Connection))
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<< errinfo_database_query(query)
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);
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}
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return IdoMysqlResult();
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}
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return IdoMysqlResult(result, std::ptr_fun(mysql_free_result));
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}
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DbReference IdoMysqlConnection::GetLastInsertID(void)
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{
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AssertOnWorkQueue();
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return DbReference(mysql_insert_id(&m_Connection));
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}
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int IdoMysqlConnection::GetAffectedRows(void)
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{
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AssertOnWorkQueue();
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return m_AffectedRows;
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}
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String IdoMysqlConnection::Escape(const String& s)
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{
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AssertOnWorkQueue();
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size_t length = s.GetLength();
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char *to = new char[s.GetLength() * 2 + 1];
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mysql_real_escape_string(&m_Connection, to, s.CStr(), length);
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String result = String(to);
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delete [] to;
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return result;
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}
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Dictionary::Ptr IdoMysqlConnection::FetchRow(const IdoMysqlResult& result)
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{
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AssertOnWorkQueue();
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MYSQL_ROW row;
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MYSQL_FIELD *field;
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unsigned long *lengths, i;
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row = mysql_fetch_row(result.get());
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if (!row)
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return Dictionary::Ptr();
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lengths = mysql_fetch_lengths(result.get());
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if (!lengths)
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return Dictionary::Ptr();
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Dictionary::Ptr dict = make_shared<Dictionary>();
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mysql_field_seek(result.get(), 0);
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for (field = mysql_fetch_field(result.get()), i = 0; field; field = mysql_fetch_field(result.get()), i++)
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dict->Set(field->name, String(row[i], row[i] + lengths[i]));
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return dict;
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}
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void IdoMysqlConnection::DiscardRows(const IdoMysqlResult& result)
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{
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Dictionary::Ptr row;
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while ((row = FetchRow(result)))
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; /* empty loop body */
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}
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void IdoMysqlConnection::ActivateObject(const DbObject::Ptr& dbobj)
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{
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boost::mutex::scoped_lock lock(m_ConnectionMutex);
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InternalActivateObject(dbobj);
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}
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void IdoMysqlConnection::InternalActivateObject(const DbObject::Ptr& dbobj)
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{
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if (!m_Connected)
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return;
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DbReference dbref = GetObjectID(dbobj);
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std::ostringstream qbuf;
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if (!dbref.IsValid()) {
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qbuf << "INSERT INTO " + GetTablePrefix() + "objects (instance_id, objecttype_id, name1, name2, is_active) VALUES ("
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<< static_cast<long>(m_InstanceID) << ", " << dbobj->GetType()->GetTypeID() << ", "
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<< "'" << Escape(dbobj->GetName1()) << "', '" << Escape(dbobj->GetName2()) << "', 1)";
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Query(qbuf.str());
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SetObjectID(dbobj, GetLastInsertID());
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} else {
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qbuf << "UPDATE " + GetTablePrefix() + "objects SET is_active = 1 WHERE object_id = " << static_cast<long>(dbref);
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Query(qbuf.str());
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}
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}
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void IdoMysqlConnection::DeactivateObject(const DbObject::Ptr& dbobj)
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{
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boost::mutex::scoped_lock lock(m_ConnectionMutex);
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if (!m_Connected)
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return;
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DbReference dbref = GetObjectID(dbobj);
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if (!dbref.IsValid())
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return;
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std::ostringstream qbuf;
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qbuf << "UPDATE " + GetTablePrefix() + "objects SET is_active = 0 WHERE object_id = " << static_cast<long>(dbref);
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Query(qbuf.str());
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/* Note that we're _NOT_ clearing the db refs via SetReference/SetConfigUpdate/SetStatusUpdate
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* because the object is still in the database. */
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}
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/* caller must hold m_ConnectionMutex */
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bool IdoMysqlConnection::FieldToEscapedString(const String& key, const Value& value, Value *result)
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{
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if (key == "instance_id") {
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*result = static_cast<long>(m_InstanceID);
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return true;
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}
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if (key == "notification_id") {
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*result = static_cast<long>(GetNotificationInsertID(value));
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return true;
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}
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Value rawvalue = DbValue::ExtractValue(value);
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if (rawvalue.IsObjectType<DynamicObject>()) {
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DbObject::Ptr dbobjcol = DbObject::GetOrCreateByObject(rawvalue);
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if (!dbobjcol) {
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*result = 0;
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return true;
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}
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DbReference dbrefcol;
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if (DbValue::IsObjectInsertID(value)) {
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dbrefcol = GetInsertID(dbobjcol);
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ASSERT(dbrefcol.IsValid());
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} else {
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dbrefcol = GetObjectID(dbobjcol);
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if (!dbrefcol.IsValid()) {
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InternalActivateObject(dbobjcol);
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dbrefcol = GetObjectID(dbobjcol);
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if (!dbrefcol.IsValid())
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return false;
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}
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}
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*result = static_cast<long>(dbrefcol);
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} else if (DbValue::IsTimestamp(value)) {
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long ts = rawvalue;
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std::ostringstream msgbuf;
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msgbuf << "FROM_UNIXTIME(" << ts << ")";
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*result = Value(msgbuf.str());
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} else if (DbValue::IsTimestampNow(value)) {
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*result = "NOW()";
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} else {
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*result = "'" + Escape(rawvalue) + "'";
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}
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return true;
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}
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void IdoMysqlConnection::ExecuteQuery(const DbQuery& query)
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{
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ASSERT(query.Category != DbCatInvalid);
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m_QueryQueue.Enqueue(boost::bind(&IdoMysqlConnection::InternalExecuteQuery, this, query, (DbQueryType *)NULL), true);
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}
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void IdoMysqlConnection::InternalExecuteQuery(const DbQuery& query, DbQueryType *typeOverride)
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{
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boost::mutex::scoped_lock lock(m_ConnectionMutex);
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if ((query.Category & GetCategories()) == 0)
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return;
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if (!m_Connected)
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return;
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std::ostringstream qbuf, where;
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int type;
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if (query.WhereCriteria) {
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where << " WHERE ";
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ObjectLock olock(query.WhereCriteria);
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Value value;
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bool first = true;
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BOOST_FOREACH(const Dictionary::Pair& kv, query.WhereCriteria) {
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if (!FieldToEscapedString(kv.first, kv.second, &value))
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return;
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if (!first)
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where << " AND ";
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where << kv.first << " = " << value;
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if (first)
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first = false;
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}
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}
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type = typeOverride ? *typeOverride : query.Type;
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bool upsert = false;
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if ((type & DbQueryInsert) && (type & DbQueryUpdate)) {
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bool hasid = false;
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ASSERT(query.Object);
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if (query.ConfigUpdate)
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hasid = GetConfigUpdate(query.Object);
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else if (query.StatusUpdate)
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hasid = GetStatusUpdate(query.Object);
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else
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ASSERT(!"Invalid query flags.");
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if (!hasid)
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upsert = true;
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type = DbQueryUpdate;
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}
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switch (type) {
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case DbQueryInsert:
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qbuf << "INSERT INTO " << GetTablePrefix() << query.Table;
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break;
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case DbQueryUpdate:
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qbuf << "UPDATE " << GetTablePrefix() << query.Table << " SET";
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break;
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case DbQueryDelete:
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qbuf << "DELETE FROM " << GetTablePrefix() << query.Table;
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break;
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default:
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ASSERT(!"Invalid query type.");
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}
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if (type == DbQueryInsert || type == DbQueryUpdate) {
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std::ostringstream colbuf, valbuf;
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ObjectLock olock(query.Fields);
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bool first = true;
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BOOST_FOREACH(const Dictionary::Pair& kv, query.Fields) {
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Value value;
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if (kv.second.IsEmpty())
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continue;
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if (!FieldToEscapedString(kv.first, kv.second, &value))
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return;
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if (type == DbQueryInsert) {
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if (!first) {
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colbuf << ", ";
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valbuf << ", ";
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}
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colbuf << kv.first;
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valbuf << value;
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} else {
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if (!first)
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qbuf << ", ";
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qbuf << " " << kv.first << " = " << value;
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}
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if (first)
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first = false;
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}
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if (type == DbQueryInsert)
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qbuf << " (" << colbuf.str() << ") VALUES (" << valbuf.str() << ")";
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}
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if (type != DbQueryInsert)
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qbuf << where.str();
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Query(qbuf.str());
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if (upsert && GetAffectedRows() == 0) {
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lock.unlock();
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DbQueryType to = DbQueryInsert;
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InternalExecuteQuery(query, &to);
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return;
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}
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if (query.Object) {
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if (query.ConfigUpdate)
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SetConfigUpdate(query.Object, true);
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else if (query.StatusUpdate)
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SetStatusUpdate(query.Object, true);
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if (type == DbQueryInsert && query.ConfigUpdate)
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SetInsertID(query.Object, GetLastInsertID());
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}
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if (type == DbQueryInsert && query.Table == "notifications" && query.NotificationObject) { // FIXME remove hardcoded table name
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SetNotificationInsertID(query.NotificationObject, GetLastInsertID());
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Log(LogDebug, "IdoMysqlConnection", "saving contactnotification notification_id=" + Convert::ToString(static_cast<long>(GetLastInsertID())));
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}
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}
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void IdoMysqlConnection::CleanUpExecuteQuery(const String& table, const String& time_column, double max_age)
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{
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m_QueryQueue.Enqueue(boost::bind(&IdoMysqlConnection::InternalCleanUpExecuteQuery, this, table, time_column, max_age), true);
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}
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void IdoMysqlConnection::InternalCleanUpExecuteQuery(const String& table, const String& time_column, double max_age)
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{
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boost::mutex::scoped_lock lock(m_ConnectionMutex);
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if (!m_Connected)
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return;
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Query("DELETE FROM " + GetTablePrefix() + table + " WHERE instance_id = " +
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Convert::ToString(static_cast<long>(m_InstanceID)) + " AND " + time_column +
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" < FROM_UNIXTIME(" + Convert::ToString(static_cast<long>(max_age)) + ")");
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}
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void IdoMysqlConnection::FillIDCache(const DbType::Ptr& type)
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{
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String query = "SELECT " + type->GetIDColumn() + " AS object_id, " + type->GetTable() + "_id FROM " + GetTablePrefix() + type->GetTable() + "s";
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IdoMysqlResult result = Query(query);
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Dictionary::Ptr row;
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while ((row = FetchRow(result))) {
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SetInsertID(type, DbReference(row->Get("object_id")), DbReference(row->Get(type->GetTable() + "_id")));
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}
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}
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