mirror of https://github.com/Icinga/icinga2.git
253 lines
8.2 KiB
C++
253 lines
8.2 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 "remote/apilistener.hpp"
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#include "remote/apifunction.hpp"
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#include "base/dynamictype.hpp"
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#include "base/logger.hpp"
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#include "base/convert.hpp"
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#include "base/exception.hpp"
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#include <boost/foreach.hpp>
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#include <fstream>
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using namespace icinga;
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REGISTER_APIFUNCTION(Update, config, &ApiListener::ConfigUpdateHandler);
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bool ApiListener::IsConfigMaster(const Zone::Ptr& zone) const
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{
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String path = Application::GetZonesDir() + "/" + zone->GetName();
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return Utility::PathExists(path);
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}
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void ApiListener::ConfigGlobHandler(Dictionary::Ptr& config, const String& path, const String& file)
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{
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CONTEXT("Creating config update for file '" + file + "'");
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Log(LogNotice, "ApiListener")
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<< "Creating config update for file '" << file << "'";
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std::ifstream fp(file.CStr());
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if (!fp)
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return;
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String content((std::istreambuf_iterator<char>(fp)), std::istreambuf_iterator<char>());
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config->Set(file.SubStr(path.GetLength()), content);
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}
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Dictionary::Ptr ApiListener::LoadConfigDir(const String& dir)
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{
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Dictionary::Ptr config = new Dictionary();
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Utility::GlobRecursive(dir, "*.conf", boost::bind(&ApiListener::ConfigGlobHandler, boost::ref(config), dir, _1), GlobFile);
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return config;
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}
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bool ApiListener::UpdateConfigDir(const Dictionary::Ptr& oldConfig, const Dictionary::Ptr& newConfig, const String& configDir)
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{
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bool configChange = false;
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if (oldConfig->Contains(".timestamp") && newConfig->Contains(".timestamp")) {
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double oldTS = Convert::ToDouble(oldConfig->Get(".timestamp"));
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double newTS = Convert::ToDouble(newConfig->Get(".timestamp"));
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/* skip update if our config is newer */
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if (oldTS <= newTS)
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return false;
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}
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BOOST_FOREACH(const Dictionary::Pair& kv, newConfig) {
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if (oldConfig->Get(kv.first) != kv.second) {
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configChange = true;
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String path = configDir + "/" + kv.first;
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Log(LogInformation, "ApiListener")
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<< "Updating configuration file: " << path;
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//pass the directory and generate a dir tree, if not existing already
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Utility::MkDirP(Utility::DirName(path), 0755);
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std::ofstream fp(path.CStr(), std::ofstream::out | std::ostream::trunc);
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fp << kv.second;
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fp.close();
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}
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}
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BOOST_FOREACH(const Dictionary::Pair& kv, oldConfig) {
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if (!newConfig->Contains(kv.first)) {
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configChange = true;
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String path = configDir + "/" + kv.first;
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(void) unlink(path.CStr());
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}
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}
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String tsPath = configDir + "/.timestamp";
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if (!Utility::PathExists(tsPath)) {
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std::ofstream fp(tsPath.CStr(), std::ofstream::out | std::ostream::trunc);
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fp << Utility::GetTime();
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fp.close();
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}
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return configChange;
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}
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void ApiListener::SyncZoneDir(const Zone::Ptr& zone) const
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{
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String newDir = Application::GetZonesDir() + "/" + zone->GetName();
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String oldDir = Application::GetLocalStateDir() + "/lib/icinga2/api/zones/" + zone->GetName();
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Log(LogInformation, "ApiListener")
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<< "Copying zone configuration files from '" << newDir << "' to '" << oldDir << "'.";
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if (!Utility::MkDir(oldDir, 0700)) {
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Log(LogCritical, "ApiListener")
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<< "mkdir() for path '" << oldDir << "'failed with error code " << errno << ", \"" << Utility::FormatErrorNumber(errno) << "\"";
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("mkdir")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(oldDir));
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}
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Dictionary::Ptr newConfig = LoadConfigDir(newDir);
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Dictionary::Ptr oldConfig = LoadConfigDir(oldDir);
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UpdateConfigDir(oldConfig, newConfig, oldDir);
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}
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void ApiListener::SyncZoneDirs(void) const
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{
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BOOST_FOREACH(const Zone::Ptr& zone, DynamicType::GetObjectsByType<Zone>()) {
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if (!IsConfigMaster(zone))
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continue;
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try {
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SyncZoneDir(zone);
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} catch (const std::exception&) {
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continue;
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}
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}
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}
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void ApiListener::SendConfigUpdate(const ApiClient::Ptr& aclient)
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{
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Endpoint::Ptr endpoint = aclient->GetEndpoint();
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ASSERT(endpoint);
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Zone::Ptr azone = endpoint->GetZone();
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Zone::Ptr lzone = Zone::GetLocalZone();
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/* don't try to send config updates to our master */
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if (!azone->IsChildOf(lzone))
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return;
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Dictionary::Ptr configUpdate = new Dictionary();
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String zonesDir = Application::GetLocalStateDir() + "/lib/icinga2/api/zones";
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BOOST_FOREACH(const Zone::Ptr& zone, DynamicType::GetObjectsByType<Zone>()) {
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String zoneDir = zonesDir + "/" + zone->GetName();
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if (!zone->IsChildOf(azone) && !zone->IsGlobal()) {
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Log(LogNotice, "ApiListener")
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<< "Skipping sync for '" << zone->GetName() << "'. Not a child of zone '" << azone->GetName() << "'.";
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continue;
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}
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if (!Utility::PathExists(zoneDir)) {
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Log(LogNotice, "ApiListener")
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<< "Ignoring sync for '" << zone->GetName() << "'. Zone directory '" << zoneDir << "' does not exist.";
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continue;
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}
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if (zone->IsGlobal())
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Log(LogInformation, "ApiListener")
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<< "Syncing global zone '" << zone->GetName() << "'.";
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configUpdate->Set(zone->GetName(), LoadConfigDir(zonesDir + "/" + zone->GetName()));
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}
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Dictionary::Ptr params = new Dictionary();
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params->Set("update", configUpdate);
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Dictionary::Ptr message = new Dictionary();
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message->Set("jsonrpc", "2.0");
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message->Set("method", "config::Update");
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message->Set("params", params);
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aclient->SendMessage(message);
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}
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Value ApiListener::ConfigUpdateHandler(const MessageOrigin& origin, const Dictionary::Ptr& params)
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{
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if (!origin.FromClient->GetEndpoint() || (origin.FromZone && !Zone::GetLocalZone()->IsChildOf(origin.FromZone)))
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return Empty;
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ApiListener::Ptr listener = ApiListener::GetInstance();
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if (!listener) {
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Log(LogCritical, "ApiListener", "No instance available.");
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return Empty;
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}
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if (!listener->GetAcceptConfig()) {
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Log(LogWarning, "ApiListener")
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<< "Ignoring config update. '" << listener->GetName() << "' does not accept config.";
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return Empty;
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}
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Dictionary::Ptr update = params->Get("update");
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bool configChange = false;
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ObjectLock olock(update);
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BOOST_FOREACH(const Dictionary::Pair& kv, update) {
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Zone::Ptr zone = Zone::GetByName(kv.first);
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if (!zone) {
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Log(LogWarning, "ApiListener")
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<< "Ignoring config update for unknown zone: " << kv.first;
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continue;
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}
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String oldDir = Application::GetLocalStateDir() + "/lib/icinga2/api/zones/" + zone->GetName();
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if (!Utility::MkDir(oldDir, 0700)) {
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Log(LogCritical, "ApiListener")
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<< "mkdir() for path '" << oldDir << "'failed with error code " << errno << ", \"" << Utility::FormatErrorNumber(errno) << "\"";
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("mkdir")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(oldDir));
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}
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Dictionary::Ptr newConfig = kv.second;
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Dictionary::Ptr oldConfig = LoadConfigDir(oldDir);
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if (UpdateConfigDir(oldConfig, newConfig, oldDir))
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configChange = true;
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}
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if (configChange) {
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Log(LogInformation, "ApiListener", "Restarting after configuration change.");
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Application::RequestRestart();
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}
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return Empty;
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}
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