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icinga2/lib/cli/nodeupdateconfigcommand.cpp

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/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "cli/nodeupdateconfigcommand.hpp"
#include "cli/nodeutility.hpp"
#include "cli/repositoryutility.hpp"
#include "base/logger.hpp"
#include "base/application.hpp"
#include "base/objectlock.hpp"
#include "base/json.hpp"
#include <boost/foreach.hpp>
#include <boost/algorithm/string/join.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <iostream>
#include <fstream>
#include <vector>
using namespace icinga;
namespace po = boost::program_options;
REGISTER_CLICOMMAND("node/update-config", NodeUpdateConfigCommand);
String NodeUpdateConfigCommand::GetDescription(void) const
{
return "Update Icinga 2 node config.";
}
String NodeUpdateConfigCommand::GetShortDescription(void) const
{
return "update node config";
}
ImpersonationLevel NodeUpdateConfigCommand::GetImpersonationLevel(void) const
{
return ImpersonateRoot;
}
/**
* The entry point for the "node update-config" CLI command.
*
* @returns An exit status.
*/
int NodeUpdateConfigCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
{
//If there are changes pending, abort the current operation
if (RepositoryUtility::ChangeLogHasPendingChanges()) {
Log(LogWarning, "cli")
<< "There are pending changes for commit.\n"
<< "Please review and commit them using 'icinga2 repository commit [--simulate]'\n"
<< "or drop them using 'icinga2 repository clear-changes' before proceeding.";
return 1;
}
String inventory_path = NodeUtility::GetRepositoryPath() + "/inventory.index";
Dictionary::Ptr old_inventory = new Dictionary();
if (Utility::PathExists(inventory_path)) {
old_inventory = Utility::LoadJsonFile(inventory_path);
}
Dictionary::Ptr inventory = new Dictionary();
Log(LogInformation, "cli")
<< "Updating node configuration for ";
NodeUtility::PrintNodes(std::cout);
Utility::LoadExtensionLibrary("icinga");
std::vector<String> object_paths = RepositoryUtility::GetObjects();
BOOST_FOREACH(const Dictionary::Ptr& node, NodeUtility::GetNodes()) {
Dictionary::Ptr repository = node->Get("repository");
String zone = node->Get("zone");
String endpoint = node->Get("endpoint");
String node_name = endpoint;
/* store existing structure in index */
inventory->Set(endpoint, node);
Dictionary::Ptr host_services = new Dictionary();
Log(LogInformation, "cli")
<< "Adding host '" << zone << "' to the repository.";
Dictionary::Ptr host_attrs = new Dictionary();
host_attrs->Set("__name", zone);
host_attrs->Set("name", zone);
host_attrs->Set("check_command", "cluster-zone");
Array::Ptr host_imports = new Array();
host_imports->Add("satellite-host"); //default host node template
host_attrs->Set("import", host_imports);
if (!RepositoryUtility::AddObject(zone, "Host", host_attrs))
continue;
ObjectLock olock(repository);
BOOST_FOREACH(const Dictionary::Pair& kv, repository) {
String host = kv.first;
String host_pattern = host + ".conf";
bool skip_host = false;
if (host == "localhost") {
Log(LogWarning, "cli")
<< "Ignoring host '" << host << "'. Please make sure to configure a unique name on your node '" << endpoint << "'.";
continue;
}
BOOST_FOREACH(const String& object_path, object_paths) {
if (object_path.Contains(host_pattern)) {
Log(LogWarning, "cli")
<< "Host '" << host << "' already existing. Skipping its creation.";
skip_host = true;
break;
}
}
/* host has already been created above */
if (host == zone)
skip_host = true;
bool host_was_blacklisted = false;
/* check against black/whitelist before trying to add host */
if (NodeUtility::CheckAgainstBlackAndWhiteList("blacklist", node_name, host, Empty) &&
!NodeUtility::CheckAgainstBlackAndWhiteList("whitelist", node_name, host, Empty)) {
Log(LogWarning, "cli")
<< "Host '" << host << "' on node '" << node_name << "' is blacklisted, but not whitelisted. Skipping.";
skip_host = true;
host_was_blacklisted = true; //check this for services on this blacklisted host
}
if (!skip_host) {
/* add a new host to the config repository */
Dictionary::Ptr host_attrs = new Dictionary();
host_attrs->Set("__name", host);
host_attrs->Set("name", host);
if (host == zone)
host_attrs->Set("check_command", "cluster-zone");
else {
host_attrs->Set("check_command", "dummy");
host_attrs->Set("zone", zone);
}
Array::Ptr host_imports = new Array();
host_imports->Add("satellite-host"); //default host node template
host_attrs->Set("import", host_imports);
RepositoryUtility::AddObject(host, "Host", host_attrs);
}
/* special condition: what if the host was blacklisted before, but the services should be generated? */
if (host_was_blacklisted) {
Log(LogNotice, "cli")
<< "Host '" << host << "' was blacklisted. Won't generate any services.";
continue;
}
Array::Ptr services = kv.second;
if (services->GetLength() == 0) {
Log(LogNotice, "cli")
<< "Host '" << host << "' without services.";
continue;
}
ObjectLock xlock(services);
BOOST_FOREACH(const String& service, services) {
bool skip_service = false;
String service_pattern = host + "/" + service + ".conf";
BOOST_FOREACH(const String& object_path, object_paths) {
if (object_path.Contains(service_pattern)) {
Log(LogWarning, "cli")
<< "Service '" << service << "' on Host '" << host << "' already existing. Skipping its creation.";
skip_service = true;
break;
}
}
/* check against black/whitelist before trying to add service */
if (NodeUtility::CheckAgainstBlackAndWhiteList("blacklist", endpoint, host, service) &&
!NodeUtility::CheckAgainstBlackAndWhiteList("whitelist", endpoint, host, service)) {
Log(LogWarning, "cli")
<< "Service '" << service << "' on host '" << host << "' on node '"
<< node_name << "' is blacklisted, but not whitelisted. Skipping.";
skip_service = true;
}
if (skip_service)
continue;
/* add a new service for this host to the config repository */
Dictionary::Ptr service_attrs = new Dictionary();
String long_name = host + "!" + service; //use NameComposer?
service_attrs->Set("__name", long_name);
service_attrs->Set("name", service);
service_attrs->Set("host_name", host); //Required for host-service relation
service_attrs->Set("check_command", "dummy");
service_attrs->Set("zone", zone);
Array::Ptr service_imports = new Array();
service_imports->Add("satellite-service"); //default service node template
service_attrs->Set("import", service_imports);
if (!RepositoryUtility::AddObject(service, "Service", service_attrs))
continue;
}
}
/* write a new zone and endpoint for the node */
Dictionary::Ptr endpoint_attrs = new Dictionary();
endpoint_attrs->Set("__name", endpoint);
endpoint_attrs->Set("name", endpoint);
Dictionary::Ptr settings = node->Get("settings");
if (settings) {
if (settings->Contains("host"))
endpoint_attrs->Set("host", settings->Get("host"));
if (settings->Contains("port"))
endpoint_attrs->Set("port", settings->Get("port"));
}
if (!RepositoryUtility::AddObject(endpoint, "Endpoint", endpoint_attrs)) {
Log(LogCritical, "cli")
<< "Cannot add node endpoint '" << endpoint << "' to the config repository!\n";
}
Dictionary::Ptr zone_attrs = new Dictionary();
Array::Ptr zone_members = new Array();
zone_members->Add(endpoint);
zone_attrs->Set("__name", zone);
zone_attrs->Set("name", zone);
zone_attrs->Set("endpoints", zone_members);
String node_parent_zone = "master"; //hardcode the name
String parent_zone;
if (!node->Contains("parent_zone")) {
Log(LogWarning, "cli")
<< "Node '" << endpoint << "' does not have any parent zone defined. Using 'master' as default. Please verify the generated configuration.";
parent_zone = node_parent_zone;
} else {
parent_zone = node->Get("parent_zone");
if (parent_zone.IsEmpty()) {
Log(LogWarning, "cli")
<< "Node '" << endpoint << "' does not have any parent zone defined. Using 'master' as default. Please verify the generated configuration.";
parent_zone = node_parent_zone;
}
}
zone_attrs->Set("parent", parent_zone);
if (!RepositoryUtility::AddObject(zone, "Zone", zone_attrs)) {
Log(LogCritical, "cli")
<< "Cannot add node zone '" << zone << "' to the config repository!\n";
}
}
/* check if there are objects inside the old_inventory which do not exist anymore */
BOOST_FOREACH(const Dictionary::Pair& old_node_objs, old_inventory) {
String old_node_name = old_node_objs.first;
/* check if the node was dropped */
if (!inventory->Contains(old_node_name)) {
Log(LogInformation, "cli")
<< "Node update found old node '" << old_node_name << "'. Removing it and all of its hosts/services.";
//TODO Remove an node and all of his hosts
Dictionary::Ptr old_node = old_inventory->Get(old_node_name);
Dictionary::Ptr old_node_repository = old_node->Get("repository");
ObjectLock olock(old_node_repository);
BOOST_FOREACH(const Dictionary::Pair& kv, old_node_repository) {
String host = kv.first;
Dictionary::Ptr host_attrs = new Dictionary();
host_attrs->Set("name", host);
RepositoryUtility::RemoveObject(host, "Host", host_attrs); //this removes all services for this host as well
}
String zone = old_node->Get("zone");
String endpoint = old_node->Get("endpoint");
Dictionary::Ptr zone_attrs = new Dictionary();
zone_attrs->Set("name", zone);
RepositoryUtility::RemoveObject(zone, "Zone", zone_attrs);
Dictionary::Ptr endpoint_attrs = new Dictionary();
endpoint_attrs->Set("name", endpoint);
RepositoryUtility::RemoveObject(endpoint, "Endpoint", endpoint_attrs);
} else {
/* get the current node */
Dictionary::Ptr new_node = inventory->Get(old_node_name);
Dictionary::Ptr new_node_repository = new_node->Get("repository");
Dictionary::Ptr old_node = old_inventory->Get(old_node_name);
Dictionary::Ptr old_node_repository = old_node->Get("repository");
ObjectLock xlock(old_node_repository);
BOOST_FOREACH(const Dictionary::Pair& kv, old_node_repository) {
String old_host = kv.first;
if (old_host == "localhost") {
Log(LogWarning, "cli")
<< "Ignoring host '" << old_host << "'. Please make sure to configure a unique name on your node '" << old_node_name << "'.";
continue;
}
/* check against black/whitelist before trying to remove host */
if (NodeUtility::CheckAgainstBlackAndWhiteList("blacklist", old_node_name, old_host, Empty) &&
!NodeUtility::CheckAgainstBlackAndWhiteList("whitelist", old_node_name, old_host, Empty)) {
Log(LogWarning, "cli")
<< "Host '" << old_node << "' on node '" << old_node << "' is blacklisted, but not whitelisted. Skipping.";
continue;
}
if (!new_node_repository->Contains(old_host)) {
Log(LogInformation, "cli")
<< "Node update found old host '" << old_host << "' on node '" << old_node_name << "'. Removing it.";
Dictionary::Ptr host_attrs = new Dictionary();
host_attrs->Set("name", old_host);
RepositoryUtility::RemoveObject(old_host, "Host", host_attrs); //this will remove all services for this host too
} else {
/* host exists, now check all services for this host */
Array::Ptr old_services = kv.second;
Array::Ptr new_services = new_node_repository->Get(old_host);
ObjectLock ylock(old_services);
BOOST_FOREACH(const String& old_service, old_services) {
/* check against black/whitelist before trying to remove service */
if (NodeUtility::CheckAgainstBlackAndWhiteList("blacklist", old_node_name, old_host, old_service) &&
!NodeUtility::CheckAgainstBlackAndWhiteList("whitelist", old_node_name, old_host, old_service)) {
Log(LogWarning, "cli")
<< "Service '" << old_service << "' on host '" << old_host << "' on node '"
<< old_node_name << "' is blacklisted, but not whitelisted. Skipping.";
continue;
}
if (!new_services->Contains(old_service)) {
Log(LogInformation, "cli")
<< "Node update found old service '" << old_service << "' on host '" << old_host
<< "' on node '" << old_node_name << "'. Removing it.";
Dictionary::Ptr service_attrs = new Dictionary();
service_attrs->Set("name", old_service);
service_attrs->Set("host_name", old_host);
RepositoryUtility::RemoveObject(old_service, "Service", service_attrs);
}
}
}
}
}
}
Log(LogInformation, "cli", "Committing node configuration.");
RepositoryUtility::PrintChangeLog(std::cout);
std::cout << "\n";
RepositoryUtility::CommitChangeLog();
/* store the new inventory for next run */
Utility::SaveJsonFile(inventory_path, inventory);
std::cout << "Make sure to reload Icinga 2 for these changes to take effect." << std::endl;
return 0;
}
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