granicus.if.org Git - icinga2/blob - lib/redis/rediswriter-config.cpp

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/)  *
   4  *                                                                            *
   5  * This program is free software; you can redistribute it and/or              *
   6  * modify it under the terms of the GNU General Public License                *
   7  * as published by the Free Software Foundation; either version 2             *
   8  * of the License, or (at your option) any later version.                     *
   9  *                                                                            *
  10  * This program is distributed in the hope that it will be useful,            *
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
  13  * GNU General Public License for more details.                               *
  14  *                                                                            *
  15  * You should have received a copy of the GNU General Public License          *
  16  * along with this program; if not, write to the Free Software Foundation     *
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
  18  ******************************************************************************/
  19
  20 #include "redis/rediswriter.hpp"
  21 #include "icinga/customvarobject.hpp"
  22 #include "base/json.hpp"
  23 #include "base/logger.hpp"
  24 #include "base/serializer.hpp"
  25 #include "base/initialize.hpp"
  26
  27 using namespace icinga;
  28
  29 /*
  30 - icinga:config:<type> as hash
  31 key: sha1 checksum(name)
  32 value: JsonEncode(Serialize(object, FAConfig)) + config_checksum
  33
  34 Diff between calculated config_checksum and Redis json config_checksum
  35 Alternative: Replace into.
  36
  37
  38 - icinga:status:<type> as hash
  39 key: sha1 checksum(name)
  40 value: JsonEncode(Serialize(object, FAState))
  41 */
  42
  43 INITIALIZE_ONCE(&RedisWriter::ConfigStaticInitialize);
  44
  45 void RedisWriter::ConfigStaticInitialize(void)
  46 {
  47         /* triggered in ProcessCheckResult(), requires UpdateNextCheck() to be called before */
  48         ConfigObject::OnStateChanged.connect(boost::bind(&RedisWriter::StateChangedHandler, _1));
  49         CustomVarObject::OnVarsChanged.connect(boost::bind(&RedisWriter::VarsChangedHandler, _1));
  50
  51         /* triggered on create, update and delete objects */
  52         ConfigObject::OnVersionChanged.connect(boost::bind(&RedisWriter::VersionChangedHandler, _1));
  53 }
  54
  55 //TODO: OnActiveChanged handling.
  56 void RedisWriter::UpdateAllConfigObjects(void)
  57 {
  58         AssertOnWorkQueue();
  59
  60         //TODO: Just use config types
  61         for (const Type::Ptr& type : Type::GetAllTypes()) {
  62                 if (!ConfigObject::TypeInstance->IsAssignableFrom(type))
  63                         continue;
  64
  65                 String typeName = type->GetName();
  66
  67                 /* replace into aka delete insert is faster than a full diff */
  68                 redisReply *reply1 = reinterpret_cast<redisReply *>(redisCommand(m_Context, "DEL icinga:config:%s", typeName.CStr()));
  69
  70                 if (!reply1) {
  71                         redisFree(m_Context);
  72                         m_Context = NULL;
  73                         return;
  74                 }
  75
  76                 if (reply1->type == REDIS_REPLY_STATUS || reply1->type == REDIS_REPLY_ERROR) {
  77                         Log(LogInformation, "RedisWriter")
  78                             << "DEL icinga:config:" << typeName << ": " << reply1->str;
  79                 }
  80
  81                 if (reply1->type == REDIS_REPLY_ERROR) {
  82                         freeReplyObject(reply1);
  83                         return;
  84                 }
  85
  86                 freeReplyObject(reply1);
  87
  88                 redisReply *reply2 = reinterpret_cast<redisReply *>(redisCommand(m_Context, "DEL icinga:status:%s", typeName.CStr()));
  89
  90                 if (!reply2) {
  91                         redisFree(m_Context);
  92                         m_Context = NULL;
  93                         return;
  94                 }
  95
  96                 if (reply2->type == REDIS_REPLY_STATUS || reply2->type == REDIS_REPLY_ERROR) {
  97                         Log(LogInformation, "RedisWriter")
  98                             << "DEL icinga:status:" << typeName << ": " << reply2->str;
  99                 }
 100
 101                 if (reply2->type == REDIS_REPLY_ERROR) {
 102                         freeReplyObject(reply2);
 103                         return;
 104                 }
 105
 106                 freeReplyObject(reply2);
 107
 108                 /* fetch all objects and dump them */
 109                 ConfigType *ctype = dynamic_cast<ConfigType *>(type.get());
 110                 VERIFY(ctype);
 111
 112                 for (const ConfigObject::Ptr& object : ctype->GetObjects()) {
 113                         SendConfigUpdate(object, typeName);
 114                         SendStatusUpdate(object, typeName);
 115                 }
 116         }
 117 }
 118
 119 void RedisWriter::SendConfigUpdate(const ConfigObject::Ptr& object, const String& typeName)
 120 {
 121         AssertOnWorkQueue();
 122
 123         /* Serialize config object attributes */
 124         Dictionary::Ptr objectAttrs = SerializeObjectAttrs(object, FAConfig);
 125
 126         String jsonBody = JsonEncode(objectAttrs);
 127
 128         //TODO: checksum
 129         String objectName = object->GetName();
 130
 131         redisReply *reply = reinterpret_cast<redisReply *>(redisCommand(m_Context, "HSET icinga:config:%s %s %s", typeName.CStr(), objectName.CStr(), jsonBody.CStr()));
 132
 133         if (!reply) {
 134                 redisFree(m_Context);
 135                 m_Context = NULL;
 136                 return;
 137         }
 138
 139         if (reply->type == REDIS_REPLY_STATUS || reply->type == REDIS_REPLY_ERROR) {
 140                 Log(LogInformation, "RedisWriter")
 141                     << "HSET icinga:config:" << typeName << " " << objectName << " " << jsonBody << ": " << reply->str;
 142         }
 143
 144         if (reply->type == REDIS_REPLY_ERROR) {
 145                 freeReplyObject(reply);
 146                 return;
 147         }
 148
 149         freeReplyObject(reply);
 150 }
 151
 152 void RedisWriter::SendStatusUpdate(const ConfigObject::Ptr& object, const String& typeName)
 153 {
 154         AssertOnWorkQueue();
 155
 156         /* Serialize config object attributes */
 157         Dictionary::Ptr objectAttrs = SerializeObjectAttrs(object, FAState);
 158
 159         String jsonBody = JsonEncode(objectAttrs);
 160
 161         //TODO: checksum
 162         String objectName = object->GetName();
 163
 164         redisReply *reply = reinterpret_cast<redisReply *>(redisCommand(m_Context, "HSET icinga:status:%s %s %s", typeName.CStr(), objectName.CStr(), jsonBody.CStr()));
 165
 166         if (!reply) {
 167                 redisFree(m_Context);
 168                 m_Context = NULL;
 169                 return;
 170         }
 171
 172         if (reply->type == REDIS_REPLY_STATUS || reply->type == REDIS_REPLY_ERROR) {
 173                 Log(LogInformation, "RedisWriter")
 174                     << "HSET icinga:status:" << typeName << " " << objectName << " " << jsonBody << ": " << reply->str;
 175         }
 176
 177         if (reply->type == REDIS_REPLY_ERROR) {
 178                 freeReplyObject(reply);
 179                 return;
 180         }
 181
 182         freeReplyObject(reply);
 183 }
 184
 185 Dictionary::Ptr RedisWriter::SerializeObjectAttrs(const Object::Ptr& object, int fieldType)
 186 {
 187         Type::Ptr type = object->GetReflectionType();
 188
 189         std::vector<int> fids;
 190
 191         for (int fid = 0; fid < type->GetFieldCount(); fid++) {
 192                 fids.push_back(fid);
 193         }
 194
 195         Dictionary::Ptr resultAttrs = new Dictionary();
 196
 197         for (int& fid : fids) {
 198                 Field field = type->GetFieldInfo(fid);
 199
 200                 if ((field.Attributes & fieldType) == 0)
 201                         continue;
 202
 203                 Value val = object->GetField(fid);
 204
 205                 /* hide attributes which shouldn't be user-visible */
 206                 if (field.Attributes & FANoUserView)
 207                         continue;
 208
 209                 /* hide internal navigation fields */
 210                 if (field.Attributes & FANavigation && !(field.Attributes & (FAConfig | FAState)))
 211                         continue;
 212
 213                 Value sval = Serialize(val);
 214                 resultAttrs->Set(field.Name, sval);
 215         }
 216
 217         return resultAttrs;
 218 }
 219
 220 void RedisWriter::StateChangedHandler(const ConfigObject::Ptr& object)
 221 {
 222         Type::Ptr type = object->GetReflectionType();
 223
 224         for (const RedisWriter::Ptr& rw : ConfigType::GetObjectsByType<RedisWriter>()) {
 225                 rw->m_WorkQueue.Enqueue(boost::bind(&RedisWriter::SendStatusUpdate, rw.get(), object, type->GetName()));
 226         }
 227 }
 228
 229 void RedisWriter::VarsChangedHandler(const ConfigObject::Ptr& object)
 230 {
 231         Type::Ptr type = object->GetReflectionType();
 232
 233         for (const RedisWriter::Ptr& rw : ConfigType::GetObjectsByType<RedisWriter>()) {
 234                 rw->m_WorkQueue.Enqueue(boost::bind(&RedisWriter::SendConfigUpdate, rw.get(), object, type->GetName()));
 235         }
 236 }
 237
 238 void RedisWriter::VersionChangedHandler(const ConfigObject::Ptr& object)
 239 {
 240         Type::Ptr type = object->GetReflectionType();
 241
 242         for (const RedisWriter::Ptr& rw : ConfigType::GetObjectsByType<RedisWriter>()) {
 243                 rw->m_WorkQueue.Enqueue(boost::bind(&RedisWriter::SendConfigUpdate, rw.get(), object, type->GetName()));
 244         }
 245 }