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         //TODO: Just use config types
  59         for (const Type::Ptr& type : Type::GetAllTypes()) {
  60                 if (!ConfigObject::TypeInstance->IsAssignableFrom(type))
  61                         continue;
  62
  63                 String typeName = type->GetName();
  64
  65                 /* replace into aka delete insert is faster than a full diff */
  66                 redisReply *reply1 = reinterpret_cast<redisReply *>(redisCommand(m_Context, "DEL icinga:config:%s", typeName.CStr()));
  67
  68                 if (!reply1) {
  69                         redisFree(m_Context);
  70                         m_Context = NULL;
  71                         return;
  72                 }
  73
  74                 if (reply1->type == REDIS_REPLY_STATUS || reply1->type == REDIS_REPLY_ERROR) {
  75                         Log(LogInformation, "RedisWriter")
  76                             << "DEL icinga:config:" << typeName << ": " << reply1->str;
  77                 }
  78
  79                 if (reply1->type == REDIS_REPLY_ERROR) {
  80                         freeReplyObject(reply1);
  81                         return;
  82                 }
  83
  84                 freeReplyObject(reply1);
  85
  86                 redisReply *reply2 = reinterpret_cast<redisReply *>(redisCommand(m_Context, "DEL icinga:status:%s", typeName.CStr()));
  87
  88                 if (!reply2) {
  89                         redisFree(m_Context);
  90                         m_Context = NULL;
  91                         return;
  92                 }
  93
  94                 if (reply2->type == REDIS_REPLY_STATUS || reply2->type == REDIS_REPLY_ERROR) {
  95                         Log(LogInformation, "RedisWriter")
  96                             << "DEL icinga:status:" << typeName << ": " << reply2->str;
  97                 }
  98
  99                 if (reply2->type == REDIS_REPLY_ERROR) {
 100                         freeReplyObject(reply2);
 101                         return;
 102                 }
 103
 104                 freeReplyObject(reply2);
 105
 106                 /* fetch all objects and dump them */
 107                 ConfigType *ctype = dynamic_cast<ConfigType *>(type.get());
 108                 VERIFY(ctype);
 109
 110                 for (const ConfigObject::Ptr& object : ctype->GetObjects()) {
 111                         SendConfigUpdate(object, typeName);
 112                         SendStatusUpdate(object, typeName);
 113                 }
 114         }
 115 }
 116
 117 void RedisWriter::SendConfigUpdate(const ConfigObject::Ptr& object, const String& typeName)
 118 {
 119         /* Serialize config object attributes */
 120         Dictionary::Ptr objectAttrs = SerializeObjectAttrs(object, FAConfig);
 121
 122         String jsonBody = JsonEncode(objectAttrs);
 123
 124         //TODO: checksum
 125         String objectName = object->GetName();
 126
 127         redisReply *reply = reinterpret_cast<redisReply *>(redisCommand(m_Context, "HSET icinga:config:%s %s %s", typeName.CStr(), objectName.CStr(), jsonBody.CStr()));
 128
 129         if (!reply) {
 130                 redisFree(m_Context);
 131                 m_Context = NULL;
 132                 return;
 133         }
 134
 135         if (reply->type == REDIS_REPLY_STATUS || reply->type == REDIS_REPLY_ERROR) {
 136                 Log(LogInformation, "RedisWriter")
 137                     << "HSET icinga:config:" << typeName << " " << objectName << " " << jsonBody << ": " << reply->str;
 138         }
 139
 140         if (reply->type == REDIS_REPLY_ERROR) {
 141                 freeReplyObject(reply);
 142                 return;
 143         }
 144
 145         freeReplyObject(reply);
 146 }
 147
 148 void RedisWriter::SendStatusUpdate(const ConfigObject::Ptr& object, const String& typeName)
 149 {
 150         /* Serialize config object attributes */
 151         Dictionary::Ptr objectAttrs = SerializeObjectAttrs(object, FAState);
 152
 153         String jsonBody = JsonEncode(objectAttrs);
 154
 155         //TODO: checksum
 156         String objectName = object->GetName();
 157
 158         redisReply *reply = reinterpret_cast<redisReply *>(redisCommand(m_Context, "HSET icinga:status:%s %s %s", typeName.CStr(), objectName.CStr(), jsonBody.CStr()));
 159
 160         if (!reply) {
 161                 redisFree(m_Context);
 162                 m_Context = NULL;
 163                 return;
 164         }
 165
 166         if (reply->type == REDIS_REPLY_STATUS || reply->type == REDIS_REPLY_ERROR) {
 167                 Log(LogInformation, "RedisWriter")
 168                     << "HSET icinga:status:" << typeName << " " << objectName << " " << jsonBody << ": " << reply->str;
 169         }
 170
 171         if (reply->type == REDIS_REPLY_ERROR) {
 172                 freeReplyObject(reply);
 173                 return;
 174         }
 175
 176         freeReplyObject(reply);
 177 }
 178
 179 Dictionary::Ptr RedisWriter::SerializeObjectAttrs(const Object::Ptr& object, int fieldType)
 180 {
 181         Type::Ptr type = object->GetReflectionType();
 182
 183         std::vector<int> fids;
 184
 185         for (int fid = 0; fid < type->GetFieldCount(); fid++) {
 186                 fids.push_back(fid);
 187         }
 188
 189         Dictionary::Ptr resultAttrs = new Dictionary();
 190
 191         for (int& fid : fids) {
 192                 Field field = type->GetFieldInfo(fid);
 193
 194                 if ((field.Attributes & fieldType) == 0)
 195                         continue;
 196
 197                 Value val = object->GetField(fid);
 198
 199                 /* hide attributes which shouldn't be user-visible */
 200                 if (field.Attributes & FANoUserView)
 201                         continue;
 202
 203                 /* hide internal navigation fields */
 204                 if (field.Attributes & FANavigation && !(field.Attributes & (FAConfig | FAState)))
 205                         continue;
 206
 207                 Value sval = Serialize(val);
 208                 resultAttrs->Set(field.Name, sval);
 209         }
 210
 211         return resultAttrs;
 212 }
 213
 214 void RedisWriter::StateChangedHandler(const ConfigObject::Ptr& object)
 215 {
 216         Type::Ptr type = object->GetReflectionType();
 217
 218         for (const RedisWriter::Ptr& rw : ConfigType::GetObjectsByType<RedisWriter>()) {
 219                 rw->m_WorkQueue.Enqueue(boost::bind(&RedisWriter::SendStatusUpdate, rw.get(), object, type->GetName()));
 220         }
 221 }
 222
 223 void RedisWriter::VarsChangedHandler(const ConfigObject::Ptr& object)
 224 {
 225         Type::Ptr type = object->GetReflectionType();
 226
 227         for (const RedisWriter::Ptr& rw : ConfigType::GetObjectsByType<RedisWriter>()) {
 228                 rw->m_WorkQueue.Enqueue(boost::bind(&RedisWriter::SendConfigUpdate, rw.get(), object, type->GetName()));
 229         }
 230 }
 231
 232 void RedisWriter::VersionChangedHandler(const ConfigObject::Ptr& object)
 233 {
 234         Type::Ptr type = object->GetReflectionType();
 235
 236         for (const RedisWriter::Ptr& rw : ConfigType::GetObjectsByType<RedisWriter>()) {
 237                 rw->m_WorkQueue.Enqueue(boost::bind(&RedisWriter::SendConfigUpdate, rw.get(), object, type->GetName()));
 238         }
 239 }