authz-cass/src/main/java/com/att/dao/aaf/cass/CacheInfoDAO.java

   1 /*******************************************************************************\r
   2  * ============LICENSE_START====================================================\r
   3  * * org.onap.aaf\r
   4  * * ===========================================================================\r
   5  * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.\r
   6  * * ===========================================================================\r
   7  * * Licensed under the Apache License, Version 2.0 (the "License");\r
   8  * * you may not use this file except in compliance with the License.\r
   9  * * You may obtain a copy of the License at\r
  10  * * \r
  11  *  *      http://www.apache.org/licenses/LICENSE-2.0\r
  12  * * \r
  13  *  * Unless required by applicable law or agreed to in writing, software\r
  14  * * distributed under the License is distributed on an "AS IS" BASIS,\r
  15  * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  16  * * See the License for the specific language governing permissions and\r
  17  * * limitations under the License.\r
  18  * * ============LICENSE_END====================================================\r
  19  * *\r
  20  * * ECOMP is a trademark and service mark of AT&T Intellectual Property.\r
  21  * *\r
  22  ******************************************************************************/\r
  23 package com.att.dao.aaf.cass;\r
  24 \r
  25 import java.io.IOException;\r
  26 import java.net.HttpURLConnection;\r
  27 import java.net.URI;\r
  28 import java.util.Date;\r
  29 import java.util.HashMap;\r
  30 import java.util.HashSet;\r
  31 import java.util.Map;\r
  32 import java.util.Map.Entry;\r
  33 import java.util.concurrent.BlockingQueue;\r
  34 import java.util.concurrent.ConcurrentHashMap;\r
  35 import java.util.concurrent.LinkedBlockingQueue;\r
  36 import java.util.concurrent.TimeUnit;\r
  37 \r
  38 import com.att.authz.env.AuthzEnv;\r
  39 import com.att.authz.env.AuthzTrans;\r
  40 import com.att.authz.layer.Result;\r
  41 import com.att.cadi.CadiException;\r
  42 import com.att.cadi.SecuritySetter;\r
  43 import com.att.cadi.client.Future;\r
  44 import com.att.cadi.client.Rcli;\r
  45 import com.att.cadi.client.Retryable;\r
  46 import com.att.cadi.http.HMangr;\r
  47 import com.att.dao.AbsCassDAO;\r
  48 import com.att.dao.CIDAO;\r
  49 import com.att.dao.CassAccess;\r
  50 import com.att.dao.CassDAOImpl;\r
  51 import com.att.dao.Loader;\r
  52 import com.att.inno.env.APIException;\r
  53 import com.att.inno.env.Env;\r
  54 import com.att.inno.env.TimeTaken;\r
  55 import com.att.inno.env.Trans;\r
  56 import com.datastax.driver.core.BoundStatement;\r
  57 import com.datastax.driver.core.Cluster;\r
  58 import com.datastax.driver.core.ResultSet;\r
  59 import com.datastax.driver.core.Row;\r
  60 import com.datastax.driver.core.exceptions.DriverException;\r
  61 \r
  62 public class CacheInfoDAO extends CassDAOImpl<AuthzTrans,CacheInfoDAO.Data> implements CIDAO<AuthzTrans> {\r
  63 \r
  64         private static final String TABLE = "cache";\r
  65         public static final Map<String,Date[]> info = new ConcurrentHashMap<String,Date[]>();\r
  66 \r
  67         private static CacheUpdate cacheUpdate;\r
  68         \r
  69         \r
  70         private BoundStatement check;\r
  71         // Hold current time stamps from Tables\r
  72         private final Date startTime;\r
  73         \r
  74         public CacheInfoDAO(AuthzTrans trans, Cluster cluster, String keyspace) throws APIException, IOException {\r
  75                 super(trans, CacheInfoDAO.class.getSimpleName(),cluster,keyspace,Data.class,TABLE,readConsistency(trans,TABLE), writeConsistency(trans,TABLE));\r
  76                 startTime = new Date();\r
  77                 init(trans);\r
  78         }\r
  79 \r
  80         public CacheInfoDAO(AuthzTrans trans, AbsCassDAO<AuthzTrans,?> aDao) throws APIException, IOException {\r
  81                 super(trans, CacheInfoDAO.class.getSimpleName(),aDao,Data.class,TABLE,readConsistency(trans,TABLE), writeConsistency(trans,TABLE));\r
  82                 startTime = new Date();\r
  83                 init(trans);\r
  84         }\r
  85 \r
  86 \r
  87     //////////////////////////////////////////\r
  88     // Data Definition, matches Cassandra DM\r
  89     //////////////////////////////////////////\r
  90     private static final int KEYLIMIT = 2;\r
  91         /**\r
  92      */\r
  93         public static class Data {\r
  94                 public Data() {\r
  95                         name = null;\r
  96                         touched = null;\r
  97                 }\r
  98                 public Data(String name, int seg) {\r
  99                         this.name = name;\r
 100                         this.seg = seg;\r
 101                         touched = null;\r
 102                 }\r
 103                 \r
 104                 public String           name;\r
 105                 public int                      seg;\r
 106                 public Date                     touched;\r
 107     }\r
 108 \r
 109     private static class InfoLoader extends Loader<Data> {\r
 110         public static final InfoLoader dflt = new InfoLoader(KEYLIMIT);\r
 111         \r
 112                 public InfoLoader(int keylimit) {\r
 113                         super(keylimit);\r
 114                 }\r
 115                 \r
 116                 @Override\r
 117                 public Data load(Data data, Row row) {\r
 118                         // Int more efficient\r
 119                         data.name = row.getString(0);\r
 120                         data.seg = row.getInt(1);\r
 121                         data.touched = row.getDate(2);\r
 122                         return data;\r
 123                 }\r
 124 \r
 125                 @Override\r
 126                 protected void key(Data data, int _idx, Object[] obj) {\r
 127                         int idx = _idx;\r
 128 \r
 129                         obj[idx]=data.name;\r
 130                         obj[++idx]=data.seg;\r
 131                 }\r
 132 \r
 133                 @Override\r
 134                 protected void body(Data data, int idx, Object[] obj) {\r
 135                         obj[idx]=data.touched;\r
 136                 }\r
 137     }\r
 138     \r
 139         public static<T extends Trans> void startUpdate(AuthzEnv env, HMangr hman, SecuritySetter<HttpURLConnection> ss, String ip, int port) {\r
 140                 if(cacheUpdate==null) {\r
 141                         Thread t= new Thread(cacheUpdate = new CacheUpdate(env,hman,ss, ip,port),"CacheInfo Update Thread");\r
 142                         t.setDaemon(true);\r
 143                         t.start();\r
 144                 }\r
 145         }\r
 146 \r
 147         public static<T extends Trans> void stopUpdate() {\r
 148                 if(cacheUpdate!=null) {\r
 149                         cacheUpdate.go=false;\r
 150                 }\r
 151         }\r
 152 \r
 153         private final static class CacheUpdate extends Thread {\r
 154                 public static BlockingQueue<Transfer> notifyDQ = new LinkedBlockingQueue<Transfer>(2000);\r
 155 \r
 156                 private static final String VOID_CT="application/Void+json;q=1.0;charset=utf-8;version=2.0,application/json;q=1.0;version=2.0,*/*;q=1.0";\r
 157                 private AuthzEnv env;\r
 158                 private HMangr hman;\r
 159                 private SecuritySetter<HttpURLConnection> ss;\r
 160                 private final String authority;\r
 161                 public boolean go = true;\r
 162                 \r
 163                 public CacheUpdate(AuthzEnv env, HMangr hman, SecuritySetter<HttpURLConnection> ss, String ip, int port) {\r
 164                         this.env = env;\r
 165                         this.hman = hman;\r
 166                         this.ss = ss;\r
 167                         \r
 168                         this.authority = ip+':'+port;\r
 169                 }\r
 170                 \r
 171                 private static class Transfer {\r
 172                         public String table;\r
 173                         public int segs[];\r
 174                         public Transfer(String table, int[] segs)  {\r
 175                                 this.table = table;\r
 176                                 this.segs = segs;\r
 177                         }\r
 178                 }\r
 179                 private class CacheClear extends Retryable<Integer> {\r
 180                         public int total=0;\r
 181                         private AuthzTrans trans;\r
 182                         private String type;\r
 183                         private String segs;\r
 184                         \r
 185                         public CacheClear(AuthzTrans trans) {\r
 186                                 this.trans = trans;\r
 187                         }\r
 188 \r
 189                         public void set(Entry<String, IntHolder> es) {\r
 190                                 type = es.getKey();\r
 191                                 segs = es.getValue().toString();\r
 192                         }\r
 193                         \r
 194                 @Override\r
 195                         public Integer code(Rcli<?> client) throws APIException, CadiException {\r
 196                                 URI to = client.getURI();\r
 197                                 if(!to.getAuthority().equals(authority)) {\r
 198                                         Future<Void> f = client.delete("/mgmt/cache/"+type+'/'+segs,VOID_CT);\r
 199                                         if(f.get(hman.readTimeout())) {\r
 200                                             ++total;\r
 201                                         } else {\r
 202                                             trans.error().log("Error During AAF Peer Notify",f.code(),f.body());\r
 203                                         }\r
 204                                 }\r
 205                                 return total;\r
 206                         }\r
 207                 }\r
 208                 \r
 209                 private class IntHolder {\r
 210                         private int[] raw;\r
 211                         HashSet<Integer> set;\r
 212                         \r
 213                         public IntHolder(int ints[]) {\r
 214                                 raw = ints;\r
 215                                 set = null;\r
 216                         }\r
 217                         public void add(int[] ints) {\r
 218                                 if(set==null) {\r
 219                                         set = new HashSet<Integer>();\r
 220                                         \r
 221                                         for(int i=0;i<raw.length;++i) {\r
 222                                                 set.add(raw[i]);\r
 223                                         }\r
 224                                 }\r
 225                                 for(int i=0;i<ints.length;++i) {\r
 226                                         set.add(ints[i]);\r
 227                                 }\r
 228                         }\r
 229 \r
 230                         @Override\r
 231                         public String toString() {\r
 232                                 StringBuilder sb = new StringBuilder();\r
 233                                 boolean first = true;\r
 234                                 if(set==null) {\r
 235                                         for(int i : raw) {\r
 236                                                 if(first) {\r
 237                                                         first=false;\r
 238                                                 } else {\r
 239                                                         sb.append(',');\r
 240                                                 }\r
 241                                                 sb.append(i);\r
 242                                         }\r
 243                                 } else {\r
 244                                         for(Integer i : set) {\r
 245                                                 if(first) {\r
 246                                                         first=false;\r
 247                                                 } else {\r
 248                                                         sb.append(',');\r
 249                                                 }\r
 250                                                 sb.append(i);\r
 251                                         }\r
 252                                 }\r
 253                                 return sb.toString();\r
 254                         }\r
 255                 }\r
 256                 \r
 257                 @Override\r
 258                 public void run() {\r
 259                         do {\r
 260                                 try {\r
 261                                         Transfer data = notifyDQ.poll(4,TimeUnit.SECONDS);\r
 262                                         if(data==null) {\r
 263                                                 continue;\r
 264                                         }\r
 265                                         \r
 266                                         int count = 0;\r
 267                                         CacheClear cc = null;\r
 268                                         Map<String,IntHolder> gather = null;\r
 269                                         AuthzTrans trans = null;\r
 270                                         long start=0;\r
 271                                         // Do a block poll first\r
 272                                         do {\r
 273                                                 if(gather==null) {\r
 274                                                         start = System.nanoTime();\r
 275                                                         trans = env.newTransNoAvg();\r
 276                                                         cc = new CacheClear(trans);\r
 277                                                         gather = new HashMap<String,IntHolder>();\r
 278                                                 }\r
 279                                                 IntHolder prev = gather.get(data.table);\r
 280                                                 if(prev==null) {\r
 281                                                         gather.put(data.table,new IntHolder(data.segs));\r
 282                                                 } else {\r
 283                                                         prev.add(data.segs);\r
 284                                                 }\r
 285                                                 // continue while there is data\r
 286                                         } while((data = notifyDQ.poll())!=null);\r
 287                                         if(gather!=null) {\r
 288                                                 for(Entry<String, IntHolder> es : gather.entrySet()) {\r
 289                                                         cc.set(es);\r
 290                                                         try {\r
 291                                                                 if(hman.all(ss, cc, false)!=null) {\r
 292                                                                         ++count;\r
 293                                                                 }\r
 294                                                         } catch (Exception e) {\r
 295                                                                 trans.error().log(e, "Error on Cache Update");\r
 296                                                         }\r
 297                                                 }\r
 298                                                 if(env.debug().isLoggable()) {\r
 299                                                         float millis = (System.nanoTime()-start)/1000000f;\r
 300                                                         StringBuilder sb = new StringBuilder("Direct Cache Refresh: ");\r
 301                                                         sb.append("Updated ");\r
 302                                                         sb.append(count);\r
 303                                                         if(count==1) {\r
 304                                                                 sb.append(" entry for ");\r
 305                                                         } else { \r
 306                                                                 sb.append(" entries for ");\r
 307                                                         }\r
 308                                                         int peers = count<=0?0:cc.total/count;\r
 309                                                         sb.append(peers);\r
 310                                                         sb.append(" client");\r
 311                                                         if(peers!=1) {\r
 312                                                                 sb.append('s');\r
 313                                                         }\r
 314                                                         sb.append(" in ");\r
 315                                                         sb.append(millis);\r
 316                                                         sb.append("ms");\r
 317                                                         trans.auditTrail(0, sb, Env.REMOTE);\r
 318                                                         env.debug().log(sb);\r
 319                                                 }\r
 320                                         }\r
 321                                 } catch (InterruptedException e1) {\r
 322                                         go = false;\r
 323                                 }\r
 324                         } while(go);\r
 325                 }\r
 326         }\r
 327 \r
 328         private void init(AuthzTrans trans) throws APIException, IOException {\r
 329                 \r
 330                 String[] helpers = setCRUD(trans, TABLE, Data.class, InfoLoader.dflt);\r
 331                 check = getSession(trans).prepare(SELECT_SP +  helpers[FIELD_COMMAS] + " FROM " + TABLE).bind();\r
 332 \r
 333                 disable(CRUD.create);\r
 334                 disable(CRUD.delete);\r
 335         }\r
 336 \r
 337         /* (non-Javadoc)\r
 338          * @see com.att.dao.aaf.cass.CIDAO#touch(com.att.authz.env.AuthzTrans, java.lang.String, int)\r
 339          */\r
 340         \r
 341         @Override\r
 342         public Result<Void> touch(AuthzTrans trans, String name, int ... seg) {\r
 343                 /////////////\r
 344                 // Direct Service Cache Invalidation\r
 345                 /////////////\r
 346                 // ConcurrentQueues are open-ended.  We don't want any Memory leaks \r
 347                 // Note: we keep a separate counter, because "size()" on a Linked Queue is expensive\r
 348                 if(cacheUpdate!=null) {\r
 349                         try {\r
 350                                 if(!CacheUpdate.notifyDQ.offer(new CacheUpdate.Transfer(name, seg),2,TimeUnit.SECONDS)) {\r
 351                                         trans.error().log("Cache Notify Queue is not accepting messages, bouncing may be appropriate" );\r
 352                                 }\r
 353                         } catch (InterruptedException e) {\r
 354                                 trans.error().log("Cache Notify Queue posting was interrupted" );\r
 355                         }\r
 356                 }\r
 357 \r
 358                 /////////////\r
 359                 // Table Based Cache Invalidation (original)\r
 360                 /////////////\r
 361                 // Note: Save time with multiple Sequence Touches, but PreparedStmt doesn't support IN\r
 362                 StringBuilder start = new StringBuilder("CacheInfoDAO Touch segments ");\r
 363                 start.append(name);\r
 364                 start.append(": ");\r
 365                 StringBuilder sb = new StringBuilder("BEGIN BATCH\n");\r
 366                 boolean first = true;\r
 367                 for(int s : seg) {\r
 368                         sb.append(UPDATE_SP);\r
 369                         sb.append(TABLE);\r
 370                         sb.append(" SET touched=dateof(now()) WHERE name = '");\r
 371                         sb.append(name);\r
 372                         sb.append("' AND seg = ");\r
 373                         sb.append(s);\r
 374                         sb.append(";\n");       \r
 375                         if(first) {\r
 376                                 first =false;\r
 377                         } else {\r
 378                                 start.append(',');\r
 379                         }\r
 380                         start.append(s);\r
 381                 }\r
 382                 sb.append("APPLY BATCH;");\r
 383                 TimeTaken tt = trans.start(start.toString(),Env.REMOTE);\r
 384                 try {\r
 385                         getSession(trans).executeAsync(sb.toString());\r
 386                 } catch (DriverException | APIException | IOException e) {\r
 387                         reportPerhapsReset(trans,e);\r
 388                         return Result.err(Result.ERR_Backend, CassAccess.ERR_ACCESS_MSG);\r
 389                 } finally {\r
 390                         tt.done();\r
 391                 }\r
 392                 return Result.ok();\r
 393         }\r
 394 \r
 395         /* (non-Javadoc)\r
 396          * @see com.att.dao.aaf.cass.CIDAO#check(com.att.authz.env.AuthzTrans)\r
 397          */\r
 398         @Override\r
 399         public Result<Void> check(AuthzTrans trans) {\r
 400                 ResultSet rs;\r
 401                 TimeTaken tt = trans.start("Check Table Timestamps",Env.REMOTE);\r
 402                 try {\r
 403                         rs = getSession(trans).execute(check);\r
 404                 } catch (DriverException | APIException | IOException e) {\r
 405                         reportPerhapsReset(trans,e);\r
 406                         return Result.err(Result.ERR_Backend, CassAccess.ERR_ACCESS_MSG);\r
 407                 } finally {\r
 408                         tt.done();\r
 409                 }\r
 410                 \r
 411                 String lastName = null;\r
 412                 Date[] dates = null;\r
 413                 for(Row row : rs.all()) {\r
 414                         String name = row.getString(0);\r
 415                         int seg = row.getInt(1);\r
 416                         if(!name.equals(lastName)) {\r
 417                                 dates = info.get(name);\r
 418                                 lastName=name;\r
 419                         }\r
 420                         if(dates==null) {\r
 421                                 dates=new Date[seg+1];\r
 422                                 info.put(name,dates);\r
 423                         } else if(dates.length<=seg) {\r
 424                                 Date[] temp = new Date[seg+1];\r
 425                                 System.arraycopy(dates, 0, temp, 0, dates.length);\r
 426                                 dates = temp;\r
 427                                 info.put(name, dates);\r
 428                         }\r
 429                         Date temp = row.getDate(2);\r
 430                         if(dates[seg]==null || dates[seg].before(temp)) {\r
 431                                 dates[seg]=temp;\r
 432                         }\r
 433                 }\r
 434                 return Result.ok();\r
 435         }\r
 436         \r
 437     /* (non-Javadoc)\r
 438          * @see com.att.dao.aaf.cass.CIDAO#get(java.lang.String, int)\r
 439          */\r
 440     @Override\r
 441         public Date get(AuthzTrans trans, String table, int seg) {\r
 442                 Date[] dates = info.get(table);\r
 443                 if(dates==null) {\r
 444                         dates = new Date[seg+1];\r
 445                         touch(trans,table, seg);\r
 446                 } else if(dates.length<=seg) {\r
 447                         Date[] temp = new Date[seg+1];\r
 448                         System.arraycopy(dates, 0, temp, 0, dates.length);\r
 449                         dates = temp;\r
 450                 }\r
 451                 Date rv = dates[seg];\r
 452                 if(rv==null) {\r
 453                         rv=dates[seg]=startTime;\r
 454                 }\r
 455                 return rv;\r
 456         }\r
 457 \r
 458         @Override\r
 459         protected void wasModified(AuthzTrans trans, CRUD modified, Data data, String ... override) {\r
 460                 // Do nothing\r
 461         }\r
 462 \r
 463 }\r