Yuta HIGUCHI | a1e655a | 2014-01-23 17:43:11 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2013 Stanford University |
| 2 | * |
| 3 | * Permission to use, copy, modify, and distribute this software for any |
| 4 | * purpose with or without fee is hereby granted, provided that the above |
| 5 | * copyright notice and this permission notice appear in all copies. |
| 6 | * |
| 7 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR(S) DISCLAIM ALL WARRANTIES |
| 8 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 9 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL AUTHORS BE LIABLE FOR |
| 10 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 11 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 12 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 13 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 14 | */ |
| 15 | |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 16 | package com.tinkerpop.blueprints.impls.ramcloud; |
| 17 | |
| 18 | import java.io.Serializable; |
| 19 | import java.io.UnsupportedEncodingException; |
| 20 | import java.nio.ByteBuffer; |
| 21 | import java.util.ArrayList; |
| 22 | import java.util.Iterator; |
| 23 | import java.util.List; |
| 24 | import java.util.Map; |
| 25 | import java.util.Set; |
| 26 | import java.util.TreeMap; |
| 27 | |
| 28 | import org.slf4j.Logger; |
| 29 | import org.slf4j.LoggerFactory; |
| 30 | |
| 31 | import com.google.protobuf.InvalidProtocolBufferException; |
| 32 | import com.tinkerpop.blueprints.CloseableIterable; |
| 33 | import com.tinkerpop.blueprints.Element; |
| 34 | import com.tinkerpop.blueprints.Index; |
| 35 | import com.tinkerpop.blueprints.util.ExceptionFactory; |
| 36 | import com.tinkerpop.blueprints.impls.ramcloud.PerfMon; |
| 37 | import com.tinkerpop.blueprints.impls.ramcloud.RamCloudGraphProtos.IndexBlob; |
| 38 | import com.tinkerpop.blueprints.impls.ramcloud.RamCloudGraphProtos.IndexBlob.Builder; |
| 39 | |
| 40 | import edu.stanford.ramcloud.JRamCloud; |
| 41 | |
| 42 | // FIXME Index instance should be representing an Index table, not a IndexTable K-V pair |
| 43 | public class RamCloudIndex<T extends Element> implements Index<T>, Serializable { |
| 44 | |
| 45 | private final static Logger log = LoggerFactory.getLogger(RamCloudGraph.class); |
| 46 | protected RamCloudGraph graph; |
| 47 | private long tableId; |
| 48 | private String indexName; |
| 49 | protected byte[] rcKey; |
| 50 | private Class<T> indexClass; |
| 51 | // FIXME this should not be defined here |
| 52 | private long indexVersion; |
| 53 | |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 54 | public RamCloudIndex(long tableId, String indexName, Object propValue, RamCloudGraph graph, Class<T> indexClass) { |
| 55 | this.tableId = tableId; |
| 56 | this.graph = graph; |
| 57 | this.rcKey = indexToRcKey(indexName, propValue); |
| 58 | this.indexName = indexName; |
| 59 | this.indexClass = indexClass; |
| 60 | } |
| 61 | |
| 62 | public RamCloudIndex(long tableId, byte[] rcKey, RamCloudGraph graph, Class<T> indexClass) { |
| 63 | this.tableId = tableId; |
| 64 | this.graph = graph; |
| 65 | this.rcKey = rcKey; |
| 66 | this.indexName = rcKeyToIndexName(rcKey); |
| 67 | this.indexClass = indexClass; |
| 68 | } |
| 69 | |
| 70 | public boolean exists() { |
| 71 | PerfMon pm = PerfMon.getInstance(); |
| 72 | |
| 73 | try { |
| 74 | JRamCloud.Object vertTableEntry; |
| 75 | JRamCloud vertTable = graph.getRcClient(); |
| 76 | |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 77 | pm.indexread_start("RamCloudIndex exists()"); |
| 78 | vertTableEntry = vertTable.read(tableId, rcKey); |
| 79 | pm.indexread_end("RamCloudIndex exists()"); |
| 80 | indexVersion = vertTableEntry.version; |
| 81 | return true; |
| 82 | } catch (Exception e) { |
| 83 | pm.indexread_end("RamCloudIndex exists()"); |
| 84 | log.debug("IndexTable entry for {} does not exists(): {}@{} [{}]", indexName, new String(rcKey), tableId, this); |
| 85 | return false; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | public void create() { |
| 90 | if (!exists()) { |
| 91 | PerfMon pm = PerfMon.getInstance(); |
| 92 | try { |
| 93 | JRamCloud rcClient = graph.getRcClient(); |
| 94 | JRamCloud.RejectRules rules = rcClient.new RejectRules(); |
| 95 | rules.setExists(); |
| 96 | |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 97 | pm.indexwrite_start("RamCloudIndex create()"); |
| 98 | rcClient.writeRule(tableId, rcKey, ByteBuffer.allocate(0).array(), rules); |
| 99 | pm.indexwrite_end("RamCloudIndex create()"); |
| 100 | } catch (Exception e) { |
| 101 | pm.indexwrite_end("RamCloudIndex create()"); |
| 102 | log.info(toString() + ": Write create index list: ", e); |
| 103 | } |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | public static byte[] indexToRcKey(String key, Object propValue) { |
| 108 | try { |
| 109 | String s = key + "=" + propValue; |
| 110 | return ByteBuffer.allocate(s.getBytes().length).put(s.getBytes("UTF-8")).array(); |
| 111 | } catch (UnsupportedEncodingException ex) { |
| 112 | log.error("indexToRcKey({}, {}) failed with exception {}", key, propValue, ex); |
| 113 | } |
| 114 | return null; |
| 115 | } |
| 116 | |
| 117 | public static String rcKeyToIndexName(byte[] rcKey) { |
| 118 | try { |
| 119 | String s = new String(rcKey, "UTF-8"); |
| 120 | return s.substring(0, s.indexOf('=')); |
| 121 | } catch (UnsupportedEncodingException ex) { |
| 122 | log.error("rcKeyToIndexName({}) failed with exception {}", rcKey, ex); |
| 123 | } |
| 124 | return null; |
| 125 | } |
| 126 | public static String rcKeyToPropName(byte[] rcKey) { |
| 127 | try { |
| 128 | String s = new String(rcKey, "UTF-8"); |
| 129 | return s.substring(s.indexOf('=')+1); |
| 130 | } catch (UnsupportedEncodingException ex) { |
| 131 | log.error("rcKeyToPropName({}) failed with exception {}", rcKey, ex); |
| 132 | } |
| 133 | return null; |
| 134 | } |
| 135 | |
| 136 | @Override |
| 137 | public String getIndexName() { |
| 138 | return this.indexName; |
| 139 | } |
| 140 | |
| 141 | @Override |
| 142 | public Class<T> getIndexClass() { |
| 143 | return this.indexClass; |
| 144 | } |
| 145 | |
| 146 | @Override |
| 147 | public void put(String key, Object value, T element) { |
| 148 | getSetProperty(key, value, element.getId()); |
| 149 | } |
| 150 | |
| 151 | public void getSetProperty(String key, Object propValue, Object elmId) { |
| 152 | if (elmId == null) { |
| 153 | // FIXME Throw appropriate Exception |
| 154 | log.error("Element Id cannot be null"); |
| 155 | return; |
| 156 | //throw ExceptionFactory.vertexIdCanNotBeNull(); |
| 157 | //throw ExceptionFactory.edgeIdCanNotBeNull(); |
| 158 | } |
| 159 | |
| 160 | long startTime = 0; |
| 161 | if (graph.measureBPTimeProp == 1) { |
| 162 | startTime = System.nanoTime(); |
| 163 | } |
| 164 | |
| 165 | create(); |
| 166 | |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 167 | for (int i = 0; i < graph.CONDITIONALWRITE_RETRY_MAX; i++) { |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 168 | Map<Object, List<Object>> map = readIndexPropertyMapFromDB(); |
| 169 | List<Object> values = map.get(propValue); |
| 170 | if (values == null) { |
| 171 | values = new ArrayList<Object>(); |
| 172 | map.put(propValue, values); |
| 173 | } |
| 174 | if (!values.contains(elmId)) { |
| 175 | values.add(elmId); |
| 176 | } |
| 177 | |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 178 | byte[] rcValue = convertIndexPropertyMapToRcBytes(map); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 179 | |
| 180 | if (rcValue.length != 0) { |
| 181 | if (writeWithRules(rcValue)) { |
| 182 | break; |
| 183 | } else { |
| 184 | log.debug("getSetProperty(String {}, Object {}) cond. write failure RETRYING {}", propValue, elmId, i+1); |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 185 | if (i + 1 == graph.CONDITIONALWRITE_RETRY_MAX) { |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 186 | log.error("getSetProperty(String {}, Object {}) cond. write failure Gaveup RETRYING", propValue, elmId); |
| 187 | } |
| 188 | } |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | if (graph.measureBPTimeProp == 1) { |
| 193 | long endTime = System.nanoTime(); |
| 194 | log.error("Performance index setProperty total time {}", endTime - startTime); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | @Override |
| 199 | public CloseableIterable<T> get(String string, Object value) { |
| 200 | // FIXME Do we need this implemented |
| 201 | throw new RuntimeException("Not implemented yet"); |
| 202 | //return getElmIdListForPropValue(value); |
| 203 | } |
| 204 | |
| 205 | @Override |
| 206 | public CloseableIterable<T> query(String string, Object o) { |
| 207 | throw new UnsupportedOperationException("Not supported yet."); |
| 208 | } |
| 209 | |
| 210 | @Override |
| 211 | public long count(String key, Object value) { |
| 212 | Map<Object, List<Object>> map = readIndexPropertyMapFromDB(); |
| 213 | List<Object> values = map.get(value); |
| 214 | if (null == values) { |
| 215 | return 0; |
| 216 | } else { |
| 217 | return values.size(); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | @Override |
| 222 | public void remove(String propName, Object propValue, T element) { |
| 223 | |
| 224 | if (propName == null) { |
| 225 | throw ExceptionFactory.propertyKeyCanNotBeNull(); |
| 226 | } |
| 227 | |
| 228 | if (propName.equals("")) { |
| 229 | throw ExceptionFactory.propertyKeyCanNotBeEmpty(); |
| 230 | } |
| 231 | |
| 232 | if (propName.equals("id")) { |
| 233 | throw ExceptionFactory.propertyKeyIdIsReserved(); |
| 234 | } |
| 235 | |
| 236 | if (!propName.equals(indexName)) { |
| 237 | log.error("Index name mismatch indexName:{}, remove({},{},...). SOMETHING IS WRONG", indexName, propName, propValue); |
| 238 | } |
| 239 | |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 240 | for (int i = 0; i < graph.CONDITIONALWRITE_RETRY_MAX; ++i) { |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 241 | Map<Object, List<Object>> map = readIndexPropertyMapFromDB(); |
| 242 | |
| 243 | if (map.containsKey(propValue)) { |
| 244 | List<Object> idList = map.get(propValue); |
| 245 | if (null != idList) { |
| 246 | idList.remove(element.getId()); |
| 247 | if (idList.isEmpty()) { |
| 248 | log.debug("remove({},{},...) called, and list became empty.", propName, propValue); |
| 249 | map.remove(propValue); |
| 250 | } |
| 251 | } |
| 252 | } else { |
| 253 | // propValue not found |
| 254 | log.warn("remove({},{},...) called on '{}' index table, but was not found on index. SOMETHING MAY BE WRONG", propName, propValue, this.indexName); |
| 255 | // no change to DB so exit now |
| 256 | return; |
| 257 | } |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 258 | byte[] rcValue = convertIndexPropertyMapToRcBytes(map); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 259 | |
| 260 | if (rcValue.length == 0) { |
| 261 | return; |
| 262 | } |
| 263 | |
| 264 | if (writeWithRules(rcValue)) { |
| 265 | break; |
| 266 | } else { |
| 267 | log.debug("remove({}, {}, T element) write failure RETRYING {}", propName, propValue, (i + 1)); |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 268 | if (i + 1 == graph.CONDITIONALWRITE_RETRY_MAX) { |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 269 | log.error("remove({}, {}, T element) write failed completely. gave up RETRYING", propName, propValue); |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | } |
| 275 | |
| 276 | public void removeElement(T element) { |
| 277 | removeElement(this.tableId, element, this.graph); |
| 278 | } |
| 279 | |
| 280 | // FIXME this methods should not be defined here |
| 281 | public <T extends Element> void removeElement(long tableId, T element, RamCloudGraph graph) { |
| 282 | JRamCloud.TableEnumerator tableEnum = graph.getRcClient().new TableEnumerator(tableId); |
| 283 | |
| 284 | while (tableEnum.hasNext()) { |
| 285 | JRamCloud.Object tableEntry = tableEnum.next(); |
| 286 | Map<Object, List<Object>> indexValMap = convertRcBytesToIndexPropertyMap(tableEntry.value); |
| 287 | |
| 288 | boolean madeChange = false; |
| 289 | Iterator<Map.Entry<Object, List<Object>>> indexValMapIt = indexValMap.entrySet().iterator(); |
| 290 | while (indexValMapIt.hasNext()) { |
| 291 | Map.Entry<Object, List<Object>> entry = indexValMapIt.next(); |
| 292 | List<Object> idList = entry.getValue(); |
| 293 | madeChange |= idList.remove(element.getId()); |
| 294 | if (idList.isEmpty()) { |
| 295 | madeChange = true; |
| 296 | indexValMapIt.remove(); |
| 297 | } |
| 298 | } |
| 299 | if (madeChange == false) { |
| 300 | continue; |
| 301 | } |
| 302 | |
| 303 | byte[] rcValue = convertIndexPropertyMapToRcBytes(indexValMap); |
| 304 | if (rcValue.length == 0) { |
| 305 | // nothing to write |
| 306 | continue; |
| 307 | } |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 308 | if (RamCloudWrite.writeWithRules(tableId, tableEntry.key, rcValue, tableEntry.version, graph, RamCloudWrite.PerfMonEnum.INDEXWRITE)) { |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 309 | // cond. write success |
| 310 | continue; |
| 311 | } else { |
| 312 | // cond. write failure |
| 313 | log.debug("removeElement({}, {}, ...) cond. key/value write failure RETRYING", tableId, element ); |
| 314 | // FIXME Dirty hack |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 315 | for (int retry = graph.CONDITIONALWRITE_RETRY_MAX; retry >= 0; --retry) { |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 316 | RamCloudKeyIndex idx = new RamCloudKeyIndex(tableId, tableEntry.key, graph, element.getClass()); |
| 317 | Map<Object, List<Object>> rereadMap = idx.readIndexPropertyMapFromDB(); |
| 318 | |
| 319 | boolean madeChangeOnRetry = false; |
| 320 | Iterator<Map.Entry<Object, List<Object>>> rereadIndexValMapIt = rereadMap.entrySet().iterator(); |
| 321 | while (rereadIndexValMapIt.hasNext()) { |
| 322 | Map.Entry<Object, List<Object>> entry = rereadIndexValMapIt.next(); |
| 323 | List<Object> idList = entry.getValue(); |
| 324 | madeChangeOnRetry |= idList.remove(element.getId()); |
| 325 | if (idList.isEmpty()) { |
| 326 | madeChangeOnRetry = true; |
| 327 | rereadIndexValMapIt.remove(); |
| 328 | } |
| 329 | } |
| 330 | if (madeChangeOnRetry == false) { |
| 331 | log.debug("removeElement({}, {}, ...) no more write required. SOMETHING MAY BE WRONG", tableId, element); |
| 332 | break; |
| 333 | } |
| 334 | |
| 335 | if (idx.writeWithRules(convertIndexPropertyMapToRcBytes(rereadMap))) { |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 336 | log.debug("removeElement({}, {}, ...) cond. key/value {} write failure RETRYING {}", tableId, element, rereadMap, graph.CONDITIONALWRITE_RETRY_MAX - retry); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 337 | // cond. re-write success |
| 338 | break; |
| 339 | } |
| 340 | if (retry == 0) { |
| 341 | log.error("removeElement({}, {}, ...) cond. write failed completely. Gave up RETRYING", tableId, element); |
| 342 | // XXX may be we should throw some kind of exception here? |
| 343 | } |
| 344 | } |
| 345 | } |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | public Map<Object, List<Object>> readIndexPropertyMapFromDB() { |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 350 | JRamCloud.Object propTableEntry; |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 351 | PerfMon pm = PerfMon.getInstance(); |
| 352 | |
| 353 | try { |
| 354 | JRamCloud vertTable = graph.getRcClient(); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 355 | pm.indexread_start("RamCloudIndex readIndexPropertyMapFromDB()"); |
| 356 | propTableEntry = vertTable.read(tableId, rcKey); |
| 357 | pm.indexread_end("RamCloudIndex readIndexPropertyMapFromDB()"); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 358 | indexVersion = propTableEntry.version; |
| 359 | } catch (Exception e) { |
| 360 | pm.indexread_end("RamCloudIndex readIndexPropertyMapFromDB()"); |
| 361 | indexVersion = 0; |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 362 | if (e instanceof JRamCloud.ObjectDoesntExistException) { |
| 363 | return null; |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 364 | } |
| 365 | log.warn("readIndexPropertyMapFromDB() Element does not have a index property table entry! tableId :" + tableId + " indexName : " + indexName + " ", e); |
| 366 | return null; |
| 367 | } |
| 368 | |
| 369 | return convertRcBytesToIndexPropertyMap(propTableEntry.value); |
| 370 | } |
| 371 | |
| 372 | public Map<Object, List<Object>> convertRcBytesToIndexPropertyMap(byte[] byteArray) { |
| 373 | if (byteArray == null) { |
| 374 | log.error("Got a null byteArray argument"); |
| 375 | return null; |
| 376 | } else if (byteArray.length != 0) { |
| 377 | PerfMon pm = PerfMon.getInstance(); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 378 | pm.indexdeser_start("RamCloudIndex convertRcBytesToIndexPropertyMap()"); |
| 379 | IndexBlob blob; |
| 380 | TreeMap<Object, List<Object>> map = new TreeMap<Object, List<Object>>(); |
| 381 | try { |
| 382 | blob = IndexBlob.parseFrom(byteArray); |
| 383 | List const_list = blob.getVertexIdList(); |
| 384 | ArrayList list = new ArrayList<>(const_list); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 385 | map.put(rcKeyToPropName(rcKey), list); |
| 386 | } catch (InvalidProtocolBufferException e) { |
| 387 | log.error("{" + toString() + "}: Read malformed edge list: ", e); |
| 388 | } finally { |
| 389 | pm.indexdeser_end("RamCloudIndex convertRcBytesToIndexPropertyMap()"); |
| 390 | } |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 391 | return map; |
| 392 | } else { |
| 393 | return new TreeMap<Object, List<Object>>(); |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | public static byte[] convertIndexPropertyMapToRcBytes(Map<Object, List<Object>> map) { |
| 398 | PerfMon pm = PerfMon.getInstance(); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 399 | byte[] bytes; |
| 400 | |
| 401 | pm.indexser_start("RamCloudIndex convertIndexPropertyMapToRcBytes()"); |
| 402 | Builder builder = IndexBlob.newBuilder(); |
| 403 | if ( map.values().size() != 0 ) { |
| 404 | List<Long> vtxIds = (List)map.values().iterator().next(); |
| 405 | builder.addAllVertexId(vtxIds); |
| 406 | } |
| 407 | IndexBlob blob = builder.build(); |
| 408 | bytes = blob.toByteArray(); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 409 | pm.indexser_end("RamCloudIndex convertIndexPropertyMapToRcBytes()"); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 410 | return bytes; |
| 411 | } |
| 412 | |
| 413 | protected boolean writeWithRules(byte[] rcValue) { |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 414 | return RamCloudWrite.writeWithRules(this.tableId, this.rcKey, rcValue, this.indexVersion, this.graph, RamCloudWrite.PerfMonEnum.INDEXWRITE); |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 415 | } |
| 416 | |
| 417 | public List<Object> getElmIdListForPropValue(Object propValue) { |
| 418 | Map<Object, List<Object>> map = readIndexPropertyMapFromDB(); |
| 419 | if (map == null) { |
| 420 | log.debug("IndexPropertyMap was null. {} : {}", indexName, propValue); |
| 421 | return null; |
| 422 | } |
| 423 | return map.get(propValue); |
| 424 | } |
| 425 | |
| 426 | public Set<Object> getIndexPropertyKeys() { |
| 427 | Map<Object, List<Object>> map = readIndexPropertyMapFromDB(); |
| 428 | return map.keySet(); |
| 429 | } |
| 430 | |
| 431 | public <T> T removeIndexProperty(String key) { |
Yoshi Muroi | 815c7f9 | 2014-01-30 18:06:16 -0800 | [diff] [blame^] | 432 | for (int i = 0; i < graph.CONDITIONALWRITE_RETRY_MAX; ++i) { |
yoshi | 28bac13 | 2014-01-22 11:00:17 -0800 | [diff] [blame] | 433 | Map<Object, List<Object>> map = readIndexPropertyMapFromDB(); |
| 434 | T retVal = (T) map.remove(key); |
| 435 | byte[] rcValue = convertIndexPropertyMapToRcBytes(map); |
| 436 | if (rcValue.length != 0) { |
| 437 | if (writeWithRules(rcValue)) { |
| 438 | return retVal; |
| 439 | } else { |
| 440 | log.debug("removeIndexProperty({}) cond. key/value write failure RETRYING {}", tableId, (i + 1)); |
| 441 | } |
| 442 | } |
| 443 | } |
| 444 | log.error("removeIndexProperty({}) cond. key/value write failure gave up RETRYING", tableId); |
| 445 | // XXX ?Is this correct |
| 446 | return null; |
| 447 | } |
| 448 | |
| 449 | public void removeIndex() { |
| 450 | log.info("Removing Index: {} was version {} [{}]", indexName, indexVersion, this); |
| 451 | graph.getRcClient().remove(tableId, rcKey); |
| 452 | } |
| 453 | } |