Examples of org.serviceconnector.cache.SCCacheMetaEntry

org.serviceconnector.cache.SCCacheMetaEntry
The Class SCCacheMetaEntry. The cache meta entry instances are stored in META_DATA_CACHE. It represents either a single message or a group of part messages they belong to a large response. Meta entries are identified by the cache id. SCMPMessages in DATA_CACHE are identified by cacheId/partnNr. The meta entry controls the state of the message. Loading means storing the message in cache has started but is not completed yet. Meta entry count number of parts, saves loading session id and lots of other meta data. The state Loading marks a message to be ready for delivery out of the cache.

    int endIndex = paging.getEndIndex();


    for (int i = startIndex; i < endIndex; i++) {
      String key = cacheKeys.get(i);
      if (cache.getCacheName().equals(SC_CACHE_TYPE.META_DATA_CACHE.name())) {
        SCCacheMetaEntry metaEntry = (SCCacheMetaEntry) cache.get(key);
        if (metaEntry == null && simulation > 0) {
          metaEntry = new SCCacheMetaEntry("");
        }
        if (metaEntry != null) {
          writeCacheMetaEntry(writer, cache, key, metaEntry, request);
        }
      } else {

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    if (scCache == null) {
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.CACHE_ERROR, serviceName);
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    SCCacheMetaEntry metaEntry = (SCCacheMetaEntry) scCache.get(cacheKey);
    if (metaEntry == null) {
      return URLString.toURLResponseString(Constants.CACHE_ID, cacheKey, "return", "notfound");
    }
    SC_CACHE_ENTRY_STATE cacheState = metaEntry.getSCCacheEntryState();
    Date creationTime = metaEntry.getCreationTime();
    Date lastModifiedTime = metaEntry.getLastModifiedTime();
    String expirationDateTime = DateTimeUtility.getDateTimeAsString(scCache.getExpirationTime(cacheKey));
    int size = metaEntry.getNumberOfParts();
    Map<String, String> parameters = new HashMap<String, String>();
    parameters.put("return", "success");
    parameters.put(Constants.CACHE_ID, metaEntry.getCacheId());
    parameters.put("cacheState", cacheState.toString());
    parameters.put("cacheSize", String.valueOf(size));
    parameters.put("cacheExpiration", expirationDateTime);
    parameters.put("creationTime", DateTimeUtility.getDateTimeAsString(creationTime));
    parameters.put("lastModifiedTime", DateTimeUtility.getDateTimeAsString(lastModifiedTime));

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          writer.writeAttribute("bodyLength", scmp.getBodyLength());
          writer.writeAttribute("expirationTime", DateTimeUtility.getDateTimeAsString(scCache.getExpirationTime(key)));
          writer.writeAttribute("creationTime", DateTimeUtility.getDateTimeAsString(scCache.getCreationTime(key)));
          writer.writeAttribute("lastAccessTime", DateTimeUtility.getDateTimeAsString(scCache.getLastAccessTime(key)));
        } else if (cacheMessage instanceof SCCacheMetaEntry) {
          SCCacheMetaEntry metaEntry = ((SCCacheMetaEntry) cacheMessage);
          writer.writeAttribute("cacheKey", key);
          writer.writeAttribute("loadingSessionId", metaEntry.getLoadingSessionId());
          writer.writeAttribute("loadingTimeoutMillis", metaEntry.getLoadingTimeoutMillis());
          writer.writeAttribute("scCacheEntryState", metaEntry.getSCCacheEntryState().name());
          writer.writeAttribute("numberOfParts", metaEntry.getNumberOfParts());
          writer.writeAttribute("expirationTime", DateTimeUtility.getDateTimeAsString(scCache.getExpirationTime(key)));
          writer.writeAttribute("creationTime", DateTimeUtility.getDateTimeAsString(scCache.getCreationTime(key)));
          writer.writeAttribute("lastModifiedTime", DateTimeUtility.getDateTimeAsString(metaEntry.getLastModifiedTime()));
          writer.writeAttribute("lastAccessTime", DateTimeUtility.getDateTimeAsString(scCache.getLastAccessTime(key)));
        }
        writer.writeEndElement(); // end of cacheElement
      }
      writer.writeEndElement(); // end of cacheElements

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    } else if (objectValue instanceof SCMPMessage) {
      SCMPMessage copiedSCMPMsg = null;
      copiedSCMPMsg = new SCMPMessage((SCMPMessage) objectValue);
      return (T) copiedSCMPMsg;
    } else if (objectValue instanceof SCCacheMetaEntry) {
      SCCacheMetaEntry copiedMetaEntry = null;
      copiedMetaEntry = new SCCacheMetaEntry((SCCacheMetaEntry) objectValue);
      return (T) copiedMetaEntry;
    } else {
      LOGGER.error("Unexpected instance copy procedure not properly done!");
      return (T) objectValue;
    }

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    if (value instanceof SCMPPart) {
      value = (T) new SCMPPart((SCMPPart) value);
    } else if (value instanceof SCMPMessage) {
      value = (T) new SCMPMessage((SCMPMessage) value);
    } else if (value instanceof SCCacheMetaEntry) {
      value = (T) new SCCacheMetaEntry((SCCacheMetaEntry) value);
    } else {
      LOGGER.error("Unexpected instance copy procedure not properly done!");
    }


    // key, value, eternal, timeToIdle (0 = unlimited), timeToLive

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    if (value instanceof SCMPPart) {
      value = (T) new SCMPPart((SCMPPart) value);
    } else if (value instanceof SCMPMessage) {
      value = (T) new SCMPMessage((SCMPMessage) value);
    } else if (value instanceof SCCacheMetaEntry) {
      value = (T) new SCCacheMetaEntry((SCCacheMetaEntry) value);
    } else {
      LOGGER.error("Unexpected instance copy procedure not properly done!");
    }
    // key, value, eternal, timeToIdle (0 = unlimited), timeToLive
    Element element = new Element(key, value, false, 0, timeToLiveSeconds);

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  /** {@inheritDoc} */
  @Override
  public void notifyElementExpired(Ehcache cache, Element element) {
    Object entry = element.getValue();
    if (entry instanceof SCCacheMetaEntry) {
      SCCacheMetaEntry metaEntry = (SCCacheMetaEntry) entry;
      LOGGER.debug("Cache element of type SCCacheMetaEntry expired, cid: " + metaEntry.getCacheId());
      CacheLogger.messageExpired(metaEntry.getCacheId());
      AppContext.getSCCache().removeDataEntriesByMetaEntry(metaEntry, "Meta Entry expired!");
      Statistics.getInstance().decrementMessagesInCache();
    } else if (entry instanceof byte[]) {
      LOGGER.debug("Cache element of type byte[] expired.");
      try {
        ByteArrayInputStream b = new ByteArrayInputStream((byte[]) entry);
        ObjectInputStream o = new ObjectInputStream(b);
        SCCacheMetaEntry metaEntry = (SCCacheMetaEntry) o.readObject();
        CacheLogger.messageExpired(metaEntry.getCacheId());
        AppContext.getSCCache().removeDataEntriesByMetaEntry((SCCacheMetaEntry) metaEntry, "Meta Entry expired!");
        Statistics.getInstance().decrementMessagesInCache();
      } catch (Exception e) {
        LOGGER.error("Deserializing of byte[] failed: " + e);
      }

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    int endIndex = paging.getEndIndex();


    for (int i = startIndex; i < endIndex; i++) {
      String key = cacheKeys.get(i);
      if (cacheModule.getCacheModuleName().equals(SC_CACHE_MODULE_TYPE.META_DATA_CACHE_MODULE.name())) {
        SCCacheMetaEntry metaEntry = (SCCacheMetaEntry) cacheModule.get(key);
        if (metaEntry == null && simulation > 0) {
          metaEntry = new SCCacheMetaEntry("");
        }
        if (metaEntry != null) {
          writeCacheMetaEntry(writer, cacheModule, key, metaEntry, request);
        }
      } else {

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    if (scCacheModule == null) {
      SCMPCommandException scmpCommandException = new SCMPCommandException(SCMPError.CACHE_ERROR, serviceName);
      scmpCommandException.setMessageType(getKey());
      throw scmpCommandException;
    }
    SCCacheMetaEntry metaEntry = (SCCacheMetaEntry) scCacheModule.get(cacheKey);
    if (metaEntry == null) {
      return URLString.toURLResponseString(Constants.CACHE_ID, cacheKey, "return", "notfound");
    }
    SC_CACHE_ENTRY_STATE cacheState = metaEntry.getSCCacheEntryState();
    Date creationTime = metaEntry.getCreationTime();
    Date lastModifiedTime = metaEntry.getLastModifiedTime();
    String expirationDateTime = DateTimeUtility.getDateTimeAsString(scCacheModule.getExpirationTime(cacheKey));
    String assignedUpdateGuardian = metaEntry.getCacheGuardianName();
    String partInfo = metaEntry.nrOfPartsByAppendixAsString();
    int nrOfAppendix = metaEntry.getNrOfAppendix();
    Map<String, String> parameters = new HashMap<String, String>();
    parameters.put("return", "success");
    parameters.put(Constants.CACHE_ID, metaEntry.getCacheId());
    parameters.put("cacheMessageState", cacheState.toString());
    parameters.put("cacheMessagePartInfo", partInfo);
    parameters.put("cacheMessageNrOfAppendix", String.valueOf(nrOfAppendix));
    parameters.put("cacheMessageAssignedUpdateGuardian", assignedUpdateGuardian);
    parameters.put("cacheMessageExpiration", expirationDateTime);

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          writer.writeAttribute("bodyLength", scmp.getBodyLength());
          writer.writeAttribute("expirationTime", DateTimeUtility.getDateTimeAsString(scCache.getExpirationTime(key)));
          writer.writeAttribute("creationTime", DateTimeUtility.getDateTimeAsString(scCache.getCreationTime(key)));
          writer.writeAttribute("lastAccessTime", DateTimeUtility.getDateTimeAsString(scCache.getLastAccessTime(key)));
        } else if (cacheMessage instanceof SCCacheMetaEntry) {
          SCCacheMetaEntry metaEntry = ((SCCacheMetaEntry) cacheMessage);
          writer.writeAttribute("cacheKey", key);
          writer.writeAttribute("loadingSessionId", metaEntry.getLoadingSessionId());
          writer.writeAttribute("loadingTimeoutMillis", metaEntry.getLoadingTimeoutMillis());
          writer.writeAttribute("scCacheEntryState", metaEntry.getSCCacheEntryState().name());
          writer.writeAttribute("numberOfAppendix", metaEntry.getNrOfAppendix());
          writer.writeAttribute("cacheGuardian", metaEntry.getCacheGuardianName());
          if (metaEntry.getSCCacheEntryState() == SC_CACHE_ENTRY_STATE.LOADING_APPENDIX) {
            writer.writeAttribute("expectedAppendix", metaEntry.getExpectedAppendix());
          }
          writer.writeAttribute("isManaged", metaEntry.isManaged());
          writer.writeAttribute("expirationTime", DateTimeUtility.getDateTimeAsString(scCache.getExpirationTime(key)));
          writer.writeAttribute("creationTime", DateTimeUtility.getDateTimeAsString(scCache.getCreationTime(key)));
          writer.writeAttribute("lastModifiedTime", DateTimeUtility.getDateTimeAsString(metaEntry.getLastModifiedTime()));
          writer.writeAttribute("lastAccessTime", DateTimeUtility.getDateTimeAsString(scCache.getLastAccessTime(key)));
        }
        writer.writeEndElement(); // end of cacheElement
      }
      writer.writeEndElement(); // end of cacheElements

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Related Classes of org.serviceconnector.cache.SCCacheMetaEntry

org.serviceconnector.cache.ehcache.EhCacheEventListener

org.serviceconnector.cache.ehcache.EHCacheImpl

org.serviceconnector.cmd.sc.InspectCommand

org.serviceconnector.registry.CacheModuleRegistry

org.serviceconnector.registry.CacheRegistry

org.serviceconnector.web.xml.CacheXMLLoader

java.util.Date

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