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author | 2017-02-07 11:47:55 -0500 | |
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committer | 2017-02-07 12:51:32 -0500 | |
commit | 1faf201e8608dfa4d7af3460fd3d1fc7ebec398b (patch) | |
tree | 2208f76271cc6b1a81dbfb9143cd7118b071a909 /ecomp-sdk/quantum/src/main/java/org/openecomp/portalsdk/core/objectcache/jcs/JCSCacheManager.java | |
parent | ca23569858b8cc9f60010e193b7041feb2d3227b (diff) |
Initial OpenECOMP Portal SDK commit
Change-Id: I66a3491600a4b9ea241128dc29267eed6a78ed76
Signed-off-by: talasila <talasila@research.att.com>
Diffstat (limited to 'ecomp-sdk/quantum/src/main/java/org/openecomp/portalsdk/core/objectcache/jcs/JCSCacheManager.java')
-rw-r--r-- | ecomp-sdk/quantum/src/main/java/org/openecomp/portalsdk/core/objectcache/jcs/JCSCacheManager.java | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/ecomp-sdk/quantum/src/main/java/org/openecomp/portalsdk/core/objectcache/jcs/JCSCacheManager.java b/ecomp-sdk/quantum/src/main/java/org/openecomp/portalsdk/core/objectcache/jcs/JCSCacheManager.java new file mode 100644 index 00000000..39b3f0cb --- /dev/null +++ b/ecomp-sdk/quantum/src/main/java/org/openecomp/portalsdk/core/objectcache/jcs/JCSCacheManager.java @@ -0,0 +1,186 @@ +/*- + * ================================================================================ + * eCOMP Portal SDK + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property + * ================================================================================ + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ================================================================================ + */ +package org.openecomp.portalsdk.core.objectcache.jcs; + +import java.io.IOException; +import java.io.InputStream; +import java.util.Properties; +import java.util.Vector; + +import javax.annotation.PostConstruct; +import javax.servlet.ServletContext; + +import org.apache.jcs.JCS; +import org.apache.jcs.access.exception.CacheException; +import org.apache.jcs.engine.CacheConstants; +import org.apache.jcs.engine.behavior.IElementAttributes; +import org.apache.jcs.engine.control.CompositeCacheManager; +import org.openecomp.portalsdk.core.logging.logic.EELFLoggerDelegate; +import org.openecomp.portalsdk.core.objectcache.AbstractCacheManager; +import org.openecomp.portalsdk.core.service.DataAccessService; +import org.openecomp.portalsdk.core.util.SystemProperties; +import org.springframework.web.context.ServletContextAware; + +public abstract class JCSCacheManager extends AbstractCacheManager implements CacheConstants, ServletContextAware { + + public static String LOOKUP_OBJECT_CACHE_NAME = "lookUpObjectCache"; + public static String JCS_CONFIG_FILE_PATH = "cache_config_file_path"; + public static String CACHE_LOAD_ON_STARTUP = "cache_load_on_startup"; + public static String CACHE_PROPERTY_VALUE_TRUE = "true"; + public static String CACHE_CONTROL_SWITCH_ON = "1"; + public static String CACHE_CONTROL_SWITCH_OFF = "0"; + public static String CACHE_CONTROL_SWITCH = "cache_switch"; + + EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(JCSCacheManager.class); + + private static JCS lookUpCache; + private ServletContext servletContext; + + private Properties cacheConfigProperties = null; + private final Vector<String> jscManagedCacheList = new Vector<String>(); + + private DataAccessService dataAccessService; + + public JCSCacheManager() { + super(); + jscManagedCacheList.add(LOOKUP_OBJECT_CACHE_NAME); + } + + @PostConstruct + public void configure() throws IOException { + super.configure(); + + String jcsConfigFilePath = SystemProperties.getProperty(JCS_CONFIG_FILE_PATH); + // getProperty throws if the key is missing; but check anyhow. + if (jcsConfigFilePath == null || jcsConfigFilePath.length() == 0) + throw new IOException("configure: failed to get value for config property " + JCS_CONFIG_FILE_PATH); + InputStream jcsConfigInputStream = getServletContext().getResourceAsStream(jcsConfigFilePath); + if (jcsConfigInputStream == null) + throw new IOException("configure: failed to open stream for config property " + JCS_CONFIG_FILE_PATH + + " with name " + jcsConfigFilePath); + logger.debug(EELFLoggerDelegate.debugLogger, + "configure: loading cache properties from classpath resource {} ", jcsConfigFilePath); + Properties p = new Properties(); + p.load(jcsConfigInputStream); + jcsConfigInputStream.close(); + + CompositeCacheManager ccm = CompositeCacheManager.getUnconfiguredInstance(); + ccm.configure(p); + setCacheConfigProperties(p); + + try { + initializeLookUpCache(); + } catch (CacheException ce) { + throw new IOException("configure: failed to initialize lookup cache", ce); + } + + } + + private void initializeLookUpCache() throws CacheException { + lookUpCache = JCS.getInstance(LOOKUP_OBJECT_CACHE_NAME); + + JCSCacheEventHandler eventHandler = new JCSCacheEventHandler(); + IElementAttributes elementAttributes = lookUpCache.getDefaultElementAttributes(); + + elementAttributes.addElementEventHandler(eventHandler); + + lookUpCache.setDefaultElementAttributes(elementAttributes); + + if (CACHE_PROPERTY_VALUE_TRUE.equalsIgnoreCase(SystemProperties.getProperty(CACHE_LOAD_ON_STARTUP))) { + loadDataOnStartUp(); + } + } + + public Object getObject(String key) { + if (CACHE_CONTROL_SWITCH_ON.equalsIgnoreCase(SystemProperties.getProperty(CACHE_CONTROL_SWITCH))) { + if (lookUpCache == null) + return null; + else + return lookUpCache.get(key); + } else + return null; + } + + public void putObject(String key, Object objectToCache) { + try { + if (CACHE_CONTROL_SWITCH_ON.equalsIgnoreCase(SystemProperties.getProperty(CACHE_CONTROL_SWITCH))) { + if (lookUpCache != null) { + lookUpCache.put(key, objectToCache); + } + } + } catch (CacheException ce) { + logger.error(EELFLoggerDelegate.errorLogger, "putObject: failed to put the object with key " + key, ce); + } + } + + public void clearCache(String region) { + try { + if (region.equals(LOOKUP_OBJECT_CACHE_NAME)) + lookUpCache.clear(); + } catch (CacheException ce) { + logger.error(EELFLoggerDelegate.errorLogger, + "clearCache: failed to clear the cache for the region " + region, ce); + } + } + + public void clearCache() { + clearCache(LOOKUP_OBJECT_CACHE_NAME); + } + + private void loadDataOnStartUp() { + loadLookUpCache(); + } + + public abstract void loadLookUpCache(); + + public void refreshLookUpCache() { + clearCache(LOOKUP_OBJECT_CACHE_NAME); + loadLookUpCache(); + } + + public Properties getCacheConfigProperties() { + return cacheConfigProperties; + } + + public void setCacheConfigProperties(Properties cacheConfigProperties) { + this.cacheConfigProperties = cacheConfigProperties; + } + + public Vector<String> getJscManagedCacheList() { + return jscManagedCacheList; + } + + public DataAccessService getDataAccessService() { + return dataAccessService; + } + + public void setDataAccessService(DataAccessService dataAccessService) { + this.dataAccessService = dataAccessService; + } + + public ServletContext getServletContext() { + return servletContext; + } + + public void setServletContext(ServletContext servletContext) { + this.servletContext = servletContext; + } + +} |