Example usage for org.apache.commons.jcs.engine.control CompositeCacheManager getUnconfiguredInstance

Introduction

In this page you can find the example usage for org.apache.commons.jcs.engine.control CompositeCacheManager getUnconfiguredInstance.

Prototype

public static synchronized CompositeCacheManager getUnconfiguredInstance() 

Source Link

Document

Get a CacheHub instance which is not configured.

Usage

From source file:org.ebayopensource.scc.cache.JCSCache.java

public void init(AppConfiguration appConfig, Properties cacheProps, ScheduledExecutorService scheduledService) {
    m_appConfig = appConfig;//from w  w  w  . ja v  a  2  s .co  m
    synchronized (JCSCache.class) {
        s_ccm = CompositeCacheManager.getUnconfiguredInstance();
        s_ccm.configure(cacheProps);
        s_cache = s_ccm.getCache("default");
        s_idc = getIndexDiskCache(s_cache);
        s_cacheAccess = new CacheAccess<>(s_cache);
    }
    m_scheduledService = scheduledService;
    launchSaveCacheThread();
    m_isInitialized = true;
}

---

From source file:org.openstreetmap.josm.data.cache.JCSCacheManager.java

@SuppressWarnings("resource")
private static void initialize() throws IOException {
    File cacheDir = new File(Main.pref.getCacheDirectory(), "jcs");

    if (!cacheDir.exists() && !cacheDir.mkdirs())
        throw new IOException("Cannot access cache directory");

    File cacheDirLockPath = new File(cacheDir, ".lock");
    if (!cacheDirLockPath.exists() && !cacheDirLockPath.createNewFile()) {
        LOG.log(Level.WARNING, "Cannot create cache dir lock file");
    }/* w  w  w. j a  va  2s  .  c o m*/
    cacheDirLock = new FileOutputStream(cacheDirLockPath).getChannel().tryLock();

    if (cacheDirLock == null)
        LOG.log(Level.WARNING, "Cannot lock cache directory. Will not use disk cache");

    // raising logging level gives ~500x performance gain
    // http://westsworld.dk/blog/2008/01/jcs-and-performance/
    final Logger jcsLog = Logger.getLogger("org.apache.commons.jcs");
    jcsLog.setLevel(Level.INFO);
    jcsLog.setUseParentHandlers(false);
    // we need a separate handler from Main's, as we downgrade LEVEL.INFO to DEBUG level
    Arrays.stream(jcsLog.getHandlers()).forEach(jcsLog::removeHandler);
    jcsLog.addHandler(new Handler() {
        final SimpleFormatter formatter = new SimpleFormatter();

        @Override
        public void publish(LogRecord record) {
            String msg = formatter.formatMessage(record);
            if (record.getLevel().intValue() >= Level.SEVERE.intValue()) {
                Logging.error(msg);
            } else if (record.getLevel().intValue() >= Level.WARNING.intValue()) {
                Logging.warn(msg);
                // downgrade INFO level to debug, as JCS is too verbose at INFO level
            } else if (record.getLevel().intValue() >= Level.INFO.intValue()) {
                Logging.debug(msg);
            } else {
                Logging.trace(msg);
            }
        }

        @Override
        public void flush() {
            // nothing to be done on flush
        }

        @Override
        public void close() {
            // nothing to be done on close
        }
    });

    // this could be moved to external file
    Properties props = new Properties();
    // these are default common to all cache regions
    // use of auxiliary cache and sizing of the caches is done with giving proper geCache(...) params
    // CHECKSTYLE.OFF: SingleSpaceSeparator
    props.setProperty("jcs.default.cacheattributes", CompositeCacheAttributes.class.getCanonicalName());
    props.setProperty("jcs.default.cacheattributes.MaxObjects", DEFAULT_MAX_OBJECTS_IN_MEMORY.get().toString());
    props.setProperty("jcs.default.cacheattributes.UseMemoryShrinker", "true");
    props.setProperty("jcs.default.cacheattributes.DiskUsagePatternName", "UPDATE"); // store elements on disk on put
    props.setProperty("jcs.default.elementattributes", CacheEntryAttributes.class.getCanonicalName());
    props.setProperty("jcs.default.elementattributes.IsEternal", "false");
    props.setProperty("jcs.default.elementattributes.MaxLife", Long.toString(maxObjectTTL));
    props.setProperty("jcs.default.elementattributes.IdleTime", Long.toString(maxObjectTTL));
    props.setProperty("jcs.default.elementattributes.IsSpool", "true");
    // CHECKSTYLE.ON: SingleSpaceSeparator
    CompositeCacheManager cm = CompositeCacheManager.getUnconfiguredInstance();
    cm.configure(props);
    cacheManager = cm;
}

---