Examples with EvictionPolicy org.apache.nifi.distributed.cache.server.EvictionPolicy used on opensource projects

Example 1 with EvictionPolicy

use of org.apache.nifi.distributed.cache.server.EvictionPolicy in project nifi by apache.

the class DistributedMapCacheServer method createCacheServer.

@Override
protected CacheServer createCacheServer(final ConfigurationContext context) {
    final int port = context.getProperty(PORT).asInteger();
    final String persistencePath = context.getProperty(PERSISTENCE_PATH).getValue();
    final SSLContextService sslContextService = context.getProperty(SSL_CONTEXT_SERVICE).asControllerService(SSLContextService.class);
    final int maxSize = context.getProperty(MAX_CACHE_ENTRIES).asInteger();
    final String evictionPolicyName = context.getProperty(EVICTION_POLICY).getValue();
    final SSLContext sslContext;
    if (sslContextService == null) {
        sslContext = null;
    } else {
        sslContext = sslContextService.createSSLContext(ClientAuth.REQUIRED);
    }
    final EvictionPolicy evictionPolicy;
    switch(evictionPolicyName) {
        case EVICTION_STRATEGY_FIFO:
            evictionPolicy = EvictionPolicy.FIFO;
            break;
        case EVICTION_STRATEGY_LFU:
            evictionPolicy = EvictionPolicy.LFU;
            break;
        case EVICTION_STRATEGY_LRU:
            evictionPolicy = EvictionPolicy.LRU;
            break;
        default:
            throw new IllegalArgumentException("Illegal Eviction Policy: " + evictionPolicyName);
    }
    try {
        final File persistenceDir = persistencePath == null ? null : new File(persistencePath);
        return createMapCacheServer(port, maxSize, sslContext, evictionPolicy, persistenceDir);
    } catch (final Exception e) {
        throw new RuntimeException(e);
    }
}