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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.proxy;
import com.yahoo.log.LogLevel;
import com.yahoo.vespa.config.*;
import com.yahoo.vespa.config.protocol.JRTServerConfigRequest;
import java.util.Collections;
import java.util.List;
import java.util.logging.Logger;
/**
* @author hmusum
* @since 5.1.10
*/
class MemoryCacheConfigClient implements ConfigSourceClient {
private final static Logger log = Logger.getLogger(MemoryCacheConfigClient.class.getName());
private final MemoryCache cache;
MemoryCacheConfigClient(MemoryCache cache) {
this.cache = cache;
}
/**
* Retrieves the requested config from the cache. Used when in 'memorycache' mode.
*
* @param request The config to retrieve - can be empty (no payload), or have a valid payload.
* @return A Config with a payload.
*/
@Override
public RawConfig getConfig(RawConfig input, JRTServerConfigRequest request) {
log.log(LogLevel.DEBUG, "Getting config from cache");
ConfigKey<?> key = input.getKey();
RawConfig cached = cache.get(new ConfigCacheKey(key, input.getDefMd5()));
if (cached != null) {
log.log(LogLevel.DEBUG, "Found config " + key + " in cache");
return cached;
} else {
return null;
}
}
@Override
public void cancel() {
}
@Override
public void shutdownSourceConnections() {
}
@Override
public String getActiveSourceConnection() {
return "N/A";
}
@Override
public List<String> getSourceConnections() {
return Collections.singletonList("N/A");
}
}
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