com.disney.groovity.conf.AbstractConfigurator Maven / Gradle / Ivy
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package com.disney.groovity.conf;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.function.BiConsumer;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.disney.groovity.GroovityConstants;
/**
* Abstract base class for configurators; this holds all configuration data in memory, and refreshes configuration values from subclasses every
* 10 seconds to allow runtime configuration changes to flow through.
*
* @author Alex Vigdor
*/
public abstract class AbstractConfigurator implements Configurator, GroovityConstants {
private static final Logger log = Logger.getLogger(Configurator.class.getName());
private ScheduledExecutorService configLoader ;
private ConcurrentHashMap loadedConfiguration;
private List loadedKeys;
private boolean initialized = false;
public void configure(String sourcePath, Set propertyNames, BiConsumer propertySetter){
if(sourcePath.endsWith(GROOVITY_SOURCE_EXTENSION)){
sourcePath = sourcePath.substring(0, sourcePath.length()-5);
}
if(sourcePath.startsWith("/")){
sourcePath = sourcePath.substring(1);
}
String[] sourceElems = sourcePath.split("/");
if(loadedKeys!=null){
for(String propertyName : propertyNames){
loadedKeysLoop:
for(ConfigurationKey key: loadedKeys){
String[] kp = key.getPath();
if(kp.length<=sourceElems.length){
if(key.getProperty().equals(propertyName)){
for(int i=0;i newConf = loadConfiguration();
List newKeys = new ArrayList(newConf.keySet());
Collections.sort(newKeys, new Comparator() {
public int compare(ConfigurationKey o1, ConfigurationKey o2) {
return o2.getPath().length-o1.getPath().length;
}
});
loadedConfiguration = new ConcurrentHashMap(newConf);
loadedKeys = newKeys;
}
catch(Exception e){
log.log(Level.SEVERE, "Error setting up configurator", e);
}
}
protected abstract Map loadConfiguration() throws Exception;
}