net.sf.hajdbc.state.health.Arbiter Maven / Gradle / Ivy
package net.sf.hajdbc.state.health;
import net.sf.hajdbc.state.health.observer.Observer;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
public class Arbiter {
private final LocalTokenStore local;
private final TokenStore arbiter;
private final Observer observer = new Observer();
private final ArbiterConfig config = new ArbiterConfig();
//private final String clusterId;
private final String tokenName;
public Arbiter(String clusterId) {
//this.clusterId = clusterId;
tokenName = clusterId+".token";
local = new LocalTokenStore(tokenName);
arbiter = new TokenStore(getArbiterPath());
}
private Path getArbiterPath() {
return Paths.get(config.getArbiterPath(),tokenName);
}
public LocalTokenStore getLocalTokenStore() {
return local;
}
public TokenStore getArbiter() {
checkPathChange();
return arbiter;
}
public void setLocalIp(String local) {
config.setLocalIp(local);
}
public void setIps(List ips){
config.setIps(ips);
}
private void checkPathChange() {
Path path = getArbiterPath();
if(!arbiter.getPath().equals(path)){
arbiter.setPath(path);
}
}
public void update(long token){
local.update(token);
checkPathChange();
arbiter.update(token);
}
public boolean existsArbiter(){
checkPathChange();
return arbiter.exists();
}
/**
* Return observable or not
* @param needDown 是否是下线检测，false表示上线检测
* @return observable or not
*/
public boolean isObservable(boolean needDown){
if(observer.isObservable(needDown, config.getLocalIp(), config.getIps())){
return true;
}
return false;
}
}