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package com.logicbus.backend;

import com.alogic.metrics.Dimensions;
import com.alogic.metrics.Fragment;
import com.alogic.metrics.Fragment.Method;
import com.alogic.metrics.Measures;
import com.alogic.metrics.impl.DefaultFragment;
import com.alogic.metrics.stream.MetricsCollector;
import com.alogic.metrics.stream.MetricsHandlerFactory;
import com.anysoft.stream.Handler;
import com.anysoft.util.PropertiesConstants;
import com.logicbus.backend.message.JsonMessage;
import com.logicbus.backend.message.XMLMessage;
import com.logicbus.backend.message.YamlMessage;
import com.logicbus.models.servant.ServiceDescription;

/**
 * Servant虚基类
 * 
 * @author duanyy
 * @since 1.2.3
 * 
 * @version 1.2.5 [20140722 duanyy] 

 * - Servant的destroy方法改为close 

 * 
 * @version 1.2.8 [20140914 duanyy] 

 * - 增加指标收集体系 

 * 
 * @version 1.4.0 [20141117 duanyy] 

 * - Servant体系抛弃MessageDoc 

 * 
 * @version 1.6.4.29 [20160126 duanyy] 

 * - 清除Servant体系中处于deprecated的方法 

 * 
 * @version 1.6.6.13 [20170109 duanyy] 

 * - 采用新的指标接口 

 *
 * @version 1.6.12.27 [20190403 duanyy] 

 * - 增加对yaml的支持 

 * 
 * @version 1.6.12.29 [20190409] 

 * - 优化底层的错误代码的处理;

 */
public abstract class AbstractServant extends Servant implements MetricsCollector {

	protected String formatDefault = "json";
	
	protected static Handler metricsHandler = null;
	
	@Override
	public int actionProcess(Context ctx){
		String json = getArgument("format",formatDefault,ctx);
		if (json.equalsIgnoreCase("json")){
			return onJson(ctx);
		}
		if (json.equalsIgnoreCase("yaml")){
			return onYaml(ctx);
		}
		return onXml(ctx);
	}

	@Override
	public void actionException(Context ctx,String code,String message){
		String json = getArgument("format",formatDefault,ctx);
		if (json.equalsIgnoreCase("json")){
			ctx.asMessage(JsonMessage.class);
			return;
		}
		if (json.equalsIgnoreCase("yaml")){
			ctx.asMessage(YamlMessage.class);
			return;
		}
		ctx.asMessage(XMLMessage.class);
	}	

	@Override
	public void create(ServiceDescription sd){
		super.create(sd);
		metricsHandler = MetricsHandlerFactory.getClientInstance();
		formatDefault = PropertiesConstants.getString(sd.getProperties(),"formatDefault",formatDefault);
		onCreate(sd);
	}

	@Override
	public void close(){
		super.close();
		onDestroy();
	}

	protected abstract void onDestroy();

	protected abstract void onCreate(ServiceDescription sd);
	
	/**
	 * 以XML协议进行服务处理
	 * @param ctx 上下文
	 * @return 结果
	 * 
	 * @since 1.4.0
	 */
	protected int onXml(Context ctx){ // NOSONAR
		throw new ServantException("core.e1000","Protocol XML is not suppurted.");		
	}

	protected int onYaml(Context ctx){ // NOSONAR
		throw new ServantException("core.e1000","Protocol YAML is not suppurted.");
	}
	
	/**
	 * 以JSON协议进行服务处理
	 * @param ctx 上下文
	 * @return 结果
	 * @since 1.4.0
	 */
	protected abstract int onJson(Context ctx); // NOSONAR
	
	@Override
	public void metricsIncr(Fragment fragment){
		if (metricsHandler != null){
			Dimensions dims = fragment.getDimensions();
			if (dims != null){
				dims.set("svc", getDescription().getPath(), false);
			}
			metricsHandler.handle(fragment,System.currentTimeMillis());
		}
	}
	
	public void metricsIncr(String mId,String measure,long value,Method m){
		Fragment f = new DefaultFragment(mId);
		
		Measures meas = f.getMeasures();
		if (meas != null){
			meas.set(measure, value,m);
		}
		
		metricsIncr(f);
	}
	
	public void metricsIncr(String mId,String measure,double value,Method m){
		Fragment f = new DefaultFragment(mId);
		
		Measures meas = f.getMeasures();
		if (meas != null){
			meas.set(measure, value,m);
		}
		
		metricsIncr(f);		
	}
	
	public void metricsIncr(String mId,String measure,long value){
		metricsIncr(mId,measure,value,Method.sum);
	}
	
	public void metricsIncr(String mId,long value){
		metricsIncr(mId,"v",value,Method.sum);
	}	
	
	public void metricsIncr(String mId,String measure,double value){
		metricsIncr(mId,measure,value,Method.sum);
	}	
	
	public void metricsIncr(String mId,double value){
		metricsIncr(mId,"v",value,Method.sum);
	}		
}