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| 1 | +package com.ankang.report.util; |
| 2 | + |
| 3 | +import java.lang.reflect.Method; |
| 4 | +import java.util.concurrent.Callable; |
| 5 | +import java.util.concurrent.ExecutorService; |
| 6 | +import java.util.concurrent.Executors; |
| 7 | +import java.util.concurrent.Future; |
| 8 | +import java.util.concurrent.SynchronousQueue; |
| 9 | +import java.util.concurrent.ThreadPoolExecutor; |
| 10 | +import java.util.concurrent.TimeUnit; |
| 11 | + |
| 12 | +import org.apache.log4j.Logger; |
| 13 | + |
| 14 | + |
| 15 | +/** |
| 16 | + * @author ankang |
| 17 | + * @time 2016-1-10 |
| 18 | + */ |
| 19 | +public class FutrueProxy{ |
| 20 | + |
| 21 | + private static final Logger logger = Logger.getLogger(FutrueProxy.class); |
| 22 | + |
| 23 | + private ExecutorService service; |
| 24 | + |
| 25 | + public FutrueProxy(int nThreads){ |
| 26 | + |
| 27 | + if(nThreads > 0){ |
| 28 | + |
| 29 | + service = new ThreadPoolExecutor(nThreads, nThreads, 60L, TimeUnit.SECONDS, |
| 30 | + new SynchronousQueue<Runnable>()); |
| 31 | + }else{ |
| 32 | + service = Executors.newCachedThreadPool(); |
| 33 | + } |
| 34 | + } |
| 35 | + |
| 36 | + /** |
| 37 | + * |
| 38 | + * @author ankang |
| 39 | + * @time 2016-1-10 |
| 40 | + * @param targerService 目标类 |
| 41 | + * @param targerMethod 目标方法名称 注:不要有方法名称一样,参数个数一样的本类认为重复的方法。 |
| 42 | + * @param resultType 返回值类型 |
| 43 | + * @param args 参数,与实际方法参数类型,顺序一致。 |
| 44 | + * @return 返回Future 通过get()获取真实返回值,此方法为阻塞方法 |
| 45 | + */ |
| 46 | + public <T> Future<T> excute(final Object targerService, final String targerMethod, final Class<T> resultType, final Object...args) { |
| 47 | + |
| 48 | + Future<T> real = service.submit(new Callable<T>() { |
| 49 | + |
| 50 | + @Override |
| 51 | + public T call() throws Exception { |
| 52 | + |
| 53 | + try { |
| 54 | + |
| 55 | + Method method = getMethod(targerService, targerMethod, args); |
| 56 | + |
| 57 | + return (T)method.invoke(targerService, args); |
| 58 | + } catch (Exception e) { |
| 59 | + |
| 60 | + logger.error(String.format("并行调用失败 targetService:[%s], targetMethod:[%s], args:[%s]", |
| 61 | + targerService, targerMethod, args), e); |
| 62 | + throw e; |
| 63 | + } |
| 64 | + } |
| 65 | + }); |
| 66 | + |
| 67 | + return real; |
| 68 | + } |
| 69 | + |
| 70 | + public void excute(final Object targerService, final String targerMethod, final Object...args){ |
| 71 | + |
| 72 | + service.execute(new Runnable() { |
| 73 | + |
| 74 | + @Override |
| 75 | + public void run(){ |
| 76 | + try { |
| 77 | + getMethod(targerService, targerMethod, args).invoke(targerService, args); |
| 78 | + |
| 79 | + } catch (Exception e) { |
| 80 | + logger.error(String.format("并行调用失败 targetService:[%s], targetMethod:[%s], args:[%s]",targerService, |
| 81 | + targerMethod, args), e); |
| 82 | + } |
| 83 | + |
| 84 | + } |
| 85 | + }); |
| 86 | + |
| 87 | + } |
| 88 | + private Method getMethod(Object targer, String targerMethod, Object...args){ |
| 89 | + |
| 90 | + if(args == null){ |
| 91 | + args = new Object[0]; |
| 92 | + } |
| 93 | + int i = 0; |
| 94 | + Method[] methods = targer.getClass().getMethods(); |
| 95 | + for (; i < methods.length; i++) { |
| 96 | + if(targerMethod.equals(methods[i].getName()) |
| 97 | + && args.length == methods[i].getParameterTypes().length){ |
| 98 | + break; |
| 99 | + } |
| 100 | + } |
| 101 | + return methods[i]; |
| 102 | + } |
| 103 | +} |
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