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| package com.executor.service;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.*;
import java.util.stream.Collectors;
@Slf4j
@Service
public class TaskManagementService {
@Autowired
@Qualifier("coreExecutor")
private Executor coreExecutor;
public List<String> executeBatchTasks(List<String> taskNames) {
log.info("开始批量执行任务，任务数量: {}", taskNames.size());
List<CompletableFuture<String>> futures = taskNames.stream()
.map(taskName -> CompletableFuture.supplyAsync(() -> {
try {
log.info("执行任务: {}", taskName);
Thread.sleep(1000);
return "任务完成: " + taskName;
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException("任务被中断: " + taskName, e);
}
}, coreExecutor))
.collect(Collectors.toList());
CompletableFuture<Void> allTasks = CompletableFuture.allOf(
futures.toArray(new CompletableFuture[0])
);
try {
allTasks.get(30, TimeUnit.SECONDS);
List<String> results = futures.stream()
.map(CompletableFuture::join)
.collect(Collectors.toList());
log.info("批量任务执行完成，成功数量: {}", results.size());
return results;
} catch (TimeoutException e) {
log.error("批量任务执行超时", e);
throw new RuntimeException("批量任务执行超时", e);
} catch (Exception e) {
log.error("批量任务执行失败", e);
throw new RuntimeException("批量任务执行失败", e);
}
}
public String executeTaskWithResult(String taskName) {
log.info("开始执行任务并获取结果: {}", taskName);
CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {
try {
log.info("执行任务: {}", taskName);
Thread.sleep(2000);
return "任务结果: " + taskName;
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException("任务被中断: " + taskName, e);
}
}, coreExecutor);
try {
String result = future.get(10, TimeUnit.SECONDS);
log.info("任务执行完成，结果: {}", result);
return result;
} catch (TimeoutException e) {
log.error("任务执行超时: {}", taskName, e);
throw new RuntimeException("任务执行超时: " + taskName, e);
} catch (Exception e) {
log.error("任务执行失败: {}", taskName, e);
throw new RuntimeException("任务执行失败: " + taskName, e);
}
}
public String executeTaskWithExceptionHandling(String taskName, boolean shouldFail) {
log.info("开始执行任务并处理异常: {}", taskName);
CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> {
try {
log.info("执行任务: {}", taskName);
Thread.sleep(1000);
if (shouldFail) {
throw new RuntimeException("模拟任务失败");
}
return "任务成功: " + taskName;
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException("任务被中断: " + taskName, e);
}
}, coreExecutor);
CompletableFuture<String> handledFuture = future.handle((result, throwable) -> {
if (throwable != null) {
log.error("任务执行异常: {}", taskName, throwable);
return "任务失败: " + taskName + ", 原因: " + throwable.getMessage();
}
return result;
});
try {
String result = handledFuture.get(10, TimeUnit.SECONDS);
log.info("任务处理完成: {}", result);
return result;
} catch (Exception e) {
log.error("任务处理失败: {}", taskName, e);
throw new RuntimeException("任务处理失败: " + taskName, e);
}
}
public String executeTaskChain(String initialTask) {
log.info("开始执行任务链: {}", initialTask);
CompletableFuture<String> future = CompletableFuture
.supplyAsync(() -> {
log.info("执行第一个任务: {}", initialTask);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException(e);
}
return "第一步完成: " + initialTask;
}, coreExecutor)
.thenApplyAsync(result -> {
log.info("执行第二个任务，基于: {}", result);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException(e);
}
return result + " -> 第二步完成";
}, coreExecutor)
.thenApplyAsync(result -> {
log.info("执行第三个任务，基于: {}", result);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException(e);
}
return result + " -> 第三步完成";
}, coreExecutor);
try {
String result = future.get(30, TimeUnit.SECONDS);
log.info("任务链执行完成: {}", result);
return result;
} catch (Exception e) {
log.error("任务链执行失败: {}", initialTask, e);
throw new RuntimeException("任务链执行失败: " + initialTask, e);
}
}
public List<String> executeParallelTasks(List<String> taskNames) {
log.info("开始执行并行任务，任务数量: {}", taskNames.size());
List<CompletableFuture<String>> futures = taskNames.stream()
.map(taskName -> CompletableFuture.supplyAsync(() -> {
try {
log.info("并行执行任务: {}", taskName);
Thread.sleep(ThreadLocalRandom.current().nextInt(1000, 3000));
return "并行任务完成: " + taskName;
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new RuntimeException("任务被中断: " + taskName, e);
}
}, coreExecutor))
.collect(Collectors.toList());
CompletableFuture<Void> allTasks = CompletableFuture.allOf(
futures.toArray(new CompletableFuture[0])
);
try {
allTasks.get(60, TimeUnit.SECONDS);
List<String> results = futures.stream()
.map(CompletableFuture::join)
.collect(Collectors.toList());
log.info("并行任务执行完成，成功数量: {}", results.size());
return results;
} catch (Exception e) {
log.error("并行任务执行失败", e);
throw new RuntimeException("并行任务执行失败", e);
}
}
}
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