cn.schoolwow.download.module.progress.flow.ResumeDownloadFlow Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of QuickDownload Show documentation

The newest version!

package cn.schoolwow.download.module.progress.flow;

import cn.schoolwow.download.domain.task.DownloadTask;
import cn.schoolwow.download.module.pool.domain.PoolContext;
import cn.schoolwow.download.module.pool.flow.DownloadFileFlow;
import cn.schoolwow.quickflow.domain.FlowContext;
import cn.schoolwow.quickflow.flow.BusinessFlow;

public class ResumeDownloadFlow implements BusinessFlow {
    @Override
    public void executeBusinessFlow(FlowContext flowContext) throws Exception {
        PoolContext poolContext = flowContext.checkInstanceData(PoolContext.class);
        long id = (Long) flowContext.checkData("id");

        if(!poolContext.pauseDownloadTaskMap.containsKey(id)){
            throw new IllegalArgumentException("下载任务不存在或者该任务不处于中断下载状态!id:"+id);
        }
        DownloadTask downloadTask = poolContext.pauseDownloadTaskMap.get(id);
        flowContext.getQuickFlow().startFlow("下载文件")
                .putInstanceData(downloadTask)
                .next(new DownloadFileFlow());
    }

    @Override
    public String name() {
        return "恢复下载";
    }

}