node-multi-resume-retry-downloader

a new method download http data in multiple, resume, retry.

download-task-list

[{downloadTask},{downloadTask},{downloadTask}]

How to Install

shell

1
2npm i --save node-multi-resume-retry-timeout-download
3npm i -d
4

js

1const DownloadTask = require('node-mutil-downloader').DownloadTask;
2const DownloadTaskList = require('node-mutil-downloader').DownloadTaskList;
3

OR SEE test

How To Use

1
2
3
4const downloadTaskList  = new DownloadTaskList();
5downloadTask = new DownloadTask({
6    downloadUrl,
7    savePath
8});
9downloadTaskList.register(downloadTask);
10downloadTaskList.startDownloadTask(downloadTask, index, progressCatch(dispatch, getState), downloadResultHandler(dispatch, getState));
11
12

Use In Redux

1
2reducers
3
4function downloadTaskList(state = {
5  list: new DownloadTaskList(),
6  trigger: 'init'
7}, action = {}) {
8  switch (action.type) {
9    case types.UPDATE_LIST:
10      return {
11        list: action.list,
12        time: action.time
13      };
14    case types.CLEAR_LIST:
15      return {
16        list: action.list,
17        time: action.time
18      };
19    case types.REMOVE_DOWNLOAD:
20      return {
21        list: action.list,
22        time: action.time
23      };
24    case types.DOWNLOAD_PROGRESS:
25      return {
26        trigger: action.trigger,// progress || finish
27        list: action.list,
28        time: action.time
29      };
30    default:
31      return state
32  }
33}
34
35
36handlers:
37
38function progressCatch(dispatch) {
39  const getState = [].slice.call(arguments, 1)[0];
40  return function () {
41    const downloadTaskList = getState().downloadTaskList.list;
42    return dispatch(downloadProgressUpdate(downloadTaskList, "progress"));
43  }
44}
45
46
47function processMapFileAction(file,directory) {
48  return async (dispatch, getState) => {
49    const mapInfo = await mapUtils.analysisMapTarGz(file,directory);
50    mapInfo.time = new Date().valueOf();
51    await mapUtils.saveMapMetaToDB(mapInfo);
52    return dispatch(choseMap(mapInfo));
53  }
54}
55
56
57caller:
58
59    const downloadTaskList = getState().downloadTaskList.list;
60    const downloadTask = new DownloadTask({
61      type,
62      downloadUrl,
63      savePath,
64      saveName
65    });
66    downloadTaskList.register(downloadTask);
67    downloadTask.start(progressCatch(dispatch, getState), downloadResultHandler(dispatch, getState));
68  
69  
70