// 检查缓存目录中是否已经下载过文件
private String checkFromCache(DownloadRequest request) {
if (request != null && !TextUtils.isEmpty(request.mDownloadUrl)) {
String saveUrl =
mDownloadFilenameCreateListener != null
? mDownloadFilenameCreateListener.onFilenameCreateWithDownloadUrl(
request.mDownloadUrl)
: mDefaultDownloadFilenameCreateListener.onFilenameCreateWithDownloadUrl(
request.mDownloadUrl);
if (TextUtils.isEmpty(DOWNLOADED_FILE_DIR)) {
return null;
}
File dir = new File(DOWNLOADED_FILE_DIR);
if (!dir.exists() || dir.isFile()) {
return null;
}
String extension =
TextUtils.isEmpty(request.mFileExtension) ? "" : "." + request.mFileExtension;
File cachedFile = new File(DOWNLOADED_FILE_DIR + saveUrl + extension);
if (cachedFile.exists()) {
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME(
"<<<<< [[find in cache]] >>>>> ::::::::: " + cachedFile.getAbsolutePath());
}
return cachedFile.getAbsolutePath();
}
}
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME(
"<<<<< [[can not find in cache]] >>>>> ::::::::: " + request.toString());
}
return null;
}
/**
* 将下载好的文件从缓存目录移动到下载完成的目录
*
* @param cachedFile
* @param extension
* @return
*/
private String mvFileToDownloadedDir(String cachedFile, String extension) {
CommonUtilsConfig.LOGD("----- move cached file to + " + DOWNLOADED_FILE_DIR);
File dir = new File(DOWNLOADED_FILE_DIR);
if (!dir.exists() || !dir.isDirectory()) {
dir.delete();
dir.mkdirs();
}
File file = new File(cachedFile);
String ext = TextUtils.isEmpty(extension) ? "" : "." + extension;
File newFile = new File(dir.getAbsolutePath() + "/" + file.getName() + ext);
// // 重命名成功
if (CommonUtilsRuntime.isExternalStorageAvailable() && file.renameTo(newFile)) {
CommonUtilsConfig.LOGD(
"----- move cached file to + "
+ newFile.getAbsolutePath()
+ " successfully InstallApp=======");
return newFile.getAbsolutePath();
}
// 如果重命名失败，则通过拷贝实现
InputStream is = null;
OutputStream os = null;
try {
is = new FileInputStream(file);
os = null;
if (dir.getAbsolutePath().startsWith("/data/data")) {
CommonUtilsConfig.LOGD(
"open world readable file" + " successfully InstallApp=======" + file.getName() + ext);
os = mContext.openFileOutput(file.getName() + ext, Context.MODE_WORLD_READABLE);
} else {
CommonUtilsConfig.LOGD("new FileOutputStream, InstallApp");
os = new FileOutputStream(newFile);
}
CommonUtilsConfig.LOGD(
"----- move cached file to + "
+ newFile.getAbsolutePath()
+ " successfully InstallApp=======");
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (FileUtil.copy(is, os)) {
file.delete();
return newFile.getAbsolutePath();
}
return null;
}
private DownloadRequest findRequestCanOperate(ArrayList<DownloadRequest> requestList) {
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME("<<<<< [[findRequestCanOperate]] >>>>>");
}
synchronized (requestList) {
for (DownloadRequest r : requestList) {
if (!r.requestIsOperating.get()) {
r.requestIsOperating.set(true);
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME(
"<<<<< [[findRequestCanOperate]] end findRequestCanOperate >>>>>");
}
return r;
}
}
return null;
}
}
private void waitforUrl() {
try {
synchronized (objLock) {
if (mRequestList.size() == 0 && !bIsWaiting) {
bIsWaiting = true;
if (DEBUG) {
CommonUtilsConfig.LOGD("entry into [[waitforUrl]] for " + DEFAULT_KEEPALIVE + "ms");
}
objLock.wait(mKeepAlive);
if (DEBUG) {
CommonUtilsConfig.LOGD("leave [[waitforUrl]] for " + DEFAULT_KEEPALIVE + "ms");
}
}
}
} catch (Exception e) {
e.printStackTrace();
if (DEBUG) {
CommonUtilsConfig.LOGD("Excption : ", e);
}
}
bIsWaiting = false;
}
@Override
public void run() {
while (!bIsStop) {
waitforUrl();
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME("<<<<< [[run]] >>>>>");
}
synchronized (mRequestList) {
if (mRequestList.size() == 0) {
// bIsRunning = false;
bIsStop = true;
break;
}
}
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME("<<<<< [[run]] end synchronized (mRequestList) >>>>>");
}
DownloadRequest request = null;
try {
request = findRequestCanOperate(mRequestList);
if (request == null) {
bIsStop = true;
}
if (request != null && request.mStatus != DownloadRequest.STATUS_CANCEL) {
if (DEBUG) {
CommonUtilsConfig.LOGD(
"================ <<" + Thread.currentThread().getName() + ">> working on : ");
CommonUtilsConfig.LOGD("begin operate one request : " + request.toString());
CommonUtilsConfig.LOGD("============================================");
}
String cacheFile =
InternetUtils.requestBigResourceWithCache(
mContext, request.mDownloadUrl, request.getHeaders());
if (DEBUG) {
CommonUtilsConfig.LOGD("----- after get the cache file : " + cacheFile + " =======");
}
if (!TextUtils.isEmpty(cacheFile)) {
// 将文件移动到下载完成的页面
String filePath = mvFileToDownloadedDir(cacheFile, request.mFileExtension);
if (!TextUtils.isEmpty(filePath)) {
// notify success
// 将文件移动到下载完成的页面
DownloadResponse response = tryToHandleDownloadFile(filePath, request);
if (response != null) {
mSuccessHandler.notifyAll(-1, -1, response);
handleResponseByListener(DOWNLOAD_SUCCESS, request.mDownloadUrl, response, false);
removeRequest(request);
continue;
} else {
handleResponseByListener(DOWNLOAD_FAILED, request.mDownloadUrl, request, false);
mFailedHandler.notifyAll(-1, -1, request);
continue;
}
} else {
handleResponseByListener(DOWNLOAD_FAILED, request.mDownloadUrl, request, false);
mFailedHandler.notifyAll(-1, -1, request);
continue;
}
}
if (request.getmStatus() != DownloadRequest.STATUS_CANCEL) {
handleResponseByListener(DOWNLOAD_FAILED, request.mDownloadUrl, request, false);
mFailedHandler.notifyAll(-1, -1, request);
} else {
handleResponseByListener(DOWNLOAD_FAILED, request.mDownloadUrl, request, true);
}
if (DEBUG) {
CommonUtilsConfig.LOGD("success end operate one request : " + request);
}
}
} catch (Exception e) {
e.printStackTrace();
if (DEBUG) {
CommonUtilsConfig.LOGD("Exception : ", e);
CommonUtilsConfig.LOGD("exception end operate one request : " + request);
CommonUtilsConfig.LOGD(e.getStackTrace().toString());
}
if (request.getmStatus() != DownloadRequest.STATUS_CANCEL) {
handleResponseByListener(DOWNLOAD_FAILED, request.mDownloadUrl, request, false);
mFailedHandler.notifyAll(-1, -1, request);
} else {
handleResponseByListener(DOWNLOAD_FAILED, request.mDownloadUrl, request, true);
}
}
removeRequest(request);
}
System.gc();
}
@Override
public String onInputStreamReturn(String requestUrl, InputStream is) {
// if (!UtilsRuntime.isSDCardReady()) {
// UtilsConfig.LOGD("return because unmount the sdcard");
// return null;
// }
if (DEBUG) {
CommonUtilsConfig.LOGD("");
CommonUtilsConfig.LOGD("//-------------------------------------------------");
CommonUtilsConfig.LOGD("||");
CommonUtilsConfig.LOGD("|| [[FileDownloader::onInputStreamReturn]] : ");
CommonUtilsConfig.LOGD("|| try to download [[BIG]] file with url : " + requestUrl);
CommonUtilsConfig.LOGD("||");
CommonUtilsConfig.LOGD("\\-------------------------------------------------");
CommonUtilsConfig.LOGD("");
}
if (is != null) {
String saveUrl =
mDownloadFilenameCreateListener != null
? mDownloadFilenameCreateListener.onFilenameCreateWithDownloadUrl(requestUrl)
: mDefaultDownloadFilenameCreateListener.onFilenameCreateWithDownloadUrl(requestUrl);
File bigCacheFile = new File(INPUT_STREAM_CACHE_PATH);
if (!bigCacheFile.exists() || !bigCacheFile.isDirectory()) {
bigCacheFile.delete();
bigCacheFile.mkdirs();
}
long curTime = 0;
if (DEBUG) {
CommonUtilsConfig.LOGD(
"try to download from inputstream to local path = "
+ INPUT_STREAM_CACHE_PATH
+ saveUrl
+ " for orgin URL : "
+ requestUrl);
curTime = System.currentTimeMillis();
}
// download file
int totalSize = 0;
try {
totalSize = is.available();
} catch (Exception e) {
e.printStackTrace();
}
long downloadSize = 0;
String savePath = null;
String targetPath = INPUT_STREAM_CACHE_PATH + saveUrl;
byte[] buffer = new byte[4096 * 2];
File f = new File(targetPath);
int len;
OutputStream os = null;
boolean isClosed = false;
try {
if (f.exists()) {
downloadSize = f.length();
}
os = new FileOutputStream(f, true);
while ((len = is.read(buffer)) != -1) {
os.write(buffer, 0, len);
// add listener to Notify UI
downloadSize += len;
handleProcess(requestUrl, totalSize, (int) downloadSize);
if (RUNTIME_CLOSE_SUPPORTED) {
DownloadRequest r = findCacelRequest(requestUrl);
if (r != null && r.mStatus == DownloadRequest.STATUS_CANCEL) {
CommonUtilsConfig.LOGD("try to close is >>>>>>>>>>>>>>>>>>>>");
is.close();
isClosed = true;
}
}
}
savePath = targetPath;
} catch (Exception ex) {
ex.printStackTrace();
} finally {
if (os != null) {
try {
os.close();
} catch (Exception e) {
e.printStackTrace();
}
}
buffer = null;
}
// end download
try {
if (!isClosed) {
is.close();
}
} catch (Exception e) {
e.printStackTrace();
}
if (!isClosed && !TextUtils.isEmpty(savePath) && checkInputStreamDownloadFile(savePath)) {
if (DEBUG) {
long successTime = System.currentTimeMillis();
CommonUtilsConfig.LOGD(
"[[onInputStreamReturn]] save Request url : "
+ saveUrl
+ " success ||||||| and the saved file size : "
+ FileUtil.convertStorage(new File(savePath).length())
+ ", save cost time = "
+ (successTime - curTime)
+ "ms");
}
return savePath;
} else {
// 遗留文件，用于下次的断点下载
if (DEBUG) {
CommonUtilsConfig.LOGD(
"===== failed to downlaod requestUrl : "
+ requestUrl
+ " beacuse the debug 断点 =====");
}
return null;
}
} else {
if (DEBUG) {
CommonUtilsConfig.LOGD(
"===== failed to downlaod requestUrl : "
+ requestUrl
+ " beacuse requestUrl is NULL =====");
}
}
return null;
}
/**
* 新提交的request会默认
*
* @param request
* @return
*/
public boolean postRequest(DownloadRequest request) {
if (mRequestList == null || request == null || TextUtils.isEmpty(request.mDownloadUrl)) {
return false;
}
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME(
"<<<<< [[postRequest]] >>>>> ::::::::: " + request.toString());
}
// 检查是否已经下载过此request对应的文件
String cachedFile = checkFromCache(request);
if (!TextUtils.isEmpty(cachedFile)) {
File file = new File(cachedFile);
if (file.exists()) {
DownloadResponse response = tryToHandleDownloadFile(cachedFile, request);
if (response != null) {
mSuccessHandler.notifyAll(-1, -1, response);
handleProcess(request.mDownloadUrl, (int) file.length(), (int) file.length());
}
return true;
}
}
synchronized (mRequestList) {
boolean contain = false;
for (DownloadRequest r : mRequestList) {
if (r.mUrlHashCode == request.mUrlHashCode) {
contain = true;
break;
}
}
if (!contain) {
// mRequestList.add(request);
// 将最新添加的任务放在下载队列的最前面
if (mLastInFirstDownload) {
mRequestList.add(0, request);
} else {
mRequestList.add(request);
}
if (DEBUG) {
CommonUtilsConfig.LOGD(
"postRequest, add request : " + request.toString() + " into download list");
}
}
bIsStop = false;
ThreadPoolSnapShot tss =
CustomThreadPool.getInstance()
.getSpecialThreadSnapShot(FileDownloader.class.getSimpleName());
if (tss == null) {
return false;
} else {
if (tss.taskCount < tss.ALLOWED_MAX_TAKS) {
if (DEBUG) {
CommonUtilsConfig.LOGD("entry into [[postRequest]] to start process ");
}
processWorks();
}
}
}
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME(
"<<<<< [[postRequest]] end synchronized (mRequestList) >>>>>");
}
synchronized (objLock) {
if (bIsWaiting) {
bIsWaiting = false;
if (DEBUG) {
CommonUtilsConfig.LOGD("try to notify download process begin");
}
objLock.notify();
}
}
if (DEBUG) {
CommonUtilsConfig.LOGD_WITH_TIME("<<<<< [[postRequest]] end synchronized (objLock) >>>>>");
}
return true;
}
