Examples with ProcessLock org.xutils.common.util.ProcessLock used on opensource projects

Example 1 with ProcessLock

use of org.xutils.common.util.ProcessLock in project xUtils3 by wyouflf.

the class LruDiskCache method createDiskCacheFile.

public DiskCacheFile createDiskCacheFile(DiskCacheEntity entity) throws IOException {
    if (!available || entity == null) {
        return null;
    }
    DiskCacheFile result = null;
    entity.setPath(new File(this.cacheDir, MD5.md5(entity.getKey())).getAbsolutePath());
    String tempFilePath = entity.getPath() + TEMP_FILE_SUFFIX;
    ProcessLock processLock = ProcessLock.tryLock(tempFilePath, true);
    if (processLock != null && processLock.isValid()) {
        result = new DiskCacheFile(entity, tempFilePath, processLock);
        if (!result.getParentFile().exists()) {
            result.mkdirs();
        }
    } else {
        throw new FileLockedException(entity.getPath());
    }
    return result;
}

Example 2 with ProcessLock

use of org.xutils.common.util.ProcessLock in project xUtils3 by wyouflf.

the class LruDiskCache method getDiskCacheFile.

public DiskCacheFile getDiskCacheFile(String key) throws InterruptedException {
    if (!available || TextUtils.isEmpty(key)) {
        return null;
    }
    DiskCacheFile result = null;
    DiskCacheEntity entity = get(key);
    if (entity != null && new File(entity.getPath()).exists()) {
        ProcessLock processLock = ProcessLock.tryLock(entity.getPath(), false, LOCK_WAIT);
        if (processLock != null && processLock.isValid()) {
            result = new DiskCacheFile(entity, entity.getPath(), processLock);
            if (!result.exists()) {
                try {
                    cacheDb.delete(entity);
                } catch (DbException ex) {
                    LogUtil.e(ex.getMessage(), ex);
                }
                result = null;
            }
        }
    }
    return result;
}

Example 3 with ProcessLock

use of org.xutils.common.util.ProcessLock in project xUtils3 by wyouflf.

the class LruDiskCache method commitDiskCacheFile.

/**
     * 添加缓存文件
     *
     * @param cacheFile
     */
/*package*/
DiskCacheFile commitDiskCacheFile(DiskCacheFile cacheFile) throws IOException {
    if (cacheFile != null && cacheFile.length() < 1L) {
        IOUtil.closeQuietly(cacheFile);
        return null;
    }
    if (!available || cacheFile == null) {
        return null;
    }
    DiskCacheFile result = null;
    DiskCacheEntity cacheEntity = cacheFile.cacheEntity;
    if (cacheFile.getName().endsWith(TEMP_FILE_SUFFIX)) {
        // is temp file
        ProcessLock processLock = null;
        DiskCacheFile destFile = null;
        try {
            String destPath = cacheEntity.getPath();
            processLock = ProcessLock.tryLock(destPath, true, LOCK_WAIT);
            if (processLock != null && processLock.isValid()) {
                // lock
                destFile = new DiskCacheFile(cacheEntity, destPath, processLock);
                if (cacheFile.renameTo(destFile)) {
                    try {
                        result = destFile;
                        cacheDb.replace(cacheEntity);
                    } catch (DbException ex) {
                        LogUtil.e(ex.getMessage(), ex);
                    }
                    trimSize();
                } else {
                    throw new IOException("rename:" + cacheFile.getAbsolutePath());
                }
            } else {
                throw new FileLockedException(destPath);
            }
        } catch (InterruptedException ex) {
            result = cacheFile;
            LogUtil.e(ex.getMessage(), ex);
        } finally {
            if (result == null) {
                result = cacheFile;
                IOUtil.closeQuietly(destFile);
                IOUtil.closeQuietly(processLock);
                IOUtil.deleteFileOrDir(destFile);
            } else {
                IOUtil.closeQuietly(cacheFile);
                IOUtil.deleteFileOrDir(cacheFile);
            }
        }
    } else {
        result = cacheFile;
    }
    return result;
}

Example 4 with ProcessLock

use of org.xutils.common.util.ProcessLock in project xUtils3 by wyouflf.

the class FileLoader method load.

@Override
public File load(final UriRequest request) throws Throwable {
    ProcessLock processLock = null;
    File result = null;
    try {
        // 处理[下载逻辑1](见文件头doc)
        saveFilePath = params.getSaveFilePath();
        diskCacheFile = null;
        if (TextUtils.isEmpty(saveFilePath)) {
            if (progressHandler != null && !progressHandler.updateProgress(0, 0, false)) {
                throw new Callback.CancelledException("download stopped!");
            }
            // 保存路径为空, 存入磁盘缓存.
            initDiskCacheFile(request);
        } else {
            tempSaveFilePath = saveFilePath + ".tmp";
        }
        if (progressHandler != null && !progressHandler.updateProgress(0, 0, false)) {
            throw new Callback.CancelledException("download stopped!");
        }
        // 等待, 若不能下载则取消此次下载.
        processLock = ProcessLock.tryLock(saveFilePath + "_lock", true);
        if (processLock == null || !processLock.isValid()) {
            throw new FileLockedException("download exists: " + saveFilePath);
        }
        params = request.getParams();
        {
            // 处理[断点逻辑1](见文件头doc)
            long range = 0;
            if (isAutoResume) {
                File tempFile = new File(tempSaveFilePath);
                long fileLen = tempFile.length();
                if (fileLen <= CHECK_SIZE) {
                    IOUtil.deleteFileOrDir(tempFile);
                    range = 0;
                } else {
                    range = fileLen - CHECK_SIZE;
                }
            }
            // retry 时需要覆盖RANGE参数
            params.setHeader("RANGE", "bytes=" + range + "-");
        }
        if (progressHandler != null && !progressHandler.updateProgress(0, 0, false)) {
            throw new Callback.CancelledException("download stopped!");
        }
        // may be throw an HttpException
        request.sendRequest();
        contentLength = request.getContentLength();
        if (isAutoRename) {
            responseFileName = getResponseFileName(request);
        }
        if (isAutoResume) {
            isAutoResume = isSupportRange(request);
        }
        if (progressHandler != null && !progressHandler.updateProgress(0, 0, false)) {
            throw new Callback.CancelledException("download stopped!");
        }
        if (diskCacheFile != null) {
            DiskCacheEntity entity = diskCacheFile.getCacheEntity();
            entity.setLastAccess(System.currentTimeMillis());
            entity.setEtag(request.getETag());
            entity.setExpires(request.getExpiration());
            entity.setLastModify(new Date(request.getLastModified()));
        }
        result = this.load(request.getInputStream());
    } catch (HttpException httpException) {
        if (httpException.getCode() == 416) {
            if (diskCacheFile != null) {
                result = diskCacheFile.commit();
            } else {
                result = new File(tempSaveFilePath);
            }
            // 从缓存获取文件, 不rename和断点, 直接退出.
            if (result != null && result.exists()) {
                if (isAutoRename) {
                    responseFileName = getResponseFileName(request);
                }
                result = autoRename(result);
            } else {
                IOUtil.deleteFileOrDir(result);
                throw new IllegalStateException("cache file not found" + request.getCacheKey());
            }
        } else {
            throw httpException;
        }
    } finally {
        IOUtil.closeQuietly(processLock);
        IOUtil.closeQuietly(diskCacheFile);
    }
    return result;
}