Examples with BasicHttpClient com.turbomanage.httpclient.BasicHttpClient used on opensource projects

Example 1 with BasicHttpClient

use of com.turbomanage.httpclient.BasicHttpClient in project iosched by google.

the class RemoteConferenceDataFetcher method fetchConferenceDataIfNewer.

/**
     * Fetches data from the remote server.
     *
     * @param refTimestamp The timestamp of the data to use as a reference; if the remote data is
     *                     not newer than this timestamp, no data will be downloaded and this method
     *                     will return null.
     * @return The data downloaded, or null if there is no data to download
     * @throws IOException if an error occurred during download.
     */
public String[] fetchConferenceDataIfNewer(String refTimestamp) throws IOException {
    if (TextUtils.isEmpty(mManifestUrl)) {
        LOGW(TAG, "Manifest URL is empty (remote sync disabled!).");
        return null;
    }
    BasicHttpClient httpClient = new BasicHttpClient();
    httpClient.setRequestLogger(mQuietLogger);
    IOUtils.authorizeHttpClient(mContext, httpClient);
    // warning in the log, because it might mean unnecessary data is being downloaded.
    if (!TextUtils.isEmpty(refTimestamp)) {
        if (TimeUtils.isValidFormatForIfModifiedSinceHeader(refTimestamp)) {
            httpClient.addHeader("If-Modified-Since", refTimestamp);
        } else {
            LOGW(TAG, "Could not set If-Modified-Since HTTP header. Potentially downloading " + "unnecessary data. Invalid format of refTimestamp argument: " + refTimestamp);
        }
    }
    HttpResponse response = httpClient.get(mManifestUrl, null);
    if (response == null) {
        LOGE(TAG, "Request for manifest returned null response.");
        throw new IOException("Request for data manifest returned null response.");
    }
    int status = response.getStatus();
    if (status == HttpURLConnection.HTTP_OK) {
        LOGD(TAG, "Server returned HTTP_OK, so new data is available.");
        mServerTimestamp = getLastModified(response);
        LOGD(TAG, "Server timestamp for new data is: " + mServerTimestamp);
        String body = response.getBodyAsString();
        if (TextUtils.isEmpty(body)) {
            LOGE(TAG, "Request for manifest returned empty data.");
            throw new IOException("Error fetching conference data manifest: no data.");
        }
        LOGD(TAG, "Manifest " + mManifestUrl + " read, contents: " + body);
        mBytesDownloaded += body.getBytes().length;
        return processManifest(body);
    } else if (status == HttpURLConnection.HTTP_NOT_MODIFIED) {
        // data on the server is not newer than our data
        LOGD(TAG, "HTTP_NOT_MODIFIED: data has not changed since " + refTimestamp);
        return null;
    } else {
        LOGE(TAG, "Error fetching conference data: HTTP status " + status + " and manifest " + mManifestUrl);
        throw new IOException("Error fetching conference data: HTTP status " + status);
    }
}

Example 2 with BasicHttpClient

use of com.turbomanage.httpclient.BasicHttpClient in project iosched by google.

the class ConferenceDataHandler method processMapOverlayFiles.

/**
     * Synchronise the map overlay files either from the local assets (if available) or from a remote url.
     *
     * @param collection Set of tiles containing a local filename and remote url.
     * @throws IOException
     */
private void processMapOverlayFiles(Collection<Tile> collection, boolean downloadAllowed) throws IOException, SVGParseException {
    // clear the tile cache on disk if any tiles have been updated
    boolean shouldClearCache = false;
    // keep track of used files, unused files are removed
    ArrayList<String> usedTiles = new ArrayList<>();
    for (Tile tile : collection) {
        final String filename = tile.filename;
        final String url = tile.url;
        usedTiles.add(filename);
        if (!MapUtils.hasTile(mContext, filename)) {
            shouldClearCache = true;
            // copy or download the tile if it is not stored yet
            if (MapUtils.hasTileAsset(mContext, filename)) {
                // file already exists as an asset, copy it
                MapUtils.copyTileAsset(mContext, filename);
            } else if (downloadAllowed && !TextUtils.isEmpty(url)) {
                try {
                    // download the file only if downloads are allowed and url is not empty
                    File tileFile = MapUtils.getTileFile(mContext, filename);
                    BasicHttpClient httpClient = new BasicHttpClient();
                    httpClient.setRequestLogger(mQuietLogger);
                    IOUtils.authorizeHttpClient(mContext, httpClient);
                    HttpResponse httpResponse = httpClient.get(url, null);
                    IOUtils.writeToFile(httpResponse.getBody(), tileFile);
                    // ensure the file is valid SVG
                    InputStream is = new FileInputStream(tileFile);
                    SVG svg = new SVGBuilder().readFromInputStream(is).build();
                    is.close();
                } catch (IOException ex) {
                    LOGE(TAG, "FAILED downloading map overlay tile " + url + ": " + ex.getMessage(), ex);
                } catch (SVGParseException ex) {
                    LOGE(TAG, "FAILED parsing map overlay tile " + url + ": " + ex.getMessage(), ex);
                }
            } else {
                LOGD(TAG, "Skipping download of map overlay tile" + " (since downloadsAllowed=false)");
            }
        }
    }
    if (shouldClearCache) {
        MapUtils.clearDiskCache(mContext);
    }
    MapUtils.removeUnusedTiles(mContext, usedTiles);
}

Example 3 with BasicHttpClient

use of com.turbomanage.httpclient.BasicHttpClient in project iosched by google.

the class RemoteConferenceDataFetcher method fetchFile.

/**
     * Fetches a file from the cache/network, from an absolute or relative URL. If the file is
     * available in our cache, we read it from there; if not, we will download it from the network
     * and cache it.
     *
     * @param url The URL to fetch the file from. The URL may be absolute or relative; if relative,
     *            it will be considered to be relative to the manifest URL.
     * @return The contents of the file.
     * @throws IOException If an error occurs.
     */
private String fetchFile(String url) throws IOException {
    // If this is a relative url, consider it relative to the manifest URL
    if (!url.contains("://")) {
        if (TextUtils.isEmpty(mManifestUrl) || !mManifestUrl.contains("/")) {
            LOGE(TAG, "Could not build relative URL based on manifest URL.");
            return null;
        }
        int i = mManifestUrl.lastIndexOf('/');
        url = mManifestUrl.substring(0, i) + "/" + url;
    }
    LOGD(TAG, "Attempting to fetch: " + sanitizeUrl(url));
    // Check if we have it in our cache first
    String body;
    try {
        body = loadFromCache(url);
        if (!TextUtils.isEmpty(body)) {
            // cache hit
            mBytesReadFromCache += body.getBytes().length;
            mCacheFilesToKeep.add(getCacheKey(url));
            return body;
        }
    } catch (IOException ex) {
        ex.printStackTrace();
        LOGE(TAG, "IOException getting file from cache.");
    // proceed anyway to attempt to download it from the network
    }
    BasicHttpClient client = new BasicHttpClient();
    IOUtils.authorizeHttpClient(mContext, client);
    client.setRequestLogger(mQuietLogger);
    // We don't have the file on cache, so download it
    LOGD(TAG, "Cache miss. Downloading from network: " + sanitizeUrl(url));
    HttpResponse response = client.get(url, null);
    if (response == null) {
        throw new IOException("Request for URL " + sanitizeUrl(url) + " returned null response.");
    }
    LOGD(TAG, "HTTP response " + response.getStatus());
    if (response.getStatus() == HttpURLConnection.HTTP_OK) {
        body = response.getBodyAsString();
        if (TextUtils.isEmpty(body)) {
            throw new IOException("Got empty response when attempting to fetch " + sanitizeUrl(url) + url);
        }
        LOGD(TAG, "Successfully downloaded from network: " + sanitizeUrl(url));
        mBytesDownloaded += body.getBytes().length;
        writeToCache(url, body);
        mCacheFilesToKeep.add(getCacheKey(url));
        return body;
    } else {
        LOGE(TAG, "Failed to fetch from network: " + sanitizeUrl(url));
        throw new IOException("Request for URL " + sanitizeUrl(url) + " failed with HTTP error " + response.getStatus());
    }
}