Examples with Cache com.android.volley.Cache used on opensource projects

Example 11 with Cache

use of com.android.volley.Cache in project platform_frameworks_base by android.

the class URLFetcher method getExpirationTimeMillisFromHTTPHeader.

/**
     * Parses the HTTP headers to compute the ttl.
     *
     * @param headers a map that map the header key to the header values. Can be null.
     * @return the ttl in millisecond or null if the ttl is not specified in the header.
     */
private Long getExpirationTimeMillisFromHTTPHeader(Map<String, List<String>> headers) {
    if (headers == null) {
        return null;
    }
    Map<String, String> joinedHeaders = joinHttpHeaders(headers);
    NetworkResponse response = new NetworkResponse(null, joinedHeaders);
    Cache.Entry cachePolicy = HttpHeaderParser.parseCacheHeaders(response);
    if (cachePolicy == null) {
        // Cache is disabled, set the expire time to 0.
        return DO_NOT_CACHE_RESULT;
    } else if (cachePolicy.ttl == 0) {
        // Cache policy is not specified, set the expire time to 0.
        return DO_NOT_CACHE_RESULT;
    } else {
        // cachePolicy.ttl is actually the expire timestamp in millisecond.
        return cachePolicy.ttl;
    }
}

Example 12 with Cache

use of com.android.volley.Cache in project Douya by DreaminginCodeZH.

the class BasicNetwork method performRequest.

@Override
public NetworkResponse performRequest(Request<?> request) throws VolleyError {
    long requestStart = SystemClock.elapsedRealtime();
    while (true) {
        HttpResponse httpResponse = null;
        byte[] responseContents = null;
        Map<String, String> responseHeaders = Collections.emptyMap();
        try {
            // Gather headers.
            Map<String, String> headers = new HashMap<>();
            addCacheHeaders(headers, request.getCacheEntry());
            httpResponse = mHttpStack.performRequest(request, headers);
            StatusLine statusLine = httpResponse.getStatusLine();
            int statusCode = statusLine.getStatusCode();
            responseHeaders = convertHeaders(httpResponse.getAllHeaders());
            // Handle cache validation.
            if (statusCode == HttpStatus.SC_NOT_MODIFIED) {
                Cache.Entry entry = request.getCacheEntry();
                if (entry == null) {
                    return new NetworkResponse(HttpStatus.SC_NOT_MODIFIED, null, responseHeaders, true, SystemClock.elapsedRealtime() - requestStart);
                }
                // A HTTP 304 response does not have all header fields. We
                // have to use the header fields from the cache entry plus
                // the new ones from the response.
                // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.5
                entry.responseHeaders.putAll(responseHeaders);
                return new NetworkResponse(HttpStatus.SC_NOT_MODIFIED, entry.data, entry.responseHeaders, true, SystemClock.elapsedRealtime() - requestStart);
            }
            // Some responses such as 204s do not have content.  We must check.
            if (httpResponse.getEntity() != null) {
                responseContents = entityToBytes(httpResponse.getEntity());
            } else {
                // Add 0 byte response as a way of honestly representing a
                // no-content request.
                responseContents = new byte[0];
            }
            // if the request is slow, log it.
            long requestLifetime = SystemClock.elapsedRealtime() - requestStart;
            logSlowRequests(requestLifetime, request, responseContents, statusLine);
            if (statusCode < 200 || statusCode > 299) {
                throw new IOException();
            }
            return new NetworkResponse(statusCode, responseContents, responseHeaders, false, SystemClock.elapsedRealtime() - requestStart);
        } catch (MalformedURLException e) {
            throw new RuntimeException("Bad URL " + request.getUrl(), e);
        } catch (SocketTimeoutException e) {
            attemptRetryOnException("socket-timeout", request, new TimeoutError());
        } catch (ConnectTimeoutException e) {
            attemptRetryOnException("connection-timeout", request, new TimeoutError());
        } catch (IOException e) {
            int statusCode;
            if (httpResponse != null) {
                statusCode = httpResponse.getStatusLine().getStatusCode();
            } else {
                // PATCH: Let RetryPolicy decide whether the request should be aborted.
                attemptRetryOnException("no-connection", request, new NoConnectionError(e));
                continue;
            }
            VolleyLog.e("Unexpected response code %d for %s", statusCode, request.getUrl());
            if (responseContents != null) {
                NetworkResponse networkResponse = new NetworkResponse(statusCode, responseContents, responseHeaders, false, SystemClock.elapsedRealtime() - requestStart);
                if (statusCode == HttpStatus.SC_UNAUTHORIZED || statusCode == HttpStatus.SC_FORBIDDEN) {
                    attemptRetryOnException("auth", request, new AuthFailureError(networkResponse));
                } else {
                    // PATCH: Let RetryPolicy decide whether the request should be aborted.
                    // TODO: Only throw ServerError for 5xx status codes.
                    attemptRetryOnException("server", request, new ServerError(networkResponse));
                }
            } else {
                // PATCH: Let RetryPolicy decide whether the request should be aborted.
                attemptRetryOnException("network", request, new NetworkError());
            }
        }
    }
}

Example 13 with Cache

use of com.android.volley.Cache in project TaEmCasa by Dionen.

the class CacheTestUtils method makeRandomCacheEntry.

/**
     * Makes a random cache entry.
     * @param data Data to use, or null to use random data
     * @param isExpired Whether the TTLs should be set such that this entry is expired
     * @param needsRefresh Whether the TTLs should be set such that this entry needs refresh
     */
public static Cache.Entry makeRandomCacheEntry(byte[] data, boolean isExpired, boolean needsRefresh) {
    Random random = new Random();
    Cache.Entry entry = new Cache.Entry();
    if (data != null) {
        entry.data = data;
    } else {
        entry.data = new byte[random.nextInt(1024)];
    }
    entry.etag = String.valueOf(random.nextLong());
    entry.lastModified = random.nextLong();
    entry.ttl = isExpired ? 0 : Long.MAX_VALUE;
    entry.softTtl = needsRefresh ? 0 : Long.MAX_VALUE;
    return entry;
}

Example 14 with Cache

use of com.android.volley.Cache in project android_frameworks_base by DirtyUnicorns.

the class URLFetcher method getExpirationTimeMillisFromHTTPHeader.

/**
     * Parses the HTTP headers to compute the ttl.
     *
     * @param headers a map that map the header key to the header values. Can be null.
     * @return the ttl in millisecond or null if the ttl is not specified in the header.
     */
private Long getExpirationTimeMillisFromHTTPHeader(Map<String, List<String>> headers) {
    if (headers == null) {
        return null;
    }
    Map<String, String> joinedHeaders = joinHttpHeaders(headers);
    NetworkResponse response = new NetworkResponse(null, joinedHeaders);
    Cache.Entry cachePolicy = HttpHeaderParser.parseCacheHeaders(response);
    if (cachePolicy == null) {
        // Cache is disabled, set the expire time to 0.
        return DO_NOT_CACHE_RESULT;
    } else if (cachePolicy.ttl == 0) {
        // Cache policy is not specified, set the expire time to 0.
        return DO_NOT_CACHE_RESULT;
    } else {
        // cachePolicy.ttl is actually the expire timestamp in millisecond.
        return cachePolicy.ttl;
    }
}

Example 15 with Cache

use of com.android.volley.Cache in project android_frameworks_base by ResurrectionRemix.

the class URLFetcher method getExpirationTimeMillisFromHTTPHeader.

/**
     * Parses the HTTP headers to compute the ttl.
     *
     * @param headers a map that map the header key to the header values. Can be null.
     * @return the ttl in millisecond or null if the ttl is not specified in the header.
     */
private Long getExpirationTimeMillisFromHTTPHeader(Map<String, List<String>> headers) {
    if (headers == null) {
        return null;
    }
    Map<String, String> joinedHeaders = joinHttpHeaders(headers);
    NetworkResponse response = new NetworkResponse(null, joinedHeaders);
    Cache.Entry cachePolicy = HttpHeaderParser.parseCacheHeaders(response);
    if (cachePolicy == null) {
        // Cache is disabled, set the expire time to 0.
        return DO_NOT_CACHE_RESULT;
    } else if (cachePolicy.ttl == 0) {
        // Cache policy is not specified, set the expire time to 0.
        return DO_NOT_CACHE_RESULT;
    } else {
        // cachePolicy.ttl is actually the expire timestamp in millisecond.
        return cachePolicy.ttl;
    }
}