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author | Anonymous <no-reply@google.com> | 2021-07-07 14:01:06 -0700 |
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committer | Jeff Davidson <jpd@google.com> | 2021-07-07 23:09:19 +0000 |
commit | 212e7004acfdce76c900fd97070e2e5e8476be20 (patch) | |
tree | cf5d56ccdb862fd9676c855f919408ef940bc019 /src/main/java/com/android/volley/CacheDispatcher.java | |
parent | b47af415ba74754b442c1f9f3960b29537d07e6e (diff) | |
download | volley-212e7004acfdce76c900fd97070e2e5e8476be20.tar.gz |
Import of Volley from GitHub to AOSP.android-s-beta-5android-s-beta-4android-s-beta-3android-s-beta-5android-s-beta-4
Android.bp has been updated to account for the new source directory structure.
- 0dc50bcfd021c204a9e6c9e7e6befbdfa1027247 Refactor Volley into a multi-module project. (#418) by Jeff Davidson <jpd@google.com>
- 763c86b0bc9f66a8bb499f6a8b7fd3bdc87621a8 Remove new constructors from JsonRequests which are break... by Jeff Davidson <jpd@google.com>
- 8d1b1a59e7cd1b1d3c6d8686f8831cea08f80d1f Add @NonNull annotations to Volley (#413) by Kamal Faraj <kfaraj.dev@gmail.com>
- 5ba41f8670413973f587e435598f9f1724fa26e9 Allow sending any JSON with JsonArrayRequest & JsonObject... by Paul Smith <paulsmithkc@gmail.com>
- 784cdd755392a6080e5eb0bf94bd7bf4ea31cf17 Update SNAPSHOT version after 1.2.0 release by Jeff Davidson <jpd@google.com>
- 0d6497bab417a5f78b3c8e03ea157ada0fbfbc5d Add developers stanza to Volley POM. (#400) by Jeff Davidson <jpd@google.com>
- 36274bf515a699ae5a7fe3d321206d1b803226d8 API cleanup for Async Volley stack ahead of 1.2.0 release... by Jeff Davidson <jpd@google.com>
- 03f0144843fcf9ebafe512647c1c588975429452 Update environment variable name for snapshot pushes. (#3... by Jeff Davidson <jpd@google.com>
- 3bd1975652687d2baa1b11a7f02b135edede8523 Publish SNAPSHOT builds to OSSRH instead of OJO. (#397) by Jeff Davidson <jpd@google.com>
- 0e0c3d9cfa694f8f1400a9e9abc4bc11761fdb52 Invoke RetryPolicy#retry in the blocking executor. (#393) by Jeff Davidson <jpd@google.com>
- b51831a48f06ad28f627c3624e5edb41598a2bf8 Use a consistent timebase when evaluating soft/hard TTLs.... by Jeff Davidson <jpd@google.com>
- cd0839113b100f163df1ebd04ce6d5b9e36e9863 Migrate from Travis CI to GitHub Actions. (#381) by Jeff Davidson <jpd@google.com>
- bdc0e393199ebf9e67c4e29e665252818eed4639 Clean up cache initialization in AsyncRequestQueue. (#380) by Jeff Davidson <jpd@google.com>
- 1c0ade36edde15d02844b40351ab6f80c63b71b3 Actually allow applications to provide custom executors. by Jeff Davidson <jpd@google.com>
GitOrigin-RevId: 0dc50bcfd021c204a9e6c9e7e6befbdfa1027247
Change-Id: I4b8e4098ad5c349cb83efc867273fac1d3582a34
Diffstat (limited to 'src/main/java/com/android/volley/CacheDispatcher.java')
-rw-r--r-- | src/main/java/com/android/volley/CacheDispatcher.java | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/src/main/java/com/android/volley/CacheDispatcher.java b/src/main/java/com/android/volley/CacheDispatcher.java deleted file mode 100644 index 1bfc0ea..0000000 --- a/src/main/java/com/android/volley/CacheDispatcher.java +++ /dev/null @@ -1,206 +0,0 @@ -/* - * Copyright (C) 2011 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -package com.android.volley; - -import android.os.Process; -import androidx.annotation.VisibleForTesting; -import java.util.concurrent.BlockingQueue; - -/** - * Provides a thread for performing cache triage on a queue of requests. - * - * <p>Requests added to the specified cache queue are resolved from cache. Any deliverable response - * is posted back to the caller via a {@link ResponseDelivery}. Cache misses and responses that - * require refresh are enqueued on the specified network queue for processing by a {@link - * NetworkDispatcher}. - */ -public class CacheDispatcher extends Thread { - - private static final boolean DEBUG = VolleyLog.DEBUG; - - /** The queue of requests coming in for triage. */ - private final BlockingQueue<Request<?>> mCacheQueue; - - /** The queue of requests going out to the network. */ - private final BlockingQueue<Request<?>> mNetworkQueue; - - /** The cache to read from. */ - private final Cache mCache; - - /** For posting responses. */ - private final ResponseDelivery mDelivery; - - /** Used for telling us to die. */ - private volatile boolean mQuit = false; - - /** Manage list of waiting requests and de-duplicate requests with same cache key. */ - private final WaitingRequestManager mWaitingRequestManager; - - /** - * Creates a new cache triage dispatcher thread. You must call {@link #start()} in order to - * begin processing. - * - * @param cacheQueue Queue of incoming requests for triage - * @param networkQueue Queue to post requests that require network to - * @param cache Cache interface to use for resolution - * @param delivery Delivery interface to use for posting responses - */ - public CacheDispatcher( - BlockingQueue<Request<?>> cacheQueue, - BlockingQueue<Request<?>> networkQueue, - Cache cache, - ResponseDelivery delivery) { - mCacheQueue = cacheQueue; - mNetworkQueue = networkQueue; - mCache = cache; - mDelivery = delivery; - mWaitingRequestManager = new WaitingRequestManager(this, networkQueue, delivery); - } - - /** - * Forces this dispatcher to quit immediately. If any requests are still in the queue, they are - * not guaranteed to be processed. - */ - public void quit() { - mQuit = true; - interrupt(); - } - - @Override - public void run() { - if (DEBUG) VolleyLog.v("start new dispatcher"); - Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); - - // Make a blocking call to initialize the cache. - mCache.initialize(); - - while (true) { - try { - processRequest(); - } catch (InterruptedException e) { - // We may have been interrupted because it was time to quit. - if (mQuit) { - Thread.currentThread().interrupt(); - return; - } - VolleyLog.e( - "Ignoring spurious interrupt of CacheDispatcher thread; " - + "use quit() to terminate it"); - } - } - } - - // Extracted to its own method to ensure locals have a constrained liveness scope by the GC. - // This is needed to avoid keeping previous request references alive for an indeterminate amount - // of time. Update consumer-proguard-rules.pro when modifying this. See also - // https://github.com/google/volley/issues/114 - private void processRequest() throws InterruptedException { - // Get a request from the cache triage queue, blocking until - // at least one is available. - final Request<?> request = mCacheQueue.take(); - processRequest(request); - } - - @VisibleForTesting - void processRequest(final Request<?> request) throws InterruptedException { - request.addMarker("cache-queue-take"); - request.sendEvent(RequestQueue.RequestEvent.REQUEST_CACHE_LOOKUP_STARTED); - - try { - // If the request has been canceled, don't bother dispatching it. - if (request.isCanceled()) { - request.finish("cache-discard-canceled"); - return; - } - - // Attempt to retrieve this item from cache. - Cache.Entry entry = mCache.get(request.getCacheKey()); - if (entry == null) { - request.addMarker("cache-miss"); - // Cache miss; send off to the network dispatcher. - if (!mWaitingRequestManager.maybeAddToWaitingRequests(request)) { - mNetworkQueue.put(request); - } - return; - } - - // If it is completely expired, just send it to the network. - if (entry.isExpired()) { - request.addMarker("cache-hit-expired"); - request.setCacheEntry(entry); - if (!mWaitingRequestManager.maybeAddToWaitingRequests(request)) { - mNetworkQueue.put(request); - } - return; - } - - // We have a cache hit; parse its data for delivery back to the request. - request.addMarker("cache-hit"); - Response<?> response = - request.parseNetworkResponse( - new NetworkResponse(entry.data, entry.responseHeaders)); - request.addMarker("cache-hit-parsed"); - - if (!response.isSuccess()) { - request.addMarker("cache-parsing-failed"); - mCache.invalidate(request.getCacheKey(), true); - request.setCacheEntry(null); - if (!mWaitingRequestManager.maybeAddToWaitingRequests(request)) { - mNetworkQueue.put(request); - } - return; - } - if (!entry.refreshNeeded()) { - // Completely unexpired cache hit. Just deliver the response. - mDelivery.postResponse(request, response); - } else { - // Soft-expired cache hit. We can deliver the cached response, - // but we need to also send the request to the network for - // refreshing. - request.addMarker("cache-hit-refresh-needed"); - request.setCacheEntry(entry); - // Mark the response as intermediate. - response.intermediate = true; - - if (!mWaitingRequestManager.maybeAddToWaitingRequests(request)) { - // Post the intermediate response back to the user and have - // the delivery then forward the request along to the network. - mDelivery.postResponse( - request, - response, - new Runnable() { - @Override - public void run() { - try { - mNetworkQueue.put(request); - } catch (InterruptedException e) { - // Restore the interrupted status - Thread.currentThread().interrupt(); - } - } - }); - } else { - // request has been added to list of waiting requests - // to receive the network response from the first request once it returns. - mDelivery.postResponse(request, response); - } - } - } finally { - request.sendEvent(RequestQueue.RequestEvent.REQUEST_CACHE_LOOKUP_FINISHED); - } - } -} |