1 files changed, 149 insertions, 0 deletions
diff --git a/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/CachingHttpClientBuilder.java b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/CachingHttpClientBuilder.java
new file mode 100644
index 000000000..385324f32
--- /dev/null
+++ b/mobile/android/thirdparty/ch/boye/httpclientandroidlib/impl/client/cache/CachingHttpClientBuilder.java
@@ -0,0 +1,149 @@
+/*
+ * ====================================================================
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ */
+package ch.boye.httpclientandroidlib.impl.client.cache;
+
+import java.io.File;
+
+import ch.boye.httpclientandroidlib.client.cache.HttpCacheInvalidator;
+import ch.boye.httpclientandroidlib.client.cache.HttpCacheStorage;
+import ch.boye.httpclientandroidlib.client.cache.ResourceFactory;
+import ch.boye.httpclientandroidlib.impl.client.HttpClientBuilder;
+import ch.boye.httpclientandroidlib.impl.execchain.ClientExecChain;
+
+/**
+ * Builder for {@link ch.boye.httpclientandroidlib.impl.client.CloseableHttpClient}
+ * instances capable of client-side caching.
+ *
+ * @since 4.3
+ */
+public class CachingHttpClientBuilder extends HttpClientBuilder {
+
+    private ResourceFactory resourceFactory;
+    private HttpCacheStorage storage;
+    private File cacheDir;
+    private CacheConfig cacheConfig;
+    private SchedulingStrategy schedulingStrategy;
+    private HttpCacheInvalidator httpCacheInvalidator;
+
+    public static CachingHttpClientBuilder create() {
+        return new CachingHttpClientBuilder();
+    }
+
+    protected CachingHttpClientBuilder() {
+        super();
+    }
+
+    public final CachingHttpClientBuilder setResourceFactory(
+            final ResourceFactory resourceFactory) {
+        this.resourceFactory = resourceFactory;
+        return this;
+    }
+
+    public final CachingHttpClientBuilder setHttpCacheStorage(
+            final HttpCacheStorage storage) {
+        this.storage = storage;
+        return this;
+    }
+
+    public final CachingHttpClientBuilder setCacheDir(
+            final File cacheDir) {
+        this.cacheDir = cacheDir;
+        return this;
+    }
+
+    public final CachingHttpClientBuilder setCacheConfig(
+            final CacheConfig cacheConfig) {
+        this.cacheConfig = cacheConfig;
+        return this;
+    }
+
+    public final CachingHttpClientBuilder setSchedulingStrategy(
+            final SchedulingStrategy schedulingStrategy) {
+        this.schedulingStrategy = schedulingStrategy;
+        return this;
+    }
+
+    public final CachingHttpClientBuilder setHttpCacheInvalidator(
+            final HttpCacheInvalidator cacheInvalidator) {
+        this.httpCacheInvalidator = cacheInvalidator;
+        return this;
+    }
+
+    @Override
+    protected ClientExecChain decorateMainExec(final ClientExecChain mainExec) {
+        final CacheConfig config = this.cacheConfig != null ? this.cacheConfig : CacheConfig.DEFAULT;
+        ResourceFactory resourceFactory = this.resourceFactory;
+        if (resourceFactory == null) {
+            if (this.cacheDir == null) {
+                resourceFactory = new HeapResourceFactory();
+            } else {
+                resourceFactory = new FileResourceFactory(cacheDir);
+            }
+        }
+        HttpCacheStorage storage = this.storage;
+        if (storage == null) {
+            if (this.cacheDir == null) {
+                storage = new BasicHttpCacheStorage(config);
+            } else {
+                final ManagedHttpCacheStorage managedStorage = new ManagedHttpCacheStorage(config);
+                addCloseable(managedStorage);
+                storage = managedStorage;
+            }
+        }
+        final AsynchronousValidator revalidator = createAsynchronousRevalidator(config);
+        final CacheKeyGenerator uriExtractor = new CacheKeyGenerator();
+
+        HttpCacheInvalidator cacheInvalidator = this.httpCacheInvalidator;
+        if (cacheInvalidator == null) {
+            cacheInvalidator = new CacheInvalidator(uriExtractor, storage);
+        }
+
+        return new CachingExec(mainExec,
+                new BasicHttpCache(
+                        resourceFactory,
+                        storage, config,
+                        uriExtractor,
+                        cacheInvalidator), config, revalidator);
+    }
+
+    private AsynchronousValidator createAsynchronousRevalidator(final CacheConfig config) {
+        if (config.getAsynchronousWorkersMax() > 0) {
+            final SchedulingStrategy configuredSchedulingStrategy = createSchedulingStrategy(config);
+            final AsynchronousValidator revalidator = new AsynchronousValidator(
+                    configuredSchedulingStrategy);
+            addCloseable(revalidator);
+            return revalidator;
+        }
+        return null;
+    }
+
+    @SuppressWarnings("resource")
+    private SchedulingStrategy createSchedulingStrategy(final CacheConfig config) {
+        return schedulingStrategy != null ? schedulingStrategy : new ImmediateSchedulingStrategy(config);
+    }
+
+}