The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | /** |
| 18 | * High level HTTP Interface |
| 19 | * Queues requests as necessary |
| 20 | */ |
| 21 | |
| 22 | package android.net.http; |
| 23 | |
| 24 | import android.content.BroadcastReceiver; |
| 25 | import android.content.Context; |
| 26 | import android.content.Intent; |
| 27 | import android.content.IntentFilter; |
| 28 | import android.net.ConnectivityManager; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 29 | import android.net.NetworkInfo; |
| 30 | import android.net.Proxy; |
| 31 | import android.net.WebAddress; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 32 | import android.util.Log; |
| 33 | |
| 34 | import java.io.InputStream; |
| 35 | import java.util.Iterator; |
| 36 | import java.util.LinkedHashMap; |
| 37 | import java.util.LinkedList; |
| 38 | import java.util.ListIterator; |
| 39 | import java.util.Map; |
| 40 | |
| 41 | import org.apache.http.HttpHost; |
| 42 | |
| 43 | /** |
| 44 | * {@hide} |
| 45 | */ |
| 46 | public class RequestQueue implements RequestFeeder { |
| 47 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 48 | |
| 49 | /** |
| 50 | * Requests, indexed by HttpHost (scheme, host, port) |
| 51 | */ |
Patrick Scott | aaebc86 | 2009-09-16 09:59:12 -0400 | [diff] [blame] | 52 | private final LinkedHashMap<HttpHost, LinkedList<Request>> mPending; |
| 53 | private final Context mContext; |
| 54 | private final ActivePool mActivePool; |
| 55 | private final ConnectivityManager mConnectivityManager; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 56 | |
| 57 | private HttpHost mProxyHost = null; |
| 58 | private BroadcastReceiver mProxyChangeReceiver; |
| 59 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 60 | /* default simultaneous connection count */ |
| 61 | private static final int CONNECTION_COUNT = 4; |
| 62 | |
| 63 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 64 | * This class maintains active connection threads |
| 65 | */ |
| 66 | class ActivePool implements ConnectionManager { |
| 67 | /** Threads used to process requests */ |
| 68 | ConnectionThread[] mThreads; |
| 69 | |
| 70 | IdleCache mIdleCache; |
| 71 | |
| 72 | private int mTotalRequest; |
| 73 | private int mTotalConnection; |
| 74 | private int mConnectionCount; |
| 75 | |
| 76 | ActivePool(int connectionCount) { |
| 77 | mIdleCache = new IdleCache(); |
| 78 | mConnectionCount = connectionCount; |
| 79 | mThreads = new ConnectionThread[mConnectionCount]; |
| 80 | |
| 81 | for (int i = 0; i < mConnectionCount; i++) { |
| 82 | mThreads[i] = new ConnectionThread( |
| 83 | mContext, i, this, RequestQueue.this); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | void startup() { |
| 88 | for (int i = 0; i < mConnectionCount; i++) { |
| 89 | mThreads[i].start(); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | void shutdown() { |
| 94 | for (int i = 0; i < mConnectionCount; i++) { |
| 95 | mThreads[i].requestStop(); |
| 96 | } |
| 97 | } |
| 98 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 99 | void startConnectionThread() { |
| 100 | synchronized (RequestQueue.this) { |
| 101 | RequestQueue.this.notify(); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | public void startTiming() { |
| 106 | for (int i = 0; i < mConnectionCount; i++) { |
Grace Kloba | 340a1b2 | 2009-07-02 15:30:34 -0700 | [diff] [blame] | 107 | ConnectionThread rt = mThreads[i]; |
| 108 | rt.mCurrentThreadTime = -1; |
| 109 | rt.mTotalThreadTime = 0; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 110 | } |
| 111 | mTotalRequest = 0; |
| 112 | mTotalConnection = 0; |
| 113 | } |
| 114 | |
| 115 | public void stopTiming() { |
| 116 | int totalTime = 0; |
| 117 | for (int i = 0; i < mConnectionCount; i++) { |
| 118 | ConnectionThread rt = mThreads[i]; |
Grace Kloba | 340a1b2 | 2009-07-02 15:30:34 -0700 | [diff] [blame] | 119 | if (rt.mCurrentThreadTime != -1) { |
| 120 | totalTime += rt.mTotalThreadTime; |
| 121 | } |
| 122 | rt.mCurrentThreadTime = 0; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 123 | } |
| 124 | Log.d("Http", "Http thread used " + totalTime + " ms " + " for " |
| 125 | + mTotalRequest + " requests and " + mTotalConnection |
Grace Kloba | 340a1b2 | 2009-07-02 15:30:34 -0700 | [diff] [blame] | 126 | + " new connections"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | void logState() { |
| 130 | StringBuilder dump = new StringBuilder(); |
| 131 | for (int i = 0; i < mConnectionCount; i++) { |
| 132 | dump.append(mThreads[i] + "\n"); |
| 133 | } |
| 134 | HttpLog.v(dump.toString()); |
| 135 | } |
| 136 | |
| 137 | |
| 138 | public HttpHost getProxyHost() { |
| 139 | return mProxyHost; |
| 140 | } |
| 141 | |
| 142 | /** |
| 143 | * Turns off persistence on all live connections |
| 144 | */ |
| 145 | void disablePersistence() { |
| 146 | for (int i = 0; i < mConnectionCount; i++) { |
| 147 | Connection connection = mThreads[i].mConnection; |
| 148 | if (connection != null) connection.setCanPersist(false); |
| 149 | } |
| 150 | mIdleCache.clear(); |
| 151 | } |
| 152 | |
| 153 | /* Linear lookup -- okay for small thread counts. Might use |
| 154 | private HashMap<HttpHost, LinkedList<ConnectionThread>> mActiveMap; |
| 155 | if this turns out to be a hotspot */ |
| 156 | ConnectionThread getThread(HttpHost host) { |
| 157 | synchronized(RequestQueue.this) { |
| 158 | for (int i = 0; i < mThreads.length; i++) { |
| 159 | ConnectionThread ct = mThreads[i]; |
| 160 | Connection connection = ct.mConnection; |
| 161 | if (connection != null && connection.mHost.equals(host)) { |
| 162 | return ct; |
| 163 | } |
| 164 | } |
| 165 | } |
| 166 | return null; |
| 167 | } |
| 168 | |
| 169 | public Connection getConnection(Context context, HttpHost host) { |
Patrick Scott | 86806ce1 | 2009-10-01 15:54:46 -0400 | [diff] [blame] | 170 | host = RequestQueue.this.determineHost(host); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 171 | Connection con = mIdleCache.getConnection(host); |
| 172 | if (con == null) { |
| 173 | mTotalConnection++; |
Patrick Scott | 86806ce1 | 2009-10-01 15:54:46 -0400 | [diff] [blame] | 174 | con = Connection.getConnection(mContext, host, mProxyHost, |
| 175 | RequestQueue.this); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 176 | } |
| 177 | return con; |
| 178 | } |
Patrick Scott | 86806ce1 | 2009-10-01 15:54:46 -0400 | [diff] [blame] | 179 | public boolean recycleConnection(Connection connection) { |
| 180 | return mIdleCache.cacheConnection(connection.getHost(), connection); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | } |
| 184 | |
| 185 | /** |
| 186 | * A RequestQueue class instance maintains a set of queued |
| 187 | * requests. It orders them, makes the requests against HTTP |
| 188 | * servers, and makes callbacks to supplied eventHandlers as data |
| 189 | * is read. It supports request prioritization, connection reuse |
| 190 | * and pipelining. |
| 191 | * |
| 192 | * @param context application context |
| 193 | */ |
| 194 | public RequestQueue(Context context) { |
| 195 | this(context, CONNECTION_COUNT); |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * A RequestQueue class instance maintains a set of queued |
| 200 | * requests. It orders them, makes the requests against HTTP |
| 201 | * servers, and makes callbacks to supplied eventHandlers as data |
| 202 | * is read. It supports request prioritization, connection reuse |
| 203 | * and pipelining. |
| 204 | * |
| 205 | * @param context application context |
| 206 | * @param connectionCount The number of simultaneous connections |
| 207 | */ |
| 208 | public RequestQueue(Context context, int connectionCount) { |
| 209 | mContext = context; |
| 210 | |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 211 | mPending = new LinkedHashMap<HttpHost, LinkedList<Request>>(32); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 212 | |
| 213 | mActivePool = new ActivePool(connectionCount); |
| 214 | mActivePool.startup(); |
Patrick Scott | aaebc86 | 2009-09-16 09:59:12 -0400 | [diff] [blame] | 215 | |
| 216 | mConnectivityManager = (ConnectivityManager) |
| 217 | context.getSystemService(Context.CONNECTIVITY_SERVICE); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Enables data state and proxy tracking |
| 222 | */ |
| 223 | public synchronized void enablePlatformNotifications() { |
| 224 | if (HttpLog.LOGV) HttpLog.v("RequestQueue.enablePlatformNotifications() network"); |
| 225 | |
| 226 | if (mProxyChangeReceiver == null) { |
| 227 | mProxyChangeReceiver = |
| 228 | new BroadcastReceiver() { |
| 229 | @Override |
| 230 | public void onReceive(Context ctx, Intent intent) { |
| 231 | setProxyConfig(); |
| 232 | } |
| 233 | }; |
| 234 | mContext.registerReceiver(mProxyChangeReceiver, |
| 235 | new IntentFilter(Proxy.PROXY_CHANGE_ACTION)); |
| 236 | } |
Robert Greenwalt | f1cac90 | 2010-03-30 19:15:32 -0700 | [diff] [blame] | 237 | // we need to resample the current proxy setup |
| 238 | setProxyConfig(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | /** |
| 242 | * If platform notifications have been enabled, call this method |
| 243 | * to disable before destroying RequestQueue |
| 244 | */ |
| 245 | public synchronized void disablePlatformNotifications() { |
| 246 | if (HttpLog.LOGV) HttpLog.v("RequestQueue.disablePlatformNotifications() network"); |
| 247 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 248 | if (mProxyChangeReceiver != null) { |
| 249 | mContext.unregisterReceiver(mProxyChangeReceiver); |
| 250 | mProxyChangeReceiver = null; |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | /** |
| 255 | * Because our IntentReceiver can run within a different thread, |
| 256 | * synchronize setting the proxy |
| 257 | */ |
| 258 | private synchronized void setProxyConfig() { |
Patrick Scott | aaebc86 | 2009-09-16 09:59:12 -0400 | [diff] [blame] | 259 | NetworkInfo info = mConnectivityManager.getActiveNetworkInfo(); |
| 260 | if (info != null && info.getType() == ConnectivityManager.TYPE_WIFI) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 261 | mProxyHost = null; |
| 262 | } else { |
| 263 | String host = Proxy.getHost(mContext); |
| 264 | if (HttpLog.LOGV) HttpLog.v("RequestQueue.setProxyConfig " + host); |
| 265 | if (host == null) { |
| 266 | mProxyHost = null; |
| 267 | } else { |
| 268 | mActivePool.disablePersistence(); |
| 269 | mProxyHost = new HttpHost(host, Proxy.getPort(mContext), "http"); |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * used by webkit |
| 276 | * @return proxy host if set, null otherwise |
| 277 | */ |
| 278 | public HttpHost getProxyHost() { |
| 279 | return mProxyHost; |
| 280 | } |
| 281 | |
| 282 | /** |
| 283 | * Queues an HTTP request |
| 284 | * @param url The url to load. |
| 285 | * @param method "GET" or "POST." |
| 286 | * @param headers A hashmap of http headers. |
| 287 | * @param eventHandler The event handler for handling returned |
| 288 | * data. Callbacks will be made on the supplied instance. |
| 289 | * @param bodyProvider InputStream providing HTTP body, null if none |
| 290 | * @param bodyLength length of body, must be 0 if bodyProvider is null |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 291 | */ |
| 292 | public RequestHandle queueRequest( |
| 293 | String url, String method, |
| 294 | Map<String, String> headers, EventHandler eventHandler, |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 295 | InputStream bodyProvider, int bodyLength) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 296 | WebAddress uri = new WebAddress(url); |
| 297 | return queueRequest(url, uri, method, headers, eventHandler, |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 298 | bodyProvider, bodyLength); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Queues an HTTP request |
| 303 | * @param url The url to load. |
| 304 | * @param uri The uri of the url to load. |
| 305 | * @param method "GET" or "POST." |
| 306 | * @param headers A hashmap of http headers. |
| 307 | * @param eventHandler The event handler for handling returned |
| 308 | * data. Callbacks will be made on the supplied instance. |
| 309 | * @param bodyProvider InputStream providing HTTP body, null if none |
| 310 | * @param bodyLength length of body, must be 0 if bodyProvider is null |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 311 | */ |
| 312 | public RequestHandle queueRequest( |
| 313 | String url, WebAddress uri, String method, Map<String, String> headers, |
| 314 | EventHandler eventHandler, |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 315 | InputStream bodyProvider, int bodyLength) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 316 | |
| 317 | if (HttpLog.LOGV) HttpLog.v("RequestQueue.queueRequest " + uri); |
| 318 | |
| 319 | // Ensure there is an eventHandler set |
| 320 | if (eventHandler == null) { |
| 321 | eventHandler = new LoggingEventHandler(); |
| 322 | } |
| 323 | |
| 324 | /* Create and queue request */ |
| 325 | Request req; |
Bjorn Bringert | eb8be97 | 2010-10-12 16:24:55 +0100 | [diff] [blame] | 326 | HttpHost httpHost = new HttpHost(uri.getHost(), uri.getPort(), uri.getScheme()); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 327 | |
| 328 | // set up request |
Bjorn Bringert | eb8be97 | 2010-10-12 16:24:55 +0100 | [diff] [blame] | 329 | req = new Request(method, httpHost, mProxyHost, uri.getPath(), bodyProvider, |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 330 | bodyLength, eventHandler, headers); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 331 | |
Patrick Scott | b5b33c7 | 2009-05-15 13:47:17 -0400 | [diff] [blame] | 332 | queueRequest(req, false); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 333 | |
| 334 | mActivePool.mTotalRequest++; |
| 335 | |
| 336 | // dump(); |
| 337 | mActivePool.startConnectionThread(); |
| 338 | |
| 339 | return new RequestHandle( |
| 340 | this, url, uri, method, headers, bodyProvider, bodyLength, |
| 341 | req); |
| 342 | } |
| 343 | |
Patrick Scott | 86806ce1 | 2009-10-01 15:54:46 -0400 | [diff] [blame] | 344 | private static class SyncFeeder implements RequestFeeder { |
| 345 | // This is used in the case where the request fails and needs to be |
| 346 | // requeued into the RequestFeeder. |
| 347 | private Request mRequest; |
| 348 | SyncFeeder() { |
| 349 | } |
| 350 | public Request getRequest() { |
| 351 | Request r = mRequest; |
| 352 | mRequest = null; |
| 353 | return r; |
| 354 | } |
| 355 | public Request getRequest(HttpHost host) { |
| 356 | return getRequest(); |
| 357 | } |
| 358 | public boolean haveRequest(HttpHost host) { |
| 359 | return mRequest != null; |
| 360 | } |
| 361 | public void requeueRequest(Request r) { |
| 362 | mRequest = r; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | public RequestHandle queueSynchronousRequest(String url, WebAddress uri, |
| 367 | String method, Map<String, String> headers, |
| 368 | EventHandler eventHandler, InputStream bodyProvider, |
| 369 | int bodyLength) { |
| 370 | if (HttpLog.LOGV) { |
| 371 | HttpLog.v("RequestQueue.dispatchSynchronousRequest " + uri); |
| 372 | } |
| 373 | |
Bjorn Bringert | eb8be97 | 2010-10-12 16:24:55 +0100 | [diff] [blame] | 374 | HttpHost host = new HttpHost(uri.getHost(), uri.getPort(), uri.getScheme()); |
Patrick Scott | 86806ce1 | 2009-10-01 15:54:46 -0400 | [diff] [blame] | 375 | |
Bjorn Bringert | eb8be97 | 2010-10-12 16:24:55 +0100 | [diff] [blame] | 376 | Request req = new Request(method, host, mProxyHost, uri.getPath(), |
Patrick Scott | 86806ce1 | 2009-10-01 15:54:46 -0400 | [diff] [blame] | 377 | bodyProvider, bodyLength, eventHandler, headers); |
| 378 | |
| 379 | // Open a new connection that uses our special RequestFeeder |
| 380 | // implementation. |
| 381 | host = determineHost(host); |
| 382 | Connection conn = Connection.getConnection(mContext, host, mProxyHost, |
| 383 | new SyncFeeder()); |
| 384 | |
| 385 | // TODO: I would like to process the request here but LoadListener |
| 386 | // needs a RequestHandle to process some messages. |
| 387 | return new RequestHandle(this, url, uri, method, headers, bodyProvider, |
| 388 | bodyLength, req, conn); |
| 389 | |
| 390 | } |
| 391 | |
| 392 | // Chooses between the proxy and the request's host. |
| 393 | private HttpHost determineHost(HttpHost host) { |
| 394 | // There used to be a comment in ConnectionThread about t-mob's proxy |
| 395 | // being really bad about https. But, HttpsConnection actually looks |
| 396 | // for a proxy and connects through it anyway. I think that this check |
| 397 | // is still valid because if a site is https, we will use |
| 398 | // HttpsConnection rather than HttpConnection if the proxy address is |
| 399 | // not secure. |
| 400 | return (mProxyHost == null || "https".equals(host.getSchemeName())) |
| 401 | ? host : mProxyHost; |
| 402 | } |
| 403 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 404 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 405 | * @return true iff there are any non-active requests pending |
| 406 | */ |
| 407 | synchronized boolean requestsPending() { |
| 408 | return !mPending.isEmpty(); |
| 409 | } |
| 410 | |
| 411 | |
| 412 | /** |
| 413 | * debug tool: prints request queue to log |
| 414 | */ |
| 415 | synchronized void dump() { |
| 416 | HttpLog.v("dump()"); |
| 417 | StringBuilder dump = new StringBuilder(); |
| 418 | int count = 0; |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 419 | Iterator<Map.Entry<HttpHost, LinkedList<Request>>> iter; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 420 | |
| 421 | // mActivePool.log(dump); |
| 422 | |
| 423 | if (!mPending.isEmpty()) { |
| 424 | iter = mPending.entrySet().iterator(); |
| 425 | while (iter.hasNext()) { |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 426 | Map.Entry<HttpHost, LinkedList<Request>> entry = iter.next(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 427 | String hostName = entry.getKey().getHostName(); |
| 428 | StringBuilder line = new StringBuilder("p" + count++ + " " + hostName + " "); |
| 429 | |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 430 | LinkedList<Request> reqList = entry.getValue(); |
| 431 | ListIterator reqIter = reqList.listIterator(0); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 432 | while (iter.hasNext()) { |
| 433 | Request request = (Request)iter.next(); |
| 434 | line.append(request + " "); |
| 435 | } |
| 436 | dump.append(line); |
| 437 | dump.append("\n"); |
| 438 | } |
| 439 | } |
| 440 | HttpLog.v(dump.toString()); |
| 441 | } |
| 442 | |
| 443 | /* |
| 444 | * RequestFeeder implementation |
| 445 | */ |
| 446 | public synchronized Request getRequest() { |
| 447 | Request ret = null; |
| 448 | |
Patrick Scott | aaebc86 | 2009-09-16 09:59:12 -0400 | [diff] [blame] | 449 | if (!mPending.isEmpty()) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 450 | ret = removeFirst(mPending); |
| 451 | } |
| 452 | if (HttpLog.LOGV) HttpLog.v("RequestQueue.getRequest() => " + ret); |
| 453 | return ret; |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | * @return a request for given host if possible |
| 458 | */ |
| 459 | public synchronized Request getRequest(HttpHost host) { |
| 460 | Request ret = null; |
| 461 | |
Patrick Scott | aaebc86 | 2009-09-16 09:59:12 -0400 | [diff] [blame] | 462 | if (mPending.containsKey(host)) { |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 463 | LinkedList<Request> reqList = mPending.get(host); |
Grace Kloba | a16de7b | 2009-07-24 16:27:11 -0700 | [diff] [blame] | 464 | ret = reqList.removeFirst(); |
| 465 | if (reqList.isEmpty()) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 466 | mPending.remove(host); |
| 467 | } |
| 468 | } |
| 469 | if (HttpLog.LOGV) HttpLog.v("RequestQueue.getRequest(" + host + ") => " + ret); |
| 470 | return ret; |
| 471 | } |
| 472 | |
| 473 | /** |
| 474 | * @return true if a request for this host is available |
| 475 | */ |
| 476 | public synchronized boolean haveRequest(HttpHost host) { |
| 477 | return mPending.containsKey(host); |
| 478 | } |
| 479 | |
| 480 | /** |
| 481 | * Put request back on head of queue |
| 482 | */ |
| 483 | public void requeueRequest(Request request) { |
| 484 | queueRequest(request, true); |
| 485 | } |
| 486 | |
| 487 | /** |
| 488 | * This must be called to cleanly shutdown RequestQueue |
| 489 | */ |
| 490 | public void shutdown() { |
| 491 | mActivePool.shutdown(); |
| 492 | } |
| 493 | |
| 494 | protected synchronized void queueRequest(Request request, boolean head) { |
| 495 | HttpHost host = request.mProxyHost == null ? request.mHost : request.mProxyHost; |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 496 | LinkedList<Request> reqList; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 497 | if (mPending.containsKey(host)) { |
| 498 | reqList = mPending.get(host); |
| 499 | } else { |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 500 | reqList = new LinkedList<Request>(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 501 | mPending.put(host, reqList); |
| 502 | } |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 503 | if (head) { |
| 504 | reqList.addFirst(request); |
| 505 | } else { |
| 506 | reqList.add(request); |
| 507 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | |
| 511 | public void startTiming() { |
| 512 | mActivePool.startTiming(); |
| 513 | } |
| 514 | |
| 515 | public void stopTiming() { |
| 516 | mActivePool.stopTiming(); |
| 517 | } |
| 518 | |
| 519 | /* helper */ |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 520 | private Request removeFirst(LinkedHashMap<HttpHost, LinkedList<Request>> requestQueue) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 521 | Request ret = null; |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 522 | Iterator<Map.Entry<HttpHost, LinkedList<Request>>> iter = requestQueue.entrySet().iterator(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 523 | if (iter.hasNext()) { |
Patrick Scott | fe4fec7 | 2009-07-14 15:54:30 -0400 | [diff] [blame] | 524 | Map.Entry<HttpHost, LinkedList<Request>> entry = iter.next(); |
| 525 | LinkedList<Request> reqList = entry.getValue(); |
Grace Kloba | a16de7b | 2009-07-24 16:27:11 -0700 | [diff] [blame] | 526 | ret = reqList.removeFirst(); |
| 527 | if (reqList.isEmpty()) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 528 | requestQueue.remove(entry.getKey()); |
| 529 | } |
| 530 | } |
| 531 | return ret; |
| 532 | } |
| 533 | |
| 534 | /** |
| 535 | * This interface is exposed to each connection |
| 536 | */ |
| 537 | interface ConnectionManager { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 538 | HttpHost getProxyHost(); |
| 539 | Connection getConnection(Context context, HttpHost host); |
Patrick Scott | 86806ce1 | 2009-10-01 15:54:46 -0400 | [diff] [blame] | 540 | boolean recycleConnection(Connection connection); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 541 | } |
| 542 | } |