1/*
2 * Copyright (C) 2016 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
17package android.net.wifi.aware;
18
19import android.annotation.NonNull;
20import android.util.Log;
21
22/**
23 * A class representing a Aware publish session. Created when
24 * {@link WifiAwareSession#publish(PublishConfig, DiscoverySessionCallback,
25 * android.os.Handler)} is called and a discovery session is created and returned in
26 * {@link DiscoverySessionCallback#onPublishStarted(PublishDiscoverySession)}. See
27 * baseline functionality of all discovery sessions in {@link DiscoverySession}. This
28 * object allows updating an existing/running publish discovery session using
29 * {@link #updatePublish(PublishConfig)}.
30 */
31public class PublishDiscoverySession extends DiscoverySession {
32    private static final String TAG = "PublishDiscoverySession";
33
34    /** @hide */
35    public PublishDiscoverySession(WifiAwareManager manager, int clientId, int sessionId) {
36        super(manager, clientId, sessionId);
37    }
38
39    /**
40     * Re-configure the currently active publish session. The
41     * {@link DiscoverySessionCallback} is not replaced - the same listener used
42     * at creation is still used. The results of the configuration are returned using
43     * {@link DiscoverySessionCallback}:
44     * <ul>
45     *     <li>{@link DiscoverySessionCallback#onSessionConfigUpdated()}: configuration
46     *     update succeeded.
47     *     <li>{@link DiscoverySessionCallback#onSessionConfigFailed()}: configuration
48     *     update failed. The publish discovery session is still running using its previous
49     *     configuration (i.e. update failure does not terminate the session).
50     * </ul>
51     *
52     * @param publishConfig The new discovery publish session configuration ({@link PublishConfig}).
53     */
54    public void updatePublish(@NonNull PublishConfig publishConfig) {
55        if (mTerminated) {
56            Log.w(TAG, "updatePublish: called on terminated session");
57            return;
58        } else {
59            WifiAwareManager mgr = mMgr.get();
60            if (mgr == null) {
61                Log.w(TAG, "updatePublish: called post GC on WifiAwareManager");
62                return;
63            }
64
65            mgr.updatePublish(mClientId, mSessionId, publishConfig);
66        }
67    }
68}
69