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/*
* Copyright (C) 2020 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 android.net;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.os.Parcel;
import android.os.Parcelable;
/**
* Provides identifying information of a QoS session. Sent to an application through
* {@link QosCallback}.
*
* @hide
*/
@SystemApi
public final class QosSession implements Parcelable {
/**
* The {@link QosSession} is a LTE EPS Session.
*/
public static final int TYPE_EPS_BEARER = 1;
/**
* The {@link QosSession} is a NR Session.
*/
public static final int TYPE_NR_BEARER = 2;
private final int mSessionId;
private final int mSessionType;
/**
* Gets the unique id of the session that is used to differentiate sessions across different
* types.
* <p/>
* Note: Different qos sessions can be provided by different actors.
*
* @return the unique id
*/
public long getUniqueId() {
return (long) mSessionType << 32 | mSessionId;
}
/**
* Gets the {@link QosSession} identifier which is set by the actor providing the QoS.
* <p/>
* Note: It can be either manufactured by the actor, but also may have a particular meaning
* within that type. For example, using the bearer id as the session id for
* {@link android.telephony.data.EpsBearerQosSessionAttributes} is a straight forward way to
* keep the sessions unique from one another within that type.
*
* @return the id of the session
*/
public int getSessionId() {
return mSessionId;
}
/**
* Gets the type of session.
*/
@QosSessionType
public int getSessionType() {
return mSessionType;
}
/**
* Creates a {@link QosSession}.
*
* @param sessionId uniquely identifies the session across all sessions of the same type
* @param sessionType the type of session
*/
public QosSession(final int sessionId, @QosSessionType final int sessionType) {
//Ensures the session id is unique across types of sessions
mSessionId = sessionId;
mSessionType = sessionType;
}
@Override
public String toString() {
return "QosSession{"
+ "mSessionId=" + mSessionId
+ ", mSessionType=" + mSessionType
+ '}';
}
/**
* Annotations for types of qos sessions.
*/
@IntDef(value = {
TYPE_EPS_BEARER,
TYPE_NR_BEARER,
})
@interface QosSessionType {}
private QosSession(final Parcel in) {
mSessionId = in.readInt();
mSessionType = in.readInt();
}
@NonNull
public static final Creator<QosSession> CREATOR = new Creator<QosSession>() {
@NonNull
@Override
public QosSession createFromParcel(@NonNull final Parcel in) {
return new QosSession(in);
}
@NonNull
@Override
public QosSession[] newArray(final int size) {
return new QosSession[size];
}
};
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(@NonNull final Parcel dest, final int flags) {
dest.writeInt(mSessionId);
dest.writeInt(mSessionType);
}
}
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