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/*
* Copyright (C) 2016 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.server.wifi.hotspot2;
import com.android.internal.annotations.VisibleForTesting;
import com.android.server.wifi.Clock;
import com.android.server.wifi.hotspot2.anqp.ANQPElement;
import com.android.server.wifi.hotspot2.anqp.Constants;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* Class for maintaining ANQP elements and managing the lifetime of the elements.
*/
public class ANQPData {
/**
* Entry lifetime.
*/
@VisibleForTesting
public static final long DATA_LIFETIME_MILLISECONDS = 3600000L;
private final Clock mClock;
private final Map<Constants.ANQPElementType, ANQPElement> mANQPElements;
private final long mExpiryTime;
public ANQPData(Clock clock, Map<Constants.ANQPElementType, ANQPElement> anqpElements) {
mClock = clock;
mANQPElements = new HashMap<>();
if (anqpElements != null) {
mANQPElements.putAll(anqpElements);
}
mExpiryTime = mClock.getElapsedSinceBootMillis() + DATA_LIFETIME_MILLISECONDS;
}
/**
* Return the ANQP elements.
*
* @return Map of ANQP elements
*/
public Map<Constants.ANQPElementType, ANQPElement> getElements() {
return Collections.unmodifiableMap(mANQPElements);
}
/**
* Check if this entry is expired at the specified time.
*
* @param at The time to check for
* @return true if it is expired at the given time
*/
public boolean expired(long at) {
return mExpiryTime <= at;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(mANQPElements.size()).append(" elements, ");
long now = mClock.getElapsedSinceBootMillis();
sb.append(" expires in ").append(Utils.toHMS(mExpiryTime - now)).append(' ');
sb.append(expired(now) ? 'x' : '-').append("\n");
for (Map.Entry<Constants.ANQPElementType, ANQPElement> entry: mANQPElements.entrySet()) {
sb.append(entry.getValue()).append("\n");
}
return sb.toString();
}
}
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