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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 android.net.metrics;
import android.annotation.IntDef;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.SparseArray;
import com.android.internal.util.MessageUtils;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/**
* An event recorded by NetworkMonitor when sending a probe for finding captive portals.
* {@hide}
*/
public final class ValidationProbeEvent implements Parcelable {
public static final int PROBE_DNS = 0;
public static final int PROBE_HTTP = 1;
public static final int PROBE_HTTPS = 2;
public static final int PROBE_PAC = 3;
public static final int PROBE_FALLBACK = 4;
public static final int DNS_FAILURE = 0;
public static final int DNS_SUCCESS = 1;
private static final int FIRST_VALIDATION = 1 << 8;
private static final int REVALIDATION = 2 << 8;
@IntDef(value = {DNS_FAILURE, DNS_SUCCESS})
@Retention(RetentionPolicy.SOURCE)
public @interface ReturnCode {}
public long durationMs;
// probeType byte format (MSB to LSB):
// byte 0: unused
// byte 1: unused
// byte 2: 0 = UNKNOWN, 1 = FIRST_VALIDATION, 2 = REVALIDATION
// byte 3: PROBE_* constant
public int probeType;
public @ReturnCode int returnCode;
public ValidationProbeEvent() {
}
private ValidationProbeEvent(Parcel in) {
durationMs = in.readLong();
probeType = in.readInt();
returnCode = in.readInt();
}
@Override
public void writeToParcel(Parcel out, int flags) {
out.writeLong(durationMs);
out.writeInt(probeType);
out.writeInt(returnCode);
}
@Override
public int describeContents() {
return 0;
}
public static final Parcelable.Creator<ValidationProbeEvent> CREATOR
= new Parcelable.Creator<ValidationProbeEvent>() {
public ValidationProbeEvent createFromParcel(Parcel in) {
return new ValidationProbeEvent(in);
}
public ValidationProbeEvent[] newArray(int size) {
return new ValidationProbeEvent[size];
}
};
public static int makeProbeType(int probeType, boolean firstValidation) {
return (probeType & 0xff) | (firstValidation ? FIRST_VALIDATION : REVALIDATION);
}
public static String getProbeName(int probeType) {
return Decoder.constants.get(probeType & 0xff, "PROBE_???");
}
public static String getValidationStage(int probeType) {
return Decoder.constants.get(probeType & 0xff00, "UNKNOWN");
}
@Override
public String toString() {
return String.format("ValidationProbeEvent(%s:%d %s, %dms)",
getProbeName(probeType), returnCode, getValidationStage(probeType), durationMs);
}
final static class Decoder {
static final SparseArray<String> constants = MessageUtils.findMessageNames(
new Class[]{ValidationProbeEvent.class},
new String[]{"PROBE_", "FIRST_", "REVALIDATION"});
}
}
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