/*
|
* Copyright (C) 2011 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 static android.net.NetworkStats.IFACE_ALL;
|
import static android.net.NetworkStats.SET_DEFAULT;
|
import static android.net.NetworkStats.TAG_NONE;
|
import static android.net.NetworkStats.UID_ALL;
|
import static android.net.NetworkStatsHistory.DataStreamUtils.readFullLongArray;
|
import static android.net.NetworkStatsHistory.DataStreamUtils.readVarLongArray;
|
import static android.net.NetworkStatsHistory.DataStreamUtils.writeVarLongArray;
|
import static android.net.NetworkStatsHistory.Entry.UNKNOWN;
|
import static android.net.NetworkStatsHistory.ParcelUtils.readLongArray;
|
import static android.net.NetworkStatsHistory.ParcelUtils.writeLongArray;
|
import static android.text.format.DateUtils.SECOND_IN_MILLIS;
|
|
import static com.android.internal.util.ArrayUtils.total;
|
|
import android.annotation.UnsupportedAppUsage;
|
import android.os.Parcel;
|
import android.os.Parcelable;
|
import android.service.NetworkStatsHistoryBucketProto;
|
import android.service.NetworkStatsHistoryProto;
|
import android.util.MathUtils;
|
import android.util.proto.ProtoOutputStream;
|
|
import com.android.internal.util.IndentingPrintWriter;
|
|
import libcore.util.EmptyArray;
|
|
import java.io.CharArrayWriter;
|
import java.io.DataInputStream;
|
import java.io.DataOutputStream;
|
import java.io.IOException;
|
import java.io.PrintWriter;
|
import java.net.ProtocolException;
|
import java.util.Arrays;
|
import java.util.Random;
|
|
/**
|
* Collection of historical network statistics, recorded into equally-sized
|
* "buckets" in time. Internally it stores data in {@code long} series for more
|
* efficient persistence.
|
* <p>
|
* Each bucket is defined by a {@link #bucketStart} timestamp, and lasts for
|
* {@link #bucketDuration}. Internally assumes that {@link #bucketStart} is
|
* sorted at all times.
|
*
|
* @hide
|
*/
|
public class NetworkStatsHistory implements Parcelable {
|
private static final int VERSION_INIT = 1;
|
private static final int VERSION_ADD_PACKETS = 2;
|
private static final int VERSION_ADD_ACTIVE = 3;
|
|
public static final int FIELD_ACTIVE_TIME = 0x01;
|
public static final int FIELD_RX_BYTES = 0x02;
|
public static final int FIELD_RX_PACKETS = 0x04;
|
public static final int FIELD_TX_BYTES = 0x08;
|
public static final int FIELD_TX_PACKETS = 0x10;
|
public static final int FIELD_OPERATIONS = 0x20;
|
|
public static final int FIELD_ALL = 0xFFFFFFFF;
|
|
private long bucketDuration;
|
private int bucketCount;
|
private long[] bucketStart;
|
private long[] activeTime;
|
private long[] rxBytes;
|
private long[] rxPackets;
|
private long[] txBytes;
|
private long[] txPackets;
|
private long[] operations;
|
private long totalBytes;
|
|
public static class Entry {
|
public static final long UNKNOWN = -1;
|
|
@UnsupportedAppUsage
|
public long bucketDuration;
|
@UnsupportedAppUsage
|
public long bucketStart;
|
public long activeTime;
|
@UnsupportedAppUsage
|
public long rxBytes;
|
@UnsupportedAppUsage
|
public long rxPackets;
|
@UnsupportedAppUsage
|
public long txBytes;
|
@UnsupportedAppUsage
|
public long txPackets;
|
public long operations;
|
}
|
|
@UnsupportedAppUsage
|
public NetworkStatsHistory(long bucketDuration) {
|
this(bucketDuration, 10, FIELD_ALL);
|
}
|
|
public NetworkStatsHistory(long bucketDuration, int initialSize) {
|
this(bucketDuration, initialSize, FIELD_ALL);
|
}
|
|
public NetworkStatsHistory(long bucketDuration, int initialSize, int fields) {
|
this.bucketDuration = bucketDuration;
|
bucketStart = new long[initialSize];
|
if ((fields & FIELD_ACTIVE_TIME) != 0) activeTime = new long[initialSize];
|
if ((fields & FIELD_RX_BYTES) != 0) rxBytes = new long[initialSize];
|
if ((fields & FIELD_RX_PACKETS) != 0) rxPackets = new long[initialSize];
|
if ((fields & FIELD_TX_BYTES) != 0) txBytes = new long[initialSize];
|
if ((fields & FIELD_TX_PACKETS) != 0) txPackets = new long[initialSize];
|
if ((fields & FIELD_OPERATIONS) != 0) operations = new long[initialSize];
|
bucketCount = 0;
|
totalBytes = 0;
|
}
|
|
public NetworkStatsHistory(NetworkStatsHistory existing, long bucketDuration) {
|
this(bucketDuration, existing.estimateResizeBuckets(bucketDuration));
|
recordEntireHistory(existing);
|
}
|
|
@UnsupportedAppUsage
|
public NetworkStatsHistory(Parcel in) {
|
bucketDuration = in.readLong();
|
bucketStart = readLongArray(in);
|
activeTime = readLongArray(in);
|
rxBytes = readLongArray(in);
|
rxPackets = readLongArray(in);
|
txBytes = readLongArray(in);
|
txPackets = readLongArray(in);
|
operations = readLongArray(in);
|
bucketCount = bucketStart.length;
|
totalBytes = in.readLong();
|
}
|
|
@Override
|
public void writeToParcel(Parcel out, int flags) {
|
out.writeLong(bucketDuration);
|
writeLongArray(out, bucketStart, bucketCount);
|
writeLongArray(out, activeTime, bucketCount);
|
writeLongArray(out, rxBytes, bucketCount);
|
writeLongArray(out, rxPackets, bucketCount);
|
writeLongArray(out, txBytes, bucketCount);
|
writeLongArray(out, txPackets, bucketCount);
|
writeLongArray(out, operations, bucketCount);
|
out.writeLong(totalBytes);
|
}
|
|
public NetworkStatsHistory(DataInputStream in) throws IOException {
|
final int version = in.readInt();
|
switch (version) {
|
case VERSION_INIT: {
|
bucketDuration = in.readLong();
|
bucketStart = readFullLongArray(in);
|
rxBytes = readFullLongArray(in);
|
rxPackets = new long[bucketStart.length];
|
txBytes = readFullLongArray(in);
|
txPackets = new long[bucketStart.length];
|
operations = new long[bucketStart.length];
|
bucketCount = bucketStart.length;
|
totalBytes = total(rxBytes) + total(txBytes);
|
break;
|
}
|
case VERSION_ADD_PACKETS:
|
case VERSION_ADD_ACTIVE: {
|
bucketDuration = in.readLong();
|
bucketStart = readVarLongArray(in);
|
activeTime = (version >= VERSION_ADD_ACTIVE) ? readVarLongArray(in)
|
: new long[bucketStart.length];
|
rxBytes = readVarLongArray(in);
|
rxPackets = readVarLongArray(in);
|
txBytes = readVarLongArray(in);
|
txPackets = readVarLongArray(in);
|
operations = readVarLongArray(in);
|
bucketCount = bucketStart.length;
|
totalBytes = total(rxBytes) + total(txBytes);
|
break;
|
}
|
default: {
|
throw new ProtocolException("unexpected version: " + version);
|
}
|
}
|
|
if (bucketStart.length != bucketCount || rxBytes.length != bucketCount
|
|| rxPackets.length != bucketCount || txBytes.length != bucketCount
|
|| txPackets.length != bucketCount || operations.length != bucketCount) {
|
throw new ProtocolException("Mismatched history lengths");
|
}
|
}
|
|
public void writeToStream(DataOutputStream out) throws IOException {
|
out.writeInt(VERSION_ADD_ACTIVE);
|
out.writeLong(bucketDuration);
|
writeVarLongArray(out, bucketStart, bucketCount);
|
writeVarLongArray(out, activeTime, bucketCount);
|
writeVarLongArray(out, rxBytes, bucketCount);
|
writeVarLongArray(out, rxPackets, bucketCount);
|
writeVarLongArray(out, txBytes, bucketCount);
|
writeVarLongArray(out, txPackets, bucketCount);
|
writeVarLongArray(out, operations, bucketCount);
|
}
|
|
@Override
|
public int describeContents() {
|
return 0;
|
}
|
|
@UnsupportedAppUsage
|
public int size() {
|
return bucketCount;
|
}
|
|
public long getBucketDuration() {
|
return bucketDuration;
|
}
|
|
@UnsupportedAppUsage
|
public long getStart() {
|
if (bucketCount > 0) {
|
return bucketStart[0];
|
} else {
|
return Long.MAX_VALUE;
|
}
|
}
|
|
@UnsupportedAppUsage
|
public long getEnd() {
|
if (bucketCount > 0) {
|
return bucketStart[bucketCount - 1] + bucketDuration;
|
} else {
|
return Long.MIN_VALUE;
|
}
|
}
|
|
/**
|
* Return total bytes represented by this history.
|
*/
|
public long getTotalBytes() {
|
return totalBytes;
|
}
|
|
/**
|
* Return index of bucket that contains or is immediately before the
|
* requested time.
|
*/
|
@UnsupportedAppUsage
|
public int getIndexBefore(long time) {
|
int index = Arrays.binarySearch(bucketStart, 0, bucketCount, time);
|
if (index < 0) {
|
index = (~index) - 1;
|
} else {
|
index -= 1;
|
}
|
return MathUtils.constrain(index, 0, bucketCount - 1);
|
}
|
|
/**
|
* Return index of bucket that contains or is immediately after the
|
* requested time.
|
*/
|
public int getIndexAfter(long time) {
|
int index = Arrays.binarySearch(bucketStart, 0, bucketCount, time);
|
if (index < 0) {
|
index = ~index;
|
} else {
|
index += 1;
|
}
|
return MathUtils.constrain(index, 0, bucketCount - 1);
|
}
|
|
/**
|
* Return specific stats entry.
|
*/
|
@UnsupportedAppUsage
|
public Entry getValues(int i, Entry recycle) {
|
final Entry entry = recycle != null ? recycle : new Entry();
|
entry.bucketStart = bucketStart[i];
|
entry.bucketDuration = bucketDuration;
|
entry.activeTime = getLong(activeTime, i, UNKNOWN);
|
entry.rxBytes = getLong(rxBytes, i, UNKNOWN);
|
entry.rxPackets = getLong(rxPackets, i, UNKNOWN);
|
entry.txBytes = getLong(txBytes, i, UNKNOWN);
|
entry.txPackets = getLong(txPackets, i, UNKNOWN);
|
entry.operations = getLong(operations, i, UNKNOWN);
|
return entry;
|
}
|
|
public void setValues(int i, Entry entry) {
|
// Unwind old values
|
if (rxBytes != null) totalBytes -= rxBytes[i];
|
if (txBytes != null) totalBytes -= txBytes[i];
|
|
bucketStart[i] = entry.bucketStart;
|
setLong(activeTime, i, entry.activeTime);
|
setLong(rxBytes, i, entry.rxBytes);
|
setLong(rxPackets, i, entry.rxPackets);
|
setLong(txBytes, i, entry.txBytes);
|
setLong(txPackets, i, entry.txPackets);
|
setLong(operations, i, entry.operations);
|
|
// Apply new values
|
if (rxBytes != null) totalBytes += rxBytes[i];
|
if (txBytes != null) totalBytes += txBytes[i];
|
}
|
|
/**
|
* Record that data traffic occurred in the given time range. Will
|
* distribute across internal buckets, creating new buckets as needed.
|
*/
|
@Deprecated
|
public void recordData(long start, long end, long rxBytes, long txBytes) {
|
recordData(start, end, new NetworkStats.Entry(
|
IFACE_ALL, UID_ALL, SET_DEFAULT, TAG_NONE, rxBytes, 0L, txBytes, 0L, 0L));
|
}
|
|
/**
|
* Record that data traffic occurred in the given time range. Will
|
* distribute across internal buckets, creating new buckets as needed.
|
*/
|
public void recordData(long start, long end, NetworkStats.Entry entry) {
|
long rxBytes = entry.rxBytes;
|
long rxPackets = entry.rxPackets;
|
long txBytes = entry.txBytes;
|
long txPackets = entry.txPackets;
|
long operations = entry.operations;
|
|
if (entry.isNegative()) {
|
throw new IllegalArgumentException("tried recording negative data");
|
}
|
if (entry.isEmpty()) {
|
return;
|
}
|
|
// create any buckets needed by this range
|
ensureBuckets(start, end);
|
|
// distribute data usage into buckets
|
long duration = end - start;
|
final int startIndex = getIndexAfter(end);
|
for (int i = startIndex; i >= 0; i--) {
|
final long curStart = bucketStart[i];
|
final long curEnd = curStart + bucketDuration;
|
|
// bucket is older than record; we're finished
|
if (curEnd < start) break;
|
// bucket is newer than record; keep looking
|
if (curStart > end) continue;
|
|
final long overlap = Math.min(curEnd, end) - Math.max(curStart, start);
|
if (overlap <= 0) continue;
|
|
// integer math each time is faster than floating point
|
final long fracRxBytes = rxBytes * overlap / duration;
|
final long fracRxPackets = rxPackets * overlap / duration;
|
final long fracTxBytes = txBytes * overlap / duration;
|
final long fracTxPackets = txPackets * overlap / duration;
|
final long fracOperations = operations * overlap / duration;
|
|
addLong(activeTime, i, overlap);
|
addLong(this.rxBytes, i, fracRxBytes); rxBytes -= fracRxBytes;
|
addLong(this.rxPackets, i, fracRxPackets); rxPackets -= fracRxPackets;
|
addLong(this.txBytes, i, fracTxBytes); txBytes -= fracTxBytes;
|
addLong(this.txPackets, i, fracTxPackets); txPackets -= fracTxPackets;
|
addLong(this.operations, i, fracOperations); operations -= fracOperations;
|
|
duration -= overlap;
|
}
|
|
totalBytes += entry.rxBytes + entry.txBytes;
|
}
|
|
/**
|
* Record an entire {@link NetworkStatsHistory} into this history. Usually
|
* for combining together stats for external reporting.
|
*/
|
@UnsupportedAppUsage
|
public void recordEntireHistory(NetworkStatsHistory input) {
|
recordHistory(input, Long.MIN_VALUE, Long.MAX_VALUE);
|
}
|
|
/**
|
* Record given {@link NetworkStatsHistory} into this history, copying only
|
* buckets that atomically occur in the inclusive time range. Doesn't
|
* interpolate across partial buckets.
|
*/
|
public void recordHistory(NetworkStatsHistory input, long start, long end) {
|
final NetworkStats.Entry entry = new NetworkStats.Entry(
|
IFACE_ALL, UID_ALL, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0L);
|
for (int i = 0; i < input.bucketCount; i++) {
|
final long bucketStart = input.bucketStart[i];
|
final long bucketEnd = bucketStart + input.bucketDuration;
|
|
// skip when bucket is outside requested range
|
if (bucketStart < start || bucketEnd > end) continue;
|
|
entry.rxBytes = getLong(input.rxBytes, i, 0L);
|
entry.rxPackets = getLong(input.rxPackets, i, 0L);
|
entry.txBytes = getLong(input.txBytes, i, 0L);
|
entry.txPackets = getLong(input.txPackets, i, 0L);
|
entry.operations = getLong(input.operations, i, 0L);
|
|
recordData(bucketStart, bucketEnd, entry);
|
}
|
}
|
|
/**
|
* Ensure that buckets exist for given time range, creating as needed.
|
*/
|
private void ensureBuckets(long start, long end) {
|
// normalize incoming range to bucket boundaries
|
start -= start % bucketDuration;
|
end += (bucketDuration - (end % bucketDuration)) % bucketDuration;
|
|
for (long now = start; now < end; now += bucketDuration) {
|
// try finding existing bucket
|
final int index = Arrays.binarySearch(bucketStart, 0, bucketCount, now);
|
if (index < 0) {
|
// bucket missing, create and insert
|
insertBucket(~index, now);
|
}
|
}
|
}
|
|
/**
|
* Insert new bucket at requested index and starting time.
|
*/
|
private void insertBucket(int index, long start) {
|
// create more buckets when needed
|
if (bucketCount >= bucketStart.length) {
|
final int newLength = Math.max(bucketStart.length, 10) * 3 / 2;
|
bucketStart = Arrays.copyOf(bucketStart, newLength);
|
if (activeTime != null) activeTime = Arrays.copyOf(activeTime, newLength);
|
if (rxBytes != null) rxBytes = Arrays.copyOf(rxBytes, newLength);
|
if (rxPackets != null) rxPackets = Arrays.copyOf(rxPackets, newLength);
|
if (txBytes != null) txBytes = Arrays.copyOf(txBytes, newLength);
|
if (txPackets != null) txPackets = Arrays.copyOf(txPackets, newLength);
|
if (operations != null) operations = Arrays.copyOf(operations, newLength);
|
}
|
|
// create gap when inserting bucket in middle
|
if (index < bucketCount) {
|
final int dstPos = index + 1;
|
final int length = bucketCount - index;
|
|
System.arraycopy(bucketStart, index, bucketStart, dstPos, length);
|
if (activeTime != null) System.arraycopy(activeTime, index, activeTime, dstPos, length);
|
if (rxBytes != null) System.arraycopy(rxBytes, index, rxBytes, dstPos, length);
|
if (rxPackets != null) System.arraycopy(rxPackets, index, rxPackets, dstPos, length);
|
if (txBytes != null) System.arraycopy(txBytes, index, txBytes, dstPos, length);
|
if (txPackets != null) System.arraycopy(txPackets, index, txPackets, dstPos, length);
|
if (operations != null) System.arraycopy(operations, index, operations, dstPos, length);
|
}
|
|
bucketStart[index] = start;
|
setLong(activeTime, index, 0L);
|
setLong(rxBytes, index, 0L);
|
setLong(rxPackets, index, 0L);
|
setLong(txBytes, index, 0L);
|
setLong(txPackets, index, 0L);
|
setLong(operations, index, 0L);
|
bucketCount++;
|
}
|
|
/**
|
* Clear all data stored in this object.
|
*/
|
public void clear() {
|
bucketStart = EmptyArray.LONG;
|
if (activeTime != null) activeTime = EmptyArray.LONG;
|
if (rxBytes != null) rxBytes = EmptyArray.LONG;
|
if (rxPackets != null) rxPackets = EmptyArray.LONG;
|
if (txBytes != null) txBytes = EmptyArray.LONG;
|
if (txPackets != null) txPackets = EmptyArray.LONG;
|
if (operations != null) operations = EmptyArray.LONG;
|
bucketCount = 0;
|
totalBytes = 0;
|
}
|
|
/**
|
* Remove buckets older than requested cutoff.
|
*/
|
@Deprecated
|
public void removeBucketsBefore(long cutoff) {
|
int i;
|
for (i = 0; i < bucketCount; i++) {
|
final long curStart = bucketStart[i];
|
final long curEnd = curStart + bucketDuration;
|
|
// cutoff happens before or during this bucket; everything before
|
// this bucket should be removed.
|
if (curEnd > cutoff) break;
|
}
|
|
if (i > 0) {
|
final int length = bucketStart.length;
|
bucketStart = Arrays.copyOfRange(bucketStart, i, length);
|
if (activeTime != null) activeTime = Arrays.copyOfRange(activeTime, i, length);
|
if (rxBytes != null) rxBytes = Arrays.copyOfRange(rxBytes, i, length);
|
if (rxPackets != null) rxPackets = Arrays.copyOfRange(rxPackets, i, length);
|
if (txBytes != null) txBytes = Arrays.copyOfRange(txBytes, i, length);
|
if (txPackets != null) txPackets = Arrays.copyOfRange(txPackets, i, length);
|
if (operations != null) operations = Arrays.copyOfRange(operations, i, length);
|
bucketCount -= i;
|
|
// TODO: subtract removed values from totalBytes
|
}
|
}
|
|
/**
|
* Return interpolated data usage across the requested range. Interpolates
|
* across buckets, so values may be rounded slightly.
|
*/
|
@UnsupportedAppUsage
|
public Entry getValues(long start, long end, Entry recycle) {
|
return getValues(start, end, Long.MAX_VALUE, recycle);
|
}
|
|
/**
|
* Return interpolated data usage across the requested range. Interpolates
|
* across buckets, so values may be rounded slightly.
|
*/
|
@UnsupportedAppUsage
|
public Entry getValues(long start, long end, long now, Entry recycle) {
|
final Entry entry = recycle != null ? recycle : new Entry();
|
entry.bucketDuration = end - start;
|
entry.bucketStart = start;
|
entry.activeTime = activeTime != null ? 0 : UNKNOWN;
|
entry.rxBytes = rxBytes != null ? 0 : UNKNOWN;
|
entry.rxPackets = rxPackets != null ? 0 : UNKNOWN;
|
entry.txBytes = txBytes != null ? 0 : UNKNOWN;
|
entry.txPackets = txPackets != null ? 0 : UNKNOWN;
|
entry.operations = operations != null ? 0 : UNKNOWN;
|
|
final int startIndex = getIndexAfter(end);
|
for (int i = startIndex; i >= 0; i--) {
|
final long curStart = bucketStart[i];
|
final long curEnd = curStart + bucketDuration;
|
|
// bucket is older than request; we're finished
|
if (curEnd <= start) break;
|
// bucket is newer than request; keep looking
|
if (curStart >= end) continue;
|
|
// include full value for active buckets, otherwise only fractional
|
final boolean activeBucket = curStart < now && curEnd > now;
|
final long overlap;
|
if (activeBucket) {
|
overlap = bucketDuration;
|
} else {
|
final long overlapEnd = curEnd < end ? curEnd : end;
|
final long overlapStart = curStart > start ? curStart : start;
|
overlap = overlapEnd - overlapStart;
|
}
|
if (overlap <= 0) continue;
|
|
// integer math each time is faster than floating point
|
if (activeTime != null) entry.activeTime += activeTime[i] * overlap / bucketDuration;
|
if (rxBytes != null) entry.rxBytes += rxBytes[i] * overlap / bucketDuration;
|
if (rxPackets != null) entry.rxPackets += rxPackets[i] * overlap / bucketDuration;
|
if (txBytes != null) entry.txBytes += txBytes[i] * overlap / bucketDuration;
|
if (txPackets != null) entry.txPackets += txPackets[i] * overlap / bucketDuration;
|
if (operations != null) entry.operations += operations[i] * overlap / bucketDuration;
|
}
|
return entry;
|
}
|
|
/**
|
* @deprecated only for temporary testing
|
*/
|
@Deprecated
|
public void generateRandom(long start, long end, long bytes) {
|
final Random r = new Random();
|
|
final float fractionRx = r.nextFloat();
|
final long rxBytes = (long) (bytes * fractionRx);
|
final long txBytes = (long) (bytes * (1 - fractionRx));
|
|
final long rxPackets = rxBytes / 1024;
|
final long txPackets = txBytes / 1024;
|
final long operations = rxBytes / 2048;
|
|
generateRandom(start, end, rxBytes, rxPackets, txBytes, txPackets, operations, r);
|
}
|
|
/**
|
* @deprecated only for temporary testing
|
*/
|
@Deprecated
|
public void generateRandom(long start, long end, long rxBytes, long rxPackets, long txBytes,
|
long txPackets, long operations, Random r) {
|
ensureBuckets(start, end);
|
|
final NetworkStats.Entry entry = new NetworkStats.Entry(
|
IFACE_ALL, UID_ALL, SET_DEFAULT, TAG_NONE, 0L, 0L, 0L, 0L, 0L);
|
while (rxBytes > 1024 || rxPackets > 128 || txBytes > 1024 || txPackets > 128
|
|| operations > 32) {
|
final long curStart = randomLong(r, start, end);
|
final long curEnd = curStart + randomLong(r, 0, (end - curStart) / 2);
|
|
entry.rxBytes = randomLong(r, 0, rxBytes);
|
entry.rxPackets = randomLong(r, 0, rxPackets);
|
entry.txBytes = randomLong(r, 0, txBytes);
|
entry.txPackets = randomLong(r, 0, txPackets);
|
entry.operations = randomLong(r, 0, operations);
|
|
rxBytes -= entry.rxBytes;
|
rxPackets -= entry.rxPackets;
|
txBytes -= entry.txBytes;
|
txPackets -= entry.txPackets;
|
operations -= entry.operations;
|
|
recordData(curStart, curEnd, entry);
|
}
|
}
|
|
public static long randomLong(Random r, long start, long end) {
|
return (long) (start + (r.nextFloat() * (end - start)));
|
}
|
|
/**
|
* Quickly determine if this history intersects with given window.
|
*/
|
public boolean intersects(long start, long end) {
|
final long dataStart = getStart();
|
final long dataEnd = getEnd();
|
if (start >= dataStart && start <= dataEnd) return true;
|
if (end >= dataStart && end <= dataEnd) return true;
|
if (dataStart >= start && dataStart <= end) return true;
|
if (dataEnd >= start && dataEnd <= end) return true;
|
return false;
|
}
|
|
public void dump(IndentingPrintWriter pw, boolean fullHistory) {
|
pw.print("NetworkStatsHistory: bucketDuration=");
|
pw.println(bucketDuration / SECOND_IN_MILLIS);
|
pw.increaseIndent();
|
|
final int start = fullHistory ? 0 : Math.max(0, bucketCount - 32);
|
if (start > 0) {
|
pw.print("(omitting "); pw.print(start); pw.println(" buckets)");
|
}
|
|
for (int i = start; i < bucketCount; i++) {
|
pw.print("st="); pw.print(bucketStart[i] / SECOND_IN_MILLIS);
|
if (rxBytes != null) { pw.print(" rb="); pw.print(rxBytes[i]); }
|
if (rxPackets != null) { pw.print(" rp="); pw.print(rxPackets[i]); }
|
if (txBytes != null) { pw.print(" tb="); pw.print(txBytes[i]); }
|
if (txPackets != null) { pw.print(" tp="); pw.print(txPackets[i]); }
|
if (operations != null) { pw.print(" op="); pw.print(operations[i]); }
|
pw.println();
|
}
|
|
pw.decreaseIndent();
|
}
|
|
public void dumpCheckin(PrintWriter pw) {
|
pw.print("d,");
|
pw.print(bucketDuration / SECOND_IN_MILLIS);
|
pw.println();
|
|
for (int i = 0; i < bucketCount; i++) {
|
pw.print("b,");
|
pw.print(bucketStart[i] / SECOND_IN_MILLIS); pw.print(',');
|
if (rxBytes != null) { pw.print(rxBytes[i]); } else { pw.print("*"); } pw.print(',');
|
if (rxPackets != null) { pw.print(rxPackets[i]); } else { pw.print("*"); } pw.print(',');
|
if (txBytes != null) { pw.print(txBytes[i]); } else { pw.print("*"); } pw.print(',');
|
if (txPackets != null) { pw.print(txPackets[i]); } else { pw.print("*"); } pw.print(',');
|
if (operations != null) { pw.print(operations[i]); } else { pw.print("*"); }
|
pw.println();
|
}
|
}
|
|
public void writeToProto(ProtoOutputStream proto, long tag) {
|
final long start = proto.start(tag);
|
|
proto.write(NetworkStatsHistoryProto.BUCKET_DURATION_MS, bucketDuration);
|
|
for (int i = 0; i < bucketCount; i++) {
|
final long startBucket = proto.start(NetworkStatsHistoryProto.BUCKETS);
|
|
proto.write(NetworkStatsHistoryBucketProto.BUCKET_START_MS, bucketStart[i]);
|
writeToProto(proto, NetworkStatsHistoryBucketProto.RX_BYTES, rxBytes, i);
|
writeToProto(proto, NetworkStatsHistoryBucketProto.RX_PACKETS, rxPackets, i);
|
writeToProto(proto, NetworkStatsHistoryBucketProto.TX_BYTES, txBytes, i);
|
writeToProto(proto, NetworkStatsHistoryBucketProto.TX_PACKETS, txPackets, i);
|
writeToProto(proto, NetworkStatsHistoryBucketProto.OPERATIONS, operations, i);
|
|
proto.end(startBucket);
|
}
|
|
proto.end(start);
|
}
|
|
private static void writeToProto(ProtoOutputStream proto, long tag, long[] array, int index) {
|
if (array != null) {
|
proto.write(tag, array[index]);
|
}
|
}
|
|
@Override
|
public String toString() {
|
final CharArrayWriter writer = new CharArrayWriter();
|
dump(new IndentingPrintWriter(writer, " "), false);
|
return writer.toString();
|
}
|
|
@UnsupportedAppUsage
|
public static final @android.annotation.NonNull Creator<NetworkStatsHistory> CREATOR = new Creator<NetworkStatsHistory>() {
|
@Override
|
public NetworkStatsHistory createFromParcel(Parcel in) {
|
return new NetworkStatsHistory(in);
|
}
|
|
@Override
|
public NetworkStatsHistory[] newArray(int size) {
|
return new NetworkStatsHistory[size];
|
}
|
};
|
|
private static long getLong(long[] array, int i, long value) {
|
return array != null ? array[i] : value;
|
}
|
|
private static void setLong(long[] array, int i, long value) {
|
if (array != null) array[i] = value;
|
}
|
|
private static void addLong(long[] array, int i, long value) {
|
if (array != null) array[i] += value;
|
}
|
|
public int estimateResizeBuckets(long newBucketDuration) {
|
return (int) (size() * getBucketDuration() / newBucketDuration);
|
}
|
|
/**
|
* Utility methods for interacting with {@link DataInputStream} and
|
* {@link DataOutputStream}, mostly dealing with writing partial arrays.
|
*/
|
public static class DataStreamUtils {
|
@Deprecated
|
public static long[] readFullLongArray(DataInputStream in) throws IOException {
|
final int size = in.readInt();
|
if (size < 0) throw new ProtocolException("negative array size");
|
final long[] values = new long[size];
|
for (int i = 0; i < values.length; i++) {
|
values[i] = in.readLong();
|
}
|
return values;
|
}
|
|
/**
|
* Read variable-length {@link Long} using protobuf-style approach.
|
*/
|
public static long readVarLong(DataInputStream in) throws IOException {
|
int shift = 0;
|
long result = 0;
|
while (shift < 64) {
|
byte b = in.readByte();
|
result |= (long) (b & 0x7F) << shift;
|
if ((b & 0x80) == 0)
|
return result;
|
shift += 7;
|
}
|
throw new ProtocolException("malformed long");
|
}
|
|
/**
|
* Write variable-length {@link Long} using protobuf-style approach.
|
*/
|
public static void writeVarLong(DataOutputStream out, long value) throws IOException {
|
while (true) {
|
if ((value & ~0x7FL) == 0) {
|
out.writeByte((int) value);
|
return;
|
} else {
|
out.writeByte(((int) value & 0x7F) | 0x80);
|
value >>>= 7;
|
}
|
}
|
}
|
|
public static long[] readVarLongArray(DataInputStream in) throws IOException {
|
final int size = in.readInt();
|
if (size == -1) return null;
|
if (size < 0) throw new ProtocolException("negative array size");
|
final long[] values = new long[size];
|
for (int i = 0; i < values.length; i++) {
|
values[i] = readVarLong(in);
|
}
|
return values;
|
}
|
|
public static void writeVarLongArray(DataOutputStream out, long[] values, int size)
|
throws IOException {
|
if (values == null) {
|
out.writeInt(-1);
|
return;
|
}
|
if (size > values.length) {
|
throw new IllegalArgumentException("size larger than length");
|
}
|
out.writeInt(size);
|
for (int i = 0; i < size; i++) {
|
writeVarLong(out, values[i]);
|
}
|
}
|
}
|
|
/**
|
* Utility methods for interacting with {@link Parcel} structures, mostly
|
* dealing with writing partial arrays.
|
*/
|
public static class ParcelUtils {
|
public static long[] readLongArray(Parcel in) {
|
final int size = in.readInt();
|
if (size == -1) return null;
|
final long[] values = new long[size];
|
for (int i = 0; i < values.length; i++) {
|
values[i] = in.readLong();
|
}
|
return values;
|
}
|
|
public static void writeLongArray(Parcel out, long[] values, int size) {
|
if (values == null) {
|
out.writeInt(-1);
|
return;
|
}
|
if (size > values.length) {
|
throw new IllegalArgumentException("size larger than length");
|
}
|
out.writeInt(size);
|
for (int i = 0; i < size; i++) {
|
out.writeLong(values[i]);
|
}
|
}
|
}
|
|
}
|
