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/*
* Copyright (C) 2017 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.os;
import android.util.Slog;
import java.util.ArrayList;
import java.util.List;
/**
* Wrapper class for sending data from Android OS to StatsD.
*
* @hide
*/
public final class StatsLogEventWrapper implements Parcelable {
static final boolean DEBUG = false;
static final String TAG = "StatsLogEventWrapper";
// Keep in sync with FieldValue.h enums
private static final int EVENT_TYPE_UNKNOWN = 0;
private static final int EVENT_TYPE_INT = 1; /* int32_t */
private static final int EVENT_TYPE_LONG = 2; /* int64_t */
private static final int EVENT_TYPE_FLOAT = 3;
private static final int EVENT_TYPE_DOUBLE = 4;
private static final int EVENT_TYPE_STRING = 5;
private static final int EVENT_TYPE_STORAGE = 6;
List<Integer> mTypes = new ArrayList<>();
List<Object> mValues = new ArrayList<>();
int mTag;
long mElapsedTimeNs;
long mWallClockTimeNs;
public StatsLogEventWrapper(int tag, long elapsedTimeNs, long wallClockTimeNs) {
this.mTag = tag;
this.mElapsedTimeNs = elapsedTimeNs;
this.mWallClockTimeNs = wallClockTimeNs;
}
/**
* Boilerplate for Parcel.
*/
public static final Parcelable.Creator<StatsLogEventWrapper> CREATOR = new
Parcelable.Creator<StatsLogEventWrapper>() {
public StatsLogEventWrapper createFromParcel(Parcel in) {
android.util.EventLog.writeEvent(0x534e4554, "112550251",
android.os.Binder.getCallingUid(), "");
// Purposefully leaving this method not implemented.
throw new RuntimeException("Not implemented");
}
public StatsLogEventWrapper[] newArray(int size) {
android.util.EventLog.writeEvent(0x534e4554, "112550251",
android.os.Binder.getCallingUid(), "");
// Purposefully leaving this method not implemented.
throw new RuntimeException("Not implemented");
}
};
/**
* Write a int value.
*/
public void writeInt(int val) {
mTypes.add(EVENT_TYPE_INT);
mValues.add(val);
}
/**
* Write a long value.
*/
public void writeLong(long val) {
mTypes.add(EVENT_TYPE_LONG);
mValues.add(val);
}
/**
* Write a string value.
*/
public void writeString(String val) {
mTypes.add(EVENT_TYPE_STRING);
// use empty string for null
mValues.add(val == null ? "" : val);
}
/**
* Write a float value.
*/
public void writeFloat(float val) {
mTypes.add(EVENT_TYPE_FLOAT);
mValues.add(val);
}
/**
* Write a storage value.
*/
public void writeStorage(byte[] val) {
mTypes.add(EVENT_TYPE_STORAGE);
mValues.add(val);
}
/**
* Write a boolean value.
*/
public void writeBoolean(boolean val) {
mTypes.add(EVENT_TYPE_INT);
mValues.add(val ? 1 : 0);
}
/**
* Writes the stored fields to a byte array. Will first write a new-line character to denote
* END_LIST before writing contents to byte array.
*/
public void writeToParcel(Parcel out, int flags) {
if (DEBUG) {
Slog.d(TAG,
"Writing " + mTag + " " + mElapsedTimeNs + " " + mWallClockTimeNs + " and "
+ mTypes.size() + " elements.");
}
out.writeInt(mTag);
out.writeLong(mElapsedTimeNs);
out.writeLong(mWallClockTimeNs);
out.writeInt(mTypes.size());
for (int i = 0; i < mTypes.size(); i++) {
out.writeInt(mTypes.get(i));
switch (mTypes.get(i)) {
case EVENT_TYPE_INT:
out.writeInt((int) mValues.get(i));
break;
case EVENT_TYPE_LONG:
out.writeLong((long) mValues.get(i));
break;
case EVENT_TYPE_FLOAT:
out.writeFloat((float) mValues.get(i));
break;
case EVENT_TYPE_DOUBLE:
out.writeDouble((double) mValues.get(i));
break;
case EVENT_TYPE_STRING:
out.writeString((String) mValues.get(i));
break;
case EVENT_TYPE_STORAGE:
out.writeByteArray((byte[]) mValues.get(i));
break;
default:
break;
}
}
}
/**
* Boilerplate for Parcel.
*/
public int describeContents() {
return 0;
}
}
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