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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package android.car.storagemonitoring;
     17 
     18 import android.annotation.SystemApi;
     19 import android.os.Parcel;
     20 import android.os.Parcelable;
     21 import android.util.JsonWriter;
     22 import java.io.IOException;
     23 import java.util.Objects;
     24 import org.json.JSONException;
     25 import org.json.JSONObject;
     26 
     27 /**
     28  * Information about how many bytes were written to a filesystem during its lifetime.
     29  *
     30  * @hide
     31  */
     32 @SystemApi
     33 public class LifetimeWriteInfo implements Parcelable {
     34     public static final Creator<IoStats> CREATOR = new Creator<IoStats>() {
     35         @Override
     36         public IoStats createFromParcel(Parcel in) {
     37             return new IoStats(in);
     38         }
     39 
     40         @Override
     41         public IoStats[] newArray(int size) {
     42             return new IoStats[size];
     43         }
     44     };
     45 
     46     public final String partition;
     47     public final String fstype;
     48     public final long writtenBytes;
     49 
     50     public LifetimeWriteInfo(String partition, String fstype, long writtenBytes) {
     51         this.partition = Objects.requireNonNull(partition);
     52         this.fstype = Objects.requireNonNull(fstype);
     53         if (writtenBytes < 0) {
     54             throw new IllegalArgumentException("writtenBytes must be non-negative");
     55         }
     56         this.writtenBytes = writtenBytes;
     57     }
     58 
     59     public LifetimeWriteInfo(Parcel in) {
     60         this.partition = in.readString();
     61         this.fstype = in.readString();
     62         this.writtenBytes = in.readLong();
     63     }
     64 
     65     public LifetimeWriteInfo(JSONObject in) throws JSONException {
     66         partition = in.getString("partition");
     67         fstype = in.getString("fstype");
     68         writtenBytes = in.getLong("writtenBytes");
     69     }
     70 
     71 
     72     @Override
     73     public void writeToParcel(Parcel dest, int flags) {
     74         dest.writeString(partition);
     75         dest.writeString(fstype);
     76         dest.writeLong(writtenBytes);
     77     }
     78 
     79     public void writeToJson(JsonWriter jsonWriter) throws IOException {
     80         jsonWriter.beginObject();
     81         jsonWriter.name("partition").value(partition);
     82         jsonWriter.name("fstype").value(fstype);
     83         jsonWriter.name("writtenBytes").value(writtenBytes);
     84         jsonWriter.endObject();
     85     }
     86 
     87 
     88     @Override
     89     public int describeContents() {
     90         return 0;
     91     }
     92 
     93     @Override
     94     public boolean equals(Object other) {
     95         if (other instanceof LifetimeWriteInfo) {
     96             LifetimeWriteInfo lifetime = (LifetimeWriteInfo)other;
     97             return partition.equals(lifetime.partition) &&
     98                     fstype.equals(lifetime.fstype) &&
     99                     writtenBytes == lifetime.writtenBytes;
    100         }
    101 
    102         return false;
    103     }
    104 
    105     @Override
    106     public String toString() {
    107         return String.format("for partition %s of type %s, %d bytes were written",
    108                 partition, fstype, writtenBytes);
    109     }
    110 }
    111