Pivot network statistics to use DataInput/Output.
Using these generalized interfaces is more flexible, since it enables
us to pivot the implementation being used internally. In particular,
an upcoming CL will pivot them to use a more efficient alternative.
This is a no-op refactoring.
Bug: 176777285
Test: atest FrameworksNetTests CtsNetTestCases
Change-Id: Ibd4717174cf1f136e9d5d80172ecb6e493265306
diff --git a/core/java/android/net/NetworkStatsHistory.java b/core/java/android/net/NetworkStatsHistory.java
index bf25602..f413063 100644
--- a/core/java/android/net/NetworkStatsHistory.java
+++ b/core/java/android/net/NetworkStatsHistory.java
@@ -45,8 +45,8 @@
import libcore.util.EmptyArray;
import java.io.CharArrayWriter;
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
+import java.io.DataInput;
+import java.io.DataOutput;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.ProtocolException;
@@ -162,7 +162,7 @@
out.writeLong(totalBytes);
}
- public NetworkStatsHistory(DataInputStream in) throws IOException {
+ public NetworkStatsHistory(DataInput in) throws IOException {
final int version = in.readInt();
switch (version) {
case VERSION_INIT: {
@@ -204,7 +204,7 @@
}
}
- public void writeToStream(DataOutputStream out) throws IOException {
+ public void writeToStream(DataOutput out) throws IOException {
out.writeInt(VERSION_ADD_ACTIVE);
out.writeLong(bucketDuration);
writeVarLongArray(out, bucketStart, bucketCount);
@@ -768,7 +768,7 @@
*/
public static class DataStreamUtils {
@Deprecated
- public static long[] readFullLongArray(DataInputStream in) throws IOException {
+ public static long[] readFullLongArray(DataInput in) throws IOException {
final int size = in.readInt();
if (size < 0) throw new ProtocolException("negative array size");
final long[] values = new long[size];
@@ -781,7 +781,7 @@
/**
* Read variable-length {@link Long} using protobuf-style approach.
*/
- public static long readVarLong(DataInputStream in) throws IOException {
+ public static long readVarLong(DataInput in) throws IOException {
int shift = 0;
long result = 0;
while (shift < 64) {
@@ -797,7 +797,7 @@
/**
* Write variable-length {@link Long} using protobuf-style approach.
*/
- public static void writeVarLong(DataOutputStream out, long value) throws IOException {
+ public static void writeVarLong(DataOutput out, long value) throws IOException {
while (true) {
if ((value & ~0x7FL) == 0) {
out.writeByte((int) value);
@@ -809,7 +809,7 @@
}
}
- public static long[] readVarLongArray(DataInputStream in) throws IOException {
+ public static long[] readVarLongArray(DataInput in) throws IOException {
final int size = in.readInt();
if (size == -1) return null;
if (size < 0) throw new ProtocolException("negative array size");
@@ -820,7 +820,7 @@
return values;
}
- public static void writeVarLongArray(DataOutputStream out, long[] values, int size)
+ public static void writeVarLongArray(DataOutput out, long[] values, int size)
throws IOException {
if (values == null) {
out.writeInt(-1);
diff --git a/services/core/java/com/android/server/net/NetworkIdentitySet.java b/services/core/java/com/android/server/net/NetworkIdentitySet.java
index 2326ad3..bce8069 100644
--- a/services/core/java/com/android/server/net/NetworkIdentitySet.java
+++ b/services/core/java/com/android/server/net/NetworkIdentitySet.java
@@ -20,8 +20,8 @@
import android.service.NetworkIdentitySetProto;
import android.util.proto.ProtoOutputStream;
-import java.io.DataInputStream;
-import java.io.DataOutputStream;
+import java.io.DataInput;
+import java.io.DataOutput;
import java.io.IOException;
import java.util.HashSet;
@@ -44,7 +44,7 @@
public NetworkIdentitySet() {
}
- public NetworkIdentitySet(DataInputStream in) throws IOException {
+ public NetworkIdentitySet(DataInput in) throws IOException {
final int version = in.readInt();
final int size = in.readInt();
for (int i = 0; i < size; i++) {
@@ -89,7 +89,7 @@
}
}
- public void writeToStream(DataOutputStream out) throws IOException {
+ public void writeToStream(DataOutput out) throws IOException {
out.writeInt(VERSION_ADD_DEFAULT_NETWORK);
out.writeInt(size());
for (NetworkIdentity ident : this) {
@@ -143,7 +143,7 @@
return true;
}
- private static void writeOptionalString(DataOutputStream out, String value) throws IOException {
+ private static void writeOptionalString(DataOutput out, String value) throws IOException {
if (value != null) {
out.writeByte(1);
out.writeUTF(value);
@@ -152,7 +152,7 @@
}
}
- private static String readOptionalString(DataInputStream in) throws IOException {
+ private static String readOptionalString(DataInput in) throws IOException {
if (in.readByte() != 0) {
return in.readUTF();
} else {
diff --git a/services/core/java/com/android/server/net/NetworkStatsCollection.java b/services/core/java/com/android/server/net/NetworkStatsCollection.java
index c4beddd..6aefe41 100644
--- a/services/core/java/com/android/server/net/NetworkStatsCollection.java
+++ b/services/core/java/com/android/server/net/NetworkStatsCollection.java
@@ -63,12 +63,15 @@
import com.google.android.collect.Maps;
import java.io.BufferedInputStream;
+import java.io.DataInput;
import java.io.DataInputStream;
+import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
+import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ProtocolException;
import java.time.ZonedDateTime;
@@ -82,7 +85,7 @@
* Collection of {@link NetworkStatsHistory}, stored based on combined key of
* {@link NetworkIdentitySet}, UID, set, and tag. Knows how to persist itself.
*/
-public class NetworkStatsCollection implements FileRotator.Reader {
+public class NetworkStatsCollection implements FileRotator.Reader, FileRotator.Writer {
/** File header magic number: "ANET" */
private static final int FILE_MAGIC = 0x414E4554;
@@ -431,10 +434,10 @@
@Override
public void read(InputStream in) throws IOException {
- read(new DataInputStream(in));
+ read((DataInput) new DataInputStream(in));
}
- public void read(DataInputStream in) throws IOException {
+ private void read(DataInput in) throws IOException {
// verify file magic header intact
final int magic = in.readInt();
if (magic != FILE_MAGIC) {
@@ -468,7 +471,13 @@
}
}
- public void write(DataOutputStream out) throws IOException {
+ @Override
+ public void write(OutputStream out) throws IOException {
+ write((DataOutput) new DataOutputStream(out));
+ out.flush();
+ }
+
+ private void write(DataOutput out) throws IOException {
// cluster key lists grouped by ident
final HashMap<NetworkIdentitySet, ArrayList<Key>> keysByIdent = Maps.newHashMap();
for (Key key : mStats.keySet()) {
@@ -497,8 +506,6 @@
history.writeToStream(out);
}
}
-
- out.flush();
}
@Deprecated
diff --git a/services/core/java/com/android/server/net/NetworkStatsRecorder.java b/services/core/java/com/android/server/net/NetworkStatsRecorder.java
index ce74169..978ae87 100644
--- a/services/core/java/com/android/server/net/NetworkStatsRecorder.java
+++ b/services/core/java/com/android/server/net/NetworkStatsRecorder.java
@@ -42,7 +42,6 @@
import libcore.io.IoUtils;
import java.io.ByteArrayOutputStream;
-import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
@@ -375,7 +374,7 @@
@Override
public void write(OutputStream out) throws IOException {
- mCollection.write(new DataOutputStream(out));
+ mCollection.write(out);
mCollection.reset();
}
}
@@ -412,7 +411,7 @@
@Override
public void write(OutputStream out) throws IOException {
- mTemp.write(new DataOutputStream(out));
+ mTemp.write(out);
}
}