Android/frameworks_base
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Create @StringDef for the PREFIX_* values

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Bug: 222291489
Test: build, FrameworksNetTests
Change-Id: If54bed41e96a1b1ef169d89a0caa9e4300578374
This commit is contained in:
Aaron Huang
2022-03-14 10:50:13 +08:00
parent 0f839e536d
commit 2438554348
1 changed files with 15 additions and 3 deletions
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18
core/java/android/net/netstats/NetworkStatsDataMigrationUtils.java
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@@ -27,6 +27,7 @@ import static android.net.NetworkStats.TAG_NONE;
import static android.telephony.SubscriptionManager.INVALID_SUBSCRIPTION_ID;
import android.annotation.NonNull;
import android.annotation.StringDef;
import android.annotation.SystemApi;
import android.net.NetworkIdentity;
import android.net.NetworkStatsCollection;
@@ -47,6 +48,8 @@ import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.net.ProtocolException;
import java.util.ArrayList;
import java.util.HashMap;
@@ -76,6 +79,15 @@ public class NetworkStatsDataMigrationUtils {
*/
public static final String PREFIX_UID_TAG = "uid_tag";
/** @hide */
@StringDef(prefix = {"PREFIX_"}, value = {
PREFIX_XT,
PREFIX_UID,
PREFIX_UID_TAG,
})
@Retention(RetentionPolicy.SOURCE)
public @interface Prefix {}
private static final HashMap<String, String> sPrefixLegacyFileNameMap =
new HashMap<String, String>() {{
put(PREFIX_XT, "netstats_xt.bin");
@@ -141,13 +153,13 @@ public class NetworkStatsDataMigrationUtils {
// Get /data/system/netstats_*.bin legacy files. Does not check for existence.
@NonNull
private static File getLegacyBinFileForPrefix(@NonNull String prefix) {
private static File getLegacyBinFileForPrefix(@NonNull @Prefix String prefix) {
return new File(getPlatformSystemDir(), sPrefixLegacyFileNameMap.get(prefix));
}
// List /data/system/netstats/[xt|uid|uid_tag].<start>-<end> legacy files.
@NonNull
private static ArrayList<File> getPlatformFileListForPrefix(@NonNull String prefix) {
private static ArrayList<File> getPlatformFileListForPrefix(@NonNull @Prefix String prefix) {
final ArrayList<File> list = new ArrayList<>();
final File platformFiles = new File(getPlatformBaseDir(), "netstats");
if (platformFiles.exists()) {
@@ -207,7 +219,7 @@ public class NetworkStatsDataMigrationUtils {
*/
@NonNull
public static NetworkStatsCollection readPlatformCollection(
@NonNull String prefix, long bucketDuration) throws IOException {
@NonNull @Prefix String prefix, long bucketDuration) throws IOException {
final NetworkStatsCollection.Builder builder =
new NetworkStatsCollection.Builder(bucketDuration);