Allow statsd_testdrive to work in root

LocalDrive needs to handle the situation whereby the caller does 'adb
root' in between calls, and therefore runs everything as shell.

TestDrive is a single-call, so it can just run as the caller. That's
what it used to do, but a recent refactoring made some of its calls via
shell, causes an error. This fixes that.

Test: manual confirmation that it worked for both shell and root
Change-Id: I5e31cdd59d61290a480cb6fae107170616daabc0

cmds/statsd/tools/localtools/src/com/android/statsd/shelltools/Utils.java

@@ -70,9 +70,16 @@ public class Utils {
     /**
      * Dumps the report from the device and converts it to a ConfigMetricsReportList.
      * Erases the data if clearData is true.
+     * @param configId id of the config
+     * @param clearData whether to erase the report data from statsd after getting the report.
+     * @param useShellUid Pulls data for the {@link SHELL_UID} instead of the caller's uid.
+     * @param logger Logger to log error messages
+     * @return
+     * @throws IOException
+     * @throws InterruptedException
      */
     public static ConfigMetricsReportList getReportList(long configId, boolean clearData,
-            Logger logger) throws IOException, InterruptedException {
+            boolean useShellUid, Logger logger) throws IOException, InterruptedException {
         try {
             File outputFile = File.createTempFile("statsdret", ".bin");
             outputFile.deleteOnExit();
@@ -82,7 +89,7 @@ public class Utils {
                     "adb",
                     "shell",
                     CMD_DUMP_REPORT,
-                    SHELL_UID,
+                    useShellUid ? SHELL_UID : "",
                     String.valueOf(configId),
                     clearData ? "" : "--keep_data",
                     "--include_current_bucket",
@@ -93,8 +100,8 @@ public class Utils {
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
             logger.severe("Failed to fetch and parse the statsd output report. "
                             + "Perhaps there is not a valid statsd config for the requested "
-                            + "uid=" + SHELL_UID
-                            + ", configId=" + configId
+                            + (useShellUid ? ("uid=" + SHELL_UID + ", ") : "")
+                            + "configId=" + configId
                             + ".");
             throw (e);
         }

cmds/statsd/tools/localtools/src/com/android/statsd/shelltools/localdrive/LocalDrive.java

@@ -165,7 +165,7 @@ public class LocalDrive {
             try {
                 Utils.runCommand(null, sLogger, "adb", "shell", Utils.CMD_REMOVE_CONFIG,
                         Utils.SHELL_UID, String.valueOf(configId));
-                Utils.getReportList(configId, true /* clearData */, sLogger);
+                Utils.getReportList(configId, true /* clearData */, true /* SHELL_UID */, sLogger);
             } catch (InterruptedException | IOException e) {
                 sLogger.severe("Failed to remove config: " + e.getMessage());
                 return false;
@@ -234,7 +234,7 @@ public class LocalDrive {
         // Even if the args request no modifications, we still parse it to make sure it's valid.
         ConfigMetricsReportList reportList;
         try {
-            reportList = Utils.getReportList(configId, clearData, sLogger);
+            reportList = Utils.getReportList(configId, clearData, true /* SHELL_UID */, sLogger);
         } catch (IOException | InterruptedException e) {
             sLogger.severe("Failed to get report list: " + e.getMessage());
             return false;
@@ -278,7 +278,7 @@ public class LocalDrive {
         sLogger.fine(String.format("cmdClear with %d", configId));
 
         try {
-            Utils.getReportList(configId, true /* clearData */, sLogger);
+            Utils.getReportList(configId, true /* clearData */, true /* SHELL_UID */, sLogger);
         } catch (IOException | InterruptedException e) {
             sLogger.severe("Failed to get report list: " + e.getMessage());
             return false;

cmds/statsd/tools/localtools/src/com/android/statsd/shelltools/testdrive/TestDrive.java

@@ -165,7 +165,7 @@ public class TestDrive {
     }
 
     private void dumpMetrics() throws Exception {
-        ConfigMetricsReportList reportList = Utils.getReportList(CONFIG_ID, true, logger);
+        ConfigMetricsReportList reportList = Utils.getReportList(CONFIG_ID, true, false, logger);
         // We may get multiple reports. Take the last one.
         ConfigMetricsReport report = reportList.getReports(reportList.getReportsCount() - 1);
         // Really should be only one metric.