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Commit c1ff246f authored by Tianjie Xu's avatar Tianjie Xu
Browse files

Collect statistics of source build version 

Parse the last_install and report the source build version of an ota
update.
Related CL in: ag/1121141

Bug: 28658632
Change-Id: I5e835c144aabe97fda681f60397ebf4416f7bd4f
parent fe089e3d

core/java/android/os/RecoverySystem.java

+6 −0
Original line number Diff line number Diff line
@@ -695,6 +695,7 @@ public class RecoverySystem { 
            String line = null;

            int bytesWrittenInMiB = -1, bytesStashedInMiB = -1;

            int timeTotal = -1;

            int sourceVersion = -1;

            while ((line = in.readLine()) != null) {

                // Here is an example of lines in last_install:

                // ...
@@ -729,6 +730,8 @@ public class RecoverySystem { 


                if (line.startsWith("time")) {

                    timeTotal = scaled;

                } else if (line.startsWith("source_version")) {

                    sourceVersion = scaled;

                } else if (line.startsWith("bytes_written")) {

                    bytesWrittenInMiB = (bytesWrittenInMiB == -1) ? scaled :

                            bytesWrittenInMiB + scaled;
@@ -742,6 +745,9 @@ public class RecoverySystem { 
            if (timeTotal != -1) {

                MetricsLogger.histogram(context, "ota_time_total", timeTotal);

            }

            if (sourceVersion != -1) {

                MetricsLogger.histogram(context, "ota_source_version", sourceVersion);

            }

            if (bytesWrittenInMiB != -1) {

                MetricsLogger.histogram(context, "ota_written_in_MiBs", bytesWrittenInMiB);

            }