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      1 # This script parses the logcat lines produced by the Tuning Fork DebugBackend
      2 #  which are base64 encoded serializations of TuningForkLogEvent protos.
      3 # Usage:
      4 #  adb logcat -d | python parselogcat.py
      5 
      6 import sys
      7 import re
      8 
      9 # To generate python files from the proto files:
     10 # export TF_PROTO_DIR=../../src/tuningfork/proto/
     11 # protoc --python_out=. -I$TF_PROTO_DIR $TF_PROTO_DIR/tuningfork.proto
     12 # protoc --python_out=. -I$TF_PROTO_DIR $TF_PROTO_DIR/tuningfork_clearcut_log.proto
     13 # export TF_DEV_PROTO_DIR=<somewhere>
     14 # protoc --python_out=. -I$TF_DEV_PROTO_DIR $TF_DEV_PROTO_DIR/dev_tuningfork.proto
     15 
     16 # 'pip install protobuf' if you get a 'No module named protobuf' error
     17 
     18 import tuningfork_clearcut_log_pb2 as tcl
     19 import dev_tuningfork_pb2 as tf
     20 
     21 # Example logcat line:
     22 #11-30 15:32:22.892 13781 16553 I TuningFork.Clearcut: (TCL1/1)GgAqHAgAEgAaFgAAAAAAAAAAAAAAAAAAAAAAAAAAAEg=
     23 tflogcat_regex = r"(\S+ \S+).*TuningFork.*\(TCL(.+)/(.+)\)(.*)"
     24 
     25 def flatten(s):
     26   return ', '.join(s.strip().split('\n'))
     27 
     28 def prettyPrint(tclevent):
     29   fp =tf.FidelityParams()
     30   fp.ParseFromString(tclevent.fidelityparams)
     31   print "fidelityparams: ", flatten(str(fp))
     32   for h in tclevent.histograms:
     33     print "histograms {"
     34     print "  instrument_id: ", h.instrument_id
     35     a = tf.Annotation()
     36     a.ParseFromString(h.annotation)
     37     print "  annotation: ", flatten(str(a))
     38     for c in h.counts:
     39       print "  counts: ", c
     40     print "}"
     41 
     42 ser = ""
     43 def getTCLEvent(i, n, ser_in):
     44   global ser
     45   if i==1:
     46     ser = ""
     47   ser += ser_in
     48   if i<>n:
     49     return
     50   l = tcl.TuningForkLogEvent()
     51   l.ParseFromString(ser.decode("base64"))
     52   return l
     53 
     54 def readStdin():
     55   for logcat_lines in sys.stdin.readlines():
     56     m = re.match(tflogcat_regex, logcat_lines)
     57     if m:
     58       subparts = m.groups()
     59       tstamp = subparts[0]
     60       tclevent = getTCLEvent(int(subparts[1]),int(subparts[2]),subparts[3])
     61       if tclevent:
     62         prettyPrint(tclevent)
     63 
     64 def main():
     65   readStdin()
     66 
     67 if __name__ == "__main__":
     68   main()
     69