= PROGRAM =
parser.py

= DESCRIPTION =
parser.py in a python program that is used by each benchmark test to
parse the test log for a test run, check the threshold(s) for success or
failure, and store the data used to generate plots.

Each benchmark should include an executable file called 'parser.py'
in the test directory (/fuego-core/engine/tests/Benchmark.<testname>).

The test log for the current run is parsed by this routine, and one or more metrics are extracted (using regular expressions).

== input files ==
The file used to specify the threshold and comparison operator for each
metric is called '''reference.log'''.  The metric names for the benchmark
are stored in a file called '''metrics.json'''.  

== output files ==
The output data is placed in a file called '''plot.data''', and a plot image
is created in the file '''plot.png'''.

== outline ==
The program has the following rough outline:
 * import the parser library
 * specify a search pattern for finding one or more metrics from the test log
 * call the parse() function
 * build a dictionary of metric values
 * call the process_data function

== metric names ==
The parser.py program provides the name for the metric(s) read from the
benchmark test log file.  It also provide a value for each metric, and
passes the parsed data value for each metric to the processing routine.

This metric name must be consistent in the tests.info file, and the
reference.log file.

= SAMPLES =
Here is a sample parser.py that does simple processing of a single
metric.  This is for Benchmark.GLMark

{{{#!YellowBox
#!/bin/python
# See common.py for description of command-line arguments

import os, re, sys

sys.path.insert(0, os.environ['FUEGO_CORE'] + '/engine/scripts/parser')
import common as plib

ref_section_pat = "\[[\w]+.[gle]{2}\]"
cur_search_pat = re.compile("^(Your GLMark08 Score is )([\d]{1,3})",re.MULTILINE)

cur_dict = {}
pat_result = plib.parse(cur_search_pat)
if pat_result:
        cur_dict["GLMark_Score"] = pat_result[0][1]

sys.exit(plib.process_data(ref_section_pat, cur_dict, 's', 'FPS'))
}}}


= ENVIRONMENT and ARGUMENTS =
parser.py takes takes positional arguments on its command line.
 * $JOB_NAME
 * $PLATFORM
 * $BUILD_ID
 * $BUILD_NUMBER
 * $FW
 * $PLATFORM
 * $NODE_NAME

parser.py is called with the following invocation, from [[function_bench_processing|bench_processing]]:

{{{#!YellowBox
  run_python $PYTHON_ARGS $FUEGO_CORE/$engine/tests/$TESTDIR/parser.py $JOB_NAME $PLATFORM $BUILD_ID $BUILD_NUMBER $FW $PLATFORM $NODE_NAME
}}}



= SOURCE =
Located in ''/home/fuego/tests/<testname>/parser.py'', which is the same as ''engine/tests/<testname>/parser.py''.


= SEE ALSO =
 * [[dataload.py]], [[function_bench_processing|bench_processing]], [[Parser module API]], [[Benchmark_parser_notes]]