#!/usr/bin/python3

# Copyright (C) 2014-2018 Free Software Foundation, Inc.

# This file is part of the GNU C Library.

#

# The GNU C Library is free software; you can redistribute it and/or

# modify it under the terms of the GNU Lesser General Public

# License as published by the Free Software Foundation; either

# version 2.1 of the License, or (at your option) any later version.

#

# The GNU C Library is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

# Lesser General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public

# License along with the GNU C Library; if not, see

# <http://www.gnu.org/licenses/>.

"""Benchmark output validator

Given a benchmark output file in json format and a benchmark schema file,

validate the output against the schema.

"""

from __future__ import print_function

import json

import sys

import os

try:

    import import_bench as bench

except ImportError:

    print('Import Error: Output will not be validated.')

    # Return success because we don't want the bench target to fail just

    # because the jsonschema module was not found.

    sys.exit(os.EX_OK)

def print_and_exit(message, exitcode):

    """Prints message to stderr and returns the exit code.

    Args:

        message: The message to print

        exitcode: The exit code to return

    Returns:

        The passed exit code

    """

    print(message, file=sys.stderr)

    return exitcode

def main(args):

    """Main entry point

    Args:

        args: The command line arguments to the program

    Returns:

        0 on success or a non-zero failure code

    Exceptions:

        Exceptions thrown by validate_bench

    """

    if len(args) != 2:

        return print_and_exit("Usage: %s <bench.out file> <bench.out schema>"

                % sys.argv[0], os.EX_USAGE)

    try:

        bench.parse_bench(args[0], args[1])

    except IOError as e:

        return print_and_exit("IOError(%d): %s" % (e.errno, e.strerror),

                os.EX_OSFILE)

    except bench.validator.ValidationError as e:

        return print_and_exit("Invalid benchmark output: %s" % e.message,

            os.EX_DATAERR)

    except bench.validator.SchemaError as e:

        return print_and_exit("Invalid schema: %s" % e.message, os.EX_DATAERR)

    print("Benchmark output in %s is valid." % args[0])

    return os.EX_OK

if __name__ == '__main__':

    sys.exit(main(sys.argv[1:]))