sheep-simulator

#!/usr/bin/env python

# Copyright (c) 2013 Galah Group LLC
# Copyright (c) 2013 Other contributers as noted in the CONTRIBUTERS file
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

import tempfile
import shutil
import os
import os.path
import sys

to_delete = []

def resolve_path(path):
    return os.path.abspath(os.path.expanduser(path))

def parse_arguments(args = sys.argv[1:]):
    from optparse import OptionParser, make_option

    option_list = [
        make_option(
            "-a", "--action", dest = "actions", action = "store",
            help = "Comma separated list of actions to feed "
                   "to the test harness"
        ),
        make_option(
            "-i", "--include", dest = "packages", action = "append",
            default = [],
            help = "Specify multiple times to add files and/or directories "
                   "that will be in the current directory when the harness is "
                   "run."
        )
    ]

    parser = OptionParser(
        usage = "usage: %prog [options] [HARNESS_DIR] [TESTABLES_DIR]",
        description = "Tool for testing Galah test harnesses.",
        option_list = option_list
    )

    options, args = parser.parse_args(args)

    if len(args) < 2:
        parser.error("At least two arguments must be supplied.")

    return (options, args)

import os.path
import subprocess
import json
def main():
    options, args = parse_arguments()

    harness_directory = resolve_path(args[0])
    testables_directory = resolve_path(args[1])

    for i in (harness_directory, testables_directory):
        if not os.path.isdir(i):
            print >> sys.stderr, i, "is not a directory."
            exit(1)

    includes = []
    for i in options.packages:
        if os.path.exists(i):
            includes.append(resolve_path(i))
        else:
            print >> sys.stderr, i, "does not exist."
            exit(1)

    temp_dir = tempfile.mkdtemp()
    to_delete.append(temp_dir)
    harness_files = [
        os.path.join(harness_directory, i) for i in
            os.listdir(harness_directory)
    ]
    for i in harness_files + includes:
        if os.path.isdir(i):
            shutil.copytree(i, os.path.join(temp_dir, os.path.basename(i)))
        else:
            shutil.copy(i, os.path.join(temp_dir, os.path.basename(i)))

    default_request = {
        "harness_directory": temp_dir,
        "testables_directory": testables_directory,
        "raw_submission": {},
        "raw_harness": {},
        "raw_assignment": {},
        "actions": options.actions.split(",") if options.actions else []
    }

    # The location of the harness's main binary
    harness_bin = os.path.join(temp_dir, "main")
    try:
        process = subprocess.Popen(
            [harness_bin],
            stdin = subprocess.PIPE,
            stdout = subprocess.PIPE
        )
    except OSError as e:
        print >> sys.stderr, "Could not execute", harness_bin, ", ", e
        exit(1)

    json.dump(default_request, process.stdin)
    process.stdin.close()

    result = json.load(process.stdout)
    json.dump(result, sys.stdout, indent = 2, sort_keys = True)

    process.wait()

    # Make sure we end with a newline
    print

if __name__ == "__main__":
    try:
        main()
    finally:
        for i in to_delete:
            shutil.rmtree(i)