Example #1
0
 def clear_cache(self):
     """ Clears all cached data (images and eveapi cache) """
     try:
         util.clean_dir(IMG_CACHE_PATH)
         util.clean_dir(APICACHE_PATH)
     except OSError, e:
         logging.getLogger('mevemon').exception("Failed to clear cache")
Example #2
0
    def to_sk(self):
        # clean up result directory
        if os.path.isdir(self.sk_dir): util.clean_dir(self.sk_dir)
        else: os.makedirs(self.sk_dir)

        clss = utils.extract_nodes([ClassOrInterfaceDeclaration], self.prg)
        is_ax_cls = any(map(lambda c: c._axiom, clss))        
        
        # consist builds up some class hierarchies which happens in main.py
        # prg.consist()
        # type.sk
        logging.info('generating Object.sk')
        self.gen_object_sk(is_ax_cls)

        logging.info('generating meta.sk')
        self.gen_meta_sk(is_ax_cls)

        # cls.sk
        logging.info('generating cls.sk')
        cls_sks = []
        for cls in clss:
            cls_sk = self.gen_cls_sk(cls, is_ax_cls)
            if cls_sk: cls_sks.append(cls_sk)

        logging.info('generating main.sk')
        self.gen_main_sk(cls_sks)

        logging.info('writing struct Object')
        # self.print_obj_struct(is_ax_cls)
        self.print_obj_struct(self.is_ax_cls)

        logging.info('generating array.sk')
        # self.gen_array_sk(is_ax_cls)
        self.gen_array_sk(self.is_ax_cls)
Example #3
0
def docutize(output_dir):
    util.clean_dir(output_dir)

    title = 'documentation'

    util.Index(
        title=title,
        writeable_title=title,
        nav_order=4,
        layout='main_page',
        has_children=True,
        content="full documentation for webweb's parameters and interfaces"
    ).write(output_dir)

    examplify(
        input_dir=DISPLAY_INPUT_DIR,
        data_output_dir=DISPLAY_DATA_OUTPUT_DIR,
        pages_output_dir=DISPLAY_PAGES_OUTPUT_DIR,
        nav_order=1,
        container='display',
        parent_container='documentation'
    )

    py_output_dir = os.path.join(output_dir, 'python')
    pydocutize(py_output_dir, 'documentation', 2)
Example #4
0
    def to_sk(self):
        # clean up result directory
        if os.path.isdir(self.sk_dir): util.clean_dir(self.sk_dir)
        else: os.makedirs(self.sk_dir)

        # consist builds up some class hierarchies which happens in main.py
        # prg.consist()
        # type.sk
        logging.info('generating Object.sk')
        self.gen_object_sk()

        logging.info('generating meta.sk')
        self.gen_meta_sk()

        # cls.sk
        logging.info('generating cls.sk')
        cls_sks = []
        clss = utils.extract_nodes([ClassOrInterfaceDeclaration], self.prg)
        for cls in clss:
            cls_sk = self.gen_cls_sk(cls)
            if cls_sk: cls_sks.append(cls_sk)

        logging.info('generating main.sk')
        self.gen_main_sk(cls_sks)

        logging.info('writing struct Object')
        self.print_obj_struct()

        logging.info('generating array.sk')
        self.gen_array_sk()
Example #5
0
 def clean_build_dir(self, stage_name, build_dir):
     self.report_build_step('%s clean' % (stage_name,))
     self.halt_on_failure()
     try:
         util.clean_dir(build_dir)
     except Exception as e:
       self.report_step_exception(e)
       raise
Example #6
0
 def clean_build_dir(self, stage_name, build_dir):
     self.report_build_step('%s clean' % (stage_name, ))
     self.halt_on_failure()
     try:
         util.clean_dir(build_dir)
     except Exception as e:
         self.report_step_exception(e)
         raise
Example #7
0
 def clean_build_dir(self, stage_name, build_dir):
     self.report_build_step('%s clean' % (stage_name,))
     self.halt_on_failure()
     try:
         util.clean_dir(build_dir)
     except OSError as e:
         if e.errno != errno.ENOENT:
             self.report_step_exception()
             raise
Example #8
0
 def test_clean_dir(self):
     self._setup_files()
     try: 
         self.assertEqual(len(os.listdir(self.basedir)), 3)
         util.clean_dir(self.basedir)
         self.assertTrue(os.path.exists(self.basedir))
         self.assertEqual(len(os.listdir(self.basedir)), 0)
     finally:
         if os.path.exists(self.basedir):
             shutil.rmtree(self.basedir)
Example #9
0
def main(args):
  # Delete it if already there so we ensure we get the correct version if the
  # version number in this script changes.
  clean_dir("deps")

  print("Cloning libuv...")
  run([
    "git", "clone", "--quiet", "--depth=1",
    "https://github.com/libuv/libuv.git",
    LIB_UV_DIR
  ])

  print("Getting tags...")
  run([
    "git", "fetch", "--quiet", "--depth=1", "--tags"
  ], cwd=LIB_UV_DIR)

  print("Checking out libuv " + LIB_UV_VERSION + "...")
  run([
    "git", "checkout", "--quiet", LIB_UV_VERSION
  ], cwd=LIB_UV_DIR)


  # TODO: Pin gyp to a known-good commit. Update a previously downloaded gyp
  # if it doesn't match that commit.
  print("Downloading gyp...")
  run([
    "git", "clone", "--quiet", "--depth=1",
    "https://chromium.googlesource.com/external/gyp.git",
    LIB_UV_DIR + "/build/gyp"
  ])

  # We don't need all of libuv and gyp's various support files.
  print("Deleting unneeded files...")
  remove_dir("deps/libuv/build/gyp/buildbot")
  remove_dir("deps/libuv/build/gyp/infra")
  remove_dir("deps/libuv/build/gyp/samples")
  remove_dir("deps/libuv/build/gyp/test")
  remove_dir("deps/libuv/build/gyp/tools")
  remove_dir("deps/libuv/docs")
  remove_dir("deps/libuv/img")
  remove_dir("deps/libuv/samples")
  remove_dir("deps/libuv/test")

  # We are going to commit libuv and GYP in the main Wren repo, so we don't
  # want them to be their own repos.
  remove_dir("deps/libuv/.git")
  remove_dir("deps/libuv/build/gyp/.git")

  # Libuv's .gitignore ignores GYP, but we want to commit it.
  replace_in_file("deps/libuv/.gitignore",
      "/build/gyp",
      "# /build/gyp (We do want to commit GYP in Wren's repo)")
Example #10
0
def main(args):
  # Delete it if already there so we ensure we get the correct version if the
  # version number in this script changes.
  clean_dir("deps")

  print("Cloning libuv...")
  run([
    "git", "clone", "--quiet", "--depth=1",
    "https://github.com/libuv/libuv.git",
    LIB_UV_DIR
  ])

  print("Getting tags...")
  run([
    "git", "fetch", "--quiet", "--depth=1", "--tags"
  ], cwd=LIB_UV_DIR)

  print("Checking out libuv " + LIB_UV_VERSION + "...")
  run([
    "git", "checkout", "--quiet", LIB_UV_VERSION
  ], cwd=LIB_UV_DIR)


  # TODO: Pin gyp to a known-good commit. Update a previously downloaded gyp
  # if it doesn't match that commit.
  print("Downloading gyp...")
  run([
    "git", "clone", "--quiet", "--depth=1",
    "https://chromium.googlesource.com/external/gyp.git",
    LIB_UV_DIR + "/build/gyp"
  ])

  # We don't need all of libuv and gyp's various support files.
  print("Deleting unneeded files...")
  try_remove_dir("deps/libuv/build/gyp/buildbot")
  try_remove_dir("deps/libuv/build/gyp/infra")
  try_remove_dir("deps/libuv/build/gyp/samples")
  try_remove_dir("deps/libuv/build/gyp/test")
  try_remove_dir("deps/libuv/build/gyp/tools")
  try_remove_dir("deps/libuv/docs")
  try_remove_dir("deps/libuv/img")
  try_remove_dir("deps/libuv/samples")

  # We are going to commit libuv and GYP in the main Wren repo, so we don't
  # want them to be their own repos.
  remove_dir("deps/libuv/.git")
  remove_dir("deps/libuv/build/gyp/.git")

  # Libuv's .gitignore ignores GYP, but we want to commit it.
  if os.path.isfile("deps/libuv/.gitignore"):
    with open("deps/libuv/.gitignore", "a") as libuv_ignore:
      libuv_ignore.write("!build/gyp")
Example #11
0
def main(argv):
    ap = argparse.ArgumentParser()
    ap.add_argument('--asan',
                    action='store_true',
                    default=False,
                    help='Build with address sanitizer enabled.')
    ap.add_argument('--debug',
                    action='store_true',
                    default=False,
                    help='Build in debug mode.')
    args, _ = ap.parse_known_args()

    source_dir = os.path.join('..', 'llvm-project')

    with step('cmake', halt_on_fail=True):
        projects = ['llvm', 'libc', 'clang', 'clang-tools-extra']

        cmake_args = ['-GNinja']
        if args.debug:
            cmake_args.append('-DCMAKE_BUILD_TYPE=Debug')
        else:
            cmake_args.append('-DCMAKE_BUILD_TYPE=Release')

        if args.asan:
            cmake_args.append('-DLLVM_USE_SANITIZER=Address')

        cmake_args.append('-DLLVM_ENABLE_PROJECTS={}'.format(
            ';'.join(projects)))

        run_command(['cmake', os.path.join(source_dir, 'llvm')] + cmake_args)

    with step('build llvmlibc', halt_on_fail=True):
        run_command(['ninja', 'llvmlibc'])

    with step('check-libc'):
        run_command(['ninja', 'check-libc'])

    if not args.asan:
        with step('Loader Tests'):
            run_command(['ninja', 'libc_loader_tests'])
        with step('Integration Tests'):
            run_command(['ninja', 'libc-integration-test'])
        with step('AOR Tests'):
            aor_dir = os.path.join(source_dir, 'libc', 'AOR_v20.02')
            # Remove the AOR build dir.
            util.clean_dir(os.path.join(aor_dir, 'build'))
            run_command(['make', 'check'], directory=aor_dir)

    if not args.debug:
        with step('Benchmark Utils Tests'):
            run_command(['ninja', 'libc-benchmark-util-tests'])
Example #12
0
def copy_webweb_client_to_site():
    """copies the webweb assets to a jekyll-friendly location"""
    for content_type in ['css', 'js']:
        assets_directory = os.path.join(JEKYLL_ASSETS_DIR, content_type, 'webweb')

        util.clean_dir(assets_directory)

        webweb_content_type_directory = os.path.join(WEBWEB_ASSETS_DIR, content_type)

        for file_name in os.listdir(webweb_content_type_directory):
            full_path = os.path.join(webweb_content_type_directory, file_name)

            if os.path.isfile(full_path):
                destination = os.path.join(assets_directory, file_name)
                shutil.copyfile(full_path, destination)
 def end(self):
     dir_name = 'output'
     if not os.path.exists(dir_name):
         os.makedirs(dir_name)
     if self.viz is not None:
         self.viz.save(os.path.join(dir_name, 'anim.gif'))
     clean_dir(self.tmp_dir)
     # render best candidate in output folder
     processes = render_individuals(self.population[:1],
                                    self.audio_duration, dir_name)
     wait_for_processes_completion(processes)
     # plot fitness and save it in output folder
     plot_fitness(self.fitness_over_time,
                  os.path.join(dir_name, 'fitness_over_time'))
     # also store a plot of the dsp graph
     plot_tree(self.population[0].tree, os.path.join(dir_name, 'graph'))
def trim_separate_align(input_fasta, mode, runsdir, version_dir):
    util.expect_file_exists(input_fasta)
    util.clean_dir(runsdir)
    util.mkdirp(runsdir)

    cmd = []
    cmd.append(common.preanalysis1)
    cmd.append(input_fasta)
    cmd.append(mode)
    cmd.append(common.scripts_dir)
    cmd.append(common.mafft)
    cmd.append(common.outgroup_spec)
    cmd.append(version_dir)
    cmd.append(str(common.available_cores))
    print(" ".join(cmd))
    subprocess.check_call(cmd, cwd=runsdir)
Example #15
0
def write_category(category, info, directory, number):
    """for each category, we'll make the following:
    - directories:
        - docs/documentation/{CATEGORY}
    - files:
        - docs/documentation/{CATEGORY}/{CATEGORY}.md
        - and for each ELEMENT, a file:
            - docs/documentation/{CATEGORY}/{ELEMENT}.md
    """
    category_dir = os.path.join(directory, category)
    util.clean_dir(category_dir)

    # write index
    if info.get('text'):
        with open(info['text'], 'r') as f:
            index_content = f.read()
    else:
        index_content = None

    index = util.Page(
        title=category,
        has_children=True,
        parent='documentation',
        content=index_content,
        permalink='/documentation/{category}/'.format(category=category),
        nav_order=number,
    )

    index.write(category_dir)

    for i, (element, components) in enumerate(info['elements'].items()):
        page_kwargs = {
            'title': element,
            'parent': category,
            'grand_parent': 'documentation',
            'nav_order': i + 1,
        }

        if components.get('text'):
            with open(components['text'], 'r') as f:
                page_kwargs['content'] = f.read()

        page = util.Page(**page_kwargs)
        page.write(category_dir)
Example #16
0
def export(pargenes_run_dir, paths):
    print("Pargenes run dir: " + pargenes_run_dir)
    pargenes_output = os.path.join(pargenes_run_dir, "pargenes_output")
    ml_run_dir = os.path.join(pargenes_output, "mlsearch_run", "results",
                              "ali_fasta")

    # export best ml tree (with support values if existing)
    src = ""
    if (common.pargenes_bs_trees > 0):
        src = os.path.join(pargenes_output, "supports_run", "results",
                           "ali_fasta.support.raxml.support")
    else:
        src = os.path.join(ml_run_dir, "ali_fasta.raxml.bestTree")
    shutil.copy(src, paths.raxml_best_tree)

    # export best tree with duplicates reattached
    #if ("thinned" not in paths.dataset):
    reattach_duplicates.reattach_duplicates(
        src, paths.raxml_best_tree_with_duplicate, paths.duplicates_json)

    # export best tree with TBE values
    if (common.pargenes_bs_trees > 0):
        src = os.path.join(pargenes_output, "supports_run", "results",
                           "ali_fasta.support.tbe.raxml.support")
        shutil.copy(src, paths.raxml_best_tree_tbe)


# export best ml model
    src = os.path.join(ml_run_dir, "ali_fasta.raxml.bestModel")
    shutil.copy(src, paths.raxml_best_model)

    # export all ml trees
    src = os.path.join(ml_run_dir, "sorted_ml_trees.newick")
    shutil.copy(src, paths.raxml_all_ml_trees)
    src = os.path.join(ml_run_dir, "sorted_ml_trees_ll.newick")
    shutil.copy(src, paths.raxml_all_ml_trees_ll)

    # export bootstrap trees
    if (common.pargenes_bs_trees > 0):
        src = os.path.join(pargenes_output, "concatenated_bootstraps",
                           "ali_fasta.bs")
        shutil.copy(src, paths.raxml_bootstrap_trees)

    av_pairwise_rf_distance = rf_distance.get_export_pairwise_rf_distance(
        paths.raxml_all_ml_trees, paths.raxml_all_ml_trees_rf_distances)
    toprint0 = "Average pairwise RF distance between all ML trees: " + str(
        av_pairwise_rf_distance)
    print(av_pairwise_rf_distance)

    # compute RF distance between starting and ML trees for the best run
    print("Computing rf distances between parsimony and ML trees...")
    rf_dir = os.path.join(paths.runs_dir, "rfdistances")
    util.clean_dir(rf_dir)
    util.mkdirp(rf_dir)
    prefix = os.path.join(rf_dir, "ml")
    tree1 = os.path.join(ml_run_dir, "ali_fasta.raxml.bestTree")
    tree2 = os.path.join(ml_run_dir, "ali_fasta.raxml.startTree")
    rf = rf_distance.get_rf_distance(tree1, tree2, prefix)
    toprint1 = "RF distance between the best ML tree and its starting tree: " + str(
        rf)
    all_runs_dir = os.path.join(ml_run_dir, "multiple_runs")

    sum_rf = 0.0
    deno_rf = 0.0
    for run in os.listdir(all_runs_dir):
        run_dir = os.path.join(all_runs_dir, run)
        prefix = os.path.join(rf_dir, run)
        tree1 = os.path.join(run_dir, "ali_fasta.raxml.bestTree")
        tree2 = os.path.join(run_dir, "ali_fasta.raxml.startTree")
        rf = rf_distance.get_rf_distance(tree1, tree2, prefix)
        sum_rf += rf
        deno_rf += 1.0
    av_rf = sum_rf / deno_rf
    toprint2 = "Average (over all the " + str(
        deno_rf) + " runs) RF distance between start and ML trees: " + str(
            av_rf)
    print(toprint0)
    print(toprint1)
    print(toprint2)
    with open(paths.rf_distance_report, "w") as writer:
        writer.write(toprint0 + "\n")
        writer.write(toprint1 + "\n")
        writer.write(toprint2)
def main():
    original_dir = os.getcwd()

    parser = argparse.ArgumentParser(
        description="Launches D-ITG test scenario in mininet.",
        epilog=EPILOG,
        formatter_class=argparse.RawDescriptionHelpFormatter)
    parser.add_argument("-l",
                        "--store_logs",
                        action="store_true",
                        default=False,
                        help="store logs (default: logs are discarded)")
    parser.add_argument("-t", "--topology", help="name of topology to run")
    parser.add_argument(
        "-B",
        "--bandwidth",
        default=1,
        help="Bandwidth of links in Mbit/s (default: 1 Mbit/s)")
    parser.add_argument("-lt",
                        "--list-topologies",
                        action="store_true",
                        help="list available topologies")
    parser.add_argument("-ls",
                        "--list-scenarios",
                        action="store_true",
                        help="list available scenarios")
    #     parser.add_argument("-s", "--scenario", help="select test scenario - dir name or just scenario name")
    parser.add_argument(
        "-d",
        "--scenarios-dir",
        help="directory with scenarios (default: current directory)")
    parser.add_argument(
        "-H",
        "--hosts",
        default=1,
        help=
        "Number of hosts in network ('per switch' for uniform distribution)")
    parser.add_argument(
        "-dr",
        "--random-distribution",
        action="store_true",
        default=False,
        help="Random hosts distribution in network (default: uniform)")
    parser.add_argument(
        "-stp",
        "--stp-switch",
        action="store_true",
        help="Run with STP switches. Disconnects from controller.")
    parser.add_argument(
        "-o",
        "--logs-dir",
        help=
        "directory for storing logs (default: logs/ in scenario directory). Implies storing logs"
    )
    parser.add_argument(
        "-r",
        "--repeat",
        type=int,
        default=1,
        help=
        "number of test case repeats (-1 for infinite). Warning: Logs will be overridden"
    )
    parser.add_argument("--tool",
                        default='iperf',
                        help="Traffic generation tool: iperf, ditg")
    parser.add_argument("-T",
                        "--traffic-type",
                        help="Type of generated traffic")
    parser.add_argument("--c_min", help="Minimum bitrate of generated traffic")
    parser.add_argument("--c_max", help="Maximum bitrate of generated traffic")
    parser.add_argument("-g",
                        "--clients",
                        help="Number of clients generating traffic")
    parser.add_argument("-f", "--flows", help="Number of flows per client")

    args = parser.parse_args()

    if not (args.list_scenarios
            or args.list_topologies) and not (args.topology):
        print "Wrong parameters: Need to set topology. Or just list topologies or scenarios."
        print ""
        parser.print_help()
        exit(1)

    if args.tool and args.tool == 'iperf':
        if not (args.traffic_type and args.c_min and args.c_max
                and args.clients and args.flows):
            print "Not enough traffic parameters!"
            print ""
            parser.print_help()
            exit(1)
        else:
            util.validate_params(args.traffic_type)
    elif args.tool and args.tool == 'ditg':
        print "ditg full support not implemented yet"
        exit(1)

    if args.list_topologies:
        print "Topologies ([name] s=[no. switches]) h=[no. hosts]:"
        for t in topos_info:
            print "{} s={} h={}".format(t, topos_info[t][0], topos_info[t][1])
        return 0

    scenarios_dir = original_dir
    if args.scenarios_dir:
        scenarios_dir = args.scenarios_dir

    if args.list_scenarios:
        print "Scenarios ([name] ):"
        for s in get_scenarios(scenarios_dir):
            print s
        return 0

    distribution = ''
    if (args.random_distribution):
        distribution = "random"
    else:
        distribution = "uniform"

    traffic_generation = False
    scenario = create_scenario_name(args.traffic_type, args.c_min, args.c_max,
                                    args.clients, args.flows, args.topology,
                                    distribution, args.hosts)
    print scenario
    all_scenarios = get_scenarios(scenarios_dir)
    scenario_dir = None
    if scenario in all_scenarios:
        scenario_dir = os.path.join(scenarios_dir, scenario)
    else:
        os.mkdir(scenarios_dir + '/' + scenario)
        scenario_dir = os.path.join(scenarios_dir, scenario)
        traffic_generation = True

    # Get topology
    topology = args.topology
    if isGenerated(topology, args.hosts, distribution):
        print "Topology {}-{}-{} exists".format(topology, distribution,
                                                args.hosts)
    else:
        if topology in get_zoo_topologies():
            generate_topology(topology, args.hosts, distribution,
                              args.bandwidth)
        else:
            print "Wrong topology name: " + topology
            print "Available generated: "
            print get_generated_topologies()
            print "Available to generate: "
            print get_zoo_topologies()
            exit(1)

    topology = "gen_" + topology + "_" + distribution + "_" + str(args.hosts)

    # Check if scenario can be run on topology
    #topology_hosts = topos_info[topology][1]
    #scenario_hosts = int(scenario_dir.split('_')[-1])
    #if scenario_hosts > topology_hosts:
    #    print "Cannot run scenario {} ({} hosts) on topology {} ({} hosts). Too many hosts in scenario.".format(scenario, scenario_hosts, topology, topology_hosts)
    #    exit(4)
    #     print scenario_dir
    #     if not os.path.exists(scenario_dir):
    #         print "Not found generated test dir: {}. Please run ./test_generator_itg.py first.".format(scenario_dir)
    #         exit(4)

    os.chdir(scenario_dir)

    log_dir = None
    # Log dir implies storing logs
    if args.logs_dir:
        args.store_logs = True

    if args.store_logs:
        if args.logs_dir:
            if os.path.isabs(args.logs_dir):
                log_dir = args.logs_dir
            else:
                # Logs path relative to CWD
                log_dir = os.path.join(original_dir, args.logs_dir)
        else:
            log_dir = OUTPUT_DIR

        # Create or clean directory for logs
        util.clean_dir(log_dir, suffix=".log")
        print "Storing logs in: {}".format(os.path.join(os.getcwd(), log_dir))
    else:
        print "Not storing logs."

    print "Topology: {} Scenario: {}".format(topology, scenario)

    os.chdir(original_dir)

    #topo = importlib.import_module("gen_{}".format(topology))

    #Change comments to load a fixed topology
    #f, filename, desc = imp.find_module('gen_bteurope', [os.path.abspath(os.getcwd()) + '/topologies'])
    #topo = imp.load_module('gen_bteurope', f, filename, desc)

    f, filename, desc = imp.find_module(
        "{}".format(topology), [os.path.abspath(os.getcwd()) + '/topologies'])
    topo = imp.load_module("{}".format(topology), f, filename, desc)

    print "Launching Mininet.."
    net = Mininet(topo=topo.GeneratedTopo(),
                  controller=RemoteController,
                  switch=OVSSwitch,
                  host=CPULimitedHost,
                  link=TCLink,
                  autoSetMacs=True)

    # Start network
    print "Starting network.."
    net.start()

    #if(traffic_generation):
    generate_traffic(net.hosts, scenario_dir, args.clients, args.flows,
                     args.traffic_type, args.c_min, args.c_max)

    if args.stp_switch:
        util.turn_legacy_on()
        print "Waiting {} s ...".format(LEGACY_INITIALIZATION_DELAY)
        time.sleep(LEGACY_INITIALIZATION_DELAY)

    print "Waiting {} s for initialization of mininet and controller...".format(
        INITIALIZATION_DELAY)
    time.sleep(INITIALIZATION_DELAY)

    # Preparing TestTool #TODO choosing various tools based on config
    if args.tool == 'iperf':
        print "Using iperf"
        test_tool = TestToolIperf(net, log_dir)
    elif args.tool == 'ditg':
        print "Using ditg"
        test_tool = TestToolITG(net, log_dir)
    else:
        print "ERROR Unknown tool: {}".format(args.tool)
        net.stop()
        sys.exit(3)

    os.chdir(scenario_dir)

    # Run servers
    hosts = net.hosts
    print "Starting servers..."
    for host in hosts:
        host_name = host.name
        test_tool.run_server(host_name)

    iterations = args.repeat

    if iterations != 1:
        start_time = time.time()
    i = 0
    while i != iterations:
        if iterations != 1:
            print "Iteration: {} / {}".format(i + 1, iterations)
        iteration_start_time = time.time()
        # Run ITGSends per host config
        threads = []
        for f in os.listdir(os.path.curdir):
            if os.path.isfile(f) and f.endswith(TRAFFIC_FILE_SUFFIX):
                host_name = get_hostname(f)
                test_tool.run_client(host_name, f)

        # CLI(net)    # DEBUG
        print "Waiting for test end.."
        retcode = test_tool.wait_for_end()

        end_time = time.time()
        print "Testing time: {:0.2f} s".format(end_time - iteration_start_time)
        i += 1
    if iterations != 1:
        print "Total testing time: {:0.2f} s".format(end_time - start_time)
    print "Stopping network.."
    net.stop()
    s = os.stat('.')
    if args.store_logs:
        util.rchmod(log_dir, s.st_uid, s.st_gid)
    os.chdir(original_dir)
    print "Killing all test tool processes."
    test_tool.kill_all()

    if retcode == 2:
        print "END Test finished with WARNINGS"
        sys.exit(2)
    elif retcode == 1:
        print "ERROR CRITICAL server went down during test"
        sys.exit(1)
    else:
        print "END Test finished successfully"
        sys.exit(0)
Example #18
0
def to_sk(cmd, smpls, tmpl, sk_dir):
  # clean up result directory
  if os.path.isdir(sk_dir): util.clean_dir(sk_dir)
  else: os.makedirs(sk_dir)

  # reset global variables so that we can run this encoding phase per demo
  reset()

  # update global constants
  def logged(mtd):
    if mtd.is_init: return False
    clss = util.flatten_classes([mtd.clazz], "subs")
    return sample.mtd_appears(smpls, clss, mtd.name)
  mtds = filter(logged, methods())
  if mtds:
    n_params = 2 + max(map(len, map(op.attrgetter("params"), mtds)))
  else: # no meaningful logs in the sample?
    n_params = 2

  n_evts = sample.max_evts(smpls)
  if cmd == "android":
    n_views = sample.max_views(smpls)
    magic_S = max(3, n_evts + 1, n_views)
  else:
    magic_S = max(5, n_evts + 1) # at least 5, just in case

  n_ios = sample.max_IOs(smpls)

  global _const
  _const = u"""
    int P = {}; // length of parameters (0: (>|<)mid, 1: receiver, 2...)
    int S = {}; // length of arrays for Java collections
    int N = {}; // length of logs
  """.format(n_params, magic_S, n_ios)

  # type.sk
  logging.info("building class hierarchy")
  tmpl.consist()
  # merge all classes and interfaces, except for primitive types
  clss, _ = util.partition(lambda c: util.is_class_name(c.name), classes())
  bases = rm_subs(clss)
  gen_type_sk(sk_dir, bases)

  # cls.sk
  cls_sks = []
  for cls in tmpl.classes:
    # skip the collections, which will be encoded at type.sk
    if repr(cls).split('_')[0] in C.collections: continue
    cls_sk = gen_cls_sk(sk_dir, smpls, cls)
    if cls_sk: cls_sks.append(cls_sk)

  # sample_x.sk
  smpl_sks = []
  for smpl in smpls:
    smpl_sk = "sample_" + smpl.name + ".sk"
    smpl_sks.append(smpl_sk)
    sk_path = os.path.join(sk_dir, smpl_sk)
    gen_smpl_sk(sk_path, smpl, tmpl, tmpl.harness(smpl.name))

  # log.sk
  gen_log_sk(sk_dir, tmpl)

  # sample.sk that imports all the other sketch files
  buf = cStringIO.StringIO()

  # deprecated as we use regex generator for class/method roles
  ## --bnd-cbits: the number of bits for integer holes
  #bits = max(5, int(math.ceil(math.log(len(methods()), 2))))
  #buf.write("pragma options \"--bnd-cbits {}\";\n".format(bits))

  # --bnd-unroll-amnt: the unroll amount for loops
  unroll_amnt = max(n_params, magic_S)
  buf.write("pragma options \"--bnd-unroll-amnt {}\";\n".format(unroll_amnt))

  # --bnd-inline-amnt: bounds inlining to n levels of recursion
  inline_amnt = None # use a default value if not set
  if cmd == "android":
    #inline_amnt = 2 # depth of View hierarchy (at findViewByTraversal)
    inline_amnt = 1 # no recursion for flat Views
  elif cmd == "gui":
    # setting it 1 means there is no recursion
    inline_amnt = 1
  if inline_amnt:
    buf.write("pragma options \"--bnd-inline-amnt {}\";\n".format(inline_amnt))
    buf.write("pragma options \"--bnd-bound-mode CALLSITE\";\n")

  sks = ["log.sk", "type.sk"] + cls_sks + smpl_sks
  for sk in sks:
    buf.write("include \"{}\";\n".format(sk))
  with open(os.path.join(sk_dir, "sample.sk"), 'w') as f:
    f.write(buf.getvalue())
    logging.info("encoding " + f.name)
  buf.close()
def main():
    original_dir = os.getcwd()

    parser = argparse.ArgumentParser(description="Launches D-ITG test scenario in mininet.", epilog=EPILOG,
                                     formatter_class=argparse.RawDescriptionHelpFormatter)
    parser.add_argument("-l", "--store_logs", action="store_true", default=False,
                        help="store logs (default: logs are discarded)")
    parser.add_argument("-t", "--topology", help="name of topology to run")
    parser.add_argument("-lt", "--list-topologies", action="store_true", help="list available topologies")
    parser.add_argument("-ls", "--list-scenarios", action="store_true", help="list available scenarios")
    parser.add_argument("-s", "--scenario", help="select test scenario - dir name or just scenario name")
    parser.add_argument("-d", "--scenarios-dir", help="directory with scenarios (default: current directory)")
    parser.add_argument("-c", "--stp-switch", action="store_true",
                        help="Run with STP switches. Disconnects from controller.")
    parser.add_argument("-o", "--logs-dir",
                        help="directory for storing logs (default: logs/ in scenario directory). Implies storing logs")
    parser.add_argument("-r", "--repeat", type=int, default=1,
                        help="number of test case repeats (-1 for infinite). Warning: Logs will be overridden")
    parser.add_argument("--tool", default='iperf',
                        help="Traffic generation tool: iperf, ditg")

    args = parser.parse_args()

    if not (args.list_scenarios or args.list_topologies) and not (args.topology and args.scenario):
        print "Wrong parameters: Need to set topology and scenario. Or just list topologies or scenarios."
        print ""
        parser.print_help()
        exit(1)

    if args.list_topologies:
        print "Topologies ([name] s=[no. switches]) h=[no. hosts]:"
        for t in topos_info:
            print "{} s={} h={}".format(t, topos_info[t][0], topos_info[t][1])
        return 0

    scenarios_dir = original_dir
    if args.scenarios_dir:
        scenarios_dir = args.scenarios_dir

    if args.list_scenarios:
        print "Scenarios ([name] ):"
        for s in get_scenarios(scenarios_dir):
            print s
        return 0

    # Get scenario dir
    scenario = args.scenario
    all_scenarios = get_scenarios(scenarios_dir)
    scenario_dir = None
    if scenario in all_scenarios:
        scenario_dir = os.path.join(scenarios_dir, scenario)
    else:
        for s in all_scenarios:
            if "_"+scenario+"_" in s:
                scenario_dir = os.path.join(scenarios_dir, s)

    if not scenario_dir:
        print "Wrong scenario name: "+scenario
        print "Available: "
        print all_scenarios
        exit(1)

    # Get topology
    topology = args.topology
    if topology not in get_generated_topologies():
	if topology not in get_zoo_topologies():
            print "Wrong topology name: "+topology
            print "Available generated: "
            print get_generated_topologies()
            print "Available to generate: "
            print get_zoo_topologies()
            exit(1)
        else:
	    generate_topology(topology)

    # Check if scenario can be run on topology
    topology_hosts = topos_info[topology][1]
    scenario_hosts = int(scenario_dir.split('_')[-1])
    if scenario_hosts > topology_hosts:
        print "Cannot run scenario {} ({} hosts) on topology {} ({} hosts). Too many hosts in scenario.".format(scenario, scenario_hosts, topology, topology_hosts)
        exit(4)

    if not os.path.exists(scenario_dir):
        print "Not found generated test dir: {}. Please run ./test_generator_itg.py first.".format(scenario_dir)
        exit(4)
    os.chdir(scenario_dir)

    log_dir = None
    # Log dir implies storing logs
    if args.logs_dir:
        args.store_logs = True

    if args.store_logs:
        if args.logs_dir:
            if os.path.isabs(args.logs_dir):
                log_dir = args.logs_dir
            else:
                # Logs path relative to CWD
                log_dir = os.path.join(original_dir, args.logs_dir)
        else:
            log_dir = OUTPUT_DIR

        # Create or clean directory for logs
        util.clean_dir(log_dir, suffix=".log")
        print "Storing logs in: {}".format(os.path.join(os.getcwd(), log_dir))
    else:
        print "Not storing logs."
    print "Topology: {} Scenario: {}".format(topology, scenario_dir)

    print "Launching Mininet.."
    net = Mininet(topo=topos[topology](lopts={"bw": 10}), controller=RemoteController, switch=OVSSwitch,
                  link=TCLink, autoSetMacs=True)

    # Start network
    print "Starting network.."
    net.start()

    if args.stp_switch:
        util.turn_legacy_on()
        print "Waiting {} s ...".format(LEGACY_INITIALIZATION_DELAY)
        time.sleep(LEGACY_INITIALIZATION_DELAY)

    print "Waiting {} s for initialization of mininet and controller...".format(INITIALIZATION_DELAY)
    time.sleep(INITIALIZATION_DELAY)

    # Preparing TestTool #TODO choosing various tools based on config
    if args.tool == 'iperf':
        test_tool = TestToolIperf(net, log_dir)
    elif args.tool == 'ditg':
        test_tool = TestToolITG(net, log_dir)
    else:
        print "ERROR Unknown tool: {}".format(args.tool)
        net.stop()
        sys.exit(3)

    # Run servers
    hosts = net.hosts
    print "Starting servers..."
    for host in hosts:
        host_name = host.name
        test_tool.run_server(host_name)

    iterations = args.repeat

    if iterations != 1:
        start_time = time.time()
    i = 0
    while i != iterations:
        if iterations != 1:
            print "Iteration: {} / {}".format(i+1, iterations)
        iteration_start_time = time.time()
        # Run ITGSends per host config
        threads = []
        for f in os.listdir(os.path.curdir):
            if os.path.isfile(f) and f.endswith(ITG_SCRIPT_SUFFIX):
                host_name = get_hostname(f)
                test_tool.run_client(host_name, f)

        # CLI(net)    # DEBUG
        print "Waiting for test end.."
        retcode = test_tool.wait_for_end()

        end_time = time.time()
        print "Testing time: {:0.2f} s".format(end_time-iteration_start_time)
        i += 1
    if iterations != 1:
        print "Total testing time: {:0.2f} s".format(end_time-start_time)
    print "Stopping network.."
    net.stop()
    s = os.stat('.')
    if args.store_logs:
        util.rchmod(log_dir, s.st_uid, s.st_gid)
    os.chdir(original_dir)
    print "Killing all test tool processes."
    test_tool.kill_all()

    if retcode == 2:
        print "END Test finished with WARNINGS"
        sys.exit(2)
    elif retcode == 1:
        print "ERROR CRITICAL server went down during test"
        sys.exit(1)
    else:
        print "END Test finished successfully"
        sys.exit(0)
Example #20
0
def pydocutize(output_dir, parent, nav_order):
    functions_mapping = {
        'Web': {
            'display_name': 'webweb.Web',
            'functions': [
                '__init__',
                'show',
                'save',
            ],
        },
        'Network': {
            'display_name': 'webweb.Network',
            'functions': [
                '__init__',
                'add_layer',
            ],
        }
    }

    util.clean_dir(output_dir)
    import pydoc
    import inspect
    webweb_module = util.get_module('webweb', WEBWEB_CODE)

    container = 'python'

    with open('python_documentation.md', 'r') as f:
        index_content = f.read()

    util.Index(
        title=container,
        writeable_title=container,
        nav_order=2,
        layout='main_page',
        has_children=True,
        parent=parent,
        content=index_content,
    ).write(output_dir)

    counter = 1
    for object_name in functions_mapping.keys():
        _object = getattr(webweb_module, object_name)

        object_display_name = functions_mapping[object_name]['display_name']

        for function_name in functions_mapping[object_name]['functions']:
            function_object = getattr(_object, function_name)
            function_signature = inspect.signature(function_object)

            # we want to exclude `self`
            parameters_list = []
            for parameter, parameter_string in function_signature.parameters.items():
                if parameter != 'self':
                    parameters_list.append(str(parameter_string))

            signature_string = "(" + ", ".join(parameters_list) + ")"

            function_doc = pydoc.getdoc(function_object)
            qualified_function_name = object_display_name
            writeable_function_name = object_display_name
            if function_name == '__init__':
                function_doc = pydoc.getdoc(_object) + "\n\n" + function_doc
            else:
                qualified_function_name += '.' + function_name
                writeable_function_name += '_' + function_name

            content = "```python\n{name}{signature}\n````\n\n{doc}".format(
                name=qualified_function_name,
                signature=signature_string,
                doc=function_doc,
            )

            util.Page(
                title=qualified_function_name,
                writeable_title=writeable_function_name,
                nav_order=counter,
                layout='main_page',
                parent=container,
                grand_parent=parent,
                content=content,
            ).write(output_dir)

            counter += 1
def main():
    original_dir = os.getcwd()
    
    parser = argparse.ArgumentParser(description="Launches D-ITG test scenario in mininet.", epilog=EPILOG,
                                     formatter_class=argparse.RawDescriptionHelpFormatter)
    parser.add_argument("-l", "--store_logs", action="store_true", default=False,
                        help="store logs (default: logs are discarded)")
    parser.add_argument("-t", "--topology", help="name of topology to run")
    parser.add_argument("-B", "--bandwidth", default=1, help="Bandwidth of links in Mbit/s (default: 1 Mbit/s)")
    parser.add_argument("-lt", "--list-topologies", action="store_true", help="list available topologies")
    parser.add_argument("-ls", "--list-scenarios", action="store_true", help="list available scenarios")
#     parser.add_argument("-s", "--scenario", help="select test scenario - dir name or just scenario name")
    parser.add_argument("-d", "--scenarios-dir", help="directory with scenarios (default: current directory)")
    parser.add_argument("-H", "--hosts", default=1, help="Number of hosts in network ('per switch' for uniform distribution)")
    parser.add_argument("-dr", "--random-distribution", action="store_true", default=False, 
                        help="Random hosts distribution in network (default: uniform)")
    parser.add_argument("-stp", "--stp-switch", action="store_true",
                        help="Run with STP switches. Disconnects from controller.")
    parser.add_argument("-o", "--logs-dir",
                        help="directory for storing logs (default: logs/ in scenario directory). Implies storing logs")
    parser.add_argument("-r", "--repeat", type=int, default=1,
                        help="number of test case repeats (-1 for infinite). Warning: Logs will be overridden")
    parser.add_argument("--tool", default='iperf',
                        help="Traffic generation tool: iperf, ditg")
    parser.add_argument("-T", "--traffic-type", help="Type of generated traffic")
    parser.add_argument("--c_min", help="Minimum bitrate of generated traffic")
    parser.add_argument("--c_max", help="Maximum bitrate of generated traffic")
    parser.add_argument("-g", "--clients", help="Number of clients generating traffic")
    parser.add_argument("-f", "--flows", help="Number of flows per client")
    
    args = parser.parse_args()

    if not (args.list_scenarios or args.list_topologies) and not (args.topology):
        print "Wrong parameters: Need to set topology. Or just list topologies or scenarios."
        print ""
        parser.print_help()
        exit(1)
    
    if args.tool and args.tool == 'iperf':
        if not (args.traffic_type and args.c_min and args.c_max and args.clients and args.flows):
            print "Not enough traffic parameters!"
            print ""
            parser.print_help()
            exit(1)
        else:
            util.validate_params(args.traffic_type)
    elif args.tool and args.tool == 'ditg':
        print "ditg full support not implemented yet"
        exit(1)

    if args.list_topologies:
        print "Topologies ([name] s=[no. switches]) h=[no. hosts]:"
        for t in topos_info:
            print "{} s={} h={}".format(t, topos_info[t][0], topos_info[t][1])
        return 0

    scenarios_dir = original_dir
    if args.scenarios_dir:
        scenarios_dir = args.scenarios_dir

    if args.list_scenarios:
        print "Scenarios ([name] ):"
        for s in get_scenarios(scenarios_dir):
            print s
        return 0
    
    
    
    distribution = ''
    if(args.random_distribution):
        distribution = "random"
    else:
        distribution = "uniform"
    
    traffic_generation = False
    scenario = create_scenario_name(args.traffic_type, args.c_min, args.c_max, args.clients, args.flows, args.topology, distribution, args.hosts)
    print scenario
    all_scenarios = get_scenarios(scenarios_dir)
    scenario_dir = None
    if scenario in all_scenarios:
        scenario_dir = os.path.join(scenarios_dir, scenario)
    else:
        os.mkdir(scenarios_dir + '/' + scenario)
        scenario_dir = os.path.join(scenarios_dir, scenario)
        traffic_generation = True

    # Get topology
    topology = args.topology
    if isGenerated(topology, args.hosts, distribution):
        print "Topology {}-{}-{} exists".format(topology, distribution, args.hosts)
    else:
        if topology in get_zoo_topologies():
            generate_topology(topology, args.hosts, distribution, args.bandwidth)    
        else:
            print "Wrong topology name: "+topology
            print "Available generated: "   
            print get_generated_topologies()
            print "Available to generate: "
            print get_zoo_topologies()
            exit(1)
    
    topology = "gen_" + topology + "_" + distribution + "_" + str(args.hosts)
    
    # Check if scenario can be run on topology
    #topology_hosts = topos_info[topology][1]
    #scenario_hosts = int(scenario_dir.split('_')[-1])
    #if scenario_hosts > topology_hosts:
    #    print "Cannot run scenario {} ({} hosts) on topology {} ({} hosts). Too many hosts in scenario.".format(scenario, scenario_hosts, topology, topology_hosts)
    #    exit(4)
#     print scenario_dir
#     if not os.path.exists(scenario_dir):
#         print "Not found generated test dir: {}. Please run ./test_generator_itg.py first.".format(scenario_dir)
#         exit(4)

    os.chdir(scenario_dir)

    log_dir = None
    # Log dir implies storing logs
    if args.logs_dir:
        args.store_logs = True

    if args.store_logs:
        if args.logs_dir:
            if os.path.isabs(args.logs_dir):
                log_dir = args.logs_dir
            else:
                # Logs path relative to CWD
                log_dir = os.path.join(original_dir, args.logs_dir)
        else:
            log_dir = OUTPUT_DIR

        # Create or clean directory for logs
        util.clean_dir(log_dir, suffix=".log")
        print "Storing logs in: {}".format(os.path.join(os.getcwd(), log_dir))
    else:
        print "Not storing logs."
        
    print "Topology: {} Scenario: {}".format(topology, scenario)
    
    os.chdir(original_dir)
    
    #topo = importlib.import_module("gen_{}".format(topology))

    #Change comments to load a fixed topology   
    #f, filename, desc = imp.find_module('gen_bteurope', [os.path.abspath(os.getcwd()) + '/topologies'])
    #topo = imp.load_module('gen_bteurope', f, filename, desc)
    
    
    f, filename, desc = imp.find_module("{}".format(topology) , [os.path.abspath(os.getcwd()) + '/topologies'])
    topo = imp.load_module("{}".format(topology) , f, filename, desc)
    
    print "Launching Mininet.."
    net = Mininet(topo=topo.GeneratedTopo(), controller=RemoteController, switch=OVSSwitch, host=CPULimitedHost,
                  link=TCLink, autoSetMacs=True)

    # Start network
    print "Starting network.."
    net.start()
    
    #if(traffic_generation):
    generate_traffic(net.hosts, scenario_dir, args.clients, args.flows, args.traffic_type, args.c_min, args.c_max)
    
    if args.stp_switch:
        util.turn_legacy_on()
        print "Waiting {} s ...".format(LEGACY_INITIALIZATION_DELAY)
        time.sleep(LEGACY_INITIALIZATION_DELAY)

    print "Waiting {} s for initialization of mininet and controller...".format(INITIALIZATION_DELAY)
    time.sleep(INITIALIZATION_DELAY)

    # Preparing TestTool #TODO choosing various tools based on config
    if args.tool == 'iperf':
        print "Using iperf"
        test_tool = TestToolIperf(net, log_dir)
    elif args.tool == 'ditg':
        print "Using ditg"
        test_tool = TestToolITG(net, log_dir)
    else:
        print "ERROR Unknown tool: {}".format(args.tool)
        net.stop()
        sys.exit(3)
       
    os.chdir(scenario_dir)
     
    # Run servers
    hosts = net.hosts
    print "Starting servers..."
    for host in hosts:
        host_name = host.name
        test_tool.run_server(host_name)

    iterations = args.repeat
    
    if iterations != 1:
        start_time = time.time()
    i = 0
    while i != iterations:
        if iterations != 1:
            print "Iteration: {} / {}".format(i+1, iterations)
        iteration_start_time = time.time()
        # Run ITGSends per host config
        threads = []
        for f in os.listdir(os.path.curdir):
            if os.path.isfile(f) and f.endswith(TRAFFIC_FILE_SUFFIX):
                host_name = get_hostname(f)
                test_tool.run_client(host_name, f)

        # CLI(net)    # DEBUG
        print "Waiting for test end.."
        retcode = test_tool.wait_for_end()

        end_time = time.time()
        print "Testing time: {:0.2f} s".format(end_time-iteration_start_time)
        i += 1
    if iterations != 1:
        print "Total testing time: {:0.2f} s".format(end_time-start_time)
    print "Stopping network.."
    net.stop()
    s = os.stat('.')
    if args.store_logs:
        util.rchmod(log_dir, s.st_uid, s.st_gid)
    os.chdir(original_dir)
    print "Killing all test tool processes."
    test_tool.kill_all()

    if retcode == 2:
        print "END Test finished with WARNINGS"
        sys.exit(2)
    elif retcode == 1:
        print "ERROR CRITICAL server went down during test"
        sys.exit(1)
    else:
        print "END Test finished successfully"
        sys.exit(0)
Example #22
0
def to_sk(pgr, sk_dir):
  # clean up result directory
  if os.path.isdir(sk_dir): util.clean_dir(sk_dir)
  else: os.makedirs(sk_dir)

  # reset global variables so that we can run this encoding phase per demo
  reset()

  # update global constants
  # TODO: conservative analysis of possible length of collections
  # TODO: counting .add() calls or something?
  magic_S = 7

  global _const
  _const = u"""
    int S = {}; // length of arrays for Java collections
  """.format(magic_S)

  # type.sk
  logging.info("building class hierarchy")
  pgr.consist()
  # merge all classes and interfaces, except for primitive types
  clss, _ = util.partition(lambda c: util.is_class_name(c.name), classes())
  bases = rm_subs(clss)
  gen_type_sk(sk_dir, bases)

  # cls.sk
  cls_sks = []
  for cls in pgr.classes:
    # skip the collections, which will be encoded at type.sk
    if repr(cls).split('_')[0] in C.collections: continue
    cls_sk = gen_cls_sk(sk_dir, cls)
    if cls_sk: cls_sks.append(cls_sk)

  # log.sk
  gen_log_sk(sk_dir, pgr)

  # main.sk that imports all the other sketch files
  buf = cStringIO.StringIO()

  # --bnd-cbits: the number of bits for integer holes
  bits = max(5, int(math.ceil(math.log(len(methods()), 2))))
  buf.write("pragma options \"--bnd-cbits {}\";\n".format(bits))

  # --bnd-unroll-amnt: the unroll amount for loops
  unroll_amnt = None # use a default value if not set
  unroll_amnt = magic_S # TODO: other criteria?
  if unroll_amnt:
    buf.write("pragma options \"--bnd-unroll-amnt {}\";\n".format(unroll_amnt))

  # --bnd-inline-amnt: bounds inlining to n levels of recursion
  inline_amnt = None # use a default value if not set
  # setting it 1 means there is no recursion
  if inline_amnt:
    buf.write("pragma options \"--bnd-inline-amnt {}\";\n".format(inline_amnt))
    buf.write("pragma options \"--bnd-bound-mode CALLSITE\";\n")

  sks = ["log.sk", "type.sk"] + cls_sks
  for sk in sks:
    buf.write("include \"{}\";\n".format(sk))

  # TODO: make harness (if not exists)

  with open(os.path.join(sk_dir, "main.sk"), 'w') as f:
    f.write(buf.getvalue())
    logging.info("encoding " + f.name)
  buf.close()