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tools/kvm_stat: switch to argparse
optparse is deprecated for a while, hence switching over to argparse (which also works with python2). As a consequence, help output has some subtle changes, the most significant one being that the options are all listed explicitly instead of a universal '[options]' indicator. Also, some of the error messages are phrased slightly different. While at it, squashed a number of minor PEP8 issues. Signed-off-by: Stefan Raspl <raspl@linux.ibm.com> Message-Id: <20200306114250.57585-3-raspl@linux.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -25,7 +25,7 @@ import sys
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import locale
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import locale
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import os
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import os
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import time
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import time
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import optparse
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import argparse
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import ctypes
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import ctypes
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import fcntl
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import fcntl
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import resource
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import resource
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@ -873,7 +873,7 @@ class Stats(object):
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if options.debugfs:
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if options.debugfs:
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providers.append(DebugfsProvider(options.pid, options.fields,
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providers.append(DebugfsProvider(options.pid, options.fields,
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options.dbgfs_include_past))
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options.debugfs_include_past))
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if options.tracepoints or not providers:
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if options.tracepoints or not providers:
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providers.append(TracepointProvider(options.pid, options.fields))
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providers.append(TracepointProvider(options.pid, options.fields))
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@ -1550,84 +1550,66 @@ Interactive Commands:
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Press any other key to refresh statistics immediately.
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Press any other key to refresh statistics immediately.
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""" % (PATH_DEBUGFS_KVM, PATH_DEBUGFS_TRACING)
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""" % (PATH_DEBUGFS_KVM, PATH_DEBUGFS_TRACING)
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class PlainHelpFormatter(optparse.IndentedHelpFormatter):
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class Guest_to_pid(argparse.Action):
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def format_description(self, description):
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def __call__(self, parser, namespace, values, option_string=None):
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if description:
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try:
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return description + "\n"
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pids = Tui.get_pid_from_gname(values)
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else:
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except:
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return ""
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sys.exit('Error while searching for guest "{}". Use "-p" to '
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'specify a pid instead?'.format(values))
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if len(pids) == 0:
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sys.exit('Error: No guest by the name "{}" found'
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.format(values))
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if len(pids) > 1:
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sys.exit('Error: Multiple processes found (pids: {}). Use "-p"'
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' to specify the desired pid'.format(" ".join(pids)))
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namespace.pid = pids[0]
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def cb_guest_to_pid(option, opt, val, parser):
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argparser = argparse.ArgumentParser(description=description_text,
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try:
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formatter_class=argparse
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pids = Tui.get_pid_from_gname(val)
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.RawTextHelpFormatter)
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except:
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argparser.add_argument('-1', '--once', '--batch',
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sys.exit('Error while searching for guest "{}". Use "-p" to '
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action='store_true',
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'specify a pid instead?'.format(val))
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default=False,
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if len(pids) == 0:
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help='run in batch mode for one second',
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sys.exit('Error: No guest by the name "{}" found'.format(val))
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)
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if len(pids) > 1:
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argparser.add_argument('-d', '--debugfs',
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sys.exit('Error: Multiple processes found (pids: {}). Use "-p" '
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action='store_true',
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'to specify the desired pid'.format(" ".join(pids)))
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default=False,
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parser.values.pid = pids[0]
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help='retrieve statistics from debugfs',
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)
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optparser = optparse.OptionParser(description=description_text,
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argparser.add_argument('-f', '--fields',
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formatter=PlainHelpFormatter())
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default='',
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optparser.add_option('-1', '--once', '--batch',
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help='''fields to display (regex)
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action='store_true',
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"-f help" for a list of available events''',
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default=False,
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)
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dest='once',
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argparser.add_argument('-g', '--guest',
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help='run in batch mode for one second',
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type=str,
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)
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help='restrict statistics to guest by name',
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optparser.add_option('-i', '--debugfs-include-past',
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action=Guest_to_pid,
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action='store_true',
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)
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default=False,
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argparser.add_argument('-i', '--debugfs-include-past',
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dest='dbgfs_include_past',
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action='store_true',
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help='include all available data on past events for '
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default=False,
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'debugfs',
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help='include all available data on past events for'
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)
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' debugfs',
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optparser.add_option('-l', '--log',
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)
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action='store_true',
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argparser.add_argument('-l', '--log',
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default=False,
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action='store_true',
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dest='log',
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default=False,
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help='run in logging mode (like vmstat)',
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help='run in logging mode (like vmstat)',
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)
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)
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optparser.add_option('-t', '--tracepoints',
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argparser.add_argument('-p', '--pid',
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action='store_true',
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type=int,
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default=False,
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default=0,
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dest='tracepoints',
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help='restrict statistics to pid',
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help='retrieve statistics from tracepoints',
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)
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)
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argparser.add_argument('-t', '--tracepoints',
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optparser.add_option('-d', '--debugfs',
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action='store_true',
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action='store_true',
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default=False,
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default=False,
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help='retrieve statistics from tracepoints',
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dest='debugfs',
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)
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help='retrieve statistics from debugfs',
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options = argparser.parse_args()
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)
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optparser.add_option('-f', '--fields',
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action='store',
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default='',
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dest='fields',
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help='''fields to display (regex)
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"-f help" for a list of available events''',
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)
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optparser.add_option('-p', '--pid',
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action='store',
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default=0,
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type='int',
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dest='pid',
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help='restrict statistics to pid',
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)
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optparser.add_option('-g', '--guest',
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action='callback',
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type='string',
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dest='pid',
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metavar='GUEST',
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help='restrict statistics to guest by name',
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callback=cb_guest_to_pid,
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)
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options, unkn = optparser.parse_args(sys.argv)
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if len(unkn) != 1:
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sys.exit('Error: Extra argument(s): ' + ' '.join(unkn[1:]))
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try:
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try:
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# verify that we were passed a valid regex up front
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# verify that we were passed a valid regex up front
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re.compile(options.fields)
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re.compile(options.fields)
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