view sat_frontends/jp/cmd_debug.py @ 2766:93a421de0e3d

tools (common/data_objects): metadata parsing in BlogItems: metadata are parsed to deserialise some well known values like rsm index and count, and some properties have been added to have easier access. A "complete" property (or item in metadata) is set to True if we are on the last page, False if we are not, or None if we don't have enough data to know if we are on the last page or not.
author Goffi <goffi@goffi.org>
date Fri, 11 Jan 2019 16:35:13 +0100
parents 56f94936df1e
children 003b8b4b56a7
line wrap: on
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#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# jp: a SàT command line tool
# Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


import base
from sat.core.i18n import _
from sat_frontends.jp.constants import Const as C
from sat.tools.common.ansi import ANSI as A
import json

__commands__ = ["Debug"]


class BridgeCommon(object):
    def evalArgs(self):
        if self.args.arg:
            try:
                return eval(u"[{}]".format(u",".join(self.args.arg)))
            except SyntaxError as e:
                self.disp(
                    u"Can't evaluate arguments: {mess}\n{text}\n{offset}^".format(
                        mess=e, text=e.text.decode("utf-8"), offset=u" " * (e.offset - 1)
                    ),
                    error=True,
                )
                self.host.quit(C.EXIT_BAD_ARG)
        else:
            return []


class Method(base.CommandBase, BridgeCommon):
    def __init__(self, host):
        base.CommandBase.__init__(self, host, "method", help=_(u"call a bridge method"))
        BridgeCommon.__init__(self)
        self.need_loop = True

    def add_parser_options(self):
        self.parser.add_argument(
            "method", type=str, help=_(u"name of the method to execute")
        )
        self.parser.add_argument(
            "arg", type=base.unicode_decoder, nargs="*", help=_(u"argument of the method")
        )

    def method_cb(self, ret=None):
        if ret is not None:
            self.disp(unicode(ret))
        self.host.quit()

    def method_eb(self, failure):
        self.disp(
            _(u"Error while executing {}: {}".format(self.args.method, failure)),
            error=True,
        )
        self.host.quit(C.EXIT_ERROR)

    def start(self):
        method = getattr(self.host.bridge, self.args.method)
        args = self.evalArgs()
        try:
            method(
                *args,
                profile=self.profile,
                callback=self.method_cb,
                errback=self.method_eb
            )
        except TypeError:
            # maybe the method doesn't need a profile ?
            try:
                method(*args, callback=self.method_cb, errback=self.method_eb)
            except TypeError:
                self.method_eb(_(u"bad arguments"))


class Signal(base.CommandBase, BridgeCommon):
    def __init__(self, host):
        base.CommandBase.__init__(
            self, host, "signal", help=_(u"send a fake signal from backend")
        )
        BridgeCommon.__init__(self)

    def add_parser_options(self):
        self.parser.add_argument(
            "signal", type=str, help=_(u"name of the signal to send")
        )
        self.parser.add_argument(
            "arg", type=base.unicode_decoder, nargs="*", help=_(u"argument of the signal")
        )

    def start(self):
        args = self.evalArgs()
        json_args = json.dumps(args)
        # XXX: we use self.args.profile and not self.profile
        #      because we want the raw profile_key (so plugin handle C.PROF_KEY_NONE)
        self.host.bridge.debugFakeSignal(self.args.signal, json_args, self.args.profile)


class Bridge(base.CommandBase):
    subcommands = (Method, Signal)

    def __init__(self, host):
        super(Bridge, self).__init__(
            host, "bridge", use_profile=False, help=_("bridge s(t)imulation")
        )


class Monitor(base.CommandBase):
    def __init__(self, host):
        super(Monitor, self).__init__(
            host,
            "monitor",
            use_verbose=True,
            use_profile=False,
            use_output=C.OUTPUT_XML,
            help=_("monitor XML stream"),
        )
        self.need_loop = True

    def add_parser_options(self):
        self.parser.add_argument(
            "-d",
            "--direction",
            choices=("in", "out", "both"),
            default="both",
            help=_(u"stream direction filter"),
        )

    def printXML(self, direction, xml_data, profile):
        if self.args.direction == "in" and direction != "IN":
            return
        if self.args.direction == "out" and direction != "OUT":
            return
        verbosity = self.host.verbosity
        if not xml_data.strip():
            if verbosity <= 2:
                return
            whiteping = True
        else:
            whiteping = False

        if verbosity:
            profile_disp = u" ({})".format(profile) if verbosity > 1 else u""
            if direction == "IN":
                self.disp(
                    A.color(
                        A.BOLD, A.FG_YELLOW, "<<<===== IN ====", A.FG_WHITE, profile_disp
                    )
                )
            else:
                self.disp(
                    A.color(
                        A.BOLD, A.FG_CYAN, "==== OUT ====>>>", A.FG_WHITE, profile_disp
                    )
                )
        if whiteping:
            self.disp("[WHITESPACE PING]")
        else:
            try:
                self.output(xml_data)
            except Exception:
                #  initial stream is not valid XML,
                # in this case we print directly to data
                #  FIXME: we should test directly lxml.etree.XMLSyntaxError
                #        but importing lxml directly here is not clean
                #        should be wrapped in a custom Exception
                self.disp(xml_data)
                self.disp(u"")

    def start(self):
        self.host.bridge.register_signal("xmlLog", self.printXML, "plugin")


class Debug(base.CommandBase):
    subcommands = (Bridge, Monitor)

    def __init__(self, host):
        super(Debug, self).__init__(
            host, "debug", use_profile=False, help=_("debugging tools")
        )