glances.outputs.glances_bottle.GlancesBottle.__init__() - Code Metrics - Inspection of "Update release note for Glances 3.2.5" - nicolargo/glances - Measure and Improve Code Quality continuously with Scrutinizer

Test Failed

Push — master ( 7e7379...128504 )

by Nicolas

created 2022-04-10 14:14 UTC

GlancesBottle.init() A

↳ Parent: glances.outputs.glances_bottle

Complexity

Conditions

Size

Total Lines	37
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
eloc	14
nop	3
dl	0
loc	37
rs	9.7
c	0
b	0
f	0

# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# Copyright (C) 2022 Nicolargo <[email protected]>
#
# Glances 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 3 of the License, or
# (at your option) any later version.
#
# Glances 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 1for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

"""Web interface class."""

import json
import os
import sys
import tempfile
from io import open
import webbrowser
import zlib
import socket

from glances.compat import b
from glances.timer import Timer
from glances.logger import logger

try:
    from bottle import Bottle, static_file, abort, response, request, auth_basic, template, TEMPLATE_PATH
except ImportError:
    logger.critical('Bottle module not found. Glances cannot start in web server mode.')
    sys.exit(2)


def compress(func):
    """Compress result with deflate algorithm if the client ask for it."""

    def wrapper(*args, **kwargs):
        """Wrapper that take one function and return the compressed result."""
        ret = func(*args, **kwargs)
        logger.debug(
            'Receive {} {} request with header: {}'.format(
                request.method,
                request.url,
                ['{}: {}'.format(h, request.headers.get(h)) for h in request.headers.keys()],
            )
        )
        if 'deflate' in request.headers.get('Accept-Encoding', ''):
            response.headers['Content-Encoding'] = 'deflate'
            ret = deflate_compress(ret)
        else:
            response.headers['Content-Encoding'] = 'identity'
        return ret

    def deflate_compress(data, compress_level=6):
        """Compress given data using the DEFLATE algorithm"""
        # Init compression
        zobj = zlib.compressobj(
            compress_level, zlib.DEFLATED, zlib.MAX_WBITS, zlib.DEF_MEM_LEVEL, zlib.Z_DEFAULT_STRATEGY
        )

        # Return compressed object
        return zobj.compress(b(data)) + zobj.flush()

    return wrapper


class GlancesBottle(object):
    """This class manages the Bottle Web server."""

    API_VERSION = '3'

    def __init__(self, config=None, args=None):
        # Init config
        self.config = config

        # Init args
        self.args = args

        # Init stats
        # Will be updated within Bottle route
        self.stats = None

        # cached_time is the minimum time interval between stats updates
        # i.e. HTTP/RESTful calls will not retrieve updated info until the time
        # since last update is passed (will retrieve old cached info instead)
        self.timer = Timer(0)

        # Load configuration file
        self.load_config(config)

        # Set the bind URL
        self.bind_url = 'http://{}:{}/'.format(self.args.bind_address, self.args.port)

        # Init Bottle
        self._app = Bottle()
        # Enable CORS (issue #479)
        self._app.install(EnableCors())
        # Password
        if args.password != '':
            self._app.install(auth_basic(self.check_auth))
        # Define routes
        self._route()

        # Path where the statics files are stored
        self.STATIC_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'static/public')

        # Paths for templates
        TEMPLATE_PATH.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), 'static/templates'))

    def load_config(self, config):
        """Load the outputs section of the configuration file."""
        # Limit the number of processes to display in the WebUI
        if config is not None and config.has_section('outputs'):
            logger.debug('Read number of processes to display in the WebUI')
            n = config.get_value('outputs', 'max_processes_display', default=None)
            logger.debug('Number of processes to display in the WebUI: {}'.format(n))

    def __update__(self):
        # Never update more than 1 time per cached_time
        if self.timer.finished():
            self.stats.update()
            self.timer = Timer(self.args.cached_time)

    def app(self):
        return self._app()

    def check_auth(self, username, password):
        """Check if a username/password combination is valid."""
        if username == self.args.username:
            from glances.password import GlancesPassword

            pwd = GlancesPassword()
            return pwd.check_password(self.args.password, pwd.sha256_hash(password))
        else:
            return False

    def _route(self):
        """Define route."""
        # REST API
        self._app.route('/api/%s/status' % self.API_VERSION, method="GET", callback=self._api_status)
        self._app.route('/api/%s/config' % self.API_VERSION, method="GET", callback=self._api_config)
        self._app.route('/api/%s/config/<item>' % self.API_VERSION, method="GET", callback=self._api_config_item)
        self._app.route('/api/%s/args' % self.API_VERSION, method="GET", callback=self._api_args)
        self._app.route('/api/%s/args/<item>' % self.API_VERSION, method="GET", callback=self._api_args_item)
        self._app.route('/api/%s/help' % self.API_VERSION, method="GET", callback=self._api_help)
        self._app.route('/api/%s/pluginslist' % self.API_VERSION, method="GET", callback=self._api_plugins)
        self._app.route('/api/%s/all' % self.API_VERSION, method="GET", callback=self._api_all)
        self._app.route('/api/%s/all/limits' % self.API_VERSION, method="GET", callback=self._api_all_limits)
        self._app.route('/api/%s/all/views' % self.API_VERSION, method="GET", callback=self._api_all_views)
        self._app.route('/api/%s/<plugin>' % self.API_VERSION, method="GET", callback=self._api)
        self._app.route('/api/%s/<plugin>/history' % self.API_VERSION, method="GET", callback=self._api_history)
        self._app.route(
            '/api/%s/<plugin>/history/<nb:int>' % self.API_VERSION, method="GET", callback=self._api_history
        )
        self._app.route('/api/%s/<plugin>/limits' % self.API_VERSION, method="GET", callback=self._api_limits)
        self._app.route('/api/%s/<plugin>/views' % self.API_VERSION, method="GET", callback=self._api_views)
        self._app.route('/api/%s/<plugin>/<item>' % self.API_VERSION, method="GET", callback=self._api_item)
        self._app.route(
            '/api/%s/<plugin>/<item>/history' % self.API_VERSION, method="GET", callback=self._api_item_history
        )
        self._app.route(
            '/api/%s/<plugin>/<item>/history/<nb:int>' % self.API_VERSION, method="GET", callback=self._api_item_history
        )
        self._app.route('/api/%s/<plugin>/<item>/<value>' % self.API_VERSION, method="GET", callback=self._api_value)
        bindmsg = 'Glances RESTful API Server started on {}api/{}/'.format(self.bind_url, self.API_VERSION)
        logger.info(bindmsg)

        # WEB UI
        if not self.args.disable_webui:
            self._app.route('/', method="GET", callback=self._index)
            self._app.route('/<refresh_time:int>', method=["GET"], callback=self._index)
            self._app.route('/<filepath:path>', method="GET", callback=self._resource)
            bindmsg = 'Glances Web User Interface started on {}'.format(self.bind_url)
            logger.info(bindmsg)
        else:
            logger.info('The WebUI is disable (--disable-webui)')

        print(bindmsg)

    def start(self, stats):
        """Start the bottle."""
        # Init stats
        self.stats = stats

        # Init plugin list
        self.plugins_list = self.stats.getPluginsList()

        # Bind the Bottle TCP address/port
        if self.args.open_web_browser:
            # Implementation of the issue #946
            # Try to open the Glances Web UI in the default Web browser if:
            # 1) --open-web-browser option is used
            # 2) Glances standalone mode is running on Windows OS
            webbrowser.open(self.bind_url, new=2, autoraise=1)

        try:
            self._app.run(host=self.args.bind_address, port=self.args.port, quiet=not self.args.debug)
        except socket.error as e:
            logger.critical('Error: Can not ran Glances Web server ({})'.format(e))

    def end(self):
        """End the bottle."""
        pass

    def _index(self, refresh_time=None):
        """Bottle callback for index.html (/) file."""

        if refresh_time is None or refresh_time < 1:
            refresh_time = int(self.args.time)

        # Update the stat
        self.__update__()

        # Display
        return template("index.html", refresh_time=refresh_time)

    def _resource(self, filepath):
        """Bottle callback for resources files."""
        # Return the static file
        return static_file(filepath, root=self.STATIC_PATH)

    @compress
    def _api_status(self):
        """Glances API RESTful implementation.

        Return a 200 status code.
        This entry point should be used to check the API health.

        See related issue:  Web server health check endpoint #1988
        """
        response.status = 200

        return None

    @compress
    def _api_help(self):
        """Glances API RESTful implementation.

        Return the help data or 404 error.
        """
        response.content_type = 'application/json; charset=utf-8'

        # Update the stat
        view_data = self.stats.get_plugin("help").get_view_data()
        try:
            plist = json.dumps(view_data, sort_keys=True)
        except Exception as e:
            abort(404, "Cannot get help view data (%s)" % str(e))
        return plist

    @compress
    def _api_plugins(self):
        """Glances API RESTFul implementation.

        @api {get} /api/%s/pluginslist Get plugins list
        @apiVersion 2.0
        @apiName pluginslist
        @apiGroup plugin

        @apiSuccess {String[]} Plugins list.

        @apiSuccessExample Success-Response:
            HTTP/1.1 200 OK
            [
               "load",
               "help",
               "ip",
               "memswap",
               "processlist",
               ...
            ]

         @apiError Cannot get plugin list.

         @apiErrorExample Error-Response:
            HTTP/1.1 404 Not Found
        """
        response.content_type = 'application/json; charset=utf-8'

        # Update the stat
        self.__update__()

        try:
            plist = json.dumps(self.plugins_list)
        except Exception as e:
            abort(404, "Cannot get plugin list (%s)" % str(e))
        return plist

    @compress
    def _api_all(self):
        """Glances API RESTful implementation.

        Return the JSON representation of all the plugins
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        if self.args.debug:
            fname = os.path.join(tempfile.gettempdir(), 'glances-debug.json')
            try:
                with open(fname) as f:
                    return f.read()
            except IOError:
                logger.debug("Debug file (%s) not found" % fname)

        # Update the stat
        self.__update__()

        try:
            # Get the JSON value of the stat ID
            statval = json.dumps(self.stats.getAllAsDict())
        except Exception as e:
            abort(404, "Cannot get stats (%s)" % str(e))

        return statval

    @compress
    def _api_all_limits(self):
        """Glances API RESTful implementation.

        Return the JSON representation of all the plugins limits
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        try:
            # Get the JSON value of the stat limits
            limits = json.dumps(self.stats.getAllLimitsAsDict())
        except Exception as e:
            abort(404, "Cannot get limits (%s)" % (str(e)))
        return limits

    @compress
    def _api_all_views(self):
        """Glances API RESTful implementation.

        Return the JSON representation of all the plugins views
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        try:
            # Get the JSON value of the stat view
            limits = json.dumps(self.stats.getAllViewsAsDict())
        except Exception as e:
            abort(404, "Cannot get views (%s)" % (str(e)))
        return limits

    @compress
    def _api(self, plugin):
        """Glances API RESTful implementation.

        Return the JSON representation of a given plugin
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        if plugin not in self.plugins_list:
            abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))

        # Update the stat
        self.__update__()

        try:
            # Get the JSON value of the stat ID
            statval = self.stats.get_plugin(plugin).get_stats()
        except Exception as e:
            abort(404, "Cannot get plugin %s (%s)" % (plugin, str(e)))

        return statval

    @compress
    def _api_history(self, plugin, nb=0):
        """Glances API RESTful implementation.

        Return the JSON representation of a given plugin history
        Limit to the last nb items (all if nb=0)
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        if plugin not in self.plugins_list:
            abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))

        # Update the stat
        self.__update__()

        try:
            # Get the JSON value of the stat ID
            statval = self.stats.get_plugin(plugin).get_stats_history(nb=int(nb))
        except Exception as e:
            abort(404, "Cannot get plugin history %s (%s)" % (plugin, str(e)))
        return statval

    @compress
    def _api_limits(self, plugin):
        """Glances API RESTful implementation.

        Return the JSON limits of a given plugin
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        if plugin not in self.plugins_list:
            abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))

        # Update the stat
        # self.__update__()

        try:
            # Get the JSON value of the stat limits
            ret = self.stats.get_plugin(plugin).limits
        except Exception as e:
            abort(404, "Cannot get limits for plugin %s (%s)" % (plugin, str(e)))
        return ret

    @compress
    def _api_views(self, plugin):
        """Glances API RESTful implementation.

        Return the JSON views of a given plugin
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        if plugin not in self.plugins_list:
            abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))

        # Update the stat
        # self.__update__()

        try:
            # Get the JSON value of the stat views
            ret = self.stats.get_plugin(plugin).get_views()
        except Exception as e:
            abort(404, "Cannot get views for plugin %s (%s)" % (plugin, str(e)))
        return ret

    # No compression see issue #1228
    # @compress
    def _api_itemvalue(self, plugin, item, value=None, history=False, nb=0):
        """Father method for _api_item and _api_value."""
        response.content_type = 'application/json; charset=utf-8'

        if plugin not in self.plugins_list:
            abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))

        # Update the stat
        self.__update__()

        if value is None:
            if history:
                ret = self.stats.get_plugin(plugin).get_stats_history(item, nb=int(nb))
            else:
                ret = self.stats.get_plugin(plugin).get_stats_item(item)

            if ret is None:
                abort(404, "Cannot get item %s%s in plugin %s" % (item, 'history ' if history else '', plugin))
        else:
            if history:
                # Not available
                ret = None
            else:
                ret = self.stats.get_plugin(plugin).get_stats_value(item, value)

            if ret is None:
                abort(
                    404, "Cannot get item %s(%s=%s) in plugin %s" % ('history ' if history else '', item, value, plugin)
                )

        return ret

    @compress
    def _api_item(self, plugin, item):
        """Glances API RESTful implementation.

        Return the JSON representation of the couple plugin/item
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error

        """
        return self._api_itemvalue(plugin, item)

    @compress
    def _api_item_history(self, plugin, item, nb=0):
        """Glances API RESTful implementation.

        Return the JSON representation of the couple plugin/history of item
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error

        """
        return self._api_itemvalue(plugin, item, history=True, nb=int(nb))

    @compress
    def _api_value(self, plugin, item, value):
        """Glances API RESTful implementation.

        Return the process stats (dict) for the given item=value
        HTTP/200 if OK
        HTTP/400 if plugin is not found
        HTTP/404 if others error
        """
        return self._api_itemvalue(plugin, item, value)

    @compress
    def _api_config(self):
        """Glances API RESTful implementation.

        Return the JSON representation of the Glances configuration file
        HTTP/200 if OK
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        try:
            # Get the JSON value of the config' dict
            args_json = json.dumps(self.config.as_dict())
        except Exception as e:
            abort(404, "Cannot get config (%s)" % str(e))
        return args_json

    @compress
    def _api_config_item(self, item):
        """Glances API RESTful implementation.

        Return the JSON representation of the Glances configuration item
        HTTP/200 if OK
        HTTP/400 if item is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        config_dict = self.config.as_dict()
        if item not in config_dict:
            abort(400, "Unknown configuration item %s" % item)

        try:
            # Get the JSON value of the config' dict
            args_json = json.dumps(config_dict[item])
        except Exception as e:
            abort(404, "Cannot get config item (%s)" % str(e))
        return args_json

    @compress
    def _api_args(self):
        """Glances API RESTful implementation.

        Return the JSON representation of the Glances command line arguments
        HTTP/200 if OK
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        try:
            # Get the JSON value of the args' dict
            # Use vars to convert namespace to dict
            # Source: https://docs.python.org/%s/library/functions.html#vars
            args_json = json.dumps(vars(self.args))
        except Exception as e:
            abort(404, "Cannot get args (%s)" % str(e))
        return args_json

    @compress
    def _api_args_item(self, item):
        """Glances API RESTful implementation.

        Return the JSON representation of the Glances command line arguments item
        HTTP/200 if OK
        HTTP/400 if item is not found
        HTTP/404 if others error
        """
        response.content_type = 'application/json; charset=utf-8'

        if item not in self.args:
            abort(400, "Unknown argument item %s" % item)

        try:
            # Get the JSON value of the args' dict
            # Use vars to convert namespace to dict
            # Source: https://docs.python.org/%s/library/functions.html#vars
            args_json = json.dumps(vars(self.args)[item])
        except Exception as e:
            abort(404, "Cannot get args item (%s)" % str(e))
        return args_json


class EnableCors(object):
    name = 'enable_cors'
    api = 2

    def apply(self, fn, context):
        def _enable_cors(*args, **kwargs):
            # set CORS headers
            response.headers['Access-Control-Allow-Origin'] = '*'
            response.headers['Access-Control-Allow-Methods'] = 'GET, POST, PUT, OPTIONS'
            response.headers[
                'Access-Control-Allow-Headers'
            ] = 'Origin, Accept, Content-Type, X-Requested-With, X-CSRF-Token'

            if request.method != 'OPTIONS':
                # actual request; reply with the actual response
                return fn(*args, **kwargs)

        return _enable_cors


1			# -- coding: utf-8 --
2			#
3			# This file is part of Glances.
4			#
5			# Copyright (C) 2022 Nicolargo <[email protected]>
6			#
7			# Glances is free software; you can redistribute it and/or modify
8			# it under the terms of the GNU Lesser General Public License as published by
9			# the Free Software Foundation, either version 3 of the License, or
10			# (at your option) any later version.
11			#
12			# Glances is distributed in the hope that it will be useful,
13			# but WITHOUT ANY WARRANTY; without even the implied warranty of
14			# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			# GNU Lesser General Public License 1for more details.
16			#
17			# You should have received a copy of the GNU Lesser General Public License
18			# along with this program. If not, see <http://www.gnu.org/licenses/>.
19
20			"""Web interface class."""
21
22			import json
23			import os
24			import sys
25			import tempfile
26			from io import open
27			import webbrowser
28			import zlib
29			import socket
30
31			from glances.compat import b
32			from glances.timer import Timer
33			from glances.logger import logger
34
35			try:
36			from bottle import Bottle, static_file, abort, response, request, auth_basic, template, TEMPLATE_PATH
37			except ImportError:
38			logger.critical('Bottle module not found. Glances cannot start in web server mode.')
39			sys.exit(2)
40
41
42			def compress(func):
43			"""Compress result with deflate algorithm if the client ask for it."""
44
45			def wrapper(args, *kwargs):
46			"""Wrapper that take one function and return the compressed result."""
47			ret = func(args, *kwargs)
48			logger.debug(
49			'Receive {} {} request with header: {}'.format(
50			request.method,
51			request.url,
52			['{}: {}'.format(h, request.headers.get(h)) for h in request.headers.keys()],
53			)
54			)
55			if 'deflate' in request.headers.get('Accept-Encoding', ''):
56			response.headers['Content-Encoding'] = 'deflate'
57			ret = deflate_compress(ret)
58			else:
59			response.headers['Content-Encoding'] = 'identity'
60			return ret
61
62			def deflate_compress(data, compress_level=6):
63			"""Compress given data using the DEFLATE algorithm"""
64			# Init compression
65			zobj = zlib.compressobj(
66			compress_level, zlib.DEFLATED, zlib.MAX_WBITS, zlib.DEF_MEM_LEVEL, zlib.Z_DEFAULT_STRATEGY
67			)
68
69			# Return compressed object
70			return zobj.compress(b(data)) + zobj.flush()
71
72			return wrapper
73
74
75			class GlancesBottle(object):
76			"""This class manages the Bottle Web server."""
77
78			API_VERSION = '3'
79
80			def __init__(self, config=None, args=None):
81			# Init config
82			self.config = config
83
84			# Init args
85			self.args = args
86
87			# Init stats
88			# Will be updated within Bottle route
89			self.stats = None
90
91			# cached_time is the minimum time interval between stats updates
92			# i.e. HTTP/RESTful calls will not retrieve updated info until the time
93			# since last update is passed (will retrieve old cached info instead)
94			self.timer = Timer(0)
95
96			# Load configuration file
97			self.load_config(config)
98
99			# Set the bind URL
100			self.bind_url = 'http://{}:{}/'.format(self.args.bind_address, self.args.port)
101
102			# Init Bottle
103			self._app = Bottle()
104			# Enable CORS (issue #479)
105			self._app.install(EnableCors())
106			# Password
107			if args.password != '':
108			self._app.install(auth_basic(self.check_auth))
109			# Define routes
110			self._route()
111
112			# Path where the statics files are stored
113			self.STATIC_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), 'static/public')
114
115			# Paths for templates
116			TEMPLATE_PATH.insert(0, os.path.join(os.path.dirname(os.path.realpath(__file__)), 'static/templates'))
117
118			def load_config(self, config):
119			"""Load the outputs section of the configuration file."""
120			# Limit the number of processes to display in the WebUI
121			if config is not None and config.has_section('outputs'):
122			logger.debug('Read number of processes to display in the WebUI')
123			n = config.get_value('outputs', 'max_processes_display', default=None)
124			logger.debug('Number of processes to display in the WebUI: {}'.format(n))
125
126			def __update__(self):
127			# Never update more than 1 time per cached_time
128			if self.timer.finished():
129			self.stats.update()
130			self.timer = Timer(self.args.cached_time)
131
132			def app(self):
133			return self._app()
134
135			def check_auth(self, username, password):
136			"""Check if a username/password combination is valid."""
137			if username == self.args.username:
138			from glances.password import GlancesPassword
139
140			pwd = GlancesPassword()
141			return pwd.check_password(self.args.password, pwd.sha256_hash(password))
142			else:
143			return False
144
145			def _route(self):
146			"""Define route."""
147			# REST API
148			self._app.route('/api/%s/status' % self.API_VERSION, method="GET", callback=self._api_status)
149			self._app.route('/api/%s/config' % self.API_VERSION, method="GET", callback=self._api_config)
150			self._app.route('/api/%s/config/<item>' % self.API_VERSION, method="GET", callback=self._api_config_item)
151			self._app.route('/api/%s/args' % self.API_VERSION, method="GET", callback=self._api_args)
152			self._app.route('/api/%s/args/<item>' % self.API_VERSION, method="GET", callback=self._api_args_item)
153			self._app.route('/api/%s/help' % self.API_VERSION, method="GET", callback=self._api_help)
154			self._app.route('/api/%s/pluginslist' % self.API_VERSION, method="GET", callback=self._api_plugins)
155			self._app.route('/api/%s/all' % self.API_VERSION, method="GET", callback=self._api_all)
156			self._app.route('/api/%s/all/limits' % self.API_VERSION, method="GET", callback=self._api_all_limits)
157			self._app.route('/api/%s/all/views' % self.API_VERSION, method="GET", callback=self._api_all_views)
158			self._app.route('/api/%s/<plugin>' % self.API_VERSION, method="GET", callback=self._api)
159			self._app.route('/api/%s/<plugin>/history' % self.API_VERSION, method="GET", callback=self._api_history)
160			self._app.route(
161			'/api/%s/<plugin>/history/<nb:int>' % self.API_VERSION, method="GET", callback=self._api_history
162			)
163			self._app.route('/api/%s/<plugin>/limits' % self.API_VERSION, method="GET", callback=self._api_limits)
164			self._app.route('/api/%s/<plugin>/views' % self.API_VERSION, method="GET", callback=self._api_views)
165			self._app.route('/api/%s/<plugin>/<item>' % self.API_VERSION, method="GET", callback=self._api_item)
166			self._app.route(
167			'/api/%s/<plugin>/<item>/history' % self.API_VERSION, method="GET", callback=self._api_item_history
168			)
169			self._app.route(
170			'/api/%s/<plugin>/<item>/history/<nb:int>' % self.API_VERSION, method="GET", callback=self._api_item_history
171			)
172			self._app.route('/api/%s/<plugin>/<item>/<value>' % self.API_VERSION, method="GET", callback=self._api_value)
173			bindmsg = 'Glances RESTful API Server started on {}api/{}/'.format(self.bind_url, self.API_VERSION)
174			logger.info(bindmsg)
175
176			# WEB UI
177			if not self.args.disable_webui:
178			self._app.route('/', method="GET", callback=self._index)
179			self._app.route('/<refresh_time:int>', method=["GET"], callback=self._index)
180			self._app.route('/<filepath:path>', method="GET", callback=self._resource)
181			bindmsg = 'Glances Web User Interface started on {}'.format(self.bind_url)
182			logger.info(bindmsg)
183			else:
184			logger.info('The WebUI is disable (--disable-webui)')
185
186			print(bindmsg)
187
188			def start(self, stats):
189			"""Start the bottle."""
190			# Init stats
191			self.stats = stats
192
193			# Init plugin list
194			self.plugins_list = self.stats.getPluginsList()
195
196			# Bind the Bottle TCP address/port
197			if self.args.open_web_browser:
198			# Implementation of the issue #946
199			# Try to open the Glances Web UI in the default Web browser if:
200			# 1) --open-web-browser option is used
201			# 2) Glances standalone mode is running on Windows OS
202			webbrowser.open(self.bind_url, new=2, autoraise=1)
203
204			try:
205			self._app.run(host=self.args.bind_address, port=self.args.port, quiet=not self.args.debug)
206			except socket.error as e:
207			logger.critical('Error: Can not ran Glances Web server ({})'.format(e))
208
209			def end(self):
210			"""End the bottle."""
211			pass
212
213			def _index(self, refresh_time=None):
214			"""Bottle callback for index.html (/) file."""
215
216			if refresh_time is None or refresh_time < 1:
217			refresh_time = int(self.args.time)
218
219			# Update the stat
220			self.__update__()
221
222			# Display
223			return template("index.html", refresh_time=refresh_time)
224
225			def _resource(self, filepath):
226			"""Bottle callback for resources files."""
227			# Return the static file
228			return static_file(filepath, root=self.STATIC_PATH)
229
230			@compress
231			def _api_status(self):
232			"""Glances API RESTful implementation.
233
234			Return a 200 status code.
235			This entry point should be used to check the API health.
236
237			See related issue: Web server health check endpoint #1988
238			"""
239			response.status = 200
240
241			return None
242
243			@compress
244			def _api_help(self):
245			"""Glances API RESTful implementation.
246
247			Return the help data or 404 error.
248			"""
249			response.content_type = 'application/json; charset=utf-8'
250
251			# Update the stat
252			view_data = self.stats.get_plugin("help").get_view_data()
253			try:
254			plist = json.dumps(view_data, sort_keys=True)
255			except Exception as e:
256			abort(404, "Cannot get help view data (%s)" % str(e))
257			return plist
258
259			@compress
260			def _api_plugins(self):
261			"""Glances API RESTFul implementation.
262
263			@api {get} /api/%s/pluginslist Get plugins list
264			@apiVersion 2.0
265			@apiName pluginslist
266			@apiGroup plugin
267
268			@apiSuccess {String[]} Plugins list.
269
270			@apiSuccessExample Success-Response:
271			HTTP/1.1 200 OK
272			[
273			"load",
274			"help",
275			"ip",
276			"memswap",
277			"processlist",
278			...
279			]
280
281			@apiError Cannot get plugin list.
282
283			@apiErrorExample Error-Response:
284			HTTP/1.1 404 Not Found
285			"""
286			response.content_type = 'application/json; charset=utf-8'
287
288			# Update the stat
289			self.__update__()
290
291			try:
292			plist = json.dumps(self.plugins_list)
293			except Exception as e:
294			abort(404, "Cannot get plugin list (%s)" % str(e))
295			return plist
296
297			@compress
298			def _api_all(self):
299			"""Glances API RESTful implementation.
300
301			Return the JSON representation of all the plugins
302			HTTP/200 if OK
303			HTTP/400 if plugin is not found
304			HTTP/404 if others error
305			"""
306			response.content_type = 'application/json; charset=utf-8'
307
308			if self.args.debug:
309			fname = os.path.join(tempfile.gettempdir(), 'glances-debug.json')
310			try:
311			with open(fname) as f:
312			return f.read()
313			except IOError:
314			logger.debug("Debug file (%s) not found" % fname)
315
316			# Update the stat
317			self.__update__()
318
319			try:
320			# Get the JSON value of the stat ID
321			statval = json.dumps(self.stats.getAllAsDict())
322			except Exception as e:
323			abort(404, "Cannot get stats (%s)" % str(e))
324
325			return statval
326
327			@compress
328			def _api_all_limits(self):
329			"""Glances API RESTful implementation.
330
331			Return the JSON representation of all the plugins limits
332			HTTP/200 if OK
333			HTTP/400 if plugin is not found
334			HTTP/404 if others error
335			"""
336			response.content_type = 'application/json; charset=utf-8'
337
338			try:
339			# Get the JSON value of the stat limits
340			limits = json.dumps(self.stats.getAllLimitsAsDict())
341			except Exception as e:
342			abort(404, "Cannot get limits (%s)" % (str(e)))
343			return limits
344
345			@compress
346			def _api_all_views(self):
347			"""Glances API RESTful implementation.
348
349			Return the JSON representation of all the plugins views
350			HTTP/200 if OK
351			HTTP/400 if plugin is not found
352			HTTP/404 if others error
353			"""
354			response.content_type = 'application/json; charset=utf-8'
355
356			try:
357			# Get the JSON value of the stat view
358			limits = json.dumps(self.stats.getAllViewsAsDict())
359			except Exception as e:
360			abort(404, "Cannot get views (%s)" % (str(e)))
361			return limits
362
363			@compress
364			def _api(self, plugin):
365			"""Glances API RESTful implementation.
366
367			Return the JSON representation of a given plugin
368			HTTP/200 if OK
369			HTTP/400 if plugin is not found
370			HTTP/404 if others error
371			"""
372			response.content_type = 'application/json; charset=utf-8'
373
374			if plugin not in self.plugins_list:
375			abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))
376
377			# Update the stat
378			self.__update__()
379
380			try:
381			# Get the JSON value of the stat ID
382			statval = self.stats.get_plugin(plugin).get_stats()
383			except Exception as e:
384			abort(404, "Cannot get plugin %s (%s)" % (plugin, str(e)))
385
386			return statval
387
388			@compress
389			def _api_history(self, plugin, nb=0):
390			"""Glances API RESTful implementation.
391
392			Return the JSON representation of a given plugin history
393			Limit to the last nb items (all if nb=0)
394			HTTP/200 if OK
395			HTTP/400 if plugin is not found
396			HTTP/404 if others error
397			"""
398			response.content_type = 'application/json; charset=utf-8'
399
400			if plugin not in self.plugins_list:
401			abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))
402
403			# Update the stat
404			self.__update__()
405
406			try:
407			# Get the JSON value of the stat ID
408			statval = self.stats.get_plugin(plugin).get_stats_history(nb=int(nb))
409			except Exception as e:
410			abort(404, "Cannot get plugin history %s (%s)" % (plugin, str(e)))
411			return statval
412
413			@compress
414			def _api_limits(self, plugin):
415			"""Glances API RESTful implementation.
416
417			Return the JSON limits of a given plugin
418			HTTP/200 if OK
419			HTTP/400 if plugin is not found
420			HTTP/404 if others error
421			"""
422			response.content_type = 'application/json; charset=utf-8'
423
424			if plugin not in self.plugins_list:
425			abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))
426
427			# Update the stat
428			# self.__update__()
429
430			try:
431			# Get the JSON value of the stat limits
432			ret = self.stats.get_plugin(plugin).limits
433			except Exception as e:
434			abort(404, "Cannot get limits for plugin %s (%s)" % (plugin, str(e)))
435			return ret
436
437			@compress
438			def _api_views(self, plugin):
439			"""Glances API RESTful implementation.
440
441			Return the JSON views of a given plugin
442			HTTP/200 if OK
443			HTTP/400 if plugin is not found
444			HTTP/404 if others error
445			"""
446			response.content_type = 'application/json; charset=utf-8'
447
448			if plugin not in self.plugins_list:
449			abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))
450
451			# Update the stat
452			# self.__update__()
453
454			try:
455			# Get the JSON value of the stat views
456			ret = self.stats.get_plugin(plugin).get_views()
457			except Exception as e:
458			abort(404, "Cannot get views for plugin %s (%s)" % (plugin, str(e)))
459			return ret
460
461			# No compression see issue #1228
462			# @compress
463			def _api_itemvalue(self, plugin, item, value=None, history=False, nb=0):
464			"""Father method for _api_item and _api_value."""
465			response.content_type = 'application/json; charset=utf-8'
466
467			if plugin not in self.plugins_list:
468			abort(400, "Unknown plugin %s (available plugins: %s)" % (plugin, self.plugins_list))
469
470			# Update the stat
471			self.__update__()
472
473			if value is None:
474			if history:
475			ret = self.stats.get_plugin(plugin).get_stats_history(item, nb=int(nb))
476			else:
477			ret = self.stats.get_plugin(plugin).get_stats_item(item)
478
479			if ret is None:
480			abort(404, "Cannot get item %s%s in plugin %s" % (item, 'history ' if history else '', plugin))
481			else:
482			if history:
483			# Not available
484			ret = None
485			else:
486			ret = self.stats.get_plugin(plugin).get_stats_value(item, value)
487
488			if ret is None:
489			abort(
490			404, "Cannot get item %s(%s=%s) in plugin %s" % ('history ' if history else '', item, value, plugin)
491			)
492
493			return ret
494
495			@compress
496			def _api_item(self, plugin, item):
497			"""Glances API RESTful implementation.
498
499			Return the JSON representation of the couple plugin/item
500			HTTP/200 if OK
501			HTTP/400 if plugin is not found
502			HTTP/404 if others error
503
504			"""
505			return self._api_itemvalue(plugin, item)
506
507			@compress
508			def _api_item_history(self, plugin, item, nb=0):
509			"""Glances API RESTful implementation.
510
511			Return the JSON representation of the couple plugin/history of item
512			HTTP/200 if OK
513			HTTP/400 if plugin is not found
514			HTTP/404 if others error
515
516			"""
517			return self._api_itemvalue(plugin, item, history=True, nb=int(nb))
518
519			@compress
520			def _api_value(self, plugin, item, value):
521			"""Glances API RESTful implementation.
522
523			Return the process stats (dict) for the given item=value
524			HTTP/200 if OK
525			HTTP/400 if plugin is not found
526			HTTP/404 if others error
527			"""
528			return self._api_itemvalue(plugin, item, value)
529
530			@compress
531			def _api_config(self):
532			"""Glances API RESTful implementation.
533
534			Return the JSON representation of the Glances configuration file
535			HTTP/200 if OK
536			HTTP/404 if others error
537			"""
538			response.content_type = 'application/json; charset=utf-8'
539
540			try:
541			# Get the JSON value of the config' dict
542			args_json = json.dumps(self.config.as_dict())
543			except Exception as e:
544			abort(404, "Cannot get config (%s)" % str(e))
545			return args_json
546
547			@compress
548			def _api_config_item(self, item):
549			"""Glances API RESTful implementation.
550
551			Return the JSON representation of the Glances configuration item
552			HTTP/200 if OK
553			HTTP/400 if item is not found
554			HTTP/404 if others error
555			"""
556			response.content_type = 'application/json; charset=utf-8'
557
558			config_dict = self.config.as_dict()
559			if item not in config_dict:
560			abort(400, "Unknown configuration item %s" % item)
561
562			try:
563			# Get the JSON value of the config' dict
564			args_json = json.dumps(config_dict[item])
565			except Exception as e:
566			abort(404, "Cannot get config item (%s)" % str(e))
567			return args_json
568
569			@compress
570			def _api_args(self):
571			"""Glances API RESTful implementation.
572
573			Return the JSON representation of the Glances command line arguments
574			HTTP/200 if OK
575			HTTP/404 if others error
576			"""
577			response.content_type = 'application/json; charset=utf-8'
578
579			try:
580			# Get the JSON value of the args' dict
581			# Use vars to convert namespace to dict
582			# Source: https://docs.python.org/%s/library/functions.html#vars
583			args_json = json.dumps(vars(self.args))
584			except Exception as e:
585			abort(404, "Cannot get args (%s)" % str(e))
586			return args_json
587
588			@compress
589			def _api_args_item(self, item):
590			"""Glances API RESTful implementation.
591
592			Return the JSON representation of the Glances command line arguments item
593			HTTP/200 if OK
594			HTTP/400 if item is not found
595			HTTP/404 if others error
596			"""
597			response.content_type = 'application/json; charset=utf-8'
598
599			if item not in self.args:
600			abort(400, "Unknown argument item %s" % item)
601
602			try:
603			# Get the JSON value of the args' dict
604			# Use vars to convert namespace to dict
605			# Source: https://docs.python.org/%s/library/functions.html#vars
606			args_json = json.dumps(vars(self.args)[item])
607			except Exception as e:
608			abort(404, "Cannot get args item (%s)" % str(e))
609			return args_json
610
611
612			class EnableCors(object):
613			name = 'enable_cors'
614			api = 2
615
616			def apply(self, fn, context):
617			def _enable_cors(args, *kwargs):
618			# set CORS headers
619			response.headers['Access-Control-Allow-Origin'] = '*'
620			response.headers['Access-Control-Allow-Methods'] = 'GET, POST, PUT, OPTIONS'
621			response.headers[
622			'Access-Control-Allow-Headers'
623			] = 'Origin, Accept, Content-Type, X-Requested-With, X-CSRF-Token'
624
625			if request.method != 'OPTIONS':
626			# actual request; reply with the actual response
627			return fn(args, *kwargs)
628
629			return _enable_cors
630

nicolargo / glances

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