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# -*- coding: utf-8 -*- |
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# |
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# This file is part of Glances. |
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# |
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# Copyright (C) 2017 Nicolargo <[email protected]> |
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# |
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# Glances is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU Lesser General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# Glances is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU Lesser General Public License for more details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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"""Docker plugin.""" |
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import os |
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import re |
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import threading |
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import time |
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from glances.compat import iterkeys, itervalues |
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from glances.logger import logger |
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from glances.timer import getTimeSinceLastUpdate |
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from glances.plugins.glances_plugin import GlancesPlugin |
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# Docker-py library (optional and Linux-only) |
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# https://github.com/docker/docker-py |
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try: |
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import docker |
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import requests |
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except ImportError as e: |
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logger.debug("Docker library not found (%s). Glances cannot grab Docker info." % e) |
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docker_tag = False |
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else: |
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docker_tag = True |
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class Plugin(GlancesPlugin): |
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"""Glances Docker plugin. |
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stats is a list |
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""" |
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def __init__(self, args=None): |
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"""Init the plugin.""" |
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super(Plugin, self).__init__(args=args) |
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# The plgin can be disable using: args.disable_docker |
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self.args = args |
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# We want to display the stat in the curse interface |
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self.display_curse = True |
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# Init the Docker API |
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self.docker_client = False |
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# Dict of thread (to grab stats asynchroniously, one thread is created by container) |
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# key: Container Id |
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# value: instance of ThreadDockerGrabber |
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self.thread_list = {} |
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# Init the stats |
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self.reset() |
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def exit(self): |
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"""Overwrite the exit method to close threads""" |
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for t in itervalues(self.thread_list): |
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t.stop() |
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# Call the father class |
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super(Plugin, self).exit() |
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def get_key(self): |
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"""Return the key of the list.""" |
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return 'name' |
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def get_export(self): |
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"""Overwrite the default export method. |
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- Only exports containers |
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- The key is the first container name |
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""" |
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ret = [] |
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try: |
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ret = self.stats['containers'] |
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except KeyError as e: |
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logger.debug("Docker export error {}".format(e)) |
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return ret |
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def __connect_old(self, version): |
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"""Connect to the Docker server with the 'old school' method""" |
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# Glances is compatible with both API 2.0 and <2.0 |
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# (thanks to the @bacondropped patch) |
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if hasattr(docker, 'APIClient'): |
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# Correct issue #1000 for API 2.0 |
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init_docker = docker.APIClient |
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elif hasattr(docker, 'Client'): |
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# < API 2.0 |
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init_docker = docker.Client |
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else: |
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# Can not found init method (new API version ?) |
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logger.error("Can not found any way to init the Docker API") |
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return None |
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# Init connection to the Docker API |
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try: |
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if version is None: |
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ret = init_docker(base_url='unix://var/run/docker.sock') |
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else: |
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ret = init_docker(base_url='unix://var/run/docker.sock', |
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version=version) |
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except NameError: |
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# docker lib not found |
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return None |
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return ret |
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def connect(self, version=None): |
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"""Connect to the Docker server.""" |
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if hasattr(docker, 'from_env') and version is not None: |
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# Connect to Docker using the default socket or |
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# the configuration in your environment |
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ret = docker.from_env() |
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else: |
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ret = self.__connect_old(version=version) |
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# Check the server connection with the version() method |
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try: |
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ret.version() |
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except requests.exceptions.ConnectionError as e: |
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# Connexion error (Docker not detected) |
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# Let this message in debug mode |
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logger.debug("Can't connect to the Docker server (%s)" % e) |
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return None |
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except docker.errors.APIError as e: |
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if version is None: |
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# API error (Version mismatch ?) |
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logger.debug("Docker API error (%s)" % e) |
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# Try the connection with the server version |
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version = re.search('(?:server API version|server)\:\ (.*)\)\".*\)', str(e)) |
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if version: |
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logger.debug("Try connection with Docker API version %s" % version.group(1)) |
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ret = self.connect(version=version.group(1)) |
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else: |
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logger.debug("Can not retreive Docker server version") |
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ret = None |
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else: |
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# API error |
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logger.error("Docker API error (%s)" % e) |
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ret = None |
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except Exception as e: |
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# Others exceptions... |
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# Connexion error (Docker not detected) |
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logger.error("Can't connect to the Docker server (%s)" % e) |
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ret = None |
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# Log an info if Docker plugin is disabled |
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if ret is None: |
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logger.debug("Docker plugin is disable because an error has been detected") |
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return ret |
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def reset(self): |
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"""Reset/init the stats.""" |
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self.stats = {} |
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@GlancesPlugin._check_decorator |
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@GlancesPlugin._log_result_decorator |
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def update(self): |
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"""Update Docker stats using the input method.""" |
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global docker_tag |
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# Reset stats |
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self.reset() |
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# Get the current Docker API client |
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if not self.docker_client: |
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# First time, try to connect to the server |
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try: |
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self.docker_client = self.connect() |
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except Exception: |
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docker_tag = False |
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else: |
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if self.docker_client is None: |
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docker_tag = False |
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# The Docker-py lib is mandatory |
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if not docker_tag: |
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return self.stats |
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if self.input_method == 'local': |
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# Update stats |
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# Docker version |
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# Exemple: { |
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# "KernelVersion": "3.16.4-tinycore64", |
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# "Arch": "amd64", |
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# "ApiVersion": "1.15", |
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# "Version": "1.3.0", |
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# "GitCommit": "c78088f", |
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# "Os": "linux", |
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# "GoVersion": "go1.3.3" |
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# } |
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try: |
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self.stats['version'] = self.docker_client.version() |
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except Exception as e: |
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# Correct issue#649 |
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logger.error("{} plugin - Cannot get Docker version ({})".format(self.plugin_name, e)) |
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return self.stats |
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# Container globals information |
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# Example: [{u'Status': u'Up 36 seconds', |
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# u'Created': 1420378904, |
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# u'Image': u'nginx:1', |
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# u'Ports': [{u'Type': u'tcp', u'PrivatePort': 443}, |
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# {u'IP': u'0.0.0.0', u'Type': u'tcp', u'PublicPort': 8080, u'PrivatePort': 80}], |
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# u'Command': u"nginx -g 'daemon off;'", |
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# u'Names': [u'/webstack_nginx_1'], |
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# u'Id': u'b0da859e84eb4019cf1d965b15e9323006e510352c402d2f442ea632d61faaa5'}] |
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# Update current containers list |
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try: |
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self.stats['containers'] = self.docker_client.containers() or [] |
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except Exception as e: |
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logger.error("{} plugin - Cannot get containers list ({})".format(self.plugin_name, e)) |
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return self.stats |
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# Start new thread for new container |
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for container in self.stats['containers']: |
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if container['Id'] not in self.thread_list: |
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# Thread did not exist in the internal dict |
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# Create it and add it to the internal dict |
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logger.debug("{} plugin - Create thread for container {}".format(self.plugin_name, container['Id'][:12])) |
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t = ThreadDockerGrabber(self.docker_client, container['Id']) |
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self.thread_list[container['Id']] = t |
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t.start() |
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# Stop threads for non-existing containers |
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nonexisting_containers = set(iterkeys(self.thread_list)) - set([c['Id'] for c in self.stats['containers']]) |
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for container_id in nonexisting_containers: |
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# Stop the thread |
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logger.debug("{} plugin - Stop thread for old container {}".format(self.plugin_name, container_id[:12])) |
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self.thread_list[container_id].stop() |
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# Delete the item from the dict |
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del self.thread_list[container_id] |
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# Get stats for all containers |
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for container in self.stats['containers']: |
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# The key is the container name and not the Id |
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container['key'] = self.get_key() |
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# Export name (first name in the list, without the /) |
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container['name'] = container['Names'][0][1:] |
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container['cpu'] = self.get_docker_cpu(container['Id'], self.thread_list[container['Id']].stats) |
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container['memory'] = self.get_docker_memory(container['Id'], self.thread_list[container['Id']].stats) |
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container['network'] = self.get_docker_network(container['Id'], self.thread_list[container['Id']].stats) |
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container['io'] = self.get_docker_io(container['Id'], self.thread_list[container['Id']].stats) |
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elif self.input_method == 'snmp': |
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# Update stats using SNMP |
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# Not available |
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pass |
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return self.stats |
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def get_docker_cpu(self, container_id, all_stats): |
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"""Return the container CPU usage. |
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Input: id is the full container id |
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all_stats is the output of the stats method of the Docker API |
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Output: a dict {'total': 1.49} |
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""" |
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cpu_new = {} |
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ret = {'total': 0.0} |
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# Read the stats |
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# For each container, you will find a pseudo-file cpuacct.stat, |
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# containing the CPU usage accumulated by the processes of the container. |
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# Those times are expressed in ticks of 1/USER_HZ of a second. |
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# On x86 systems, USER_HZ is 100. |
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try: |
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cpu_new['total'] = all_stats['cpu_stats']['cpu_usage']['total_usage'] |
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cpu_new['system'] = all_stats['cpu_stats']['system_cpu_usage'] |
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cpu_new['nb_core'] = len(all_stats['cpu_stats']['cpu_usage']['percpu_usage'] or []) |
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except KeyError as e: |
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# all_stats do not have CPU information |
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logger.debug("Cannot grab CPU usage for container {} ({})".format(container_id, e)) |
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logger.debug(all_stats) |
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else: |
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# Previous CPU stats stored in the cpu_old variable |
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if not hasattr(self, 'cpu_old'): |
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# First call, we init the cpu_old variable |
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self.cpu_old = {} |
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try: |
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self.cpu_old[container_id] = cpu_new |
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except (IOError, UnboundLocalError): |
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pass |
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if container_id not in self.cpu_old: |
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try: |
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self.cpu_old[container_id] = cpu_new |
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except (IOError, UnboundLocalError): |
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pass |
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else: |
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# |
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cpu_delta = float(cpu_new['total'] - self.cpu_old[container_id]['total']) |
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system_delta = float(cpu_new['system'] - self.cpu_old[container_id]['system']) |
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|
if cpu_delta > 0.0 and system_delta > 0.0: |
|
315
|
|
|
ret['total'] = (cpu_delta / system_delta) * float(cpu_new['nb_core']) * 100 |
|
316
|
|
|
|
|
317
|
|
|
# Save stats to compute next stats |
|
318
|
|
|
self.cpu_old[container_id] = cpu_new |
|
319
|
|
|
|
|
320
|
|
|
# Return the stats |
|
321
|
|
|
return ret |
|
322
|
|
|
|
|
323
|
|
|
def get_docker_memory(self, container_id, all_stats): |
|
324
|
|
|
"""Return the container MEMORY. |
|
325
|
|
|
|
|
326
|
|
|
Input: id is the full container id |
|
327
|
|
|
all_stats is the output of the stats method of the Docker API |
|
328
|
|
|
Output: a dict {'rss': 1015808, 'cache': 356352, 'usage': ..., 'max_usage': ...} |
|
329
|
|
|
""" |
|
330
|
|
|
ret = {} |
|
331
|
|
|
# Read the stats |
|
332
|
|
|
try: |
|
333
|
|
|
# Do not exist anymore with Docker 1.11 (issue #848) |
|
334
|
|
|
# ret['rss'] = all_stats['memory_stats']['stats']['rss'] |
|
335
|
|
|
# ret['cache'] = all_stats['memory_stats']['stats']['cache'] |
|
336
|
|
|
ret['usage'] = all_stats['memory_stats']['usage'] |
|
337
|
|
|
ret['limit'] = all_stats['memory_stats']['limit'] |
|
338
|
|
|
ret['max_usage'] = all_stats['memory_stats']['max_usage'] |
|
339
|
|
|
except (KeyError, TypeError) as e: |
|
340
|
|
|
# all_stats do not have MEM information |
|
341
|
|
|
logger.debug("Cannot grab MEM usage for container {} ({})".format(container_id, e)) |
|
342
|
|
|
logger.debug(all_stats) |
|
343
|
|
|
# Return the stats |
|
344
|
|
|
return ret |
|
345
|
|
|
|
|
346
|
|
|
def get_docker_network(self, container_id, all_stats): |
|
347
|
|
|
"""Return the container network usage using the Docker API (v1.0 or higher). |
|
348
|
|
|
|
|
349
|
|
|
Input: id is the full container id |
|
350
|
|
|
Output: a dict {'time_since_update': 3000, 'rx': 10, 'tx': 65}. |
|
351
|
|
|
with: |
|
352
|
|
|
time_since_update: number of seconds elapsed between the latest grab |
|
353
|
|
|
rx: Number of byte received |
|
354
|
|
|
tx: Number of byte transmited |
|
355
|
|
|
""" |
|
356
|
|
|
# Init the returned dict |
|
357
|
|
|
network_new = {} |
|
358
|
|
|
|
|
359
|
|
|
# Read the rx/tx stats (in bytes) |
|
360
|
|
|
try: |
|
361
|
|
|
netcounters = all_stats["networks"] |
|
362
|
|
|
except KeyError as e: |
|
363
|
|
|
# all_stats do not have NETWORK information |
|
364
|
|
|
logger.debug("Cannot grab NET usage for container {} ({})".format(container_id, e)) |
|
365
|
|
|
logger.debug(all_stats) |
|
366
|
|
|
# No fallback available... |
|
367
|
|
|
return network_new |
|
368
|
|
|
|
|
369
|
|
|
# Previous network interface stats are stored in the network_old variable |
|
370
|
|
|
if not hasattr(self, 'inetcounters_old'): |
|
371
|
|
|
# First call, we init the network_old var |
|
372
|
|
|
self.netcounters_old = {} |
|
373
|
|
|
try: |
|
374
|
|
|
self.netcounters_old[container_id] = netcounters |
|
375
|
|
|
except (IOError, UnboundLocalError): |
|
376
|
|
|
pass |
|
377
|
|
|
|
|
378
|
|
|
if container_id not in self.netcounters_old: |
|
379
|
|
|
try: |
|
380
|
|
|
self.netcounters_old[container_id] = netcounters |
|
381
|
|
|
except (IOError, UnboundLocalError): |
|
382
|
|
|
pass |
|
383
|
|
|
else: |
|
384
|
|
|
# By storing time data we enable Rx/s and Tx/s calculations in the |
|
385
|
|
|
# XML/RPC API, which would otherwise be overly difficult work |
|
386
|
|
|
# for users of the API |
|
387
|
|
|
try: |
|
388
|
|
|
network_new['time_since_update'] = getTimeSinceLastUpdate('docker_net_{}'.format(container_id)) |
|
389
|
|
|
network_new['rx'] = netcounters["eth0"]["rx_bytes"] - self.netcounters_old[container_id]["eth0"]["rx_bytes"] |
|
390
|
|
|
network_new['tx'] = netcounters["eth0"]["tx_bytes"] - self.netcounters_old[container_id]["eth0"]["tx_bytes"] |
|
391
|
|
|
network_new['cumulative_rx'] = netcounters["eth0"]["rx_bytes"] |
|
392
|
|
|
network_new['cumulative_tx'] = netcounters["eth0"]["tx_bytes"] |
|
393
|
|
|
except KeyError as e: |
|
394
|
|
|
# all_stats do not have INTERFACE information |
|
395
|
|
|
logger.debug("Cannot grab network interface usage for container {} ({})".format(container_id, e)) |
|
396
|
|
|
logger.debug(all_stats) |
|
397
|
|
|
|
|
398
|
|
|
# Save stats to compute next bitrate |
|
399
|
|
|
self.netcounters_old[container_id] = netcounters |
|
400
|
|
|
|
|
401
|
|
|
# Return the stats |
|
402
|
|
|
return network_new |
|
403
|
|
|
|
|
404
|
|
|
def get_docker_io(self, container_id, all_stats): |
|
405
|
|
|
"""Return the container IO usage using the Docker API (v1.0 or higher). |
|
406
|
|
|
|
|
407
|
|
|
Input: id is the full container id |
|
408
|
|
|
Output: a dict {'time_since_update': 3000, 'ior': 10, 'iow': 65}. |
|
409
|
|
|
with: |
|
410
|
|
|
time_since_update: number of seconds elapsed between the latest grab |
|
411
|
|
|
ior: Number of byte readed |
|
412
|
|
|
iow: Number of byte written |
|
413
|
|
|
""" |
|
414
|
|
|
# Init the returned dict |
|
415
|
|
|
io_new = {} |
|
416
|
|
|
|
|
417
|
|
|
# Read the ior/iow stats (in bytes) |
|
418
|
|
|
try: |
|
419
|
|
|
iocounters = all_stats["blkio_stats"] |
|
420
|
|
|
except KeyError as e: |
|
421
|
|
|
# all_stats do not have io information |
|
422
|
|
|
logger.debug("Cannot grab block IO usage for container {} ({})".format(container_id, e)) |
|
423
|
|
|
logger.debug(all_stats) |
|
424
|
|
|
# No fallback available... |
|
425
|
|
|
return io_new |
|
426
|
|
|
|
|
427
|
|
|
# Previous io interface stats are stored in the io_old variable |
|
428
|
|
|
if not hasattr(self, 'iocounters_old'): |
|
429
|
|
|
# First call, we init the io_old var |
|
430
|
|
|
self.iocounters_old = {} |
|
431
|
|
|
try: |
|
432
|
|
|
self.iocounters_old[container_id] = iocounters |
|
433
|
|
|
except (IOError, UnboundLocalError): |
|
434
|
|
|
pass |
|
435
|
|
|
|
|
436
|
|
|
if container_id not in self.iocounters_old: |
|
437
|
|
|
try: |
|
438
|
|
|
self.iocounters_old[container_id] = iocounters |
|
439
|
|
|
except (IOError, UnboundLocalError): |
|
440
|
|
|
pass |
|
441
|
|
|
else: |
|
442
|
|
|
# By storing time data we enable IoR/s and IoW/s calculations in the |
|
443
|
|
|
# XML/RPC API, which would otherwise be overly difficult work |
|
444
|
|
|
# for users of the API |
|
445
|
|
|
try: |
|
446
|
|
|
# Read IOR and IOW value in the structure list of dict |
|
447
|
|
|
ior = [i for i in iocounters['io_service_bytes_recursive'] if i['op'] == 'Read'][0]['value'] |
|
448
|
|
|
iow = [i for i in iocounters['io_service_bytes_recursive'] if i['op'] == 'Write'][0]['value'] |
|
449
|
|
|
ior_old = [i for i in self.iocounters_old[container_id]['io_service_bytes_recursive'] if i['op'] == 'Read'][0]['value'] |
|
450
|
|
|
iow_old = [i for i in self.iocounters_old[container_id]['io_service_bytes_recursive'] if i['op'] == 'Write'][0]['value'] |
|
451
|
|
|
except (IndexError, KeyError) as e: |
|
452
|
|
|
# all_stats do not have io information |
|
453
|
|
|
logger.debug("Cannot grab block IO usage for container {} ({})".format(container_id, e)) |
|
454
|
|
|
else: |
|
455
|
|
|
io_new['time_since_update'] = getTimeSinceLastUpdate('docker_io_{}'.format(container_id)) |
|
456
|
|
|
io_new['ior'] = ior - ior_old |
|
457
|
|
|
io_new['iow'] = iow - iow_old |
|
458
|
|
|
io_new['cumulative_ior'] = ior |
|
459
|
|
|
io_new['cumulative_iow'] = iow |
|
460
|
|
|
|
|
461
|
|
|
# Save stats to compute next bitrate |
|
462
|
|
|
self.iocounters_old[container_id] = iocounters |
|
463
|
|
|
|
|
464
|
|
|
# Return the stats |
|
465
|
|
|
return io_new |
|
466
|
|
|
|
|
467
|
|
|
def get_user_ticks(self): |
|
468
|
|
|
"""Return the user ticks by reading the environment variable.""" |
|
469
|
|
|
return os.sysconf(os.sysconf_names['SC_CLK_TCK']) |
|
470
|
|
|
|
|
471
|
|
|
def get_stats_action(self): |
|
472
|
|
|
"""Return stats for the action |
|
473
|
|
|
Docker will return self.stats['containers']""" |
|
474
|
|
|
return self.stats['containers'] |
|
475
|
|
|
|
|
476
|
|
|
def update_views(self): |
|
477
|
|
|
"""Update stats views.""" |
|
478
|
|
|
# Call the father's method |
|
479
|
|
|
super(Plugin, self).update_views() |
|
480
|
|
|
|
|
481
|
|
|
if 'containers' not in self.stats: |
|
482
|
|
|
return False |
|
483
|
|
|
|
|
484
|
|
|
# Add specifics informations |
|
485
|
|
|
# Alert |
|
486
|
|
|
for i in self.stats['containers']: |
|
487
|
|
|
# Init the views for the current container (key = container name) |
|
488
|
|
|
self.views[i[self.get_key()]] = {'cpu': {}, 'mem': {}} |
|
489
|
|
|
# CPU alert |
|
490
|
|
|
if 'cpu' in i and 'total' in i['cpu']: |
|
491
|
|
|
# Looking for specific CPU container threasold in the conf file |
|
492
|
|
|
alert = self.get_alert(i['cpu']['total'], |
|
493
|
|
|
header=i['name'] + '_cpu', |
|
494
|
|
|
action_key=i['name']) |
|
495
|
|
|
if alert == 'DEFAULT': |
|
496
|
|
|
# Not found ? Get back to default CPU threasold value |
|
497
|
|
|
alert = self.get_alert(i['cpu']['total'], header='cpu') |
|
498
|
|
|
self.views[i[self.get_key()]]['cpu']['decoration'] = alert |
|
499
|
|
|
# MEM alert |
|
500
|
|
|
if 'memory' in i and 'usage' in i['memory']: |
|
501
|
|
|
# Looking for specific MEM container threasold in the conf file |
|
502
|
|
|
alert = self.get_alert(i['memory']['usage'], |
|
503
|
|
|
maximum=i['memory']['limit'], |
|
504
|
|
|
header=i['name'] + '_mem', |
|
505
|
|
|
action_key=i['name']) |
|
506
|
|
|
if alert == 'DEFAULT': |
|
507
|
|
|
# Not found ? Get back to default MEM threasold value |
|
508
|
|
|
alert = self.get_alert(i['memory']['usage'], |
|
509
|
|
|
maximum=i['memory']['limit'], |
|
510
|
|
|
header='mem') |
|
511
|
|
|
self.views[i[self.get_key()]]['mem']['decoration'] = alert |
|
512
|
|
|
|
|
513
|
|
|
return True |
|
514
|
|
|
|
|
515
|
|
|
def msg_curse(self, args=None): |
|
516
|
|
|
"""Return the dict to display in the curse interface.""" |
|
517
|
|
|
# Init the return message |
|
518
|
|
|
ret = [] |
|
519
|
|
|
|
|
520
|
|
|
# Only process if stats exist (and non null) and display plugin enable... |
|
521
|
|
|
if not self.stats \ |
|
522
|
|
|
or len(self.stats['containers']) == 0 \ |
|
523
|
|
|
or self.is_disable(): |
|
524
|
|
|
return ret |
|
525
|
|
|
|
|
526
|
|
|
# Build the string message |
|
527
|
|
|
# Title |
|
528
|
|
|
msg = '{}'.format('CONTAINERS') |
|
529
|
|
|
ret.append(self.curse_add_line(msg, "TITLE")) |
|
530
|
|
|
msg = ' {}'.format(len(self.stats['containers'])) |
|
531
|
|
|
ret.append(self.curse_add_line(msg)) |
|
532
|
|
|
msg = ' (served by Docker {})'.format(self.stats['version']["Version"]) |
|
533
|
|
|
ret.append(self.curse_add_line(msg)) |
|
534
|
|
|
ret.append(self.curse_new_line()) |
|
535
|
|
|
# Header |
|
536
|
|
|
ret.append(self.curse_new_line()) |
|
537
|
|
|
# msg = '{:>14}'.format('Id') |
|
538
|
|
|
# ret.append(self.curse_add_line(msg)) |
|
539
|
|
|
# Get the maximum containers name (cutted to 20 char max) |
|
540
|
|
|
name_max_width = min(20, len(max(self.stats['containers'], key=lambda x: len(x['name']))['name'])) |
|
541
|
|
|
msg = ' {:{width}}'.format('Name', width=name_max_width) |
|
542
|
|
|
ret.append(self.curse_add_line(msg)) |
|
543
|
|
|
msg = '{:>26}'.format('Status') |
|
544
|
|
|
ret.append(self.curse_add_line(msg)) |
|
545
|
|
|
msg = '{:>6}'.format('CPU%') |
|
546
|
|
|
ret.append(self.curse_add_line(msg)) |
|
547
|
|
|
msg = '{:>7}'.format('MEM') |
|
548
|
|
|
ret.append(self.curse_add_line(msg)) |
|
549
|
|
|
msg = '{:>7}'.format('/MAX') |
|
550
|
|
|
ret.append(self.curse_add_line(msg)) |
|
551
|
|
|
msg = '{:>7}'.format('IOR/s') |
|
552
|
|
|
ret.append(self.curse_add_line(msg)) |
|
553
|
|
|
msg = '{:>7}'.format('IOW/s') |
|
554
|
|
|
ret.append(self.curse_add_line(msg)) |
|
555
|
|
|
msg = '{:>7}'.format('Rx/s') |
|
556
|
|
|
ret.append(self.curse_add_line(msg)) |
|
557
|
|
|
msg = '{:>7}'.format('Tx/s') |
|
558
|
|
|
ret.append(self.curse_add_line(msg)) |
|
559
|
|
|
msg = ' {:8}'.format('Command') |
|
560
|
|
|
ret.append(self.curse_add_line(msg)) |
|
561
|
|
|
# Data |
|
562
|
|
|
for container in self.stats['containers']: |
|
563
|
|
|
ret.append(self.curse_new_line()) |
|
564
|
|
|
# Id |
|
565
|
|
|
# msg = '{:>14}'.format(container['Id'][0:12]) |
|
566
|
|
|
# ret.append(self.curse_add_line(msg)) |
|
567
|
|
|
# Name |
|
568
|
|
|
name = container['name'] |
|
569
|
|
|
if len(name) > name_max_width: |
|
570
|
|
|
name = '_' + name[-name_max_width + 1:] |
|
571
|
|
|
else: |
|
572
|
|
|
name = name[:name_max_width] |
|
573
|
|
|
msg = ' {:{width}}'.format(name, width=name_max_width) |
|
574
|
|
|
ret.append(self.curse_add_line(msg)) |
|
575
|
|
|
# Status |
|
576
|
|
|
status = self.container_alert(container['Status']) |
|
577
|
|
|
msg = container['Status'].replace("minute", "min") |
|
578
|
|
|
msg = '{:>26}'.format(msg[0:25]) |
|
579
|
|
|
ret.append(self.curse_add_line(msg, status)) |
|
580
|
|
|
# CPU |
|
581
|
|
|
try: |
|
582
|
|
|
msg = '{:>6.1f}'.format(container['cpu']['total']) |
|
583
|
|
|
except KeyError: |
|
584
|
|
|
msg = '{:>6}'.format('?') |
|
585
|
|
|
ret.append(self.curse_add_line(msg, self.get_views(item=container['name'], |
|
586
|
|
|
key='cpu', |
|
587
|
|
|
option='decoration'))) |
|
588
|
|
|
# MEM |
|
589
|
|
|
try: |
|
590
|
|
|
msg = '{:>7}'.format(self.auto_unit(container['memory']['usage'])) |
|
591
|
|
|
except KeyError: |
|
592
|
|
|
msg = '{:>7}'.format('?') |
|
593
|
|
|
ret.append(self.curse_add_line(msg, self.get_views(item=container['name'], |
|
594
|
|
|
key='mem', |
|
595
|
|
|
option='decoration'))) |
|
596
|
|
|
try: |
|
597
|
|
|
msg = '{:>7}'.format(self.auto_unit(container['memory']['limit'])) |
|
598
|
|
|
except KeyError: |
|
599
|
|
|
msg = '{:>7}'.format('?') |
|
600
|
|
|
ret.append(self.curse_add_line(msg)) |
|
601
|
|
|
# IO R/W |
|
602
|
|
|
for r in ['ior', 'iow']: |
|
603
|
|
|
try: |
|
604
|
|
|
value = self.auto_unit(int(container['io'][r] // container['io']['time_since_update'] * 8)) + "b" |
|
605
|
|
|
msg = '{:>7}'.format(value) |
|
606
|
|
|
except KeyError: |
|
607
|
|
|
msg = '{:>7}'.format('?') |
|
608
|
|
|
ret.append(self.curse_add_line(msg)) |
|
609
|
|
|
# NET RX/TX |
|
610
|
|
|
if args.byte: |
|
611
|
|
|
# Bytes per second (for dummy) |
|
612
|
|
|
to_bit = 1 |
|
613
|
|
|
unit = '' |
|
614
|
|
|
else: |
|
615
|
|
|
# Bits per second (for real network administrator | Default) |
|
616
|
|
|
to_bit = 8 |
|
617
|
|
|
unit = 'b' |
|
618
|
|
|
for r in ['rx', 'tx']: |
|
619
|
|
|
try: |
|
620
|
|
|
value = self.auto_unit(int(container['network'][r] // container['network']['time_since_update'] * to_bit)) + unit |
|
621
|
|
|
msg = '{:>7}'.format(value) |
|
622
|
|
|
except KeyError: |
|
623
|
|
|
msg = '{:>7}'.format('?') |
|
624
|
|
|
ret.append(self.curse_add_line(msg)) |
|
625
|
|
|
# Command |
|
626
|
|
|
msg = ' {}'.format(container['Command']) |
|
627
|
|
|
ret.append(self.curse_add_line(msg, splittable=True)) |
|
628
|
|
|
|
|
629
|
|
|
return ret |
|
630
|
|
|
|
|
631
|
|
|
def container_alert(self, status): |
|
632
|
|
|
"""Analyse the container status.""" |
|
633
|
|
|
if "Paused" in status: |
|
634
|
|
|
return 'CAREFUL' |
|
635
|
|
|
else: |
|
636
|
|
|
return 'OK' |
|
637
|
|
|
|
|
638
|
|
|
|
|
639
|
|
|
class ThreadDockerGrabber(threading.Thread): |
|
640
|
|
|
""" |
|
641
|
|
|
Specific thread to grab docker stats. |
|
642
|
|
|
|
|
643
|
|
|
stats is a dict |
|
644
|
|
|
""" |
|
645
|
|
|
|
|
646
|
|
|
def __init__(self, docker_client, container_id): |
|
647
|
|
|
"""Init the class: |
|
648
|
|
|
docker_client: instance of Docker-py client |
|
649
|
|
|
container_id: Id of the container""" |
|
650
|
|
|
logger.debug("docker plugin - Create thread for container {}".format(container_id[:12])) |
|
651
|
|
|
super(ThreadDockerGrabber, self).__init__() |
|
652
|
|
|
# Event needed to stop properly the thread |
|
653
|
|
|
self._stopper = threading.Event() |
|
654
|
|
|
# The docker-py return stats as a stream |
|
655
|
|
|
self._container_id = container_id |
|
656
|
|
|
self._stats_stream = docker_client.stats(container_id, decode=True) |
|
657
|
|
|
# The class return the stats as a dict |
|
658
|
|
|
self._stats = {} |
|
659
|
|
|
|
|
660
|
|
|
def run(self): |
|
661
|
|
|
"""Function called to grab stats. |
|
662
|
|
|
Infinite loop, should be stopped by calling the stop() method""" |
|
663
|
|
|
|
|
664
|
|
|
for i in self._stats_stream: |
|
665
|
|
|
self._stats = i |
|
666
|
|
|
time.sleep(0.1) |
|
667
|
|
|
if self.stopped(): |
|
668
|
|
|
break |
|
669
|
|
|
|
|
670
|
|
|
@property |
|
671
|
|
|
def stats(self): |
|
672
|
|
|
"""Stats getter""" |
|
673
|
|
|
return self._stats |
|
674
|
|
|
|
|
675
|
|
|
@stats.setter |
|
676
|
|
|
def stats(self, value): |
|
677
|
|
|
"""Stats setter""" |
|
678
|
|
|
self._stats = value |
|
679
|
|
|
|
|
680
|
|
|
def stop(self, timeout=None): |
|
681
|
|
|
"""Stop the thread""" |
|
682
|
|
|
logger.debug("docker plugin - Close thread for container {}".format(self._container_id[:12])) |
|
683
|
|
|
self._stopper.set() |
|
684
|
|
|
|
|
685
|
|
|
def stopped(self): |
|
686
|
|
|
"""Return True is the thread is stopped""" |
|
687
|
|
|
return self._stopper.isSet() |
|
688
|
|
|
|
nicolargo /
glances
