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# |
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# This file is part of Glances. |
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# |
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# SPDX-FileCopyrightText: 2024 Nicolas Hennion <[email protected]> |
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# |
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# SPDX-License-Identifier: LGPL-3.0-only |
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# |
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"""RestFull API interface class.""" |
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import os |
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import socket |
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import sys |
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import tempfile |
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import webbrowser |
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from typing import Annotated, Any, Union |
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from urllib.parse import urljoin |
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from glances import __apiversion__, __version__ |
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from glances.events_list import glances_events |
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from glances.globals import json_dumps |
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from glances.logger import logger |
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from glances.password import GlancesPassword |
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from glances.processes import glances_processes |
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from glances.servers_list import GlancesServersList |
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from glances.servers_list_dynamic import GlancesAutoDiscoverClient |
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from glances.stats import GlancesStats |
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from glances.timer import Timer |
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# FastAPI import |
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try: |
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from fastapi import APIRouter, Depends, FastAPI, HTTPException, Request, status |
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from fastapi.middleware.cors import CORSMiddleware |
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from fastapi.middleware.gzip import GZipMiddleware |
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from fastapi.responses import HTMLResponse, JSONResponse |
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from fastapi.security import HTTPBasic, HTTPBasicCredentials |
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from fastapi.staticfiles import StaticFiles |
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from fastapi.templating import Jinja2Templates |
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except ImportError as e: |
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logger.critical(f'FastAPI import error: {e}') |
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logger.critical('Glances cannot start in web server mode.') |
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sys.exit(2) |
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try: |
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import uvicorn |
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except ImportError: |
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logger.critical('Uvicorn import error. Glances cannot start in web server mode.') |
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sys.exit(2) |
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import builtins |
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import contextlib |
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import threading |
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import time |
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security = HTTPBasic() |
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class GlancesJSONResponse(JSONResponse): |
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""" |
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Glances impl of fastapi's JSONResponse to use internal JSON Serialization features |
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Ref: https://fastapi.tiangolo.com/advanced/custom-response/ |
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""" |
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def render(self, content: Any) -> bytes: |
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return json_dumps(content) |
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class GlancesUvicornServer(uvicorn.Server): |
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def install_signal_handlers(self): |
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pass |
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@contextlib.contextmanager |
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def run_in_thread(self, timeout=3): |
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thread = threading.Thread(target=self.run) |
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thread.start() |
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try: |
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chrono = Timer(timeout) |
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while not self.started and not chrono.finished(): |
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time.sleep(0.5) |
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# Timeout reached |
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# Something go wrong... |
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# The Uvicorn server should be stopped |
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if not self.started: |
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self.should_exit = True |
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thread.join() |
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yield |
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finally: |
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self.should_exit = True |
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thread.join() |
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class GlancesRestfulApi: |
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"""This class manages the Restful API server.""" |
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API_VERSION = __apiversion__ |
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def __init__(self, config=None, args=None): |
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# Init config |
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self.config = config |
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# Init args |
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self.args = args |
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# Init stats |
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# Will be updated within route |
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self.stats = None |
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# Init servers list (only for the browser mode) |
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if self.args.browser: |
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self.servers_list = GlancesServersList(config=config, args=args) |
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else: |
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self.servers_list = None |
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# cached_time is the minimum time interval between stats updates |
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# i.e. HTTP/RESTful calls will not retrieve updated info until the time |
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# since last update is passed (will retrieve old cached info instead) |
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self.timer = Timer(0) |
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# Load configuration file |
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self.load_config(config) |
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# Set the bind URL |
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self.bind_url = urljoin(f'http://{self.args.bind_address}:{self.args.port}/', self.url_prefix) |
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# FastAPI Init |
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if self.args.password: |
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self._app = FastAPI(default_response_class=GlancesJSONResponse, dependencies=[Depends(self.authentication)]) |
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self._password = GlancesPassword(username=args.username, config=config) |
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else: |
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self._app = FastAPI(default_response_class=GlancesJSONResponse) |
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self._password = None |
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# Set path for WebUI |
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webui_root_path = config.get_value( |
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'outputs', 'webui_root_path', default=os.path.dirname(os.path.realpath(__file__)) |
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) |
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if webui_root_path == '': |
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webui_root_path = os.path.dirname(os.path.realpath(__file__)) |
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self.STATIC_PATH = os.path.join(webui_root_path, 'static/public') |
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self.TEMPLATE_PATH = os.path.join(webui_root_path, 'static/templates') |
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self._templates = Jinja2Templates(directory=self.TEMPLATE_PATH) |
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# FastAPI Enable CORS |
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# https://fastapi.tiangolo.com/tutorial/cors/ |
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self._app.add_middleware( |
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CORSMiddleware, |
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# Related to https://github.com/nicolargo/glances/issues/2812 |
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allow_origins=config.get_list_value('outputs', 'cors_origins', default=["*"]), |
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allow_credentials=config.get_bool_value('outputs', 'cors_credentials', default=True), |
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allow_methods=config.get_list_value('outputs', 'cors_methods', default=["*"]), |
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allow_headers=config.get_list_value('outputs', 'cors_headers', default=["*"]), |
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) |
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# FastAPI Enable GZIP compression |
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# https://fastapi.tiangolo.com/advanced/middleware/ |
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self._app.add_middleware(GZipMiddleware, minimum_size=1000) |
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# FastAPI Define routes |
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self._app.include_router(self._router()) |
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# Enable auto discovering of the service |
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self.autodiscover_client = None |
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if not self.args.disable_autodiscover: |
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logger.info('Autodiscover is enabled with service name {}'.format(socket.gethostname().split('.', 1)[0])) |
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self.autodiscover_client = GlancesAutoDiscoverClient(socket.gethostname().split('.', 1)[0], self.args) |
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else: |
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logger.info("Glances autodiscover announce is disabled") |
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def load_config(self, config): |
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"""Load the outputs section of the configuration file.""" |
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# Limit the number of processes to display in the WebUI |
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self.url_prefix = '' |
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if config is not None and config.has_section('outputs'): |
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# Max process to display in the WebUI |
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n = config.get_value('outputs', 'max_processes_display', default=None) |
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logger.debug(f'Number of processes to display in the WebUI: {n}') |
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# URL prefix |
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self.url_prefix = config.get_value('outputs', 'url_prefix', default='') |
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if self.url_prefix != '': |
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self.url_prefix = self.url_prefix.rstrip('/') |
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logger.debug(f'URL prefix: {self.url_prefix}') |
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def __update_stats(self): |
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# Never update more than 1 time per cached_time |
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if self.timer.finished(): |
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self.stats.update() |
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self.timer = Timer(self.args.cached_time) |
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def __update_servers_list(self): |
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# Never update more than 1 time per cached_time |
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if self.timer.finished() and self.servers_list is not None: |
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self.servers_list.update_servers_stats() |
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self.timer = Timer(self.args.cached_time) |
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def authentication(self, creds: Annotated[HTTPBasicCredentials, Depends(security)]): |
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"""Check if a username/password combination is valid.""" |
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if creds.username == self.args.username: |
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# check_password and get_hash are (lru) cached to optimize the requests |
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if self._password.check_password(self.args.password, self._password.get_hash(creds.password)): |
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return creds.username |
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# If the username/password combination is invalid, return an HTTP 401 |
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raise HTTPException( |
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status.HTTP_401_UNAUTHORIZED, "Incorrect username or password", {"WWW-Authenticate": "Basic"} |
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) |
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def _router(self) -> APIRouter: |
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"""Define a custom router for Glances path.""" |
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base_path = f'/api/{self.API_VERSION}' |
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plugin_path = f"{base_path}/{{plugin}}" |
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# Create the main router |
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router = APIRouter(prefix=self.url_prefix) |
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# REST API route definition |
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# ========================== |
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# HEAD |
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router.add_api_route(f'{base_path}/status', self._api_status, methods=['HEAD', 'GET']) |
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# POST |
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router.add_api_route(f'{base_path}/events/clear/warning', self._events_clear_warning, methods=['POST']) |
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router.add_api_route(f'{base_path}/events/clear/all', self._events_clear_all, methods=['POST']) |
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router.add_api_route( |
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f'{base_path}/processes/extended/disable', self._api_disable_extended_processes, methods=['POST'] |
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) |
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router.add_api_route( |
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f'{base_path}/processes/extended/{{pid}}', self._api_set_extended_processes, methods=['POST'] |
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) |
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# GET |
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route_mapping = { |
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f'{base_path}/config': self._api_config, |
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f'{base_path}/config/{{section}}': self._api_config_section, |
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f'{base_path}/config/{{section}}/{{item}}': self._api_config_section_item, |
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f'{base_path}/args': self._api_args, |
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f'{base_path}/args/{{item}}': self._api_args_item, |
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f'{base_path}/help': self._api_help, |
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f'{base_path}/all': self._api_all, |
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f'{base_path}/all/limits': self._api_all_limits, |
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f'{base_path}/all/views': self._api_all_views, |
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f'{base_path}/pluginslist': self._api_plugins, |
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f'{base_path}/serverslist': self._api_servers_list, |
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f'{base_path}/processes/extended': self._api_get_extended_processes, |
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f'{base_path}/processes/{{pid}}': self._api_get_processes, |
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f'{plugin_path}': self._api, |
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f'{plugin_path}/history': self._api_history, |
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f'{plugin_path}/history/{{nb}}': self._api_history, |
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f'{plugin_path}/top/{{nb}}': self._api_top, |
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f'{plugin_path}/limits': self._api_limits, |
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f'{plugin_path}/views': self._api_views, |
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f'{plugin_path}/{{item}}': self._api_item, |
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f'{plugin_path}/{{item}}/views': self._api_item_views, |
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f'{plugin_path}/{{item}}/history': self._api_item_history, |
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f'{plugin_path}/{{item}}/history/{{nb}}': self._api_item_history, |
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f'{plugin_path}/{{item}}/description': self._api_item_description, |
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f'{plugin_path}/{{item}}/unit': self._api_item_unit, |
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f'{plugin_path}/{{item}}/value/{{value:path}}': self._api_value, |
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f'{plugin_path}/{{item}}/{{key}}': self._api_key, |
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f'{plugin_path}/{{item}}/{{key}}/views': self._api_key_views, |
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} |
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for path, endpoint in route_mapping.items(): |
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router.add_api_route(path, endpoint) |
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# Browser WEBUI |
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if self.args.browser: |
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# Template for the root browser.html file |
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router.add_api_route('/browser', self._browser, response_class=HTMLResponse) |
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# Statics files |
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self._app.mount(self.url_prefix + '/static', StaticFiles(directory=self.STATIC_PATH), name="static") |
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logger.debug(f"The Browser WebUI is enable and got statics files in {self.STATIC_PATH}") |
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bindmsg = f'Glances Browser Web User Interface started on {self.bind_url}browser' |
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logger.info(bindmsg) |
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print(bindmsg) |
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# WEBUI |
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if not self.args.disable_webui: |
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# Template for the root index.html file |
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router.add_api_route('/', self._index, response_class=HTMLResponse) |
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# Statics files |
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self._app.mount(self.url_prefix + '/static', StaticFiles(directory=self.STATIC_PATH), name="static") |
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logger.debug(f"The WebUI is enable and got statics files in {self.STATIC_PATH}") |
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bindmsg = f'Glances Web User Interface started on {self.bind_url}' |
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logger.info(bindmsg) |
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print(bindmsg) |
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else: |
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logger.info('The WebUI is disable (--disable-webui)') |
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# Restful API |
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bindmsg = f'Glances RESTful API Server started on {self.bind_url}api/{self.API_VERSION}' |
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logger.info(bindmsg) |
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print(bindmsg) |
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return router |
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def start(self, stats: GlancesStats) -> None: |
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"""Start the bottle.""" |
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# Init stats |
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self.stats = stats |
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# Init plugin list |
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self.plugins_list = self.stats.getPluginsList() |
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if self.args.open_web_browser: |
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# Implementation of the issue #946 |
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# Try to open the Glances Web UI in the default Web browser if: |
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# 1) --open-web-browser option is used |
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# 2) Glances standalone mode is running on Windows OS |
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webbrowser.open(self.bind_url, new=2, autoraise=1) |
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# Start Uvicorn server |
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self._start_uvicorn() |
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def _start_uvicorn(self): |
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# Run the Uvicorn Web server |
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uvicorn_config = uvicorn.Config( |
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self._app, host=self.args.bind_address, port=self.args.port, access_log=self.args.debug |
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) |
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try: |
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self.uvicorn_server = GlancesUvicornServer(config=uvicorn_config) |
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except Exception as e: |
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logger.critical(f'Error: Can not ran Glances Web server ({e})') |
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self.uvicorn_server = None |
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else: |
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with self.uvicorn_server.run_in_thread(): |
331
|
|
|
while not self.uvicorn_server.should_exit: |
332
|
|
|
time.sleep(1) |
333
|
|
|
|
334
|
|
|
def end(self): |
335
|
|
|
"""End the Web server""" |
336
|
|
|
if not self.args.disable_autodiscover and self.autodiscover_client: |
337
|
|
|
self.autodiscover_client.close() |
338
|
|
|
logger.info("Close the Web server") |
339
|
|
|
|
340
|
|
|
def _index(self, request: Request): |
341
|
|
|
"""Return main index.html (/) file. |
342
|
|
|
|
343
|
|
|
Parameters are available through the request object. |
344
|
|
|
Example: http://localhost:61208/?refresh=5 |
345
|
|
|
|
346
|
|
|
Note: This function is only called the first time the page is loaded. |
347
|
|
|
""" |
348
|
|
|
refresh_time = request.query_params.get('refresh', default=max(1, int(self.args.time))) |
349
|
|
|
|
350
|
|
|
# Update the stat |
351
|
|
|
self.__update_stats() |
352
|
|
|
|
353
|
|
|
# Display |
354
|
|
|
return self._templates.TemplateResponse("index.html", {"request": request, "refresh_time": refresh_time}) |
355
|
|
|
|
356
|
|
|
def _browser(self, request: Request): |
357
|
|
|
"""Return main browser.html (/browser) file. |
358
|
|
|
|
359
|
|
|
Note: This function is only called the first time the page is loaded. |
360
|
|
|
""" |
361
|
|
|
refresh_time = request.query_params.get('refresh', default=max(1, int(self.args.time))) |
362
|
|
|
|
363
|
|
|
# Display |
364
|
|
|
return self._templates.TemplateResponse("browser.html", {"request": request, "refresh_time": refresh_time}) |
365
|
|
|
|
366
|
|
|
def _api_status(self): |
367
|
|
|
"""Glances API RESTful implementation. |
368
|
|
|
|
369
|
|
|
Return a 200 status code. |
370
|
|
|
This entry point should be used to check the API health. |
371
|
|
|
|
372
|
|
|
See related issue: Web server health check endpoint #1988 |
373
|
|
|
""" |
374
|
|
|
|
375
|
|
|
return GlancesJSONResponse({'version': __version__}) |
376
|
|
|
|
377
|
|
|
def _events_clear_warning(self): |
378
|
|
|
"""Glances API RESTful implementation. |
379
|
|
|
|
380
|
|
|
Return a 200 status code. |
381
|
|
|
|
382
|
|
|
It's a post message to clean warning events |
383
|
|
|
""" |
384
|
|
|
glances_events.clean() |
385
|
|
|
return GlancesJSONResponse({}) |
386
|
|
|
|
387
|
|
|
def _events_clear_all(self): |
388
|
|
|
"""Glances API RESTful implementation. |
389
|
|
|
|
390
|
|
|
Return a 200 status code. |
391
|
|
|
|
392
|
|
|
It's a post message to clean all events |
393
|
|
|
""" |
394
|
|
|
glances_events.clean(critical=True) |
395
|
|
|
return GlancesJSONResponse({}) |
396
|
|
|
|
397
|
|
|
def _api_help(self): |
398
|
|
|
"""Glances API RESTful implementation. |
399
|
|
|
|
400
|
|
|
Return the help data or 404 error. |
401
|
|
|
""" |
402
|
|
|
try: |
403
|
|
|
plist = self.stats.get_plugin("help").get_view_data() |
404
|
|
|
except Exception as e: |
405
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get help view data ({str(e)})") |
406
|
|
|
|
407
|
|
|
return GlancesJSONResponse(plist) |
408
|
|
|
|
409
|
|
|
def _api_plugins(self): |
410
|
|
|
"""Glances API RESTFul implementation. |
411
|
|
|
|
412
|
|
|
@api {get} /api/%s/pluginslist Get plugins list |
413
|
|
|
@apiVersion 2.0 |
414
|
|
|
@apiName pluginslist |
415
|
|
|
@apiGroup plugin |
416
|
|
|
|
417
|
|
|
@apiSuccess {String[]} Plugins list. |
418
|
|
|
|
419
|
|
|
@apiSuccessExample Success-Response: |
420
|
|
|
HTTP/1.1 200 OK |
421
|
|
|
[ |
422
|
|
|
"load", |
423
|
|
|
"help", |
424
|
|
|
"ip", |
425
|
|
|
"memswap", |
426
|
|
|
"processlist", |
427
|
|
|
... |
428
|
|
|
] |
429
|
|
|
|
430
|
|
|
@apiError Cannot get plugin list. |
431
|
|
|
|
432
|
|
|
@apiErrorExample Error-Response: |
433
|
|
|
HTTP/1.1 404 Not Found |
434
|
|
|
""" |
435
|
|
|
# Update the stat |
436
|
|
|
self.__update_stats() |
437
|
|
|
|
438
|
|
|
try: |
439
|
|
|
plist = self.plugins_list |
440
|
|
|
except Exception as e: |
441
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get plugin list ({str(e)})") |
442
|
|
|
|
443
|
|
|
return GlancesJSONResponse(plist) |
444
|
|
|
|
445
|
|
|
def _api_servers_list(self): |
446
|
|
|
"""Glances API RESTful implementation. |
447
|
|
|
|
448
|
|
|
Return the JSON representation of the servers list (for browser mode) |
449
|
|
|
HTTP/200 if OK |
450
|
|
|
""" |
451
|
|
|
# Update the servers list (and the stats for all the servers) |
452
|
|
|
self.__update_servers_list() |
453
|
|
|
|
454
|
|
|
return GlancesJSONResponse(self.servers_list.get_servers_list() if self.servers_list else []) |
455
|
|
|
|
456
|
|
|
def _api_all(self): |
457
|
|
|
"""Glances API RESTful implementation. |
458
|
|
|
|
459
|
|
|
Return the JSON representation of all the plugins |
460
|
|
|
HTTP/200 if OK |
461
|
|
|
HTTP/400 if plugin is not found |
462
|
|
|
HTTP/404 if others error |
463
|
|
|
""" |
464
|
|
|
if self.args.debug: |
465
|
|
|
fname = os.path.join(tempfile.gettempdir(), 'glances-debug.json') |
466
|
|
|
try: |
467
|
|
|
with builtins.open(fname) as f: |
468
|
|
|
return f.read() |
469
|
|
|
except OSError: |
470
|
|
|
logger.debug(f"Debug file ({fname}) not found") |
471
|
|
|
|
472
|
|
|
# Update the stat |
473
|
|
|
self.__update_stats() |
474
|
|
|
|
475
|
|
|
try: |
476
|
|
|
# Get the RAW value of the stat ID |
477
|
|
|
statval = self.stats.getAllAsDict() |
478
|
|
|
except Exception as e: |
479
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get stats ({str(e)})") |
480
|
|
|
|
481
|
|
|
return GlancesJSONResponse(statval) |
482
|
|
|
|
483
|
|
|
def _api_all_limits(self): |
484
|
|
|
"""Glances API RESTful implementation. |
485
|
|
|
|
486
|
|
|
Return the JSON representation of all the plugins limits |
487
|
|
|
HTTP/200 if OK |
488
|
|
|
HTTP/400 if plugin is not found |
489
|
|
|
HTTP/404 if others error |
490
|
|
|
""" |
491
|
|
|
try: |
492
|
|
|
# Get the RAW value of the stat limits |
493
|
|
|
limits = self.stats.getAllLimitsAsDict() |
494
|
|
|
except Exception as e: |
495
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get limits ({str(e)})") |
496
|
|
|
|
497
|
|
|
return GlancesJSONResponse(limits) |
498
|
|
|
|
499
|
|
|
def _api_all_views(self): |
500
|
|
|
"""Glances API RESTful implementation. |
501
|
|
|
|
502
|
|
|
Return the JSON representation of all the plugins views |
503
|
|
|
HTTP/200 if OK |
504
|
|
|
HTTP/400 if plugin is not found |
505
|
|
|
HTTP/404 if others error |
506
|
|
|
""" |
507
|
|
|
try: |
508
|
|
|
# Get the RAW value of the stat view |
509
|
|
|
limits = self.stats.getAllViewsAsDict() |
510
|
|
|
except Exception as e: |
511
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get views ({str(e)})") |
512
|
|
|
|
513
|
|
|
return GlancesJSONResponse(limits) |
514
|
|
|
|
515
|
|
|
def _api(self, plugin: str): |
516
|
|
|
"""Glances API RESTful implementation. |
517
|
|
|
|
518
|
|
|
Return the JSON representation of a given plugin |
519
|
|
|
HTTP/200 if OK |
520
|
|
|
HTTP/400 if plugin is not found |
521
|
|
|
HTTP/404 if others error |
522
|
|
|
""" |
523
|
|
|
self._check_if_plugin_available(plugin) |
524
|
|
|
|
525
|
|
|
# Update the stat |
526
|
|
|
self.__update_stats() |
527
|
|
|
|
528
|
|
|
try: |
529
|
|
|
# Get the RAW value of the stat ID |
530
|
|
|
statval = self.stats.get_plugin(plugin).get_raw() |
531
|
|
|
except Exception as e: |
532
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get plugin {plugin} ({str(e)})") |
533
|
|
|
|
534
|
|
|
return GlancesJSONResponse(statval) |
535
|
|
|
|
536
|
|
|
def _check_if_plugin_available(self, plugin: str) -> None: |
537
|
|
|
if plugin in self.plugins_list: |
538
|
|
|
return |
539
|
|
|
|
540
|
|
|
raise HTTPException( |
541
|
|
|
status.HTTP_400_BAD_REQUEST, f"Unknown plugin {plugin} (available plugins: {self.plugins_list})" |
542
|
|
|
) |
543
|
|
|
|
544
|
|
|
def _api_top(self, plugin: str, nb: int = 0): |
545
|
|
|
"""Glances API RESTful implementation. |
546
|
|
|
|
547
|
|
|
Return the JSON representation of a given plugin limited to the top nb items. |
548
|
|
|
It is used to reduce the payload of the HTTP response (example: processlist). |
549
|
|
|
|
550
|
|
|
HTTP/200 if OK |
551
|
|
|
HTTP/400 if plugin is not found |
552
|
|
|
HTTP/404 if others error |
553
|
|
|
""" |
554
|
|
|
self._check_if_plugin_available(plugin) |
555
|
|
|
|
556
|
|
|
# Update the stat |
557
|
|
|
self.__update_stats() |
558
|
|
|
|
559
|
|
|
try: |
560
|
|
|
# Get the RAW value of the stat ID |
561
|
|
|
statval = self.stats.get_plugin(plugin).get_raw() |
562
|
|
|
except Exception as e: |
563
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get plugin {plugin} ({str(e)})") |
564
|
|
|
|
565
|
|
|
print(statval) |
566
|
|
|
|
567
|
|
|
if isinstance(statval, list): |
568
|
|
|
statval = statval[:nb] |
569
|
|
|
|
570
|
|
|
return GlancesJSONResponse(statval) |
571
|
|
|
|
572
|
|
|
def _api_history(self, plugin: str, nb: int = 0): |
573
|
|
|
"""Glances API RESTful implementation. |
574
|
|
|
|
575
|
|
|
Return the JSON representation of a given plugin history |
576
|
|
|
Limit to the last nb items (all if nb=0) |
577
|
|
|
HTTP/200 if OK |
578
|
|
|
HTTP/400 if plugin is not found |
579
|
|
|
HTTP/404 if others error |
580
|
|
|
""" |
581
|
|
|
self._check_if_plugin_available(plugin) |
582
|
|
|
|
583
|
|
|
# Update the stat |
584
|
|
|
self.__update_stats() |
585
|
|
|
|
586
|
|
|
try: |
587
|
|
|
# Get the RAW value of the stat ID |
588
|
|
|
statval = self.stats.get_plugin(plugin).get_raw_history(nb=int(nb)) |
589
|
|
|
except Exception as e: |
590
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get plugin history {plugin} ({str(e)})") |
591
|
|
|
|
592
|
|
|
return statval |
593
|
|
|
|
594
|
|
|
def _api_limits(self, plugin: str): |
595
|
|
|
"""Glances API RESTful implementation. |
596
|
|
|
|
597
|
|
|
Return the JSON limits of a given plugin |
598
|
|
|
HTTP/200 if OK |
599
|
|
|
HTTP/400 if plugin is not found |
600
|
|
|
HTTP/404 if others error |
601
|
|
|
""" |
602
|
|
|
self._check_if_plugin_available(plugin) |
603
|
|
|
|
604
|
|
|
try: |
605
|
|
|
# Get the RAW value of the stat limits |
606
|
|
|
ret = self.stats.get_plugin(plugin).limits |
607
|
|
|
except Exception as e: |
608
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get limits for plugin {plugin} ({str(e)})") |
609
|
|
|
|
610
|
|
|
return GlancesJSONResponse(ret) |
611
|
|
|
|
612
|
|
|
def _api_views(self, plugin: str): |
613
|
|
|
"""Glances API RESTful implementation. |
614
|
|
|
|
615
|
|
|
Return the JSON views of a given plugin |
616
|
|
|
HTTP/200 if OK |
617
|
|
|
HTTP/400 if plugin is not found |
618
|
|
|
HTTP/404 if others error |
619
|
|
|
""" |
620
|
|
|
if plugin not in self.plugins_list: |
621
|
|
|
raise HTTPException( |
622
|
|
|
status.HTTP_400_BAD_REQUEST, f"Unknown plugin {plugin} (available plugins: {self.plugins_list})" |
623
|
|
|
) |
624
|
|
|
|
625
|
|
|
try: |
626
|
|
|
# Get the RAW value of the stat views |
627
|
|
|
ret = self.stats.get_plugin(plugin).get_views() |
628
|
|
|
except Exception as e: |
629
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get views for plugin {plugin} ({str(e)})") |
630
|
|
|
|
631
|
|
|
return GlancesJSONResponse(ret) |
632
|
|
|
|
633
|
|
|
def _api_item(self, plugin: str, item: str): |
634
|
|
|
"""Glances API RESTful implementation. |
635
|
|
|
|
636
|
|
|
Return the JSON representation of the couple plugin/item |
637
|
|
|
HTTP/200 if OK |
638
|
|
|
HTTP/400 if plugin is not found |
639
|
|
|
HTTP/404 if others error |
640
|
|
|
""" |
641
|
|
|
self._check_if_plugin_available(plugin) |
642
|
|
|
|
643
|
|
|
# Update the stat |
644
|
|
|
self.__update_stats() |
645
|
|
|
|
646
|
|
|
try: |
647
|
|
|
# Get the RAW value of the stat views |
648
|
|
|
ret = self.stats.get_plugin(plugin).get_raw_stats_item(item) |
649
|
|
|
except Exception as e: |
650
|
|
|
raise HTTPException( |
651
|
|
|
status.HTTP_404_NOT_FOUND, |
652
|
|
|
f"Cannot get item {item} in plugin {plugin} ({str(e)})", |
653
|
|
|
) |
654
|
|
|
|
655
|
|
|
return GlancesJSONResponse(ret) |
656
|
|
|
|
657
|
|
|
def _api_key(self, plugin: str, item: str, key: str): |
658
|
|
|
"""Glances API RESTful implementation. |
659
|
|
|
|
660
|
|
|
Return the JSON representation of plugin/item/key |
661
|
|
|
HTTP/200 if OK |
662
|
|
|
HTTP/400 if plugin is not found |
663
|
|
|
HTTP/404 if others error |
664
|
|
|
""" |
665
|
|
|
self._check_if_plugin_available(plugin) |
666
|
|
|
|
667
|
|
|
# Update the stat |
668
|
|
|
self.__update_stats() |
669
|
|
|
|
670
|
|
|
try: |
671
|
|
|
# Get the RAW value of the stat views |
672
|
|
|
ret = self.stats.get_plugin(plugin).get_raw_stats_key(item, key) |
673
|
|
|
except Exception as e: |
674
|
|
|
raise HTTPException( |
675
|
|
|
status.HTTP_404_NOT_FOUND, |
676
|
|
|
f"Cannot get item {item} for key {key} in plugin {plugin} ({str(e)})", |
677
|
|
|
) |
678
|
|
|
|
679
|
|
|
return GlancesJSONResponse(ret) |
680
|
|
|
|
681
|
|
|
def _api_item_views(self, plugin: str, item: str): |
682
|
|
|
"""Glances API RESTful implementation. |
683
|
|
|
|
684
|
|
|
Return the JSON view representation of the couple plugin/item |
685
|
|
|
HTTP/200 if OK |
686
|
|
|
HTTP/400 if plugin is not found |
687
|
|
|
HTTP/404 if others error |
688
|
|
|
""" |
689
|
|
|
self._check_if_plugin_available(plugin) |
690
|
|
|
|
691
|
|
|
# Update the stat |
692
|
|
|
self.__update_stats() |
693
|
|
|
|
694
|
|
|
try: |
695
|
|
|
# Get the RAW value of the stat views |
696
|
|
|
ret = self.stats.get_plugin(plugin).get_views().get(item) |
697
|
|
|
except Exception as e: |
698
|
|
|
raise HTTPException( |
699
|
|
|
status.HTTP_404_NOT_FOUND, |
700
|
|
|
f"Cannot get item {item} in plugin view {plugin} ({str(e)})", |
701
|
|
|
) |
702
|
|
|
|
703
|
|
|
return GlancesJSONResponse(ret) |
704
|
|
|
|
705
|
|
|
def _api_key_views(self, plugin: str, item: str, key: str): |
706
|
|
|
"""Glances API RESTful implementation. |
707
|
|
|
|
708
|
|
|
Return the JSON view representation of plugin/item/key |
709
|
|
|
HTTP/200 if OK |
710
|
|
|
HTTP/400 if plugin is not found |
711
|
|
|
HTTP/404 if others error |
712
|
|
|
""" |
713
|
|
|
self._check_if_plugin_available(plugin) |
714
|
|
|
|
715
|
|
|
# Update the stat |
716
|
|
|
self.__update_stats() |
717
|
|
|
|
718
|
|
|
try: |
719
|
|
|
# Get the RAW value of the stat views |
720
|
|
|
ret = self.stats.get_plugin(plugin).get_views().get(key).get(item) |
721
|
|
|
except Exception as e: |
722
|
|
|
raise HTTPException( |
723
|
|
|
status.HTTP_404_NOT_FOUND, |
724
|
|
|
f"Cannot get item {item} for key {key} in plugin view {plugin} ({str(e)})", |
725
|
|
|
) |
726
|
|
|
|
727
|
|
|
return GlancesJSONResponse(ret) |
728
|
|
|
|
729
|
|
|
def _api_item_history(self, plugin: str, item: str, nb: int = 0): |
730
|
|
|
"""Glances API RESTful implementation. |
731
|
|
|
|
732
|
|
|
Return the JSON representation of the couple plugin/history of item |
733
|
|
|
HTTP/200 if OK |
734
|
|
|
HTTP/400 if plugin is not found |
735
|
|
|
HTTP/404 if others error |
736
|
|
|
|
737
|
|
|
""" |
738
|
|
|
self._check_if_plugin_available(plugin) |
739
|
|
|
|
740
|
|
|
# Update the stat |
741
|
|
|
self.__update_stats() |
742
|
|
|
|
743
|
|
|
try: |
744
|
|
|
# Get the RAW value of the stat history |
745
|
|
|
ret = self.stats.get_plugin(plugin).get_raw_history(item, nb=nb) |
746
|
|
|
except Exception as e: |
747
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get history for plugin {plugin} ({str(e)})") |
748
|
|
|
else: |
749
|
|
|
return GlancesJSONResponse(ret) |
750
|
|
|
|
751
|
|
|
def _api_item_description(self, plugin: str, item: str): |
752
|
|
|
"""Glances API RESTful implementation. |
753
|
|
|
|
754
|
|
|
Return the JSON representation of the couple plugin/item description |
755
|
|
|
HTTP/200 if OK |
756
|
|
|
HTTP/400 if plugin is not found |
757
|
|
|
HTTP/404 if others error |
758
|
|
|
""" |
759
|
|
|
self._check_if_plugin_available(plugin) |
760
|
|
|
|
761
|
|
|
try: |
762
|
|
|
# Get the description |
763
|
|
|
ret = self.stats.get_plugin(plugin).get_item_info(item, 'description') |
764
|
|
|
except Exception as e: |
765
|
|
|
raise HTTPException( |
766
|
|
|
status.HTTP_404_NOT_FOUND, f"Cannot get {item} description for plugin {plugin} ({str(e)})" |
767
|
|
|
) |
768
|
|
|
else: |
769
|
|
|
return GlancesJSONResponse(ret) |
770
|
|
|
|
771
|
|
|
def _api_item_unit(self, plugin: str, item: str): |
772
|
|
|
"""Glances API RESTful implementation. |
773
|
|
|
|
774
|
|
|
Return the JSON representation of the couple plugin/item unit |
775
|
|
|
HTTP/200 if OK |
776
|
|
|
HTTP/400 if plugin is not found |
777
|
|
|
HTTP/404 if others error |
778
|
|
|
""" |
779
|
|
|
self._check_if_plugin_available(plugin) |
780
|
|
|
|
781
|
|
|
try: |
782
|
|
|
# Get the unit |
783
|
|
|
ret = self.stats.get_plugin(plugin).get_item_info(item, 'unit') |
784
|
|
|
except Exception as e: |
785
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get {item} unit for plugin {plugin} ({str(e)})") |
786
|
|
|
else: |
787
|
|
|
return GlancesJSONResponse(ret) |
788
|
|
|
|
789
|
|
|
def _api_value(self, plugin: str, item: str, value: Union[str, int, float]): |
790
|
|
|
"""Glances API RESTful implementation. |
791
|
|
|
|
792
|
|
|
Return the process stats (dict) for the given item=value |
793
|
|
|
HTTP/200 if OK |
794
|
|
|
HTTP/400 if plugin is not found |
795
|
|
|
HTTP/404 if others error |
796
|
|
|
""" |
797
|
|
|
self._check_if_plugin_available(plugin) |
798
|
|
|
|
799
|
|
|
# Update the stat |
800
|
|
|
self.__update_stats() |
801
|
|
|
|
802
|
|
|
try: |
803
|
|
|
# Get the RAW value |
804
|
|
|
ret = self.stats.get_plugin(plugin).get_raw_stats_value(item, value) |
805
|
|
|
except Exception as e: |
806
|
|
|
raise HTTPException( |
807
|
|
|
status.HTTP_404_NOT_FOUND, f"Cannot get {item} = {value} for plugin {plugin} ({str(e)})" |
808
|
|
|
) |
809
|
|
|
else: |
810
|
|
|
return GlancesJSONResponse(ret) |
811
|
|
|
|
812
|
|
|
def _api_config(self): |
813
|
|
|
"""Glances API RESTful implementation. |
814
|
|
|
|
815
|
|
|
Return the JSON representation of the Glances configuration file |
816
|
|
|
HTTP/200 if OK |
817
|
|
|
HTTP/404 if others error |
818
|
|
|
""" |
819
|
|
|
try: |
820
|
|
|
# Get the RAW value of the config' dict |
821
|
|
|
args_json = self.config.as_dict() |
822
|
|
|
except Exception as e: |
823
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get config ({str(e)})") |
824
|
|
|
else: |
825
|
|
|
return GlancesJSONResponse(args_json) |
826
|
|
|
|
827
|
|
|
def _api_config_section(self, section: str): |
828
|
|
|
"""Glances API RESTful implementation. |
829
|
|
|
|
830
|
|
|
Return the JSON representation of the Glances configuration section |
831
|
|
|
HTTP/200 if OK |
832
|
|
|
HTTP/400 if item is not found |
833
|
|
|
HTTP/404 if others error |
834
|
|
|
""" |
835
|
|
|
config_dict = self.config.as_dict() |
836
|
|
|
if section not in config_dict: |
837
|
|
|
raise HTTPException(status.HTTP_400_BAD_REQUEST, f"Unknown configuration item {section}") |
838
|
|
|
|
839
|
|
|
try: |
840
|
|
|
# Get the RAW value of the config' dict |
841
|
|
|
ret_section = config_dict[section] |
842
|
|
|
except Exception as e: |
843
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get config section {section} ({str(e)})") |
844
|
|
|
|
845
|
|
|
return GlancesJSONResponse(ret_section) |
846
|
|
|
|
847
|
|
|
def _api_config_section_item(self, section: str, item: str): |
848
|
|
|
"""Glances API RESTful implementation. |
849
|
|
|
|
850
|
|
|
Return the JSON representation of the Glances configuration section/item |
851
|
|
|
HTTP/200 if OK |
852
|
|
|
HTTP/400 if item is not found |
853
|
|
|
HTTP/404 if others error |
854
|
|
|
""" |
855
|
|
|
config_dict = self.config.as_dict() |
856
|
|
|
if section not in config_dict: |
857
|
|
|
raise HTTPException(status.HTTP_400_BAD_REQUEST, f"Unknown configuration item {section}") |
858
|
|
|
|
859
|
|
|
try: |
860
|
|
|
# Get the RAW value of the config' dict section |
861
|
|
|
ret_section = config_dict[section] |
862
|
|
|
except Exception as e: |
863
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get config section {section} ({str(e)})") |
864
|
|
|
|
865
|
|
|
try: |
866
|
|
|
# Get the RAW value of the config' dict item |
867
|
|
|
ret_item = ret_section[item] |
868
|
|
|
except Exception as e: |
869
|
|
|
raise HTTPException( |
870
|
|
|
status.HTTP_404_NOT_FOUND, f"Cannot get item {item} in config section {section} ({str(e)})" |
871
|
|
|
) |
872
|
|
|
|
873
|
|
|
return GlancesJSONResponse(ret_item) |
874
|
|
|
|
875
|
|
|
def _api_args(self): |
876
|
|
|
"""Glances API RESTful implementation. |
877
|
|
|
|
878
|
|
|
Return the JSON representation of the Glances command line arguments |
879
|
|
|
HTTP/200 if OK |
880
|
|
|
HTTP/404 if others error |
881
|
|
|
""" |
882
|
|
|
try: |
883
|
|
|
# Get the RAW value of the args' dict |
884
|
|
|
# Use vars to convert namespace to dict |
885
|
|
|
# Source: https://docs.python.org/%s/library/functions.html#vars |
886
|
|
|
args_json = vars(self.args) |
887
|
|
|
except Exception as e: |
888
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get args ({str(e)})") |
889
|
|
|
|
890
|
|
|
return GlancesJSONResponse(args_json) |
891
|
|
|
|
892
|
|
|
def _api_args_item(self, item: str): |
893
|
|
|
"""Glances API RESTful implementation. |
894
|
|
|
|
895
|
|
|
Return the JSON representation of the Glances command line arguments item |
896
|
|
|
HTTP/200 if OK |
897
|
|
|
HTTP/400 if item is not found |
898
|
|
|
HTTP/404 if others error |
899
|
|
|
""" |
900
|
|
|
if item not in self.args: |
901
|
|
|
raise HTTPException(status.HTTP_400_BAD_REQUEST, f"Unknown argument item {item}") |
902
|
|
|
|
903
|
|
|
try: |
904
|
|
|
# Get the RAW value of the args' dict |
905
|
|
|
# Use vars to convert namespace to dict |
906
|
|
|
# Source: https://docs.python.org/%s/library/functions.html#vars |
907
|
|
|
args_json = vars(self.args)[item] |
908
|
|
|
except Exception as e: |
909
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get args item ({str(e)})") |
910
|
|
|
|
911
|
|
|
return GlancesJSONResponse(args_json) |
912
|
|
|
|
913
|
|
|
def _api_set_extended_processes(self, pid: str): |
914
|
|
|
"""Glances API RESTful implementation. |
915
|
|
|
|
916
|
|
|
Set the extended process stats for the given PID |
917
|
|
|
HTTP/200 if OK |
918
|
|
|
HTTP/400 if PID is not found |
919
|
|
|
HTTP/404 if others error |
920
|
|
|
""" |
921
|
|
|
process_stats = glances_processes.get_stats(int(pid)) |
922
|
|
|
|
923
|
|
|
if not process_stats: |
924
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Unknown PID process {pid}") |
925
|
|
|
|
926
|
|
|
glances_processes.extended_process = process_stats |
927
|
|
|
|
928
|
|
|
return GlancesJSONResponse(True) |
929
|
|
|
|
930
|
|
|
def _api_disable_extended_processes(self): |
931
|
|
|
"""Glances API RESTful implementation. |
932
|
|
|
|
933
|
|
|
Disable extended process stats |
934
|
|
|
HTTP/200 if OK |
935
|
|
|
HTTP/400 if PID is not found |
936
|
|
|
HTTP/404 if others error |
937
|
|
|
""" |
938
|
|
|
glances_processes.extended_process = None |
939
|
|
|
|
940
|
|
|
return GlancesJSONResponse(True) |
941
|
|
|
|
942
|
|
|
def _api_get_extended_processes(self): |
943
|
|
|
"""Glances API RESTful implementation. |
944
|
|
|
|
945
|
|
|
Get the extended process stats (if set before) |
946
|
|
|
HTTP/200 if OK |
947
|
|
|
HTTP/400 if PID is not found |
948
|
|
|
HTTP/404 if others error |
949
|
|
|
""" |
950
|
|
|
process_stats = glances_processes.get_extended_stats() |
951
|
|
|
|
952
|
|
|
if not process_stats: |
953
|
|
|
process_stats = {} |
954
|
|
|
|
955
|
|
|
return GlancesJSONResponse(process_stats) |
956
|
|
|
|
957
|
|
|
def _api_get_processes(self, pid: str): |
958
|
|
|
"""Glances API RESTful implementation. |
959
|
|
|
|
960
|
|
|
Get the process stats for the given PID |
961
|
|
|
HTTP/200 if OK |
962
|
|
|
HTTP/400 if PID is not found |
963
|
|
|
HTTP/404 if others error |
964
|
|
|
""" |
965
|
|
|
process_stats = glances_processes.get_stats(int(pid)) |
966
|
|
|
|
967
|
|
|
if not process_stats: |
968
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Unknown PID process {pid}") |
969
|
|
|
|
970
|
|
|
return GlancesJSONResponse(process_stats) |
971
|
|
|
|