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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, weak_lru_cache |
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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 GZIP compression |
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# https://fastapi.tiangolo.com/advanced/middleware/ |
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# Should be done before other middlewares to avoid |
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# LocalProtocolError("Too much data for declared Content-Length") |
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self._app.add_middleware(GZipMiddleware, minimum_size=1000) |
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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 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 |
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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: |
|
294
|
|
|
logger.info('The WebUI is disable (--disable-webui)') |
|
295
|
|
|
|
|
296
|
|
|
# Restful API |
|
297
|
|
|
bindmsg = f'Glances RESTful API Server started on {self.bind_url}api/{self.API_VERSION}' |
|
298
|
|
|
logger.info(bindmsg) |
|
299
|
|
|
print(bindmsg) |
|
300
|
|
|
|
|
301
|
|
|
return router |
|
302
|
|
|
|
|
303
|
|
|
def start(self, stats: GlancesStats) -> None: |
|
304
|
|
|
"""Start the bottle.""" |
|
305
|
|
|
# Init stats |
|
306
|
|
|
self.stats = stats |
|
307
|
|
|
|
|
308
|
|
|
# Init plugin list |
|
309
|
|
|
self.plugins_list = self.stats.getPluginsList() |
|
310
|
|
|
|
|
311
|
|
|
if self.args.open_web_browser: |
|
312
|
|
|
# Implementation of the issue #946 |
|
313
|
|
|
# Try to open the Glances Web UI in the default Web browser if: |
|
314
|
|
|
# 1) --open-web-browser option is used |
|
315
|
|
|
# 2) Glances standalone mode is running on Windows OS |
|
316
|
|
|
webbrowser.open(self.bind_url, new=2, autoraise=1) |
|
317
|
|
|
|
|
318
|
|
|
# Start Uvicorn server |
|
319
|
|
|
self._start_uvicorn() |
|
320
|
|
|
|
|
321
|
|
|
def _start_uvicorn(self): |
|
322
|
|
|
# Run the Uvicorn Web server |
|
323
|
|
|
uvicorn_config = uvicorn.Config( |
|
324
|
|
|
self._app, host=self.args.bind_address, port=self.args.port, access_log=self.args.debug |
|
325
|
|
|
) |
|
326
|
|
|
try: |
|
327
|
|
|
self.uvicorn_server = GlancesUvicornServer(config=uvicorn_config) |
|
328
|
|
|
except Exception as e: |
|
329
|
|
|
logger.critical(f'Error: Can not ran Glances Web server ({e})') |
|
330
|
|
|
self.uvicorn_server = None |
|
331
|
|
|
else: |
|
332
|
|
|
with self.uvicorn_server.run_in_thread(): |
|
333
|
|
|
while not self.uvicorn_server.should_exit: |
|
334
|
|
|
time.sleep(1) |
|
335
|
|
|
|
|
336
|
|
|
def end(self): |
|
337
|
|
|
"""End the Web server""" |
|
338
|
|
|
if not self.args.disable_autodiscover and self.autodiscover_client: |
|
339
|
|
|
self.autodiscover_client.close() |
|
340
|
|
|
logger.info("Close the Web server") |
|
341
|
|
|
|
|
342
|
|
|
def _index(self, request: Request): |
|
343
|
|
|
"""Return main index.html (/) file. |
|
344
|
|
|
|
|
345
|
|
|
Parameters are available through the request object. |
|
346
|
|
|
Example: http://localhost:61208/?refresh=5 |
|
347
|
|
|
|
|
348
|
|
|
Note: This function is only called the first time the page is loaded. |
|
349
|
|
|
""" |
|
350
|
|
|
refresh_time = request.query_params.get('refresh', default=max(1, int(self.args.time))) |
|
351
|
|
|
|
|
352
|
|
|
# Update the stat |
|
353
|
|
|
self.__update_stats() |
|
354
|
|
|
|
|
355
|
|
|
# Display |
|
356
|
|
|
return self._templates.TemplateResponse("index.html", {"request": request, "refresh_time": refresh_time}) |
|
357
|
|
|
|
|
358
|
|
|
def _browser(self, request: Request): |
|
359
|
|
|
"""Return main browser.html (/browser) file. |
|
360
|
|
|
|
|
361
|
|
|
Note: This function is only called the first time the page is loaded. |
|
362
|
|
|
""" |
|
363
|
|
|
refresh_time = request.query_params.get('refresh', default=max(1, int(self.args.time))) |
|
364
|
|
|
|
|
365
|
|
|
# Display |
|
366
|
|
|
return self._templates.TemplateResponse("browser.html", {"request": request, "refresh_time": refresh_time}) |
|
367
|
|
|
|
|
368
|
|
|
def _api_status(self): |
|
369
|
|
|
"""Glances API RESTful implementation. |
|
370
|
|
|
|
|
371
|
|
|
Return a 200 status code. |
|
372
|
|
|
This entry point should be used to check the API health. |
|
373
|
|
|
|
|
374
|
|
|
See related issue: Web server health check endpoint #1988 |
|
375
|
|
|
""" |
|
376
|
|
|
|
|
377
|
|
|
return GlancesJSONResponse({'version': __version__}) |
|
378
|
|
|
|
|
379
|
|
|
def _events_clear_warning(self): |
|
380
|
|
|
"""Glances API RESTful implementation. |
|
381
|
|
|
|
|
382
|
|
|
Return a 200 status code. |
|
383
|
|
|
|
|
384
|
|
|
It's a post message to clean warning events |
|
385
|
|
|
""" |
|
386
|
|
|
glances_events.clean() |
|
387
|
|
|
return GlancesJSONResponse({}) |
|
388
|
|
|
|
|
389
|
|
|
def _events_clear_all(self): |
|
390
|
|
|
"""Glances API RESTful implementation. |
|
391
|
|
|
|
|
392
|
|
|
Return a 200 status code. |
|
393
|
|
|
|
|
394
|
|
|
It's a post message to clean all events |
|
395
|
|
|
""" |
|
396
|
|
|
glances_events.clean(critical=True) |
|
397
|
|
|
return GlancesJSONResponse({}) |
|
398
|
|
|
|
|
399
|
|
|
def _api_help(self): |
|
400
|
|
|
"""Glances API RESTful implementation. |
|
401
|
|
|
|
|
402
|
|
|
Return the help data or 404 error. |
|
403
|
|
|
""" |
|
404
|
|
|
try: |
|
405
|
|
|
plist = self.stats.get_plugin("help").get_view_data() |
|
406
|
|
|
except Exception as e: |
|
407
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get help view data ({str(e)})") |
|
408
|
|
|
|
|
409
|
|
|
return GlancesJSONResponse(plist) |
|
410
|
|
|
|
|
411
|
|
|
def _api_plugins(self): |
|
412
|
|
|
"""Glances API RESTFul implementation. |
|
413
|
|
|
|
|
414
|
|
|
@api {get} /api/%s/pluginslist Get plugins list |
|
415
|
|
|
@apiVersion 2.0 |
|
416
|
|
|
@apiName pluginslist |
|
417
|
|
|
@apiGroup plugin |
|
418
|
|
|
|
|
419
|
|
|
@apiSuccess {String[]} Plugins list. |
|
420
|
|
|
|
|
421
|
|
|
@apiSuccessExample Success-Response: |
|
422
|
|
|
HTTP/1.1 200 OK |
|
423
|
|
|
[ |
|
424
|
|
|
"load", |
|
425
|
|
|
"help", |
|
426
|
|
|
"ip", |
|
427
|
|
|
"memswap", |
|
428
|
|
|
"processlist", |
|
429
|
|
|
... |
|
430
|
|
|
] |
|
431
|
|
|
|
|
432
|
|
|
@apiError Cannot get plugin list. |
|
433
|
|
|
|
|
434
|
|
|
@apiErrorExample Error-Response: |
|
435
|
|
|
HTTP/1.1 404 Not Found |
|
436
|
|
|
""" |
|
437
|
|
|
# Update the stat |
|
438
|
|
|
self.__update_stats() |
|
439
|
|
|
|
|
440
|
|
|
try: |
|
441
|
|
|
plist = self.plugins_list |
|
442
|
|
|
except Exception as e: |
|
443
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get plugin list ({str(e)})") |
|
444
|
|
|
|
|
445
|
|
|
return GlancesJSONResponse(plist) |
|
446
|
|
|
|
|
447
|
|
|
def _api_servers_list(self): |
|
448
|
|
|
"""Glances API RESTful implementation. |
|
449
|
|
|
|
|
450
|
|
|
Return the JSON representation of the servers list (for browser mode) |
|
451
|
|
|
HTTP/200 if OK |
|
452
|
|
|
""" |
|
453
|
|
|
# Update the servers list (and the stats for all the servers) |
|
454
|
|
|
self.__update_servers_list() |
|
455
|
|
|
|
|
456
|
|
|
return GlancesJSONResponse(self.servers_list.get_servers_list() if self.servers_list else []) |
|
457
|
|
|
|
|
458
|
|
|
@weak_lru_cache(maxsize=1, ttl=1) |
|
459
|
|
|
def _api_all(self): |
|
460
|
|
|
"""Glances API RESTful implementation. |
|
461
|
|
|
|
|
462
|
|
|
Return the JSON representation of all the plugins |
|
463
|
|
|
HTTP/200 if OK |
|
464
|
|
|
HTTP/400 if plugin is not found |
|
465
|
|
|
HTTP/404 if others error |
|
466
|
|
|
""" |
|
467
|
|
|
if self.args.debug: |
|
468
|
|
|
fname = os.path.join(tempfile.gettempdir(), 'glances-debug.json') |
|
469
|
|
|
try: |
|
470
|
|
|
with builtins.open(fname) as f: |
|
471
|
|
|
return f.read() |
|
472
|
|
|
except OSError: |
|
473
|
|
|
logger.debug(f"Debug file ({fname}) not found") |
|
474
|
|
|
|
|
475
|
|
|
# Update the stat |
|
476
|
|
|
self.__update_stats() |
|
477
|
|
|
|
|
478
|
|
|
try: |
|
479
|
|
|
# Get the RAW value of the stat ID |
|
480
|
|
|
statval = self.stats.getAllAsDict() |
|
481
|
|
|
except Exception as e: |
|
482
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get stats ({str(e)})") |
|
483
|
|
|
|
|
484
|
|
|
return GlancesJSONResponse(statval) |
|
485
|
|
|
|
|
486
|
|
|
@weak_lru_cache(maxsize=1, ttl=1) |
|
487
|
|
|
def _api_all_limits(self): |
|
488
|
|
|
"""Glances API RESTful implementation. |
|
489
|
|
|
|
|
490
|
|
|
Return the JSON representation of all the plugins limits |
|
491
|
|
|
HTTP/200 if OK |
|
492
|
|
|
HTTP/400 if plugin is not found |
|
493
|
|
|
HTTP/404 if others error |
|
494
|
|
|
""" |
|
495
|
|
|
try: |
|
496
|
|
|
# Get the RAW value of the stat limits |
|
497
|
|
|
limits = self.stats.getAllLimitsAsDict() |
|
498
|
|
|
except Exception as e: |
|
499
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get limits ({str(e)})") |
|
500
|
|
|
|
|
501
|
|
|
return GlancesJSONResponse(limits) |
|
502
|
|
|
|
|
503
|
|
|
@weak_lru_cache(maxsize=1, ttl=1) |
|
504
|
|
|
def _api_all_views(self): |
|
505
|
|
|
"""Glances API RESTful implementation. |
|
506
|
|
|
|
|
507
|
|
|
Return the JSON representation of all the plugins views |
|
508
|
|
|
HTTP/200 if OK |
|
509
|
|
|
HTTP/400 if plugin is not found |
|
510
|
|
|
HTTP/404 if others error |
|
511
|
|
|
""" |
|
512
|
|
|
try: |
|
513
|
|
|
# Get the RAW value of the stat view |
|
514
|
|
|
limits = self.stats.getAllViewsAsDict() |
|
515
|
|
|
except Exception as e: |
|
516
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get views ({str(e)})") |
|
517
|
|
|
|
|
518
|
|
|
return GlancesJSONResponse(limits) |
|
519
|
|
|
|
|
520
|
|
|
@weak_lru_cache(maxsize=1, ttl=1) |
|
521
|
|
|
def _api(self, plugin: str): |
|
522
|
|
|
"""Glances API RESTful implementation. |
|
523
|
|
|
|
|
524
|
|
|
Return the JSON representation of a given plugin |
|
525
|
|
|
HTTP/200 if OK |
|
526
|
|
|
HTTP/400 if plugin is not found |
|
527
|
|
|
HTTP/404 if others error |
|
528
|
|
|
""" |
|
529
|
|
|
self._check_if_plugin_available(plugin) |
|
530
|
|
|
|
|
531
|
|
|
# Update the stat |
|
532
|
|
|
self.__update_stats() |
|
533
|
|
|
|
|
534
|
|
|
try: |
|
535
|
|
|
# Get the RAW value of the stat ID |
|
536
|
|
|
statval = self.stats.get_plugin(plugin).get_raw() |
|
537
|
|
|
except Exception as e: |
|
538
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get plugin {plugin} ({str(e)})") |
|
539
|
|
|
|
|
540
|
|
|
return GlancesJSONResponse(statval) |
|
541
|
|
|
|
|
542
|
|
|
def _check_if_plugin_available(self, plugin: str) -> None: |
|
543
|
|
|
if plugin in self.plugins_list: |
|
544
|
|
|
return |
|
545
|
|
|
|
|
546
|
|
|
raise HTTPException( |
|
547
|
|
|
status.HTTP_400_BAD_REQUEST, f"Unknown plugin {plugin} (available plugins: {self.plugins_list})" |
|
548
|
|
|
) |
|
549
|
|
|
|
|
550
|
|
|
@weak_lru_cache(maxsize=1, ttl=1) |
|
551
|
|
|
def _api_top(self, plugin: str, nb: int = 0): |
|
552
|
|
|
"""Glances API RESTful implementation. |
|
553
|
|
|
|
|
554
|
|
|
Return the JSON representation of a given plugin limited to the top nb items. |
|
555
|
|
|
It is used to reduce the payload of the HTTP response (example: processlist). |
|
556
|
|
|
|
|
557
|
|
|
HTTP/200 if OK |
|
558
|
|
|
HTTP/400 if plugin is not found |
|
559
|
|
|
HTTP/404 if others error |
|
560
|
|
|
""" |
|
561
|
|
|
self._check_if_plugin_available(plugin) |
|
562
|
|
|
|
|
563
|
|
|
# Update the stat |
|
564
|
|
|
self.__update_stats() |
|
565
|
|
|
|
|
566
|
|
|
try: |
|
567
|
|
|
# Get the RAW value of the stat ID |
|
568
|
|
|
statval = self.stats.get_plugin(plugin).get_raw() |
|
569
|
|
|
except Exception as e: |
|
570
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get plugin {plugin} ({str(e)})") |
|
571
|
|
|
|
|
572
|
|
|
print(statval) |
|
573
|
|
|
|
|
574
|
|
|
if isinstance(statval, list): |
|
575
|
|
|
statval = statval[:nb] |
|
576
|
|
|
|
|
577
|
|
|
return GlancesJSONResponse(statval) |
|
578
|
|
|
|
|
579
|
|
|
@weak_lru_cache(maxsize=1, ttl=1) |
|
580
|
|
|
def _api_history(self, plugin: str, nb: int = 0): |
|
581
|
|
|
"""Glances API RESTful implementation. |
|
582
|
|
|
|
|
583
|
|
|
Return the JSON representation of a given plugin history |
|
584
|
|
|
Limit to the last nb items (all if nb=0) |
|
585
|
|
|
HTTP/200 if OK |
|
586
|
|
|
HTTP/400 if plugin is not found |
|
587
|
|
|
HTTP/404 if others error |
|
588
|
|
|
""" |
|
589
|
|
|
self._check_if_plugin_available(plugin) |
|
590
|
|
|
|
|
591
|
|
|
# Update the stat |
|
592
|
|
|
self.__update_stats() |
|
593
|
|
|
|
|
594
|
|
|
try: |
|
595
|
|
|
# Get the RAW value of the stat ID |
|
596
|
|
|
statval = self.stats.get_plugin(plugin).get_raw_history(nb=int(nb)) |
|
597
|
|
|
except Exception as e: |
|
598
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get plugin history {plugin} ({str(e)})") |
|
599
|
|
|
|
|
600
|
|
|
return statval |
|
601
|
|
|
|
|
602
|
|
|
@weak_lru_cache(maxsize=1, ttl=1) |
|
603
|
|
|
def _api_limits(self, plugin: str): |
|
604
|
|
|
"""Glances API RESTful implementation. |
|
605
|
|
|
|
|
606
|
|
|
Return the JSON limits of a given plugin |
|
607
|
|
|
HTTP/200 if OK |
|
608
|
|
|
HTTP/400 if plugin is not found |
|
609
|
|
|
HTTP/404 if others error |
|
610
|
|
|
""" |
|
611
|
|
|
self._check_if_plugin_available(plugin) |
|
612
|
|
|
|
|
613
|
|
|
try: |
|
614
|
|
|
# Get the RAW value of the stat limits |
|
615
|
|
|
ret = self.stats.get_plugin(plugin).limits |
|
616
|
|
|
except Exception as e: |
|
617
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get limits for plugin {plugin} ({str(e)})") |
|
618
|
|
|
|
|
619
|
|
|
return GlancesJSONResponse(ret) |
|
620
|
|
|
|
|
621
|
|
|
@weak_lru_cache(maxsize=1, ttl=1) |
|
622
|
|
|
def _api_views(self, plugin: str): |
|
623
|
|
|
"""Glances API RESTful implementation. |
|
624
|
|
|
|
|
625
|
|
|
Return the JSON views of a given plugin |
|
626
|
|
|
HTTP/200 if OK |
|
627
|
|
|
HTTP/400 if plugin is not found |
|
628
|
|
|
HTTP/404 if others error |
|
629
|
|
|
""" |
|
630
|
|
|
if plugin not in self.plugins_list: |
|
631
|
|
|
raise HTTPException( |
|
632
|
|
|
status.HTTP_400_BAD_REQUEST, f"Unknown plugin {plugin} (available plugins: {self.plugins_list})" |
|
633
|
|
|
) |
|
634
|
|
|
|
|
635
|
|
|
try: |
|
636
|
|
|
# Get the RAW value of the stat views |
|
637
|
|
|
ret = self.stats.get_plugin(plugin).get_views() |
|
638
|
|
|
except Exception as e: |
|
639
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get views for plugin {plugin} ({str(e)})") |
|
640
|
|
|
|
|
641
|
|
|
return GlancesJSONResponse(ret) |
|
642
|
|
|
|
|
643
|
|
|
def _api_item(self, plugin: str, item: str): |
|
644
|
|
|
"""Glances API RESTful implementation. |
|
645
|
|
|
|
|
646
|
|
|
Return the JSON representation of the couple plugin/item |
|
647
|
|
|
HTTP/200 if OK |
|
648
|
|
|
HTTP/400 if plugin is not found |
|
649
|
|
|
HTTP/404 if others error |
|
650
|
|
|
""" |
|
651
|
|
|
self._check_if_plugin_available(plugin) |
|
652
|
|
|
|
|
653
|
|
|
# Update the stat |
|
654
|
|
|
self.__update_stats() |
|
655
|
|
|
|
|
656
|
|
|
try: |
|
657
|
|
|
# Get the RAW value of the stat views |
|
658
|
|
|
ret = self.stats.get_plugin(plugin).get_raw_stats_item(item) |
|
659
|
|
|
except Exception as e: |
|
660
|
|
|
raise HTTPException( |
|
661
|
|
|
status.HTTP_404_NOT_FOUND, |
|
662
|
|
|
f"Cannot get item {item} in plugin {plugin} ({str(e)})", |
|
663
|
|
|
) |
|
664
|
|
|
|
|
665
|
|
|
return GlancesJSONResponse(ret) |
|
666
|
|
|
|
|
667
|
|
|
def _api_key(self, plugin: str, item: str, key: str): |
|
668
|
|
|
"""Glances API RESTful implementation. |
|
669
|
|
|
|
|
670
|
|
|
Return the JSON representation of plugin/item/key |
|
671
|
|
|
HTTP/200 if OK |
|
672
|
|
|
HTTP/400 if plugin is not found |
|
673
|
|
|
HTTP/404 if others error |
|
674
|
|
|
""" |
|
675
|
|
|
self._check_if_plugin_available(plugin) |
|
676
|
|
|
|
|
677
|
|
|
# Update the stat |
|
678
|
|
|
self.__update_stats() |
|
679
|
|
|
|
|
680
|
|
|
try: |
|
681
|
|
|
# Get the RAW value of the stat views |
|
682
|
|
|
ret = self.stats.get_plugin(plugin).get_raw_stats_key(item, key) |
|
683
|
|
|
except Exception as e: |
|
684
|
|
|
raise HTTPException( |
|
685
|
|
|
status.HTTP_404_NOT_FOUND, |
|
686
|
|
|
f"Cannot get item {item} for key {key} in plugin {plugin} ({str(e)})", |
|
687
|
|
|
) |
|
688
|
|
|
|
|
689
|
|
|
return GlancesJSONResponse(ret) |
|
690
|
|
|
|
|
691
|
|
|
def _api_item_views(self, plugin: str, item: str): |
|
692
|
|
|
"""Glances API RESTful implementation. |
|
693
|
|
|
|
|
694
|
|
|
Return the JSON view representation of the couple plugin/item |
|
695
|
|
|
HTTP/200 if OK |
|
696
|
|
|
HTTP/400 if plugin is not found |
|
697
|
|
|
HTTP/404 if others error |
|
698
|
|
|
""" |
|
699
|
|
|
self._check_if_plugin_available(plugin) |
|
700
|
|
|
|
|
701
|
|
|
# Update the stat |
|
702
|
|
|
self.__update_stats() |
|
703
|
|
|
|
|
704
|
|
|
try: |
|
705
|
|
|
# Get the RAW value of the stat views |
|
706
|
|
|
ret = self.stats.get_plugin(plugin).get_views().get(item) |
|
707
|
|
|
except Exception as e: |
|
708
|
|
|
raise HTTPException( |
|
709
|
|
|
status.HTTP_404_NOT_FOUND, |
|
710
|
|
|
f"Cannot get item {item} in plugin view {plugin} ({str(e)})", |
|
711
|
|
|
) |
|
712
|
|
|
|
|
713
|
|
|
return GlancesJSONResponse(ret) |
|
714
|
|
|
|
|
715
|
|
|
def _api_key_views(self, plugin: str, item: str, key: str): |
|
716
|
|
|
"""Glances API RESTful implementation. |
|
717
|
|
|
|
|
718
|
|
|
Return the JSON view representation of plugin/item/key |
|
719
|
|
|
HTTP/200 if OK |
|
720
|
|
|
HTTP/400 if plugin is not found |
|
721
|
|
|
HTTP/404 if others error |
|
722
|
|
|
""" |
|
723
|
|
|
self._check_if_plugin_available(plugin) |
|
724
|
|
|
|
|
725
|
|
|
# Update the stat |
|
726
|
|
|
self.__update_stats() |
|
727
|
|
|
|
|
728
|
|
|
try: |
|
729
|
|
|
# Get the RAW value of the stat views |
|
730
|
|
|
ret = self.stats.get_plugin(plugin).get_views().get(key).get(item) |
|
731
|
|
|
except Exception as e: |
|
732
|
|
|
raise HTTPException( |
|
733
|
|
|
status.HTTP_404_NOT_FOUND, |
|
734
|
|
|
f"Cannot get item {item} for key {key} in plugin view {plugin} ({str(e)})", |
|
735
|
|
|
) |
|
736
|
|
|
|
|
737
|
|
|
return GlancesJSONResponse(ret) |
|
738
|
|
|
|
|
739
|
|
|
def _api_item_history(self, plugin: str, item: str, nb: int = 0): |
|
740
|
|
|
"""Glances API RESTful implementation. |
|
741
|
|
|
|
|
742
|
|
|
Return the JSON representation of the couple plugin/history of item |
|
743
|
|
|
HTTP/200 if OK |
|
744
|
|
|
HTTP/400 if plugin is not found |
|
745
|
|
|
HTTP/404 if others error |
|
746
|
|
|
|
|
747
|
|
|
""" |
|
748
|
|
|
self._check_if_plugin_available(plugin) |
|
749
|
|
|
|
|
750
|
|
|
# Update the stat |
|
751
|
|
|
self.__update_stats() |
|
752
|
|
|
|
|
753
|
|
|
try: |
|
754
|
|
|
# Get the RAW value of the stat history |
|
755
|
|
|
ret = self.stats.get_plugin(plugin).get_raw_history(item, nb=nb) |
|
756
|
|
|
except Exception as e: |
|
757
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get history for plugin {plugin} ({str(e)})") |
|
758
|
|
|
else: |
|
759
|
|
|
return GlancesJSONResponse(ret) |
|
760
|
|
|
|
|
761
|
|
|
def _api_item_description(self, plugin: str, item: str): |
|
762
|
|
|
"""Glances API RESTful implementation. |
|
763
|
|
|
|
|
764
|
|
|
Return the JSON representation of the couple plugin/item description |
|
765
|
|
|
HTTP/200 if OK |
|
766
|
|
|
HTTP/400 if plugin is not found |
|
767
|
|
|
HTTP/404 if others error |
|
768
|
|
|
""" |
|
769
|
|
|
self._check_if_plugin_available(plugin) |
|
770
|
|
|
|
|
771
|
|
|
try: |
|
772
|
|
|
# Get the description |
|
773
|
|
|
ret = self.stats.get_plugin(plugin).get_item_info(item, 'description') |
|
774
|
|
|
except Exception as e: |
|
775
|
|
|
raise HTTPException( |
|
776
|
|
|
status.HTTP_404_NOT_FOUND, f"Cannot get {item} description for plugin {plugin} ({str(e)})" |
|
777
|
|
|
) |
|
778
|
|
|
else: |
|
779
|
|
|
return GlancesJSONResponse(ret) |
|
780
|
|
|
|
|
781
|
|
|
def _api_item_unit(self, plugin: str, item: str): |
|
782
|
|
|
"""Glances API RESTful implementation. |
|
783
|
|
|
|
|
784
|
|
|
Return the JSON representation of the couple plugin/item unit |
|
785
|
|
|
HTTP/200 if OK |
|
786
|
|
|
HTTP/400 if plugin is not found |
|
787
|
|
|
HTTP/404 if others error |
|
788
|
|
|
""" |
|
789
|
|
|
self._check_if_plugin_available(plugin) |
|
790
|
|
|
|
|
791
|
|
|
try: |
|
792
|
|
|
# Get the unit |
|
793
|
|
|
ret = self.stats.get_plugin(plugin).get_item_info(item, 'unit') |
|
794
|
|
|
except Exception as e: |
|
795
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get {item} unit for plugin {plugin} ({str(e)})") |
|
796
|
|
|
else: |
|
797
|
|
|
return GlancesJSONResponse(ret) |
|
798
|
|
|
|
|
799
|
|
|
def _api_value(self, plugin: str, item: str, value: Union[str, int, float]): |
|
800
|
|
|
"""Glances API RESTful implementation. |
|
801
|
|
|
|
|
802
|
|
|
Return the process stats (dict) for the given item=value |
|
803
|
|
|
HTTP/200 if OK |
|
804
|
|
|
HTTP/400 if plugin is not found |
|
805
|
|
|
HTTP/404 if others error |
|
806
|
|
|
""" |
|
807
|
|
|
self._check_if_plugin_available(plugin) |
|
808
|
|
|
|
|
809
|
|
|
# Update the stat |
|
810
|
|
|
self.__update_stats() |
|
811
|
|
|
|
|
812
|
|
|
try: |
|
813
|
|
|
# Get the RAW value |
|
814
|
|
|
ret = self.stats.get_plugin(plugin).get_raw_stats_value(item, value) |
|
815
|
|
|
except Exception as e: |
|
816
|
|
|
raise HTTPException( |
|
817
|
|
|
status.HTTP_404_NOT_FOUND, f"Cannot get {item} = {value} for plugin {plugin} ({str(e)})" |
|
818
|
|
|
) |
|
819
|
|
|
else: |
|
820
|
|
|
return GlancesJSONResponse(ret) |
|
821
|
|
|
|
|
822
|
|
|
def _api_config(self): |
|
823
|
|
|
"""Glances API RESTful implementation. |
|
824
|
|
|
|
|
825
|
|
|
Return the JSON representation of the Glances configuration file |
|
826
|
|
|
HTTP/200 if OK |
|
827
|
|
|
HTTP/404 if others error |
|
828
|
|
|
""" |
|
829
|
|
|
try: |
|
830
|
|
|
# Get the RAW value of the config' dict |
|
831
|
|
|
args_json = self.config.as_dict() |
|
832
|
|
|
except Exception as e: |
|
833
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get config ({str(e)})") |
|
834
|
|
|
else: |
|
835
|
|
|
return GlancesJSONResponse(args_json) |
|
836
|
|
|
|
|
837
|
|
|
def _api_config_section(self, section: str): |
|
838
|
|
|
"""Glances API RESTful implementation. |
|
839
|
|
|
|
|
840
|
|
|
Return the JSON representation of the Glances configuration section |
|
841
|
|
|
HTTP/200 if OK |
|
842
|
|
|
HTTP/400 if item is not found |
|
843
|
|
|
HTTP/404 if others error |
|
844
|
|
|
""" |
|
845
|
|
|
config_dict = self.config.as_dict() |
|
846
|
|
|
if section not in config_dict: |
|
847
|
|
|
raise HTTPException(status.HTTP_400_BAD_REQUEST, f"Unknown configuration item {section}") |
|
848
|
|
|
|
|
849
|
|
|
try: |
|
850
|
|
|
# Get the RAW value of the config' dict |
|
851
|
|
|
ret_section = config_dict[section] |
|
852
|
|
|
except Exception as e: |
|
853
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get config section {section} ({str(e)})") |
|
854
|
|
|
|
|
855
|
|
|
return GlancesJSONResponse(ret_section) |
|
856
|
|
|
|
|
857
|
|
|
def _api_config_section_item(self, section: str, item: str): |
|
858
|
|
|
"""Glances API RESTful implementation. |
|
859
|
|
|
|
|
860
|
|
|
Return the JSON representation of the Glances configuration section/item |
|
861
|
|
|
HTTP/200 if OK |
|
862
|
|
|
HTTP/400 if item is not found |
|
863
|
|
|
HTTP/404 if others error |
|
864
|
|
|
""" |
|
865
|
|
|
config_dict = self.config.as_dict() |
|
866
|
|
|
if section not in config_dict: |
|
867
|
|
|
raise HTTPException(status.HTTP_400_BAD_REQUEST, f"Unknown configuration item {section}") |
|
868
|
|
|
|
|
869
|
|
|
try: |
|
870
|
|
|
# Get the RAW value of the config' dict section |
|
871
|
|
|
ret_section = config_dict[section] |
|
872
|
|
|
except Exception as e: |
|
873
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get config section {section} ({str(e)})") |
|
874
|
|
|
|
|
875
|
|
|
try: |
|
876
|
|
|
# Get the RAW value of the config' dict item |
|
877
|
|
|
ret_item = ret_section[item] |
|
878
|
|
|
except Exception as e: |
|
879
|
|
|
raise HTTPException( |
|
880
|
|
|
status.HTTP_404_NOT_FOUND, f"Cannot get item {item} in config section {section} ({str(e)})" |
|
881
|
|
|
) |
|
882
|
|
|
|
|
883
|
|
|
return GlancesJSONResponse(ret_item) |
|
884
|
|
|
|
|
885
|
|
|
def _api_args(self): |
|
886
|
|
|
"""Glances API RESTful implementation. |
|
887
|
|
|
|
|
888
|
|
|
Return the JSON representation of the Glances command line arguments |
|
889
|
|
|
HTTP/200 if OK |
|
890
|
|
|
HTTP/404 if others error |
|
891
|
|
|
""" |
|
892
|
|
|
try: |
|
893
|
|
|
# Get the RAW value of the args' dict |
|
894
|
|
|
# Use vars to convert namespace to dict |
|
895
|
|
|
# Source: https://docs.python.org/%s/library/functions.html#vars |
|
896
|
|
|
args_json = vars(self.args) |
|
897
|
|
|
except Exception as e: |
|
898
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get args ({str(e)})") |
|
899
|
|
|
|
|
900
|
|
|
return GlancesJSONResponse(args_json) |
|
901
|
|
|
|
|
902
|
|
|
def _api_args_item(self, item: str): |
|
903
|
|
|
"""Glances API RESTful implementation. |
|
904
|
|
|
|
|
905
|
|
|
Return the JSON representation of the Glances command line arguments item |
|
906
|
|
|
HTTP/200 if OK |
|
907
|
|
|
HTTP/400 if item is not found |
|
908
|
|
|
HTTP/404 if others error |
|
909
|
|
|
""" |
|
910
|
|
|
if item not in self.args: |
|
911
|
|
|
raise HTTPException(status.HTTP_400_BAD_REQUEST, f"Unknown argument item {item}") |
|
912
|
|
|
|
|
913
|
|
|
try: |
|
914
|
|
|
# Get the RAW value of the args' dict |
|
915
|
|
|
# Use vars to convert namespace to dict |
|
916
|
|
|
# Source: https://docs.python.org/%s/library/functions.html#vars |
|
917
|
|
|
args_json = vars(self.args)[item] |
|
918
|
|
|
except Exception as e: |
|
919
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get args item ({str(e)})") |
|
920
|
|
|
|
|
921
|
|
|
return GlancesJSONResponse(args_json) |
|
922
|
|
|
|
|
923
|
|
|
def _api_set_extended_processes(self, pid: str): |
|
924
|
|
|
"""Glances API RESTful implementation. |
|
925
|
|
|
|
|
926
|
|
|
Set the extended process stats for the given PID |
|
927
|
|
|
HTTP/200 if OK |
|
928
|
|
|
HTTP/400 if PID is not found |
|
929
|
|
|
HTTP/404 if others error |
|
930
|
|
|
""" |
|
931
|
|
|
process_stats = glances_processes.get_stats(int(pid)) |
|
932
|
|
|
|
|
933
|
|
|
if not process_stats: |
|
934
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Unknown PID process {pid}") |
|
935
|
|
|
|
|
936
|
|
|
glances_processes.extended_process = process_stats |
|
937
|
|
|
|
|
938
|
|
|
return GlancesJSONResponse(True) |
|
939
|
|
|
|
|
940
|
|
|
def _api_disable_extended_processes(self): |
|
941
|
|
|
"""Glances API RESTful implementation. |
|
942
|
|
|
|
|
943
|
|
|
Disable extended process stats |
|
944
|
|
|
HTTP/200 if OK |
|
945
|
|
|
HTTP/400 if PID is not found |
|
946
|
|
|
HTTP/404 if others error |
|
947
|
|
|
""" |
|
948
|
|
|
glances_processes.extended_process = None |
|
949
|
|
|
|
|
950
|
|
|
return GlancesJSONResponse(True) |
|
951
|
|
|
|
|
952
|
|
|
def _api_get_extended_processes(self): |
|
953
|
|
|
"""Glances API RESTful implementation. |
|
954
|
|
|
|
|
955
|
|
|
Get the extended process stats (if set before) |
|
956
|
|
|
HTTP/200 if OK |
|
957
|
|
|
HTTP/400 if PID is not found |
|
958
|
|
|
HTTP/404 if others error |
|
959
|
|
|
""" |
|
960
|
|
|
process_stats = glances_processes.get_extended_stats() |
|
961
|
|
|
|
|
962
|
|
|
if not process_stats: |
|
963
|
|
|
process_stats = {} |
|
964
|
|
|
|
|
965
|
|
|
return GlancesJSONResponse(process_stats) |
|
966
|
|
|
|
|
967
|
|
|
def _api_get_processes(self, pid: str): |
|
968
|
|
|
"""Glances API RESTful implementation. |
|
969
|
|
|
|
|
970
|
|
|
Get the process stats for the given PID |
|
971
|
|
|
HTTP/200 if OK |
|
972
|
|
|
HTTP/400 if PID is not found |
|
973
|
|
|
HTTP/404 if others error |
|
974
|
|
|
""" |
|
975
|
|
|
process_stats = glances_processes.get_stats(int(pid)) |
|
976
|
|
|
|
|
977
|
|
|
if not process_stats: |
|
978
|
|
|
raise HTTPException(status.HTTP_404_NOT_FOUND, f"Unknown PID process {pid}") |
|
979
|
|
|
|
|
980
|
|
|
return GlancesJSONResponse(process_stats) |
|
981
|
|
|
|
nicolargo /
glances
