191 lines
8.6 KiB
Python
191 lines
8.6 KiB
Python
import os
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import sys
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from typing import Iterator
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import yaml
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from flask import Flask, redirect, send_from_directory, url_for
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from flask.typing import ResponseReturnValue
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from prometheus_client import CollectorRegistry, Metric, make_wsgi_app
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from prometheus_client.metrics_core import (CounterMetricFamily,
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GaugeMetricFamily)
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from prometheus_client.registry import REGISTRY, Collector
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from prometheus_flask_exporter import PrometheusMetrics
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from sqlalchemy import text
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from sqlalchemy.exc import SQLAlchemyError
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from werkzeug.middleware.dispatcher import DispatcherMiddleware
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from app.api import api
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from app.extensions import bootstrap, db, migrate
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from app.models.automation import Automation, AutomationState
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from app.portal import portal
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from app.portal.report import report
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from app.tfstate import tfstate
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app = Flask(__name__)
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app.config.from_file("../config.yaml", load=yaml.safe_load)
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# create new registry to avoid multiple metrics registration in global REGISTRY
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registry = CollectorRegistry()
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metrics = PrometheusMetrics(app, registry=registry)
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app.wsgi_app = DispatcherMiddleware(app.wsgi_app, { # type: ignore[method-assign]
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'/metrics': make_wsgi_app(registry)
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})
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# register default collectors to our new registry
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collectors = list(REGISTRY._collector_to_names.keys())
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for collector in collectors:
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registry.register(collector)
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db.init_app(app)
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migrate.init_app(app, db, render_as_batch=True)
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bootstrap.init_app(app)
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app.register_blueprint(api, url_prefix="/api")
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app.register_blueprint(portal, url_prefix="/portal")
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app.register_blueprint(tfstate, url_prefix="/tfstate")
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app.register_blueprint(report, url_prefix="/report")
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def not_migrating() -> bool:
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return len(sys.argv) < 2 or sys.argv[1] != "db"
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class DefinedProxiesCollector(Collector):
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def collect(self) -> Iterator[Metric]:
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with app.app_context():
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ok = GaugeMetricFamily("database_collector",
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"Status of a database collector (0: bad, 1: good)",
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labels=["collector"])
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try:
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with db.engine.connect() as conn:
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result = conn.execute(text("""
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SELECT origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name,
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COUNT(proxy.id) FROM proxy, origin, pool, "group"
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WHERE proxy.origin_id = origin.id
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AND origin.group_id = "group".id
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AND proxy.pool_id = pool.id
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AND proxy.destroyed IS NULL
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GROUP BY origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name;
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"""))
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c = GaugeMetricFamily("defined_proxies", "Number of proxies currently defined for deployment",
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labels=['group_id', 'group_name', 'provider', 'pool_id',
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'pool_name'])
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for row in result:
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c.add_metric([str(row[0]), row[1], row[2], str(row[3]), row[4]],
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row[5])
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yield c
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ok.add_metric(["defined_proxies"], 1)
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except SQLAlchemyError:
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ok.add_metric(["defined_proxies"], 0)
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yield ok
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class BlockedProxiesCollector(Collector):
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def collect(self) -> Iterator[Metric]:
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with app.app_context():
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ok = GaugeMetricFamily("database_collector",
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"Status of a database collector (0: bad, 1: good)",
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labels=["collector"])
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try:
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with db.engine.connect() as conn:
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result = conn.execute(text("""
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SELECT origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name,
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proxy.deprecation_reason, COUNT(proxy.id) FROM proxy, origin, pool, "group"
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WHERE proxy.origin_id = origin.id
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AND origin.group_id = "group".id
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AND proxy.pool_id = pool.id
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AND proxy.deprecated IS NOT NULL
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GROUP BY origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name,
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proxy.deprecation_reason;
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"""))
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c = CounterMetricFamily("deprecated_proxies",
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"Number of proxies deprecated",
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labels=['group_id', 'group_name', 'provider', 'pool_id', 'pool_name',
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'deprecation_reason'])
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for row in result:
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c.add_metric([str(row[0]), row[1], row[2], str(row[3]), row[4], row[5]],
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row[6])
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yield c
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ok.add_metric(["deprecated_proxies"], 0)
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except SQLAlchemyError:
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ok.add_metric(["deprecated_proxies"], 0)
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yield ok
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class AutomationCollector(Collector):
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def collect(self) -> Iterator[Metric]:
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with app.app_context():
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ok = GaugeMetricFamily("database_collector",
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"Status of a database collector (0: bad, 1: good)",
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labels=["collector"])
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try:
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state = GaugeMetricFamily("automation_state", "The automation state (0: idle, 1: running, 2: error)",
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labels=['automation_name'])
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enabled = GaugeMetricFamily("automation_enabled",
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"Whether an automation is enabled (0: disabled, 1: enabled)",
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labels=['automation_name'])
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next_run = GaugeMetricFamily("automation_next_run", "The timestamp of the next run of the automation",
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labels=['automation_name'])
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last_run_start = GaugeMetricFamily("automation_last_run_start",
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"The timestamp of the last run of the automation ",
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labels=['automation_name'])
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automations = Automation.query.all()
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for automation in automations:
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if automation.short_name in app.config['HIDDEN_AUTOMATIONS']:
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continue
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if automation.state == AutomationState.IDLE:
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state.add_metric([automation.short_name], 0)
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elif automation.state == AutomationState.RUNNING:
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state.add_metric([automation.short_name], 1)
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else:
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state.add_metric([automation.short_name], 2)
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enabled.add_metric([automation.short_name], 1 if automation.enabled else 0)
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if automation.next_run:
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next_run.add_metric([automation.short_name], automation.next_run.timestamp())
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else:
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next_run.add_metric([automation.short_name], 0)
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if automation.last_run:
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last_run_start.add_metric([automation.short_name], automation.last_run.timestamp())
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else:
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last_run_start.add_metric([automation.short_name], 0)
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yield state
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yield enabled
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yield next_run
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yield last_run_start
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ok.add_metric(["automation_state"], 1)
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except SQLAlchemyError:
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ok.add_metric(["automation_state"], 0)
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yield ok
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# register all custom collectors to registry
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if not_migrating() and 'DISABLE_METRICS' not in os.environ:
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registry.register(DefinedProxiesCollector())
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registry.register(BlockedProxiesCollector())
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registry.register(AutomationCollector())
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@app.route('/ui')
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def redirect_ui() -> ResponseReturnValue:
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return redirect("/ui/")
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@app.route('/ui/', defaults={'path': ''})
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@app.route('/ui/<path:path>')
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def serve_ui(path: str) -> ResponseReturnValue:
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if path != "" and os.path.exists("app/static/ui/" + path):
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return send_from_directory('static/ui', path)
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else:
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return send_from_directory('static/ui', 'index.html')
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@app.route('/')
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def index() -> ResponseReturnValue:
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# TODO: update to point at new UI when ready
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return redirect(url_for("portal.portal_home"))
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if __name__ == '__main__':
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app.run()
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