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metrics: refactor app context into base class

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This commit is contained in:
Iain Learmonth 2022-11-02 13:46:39 +00:00
parent 28c07b7d82
commit 0ff61721d9
1 changed files with 65 additions and 55 deletions
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120
app/metrics.py
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@ -1,3 +1,4 @@
from abc import abstractmethod
from typing import Iterator, Optional
from flask import Flask
@ -9,72 +10,81 @@ from app.models.automation import Automation, AutomationState
class FlaskCollector:
def __init__(self, app=None):
self.app: Optional[Flask] = None
_app: Optional[Flask]
def init_app(self, app):
self.app = app
def __init__(self, app: Optional[Flask] = None) -> None:
self._app = app
def init_app(self, app: Flask) -> None:
self._app = app
class DefinedProxiesCollector:
def collect(self) -> Iterator[Metric]:
with self.app.app_context():
conn = db.engine.connect()
if self._app:
with self._app.app_context():
return self.collect_in_ctx(self._app)
raise RuntimeError("Flask collector was not initialised with app")
@abstractmethod
def collect_in_ctx(self, app: Flask) -> Iterator[Metric]:
raise NotImplementedError()
class DefinedProxiesCollector(FlaskCollector):
def collect_in_ctx(self, app: Flask) -> Iterator[Metric]:
conn = db.engine.connect()
result = conn.execute(text("""
SELECT origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name,
COUNT(proxy.id) FROM proxy, origin, pool, "group"
WHERE proxy.origin_id = origin.id
AND origin.group_id = "group".id
AND proxy.pool_id = pool.id
AND proxy.destroyed IS NULL
GROUP BY origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name;
"""))
c = GaugeMetricFamily("defined_proxies", "Number of proxies currently defined for deployment",
labels=['group_id', 'group_name', 'provider', 'pool_id',
'pool_name']) # type: ignore[no-untyped-call]
for row in result:
c.add_metric([str(row[0]), row[1], row[2], str(row[3]), row[4]],
row[5]) # type: ignore[no-untyped-call]
yield c
class BlockedProxiesCollector(FlaskCollector):
def collect_in_ctx(self, app: Flask) -> Iterator[Metric]:
with db.engine.connect() as conn:
result = conn.execute(text("""
SELECT origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name,
COUNT(proxy.id) FROM proxy, origin, pool, "group"
proxy.deprecation_reason, COUNT(proxy.id) FROM proxy, origin, pool, "group"
WHERE proxy.origin_id = origin.id
AND origin.group_id = "group".id
AND proxy.pool_id = pool.id
AND proxy.destroyed IS NULL
GROUP BY origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name;
AND proxy.deprecated IS NOT NULL
GROUP BY origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name,
proxy.deprecation_reason;
"""))
c = GaugeMetricFamily("defined_proxies", "Number of proxies currently defined for deployment",
labels=['group_id', 'group_name', 'provider', 'pool_id',
'pool_name']) # type: ignore[no-untyped-call]
c = CounterMetricFamily("deprecated_proxies",
"Number of proxies deprecated",
labels=['group_id', 'group_name', 'provider', 'pool_id', 'pool_name',
'deprecation_reason']) # type: ignore[no-untyped-call]
for row in result:
c.add_metric([str(row[0]), row[1], row[2], str(row[3]), row[4]],
row[5]) # type: ignore[no-untyped-call]
c.add_metric([str(row[0]), row[1], row[2], str(row[3]), row[4], row[5]],
row[6]) # type: ignore[no-untyped-call]
yield c
class BlockedProxiesCollector:
def collect(self) -> Iterator[Metric]:
with self.app.app_context():
with db.engine.connect() as conn:
result = conn.execute(text("""
SELECT origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name,
proxy.deprecation_reason, COUNT(proxy.id) FROM proxy, origin, pool, "group"
WHERE proxy.origin_id = origin.id
AND origin.group_id = "group".id
AND proxy.pool_id = pool.id
AND proxy.deprecated IS NOT NULL
GROUP BY origin.group_id, "group".group_name, proxy.provider, proxy.pool_id, pool.pool_name,
proxy.deprecation_reason;
"""))
c = CounterMetricFamily("deprecated_proxies",
"Number of proxies deprecated",
labels=['group_id', 'group_name', 'provider', 'pool_id', 'pool_name',
'deprecation_reason']) # type: ignore[no-untyped-call]
for row in result:
c.add_metric([str(row[0]), row[1], row[2], str(row[3]), row[4], row[5]],
row[6]) # type: ignore[no-untyped-call]
yield c
class AutomationCollector:
def collect(self) -> Iterator[Metric]:
with self.app.app_context():
c = GaugeMetricFamily("automation_state", "The automation state (0: idle, 1: running, 2: error)",
labels=['automation_name']) # type: ignore[no-untyped-call]
automations = Automation.query.all()
for automation in automations:
if automation.short_name in app.config['HIDDEN_AUTOMATIONS']:
continue
if automation.state == AutomationState.IDLE:
c.add_metric([automation.short_name], 0) # type: ignore[no-untyped-call]
elif automation.state == AutomationState.RUNNING:
c.add_metric([automation.short_name], 1) # type: ignore[no-untyped-call]
else:
c.add_metric([automation.short_name], 2) # type: ignore[no-untyped-call]
yield c
class AutomationCollector(FlaskCollector):
def collect_in_ctx(self, app: Flask) -> Iterator[Metric]:
c = GaugeMetricFamily("automation_state", "The automation state (0: idle, 1: running, 2: error)",
labels=['automation_name']) # type: ignore[no-untyped-call]
automations = Automation.query.all()
for automation in automations:
if automation.short_name in app.config['HIDDEN_AUTOMATIONS']:
continue
if automation.state == AutomationState.IDLE:
c.add_metric([automation.short_name], 0) # type: ignore[no-untyped-call]
elif automation.state == AutomationState.RUNNING:
c.add_metric([automation.short_name], 1) # type: ignore[no-untyped-call]
else:
c.add_metric([automation.short_name], 2) # type: ignore[no-untyped-call]
yield c