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# SPDX-License-Identifier: GPL-3.0-or-later
from abc import ABC, abstractmethod
from collections.abc import Generator, Iterable
from typing import Any
from .download.downloader import Downloader
from .repository import BaseRepository
class BaseDownloaderCollector(ABC):
def __init__(self, address: str, port: int) -> None:
self._address = address
self._port = port
self._repositories: list[tuple[BaseRepository, Downloader]] = []
def prometheus_available(self) -> bool:
return False
def shutdown(self): # noqa: B027
pass
def add_downloader(self, repository: BaseRepository, downloader: Downloader):
self._repositories.append((repository, downloader))
@abstractmethod
def collect(self) -> Iterable[Any]:
pass
class DummyDownloaderCollector(BaseDownloaderCollector):
def collect(self):
yield
try:
from prometheus_client import Metric, start_http_server
from prometheus_client.core import REGISTRY, GaugeMetricFamily
from prometheus_client.registry import Collector
except ImportError:
class DownloaderCollector(DummyDownloaderCollector):
pass
else:
class DownloaderCollector(BaseDownloaderCollector, Collector): # type: ignore
def __init__(self, address: str, port: int) -> None:
super().__init__(address, port)
self._wsgi_server = None
self._wsgi_thread = None
wsgi_data = start_http_server(port=port, addr=address)
if wsgi_data:
self._wsgi_server, self._wsgi_thread = wsgi_data
REGISTRY.register(self)
def prometheus_available(self) -> bool:
return True
def shutdown(self):
if self._wsgi_server:
self._wsgi_server.shutdown()
if self._wsgi_thread:
self._wsgi_thread.join()
def _metric(self, name: str):
mf = GaugeMetricFamily(
f"apt_mirror_{name}",
name.replace("_", " ").capitalize(),
labels=["url"],
)
for repository, downloader in self._repositories:
mf.add_metric(
[str(repository.url)],
value=getattr(downloader, name),
)
return mf
def collect(self) -> Generator[Metric, Any, None]:
yield self._metric("queue_files_count")
yield self._metric("queue_files_size")
yield self._metric("downloaded_files_count")
yield self._metric("downloaded_files_size")
yield self._metric("error_files_count")
yield self._metric("error_files_size")
yield self._metric("missing_files_count")
yield self._metric("missing_files_size")
yield self._metric("unmodified_files_count")
yield self._metric("unmodified_files_size")
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