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from urllib.parse import urljoin |
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from prometheus_client.core import CounterMetricFamily, GaugeMetricFamily |
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class TimestampMixin(object): |
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"""Add timestamps to *MetricFamily |
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The goal is to be a generic drop-in replacement for *MetricFamily. |
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That means that we can be called with the exact same signature as the original class. |
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We don't care about any other argument. |
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The sole assumption is that timestamp is not an argument expected by *MetricFamily. |
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""" |
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def __init__(self, *args, **kwargs): |
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try: |
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self._timestamp = kwargs.pop("timestamp") |
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except KeyError: |
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self._timestamp = None |
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super(TimestampMixin, self).__init__(*args, **kwargs) |
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def add_metric(self, *args, **kwargs): |
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if "timestamp" not in kwargs: |
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kwargs["timestamp"] = self._timestamp |
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super(TimestampMixin, self).add_metric(*args, **kwargs) |
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class TimestampGaugeMetricFamily(TimestampMixin, GaugeMetricFamily): |
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pass |
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class TimestampCounterMetricFamily(TimestampMixin, CounterMetricFamily): |
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pass |
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def url_join(host: str, path: str) -> str: |
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"""Produce an URL as expected when the host part has a path. |
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The idea is to always have the host end with a `/` and the path be relative. This way `urljoin` keeps both. |
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As `urljoin` removes superfluous slashes, there's no need to check wether `host` ends with one. |
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This addresses https://github.com/vladvasiliu/kibana-prometheus-exporter-py/issues/4 |
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""" |
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host += "/" |
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path = path.lstrip("/") |
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return urljoin(host, path) |
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vladvasiliu /
kibana-prometheus-exporter-py
