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34 lines
882 B
Plaintext
34 lines
882 B
Plaintext
{% import (
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"math"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmselect/netstorage"
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) %}
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{% stripspace %}
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// Federate writes rs in /federate format.
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// See https://prometheus.io/docs/prometheus/latest/federation/
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{% func Federate(rs *netstorage.Result) %}
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{% code
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values := rs.Values
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timestamps := rs.Timestamps
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%}
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{% if len(timestamps) == 0 || len(values) == 0 %}{% return %}{% endif %}
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{% code
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lastValue := values[len(values)-1]
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%}
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{% if math.IsNaN(lastValue) %}
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{% comment %}
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This is most likely a staleness marker.
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Return nothing after the staleness marker.
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See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3185
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{% endcomment %}
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{% return %}
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{% endif %}
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{%= prometheusMetricName(&rs.MetricName) %}{% space %}
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{%f= lastValue %}{% space %}
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{%dl= timestamps[len(timestamps)-1] %}{% newline %}
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{% endfunc %}
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{% endstripspace %}
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