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Add subsystem metrics

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- Adds a Metrics() class that can track data such as number of
events the callback receiver inserted into database
- Exposes this metric data at the api/v2/metrics/ endpoint.
This data is prometheus-friendly
- Metric data is stored in memory, then periodically saved to Redis.
- Metric data is periodically broadcast to other nodes in the cluster,
so that each node has a copy of the most recent metric data collected.
This commit is contained in:
Seth Foster
2021-03-23 16:05:10 -04:00
parent f8a698d127
commit 0c569c67fd
12 changed files with 410 additions and 20 deletions
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14
awx/api/renderers.py
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@@ -129,6 +129,18 @@ class PrometheusJSONRenderer(renderers.JSONRenderer):
parsed_metrics = text_string_to_metric_families(data)
data = {}
for family in parsed_metrics:
data[family.name] = {}
data[family.name]['help_text'] = family.documentation
data[family.name]['type'] = family.type
data[family.name]['samples'] = []
for sample in family.samples:
data[sample[0]] = {"labels": sample[1], "value": sample[2]}
sample_dict = {"labels": sample[1], "value": sample[2]}
if family.type == 'histogram':
if sample[0].endswith("_sum"):
sample_dict['sample_type'] = "sum"
elif sample[0].endswith("_count"):
sample_dict['sample_type'] = "count"
elif sample[0].endswith("_bucket"):
sample_dict['sample_type'] = "bucket"
data[family.name]['samples'].append(sample_dict)
return super(PrometheusJSONRenderer, self).render(data, accepted_media_type, renderer_context)