Prometheus client libraries enable efficient metric pushing to a Push Gateway with operations for adding, updating, and deleting metrics.
Prometheus client libraries allow you to push metrics to a Push Gateway efficiently. They support three primary operations that correspond to common HTTP methods for metric manipulation:
A push operation that removes any existing metrics for the job and adds the new ones (equivalent to an HTTP PUT request).
A push operation that updates metrics with the same name while leaving other metrics unchanged (behaving like an HTTP POST request).
A delete operation that removes all metrics in a specified group (similar to an HTTP DELETE request).
Below is an example demonstrating how to push metrics using the Prometheus client library:
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from prometheus_client import CollectorRegistry, Gauge, push_to_gateway# Create a new registry to hold our metricsregistry = CollectorRegistry()# Define a gauge metric and register it with the registrytest_metric = Gauge('test_metric', 'This is an example metric', registry=registry)# Set a value for the metrictest_metric.set(10)# Push the metric to the Push Gatewaypush_to_gateway('user2:9091', job='batch', registry=registry)
In the example above, the CollectorRegistry is used to group all metrics together. After defining and updating a gauge metric, the push_to_gateway function pushes the updated metric to the designated Push Gateway, ensuring that the metrics for the specified job are up to date.
