Random Prometheus Metric Series Generator

This function uses the Prometheus third-party library to generate a random Prometheus metric series. It randomly selects a label pair from the provided list of label pairs, and uses this label pair and the specified value to create a full metric name. Then, it creates a counter metric and increments it by the specified value. Finally, it generates the metric in Prometheus text format.

Technology Stack : prometheus_client, random

Code Type : Prometheus indicator generating function

Code Difficulty : Intermediate

                
                    
def generate_random_series(label_pairs, metric_name, value):
    from prometheus_client import CollectorRegistry, generate_latest
    from random import choice

    # Randomly choose a label pair from the provided list
    selected_label_pair = choice(label_pairs)
    # Construct the full metric name with the selected label pair and value
    full_metric_name = f"{metric_name}_{selected_label_pair[0]}={selected_label_pair[1]}"

    # Create a registry and add a simple counter metric
    registry = CollectorRegistry()
    from prometheus_client.metrics import Counter
    counter = Counter(full_metric_name, 'help', 'description')
    counter.inc(value=value)

    # Generate the Prometheus text format output
    return generate_latest(registry)