Random Label Generator for Prometheus Metrics

This function generates a specified number of random labels, each composed of a prefix and a random number. The value of the label is randomly chosen. These labels are used for Prometheus Gauge type metrics.

Technology Stack : Prometheus, CollectorRegistry, Gauge, random.randint, random.choice

Code Type : Prometheus custom function

Code Difficulty : Intermediate

                
                    
def random_label_generator(label_prefix, num_labels):
    import random
    from prometheus_client import CollectorRegistry, Gauge

    # 创建一个注册表
    registry = CollectorRegistry()
    # 创建一个Gauge对象，用于生成随机标签
    gauge = Gauge('random_labels', 'Random labels for demonstration', registry=registry)

    def generate_labels():
        labels = {}
        for i in range(num_labels):
            label_name = f"{label_prefix}_{random.randint(0, 1000)}"
            labels[label_name] = random.choice(['A', 'B', 'C'])
        return labels

    # 生成随机标签并更新到Gauge中
    gauge.labels(**generate_labels()).set()

    # 返回生成的标签
    return generate_labels()