Prometheus推送网关计数器Inc.不正确

Question

Prometheus pushgateway counter inc不正确，也许pushgateway只支持设置值？

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值始终为1，而不是预期的inc。

代码如下所示：

class PrometheusClient(object):

    def __init__(self):
        self.push_url = "prometheus-pushgateway:9091"

    def push(self):
        registry = CollectorRegistry()
        c = Counter('news_crawler', 'crawl count', labelnames=['source', 'source_name'], registry=registry)
        c.labels(source=2, source_name='jin_flash').inc()
        push_to_gateway(self.push_url, job='news_crawler_collector', registry=registry)

Answer 1

通过在初始化时创建计数器来调整代码

class PrometheusClient(object):

    def __init__(self):
        self.push_url = "prometheus-pushgateway:9091"
        self.registry = CollectorRegistry()
        self.counter = Counter('news_crawler', 'crawl count',
                               labelnames=['source', 'source_name'], registry=self.registry)

    def push(self):
        self.counter.labels(source=2, source_name='jin_flash').inc()
        push_to_gateway(self.push_url, job='news_crawler_collector', registry=self.registry)


cli = PrometheusClient()