org.apache.flink.connector.kafka

类 MetricUtil

java.lang.Object

org.apache.flink.connector.kafka.MetricUtil

@Internal
public class MetricUtil
extends Object

Collection of methods to interact with Kafka's client metric system.

构造器概要

构造器

构造器和说明
MetricUtil()

方法概要

限定符和类型	方法和说明
static org.apache.kafka.common.Metric	getKafkaMetric(Map<org.apache.kafka.common.MetricName,? extends org.apache.kafka.common.Metric> metrics, java.util.function.Predicate<Map.Entry<org.apache.kafka.common.MetricName,? extends org.apache.kafka.common.Metric>> filter) Tries to find the Kafka Metric in the provided metrics matching a given filter.
static org.apache.kafka.common.Metric	getKafkaMetric(Map<org.apache.kafka.common.MetricName,? extends org.apache.kafka.common.Metric> metrics, String metricGroup, String metricName) Tries to find the Kafka Metric in the provided metrics.
static void	sync(org.apache.kafka.common.Metric from, org.apache.flink.metrics.Counter to) Ensures that the counter has the same value as the given Kafka metric.

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

MetricUtil

public MetricUtil()

方法详细资料

getKafkaMetric

public static org.apache.kafka.common.Metric getKafkaMetric(Map<org.apache.kafka.common.MetricName,? extends org.apache.kafka.common.Metric> metrics,
                                                            String metricGroup,
                                                            String metricName)

Tries to find the Kafka Metric in the provided metrics.

返回:

Metric which exposes continuous updates

抛出:

IllegalStateException - if the metric is not part of the provided metrics

getKafkaMetric

public static org.apache.kafka.common.Metric getKafkaMetric(Map<org.apache.kafka.common.MetricName,? extends org.apache.kafka.common.Metric> metrics,
                                                            java.util.function.Predicate<Map.Entry<org.apache.kafka.common.MetricName,? extends org.apache.kafka.common.Metric>> filter)

Tries to find the Kafka Metric in the provided metrics matching a given filter.

返回:

Metric which exposes continuous updates

抛出:

IllegalStateException - if no metric matches the given filter

sync

public static void sync(org.apache.kafka.common.Metric from,
                        org.apache.flink.metrics.Counter to)

Ensures that the counter has the same value as the given Kafka metric.

Do not use this method for every record because Metric.metricValue() is an expensive operation.

参数:

from - Kafka's Metric to query

to - Counter to write the value to