phoenix-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From karanmehta93 <...@git.apache.org>
Subject [GitHub] phoenix pull request #315: PHOENIX-3655 Global Phoenix Client Metrics for PQ...
Date Wed, 01 Aug 2018 23:14:16 GMT
Github user karanmehta93 commented on a diff in the pull request:

    https://github.com/apache/phoenix/pull/315#discussion_r207060201
  
    --- Diff: phoenix-core/src/main/java/org/apache/phoenix/monitoring/GlobalMetricRegistriesAdapter.java
---
    @@ -0,0 +1,167 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one
    + * or more contributor license agreements.  See the NOTICE file
    + * distributed with this work for additional information
    + * regarding copyright ownership.  The ASF licenses this file
    + * to you under the Apache License, Version 2.0 (the
    + * "License"); you may not use this file except in compliance
    + * with the License.  You may obtain a copy of the License at
    + *
    + * http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +package org.apache.phoenix.monitoring;
    +
    +import java.util.Iterator;
    +import java.util.Map;
    +import java.util.Map.Entry;
    +import org.apache.commons.lang.StringUtils;
    +import org.apache.commons.logging.Log;
    +import org.apache.commons.logging.LogFactory;
    +import org.apache.hadoop.hbase.metrics.Counter;
    +import org.apache.hadoop.hbase.metrics.Gauge;
    +import org.apache.hadoop.hbase.metrics.Histogram;
    +import org.apache.hadoop.hbase.metrics.Meter;
    +import org.apache.hadoop.hbase.metrics.Metric;
    +import org.apache.hadoop.hbase.metrics.MetricRegistry;
    +import org.apache.hadoop.hbase.metrics.MetricRegistryInfo;
    +import org.apache.hadoop.hbase.metrics.Timer;
    +import org.apache.hadoop.metrics2.MetricsCollector;
    +import org.apache.hadoop.metrics2.MetricsInfo;
    +import org.apache.hadoop.metrics2.MetricsRecordBuilder;
    +import org.apache.hadoop.metrics2.MetricsSource;
    +import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
    +import org.apache.hadoop.metrics2.lib.Interns;
    +import org.apache.hadoop.metrics2.lib.MutableHistogram;
    +import org.apache.hadoop.metrics2.source.JvmMetrics;
    +
    +/**
    + * Contents mostly copied from GlobalMetricRegistriesAdapter class from hbase-hadoop2-compat
    + * The adapter attaches HBase's MetricRegistry to Hadoop's DefaultMetricsSystem
    + * Doesn't handle dynamic attach/detach of registries
    + */
    +public class GlobalMetricRegistriesAdapter {
    +
    +    private static final Log LOG = LogFactory.getLog(GlobalMetricRegistriesAdapter.class);
    +    private static GlobalMetricRegistriesAdapter INSTANCE;
    +
    +    private GlobalMetricRegistriesAdapter() {
    +        DefaultMetricsSystem.initialize("Phoenix");
    +        JvmMetrics.initSingleton("Phoenix", "");
    +    }
    +
    +    public static GlobalMetricRegistriesAdapter getInstance() {
    +        if (INSTANCE == null) {
    +            INSTANCE = new GlobalMetricRegistriesAdapter();
    +        }
    +        return INSTANCE;
    +    }
    +
    +    public void registerMetricRegistry(MetricRegistry registry) {
    +        if (registry == null) {
    +            LOG.warn("Registry cannot be registered with Hadoop Metrics 2 since it is
null.");
    +            return;
    +        }
    +
    +        HBaseMetrics2HadoopMetricsAdapter adapter = new HBaseMetrics2HadoopMetricsAdapter(registry);
    +        registerToDefaultMetricsSystem(registry, adapter);
    +    }
    +
    +    private void registerToDefaultMetricsSystem(MetricRegistry registry, HBaseMetrics2HadoopMetricsAdapter
adapter) {
    +        MetricRegistryInfo info = registry.getMetricRegistryInfo();
    +        LOG.info("Registering " + info.getMetricsJmxContext() + " " + info.getMetricsDescription()
+ " into DefaultMetricsSystem");
    +        DefaultMetricsSystem.instance().register(info.getMetricsJmxContext(), info.getMetricsDescription(),
adapter);
    +    }
    +
    +    /**
    +     * Class to convert HBase Metric Objects to Hadoop Metrics2 Metric Objects
    +     */
    +    private static class HBaseMetrics2HadoopMetricsAdapter implements MetricsSource {
    +        private static final Log LOG = LogFactory.getLog(HBaseMetrics2HadoopMetricsAdapter.class);
    +        private final MetricRegistry registry;
    +        private HBaseMetrics2HadoopMetricsAdapter(MetricRegistry registry) {
    +            this.registry = registry;
    +        }
    +
    +        public void snapshotAllMetrics(MetricRegistry metricRegistry, MetricsCollector
collector) {
    +            MetricRegistryInfo info = metricRegistry.getMetricRegistryInfo();
    +            MetricsRecordBuilder builder = collector.addRecord(Interns.info(info.getMetricsName(),
info.getMetricsDescription()));
    +            builder.setContext(info.getMetricsContext());
    +            this.snapshotAllMetrics(metricRegistry, builder);
    +        }
    +
    +        public void snapshotAllMetrics(MetricRegistry metricRegistry, MetricsRecordBuilder
builder) {
    +            Map<String, Metric> metrics = metricRegistry.getMetrics();
    +            Iterator i$ = metrics.entrySet().iterator();
    --- End diff --
    
    Yes, ideally should not have used it here. I copied the code from a class file. Will update
it.


---

Mime
View raw message