io.trino.plugin.jmx.JmxHistoricalData Maven / Gradle / Ivy

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/*
 * Licensed 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 io.trino.plugin.jmx;

import com.google.common.collect.EvictingQueue;
import com.google.common.collect.ImmutableList;
import com.google.inject.Inject;

import javax.management.MBeanServer;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;

import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.collect.ImmutableSet.toImmutableSet;
import static io.trino.plugin.jmx.JmxMetadata.toPattern;
import static java.util.Locale.ENGLISH;
import static javax.management.ObjectName.WILDCARD;

public class JmxHistoricalData
{
    private final Set tables;
    private final Map>> tableData = new HashMap<>();

    @Inject
    public JmxHistoricalData(JmxConnectorConfig jmxConfig, MBeanServer mbeanServer)
    {
        this(jmxConfig.getMaxEntries(), jmxConfig.getDumpTables(), mbeanServer);
    }

    public JmxHistoricalData(int maxEntries, Set tableNames, MBeanServer mbeanServer)
    {
        tables = tableNames.stream()
                .map(objectNamePattern -> toPattern(objectNamePattern.toLowerCase(ENGLISH)))
                .flatMap(objectNamePattern -> mbeanServer.queryNames(WILDCARD, null).stream()
                        .map(objectName -> objectName.getCanonicalName().toLowerCase(ENGLISH))
                        .filter(name -> name.matches(objectNamePattern)))
                .collect(toImmutableSet());

        for (String tableName : tables) {
            tableData.put(tableName, EvictingQueue.create(maxEntries));
        }
    }

    public Set getTables()
    {
        return tables;
    }

    public synchronized void addRow(String tableName, List