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/*
 * 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.jdbc;

import org.apache.phoenix.thirdparty.com.google.common.collect.ImmutableList;
import org.apache.phoenix.monitoring.AtomicMetric;
import org.apache.phoenix.monitoring.Metric;
import org.apache.phoenix.monitoring.MetricType;

import java.util.EnumMap;
import java.util.List;
import java.util.Map;

import static org.apache.phoenix.monitoring.MetricType.HA_PARALLEL_COUNT_FAILED_OPERATIONS_ACTIVE_CLUSTER;
import static org.apache.phoenix.monitoring.MetricType.HA_PARALLEL_COUNT_FAILED_OPERATIONS_STANDBY_CLUSTER;
import static org.apache.phoenix.monitoring.MetricType.HA_PARALLEL_COUNT_OPERATIONS_ACTIVE_CLUSTER;
import static org.apache.phoenix.monitoring.MetricType.HA_PARALLEL_COUNT_OPERATIONS_STANDBY_CLUSTER;
import static org.apache.phoenix.monitoring.MetricType.HA_PARALLEL_COUNT_USED_OPERATIONS_ACTIVE_CLUSTER;
import static org.apache.phoenix.monitoring.MetricType.HA_PARALLEL_COUNT_USED_OPERATIONS_STANDBY_CLUSTER;

public class PhoenixHAGroupMetrics implements PhoenixMetricsHolder {

    public enum HAMetricType {
        HA_PARALLEL_COUNT_FAILED_OPERATIONS(ImmutableList.of(
                HA_PARALLEL_COUNT_FAILED_OPERATIONS_ACTIVE_CLUSTER,
                HA_PARALLEL_COUNT_FAILED_OPERATIONS_STANDBY_CLUSTER)),
        HA_PARALLEL_USED_OPERATIONS(ImmutableList.of(
                HA_PARALLEL_COUNT_USED_OPERATIONS_ACTIVE_CLUSTER,
                HA_PARALLEL_COUNT_USED_OPERATIONS_STANDBY_CLUSTER)),
        HA_PARALLEL_COUNT_OPERATIONS(ImmutableList.of(
                HA_PARALLEL_COUNT_OPERATIONS_ACTIVE_CLUSTER,
                HA_PARALLEL_COUNT_OPERATIONS_STANDBY_CLUSTER));

        private final List metrics;

        HAMetricType(List metrics) {
            this.metrics = metrics;
        }
    }

    protected EnumMap map = new EnumMap<>(MetricType.class);

    protected PhoenixHAGroupMetrics(List types) {
        for (HAMetricType type : types) {
            for (MetricType metricType : type.metrics) {
                map.put(metricType, new AtomicMetric(metricType));
            }
        }
    }

    @Override
    public Metric get(MetricType type) {
        return map.get(type);
    }

    @Override
    public void reset() {
        map.values().forEach(Metric::reset);
    }

    @Override
    public Map getAllMetrics() {
        return map;
    }

    public Metric get(HAMetricType type, int clusterIndex) {
        return map.get(type.metrics.get(clusterIndex));
    }
}