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/**
 * Copyright 2022 the original author or authors.
 *
 * 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
 *
 * https://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.micrometer.tracing.test.reporter.wavefront;

import java.util.concurrent.BlockingQueue;

import io.micrometer.core.instrument.Counter;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.tracing.reporter.wavefront.SpanMetrics;

/**
 * @author Moritz Halbritter
 */
class MeterRegistrySpanMetrics implements SpanMetrics {

    private final Counter spansReceived;

    private final Counter spansDropped;

    private final Counter reportErrors;

    private final MeterRegistry meterRegistry;

    MeterRegistrySpanMetrics(MeterRegistry meterRegistry) {
        this.meterRegistry = meterRegistry;
        this.spansReceived = meterRegistry.counter("reporter.spans.received");
        this.spansDropped = meterRegistry.counter("reporter.spans.dropped");
        this.reportErrors = meterRegistry.counter("reporter.errors");
    }

    @Override
    public void reportDropped() {
        spansDropped.increment();
    }

    @Override
    public void reportReceived() {
        spansReceived.increment();
    }

    @Override
    public void reportErrors() {
        reportErrors.increment();
    }

    @Override
    public void registerQueueSize(BlockingQueue queue) {
        meterRegistry.gauge("reporter.queue.size", queue, q -> (double) q.size());
    }

    @Override
    public void registerQueueRemainingCapacity(BlockingQueue queue) {
        meterRegistry.gauge("reporter.queue.remaining_capacity", queue, q -> (double) q.remainingCapacity());
    }

}