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/*
 * Copyright 2014-2023 Netflix, Inc.
 *
 * 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 com.netflix.spectator.sidecar;

import com.netflix.spectator.api.Clock;
import com.netflix.spectator.api.Id;
import com.netflix.spectator.api.Timer;

import java.util.concurrent.TimeUnit;

/**
 * Timer that writes updates in format compatible with SpectatorD.
 */
class SidecarTimer extends SidecarMeter implements Timer {

  private final Clock clock;
  private final SidecarWriter writer;

  /** Create a new instance. */
  SidecarTimer(Id id, Clock clock, SidecarWriter writer) {
    super(id, 't');
    this.clock = clock;
    this.writer = writer;
  }

  @Override public Clock clock() {
    return clock;
  }

  @Override public void record(long amount, TimeUnit unit) {
    final double seconds = unit.toNanos(amount) / 1e9;
    if (seconds >= 0.0) {
      writer.write(idString, seconds);
    }
  }

  @Override public long count() {
    return 0L;
  }

  @Override public long totalTime() {
    return 0L;
  }
}