/*
 * Copyright 2015 Red Hat, Inc.
 *
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  and Apache License v2.0 which accompanies this distribution.
 *
 *  The Eclipse Public License is available at
 *  http://www.eclipse.org/legal/epl-v10.html
 *
 *  The Apache License v2.0 is available at
 *  http://www.opensource.org/licenses/apache2.0.php
 *
 *  You may elect to redistribute this code under either of these licenses.
 *
 *
 * Copyright (c) 2015 The original author or authors
 * ------------------------------------------------------
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Apache License v2.0 which accompanies this distribution.
 *
 *     The Eclipse Public License is available at
 *     http://www.eclipse.org/legal/epl-v10.html
 *
 *     The Apache License v2.0 is available at
 *     http://www.opensource.org/licenses/apache2.0.php
 *
 * You may elect to redistribute this code under either of these licenses.
 *
 */

package io.vertx.ext.dropwizard.impl.shell;

import io.vertx.core.cli.annotations.Argument;
import io.vertx.core.cli.annotations.Description;
import io.vertx.core.cli.annotations.Name;
import io.vertx.core.cli.annotations.Summary;
import io.vertx.core.json.JsonObject;
import io.vertx.ext.dropwizard.MetricsService;
import io.vertx.ext.shell.command.AnnotatedCommand;
import io.vertx.ext.shell.command.CommandProcess;

Author:
Julien Viet/**
 * @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
 */
@Name("metrics-info")
@Summary("Show metrics info for the current Vert.x instance in Json format")
public class MetricsInfo extends AnnotatedCommand {

  private String name;

  @Argument(index = 0, argName = "name")
  @Description("the metrics name, can be a metrics prefix or a precise name")
  public void setName(String name) {
    this.name = name;
  }

  @Override
  public void process(CommandProcess process) {
    String name = process.args().get(0);
    MetricsService metrics = MetricsService.create(process.vertx());
    JsonObject snapshot = metrics.getMetricsSnapshot(name);
    process.write(snapshot.encodePrettily() + "\n");
    process.end();
  }
}