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# Class: VertxDropwizard::MetricsService

Inherits:
  Object
  - Object
  - VertxDropwizard::MetricsService
  show all
Defined in:
  /Users/julien/java/vertx-stack/stack-docs/target/rb/vertx-dropwizard/metrics_service.rb

## Overview

The metrics service mainly allows to return a snapshot of measured objects.

## Class Method Summary (collapse)

- + (::VertxDropwizard::MetricsService) create(vertx = nil)
  Creates a metric service for a given Vertx::Vertx instance.

## Instance Method Summary (collapse)

- - (String) get_base_name(measured = nil)
  @param measured the measure object.
- - (Hash{String => Object}) get_metrics_snapshot(param_1 = nil)
  Will return the metrics that begins with the baseName, null if no metrics is available.
- - (Set<String>) metrics_names
  @return the known metrics names by this service.

## Class Method Details

### + (`::VertxDropwizard::MetricsService`) create(vertx = nil)

Creates a metric service for a given Vertx::Vertx instance.

Parameters:

- vertx (`::Vertx::Vertx`) (defaults to: `nil`) —
  the vertx instance

Returns:

- (`::VertxDropwizard::MetricsService`) —
  the metrics service

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx-dropwizard/metrics_service.rb', line 21

    def self.create(vertx=nil)
      if vertx.class.method_defined?(:j_del) && !block_given?
        return ::Vertx::Util::Utils.safe_create(Java::IoVertxExtDropwizard::MetricsService.java_method(:create, [Java::IoVertxCore::Vertx.java_class]).call(vertx.j_del),::VertxDropwizard::MetricsService)
      end
      raise ArgumentError, "Invalid arguments when calling create(vertx)"
    end

## Instance Method Details

### - (`String`) get_base_name(measured = nil)

@param measured the measure object

Parameters:

- measured (`::Vertx::Measured`) (defaults to: `nil`)

Returns:

- (`String`) —
  the base name of the measured object

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx-dropwizard/metrics_service.rb', line 30

    def get_base_name(measured=nil)
      if measured.class.method_defined?(:j_del) && !block_given?
        return @j_del.java_method(:getBaseName, [Java::IoVertxCoreMetrics::Measured.java_class]).call(measured.j_del)
      end
      raise ArgumentError, "Invalid arguments when calling get_base_name(measured)"
    end

### - (`Hash{String => Object}`) getMetricsSnapshot(measured) - (`Hash{String => Object}`) getMetricsSnapshot(baseName)

Will return the metrics that begins with the `baseName`, null if no metrics is available.

Note: in the case of scaled servers, the JsonObject returns an aggregation of the metrics as the dropwizard backend reports to a single server.

Overloads:

- - (`Hash{String => Object}`) getMetricsSnapshot(measured)

  Parameters:

  - measured (`::Vertx::Measured`)
- - (`Hash{String => Object}`) getMetricsSnapshot(baseName)

  Parameters:

  - baseName (`String`)

Returns:

- (`Hash{String => Object}`) —
  the map of metrics where the key is the name of the metric and the value is the json data representing that metric

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx-dropwizard/metrics_service.rb', line 53

    def get_metrics_snapshot(param_1=nil)
      if param_1.class.method_defined?(:j_del) && !block_given?
        return @j_del.java_method(:getMetricsSnapshot, [Java::IoVertxCoreMetrics::Measured.java_class]).call(param_1.j_del) != nil ? JSON.parse(@j_del.java_method(:getMetricsSnapshot, [Java::IoVertxCoreMetrics::Measured.java_class]).call(param_1.j_del).encode) : nil
      elsif param_1.class == String && !block_given?
        return @j_del.java_method(:getMetricsSnapshot, [Java::java.lang.String.java_class]).call(param_1) != nil ? JSON.parse(@j_del.java_method(:getMetricsSnapshot, [Java::java.lang.String.java_class]).call(param_1).encode) : nil
      end
      raise ArgumentError, "Invalid arguments when calling get_metrics_snapshot(param_1)"
    end

### - (`Set<String>`) metrics_names

@return the known metrics names by this service

Returns:

- (`Set<String>`)

Raises:

- (`ArgumentError`)

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    # File '/Users/julien/java/vertx-stack/stack-docs/target/rb/vertx-dropwizard/metrics_service.rb', line 38

    def metrics_names
      if !block_given?
        return ::Vertx::Util::Utils.to_set(@j_del.java_method(:metricsNames, []).call()).map! { |elt| elt }
      end
      raise ArgumentError, "Invalid arguments when calling metrics_names()"
    end