Class: Gcloud::Logging::Metric::List

Inherits:
Array
  • Object
show all
Defined in:
lib/gcloud/logging/metric/list.rb

Overview

Metric::List is a special case Array with additional values.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(arr = []) ⇒ List 



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# File 'lib/gcloud/logging/metric/list.rb', line 31

def initialize arr = []
  super arr
end

Instance Attribute Details

#token ⇒ Object

If not empty, indicates that there are more records that match the request and this value should be passed to continue.



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# File 'lib/gcloud/logging/metric/list.rb', line 27

def token
  @token
end

Class Method Details

.from_grpc(grpc_list, service, max = nil) ⇒ Object

Google::Logging::V2::ListLogMetricsResponse object.



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# File 'lib/gcloud/logging/metric/list.rb', line 149

def self.from_grpc grpc_list, service, max = nil
  metrics = new(Array(grpc_list.metrics).map do |grpc_metric|
    Metric.from_grpc grpc_metric, service
  end)
  token = grpc_list.next_page_token
  token = nil if token == ""
  metrics.instance_variable_set "@token", token
  metrics.instance_variable_set "@service", service
  metrics.instance_variable_set "@max", max
  metrics
end

Instance Method Details

#all(request_limit: nil) {|metric| ... } ⇒ Enumerator

Retrieves all metrics by repeatedly loading #next until #next? returns ‘false`. Calls the given block once for each metric, which is passed as the parameter.

An Enumerator is returned if no block is given.

This method may make several API calls until all metrics are retrieved. Be sure to use as narrow a search criteria as possible. Please use with caution.

Examples:

Iterating each metric by passing a block:

require "gcloud"

gcloud = Gcloud.new
logging = gcloud.logging
metrics = logging.metrics

metrics.all do |metric|
  puts "#{metric.name}: #{metric.filter}"
end

Using the enumerator by not passing a block:

require "gcloud"

gcloud = Gcloud.new
logging = gcloud.logging
metrics = logging.metrics

all_names = metrics.all.map do |metric|
  metric.name
end

Limit the number of API calls made:

require "gcloud"

gcloud = Gcloud.new
logging = gcloud.logging
metrics = logging.metrics

metrics.all(request_limit: 10) do |metric|
  puts "#{metric.name}: #{metric.filter}"
end

Yields:

  • (metric) —

    The block for accessing each metric.

Yield Parameters:

  • metric (Metric) —

    The metric object.



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# File 'lib/gcloud/logging/metric/list.rb', line 129

def all request_limit: nil
  request_limit = request_limit.to_i if request_limit
  unless block_given?
    return enum_for(:all, request_limit: request_limit)
  end
  results = self
  loop do
    results.each { |r| yield r }
    if request_limit
      request_limit -= 1
      break if request_limit < 0
    end
    break unless results.next?
    results = results.next
  end
end

#next ⇒ Sink::List

Retrieve the next page of metrics.

Examples:

require "gcloud"

gcloud = Gcloud.new
logging = gcloud.logging

metrics = dataset.metrics
if metrics.next?
  next_metrics = metrics.next
end



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# File 'lib/gcloud/logging/metric/list.rb', line 71

def next
  return nil unless next?
  ensure_service!
  grpc = @service.list_metrics token: token, max: @max
  self.class.from_grpc grpc, @service
end

#next? ⇒ Boolean

Whether there is a next page of metrics.

Examples:

require "gcloud"

gcloud = Gcloud.new
logging = gcloud.logging

metrics = logging.metrics
if metrics.next?
  next_metrics = metrics.next
end



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# File 'lib/gcloud/logging/metric/list.rb', line 51

def next?
  !token.nil?
end