Class: Google::Cloud::Dns::Change::List

Inherits:
Array
  • Object
show all
Defined in:
lib/google/cloud/dns/change/list.rb

Overview

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#token ⇒ Object

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



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# File 'lib/google/cloud/dns/change/list.rb', line 28

def token
  @token
end

Instance Method Details

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

Retrieves remaining results by repeatedly invoking #next until #next? returns false. Calls the given block once for each result, which is passed as the argument to the block.

An Enumerator is returned if no block is given.

This method will make repeated API calls until all remaining results are retrieved. (Unlike #each, for example, which merely iterates over the results returned by a single API call.) Use with caution.

Examples:

Iterating each change by passing a block:

require "google/cloud/dns"

dns = Google::Cloud::Dns.new
zone = dns.zone "example-com"
changes = zone.changes

changes.all do |change|
  puts change.id
end

Using the enumerator by not passing a block:

require "google/cloud/dns"

dns = Google::Cloud::Dns.new
zone = dns.zone "example-com"
changes = zone.changes

all_names = changes.all.map do |change|
  change.id
end

Limit the number of API calls made:

require "google/cloud/dns"

dns = Google::Cloud::Dns.new
zone = dns.zone "example-com"
changes = zone.changes

changes.all(request_limit: 10) do |change|
  puts change.id
end

Parameters:

  • request_limit (Integer) (defaults to: nil) —

    The upper limit of API requests to make to load all changes. Default is no limit.

Yields:

  • (change) —

    The block for accessing each change.

Yield Parameters:

  • change (Change) —

    The change object.

Returns:

  • (Enumerator) 


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# File 'lib/google/cloud/dns/change/list.rb', line 130

def all request_limit: nil, &block
  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(&block)
    if request_limit
      request_limit -= 1
      break if request_limit.negative?
    end
    break unless results.next?
    results = results.next
  end
end

#next ⇒ Change::List

Retrieve the next page of changes.

Examples:

require "google/cloud/dns"

dns = Google::Cloud::Dns.new
zone = dns.zone "example-com"

changes = zone.changes
if changes.next?
  next_changes = changes.next
end

Returns:



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# File 'lib/google/cloud/dns/change/list.rb', line 73

def next
  return nil unless next?
  ensure_zone!
  @zone.changes token: token, max: @max, order: @order
end

#next? ⇒ Boolean

Whether there a next page of changes.

Examples:

require "google/cloud/dns"

dns = Google::Cloud::Dns.new
zone = dns.zone "example-com"

changes = zone.changes
if changes.next?
  next_changes = changes.next
end

Returns:

  • (Boolean) 


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# File 'lib/google/cloud/dns/change/list.rb', line 53

def next?
  !token.nil?
end