Module: Jira::Auto::Tool::Helpers::Pagination

Defined in:
lib/jira/auto/tool/helpers/pagination.rb

Constant Summary collapse

PAGE_SIZE = 
50
PAGINATION_PARAMETER_STYLES = 
{
  camelCase: %i[maxResults startAt],
  snake_case: %i[max_results start_at]
}.freeze

Class Method Summary collapse

Class Method Details

.build_pagination_options(parameter_naming_convention, max_results, start_at) ⇒ Object 



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# File 'lib/jira/auto/tool/helpers/pagination.rb', line 35

def self.build_pagination_options(parameter_naming_convention, max_results, start_at)
  PAGINATION_PARAMETER_STYLES
    .fetch(parameter_naming_convention) { |k| "#{k.inspect}: not found in #{PAGINATION_PARAMETER_STYLES}" }
    .zip([max_results, start_at])
    .to_h
end

.fetch_all_object_pages(parameter_naming_convention = :camelCase) ⇒ Object 



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# File 'lib/jira/auto/tool/helpers/pagination.rb', line 10

def self.fetch_all_object_pages(parameter_naming_convention = :camelCase)
  all_objects = []
  start_at = 0

  loop do
    pagination_options = build_pagination_options(parameter_naming_convention, PAGE_SIZE, start_at)

    log.debug { "Fetching objects from Jira (#{pagination_options.inspect})..." }

    fetched_objects = yield(pagination_options)

    log.debug { "Fetched #{fetched_objects.size} object." }

    all_objects.concat(fetched_objects)

    start_at += PAGE_SIZE

    break if fetched_objects.empty?
  end

  log.debug { all_objects.collect(&:name).join(", ") }

  all_objects
end