Class: Gitlab::ImportExport::Json::NdjsonReader

Inherits:
Object
  • Object
show all
Defined in:
lib/gitlab/import_export/json/ndjson_reader.rb

Constant Summary collapse

MAX_JSON_DOCUMENT_SIZE = 
50.megabytes

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dir_path) ⇒ NdjsonReader

Returns a new instance of NdjsonReader.



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# File 'lib/gitlab/import_export/json/ndjson_reader.rb', line 11

def initialize(dir_path)
  @dir_path = dir_path
  @consumed_relations = Set.new
end

Instance Attribute Details

#dir_path ⇒ Object (readonly)

Returns the value of attribute dir_path.



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# File 'lib/gitlab/import_export/json/ndjson_reader.rb', line 9

def dir_path
  @dir_path
end

Instance Method Details

#consume_attributes(importable_path) ⇒ Object 



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# File 'lib/gitlab/import_export/json/ndjson_reader.rb', line 20

def consume_attributes(importable_path)
  # This reads from `tree/project.json`
  path = file_path("#{importable_path}.json")

  if !File.exist?(path) || Gitlab::Utils::FileInfo.linked?(path)
    raise Gitlab::ImportExport::Error, 'Invalid file'
  end

  data = File.read(path, MAX_JSON_DOCUMENT_SIZE)
  json_decode(data)
end

#consume_relation(importable_path, key, mark_as_consumed: true) ⇒ Object 



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# File 'lib/gitlab/import_export/json/ndjson_reader.rb', line 32

def consume_relation(importable_path, key, mark_as_consumed: true)
  Enumerator.new do |documents|
    next if mark_as_consumed && !@consumed_relations.add?("#{importable_path}/#{key}")

    # This reads from `tree/project/merge_requests.ndjson`
    path = file_path(importable_path, "#{key}.ndjson")

    next if !File.exist?(path) || Gitlab::Utils::FileInfo.linked?(path)

    File.foreach(path, MAX_JSON_DOCUMENT_SIZE).with_index do |line, line_num|
      documents << [json_decode(line), line_num]
    end
  end
end

#exist? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gitlab/import_export/json/ndjson_reader.rb', line 16

def exist?
  Dir.exist?(@dir_path)
end