Class: Fluent::BigQueryOutput::RecordSchema

Inherits:
FieldSchema
  • Object
show all
Defined in:
lib/fluent/plugin/out_bigquery.rb

Constant Summary collapse

FIELD_TYPES = 
{
  :string => StringFieldSchema,
  :integer => IntegerFieldSchema,
  :float => FloatFieldSchema,
  :boolean => BooleanFieldSchema,
  :timestamp => TimestampFieldSchema,
  :record => RecordSchema
}.freeze

Instance Attribute Summary

Attributes inherited from FieldSchema

#mode, #name

Instance Method Summary collapse

Methods inherited from FieldSchema

#format

Constructor Details

#initialize(name, mode = :nullable) ⇒ RecordSchema

Returns a new instance of RecordSchema.



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# File 'lib/fluent/plugin/out_bigquery.rb', line 413

def initialize(name, mode = :nullable)
  super(name, mode)
  @fields = {}
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/fluent/plugin/out_bigquery.rb', line 422

def [](name)
  @fields[name]
end

#format_one(record) ⇒ Object 



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# File 'lib/fluent/plugin/out_bigquery.rb', line 462

def format_one(record)
  out = {}
  @fields.each do |key, schema|
    value = record[key]
    formatted = schema.format(value)
    next if formatted.nil? # field does not exists, or null value
    out[key] = formatted
  end
  out
end

#load_schema(schema) ⇒ Object 



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# File 'lib/fluent/plugin/out_bigquery.rb', line 426

def load_schema(schema)
  schema.each do |field|
    raise ConfigError, 'field must have type' unless field.key?('type')

    name = field['name']
    mode = (field['mode'] || 'nullable').downcase.to_sym

    type = field['type'].downcase.to_sym
    field_schema_class = FIELD_TYPES[type]
    raise ConfigError, "Invalid field type: #{field['type']}" unless field_schema_class

    field_schema = field_schema_class.new(name, mode)
    @fields[name] = field_schema
    if type == :record
      raise ConfigError, "record field must have fields" unless field.key?('fields')
      field_schema.load_schema(field['fields'])
    end
  end
end

#register_field(name, type) ⇒ Object 



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# File 'lib/fluent/plugin/out_bigquery.rb', line 446

def register_field(name, type)
  if @fields.key?(name) and @fields[name].type != :timestamp
    raise ConfigError, "field #{name} is registered twice"
  end
  if name[/\./]
    recordname = $`
    fieldname = $'
    register_record_field(recordname)
    @fields[recordname].register_field(fieldname, type)
  else
    schema = FIELD_TYPES[type]
    raise ConfigError, "[Bug] Invalid field type #{type}" unless schema
    @fields[name] = schema.new(name)
  end
end

#type ⇒ Object 



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# File 'lib/fluent/plugin/out_bigquery.rb', line 418

def type
  :record
end