Class: Avro::Builder::DSL
- Inherits:
-
Object
- Object
- Avro::Builder::DSL
- Includes:
- DslAttributes, DslOptions, FileHandler, TypeFactory
- Defined in:
- lib/avro/builder/dsl.rb
Overview
This class is used to construct Avro schemas (not protocols) using a ruby DSL
Constant Summary
Constants included from TypeFactory
TypeFactory::BUILTIN_TYPES, TypeFactory::COMPLEX_TYPES
Instance Method Summary collapse
- #as_schema ⇒ Object
-
#enum(name = nil, *symbols, **options, &block) ⇒ Object
DSL methods for Types.
- #fixed(name = nil, size = nil, options = {}, &block) ⇒ Object
-
#import(name) ⇒ Object
Imports from the file with specified name fragment.
-
#initialize(str = nil, &block) ⇒ DSL
constructor
An instance of the DSL is initialized with a string or a block to evaluate to define Avro schema objects.
-
#record(name = nil, options = {}, &block) ⇒ Object
Define an Avro schema record.
-
#to_h ⇒ Object
Return the last schema object processed as a Hash representing the Avro schema.
-
#to_json(validate: true, pretty: true) ⇒ Object
Return the last schema object processed as an Avro JSON schema.
Methods included from FileHandler
Methods included from DslAttributes
Methods included from DslOptions
Constructor Details
#initialize(str = nil, &block) ⇒ DSL
An instance of the DSL is initialized with a string or a block to evaluate to define Avro schema objects.
27 28 29 |
# File 'lib/avro/builder/dsl.rb', line 27 def initialize(str = nil, &block) str ? instance_eval(str) : instance_eval(&block) end |
Instance Method Details
#as_schema ⇒ Object
72 73 74 |
# File 'lib/avro/builder/dsl.rb', line 72 def as_schema Avro::Schema.parse(to_json(validate: false)) end |
#enum(name = nil, *symbols, **options, &block) ⇒ Object
DSL methods for Types
46 47 48 |
# File 'lib/avro/builder/dsl.rb', line 46 def enum(name = nil, *symbols, **, &block) create_named_type(name, :enum, { symbols: symbols }.merge(), &block) end |
#fixed(name = nil, size = nil, options = {}, &block) ⇒ Object
50 51 52 53 |
# File 'lib/avro/builder/dsl.rb', line 50 def fixed(name = nil, size = nil, = {}, &block) size_option = size.is_a?(Hash) ? size : { size: size } create_named_type(name, :fixed, size_option.merge(), &block) end |
#import(name) ⇒ Object
Imports from the file with specified name fragment.
37 38 39 40 41 42 |
# File 'lib/avro/builder/dsl.rb', line 37 def import(name) previous_namespace = namespace result = eval_file(name) namespace(previous_namespace) result end |
#record(name = nil, options = {}, &block) ⇒ Object
Define an Avro schema record
32 33 34 |
# File 'lib/avro/builder/dsl.rb', line 32 def record(name = nil, = {}, &block) create_named_type(name, :record, , &block) end |
#to_h ⇒ Object
Return the last schema object processed as a Hash representing the Avro schema.
57 58 59 |
# File 'lib/avro/builder/dsl.rb', line 57 def to_h @last_object.to_h(SchemaSerializerReferenceState.new) end |
#to_json(validate: true, pretty: true) ⇒ Object
Return the last schema object processed as an Avro JSON schema
62 63 64 65 66 67 68 69 70 |
# File 'lib/avro/builder/dsl.rb', line 62 def to_json(validate: true, pretty: true) hash = to_h (pretty ? JSON.pretty_generate(hash) : hash.to_json).tap do |json| # Uncomment the next line to debug: # puts json # Parse the schema to validate before returning ::Avro::Schema.parse(json) if validate end end |