Swagger Scala Module

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This is a fork of https://github.com/swagger-api/swagger-scala-module.

Release Supports
2.7.x Scala 2 builds reintroduce scala-reflect dependency and can now introspect better on inner types. See section on Treatment of Option below. This has turned into a series with many experimantal changes. If you are happy on an older version there is no need to upgrade to this series of releases.
2.6.x/2.5.x First releases to support Scala 3. Jackson 2.13, jakarta namespace jars. OpenAPI 3.0.1 / Swagger-Core 2.0.x.
2.4.x First releases to support jakarta namespace jars. Jackson 2.12, OpenAPI 3.0.1 / Swagger-Core 2.0.x.
2.3.x OpenAPI 3.0.1 / Swagger-Core 2.0.x.
1.3.0 Swagger Specification 2 / Swagger-Core 1.6.x.


To enable the swagger-scala-module, include the appropriate version in your project:

  "com.github.swagger-akka-http" %% "swagger-scala-module" % "2.7.4"

How does it work?

Including the library in your project allows the swagger extension module to discover this module, bringing in the appropriate jackson library in the process. You can then use scala classes and objects in your swagger project.

Treatment of Option and required

Prior to v2.7 releases, all properties, besides those wrapped in Option or explicitly set via annotations @Schema(required = false, implementation = classOf[Int]), default to required = true in the generated swagger model. See #7

With Collections (and Options), scala primitives are affected by type erasure. You may need to declare the type using a Schema annotation.

case class AddOptionRequest(number: Int, @Schema(required = false, implementation = classOf[Int]) number2: Option[Int] = None)

Alternatively, you can non-primitive types like BigInt to avoid this requirement.

Since the v2.7 releases, Scala 2 builds use scala-reflect jar to try to work out the class information for the inner types. Since v2.7.5, Scala 3 builds use a lib that supports runtime reflection. See #117. One issue affacting Scala 3 users is gzoller/scala-reflection#40.

v2.7 takes default values into account - either those specified in Scala contructors or via swagger annotations. A field might be marked as not required if a default value is specified.

If you use swagger annotations and don't want to explicity set the required value and allow this lib to infer the value, then you can set SwaggerScalaModelConverter.setRequiredBasedOnAnnotation.

v2.7 is still a little bit unstable and it recommended that the users who are happy with the latest v2.6 release should stick with that.

Sealed Traits

Since v2.7.5, swagger-scala-module tries to handle sealed traits and classes. If an API method uses a sealed trait/class as a parameter or return type, the OpenAPI model for that type should be a schema with an anyOf construct that contains the schemas for all the classes that extend the selaed trait/class.


Copyright 2016 SmartBear Software, Inc.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.