[julia] fix enum default vals, add api validations (OpenAPITools#20520)

- Fix enum default value generation. Default values were falling back to the default code generator and were being generated improperly for Julia.
- Add more validations to client and server API call handlers. These validations were already being generated for models, but were missed out for API calls.

Author: tanmaykm

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJuliaCodegen.java

@@ -437,6 +437,18 @@ public String toDefaultValue(Schema schema) {
         return "nothing";
     }
 
+    @Override
+    public String toEnumDefaultValue(String value, String datatype) {
+        // we do not generate any separate enum structure in Julia
+        return value;
+    }
+
+    @Override
+    public String toEnumVarName(String value, String datatype) {
+        // we do not generate any separate enum structure in Julia
+        return value;
+    }
+
     @Override
     public String escapeUnsafeCharacters(String input) {
         return input.replace("#=", "#_=").replace("=#", "=_#");

modules/openapi-generator/src/main/resources/julia-client/api.mustache

@@ -43,6 +43,21 @@ function _oacinternal_{{operationId}}(_api::{{classname}}{{#allParams}}{{#requir
 {{#minItems}}
     OpenAPI.validate_param("{{paramName}}", "{{operationId}}", :minItems, {{paramName}}, {{minItems}})
 {{/minItems}}
+{{#uniqueItems}}
+    OpenAPI.validate_param("{{paramName}}", "{{operationId}}", :uniqueItems, {{paramName}}, {{uniqueItems}})
+{{/uniqueItems}}
+{{#maxProperties}}
+        OpenAPI.validate_param("{{paramName}}", "{{operationId}}", :maxProperties, {{paramName}}, {{maxProperties}})
+{{/maxProperties}}
+{{#minProperties}}
+        OpenAPI.validate_param("{{paramName}}", "{{operationId}}", :minProperties, {{paramName}}, {{minProperties}})
+{{/minProperties}}
+{{#pattern}}
+        OpenAPI.validate_param("{{paramName}}", "{{operationId}}", :pattern, {{paramName}}, r"{{{pattern}}}")
+{{/pattern}}
+{{#multipleOf}}
+        OpenAPI.validate_param("{{paramName}}", "{{operationId}}", :multipleOf, {{paramName}}, {{multipleOf}})
+{{/multipleOf}}
 
 {{/hasValidation}}
 {{/allParams}}

modules/openapi-generator/src/main/resources/julia-server/api.mustache

@@ -43,6 +43,21 @@ function {{operationId}}_validate(handler)
         {{#minItems}}
         OpenAPI.validate_param("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", "{{operationId}}", :minItems, openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"], {{minItems}})
         {{/minItems}}
+        {{#uniqueItems}}
+        OpenAPI.validate_param("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", "{{operationId}}", :uniqueItems, openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"], {{uniqueItems}})
+        {{/uniqueItems}}
+        {{#maxProperties}}
+        OpenAPI.validate_param("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", "{{operationId}}", :maxProperties, openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"], {{maxProperties}})
+        {{/maxProperties}}
+        {{#minProperties}}
+        OpenAPI.validate_param("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", "{{operationId}}", :minProperties, openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"], {{minProperties}})
+        {{/minProperties}}
+        {{#pattern}}
+        OpenAPI.validate_param("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", "{{operationId}}", :pattern, openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"], r"{{{pattern}}}")
+        {{/pattern}}
+        {{#multipleOf}}
+        OpenAPI.validate_param("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", "{{operationId}}", :multipleOf, openapi_params["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"], {{multipleOf}})
+        {{/multipleOf}}
         {{/hasValidation}}{{/allParams}}
         return handler(req)
     end

samples/client/petstore/julia/src/apis/api_UserApi.jl

@@ -172,6 +172,7 @@ const _returntypes_login_user_UserApi = Dict{Regex,Type}(
 )
 
 function _oacinternal_login_user(_api::UserApi, username::String, password::String; _mediaType=nothing)
+        OpenAPI.validate_param("username", "login_user", :pattern, username, r"^[a-zA-Z0-9]+[a-zA-Z0-9\.\-_]*[a-zA-Z0-9]+$")
 
     _ctx = OpenAPI.Clients.Ctx(_api.client, "GET", _returntypes_login_user_UserApi, "/user/login", [])
     OpenAPI.Clients.set_param(_ctx.query, "username", username; style="form", is_explode=true)  # type String

samples/server/petstore/julia/src/apis/api_UserApi.jl

@@ -155,6 +155,7 @@ function login_user_validate(handler)
     function login_user_validate_handler(req::HTTP.Request)
         openapi_params = req.context[:openapi_params]
 
+        OpenAPI.validate_param("username", "login_user", :pattern, openapi_params["username"], r"^[a-zA-Z0-9]+[a-zA-Z0-9\.\-_]*[a-zA-Z0-9]+$")
 
         return handler(req)
     end