Handle headers correctly (OpenAPITools#549)

We were previously relying on some incorrect behaviour of the old
swagger-codegen mustache engine.

modules/openapi-generator/src/main/resources/rust-server/lib.mustache

@@ -42,8 +42,8 @@ pub const API_VERSION: &'static str = "{{appVersion}}";
 pub enum {{operationId}}Response {
 {{#responses}}
 {{#message}}    /// {{message}}{{/message}}
-    {{#vendorExtensions}}{{x-responseId}}{{/vendorExtensions}} {{#dataType}}{{^headers}}( {{{dataType}}} ) {{/headers}}{{#headers}}{{#-first}}{ body: {{{dataType}}}{{/-first}}{{/headers}}{{/dataType}}{{#headers}}{{#-first}}{{^dataType}} { {{/dataType}}{{#dataType}}, {{/dataType}}{{/-first}}{{^-first}}, {{/-first}}{{name}}: {{{dataType}}}{{#-last}} } {{/-last}}{{/headers}},
-{{/responses}}
+    {{#vendorExtensions}}{{{x-responseId}}}{{/vendorExtensions}} {{#dataType}}{{^hasHeaders}}( {{{dataType}}} ) {{/hasHeaders}}{{#hasHeaders}}{{#-first}}{ body: {{{dataType}}}{{/-first}}{{/hasHeaders}}{{/dataType}}{{#dataType}}{{#hasHeaders}}, {{/hasHeaders}}{{/dataType}}{{^dataType}}{{#hasHeaders}} { {{/hasHeaders}}{{/dataType}}{{#headers}}{{^-first}}, {{/-first}}{{{name}}}: {{{datatype}}}{{#-last}} } {{/-last}}{{/headers}},
+    {{/responses}}
 }
 {{/operation}}{{/operations}}{{/apis}}{{/apiInfo}}
 

modules/openapi-generator/src/test/resources/2_0/rust-server/petstore-with-fake-endpoints-models-for-testing.yaml

@@ -450,19 +450,19 @@ paths:
           required: true
           type: string
       responses:
-        # '200':
-        #   description: successful operation
-        #   schema:
-        #     type: string
-        #   headers:
-        #     X-Rate-Limit:
-        #       type: integer
-        #       format: int32
-        #       description: calls per hour allowed by the user
-        #     X-Expires-After:
-        #       type: string
-        #       format: date-time
-        #       description: date in UTC when token expires
+        '200':
+          description: successful operation
+          schema:
+            type: string
+          headers:
+            X-Rate-Limit:
+              type: integer
+              format: int32
+              description: calls per hour allowed by the user
+            X-Expires-After:
+              type: string
+              format: date-time
+              description: date in UTC when token expires
         '400':
           description: Invalid username/password supplied
   /user/logout:

samples/server/petstore/rust-server/.openapi-generator/VERSION

@@ -1 +1 @@
-3.0.1-SNAPSHOT
+3.1.1-SNAPSHOT

samples/server/petstore/rust-server/api/openapi.yaml

@@ -453,6 +453,26 @@ paths:
         schema:
           type: string
       responses:
+        200:
+          content:
+            application/xml:
+              schema:
+                type: string
+            application/json:
+              schema:
+                type: string
+          description: successful operation
+          headers:
+            X-Rate-Limit:
+              description: calls per hour allowed by the user
+              schema:
+                format: int32
+                type: integer
+            X-Expires-After:
+              description: date in UTC when token expires
+              schema:
+                format: date-time
+                type: string
         400:
           content: {}
           description: Invalid username/password supplied
@@ -1229,14 +1249,18 @@ components:
           type: array
       type: object
     OuterComposite:
-      example: {}
+      example:
+        my_string: my_string
+        my_number: 0.80082819046101150206595775671303272247314453125
+        my_boolean: true
       properties:
         my_number:
-          $ref: '#/components/schemas/OuterNumber'
+          type: number
         my_string:
-          $ref: '#/components/schemas/OuterString'
+          type: string
         my_boolean:
-          $ref: '#/components/schemas/OuterBoolean'
+          type: boolean
+          x-codegen-body-parameter-name: boolean_post_body
       type: object
     format_test:
       properties:

samples/server/petstore/rust-server/src/client/mod.rs

@@ -2526,6 +2526,38 @@ if let Some(body) = body {
                              .map_err(|e| ApiError(format!("No response received: {}", e)))
                              .and_then(|mut response| {
             match response.status().as_u16() {
+                200 => {
+                    header! { (ResponseXRateLimit, "X-Rate-Limit") => [i32] }
+                    let response_x_rate_limit = match response.headers().get::<ResponseXRateLimit>() {
+                        Some(response_x_rate_limit) => response_x_rate_limit.0.clone(),
+                        None => return Box::new(future::err(ApiError(String::from("Required response header X-Rate-Limit for response 200 was not found.")))) as Box<Future<Item=_, Error=_>>,
+                    };
+                    header! { (ResponseXExpiresAfter, "X-Expires-After") => [chrono::DateTime<chrono::Utc>] }
+                    let response_x_expires_after = match response.headers().get::<ResponseXExpiresAfter>() {
+                        Some(response_x_expires_after) => response_x_expires_after.0.clone(),
+                        None => return Box::new(future::err(ApiError(String::from("Required response header X-Expires-After for response 200 was not found.")))) as Box<Future<Item=_, Error=_>>,
+                    };
+                    let body = response.body();
+                    Box::new(
+
+                        body
+                        .concat2()
+                        .map_err(|e| ApiError(format!("Failed to read response: {}", e)))
+                        .and_then(|body| str::from_utf8(&body)
+                                             .map_err(|e| ApiError(format!("Response was not valid UTF8: {}", e)))
+                                             .and_then(|body|
+
+                                                 // ToDo: this will move to swagger-rs and become a standard From conversion trait
+                                                 // once https://github.com/RReverser/serde-xml-rs/pull/45 is accepted upstream
+                                                 serde_xml_rs::from_str::<String>(body)
+                                                     .map_err(|e| ApiError(format!("Response body did not match the schema: {}", e)))
+
+                                             ))
+                        .map(move |body|
+                            LoginUserResponse::SuccessfulOperation{ body: body, x_rate_limit: response_x_rate_limit, x_expires_after: response_x_expires_after }
+                        )
+                    ) as Box<Future<Item=_, Error=_>>
+                },
                 400 => {
                     let body = response.body();
                     Box::new(

samples/server/petstore/rust-server/src/lib.rs

@@ -242,6 +242,8 @@ pub enum GetUserByNameResponse {
 
 #[derive(Debug, PartialEq)]
 pub enum LoginUserResponse {
+    /// successful operation
+    SuccessfulOperation { body: String, x_rate_limit: i32, x_expires_after: chrono::DateTime<chrono::Utc> } ,
     /// Invalid username/password supplied
     InvalidUsername ,
 }

samples/server/petstore/rust-server/src/mimetypes.rs

@@ -64,6 +64,10 @@ pub mod responses {
     lazy_static! {
         pub static ref GET_USER_BY_NAME_SUCCESSFUL_OPERATION: Mime = "application/json".parse().unwrap();
     }
+    /// Create Mime objects for the response content types for LoginUser
+    lazy_static! {
+        pub static ref LOGIN_USER_SUCCESSFUL_OPERATION: Mime = "application/json".parse().unwrap();
+    }
 
 }
 

samples/server/petstore/rust-server/src/models.rs

@@ -762,15 +762,15 @@ impl ::std::ops::DerefMut for OuterBoolean {
 pub struct OuterComposite {
     #[serde(rename = "my_number")]
     #[serde(skip_serializing_if="Option::is_none")]
-    pub my_number: Option<models::OuterNumber>,
+    pub my_number: Option<f64>,
 
     #[serde(rename = "my_string")]
     #[serde(skip_serializing_if="Option::is_none")]
-    pub my_string: Option<models::OuterString>,
+    pub my_string: Option<String>,
 
     #[serde(rename = "my_boolean")]
     #[serde(skip_serializing_if="Option::is_none")]
-    pub my_boolean: Option<models::OuterBoolean>,
+    pub my_boolean: Option<bool>,
 
 }
 

samples/server/petstore/rust-server/src/server/mod.rs

@@ -2934,6 +2934,30 @@ where
 
                                         match result {
                                             Ok(rsp) => match rsp {
+                                                LoginUserResponse::SuccessfulOperation
+
+                                                    {
+                                                        body,
+                                                        x_rate_limit, 
+
+                                                        x_expires_after
+                                                    }
+
+
+                                                => {
+                                                    response.set_status(StatusCode::try_from(200).unwrap());
+                                                    header! { (ResponseXRateLimit, "X-Rate-Limit") => [i32] }
+                                                    response.headers_mut().set(ResponseXRateLimit(x_rate_limit));
+                                                    header! { (ResponseXExpiresAfter, "X-Expires-After") => [chrono::DateTime<chrono::Utc>] }
+                                                    response.headers_mut().set(ResponseXExpiresAfter(x_expires_after));
+
+                                                    response.headers_mut().set(ContentType(mimetypes::responses::LOGIN_USER_SUCCESSFUL_OPERATION.clone()));
+
+
+                                                    let body = serde_xml_rs::to_string(&body).expect("impossible to fail to serialize");
+
+                                                    response.set_body(body);
+                                                },
                                                 LoginUserResponse::InvalidUsername