updated java resttemplate library template to be thread safe

Author: HugoMario

src/main/resources/handlebars/Java/libraries/resttemplate/ApiClient.mustache

@@ -91,9 +91,6 @@ public class ApiClient {
     private RestTemplate restTemplate;
 
     private Map<String, Authentication> authentications;
-
-    private HttpStatus statusCode;
-    private MultiValueMap<String, String> responseHeaders;
 
     private DateFormat dateFormat;
 
@@ -147,22 +144,6 @@ public class ApiClient {
         return this;
     }
 
-    /**
-     * Gets the status code of the previous request
-     * @return HttpStatus the status code
-     */
-    public HttpStatus getStatusCode() {
-        return statusCode;
-    }
-
-    /**
-     * Gets the response headers of the previous request
-     * @return MultiValueMap a map of response headers
-     */
-    public MultiValueMap<String, String> getResponseHeaders() {
-        return responseHeaders;
-    }
-
     /**
      * Get authentications (key: authentication name, value: authentication).
      * @return Map the currently configured authentication types
@@ -518,9 +499,9 @@ public class ApiClient {
      * @param contentType The request's Content-Type header
      * @param authNames The authentications to apply
      * @param returnType The return type into which to deserialize the response
-     * @return The response body in chosen type
+     * @return ResponseEntity&lt;T&gt; The response of the chosen type
      */
-    public <T> T invokeAPI(String path, HttpMethod method, MultiValueMap<String, String> queryParams, Object body, HttpHeaders headerParams, MultiValueMap<String, Object> formParams, List<MediaType> accept, MediaType contentType, String[] authNames, ParameterizedTypeReference<T> returnType) throws RestClientException {
+    public <T> ResponseEntity<T> invokeAPI(String path, HttpMethod method, MultiValueMap<String, String> queryParams, Object body, HttpHeaders headerParams, MultiValueMap<String, Object> formParams, List<MediaType> accept, MediaType contentType, String[] authNames, ParameterizedTypeReference<T> returnType) throws RestClientException {
         updateParamsForAuth(authNames, queryParams, headerParams);
         
         final UriComponentsBuilder builder = UriComponentsBuilder.fromHttpUrl(basePath).path(path);
@@ -542,20 +523,12 @@ public class ApiClient {
         RequestEntity<Object> requestEntity = requestBuilder.body(selectBody(body, formParams, contentType));
 
         ResponseEntity<T> responseEntity = restTemplate.exchange(requestEntity, returnType);
-        
-        statusCode = responseEntity.getStatusCode();
-        responseHeaders = responseEntity.getHeaders();
 
-        if (responseEntity.getStatusCode() == HttpStatus.NO_CONTENT) {
-            return null;
-        } else if (responseEntity.getStatusCode().is2xxSuccessful()) {
-            if (returnType == null) {
-                return null;
-            }
-            return responseEntity.getBody();
+        if (responseEntity.getStatusCode().is2xxSuccessful()) {
+            return responseEntity;
         } else {
             // The error handler built into the RestTemplate should handle 400 and 500 series errors.
-            throw new RestClientException("API returned " + statusCode + " and it wasn't handled by the RestTemplate error handler");
+            throw new RestClientException("API returned " + responseEntity.getStatusCode() + " and it wasn't handled by the RestTemplate error handler");
         }
     }
 

src/main/resources/handlebars/Java/libraries/resttemplate/api.mustache

@@ -23,6 +23,7 @@ import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
 
 {{>generatedAnnotation}}
 @Component("{{package}}.{{classname}}")
@@ -56,7 +57,7 @@ public class {{classname}} {
      * <p><b>{{code}}</b>{{#message}} - {{message}}{{/message}}
     {{/responses}}
     {{#parameters}}
-     * @param {{paramName}} {{description}}{{^description}}The {{paramName}} parameter{{/description}}
+     * @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}
     {{/parameters}}
     {{#returnType}}
      * @return {{returnType}}
@@ -67,7 +68,38 @@ public class {{classname}} {
      * @see <a href="{{url}}">{{summary}} Documentation</a>
     {{/externalDocs}}
      */
+    {{#isDeprecated}}
+    @Deprecated
+    {{/isDeprecated}}
     public {{#returnType}}{{{returnType}}} {{/returnType}}{{^returnType}}void {{/returnType}}{{operationId}}({{#parameters}}{{{dataType}}} {{paramName}}{{#hasMore}}, {{/hasMore}}{{/parameters}}) throws RestClientException {
+        {{#returnType}}
+        return {{operationId}}WithHttpInfo({{#parameters}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/parameters}}).getBody();
+        {{/returnType}}
+        {{^returnType}}
+        {{operationId}}WithHttpInfo({{#parameters}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/parameters}});
+        {{/returnType}}
+    }
+
+    /**
+     * {{summary}}
+     * {{notes}}
+     {{#responses}}
+     * <p><b>{{code}}</b>{{#message}} - {{message}}{{/message}}
+     {{/responses}}
+     {{#parameters}}
+     * @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}
+     {{/parameters}}
+     * @return ResponseEntity&lt;{{#returnType}}{{returnType}}{{/returnType}}{{^returnType}}Void{{/returnType}}&gt;
+     * @throws RestClientException if an error occurs while attempting to invoke the API
+     {{#externalDocs}}
+     * {{description}}
+     * @see <a href="{{url}}">{{summary}} Documentation</a>
+     {{/externalDocs}}
+     */
+    {{#isDeprecated}}
+    @Deprecated
+    {{/isDeprecated}}
+    public ResponseEntity<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}Void{{/returnType}}> {{operationId}}WithHttpInfo({{#parameters}}{{{dataType}}} {{paramName}}{{#hasMore}}, {{/hasMore}}{{/parameters}}) throws RestClientException {
         Object {{localVariablePrefix}}postBody = {{^isForm}}{{#bodyParam}}{{paramName}}{{/bodyParam}}{{^bodyParam}}null{{/bodyParam}}{{/isForm}}{{#isForm}}null{{/isForm}};
         {{#parameters}}
         {{#required}}
@@ -121,7 +153,7 @@ public class {{classname}} {
         String[] {{localVariablePrefix}}authNames = new String[] { {{#authMethods}}"{{name}}"{{#hasMore}}, {{/hasMore}}{{/authMethods}} };
 
         {{#returnType}}ParameterizedTypeReference<{{{returnType}}}> {{localVariablePrefix}}returnType = new ParameterizedTypeReference<{{{returnType}}}>() {};{{/returnType}}{{^returnType}}ParameterizedTypeReference<Void> {{localVariablePrefix}}returnType = new ParameterizedTypeReference<Void>() {};{{/returnType}}
-        {{#returnType}}return {{/returnType}}{{localVariablePrefix}}apiClient.invokeAPI({{localVariablePrefix}}path, HttpMethod.{{httpMethod}}, {{localVariablePrefix}}queryParams, {{localVariablePrefix}}postBody, {{localVariablePrefix}}headerParams, {{localVariablePrefix}}formParams, {{localVariablePrefix}}accept, {{localVariablePrefix}}contentType, {{localVariablePrefix}}authNames, {{localVariablePrefix}}returnType);
+        return {{localVariablePrefix}}apiClient.invokeAPI({{localVariablePrefix}}path, HttpMethod.{{httpMethod}}, {{localVariablePrefix}}queryParams, {{localVariablePrefix}}postBody, {{localVariablePrefix}}headerParams, {{localVariablePrefix}}formParams, {{localVariablePrefix}}accept, {{localVariablePrefix}}contentType, {{localVariablePrefix}}authNames, {{localVariablePrefix}}returnType);
     }
     {{/contents}}
     {{/operation}}