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Make Resttemplate thread safe by using the withHttpInfo pattern #4049

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Oct 10, 2019
Merged

Make Resttemplate thread safe by using the withHttpInfo pattern #4049

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34 changes: 5 additions & 29 deletions modules/openapi-generator/src/main/resources/Java/libraries/resttemplate/ApiClient.mustache
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Original file line number Diff line number Diff line change
Expand Up @@ -99,9 +99,6 @@ public class ApiClient {

private Map<String, Authentication> authentications;

private HttpStatus statusCode;
private MultiValueMap<String, String> responseHeaders;

private DateFormat dateFormat;

public ApiClient() {
Expand Down Expand Up @@ -154,22 +151,6 @@ 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
Expand Down Expand Up @@ -580,9 +561,9 @@ 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);
Expand Down Expand Up @@ -624,16 +605,11 @@ public class ApiClient {

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()) {
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");
}
}

Expand Down
56 changes: 47 additions & 9 deletions modules/openapi-generator/src/main/resources/Java/libraries/resttemplate/api.mustache
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,7 @@ 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}}")
Expand Down Expand Up @@ -53,16 +54,53 @@ public class {{classname}} {
/**
* {{summary}}
* {{notes}}
{{#responses}} * <p><b>{{code}}</b>{{#message}} - {{message}}{{/message}}
{{/responses}}{{#allParams}} * @param {{paramName}} {{description}}{{^description}}The {{paramName}} parameter{{/description}}
{{/allParams}}{{#returnType}} * @return {{returnType}}
{{/returnType}} * @throws RestClientException if an error occurs while attempting to invoke the API
{{#externalDocs}}
* {{description}}
* @see <a href="{{url}}">{{summary}} Documentation</a>
{{/externalDocs}}
{{#responses}}
* <p><b>{{code}}</b>{{#message}} - {{message}}{{/message}}
{{/responses}}
{{#allParams}}
* @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}
{{/allParams}}
{{#returnType}}
* @return {{returnType}}
{{/returnType}}
* @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 {{#returnType}}{{{returnType}}} {{/returnType}}{{^returnType}}void {{/returnType}}{{operationId}}({{#allParams}}{{{dataType}}} {{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}}) throws RestClientException {
{{#returnType}}
return {{operationId}}WithHttpInfo({{#allParams}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}}).getBody();
{{/returnType}}
{{^returnType}}
{{operationId}}WithHttpInfo({{#allParams}}{{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}});
{{/returnType}}
}

/**
* {{summary}}
* {{notes}}
{{#responses}}
* <p><b>{{code}}</b>{{#message}} - {{message}}{{/message}}
{{/responses}}
{{#allParams}}
* @param {{paramName}} {{description}}{{#required}} (required){{/required}}{{^required}} (optional{{#defaultValue}}, default to {{.}}{{/defaultValue}}){{/required}}
{{/allParams}}
* @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({{#allParams}}{{{dataType}}} {{paramName}}{{#hasMore}}, {{/hasMore}}{{/allParams}}) throws RestClientException {
Object postBody = {{#bodyParam}}{{paramName}}{{/bodyParam}}{{^bodyParam}}null{{/bodyParam}};
{{#allParams}}{{#required}}
// verify the required parameter '{{paramName}}' is set
Expand Down Expand Up @@ -102,7 +140,7 @@ public class {{classname}} {
String[] authNames = new String[] { {{#authMethods}}"{{name}}"{{#hasMore}}, {{/hasMore}}{{/authMethods}} };

{{#returnType}}ParameterizedTypeReference<{{{returnType}}}> returnType = new ParameterizedTypeReference<{{{returnType}}}>() {};{{/returnType}}{{^returnType}}ParameterizedTypeReference<Void> returnType = new ParameterizedTypeReference<Void>() {};{{/returnType}}
{{#returnType}}return {{/returnType}}apiClient.invokeAPI(path, HttpMethod.{{httpMethod}}, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
return apiClient.invokeAPI(path, HttpMethod.{{httpMethod}}, queryParams, postBody, headerParams, formParams, accept, contentType, authNames, returnType);
}
{{/operation}}
}
Expand Down
34 changes: 5 additions & 29 deletions ...t/petstore/java/resttemplate-withXml/src/main/java/org/openapitools/client/ApiClient.java
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Original file line number Diff line number Diff line change
Expand Up @@ -91,9 +91,6 @@ private String collectionToString(Collection<? extends CharSequence> collection)

private Map<String, Authentication> authentications;

private HttpStatus statusCode;
private MultiValueMap<String, String> responseHeaders;

private DateFormat dateFormat;

public ApiClient() {
Expand Down Expand Up @@ -146,22 +143,6 @@ public ApiClient setBasePath(String basePath) {
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
Expand Down Expand Up @@ -568,9 +549,9 @@ public String expandPath(String pathTemplate, Map<String, Object> variables) {
* @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);
Expand Down Expand Up @@ -612,16 +593,11 @@ public <T> T invokeAPI(String path, HttpMethod method, MultiValueMap<String, Str

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()) {
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");
}
}

Expand Down
15 changes: 14 additions & 1 deletion ...e/java/resttemplate-withXml/src/main/java/org/openapitools/client/api/AnotherFakeApi.java
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;


@Component("org.openapitools.client.api.AnotherFakeApi")
Expand Down Expand Up @@ -51,11 +52,23 @@ public void setApiClient(ApiClient apiClient) {
* To test special tags
* To test special tags and operation ID starting with number
* <p><b>200</b> - successful operation
* @param body client model
* @param body client model (required)
* @return Client
* @throws RestClientException if an error occurs while attempting to invoke the API
*/
public Client call123testSpecialTags(Client body) throws RestClientException {
return call123testSpecialTagsWithHttpInfo(body).getBody();
}

/**
* To test special tags
* To test special tags and operation ID starting with number
* <p><b>200</b> - successful operation
* @param body client model (required)
* @return ResponseEntity&lt;Client&gt;
* @throws RestClientException if an error occurs while attempting to invoke the API
*/
public ResponseEntity<Client> call123testSpecialTagsWithHttpInfo(Client body) throws RestClientException {
Object postBody = body;

// verify the required parameter 'body' is set
Expand Down
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