Camunda Rest OpenAPI (#171)

* Camunda Rest OpenAPI support added

dependencies.gradle

@@ -176,6 +176,7 @@ dependencyResolutionManagement { DependencyResolutionManagement it ->
 
             library('camunda7-engine', 'org.camunda.bpm', 'camunda-engine').versionRef('camunda7')
             library('camunda7-rest-jakarta', 'org.camunda.bpm', 'camunda-engine-rest-jakarta').versionRef('camunda7')
+            library('camunda7-openapi', 'org.camunda.bpm', 'camunda-engine-rest-openapi').versionRef('camunda7')
             library('fasterxml-uuidgenerator', 'com.fasterxml.uuid', 'java-uuid-generator').version('5.0.0')
             library('resteasy-undertow-jakarta', 'org.jboss.resteasy', 'resteasy-undertow').version('6.2.8.Final')
             library('jakarta-rs-api', 'jakarta.ws.rs', 'jakarta.ws.rs-api').version('3.1.0')

experimental/camunda-rest-undertow/build.gradle

@@ -11,11 +11,13 @@ dependencies {
     implementation project(":config:config-common")
     implementation project(":logging:logging-common")
     implementation libs.resteasy.undertow.jakarta
+    implementation project(":openapi:openapi-management")
     implementation project(":http:http-server-undertow")
 
     api project(":telemetry:telemetry-common")
     api project(":common")
     api libs.camunda7.rest.jakarta
+    api libs.camunda7.openapi
     api libs.jakarta.rs.api
     api libs.undertow.servlet
     api libs.undertow.core

experimental/camunda-rest-undertow/src/main/java/ru/tinkoff/kora/camunda/rest/CamundaRestConfig.java

@@ -6,6 +6,7 @@
 
 import java.time.Duration;
 import java.util.Collections;
+import java.util.List;
 import java.util.Set;
 
 @ConfigValueExtractor
@@ -27,6 +28,8 @@ default Duration shutdownWait() {
         return Duration.ofSeconds(30);
     }
 
+    CamundaOpenApiConfig openapi();
+
     CamundaRestTelemetryConfig telemetry();
 
     @ConfigValueExtractor
@@ -58,4 +61,48 @@ default String mask() {
         @Nullable
         Boolean pathTemplate();
     }
+
+    @ConfigValueExtractor
+    interface CamundaOpenApiConfig {
+
+        default List<String> file() {
+            return List.of("openapi.json");
+        }
+
+        default boolean enabled() {
+            return false;
+        }
+
+        default String endpoint() {
+            return "/openapi";
+        }
+
+        SwaggerUIConfig swaggerui();
+
+        RapidocConfig rapidoc();
+
+        @ConfigValueExtractor
+        interface SwaggerUIConfig {
+
+            default boolean enabled() {
+                return false;
+            }
+
+            default String endpoint() {
+                return "/swagger-ui";
+            }
+        }
+
+        @ConfigValueExtractor
+        interface RapidocConfig {
+
+            default boolean enabled() {
+                return false;
+            }
+
+            default String endpoint() {
+                return "/rapidoc";
+            }
+        }
+    }
 }

experimental/camunda-rest-undertow/src/main/java/ru/tinkoff/kora/camunda/rest/telemetry/CamundaRestTelemetry.java

@@ -10,6 +10,9 @@
 
 public interface CamundaRestTelemetry {
 
+    CamundaRestTelemetryContext EMPTY_CTX = (s, r, h, ex) -> {};
+    CamundaRestTelemetry EMPTY = (s, host, m, p, pt, h, q, b) -> EMPTY_CTX;
+
     interface CamundaRestTelemetryContext {
 
         void close(int statusCode, HttpResultCode resultCode, HttpHeaders headers, @Nullable Throwable exception);