Refactor GlobalControllerExceptionHandler

Issue-ID: POLICY-3530
Change-Id: Ib33daf8491c1bf96460b424e8b0da228d65e571a
Signed-off-by: FrancescoFioraEst <francesco.fiora@est.tech>

2 files changed, 97 insertions, 0 deletions

diff --git a/models/src/main/java/org/onap/policy/clamp/controlloop/models/rest/RestUtils.java b/models/src/main/java/org/onap/policy/clamp/controlloop/models/rest/RestUtils.java
new file mode 100644
index 000000000..6c12c2de7
--- /dev/null
+++ b/models/src/main/java/org/onap/policy/clamp/controlloop/models/rest/RestUtils.java
@@ -0,0 +1,43 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.models.rest;
+
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import org.onap.policy.clamp.controlloop.models.messages.rest.SimpleResponse;
+import org.onap.policy.models.errors.concepts.ErrorResponseInfo;
+import org.springframework.http.ResponseEntity;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public final class RestUtils {
+
+    /**
+     * Convert an ErrorResponseInfo to a ResponseEntity.
+     *
+     * @param ex the ErrorResponseInfo
+     * @return the ResponseEntity
+     */
+    public static ResponseEntity<SimpleResponse> toSimpleResponse(ErrorResponseInfo ex) {
+        var resp = new SimpleResponse();
+        resp.setErrorDetails(ex.getErrorResponse().getErrorMessage());
+        return ResponseEntity.status(ex.getErrorResponse().getResponseCode().getStatusCode()).body(resp);
+    }
+}
diff --git a/models/src/test/java/org/onap/policy/clamp/controlloop/models/rest/RestUtilsTest.java b/models/src/test/java/org/onap/policy/clamp/controlloop/models/rest/RestUtilsTest.java
new file mode 100644
index 000000000..4dedae200
--- /dev/null
+++ b/models/src/test/java/org/onap/policy/clamp/controlloop/models/rest/RestUtilsTest.java
@@ -0,0 +1,54 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.models.rest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import javax.ws.rs.core.Response.Status;
+import org.junit.jupiter.api.Test;
+import org.onap.policy.models.errors.concepts.ErrorResponse;
+import org.onap.policy.models.errors.concepts.ErrorResponseInfo;
+
+class RestUtilsTest {
+
+    private static final String MESSAGE_ERROR = "Erorr";
+    private static final Status STATUS_ERROR = Status.BAD_REQUEST;
+
+    @Test
+    void testToSimpleResponse() {
+        var ex = new ErrorResponseInfo() {
+
+            @Override
+            public ErrorResponse getErrorResponse() {
+                var er = new ErrorResponse();
+                er.setErrorMessage(MESSAGE_ERROR);
+                er.setResponseCode(STATUS_ERROR);
+                return er;
+            }
+        };
+
+        var response = RestUtils.toSimpleResponse(ex);
+
+        assertThat(response.getStatusCodeValue()).isEqualTo(STATUS_ERROR.getStatusCode());
+        assertThat(response.getBody()).isNotNull();
+        assertThat(response.getBody().getErrorDetails()).isEqualTo(MESSAGE_ERROR);
+    }
+}