Initial commit for AAI-UI(sparky-backend)

[aai/sparky-be.git] / src / main / java / org / openecomp / sparky / util / ErrorUtil.java

diff --git a/src/main/java/org/openecomp/sparky/util/ErrorUtil.java b/src/main/java/org/openecomp/sparky/util/ErrorUtil.java
new file mode 100644 (file)
index 0000000..9cea8b3
--- /dev/null
+++ b/src/main/java/org/openecomp/sparky/util/ErrorUtil.java
@@ -0,0 +1,63 @@
+/**
+ * ============LICENSE_START===================================================
+ * SPARKY (AAI UI service)
+ * ============================================================================
+ * Copyright © 2017 AT&T Intellectual Property.
+ * Copyright © 2017 Amdocs
+ * All rights reserved.
+ * ============================================================================
+ * 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.
+ * ============LICENSE_END=====================================================
+ *
+ * ECOMP and OpenECOMP are trademarks
+ * and service marks of AT&T Intellectual Property.
+ */
+
+
+package org.openecomp.sparky.util;
+
+/**
+ * The Class ErrorUtil.
+ */
+public class ErrorUtil {
+
+  /**
+   * Extract stack trace elements.
+   *
+   * @param maxNumberOfElementsToCapture the max number of elements to capture
+   * @param exc the exc
+   * @return the string
+   */
+  public static String extractStackTraceElements(int maxNumberOfElementsToCapture, Exception exc) {
+    StringBuilder sb = new StringBuilder(128);
+
+    StackTraceElement[] stackTraceElements = exc.getStackTrace();
+
+    if (stackTraceElements != null) {
+
+      /*
+       * We want to avoid an index out-of-bounds error, so we will make sure to only extract the
+       * number of frames from the stack trace that actually exist.
+       */
+
+      int numFramesToExtract = Math.min(maxNumberOfElementsToCapture, stackTraceElements.length);
+
+      for (int x = 0; x < numFramesToExtract; x++) {
+        sb.append(stackTraceElements[x]).append("\n");
+      }
+
+    }
+
+    return sb.toString();
+  }
+}