X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=aai-core%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Faai%2Flogging%2FLogFormatTools.java;h=19650b65e75695c2e298ceeb18f1822af9e1d301;hb=6b98bb3ec93a0bbfbe0e660cabc69978b53bfee8;hp=702741b1e4b032e226fafe9791b9452dd7918a8e;hpb=89e91557997a4fc11db1b574e13c07b2149a63e3;p=aai%2Faai-common.git

diff --git a/aai-core/src/main/java/org/onap/aai/logging/LogFormatTools.java b/aai-core/src/main/java/org/onap/aai/logging/LogFormatTools.java
index 702741b1..19650b65 100644
--- a/aai-core/src/main/java/org/onap/aai/logging/LogFormatTools.java
+++ b/aai-core/src/main/java/org/onap/aai/logging/LogFormatTools.java
@@ -25,6 +25,10 @@ import java.time.Instant;
 import java.time.ZoneOffset;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
+import org.onap.aai.util.AAIConfig;
+import org.onap.aai.util.AAIConstants;
+import org.onap.aai.exceptions.AAIException;
+import org.apache.commons.lang.exception.ExceptionUtils;
 
 public class LogFormatTools {
 
@@ -43,4 +47,76 @@ public class LogFormatTools {
 	public static long toTimestamp(String date) {
 		return ZonedDateTime.parse(date, DTF).toInstant().toEpochMilli();
 	}
+	/**
+	 * Gets the stack top.
+	 *
+	 * @param e the e
+	 * @return the stack top
+	 * @throws NumberFormatException the number format exception
+	 * @throws AAIException the AAI exception
+	 */
+	public static String getStackTop(Throwable e) {
+		StringBuffer stackMessage = new StringBuffer();
+		int maxStackTraceEntries = 10;
+		try {
+			maxStackTraceEntries = Integer.valueOf(AAIConfig.get(AAIConstants.LOGGING_MAX_STACK_TRACE_ENTRIES));
+		}
+		catch (AAIException a) {
+			//ignore, use default
+		}
+		catch (NumberFormatException n) {
+			//ignore, use default
+		}
+		if (e != null) {
+			Throwable rootCause = ExceptionUtils.getRootCause(e);
+			if (rootCause != null) {
+				stackMessage.append("root cause=" + ExceptionUtils.getRootCause(e));
+				StackTraceElement[] elements = rootCause.getStackTrace();
+				int i = 0;
+				for (StackTraceElement element : elements) {
+					if (i < maxStackTraceEntries) {
+						stackMessage.append(" ClassName- ");
+						stackMessage.append(element.getClassName());
+						stackMessage.append(" :LineNumber- ");
+						stackMessage.append(element.getLineNumber());
+						stackMessage.append(" :MethodName- ");
+						stackMessage.append(element.getMethodName());
+					}
+					i++;
+				}
+			} else if (e.getCause() != null) {
+				stackMessage.append("cause=" + e.getCause());
+				StackTraceElement[] elements = e.getCause().getStackTrace();
+				int i = 0;
+				for (StackTraceElement element : elements) {
+					if (i < maxStackTraceEntries) {
+						stackMessage.append(" ClassName- ");
+						stackMessage.append(element.getClassName());
+						stackMessage.append(" :LineNumber- ");
+						stackMessage.append(element.getLineNumber());
+						stackMessage.append(" :MethodName- ");
+						stackMessage.append(element.getMethodName());
+					}
+					i++;
+				}
+			} else if (e.getStackTrace() != null) {
+				stackMessage.append("ex=" + e.toString());
+				StackTraceElement[] elements = e.getStackTrace();
+				int i = 0;
+				for (StackTraceElement element : elements) {
+					if (i < maxStackTraceEntries) {
+						stackMessage.append(" ClassName- ");
+						stackMessage.append(element.getClassName());
+						stackMessage.append(" :LineNumber- ");
+						stackMessage.append(element.getLineNumber());
+						stackMessage.append(" :MethodName- ");
+						stackMessage.append(element.getMethodName());
+					}
+					i++;
+				}
+			}
+		}
+		return stackMessage.toString();
+	}
+
 }