1 files changed, 125 insertions, 0 deletions
diff --git a/aai-els-onap-logging/src/main/java/org/onap/aai/logging/LogFormatTools.java b/aai-els-onap-logging/src/main/java/org/onap/aai/logging/LogFormatTools.java
new file mode 100644
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+++ b/aai-els-onap-logging/src/main/java/org/onap/aai/logging/LogFormatTools.java
@@ -0,0 +1,125 @@
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 AT&T Intellectual Property. 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=========================================================
+ */
+
+package org.onap.aai.logging;
+
+import org.apache.commons.lang.exception.ExceptionUtils;
+import org.onap.aai.exceptions.AAIException;
+import org.onap.aai.util.AAIConfig;
+import org.onap.aai.util.AAIConstants;
+
+import java.time.Instant;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+
+public class LogFormatTools {
+
+    private static final String DATE_FORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";
+    private static final DateTimeFormatter DTF = DateTimeFormatter.ofPattern(DATE_FORMAT).withZone(ZoneOffset.UTC);
+
+    public static String getCurrentDateTime() {
+        return DTF.format(ZonedDateTime.now());
+    }
+
+    public static String toDate(long timestamp) {
+        return DTF.format(Instant.ofEpochMilli(timestamp));
+    }
+
+    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) {
+        // StringBuilder is more efficient than StringBuffer and should only
+        // StringBuffer is only supposed to be used if multiple threads are modifying
+        // the same object and since this object is created locally not necessary
+        StringBuilder stackMessage = new StringBuilder();
+        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++;
+                }
+            }
+        }
+        String stackMessageStr = stackMessage.toString();
+        stackMessageStr = stackMessageStr.replaceAll("\\n", "^");
+        return stackMessageStr;
+    }
+
+}