Github user vlsi commented on a diff in the pull request:
https://github.com/apache/jmeter/pull/291#discussion_r113696887
--- Diff: src/functions/org/apache/jmeter/functions/TimeShift.java ---
@@ -0,0 +1,188 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ *
+ */
+
+package org.apache.jmeter.functions;
+
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.Year;
+import java.time.ZoneId;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeFormatterBuilder;
+import java.time.format.DateTimeParseException;
+import java.time.temporal.ChronoField;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.jmeter.engine.util.CompoundVariable;
+import org.apache.jmeter.samplers.SampleResult;
+import org.apache.jmeter.samplers.Sampler;
+import org.apache.jmeter.threads.JMeterVariables;
+import org.apache.jmeter.util.JMeterUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * timeShifting Function permit to shift a date
+ *
+ * Parameters:
+ * - format date @see
+ *
https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html
+ * (optional - defaults to epoch time in millisecond)
+ * - date to shift formated
+ * as first param (optional - defaults now)
+ * - amount of (seconds, minutes,
+ * hours, days or months ) to add (optional - default nothing is add )
+ * - variable name ( optional )
+ *
+ * Returns: a formatted date with the specified number of (seconds,
+ * minutes, hours, days or months ) added. - value is also saved in the
+ * variable for later re-use.
+ *
+ * @since 3.3
+ */
+public class TimeShift extends AbstractFunction {
+ private static final Logger log =
LoggerFactory.getLogger(TimeShift.class);
+
+ private static final String KEY = "__timeShift"; // $NON-NLS-1$
+
+ private static final List<String> desc = Arrays.asList(
+ JMeterUtils.getResString("time_format_shift"),
+ JMeterUtils.getResString("date_to_shift"),
+ JMeterUtils.getResString("value_to_shift"),
+ JMeterUtils.getResString("function_name_paropt"));
+
+ // Ensure that these are set, even if no paramters are provided
+ private String format = ""; //$NON-NLS-1$
+ private String dateToShift = ""; //$NON-NLS-1$
+ private String amountToShift = ""; //$NON-NLS-1$
+ private String variableName = ""; //$NON-NLS-1$
+ private Pattern pattern =
Pattern.compile("(?:((?:[+-])?\\d+)([MdHms]))");
+
+ public TimeShift() {
+ super();
+ }
+
+ /** {@inheritDoc} */
+ @Override
+ public String execute(SampleResult previousResult, Sampler
currentSampler) throws InvalidVariableException {
+ String dateString;
+ LocalDateTime localDateTimeToShift =
LocalDateTime.now(ZoneId.systemDefault());
+ DateTimeFormatter formatter = null;
+ if (!StringUtils.isEmpty(format)) {
+ try {
+ formatter = new
DateTimeFormatterBuilder().appendPattern(format)
--- End diff --
I wonder how much does it cost to build this formatter thing. Is it
something that should be cached?
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