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From pmouawad <...@git.apache.org>
Subject [GitHub] jmeter pull request #291: Add time shifting function
Date Tue, 25 Apr 2017 19:55:35 GMT
Github user pmouawad commented on a diff in the pull request:

    https://github.com/apache/jmeter/pull/291#discussion_r113294069
  
    --- Diff: src/functions/org/apache/jmeter/functions/TimeShiftingFunction.java ---
    @@ -0,0 +1,186 @@
    +/*
    + * 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.Collection;
    +import java.util.LinkedList;
    +import java.util.List;
    +
    +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 / months ) to add (optional - default
nothing is add )
    + * - variable name ( optional )
    + *
    + * Returns:
    + * - Returns a formated date with the specified number of (seconds / minutes / hours
/ days / months ) added.
    + * - value is also saved in the variable for later re-use.
    + *
    + * @since 3.3
    + */
    +public class TimeShiftingFunction extends AbstractFunction {
    +    private static final Logger log = LoggerFactory.getLogger(TimeShiftingFunction.class);
    +
    +    private static final String KEY = "__timeShifting"; // $NON-NLS-1$
    +
    +    private static final List<String> desc = new LinkedList<>();
    +    
    +    static {
    +        desc.add(JMeterUtils.getResString("time_format_shift")); //$NON-NLS-1$
    +        desc.add(JMeterUtils.getResString("date_to_shift")); //$NON-NLS-1$
    +        desc.add(JMeterUtils.getResString("value_to_shift")); //$NON-NLS-1$
    +        desc.add(JMeterUtils.getResString("function_name_paropt")); //$NON-NLS-1$
    +    }
    +
    +    // 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 shift = ""; //$NON-NLS-1$
    +    private String variable = ""; //$NON-NLS-1$
    +
    +    public TimeShiftingFunction() {
    +        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)
    +                        .parseDefaulting(ChronoField.NANO_OF_SECOND, 0)
    +                        .parseDefaulting(ChronoField.MILLI_OF_SECOND, 0)
    +                        .parseDefaulting(ChronoField.SECOND_OF_MINUTE, 0)
    +                        .parseDefaulting(ChronoField.MINUTE_OF_HOUR, 0)
    +                        .parseDefaulting(ChronoField.HOUR_OF_DAY, 0)
    +                        .parseDefaulting(ChronoField.DAY_OF_MONTH, 1)
    +                        .parseDefaulting(ChronoField.MONTH_OF_YEAR, 1)
    +                        .parseDefaulting(ChronoField.YEAR_OF_ERA, Year.now().getValue())
    +                        .toFormatter(JMeterUtils.getLocale());
    +            } catch (IllegalArgumentException ex) {
    +                log.error("Pattern is invalid", ex); // $NON-NLS-1$
    +            }
    +        }
    +
    +        if (!dateToShift.isEmpty()) {
    +            try {
    +                if (formatter != null) {
    +                    localDateTimeToShift = LocalDateTime.parse(dateToShift, formatter);
    +                } else {
    +                    localDateTimeToShift = LocalDateTime.ofInstant(Instant.ofEpochMilli(Long.parseLong(dateToShift)),
ZoneId.systemDefault());
    +                }
    +            } catch (DateTimeParseException | NumberFormatException ex) {
    +                log.error("Failed to parse date to shift", ex); // $NON-NLS-1$
    --- End diff --
    
    Mention dateToShift


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