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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common.joda;
import org.elasticsearch.common.time.DateFormatter;
import org.elasticsearch.common.time.FormatNames;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
public class JodaDeprecationPatterns {
public static final String USE_NEW_FORMAT_SPECIFIERS = "Use new java.time date format specifiiers.";
private static Map JODA_PATTERNS_DEPRECATIONS = new LinkedHashMap<>();
static {
JODA_PATTERNS_DEPRECATIONS.put("Y", "'Y' year-of-era should be replaced with 'y'. Use 'Y' for week-based-year.");
JODA_PATTERNS_DEPRECATIONS.put("y", "'y' year should be replaced with 'u'. Use 'y' for year-of-era.");
JODA_PATTERNS_DEPRECATIONS.put("C", "'C' century of era is no longer supported.");
JODA_PATTERNS_DEPRECATIONS.put("x", "'x' weak-year should be replaced with 'Y'. Use 'x' for zone-offset.");
JODA_PATTERNS_DEPRECATIONS.put("Z",
"'Z' time zone offset/id fails when parsing 'Z' for Zulu timezone. Consider using 'X'.");
JODA_PATTERNS_DEPRECATIONS.put("z",
"'z' time zone text. Will print 'Z' for Zulu given UTC timezone.");
}
/**
* Checks if date parsing pattern is deprecated.
* Deprecated here means: when it was not already prefixed with 8 (meaning already upgraded)
* and it is not a predefined pattern from FormatNames
like basic_date_time_no_millis
* and it uses pattern characters which changed meaning from joda to java like Y becomes y.
* @param pattern - a format to be checked
* @return true if format is deprecated, otherwise false
*/
public static boolean isDeprecatedPattern(String pattern) {
List patterns = DateFormatter.splitCombinedPatterns(pattern);
for (String subPattern : patterns) {
boolean isDeprecated = subPattern.startsWith("8") == false && FormatNames.exist(subPattern) == false &&
JODA_PATTERNS_DEPRECATIONS.keySet().stream()
.filter(s -> subPattern.contains(s))
.findAny()
.isPresent();
if (isDeprecated) {
return true;
}
}
return false;
}
/**
* Formats deprecation message for suggestion field in a warning header.
* Joins all warnings in a one message.
* @param pattern - a pattern to be formatted
* @return a formatted deprecation message
*/
public static String formatSuggestion(String pattern) {
List patterns = DateFormatter.splitCombinedPatterns(pattern);
Set warnings = new LinkedHashSet<>();
for (String subPattern : patterns) {
if (isDeprecatedPattern(subPattern)) {
String suggestion = JODA_PATTERNS_DEPRECATIONS.entrySet().stream()
.filter(s -> subPattern.contains(s.getKey()))
.map(s -> s.getValue())
.collect(Collectors.joining("; "));
warnings.add(suggestion);
}
}
String combinedWarning = warnings.stream()
.collect(Collectors.joining("; "));
return combinedWarning;
}
}