
com.influxdb.client.write.PointSettings Maven / Gradle / Ivy
/*
* The MIT License
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.influxdb.client.write;
import java.util.Map;
import java.util.TreeMap;
import java.util.function.Function;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import com.influxdb.utils.Arguments;
/**
* The setting for store data point: default values, threshold, ...
*
* @author Jakub Bednar (bednar@github) (28/06/2019 09:06)
*/
@SuppressWarnings("RegExpRedundantEscape")
public final class PointSettings {
// Android compiler compatibility
private static final Pattern ENV_PROPERTY = Pattern.compile("(\\$\\{env\\.)(.+)\\}");
private static final Pattern SYSTEM_PROPERTY = Pattern.compile("(\\$\\{)(.+)(\\})");
private final Map defaultTags = new TreeMap<>();
/**
* Add default tag.
*
* @param key the tag name
* @param expression the tag value expression
* @return this
*/
@Nonnull
public PointSettings addDefaultTag(@Nonnull final String key,
@Nullable final String expression) {
Arguments.checkNotNull(key, "tagName");
defaultTags.put(key, expression);
return this;
}
/**
* Get default tags with evaluated expressions.
*
* @return evaluated default tags
*/
@Nonnull
Map getDefaultTags() {
Function evaluation = expression -> {
if (expression == null) {
return null;
}
// env property
Matcher matcher = ENV_PROPERTY.matcher(expression);
if (matcher.matches()) {
return System.getenv(matcher.group(2));
}
// system property
matcher = SYSTEM_PROPERTY.matcher(expression);
if (matcher.matches()) {
return System.getProperty(matcher.group(2));
}
return expression;
};
return defaultTags
.entrySet()
.stream()
.map(entry -> new String[]{entry.getKey(), evaluation.apply(entry.getValue())})
.filter(keyValue -> keyValue[1] != null)
.collect(Collectors.toMap(keyValue -> keyValue[0], keyValue -> keyValue[1], (o, n) -> n, TreeMap::new));
}
}
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