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Abbreviate.java
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Abbreviate.java
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/**
* This file is part of Graylog Pipeline Processor.
*
* Graylog Pipeline Processor is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog Pipeline Processor is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog Pipeline Processor. If not, see <http://www.gnu.org/licenses/>.
*/
package org.graylog.plugins.pipelineprocessor.functions.strings;
import com.google.common.collect.ImmutableList;
import org.apache.commons.lang3.StringUtils;
import org.graylog.plugins.pipelineprocessor.EvaluationContext;
import org.graylog.plugins.pipelineprocessor.ast.functions.AbstractFunction;
import org.graylog.plugins.pipelineprocessor.ast.functions.FunctionArgs;
import org.graylog.plugins.pipelineprocessor.ast.functions.FunctionDescriptor;
import org.graylog.plugins.pipelineprocessor.ast.functions.ParameterDescriptor;
import static com.google.common.primitives.Ints.saturatedCast;
public class Abbreviate extends AbstractFunction<String> {
public static final String NAME = "abbreviate";
private static final String VALUE = "value";
private static final String WIDTH = "width";
@Override
public String evaluate(FunctionArgs args, EvaluationContext context) {
final String value = args.param(VALUE).evalRequired(args, context, String.class);
final Long maxWidth = args.param(WIDTH).evalRequired(args, context, Long.class);
return StringUtils.abbreviate(value, saturatedCast(maxWidth));
}
@Override
public FunctionDescriptor<String> descriptor() {
ImmutableList.Builder<ParameterDescriptor> params = ImmutableList.builder();
params.add();
return FunctionDescriptor.<String>builder()
.name(NAME)
.returnType(String.class)
.params(ImmutableList.of(
ParameterDescriptor.string(VALUE).build(),
ParameterDescriptor.string(WIDTH).build()
))
.build();
}
}