org.graylog.plugins.pipelineprocessor.functions.debug.MetricCounterIncrement Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog 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 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. If not, see .
*/
package org.graylog.plugins.pipelineprocessor.functions.debug;
import com.codahale.metrics.Counter;
import com.codahale.metrics.MetricRegistry;
import com.google.common.collect.ImmutableList;
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 javax.inject.Inject;
public class MetricCounterIncrement extends AbstractFunction {
public static final String NAME = "metric_counter_inc";
private final ParameterDescriptor nameParam;
private final ParameterDescriptor valueParam;
@Inject
public MetricCounterIncrement(MetricRegistry metricRegistry) {
nameParam = ParameterDescriptor.string("name", Counter.class)
.description("The counter metric name, will always be prefixed with 'org.graylog.rulemetrics.'")
.transform(name -> metricRegistry.counter(MetricRegistry.name("org.graylog.rulemetrics", name)))
.build();
valueParam = ParameterDescriptor.integer("value")
.description("Value to increment the counter by")
.optional()
.build();
}
@Override
public Void evaluate(FunctionArgs args, EvaluationContext context) {
final Counter counter = nameParam.required(args, context);
final Long aLong = valueParam.optional(args, context).orElse(1L);
//noinspection ConstantConditions
counter.inc(aLong);
return null;
}
@Override
public FunctionDescriptor descriptor() {
return FunctionDescriptor.builder()
.name(NAME)
.returnType(Void.class)
.description("")
.params(ImmutableList.of(nameParam, valueParam))
.build();
}
}