/
FindDropwizardMetrics.java
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/
FindDropwizardMetrics.java
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/*
* Copyright 2024 the original author or authors.
* <p>
* Licensed 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
* <p>
* https://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.openrewrite.micrometer.dropwizard;
import org.openrewrite.ExecutionContext;
import org.openrewrite.Recipe;
import org.openrewrite.TreeVisitor;
import org.openrewrite.java.JavaIsoVisitor;
import org.openrewrite.java.MethodMatcher;
import org.openrewrite.java.tree.J;
import org.openrewrite.marker.SearchResult;
import org.openrewrite.micrometer.table.DropwizardMetricsInUse;
public class FindDropwizardMetrics extends Recipe {
final transient DropwizardMetricsInUse metrics = new DropwizardMetricsInUse(this);
@Override
public String getDisplayName() {
return "Find Dropwizard metrics";
}
@Override
public String getDescription() {
return "Find uses of Dropwizard metrics that could be converted to a more modern metrics instrumentation library.";
}
@Override
public TreeVisitor<?, ExecutionContext> getVisitor() {
MethodMatcher counter = new MethodMatcher("com.codahale.metrics.MetricRegistry counter(..)");
MethodMatcher gauge = new MethodMatcher("com.codahale.metrics.MetricRegistry gauge(..)");
return new JavaIsoVisitor<>() {
@Override
public J.MethodInvocation visitMethodInvocation(J.MethodInvocation method, ExecutionContext ctx) {
if (counter.matches(method) || gauge.matches(method)) {
String metricType = counter.matches(method) ? "Counter" : "Gauge";
metrics.insertRow(ctx, new DropwizardMetricsInUse.Row(
getCursor().firstEnclosingOrThrow(J.CompilationUnit.class).getSourcePath().toString(),
metricType,
method.printTrimmed(getCursor())
));
return SearchResult.found(method, metricType);
}
return super.visitMethodInvocation(method, ctx);
}
};
}
}