fish.payara.microprofile.metrics.activation.MetricsSniffer Maven / Gradle / Ivy

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 * Copyright (c) [2020] Payara Foundation and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://github.com/payara/Payara/blob/master/LICENSE.txt
 * See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * The Payara Foundation designates this particular file as subject to the "Classpath"
 * exception as provided by the Payara Foundation in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
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package fish.payara.microprofile.metrics.activation;

import java.io.File;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.inject.Inject;

import org.eclipse.microprofile.metrics.Metric;
import org.eclipse.microprofile.metrics.MetricRegistry;
import org.glassfish.api.admin.ServerEnvironment;
import org.glassfish.api.deployment.DeploymentContext;
import org.glassfish.api.deployment.archive.ReadableArchive;
import org.glassfish.hk2.api.PerLookup;
import org.glassfish.hk2.classmodel.reflect.Types;
import org.jvnet.hk2.annotations.Service;

import fish.payara.microprofile.connector.MicroProfileSniffer;

@Service
@PerLookup
public class MetricsSniffer extends MicroProfileSniffer {

    private static final Logger LOGGER = Logger.getLogger(MetricsSniffer.class.getName());

    @Inject
    private ServerEnvironment serverEnv;

    @Override
    @SuppressWarnings("unchecked")
    public Class[] getAnnotationTypes() {
        return new Class[] {
            // Search for Metrics annotations
            org.eclipse.microprofile.metrics.annotation.Counted.class,
            org.eclipse.microprofile.metrics.annotation.ConcurrentGauge.class,
            org.eclipse.microprofile.metrics.annotation.Gauge.class,
            org.eclipse.microprofile.metrics.annotation.Metered.class,
            org.eclipse.microprofile.metrics.annotation.Metric.class,
            org.eclipse.microprofile.metrics.annotation.Timed.class,
            org.eclipse.microprofile.metrics.annotation.RegistryType.class,

            // All JAX-RS applications are valid applications for Metrics
            javax.ws.rs.Path.class
        };
    }

    @Override
    public boolean handles(DeploymentContext context) {
        final Types types = context.getTransientAppMetaData(Types.class.getName(), Types.class);

        if (types != null) {
            if (types.getBy(MetricRegistry.class.getName()) != null) {
                return true;
            }

            if (types.getBy(Metric.class.getName()) != null) {
                return true;
            }
        }

        return super.handles(context);
    }

    @Override
    public boolean handles(ReadableArchive archive) {
        // Check for metrics.xml files
        try {
            if (archive.exists("metrics.xml")) {
                return true;
            }
            File metricsResource = new File(serverEnv.getConfigDirPath(), "metrics.xml");
            if (metricsResource.exists()) {
                return true;
            }
        } catch (IOException e) {
            LOGGER.log(Level.WARNING, "Error reading archive", e);
            return false;
        }

        return super.handles(archive);
    }

    @Override
    protected Class getContainersClass() {
        return MetricsContainer.class;
    }

    @Override
    public String getModuleType() {
        return "metrics";
    }
    
}