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Micro Distribution of the Payara Project
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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) [2020-2021] 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.config.activation;

import java.util.Collection;
import java.util.function.Supplier;

import jakarta.enterprise.inject.spi.Extension;

import org.eclipse.microprofile.config.Config;
import org.eclipse.microprofile.config.inject.ConfigProperties;
import org.eclipse.microprofile.config.inject.ConfigProperty;
import org.glassfish.api.deployment.DeploymentContext;
import org.glassfish.hk2.api.PerLookup;
import org.glassfish.hk2.classmodel.reflect.Type;
import org.glassfish.hk2.classmodel.reflect.Types;
import org.glassfish.weld.WeldDeployer;
import org.jvnet.hk2.annotations.Service;

import fish.payara.microprofile.config.cdi.ConfigCdiExtension;
import fish.payara.microprofile.connector.MicroProfileDeployer;

@Service
@PerLookup
public class ConfigDeployer extends MicroProfileDeployer {

    @Override
    @SuppressWarnings("unchecked")
    public ConfigApplicationContainer load(ConfigContainer container,
            DeploymentContext deploymentContext) {

        // Perform annotation scanning to see if CDI extension is required here
        // This is performed here so that the ApplicationContainer executes regardless of CDI extension state
        final Types types = deploymentContext.getTransientAppMetaData(Types.class.getName(), Types.class);


        if (types != null) {
            // The annotations that denote a Config API enabled application
            final Type annotationType = types.getBy(ConfigProperty.class.getName());
            final Type annotation2Type = types.getBy(ConfigProperties.class.getName());
            final Type classType = types.getBy(Config.class.getName());
            final boolean annotationFound = annotationType != null;
            final boolean annotation2Found = annotation2Type != null;
            final boolean classFound = classType != null;

            if (annotationFound || annotation2Found || classFound) {
                // Register the CDI extension
                final Collection> snifferExtensions = deploymentContext.getTransientAppMetaData(WeldDeployer.SNIFFER_EXTENSIONS, Collection.class);
                if (snifferExtensions != null) {
                    snifferExtensions.add(ConfigCdiExtension::new);
                }
            }
        }

        return new ConfigApplicationContainer(deploymentContext);
    }

    @Override
    public void unload(ConfigApplicationContainer applicationContainer, DeploymentContext ctx) {
    }
    
}