org.jboss.as.clustering.infinispan.subsystem.SegmentedCacheResourceDefinition Maven / Gradle / Ivy

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Installs an extension that provides the infinispan subsystem.

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/*
 * Copyright The WildFly Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.jboss.as.clustering.infinispan.subsystem;

import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.UnaryOperator;
import java.util.stream.Stream;

import org.infinispan.Cache;
import org.infinispan.configuration.cache.CacheMode;
import org.infinispan.configuration.cache.ConfigurationBuilder;
import org.jboss.as.clustering.controller.ResourceDescriptor;
import org.jboss.as.clustering.controller.validation.IntRangeValidatorBuilder;
import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.OperationContext;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.as.controller.PathElement;
import org.jboss.as.controller.RequirementServiceBuilder;
import org.jboss.as.controller.SimpleAttributeDefinitionBuilder;
import org.jboss.as.controller.registry.AttributeAccess;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;
import org.wildfly.clustering.server.util.MapEntry;
import org.wildfly.subsystem.service.capture.FunctionExecutorRegistry;

/**
 * @author Paul Ferraro
 */
public class SegmentedCacheResourceDefinition extends SharedStateCacheResourceDefinition {

    enum Attribute implements org.jboss.as.clustering.controller.Attribute, UnaryOperator {
        SEGMENTS("segments", ModelType.INT, new ModelNode(256)) {
            @Override
            public SimpleAttributeDefinitionBuilder apply(SimpleAttributeDefinitionBuilder builder) {
                return builder.setValidator(new IntRangeValidatorBuilder().min(1).configure(builder).build());
            }
        },
        ;
        private final AttributeDefinition definition;

        Attribute(String name, ModelType type, ModelNode defaultValue) {
            this.definition = this.apply(new SimpleAttributeDefinitionBuilder(name, type)
                    .setAllowExpression(true)
                    .setRequired(false)
                    .setDefaultValue(defaultValue)
                    .setFlags(AttributeAccess.Flag.RESTART_RESOURCE_SERVICES)
                    ).build();
        }

        @Override
        public AttributeDefinition getDefinition() {
            return this.definition;
        }
    }

    private static class ResourceDescriptorConfigurator implements UnaryOperator {
        private final UnaryOperator configurator;

        ResourceDescriptorConfigurator(UnaryOperator configurator) {
            this.configurator = configurator;
        }

        @Override
        public ResourceDescriptor apply(ResourceDescriptor descriptor) {
            return this.configurator.apply(descriptor)
                    .addAttributes(Attribute.class)
                    ;
        }
    }

    SegmentedCacheResourceDefinition(PathElement path, UnaryOperator configurator, CacheMode mode, FunctionExecutorRegistry> executors) {
        super(path, new ResourceDescriptorConfigurator(configurator), mode, executors);
    }

    @Override
    public MapEntry, Stream>>> resolve(OperationContext context, ModelNode model) throws OperationFailedException {
        int segments = Attribute.SEGMENTS.resolveModelAttribute(context, model).asInt();

        return super.resolve(context, model).map(consumer -> consumer.andThen(new Consumer<>() {
            @Override
            public void accept(ConfigurationBuilder builder) {
                builder.clustering().hash().numSegments(segments);
            }
        }), Function.identity());
    }
}