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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  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 io.undertow.server.handlers;

import io.undertow.UndertowMessages;
import io.undertow.attribute.ExchangeAttribute;
import io.undertow.attribute.ExchangeAttributes;
import io.undertow.server.HandlerWrapper;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.handlers.builder.HandlerBuilder;
import io.undertow.util.HttpString;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

/**
 * Set a fixed response header.
 *
 * @author Stuart Douglas
 */
public class SetHeaderHandler implements HttpHandler {

    private final HttpString header;
    private final ExchangeAttribute value;
    private final HttpHandler next;

    public SetHeaderHandler(final String header, final String value) {
        if(value == null) {
            throw UndertowMessages.MESSAGES.argumentCannotBeNull("value");
        }
        if(header == null) {
            throw UndertowMessages.MESSAGES.argumentCannotBeNull("header");
        }
        this.next = ResponseCodeHandler.HANDLE_404;
        this.value = ExchangeAttributes.constant(value);
        this.header = new HttpString(header);
    }

    public SetHeaderHandler(final HttpHandler next, final String header, final ExchangeAttribute value) {
        if(value == null) {
            throw UndertowMessages.MESSAGES.argumentCannotBeNull("value");
        }
        if(header == null) {
            throw UndertowMessages.MESSAGES.argumentCannotBeNull("header");
        }
        if(next == null) {
            throw UndertowMessages.MESSAGES.argumentCannotBeNull("next");
        }
        this.next = next;
        this.value = value;
        this.header = new HttpString(header);
    }

    public SetHeaderHandler(final HttpHandler next, final String header, final String value) {
        if(value == null) {
            throw UndertowMessages.MESSAGES.argumentCannotBeNull("value");
        }
        if(header == null) {
            throw UndertowMessages.MESSAGES.argumentCannotBeNull("header");
        }
        if(next == null) {
            throw UndertowMessages.MESSAGES.argumentCannotBeNull("next");
        }
        this.next = next;
        this.value = ExchangeAttributes.constant(value);
        this.header = new HttpString(header);
    }
    @Override
    public void handleRequest(final HttpServerExchange exchange) throws Exception {
        exchange.getResponseHeaders().put(header, value.readAttribute(exchange));
        next.handleRequest(exchange);
    }

    public ExchangeAttribute getValue() {
        return value;
    }

    public HttpString getHeader() {
        return header;
    }

    @Override
    public String toString() {
        return "set( header='" + header.toString() + "', value='" + value.toString() + "' )";
    }

    public static class Builder implements HandlerBuilder {
        @Override
        public String name() {
            return "header";
        }

        @Override
        public Map> parameters() {
            Map> parameters = new HashMap<>();
            parameters.put("header", String.class);
            parameters.put("value", ExchangeAttribute.class);

            return parameters;
        }

        @Override
        public Set requiredParameters() {
            final Set req = new HashSet<>();
            req.add("value");
            req.add("header");
            return req;
        }

        @Override
        public String defaultParameter() {
            return null;
        }

        @Override
        public HandlerWrapper build(final Map config) {
            final ExchangeAttribute value = (ExchangeAttribute) config.get("value");
            final String header = (String) config.get("header");

            return new HandlerWrapper() {
                @Override
                public HttpHandler wrap(HttpHandler handler) {
                    return new SetHeaderHandler(handler, header, value);
                }
            };
        }
    }
}