com.eucalyptus.simpleworkflow.ws.SimpleWorkflowPipeline.java Source code

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Here is the source code for com.eucalyptus.simpleworkflow.ws.SimpleWorkflowPipeline.java

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/*************************************************************************
 * Copyright 2009-2014 Eucalyptus Systems, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 *
 * Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
 * CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
 * additional information or have any questions.
 ************************************************************************/
package com.eucalyptus.simpleworkflow.ws;

import static com.eucalyptus.auth.principal.TemporaryAccessKey.TemporaryKeyType;
import java.util.EnumSet;
import java.util.Set;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.handler.codec.http.HttpHeaders;
import org.jboss.netty.handler.codec.http.HttpRequest;
import com.eucalyptus.component.annotation.ComponentPart;
import com.eucalyptus.http.MappingHttpRequest;
import com.eucalyptus.simpleworkflow.common.SimpleWorkflow;
import com.eucalyptus.util.Strings;
import com.eucalyptus.ws.server.FilteredPipeline;
import com.eucalyptus.ws.stages.HmacUserAuthenticationStage;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;

/**
 *
 */
@ComponentPart(SimpleWorkflow.class)
public class SimpleWorkflowPipeline extends FilteredPipeline {
    private final HmacUserAuthenticationStage auth;
    private final Set<String> servicePathPrefixes = ImmutableSet.of("/services/SimpleWorkflow");

    public SimpleWorkflowPipeline() {
        auth = new HmacUserAuthenticationStage(EnumSet.allOf(TemporaryKeyType.class));
    }

    @Override
    public String getName() {
        return "simpleworkflow-query-pipeline";
    }

    @Override
    public ChannelPipeline addHandlers(final ChannelPipeline pipeline) {
        auth.unrollStage(pipeline);
        pipeline.addLast("simpleworkflow-binding", new SimpleWorkflowBinding());
        return pipeline;
    }

    @Override
    public boolean checkAccepts(final HttpRequest message) {
        if (message instanceof MappingHttpRequest) {
            final boolean targetHeaderIsSwf = Strings.startsWith("SimpleWorkflowService.")
                    .apply(message.getHeader("X-Amz-Target"));
            final boolean usesServicePath = Iterables.any(servicePathPrefixes,
                    Strings.isPrefixOf(message.getUri()));
            final boolean noPath = message.getUri().isEmpty() || message.getUri().equals("/")
                    || message.getUri().startsWith("/?");
            return targetHeaderIsSwf
                    && (usesServicePath || (noPath && resolvesByHost(message.getHeader(HttpHeaders.Names.HOST))));
        }
        return false;

    }
}