org.apache.hadoop.gateway.hostmap.impl.HostmapDeploymentContributorTest.java Source code

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Here is the source code for org.apache.hadoop.gateway.hostmap.impl.HostmapDeploymentContributorTest.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.hadoop.gateway.hostmap.impl;

import org.apache.commons.io.IOUtils;
import org.apache.hadoop.gateway.deploy.DeploymentContext;
import org.apache.hadoop.gateway.deploy.ProviderDeploymentContributor;
import org.apache.hadoop.gateway.filter.rewrite.impl.UrlRewriteRulesDescriptorImpl;
import org.apache.hadoop.gateway.hostmap.api.HostmapFunctionDescriptor;
import org.apache.hadoop.gateway.topology.Provider;
import org.easymock.EasyMock;
import org.jboss.shrinkwrap.api.Node;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.junit.Test;

import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.ServiceLoader;

import static org.hamcrest.CoreMatchers.containsString;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.fail;

public class HostmapDeploymentContributorTest {

    @Test
    public void testServiceLoader() throws Exception {
        ServiceLoader loader = ServiceLoader.load(ProviderDeploymentContributor.class);
        Iterator iterator = loader.iterator();
        assertThat("Service iterator empty.", iterator.hasNext());
        while (iterator.hasNext()) {
            Object object = iterator.next();
            if (object instanceof HostmapDeploymentContributor) {
                return;
            }
        }
        fail("Failed to find " + HostmapDeploymentContributor.class.getName() + " via service loader.");
    }

    @Test
    public void testDeployment() throws IOException {
        WebArchive webArchive = ShrinkWrap.create(WebArchive.class, "test-acrhive");

        UrlRewriteRulesDescriptorImpl rewriteRules = new UrlRewriteRulesDescriptorImpl();

        Map<String, String> providerParams = new HashMap<String, String>();
        providerParams.put("test-host-external", "test-host-internal");
        Provider provider = new Provider();
        provider.setEnabled(true);
        provider.setName("hostmap");
        provider.setParams(providerParams);

        DeploymentContext context = EasyMock.createNiceMock(DeploymentContext.class);
        EasyMock.expect(context.getDescriptor("rewrite")).andReturn(rewriteRules).anyTimes();
        EasyMock.expect(context.getWebArchive()).andReturn(webArchive).anyTimes();
        EasyMock.replay(context);

        HostmapDeploymentContributor contributor = new HostmapDeploymentContributor();

        assertThat(contributor.getRole(), is("hostmap"));
        assertThat(contributor.getName(), is("static"));

        // Just make sure it doesn't blow up.
        contributor.contributeFilter(null, null, null, null, null);

        // Just make sure it doesn't blow up.
        contributor.initializeContribution(context);

        contributor.contributeProvider(context, provider);

        HostmapFunctionDescriptor funcDesc = rewriteRules.getFunction("hostmap");
        assertThat(funcDesc.config(), is("/WEB-INF/hostmap.txt"));

        Node node = webArchive.get("/WEB-INF/hostmap.txt");
        String asset = IOUtils.toString(node.getAsset().openStream());
        assertThat(asset, containsString("test-host-external=test-host-internal"));

        // Just make sure it doesn't blow up.
        contributor.finalizeContribution(context);

    }

}