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Apache CXF example source code file (CodeGeneratorProviderTest.java)

This example Apache CXF source code file (CodeGeneratorProviderTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Apache CXF tags/keywords

classloader, exception, exception, file, file, io, jar, list, list, message, net, network, string, string, test, uri, urisyntaxexception, url, util, zip

The Apache CXF CodeGeneratorProviderTest.java source code

/**
 * 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.cxf.jaxrs.ext.codegen;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.HashMap;
import java.util.List;
import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import org.apache.cxf.endpoint.Endpoint;
import org.apache.cxf.helpers.FileUtils;
import org.apache.cxf.jaxrs.JAXRSServiceImpl;
import org.apache.cxf.jaxrs.impl.UriInfoImpl;
import org.apache.cxf.jaxrs.model.ClassResourceInfo;
import org.apache.cxf.jaxrs.model.wadl.BookStore;
import org.apache.cxf.jaxrs.provider.ProviderFactory;
import org.apache.cxf.jaxrs.utils.ResourceUtils;
import org.apache.cxf.message.Exchange;
import org.apache.cxf.message.ExchangeImpl;
import org.apache.cxf.message.Message;
import org.apache.cxf.message.MessageImpl;
import org.apache.cxf.service.Service;
import org.apache.cxf.service.model.BindingInfo;
import org.apache.cxf.service.model.EndpointInfo;
import org.apache.cxf.transport.servlet.ServletDestination;
import org.easymock.classextension.EasyMock;
import org.easymock.classextension.IMocksControl;

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

public class CodeGeneratorProviderTest extends Assert {

    private IMocksControl control;
    
    @Before
    public void setUp() {
        control = EasyMock.createNiceControl();
        control.makeThreadSafe(true);
    }
    
    @Test
    public void testBookStoreAsInterface() throws Exception {
        generateCodeAndCheck(true, false);
    }
    
    @Test
    public void testBookStoreAsClass() throws Exception {
        generateCodeAndCheck(false, false);
    }
    
    @Test
    public void testBookStoreTypesOnly() throws Exception {
        generateCodeAndCheck(false, true);
    }
    
    private void generateCodeAndCheck(boolean generateInterfaces, boolean typesOnly) throws Exception {
        CodeGeneratorProvider cgp = new CodeGeneratorProvider();
        cgp.setGenerateInterfaces(generateInterfaces);
        
        ClassResourceInfo cri = 
            ResourceUtils.createClassResourceInfo(BookStore.class, BookStore.class, true, true);
        
        String query = CodeGeneratorProvider.CODE_QUERY + "&_os=" + getOs();
        if (typesOnly) {
            query += "&_codeType=grammar";
        }
        Message m = mockMessage("http://localhost:8080/baz", "/bar", query, null);
        try {
            cgp.removeCode(cri);
            cgp.setUriInfo(new UriInfoImpl(m, null));
            cgp.handleRequest(m, cri);
            
            String tmpdir = System.getProperty("java.io.tmpdir");
            File classes = new File(tmpdir, cgp.getStem(cri, "classes"));
            if (!classes.mkdir()) {
                fail();
            }
            File unzippedSrc = new File(tmpdir, cgp.getStem(cri, "unzip"));
            if (!unzippedSrc.mkdir()) {
                fail();
            }
            File zipDir = new File(tmpdir, cgp.getStem(cri, "zip"));
            try {             
                compileSrc(classes, unzippedSrc, new FileInputStream(new File(zipDir, "src.zip")));
                verifyClasses(classes, typesOnly);
            } finally {
                FileUtils.removeDir(classes);
                FileUtils.removeDir(unzippedSrc);
            }
        } finally {
            cgp.removeCode(cri);
        }
    }
    
    private void verifyClasses(File classesDir, boolean typesOnly) {
        List<File> clsFiles = FileUtils.getFilesRecurse(classesDir, ".+\\.class$");
        assertEquals(typesOnly ? 5 : 7, clsFiles.size());
        assertTrue(checkContains(clsFiles, "superbooks.Book.class"));
        assertTrue(checkContains(clsFiles, "superbooks.Book2.class"));
        assertTrue(checkContains(clsFiles, "superbooks.Chapter.class"));
        assertTrue(checkContains(clsFiles, "superbooks.ObjectFactory.class"));
        assertTrue(checkContains(clsFiles, "superbooks.package-info.class"));
        if (!typesOnly) {
            assertTrue(checkContains(clsFiles, "org.apache.cxf.jaxrs.model.wadl.FormInterface.class"));
            assertTrue(checkContains(clsFiles, "org.apache.cxf.jaxrs.model.wadl.BookStore.class"));
        }
    }
    
    private boolean checkContains(List<File> clsFiles, String name) {
        
        for (File f : clsFiles) {
            if (f.getAbsolutePath().replace(getPathSep(), ".").endsWith(name)) {
                return true;
            }
        }
        return false;
    }
    private String getPathSep() {
        String os = System.getProperty("os.name");
        if (os.toLowerCase().contains("win")) {
            return "\\";
        } else {
            return "/";
        }
    }
    
    private String getOs() {
        String os = System.getProperty("os.name");
        if (os.toLowerCase().contains("win")) {
            return "win";
        } else {
            return "unix";
        }
    }
    
    private void compileSrc(File classes, File unzippedSrc, InputStream zipFile) throws Exception {
        unzip(zipFile, unzippedSrc);
        StringBuilder classPath = new StringBuilder();
        try {
            setupClasspath(classPath, this.getClass().getClassLoader());
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
        
        List<File> srcFiles = FileUtils.getFilesRecurse(unzippedSrc, ".+\\.java$"); 
        if (!compileJavaSrc(classPath.toString(), srcFiles, classes.toString())) {
            fail("Could not compile classes");
        }
    }

    private void unzip(InputStream fin, File unzippedSrc) throws Exception {
        ZipInputStream zin = new ZipInputStream(fin);
        ZipEntry ze = null;
        while ((ze = zin.getNextEntry()) != null) {
            String entryName = ze.getName();
            int index = entryName.lastIndexOf(System.getProperty("file.separator"));
            File packageDir = new File(unzippedSrc, entryName.substring(0, index));
            packageDir.mkdirs();
            FileOutputStream fout = new FileOutputStream(
                                        new File(packageDir, entryName.substring(index + 1)));
            for (int c = zin.read(); c != -1; c = zin.read()) {
                fout.write(c);
            }
            zin.closeEntry();
            fout.close();
        }
        zin.close();
    }
    
    protected boolean compileJavaSrc(String classPath, List<File> srcList, String dest) {
        String[] javacCommand = new String[srcList.size() + 7];
        
        javacCommand[0] = "javac";
        javacCommand[1] = "-classpath";
        javacCommand[2] = classPath;        
        javacCommand[3] = "-d";
        javacCommand[4] = dest;
        javacCommand[5] = "-target";
        javacCommand[6] = "1.5";
        
        int i = 7;
        for (File f : srcList) {
            javacCommand[i++] = f.getAbsolutePath();            
        }
        org.apache.cxf.common.util.Compiler javaCompiler 
            = new org.apache.cxf.common.util.Compiler();
        
        return javaCompiler.internalCompile(javacCommand, 7); 
    }
    
    static void setupClasspath(StringBuilder classPath, ClassLoader classLoader)
        throws URISyntaxException, IOException {
        
        ClassLoader scl = ClassLoader.getSystemClassLoader();        
        ClassLoader tcl = classLoader;
        do {
            if (tcl instanceof URLClassLoader) {
                URL[] urls = ((URLClassLoader)tcl).getURLs();
                if (urls == null) {
                    urls = new URL[0];
                }
                for (URL url : urls) {
                    if (url.getProtocol().startsWith("file")) {
                        File file;
                        if (url.toURI().getPath() == null) {
                            continue;
                        }
                        try { 
                            file = new File(url.toURI().getPath()); 
                        } catch (URISyntaxException urise) { 
                            if (url.getPath() == null) {
                                continue;
                            }
                            file = new File(url.getPath()); 
                        } 
    
                        if (file.exists()) { 
                            classPath.append(file.getAbsolutePath()) 
                                .append(System 
                                        .getProperty("path.separator")); 
    
                            if (file.getName().endsWith(".jar")) { 
                                addClasspathFromManifest(classPath, file); 
                            }                         
                        }     
                    }
                }
            }
            tcl = tcl.getParent();
            if (null == tcl) {
                break;
            }
        } while(!tcl.equals(scl.getParent()));
    }

    static void addClasspathFromManifest(StringBuilder classPath, File file) 
        throws URISyntaxException, IOException {
        
        JarFile jar = new JarFile(file);
        Attributes attr = null;
        if (jar.getManifest() != null) {
            attr = jar.getManifest().getMainAttributes();
        }
        if (attr != null) {
            String cp = attr.getValue("Class-Path");
            while (cp != null) {
                String fileName = cp;
                int idx = fileName.indexOf(' ');
                if (idx != -1) {
                    fileName = fileName.substring(0, idx);
                    cp =  cp.substring(idx + 1).trim();
                } else {
                    cp = null;
                }
                URI uri = new URI(fileName);
                File f2;
                if (uri.isAbsolute()) {
                    f2 = new File(uri);
                } else {
                    f2 = new File(file, fileName);
                }
                if (f2.exists()) {
                    classPath.append(f2.getAbsolutePath());
                    classPath.append(System.getProperty("path.separator"));
                }
            }
        }         
    }
    
    private Message mockMessage(String baseAddress, String pathInfo, String query,
                                List<ClassResourceInfo> cris) {
        Message m = new MessageImpl();
        Exchange e = new ExchangeImpl();
        e.put(Service.class, new JAXRSServiceImpl(cris));
        
        m.setExchange(e);
        control.reset();
        ServletDestination d = control.createMock(ServletDestination.class);
        
        EndpointInfo epr = new EndpointInfo();
        epr.setAddress(baseAddress);
        
        epr.setProperty("org.apache.cxf.http.case_insensitive_queries", "false");
        epr.setProperty("org.apache.cxf.endpoint.private", "false");
        
        BindingInfo bi = control.createMock(BindingInfo.class);
        bi.getProperties();
        EasyMock.expectLastCall().andReturn(new HashMap<String, Object>()).anyTimes();
        epr.setBinding(bi);
        
        d.getEndpointInfo();
        EasyMock.expectLastCall().andReturn(epr).anyTimes();
        e.setDestination(d);
        m.put(Message.REQUEST_URI, pathInfo);
        m.put(Message.QUERY_STRING, query);
        m.put(Message.HTTP_REQUEST_METHOD, "GET");
        Endpoint endpoint = control.createMock(Endpoint.class);
        e.put(Endpoint.class, endpoint);
        endpoint.get(ProviderFactory.class.getName());
        EasyMock.expectLastCall().andReturn(ProviderFactory.getSharedInstance());
        endpoint.getEndpointInfo();
        EasyMock.expectLastCall().andReturn(epr).anyTimes();
        control.replay();
        return m;
    }
    
}

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