org.apache.james.mailets.TemporaryFilesystemModule.java Source code

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Here is the source code for org.apache.james.mailets.TemporaryFilesystemModule.java

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package org.apache.james.mailets;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.function.Supplier;

import org.apache.commons.io.IOUtils;
import org.apache.james.core.JamesServerResourceLoader;
import org.apache.james.filesystem.api.FileSystem;
import org.apache.james.filesystem.api.JamesDirectoriesProvider;
import org.apache.james.modules.CommonServicesModule;
import org.junit.rules.TemporaryFolder;

import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableList;
import com.google.inject.AbstractModule;
import com.google.inject.name.Names;

public class TemporaryFilesystemModule extends AbstractModule {

    private static final List<String> CONFIGURATION_FILE_NAMES = ImmutableList.of("dnsservice.xml",
            "domainlist.xml", "imapserver.xml", "keystore", "lmtpserver.xml", "mailrepositorystore.xml",
            "managesieveserver.xml", "pop3server.xml", "recipientrewritetable.xml", "smtpserver.xml",
            "usersrepository.xml", "smime.p12");

    private final Supplier<File> workingDirectory;

    private static File rootDir(TemporaryFolder temporaryFolder) {
        return temporaryFolder.getRoot();
    }

    public TemporaryFilesystemModule(TemporaryFolder temporaryFolder) {
        this(() -> TemporaryFilesystemModule.rootDir(temporaryFolder));
    }

    public TemporaryFilesystemModule(Supplier<File> workingDirectory) {
        this.workingDirectory = workingDirectory;
    }

    @Override
    protected void configure() {
        try {
            bind(JamesDirectoriesProvider.class)
                    .toInstance(new JamesServerResourceLoader(workingDirectory.get().getAbsolutePath()));
            copyResources(Paths.get(workingDirectory.get().getAbsolutePath(), "conf"));
            bindConstant().annotatedWith(Names.named(CommonServicesModule.CONFIGURATION_PATH))
                    .to(FileSystem.FILE_PROTOCOL_AND_CONF);
        } catch (IOException e) {
            Throwables.propagate(e);
        }
    }

    private void copyResources(Path resourcesFolder) throws FileNotFoundException, IOException {
        CONFIGURATION_FILE_NAMES.stream().forEach(resourceName -> copyResource(resourcesFolder, resourceName));
    }

    private void copyResource(Path resourcesFolder, String resourceName) {
        try (OutputStream outputStream = new FileOutputStream(resourcesFolder.resolve(resourceName).toFile())) {
            IOUtils.copy(ClassLoader.getSystemClassLoader().getResource(resourceName).openStream(), outputStream);
        } catch (IOException e) {
            Throwables.propagate(e);
        }
    }
}