private void downloadArtifact()

in src/main/java/org/apache/sling/installer/factory/model/impl/RepositoryAccess.java [102:145]

• 39 lines of code
• 5 McCabe index (conditional complexity)

    private void downloadArtifact(final Artifact artifact) throws IOException {
        // create fake pom
        final Path dir = Files.createTempDirectory(null);
        final List<String> lines = new ArrayList<String>();
        lines.add("<project xmlns=\"http://maven.apache.org/POM/4.0.0\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd\">");
        lines.add("    <modelVersion>4.0.0</modelVersion>");
        lines.add("    <groupId>org.apache.sling</groupId>");
        lines.add("    <artifactId>temp-artifact</artifactId>");
        lines.add("    <version>1-SNAPSHOT</version>");
        lines.add("    <dependencies>");
        lines.add("        <dependency>");
        lines.add("            <groupId>" + artifact.getGroupId() + "</groupId>");
        lines.add("            <artifactId>" + artifact.getArtifactId() + "</artifactId>");
        lines.add("            <version>" + artifact.getVersion() + "</version>");
        if ( artifact.getClassifier() != null ) {
            lines.add("            <classifier>" + artifact.getClassifier() + "</classifier>");
        }
        if ( !"bundle".equals(artifact.getType()) && !"jar".equals(artifact.getType()) ) {
            lines.add("            <type>" + artifact.getType() + "</type>");
        }
        lines.add("            <scope>provided</scope>");
        lines.add("        </dependency>");
        lines.add("    </dependencies>");
        lines.add("</project>");
        logger.info("Writing pom to {}", dir);
        Files.write(dir.resolve("pom.xml"), lines, Charset.forName("UTF-8"));

        final File output = dir.resolve("output.txt").toFile();
        final File error = dir.resolve("error.txt").toFile();

        // invoke maven
        logger.info("Invoking maven...");
        final ProcessBuilder pb = new ProcessBuilder("mvn", "verify");
        pb.directory(dir.toFile());
        pb.redirectOutput(Redirect.to(output));
        pb.redirectError(Redirect.to(error));

        final Process p = pb.start();
        try {
            p.waitFor();
        } catch (final InterruptedException e) {
            Thread.currentThread().interrupt();
        }
    }