private Path download()

in arthur-impl/src/main/java/org/apache/geronimo/arthur/impl/nativeimage/installer/SdkmanGraalVMInstaller.java [122:142]

• 20 lines of code
• 4 McCabe index (conditional complexity)

    private Path download() throws IOException {
        final String fname = "graal-" + configuration.getVersion() + "-" + configuration.getPlatform() + "." + configuration.getGav().split(":")[2];
        final Path cache = configuration.getWorkdir().resolve(fname);
        if (Files.exists(cache)) {
            return cache;
        }

        final URL source = new URL(configuration.getUrl());
        final HttpURLConnection connection = HttpURLConnection.class.cast(source.openConnection());
        connection.setUseCaches(false);
        connection.setInstanceFollowRedirects(true); // sdkman broker redirects on github
        try (final InputStream stream = new BufferedInputStream(connection.getInputStream())) {
            Files.copy(stream, cache);
        } catch (final IOException ioe) {
            if (Files.exists(cache)) {
                Files.delete(cache);
            }
            throw ioe;
        }
        return cache;
    }