public void init()

in modules/mesos-ext/src/main/java/org/apache/ignite/mesos/resource/ResourceProvider.java [61:135]
58 lines of code
21 McCabe index (conditional complexity)

    public void init(ClusterProperties props, IgniteProvider provider, String baseUrl) throws IOException {
        if (props.ignitePackageUrl() == null && props.ignitePackagePath() == null) {
            // Downloading ignite.
            try {
                igniteUrl = baseUrl + IGNITE_PREFIX + provider.getIgnite(props.igniteVer());
            }
            catch (Exception e) {
                log.log(Level.SEVERE, "Failed to download Ignite [err={0}, ver={1}].\n" +
                    "If application working behind NAT or Intranet and does not have access to external resources " +
                    "then you can use IGNITE_PACKAGE_URL or IGNITE_PACKAGE_PATH property that allow to use local " +
                    "resources.",
                    new Object[]{e, props.igniteVer()});
            }
        }

        if (props.ignitePackagePath() != null) {
            Path ignitePackPath = Paths.get(props.ignitePackagePath());

            if (Files.exists(ignitePackPath) && !Files.isDirectory(ignitePackPath)) {
                try {
                    String fileName = provider.copyToWorkDir(props.ignitePackagePath());

                    assert fileName != null;

                    igniteUrl = baseUrl + IGNITE_PREFIX + fileName;
                }
                catch (Exception e) {
                    log.log(Level.SEVERE, "Failed to copy Ignite to working directory [err={0}, path={1}].",
                        new Object[] {e, props.ignitePackagePath()});

                    throw e;
                }
            }
            else
                throw new IllegalArgumentException("Failed to find a ignite archive by path: "
                    + props.ignitePackagePath());
        }

        // Find all jar files into user folder.
        if (props.userLibs() != null && !props.userLibs().isEmpty()) {
            File libsDir = new File(props.userLibs());

            List<String> libs = new ArrayList<>();

            if (libsDir.isDirectory()) {
                File[] files = libsDir.listFiles();

                if (files != null) {
                    for (File lib : files) {
                        if (lib.isFile() && lib.canRead() &&
                            (lib.getName().endsWith(".jar") || lib.getName().endsWith(".JAR")))
                            libs.add(baseUrl + LIBS_PREFIX + lib.getName());
                    }
                }
            }

            libsUris = libs.isEmpty() ? null : libs;
        }

        // Set configuration url.
        if (props.igniteCfg() != null) {
            File cfg = new File(props.igniteCfg());

            if (cfg.isFile() && cfg.canRead()) {
                cfgUrl = baseUrl + CONFIG_PREFIX + cfg.getName();

                cfgName = cfg.getName();
            }
        }
        else {
            cfgName = "ignite-default-config.xml";

            cfgUrl = baseUrl + DEFAULT_CONFIG + cfgName;
        }
    }