func ConfigAndEnvProcessing() error {
	configPath := filepath.Dir(root.IstioConfig)
	baseName := filepath.Base(root.IstioConfig)
	configType := filepath.Ext(root.IstioConfig)
	configName := baseName[0 : len(baseName)-len(configType)]
	if configType != "" {
		configType = configType[1:]
	}

	// Allow users to override some variables through $HOME/.istioctl/config.yaml
	// and environment variables.

        if (StringUtil.isNotBlank(scriptType)) {
            return scriptType;
        }
        return Constants.DEFAULT_SCRIPT;
    }

    public enum ConfigType {
        WEB("W"), FILE("F"), DATA("D");

        private final String typePrefix;

        ConfigType(final String typePrefix) {
            this.typePrefix = typePrefix;
        }

        public String getTypePrefix() {
            return typePrefix;

            try {
                boost = Float.parseFloat(value);
            } catch (final Exception e) {}
        }
    }

    @Override
    public String getConfigId() {
        return ConfigType.WEB.getConfigId(getId());
    }

    @Override
    public CrawlerClientFactory initializeClientFactory(final Supplier<CrawlerClientFactory> creator) {
        if (crawlerClientFactory != null) {

    @Override
    public String getIndexingTarget(final String input) {
        // always return true
        return Constants.TRUE;
    }

    @Override
    public String getConfigId() {
        return ConfigType.DATA.getConfigId(getId());
    }

    public Map<String, String> getHandlerParameterMap() {
        if (handlerParameterMap == null) {
            handlerParameterMap = ParameterUtil.parse(getHandlerParameter());

            final String[] values = configName.split("/");
            if (values.length == 2) {
                final String configIndex = values[0];
                final String configType = values[1];

                final boolean isFessIndex = DOC_INDEX.equals(configIndex);
                final String indexName;
                if (isFessIndex) {