private static String getConfig()

in tool/src/main/java/com/alibaba/dcm/tool/DcmTool.java [134:144]

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

    private static String getConfig(@Nonnull String name) {
        String var = System.getenv(name);
        if (var == null || var.trim().isEmpty()) {
            var = System.getProperty(name);
        }
        if (var == null || var.trim().isEmpty()) {
            throw new IllegalStateException("fail to var " + name + ", is absent or blank string!");
        }

        return var;
    }