public static String getUserPrimaryGroup()

in bigtop-manager-stack/bigtop-manager-stack-core/src/main/java/org/apache/bigtop/manager/stack/core/utils/linux/LinuxAccountUtils.java [300:329]

• 24 lines of code
• 7 McCabe index (conditional complexity)

    public static String getUserPrimaryGroup(String user) {
        if (!isUserExists(user)) {
            return null;
        }

        // Search for user's primary group id
        int groupId = 0;
        Stream<String> lines = FileUtils.readFile2Str(new File("/etc/passwd")).lines();
        for (String line : lines.toList()) {
            String[] split = line.split(":");
            if (split[0].equals(user)) {
                groupId = Integer.parseInt(split[3]);
            }
        }

        if (groupId == 0) {
            return null;
        }

        // Search for group name
        lines = FileUtils.readFile2Str(new File("/etc/group")).lines();
        for (String line : lines.toList()) {
            String[] split = line.split(":");
            if (Integer.parseInt(split[2]) == groupId) {
                return split[0];
            }
        }

        return null;
    }