How to use the installer.utilities function in installer

def install_logstash():
    if not utilities.is_root():
        sys.stderr.write('[-] This script must be run as root.\n')
        sys.exit(1)
    if utilities.get_memory_available_bytes() < 6 * (1000 ** 3):
        sys.stderr.write('[-] Dynamite Logstash requires at-least 6GB to run currently available [{} GB]\n'.format(
            utilities.get_memory_available_bytes()/(1024 ** 3)
        ))
        sys.exit(1)
    try:
        ls_installer = logstash.LogstashInstaller()
        utilities.download_java(stdout=True)
        utilities.extract_java(stdout=True)
        utilities.setup_java()
        utilities.create_dynamite_user('password')
        ls_installer.download_logstash(stdout=True)
        ls_installer.extract_logstash(stdout=True)
        ls_installer.setup_logstash(stdout=True)
    except Exception:
        sys.stderr.write('[-] A fatal error occurred while attempting to install LogStash: ')
        traceback.print_exc(file=sys.stderr)
        sys.exit(1)
    sys.stdout.write('[+] *** LogStash + ElastiFlow (w/ Zeek Support) installed successfully. ***\n\n')
    sys.stdout.write('[+] Next, Start your collector: \'dynamite.py start logstash\'.\n')
    sys.stdout.flush()
    time.sleep(1)
    sys.stdout.write('[+] YOU MUST LOGOUT (or exit this shell) TO COMPLETE INSTALLATION')
    sys.stdout.flush()

def install_logstash():
    if not utilities.is_root():
        sys.stderr.write('[-] This script must be run as root.\n')
        sys.exit(1)
    if utilities.get_memory_available_bytes() < 6 * (1000 ** 3):
        sys.stderr.write('[-] Dynamite Logstash requires at-least 6GB to run currently available [{} GB]\n'.format(
            utilities.get_memory_available_bytes()/(1024 ** 3)
        ))
        sys.exit(1)
    try:
        ls_installer = logstash.LogstashInstaller()
        utilities.download_java(stdout=True)
        utilities.extract_java(stdout=True)
        utilities.setup_java()
        utilities.create_dynamite_user('password')
        ls_installer.download_logstash(stdout=True)
        ls_installer.extract_logstash(stdout=True)
        ls_installer.setup_logstash(stdout=True)
    except Exception:
        sys.stderr.write('[-] A fatal error occurred while attempting to install LogStash: ')
        traceback.print_exc(file=sys.stderr)
        sys.exit(1)
    sys.stdout.write('[+] *** LogStash + ElastiFlow (w/ Zeek Support) installed successfully. ***\n\n')
    sys.stdout.write('[+] Next, Start your collector: \'dynamite.py start logstash\'.\n')
    sys.stdout.flush()
    time.sleep(1)
    sys.stdout.write('[+] YOU MUST LOGOUT (or exit this shell) TO COMPLETE INSTALLATION')
    sys.stdout.flush()

def install_logstash():
    if not utilities.is_root():
        sys.stderr.write('[-] This script must be run as root.\n')
        sys.exit(1)
    if utilities.get_memory_available_bytes() < 6 * (1000 ** 3):
        sys.stderr.write('[-] Dynamite Logstash requires at-least 6GB to run currently available [{} GB]\n'.format(
            utilities.get_memory_available_bytes()/(1024 ** 3)
        ))
        sys.exit(1)
    try:
        ls_installer = logstash.LogstashInstaller()
        utilities.download_java(stdout=True)
        utilities.extract_java(stdout=True)
        utilities.setup_java()
        utilities.create_dynamite_user('password')
        ls_installer.download_logstash(stdout=True)
        ls_installer.extract_logstash(stdout=True)
        ls_installer.setup_logstash(stdout=True)
    except Exception:
        sys.stderr.write('[-] A fatal error occurred while attempting to install LogStash: ')
        traceback.print_exc(file=sys.stderr)
        sys.exit(1)
    sys.stdout.write('[+] *** LogStash + ElastiFlow (w/ Zeek Support) installed successfully. ***\n\n')
    sys.stdout.write('[+] Next, Start your collector: \'dynamite.py start logstash\'.\n')
    sys.stdout.flush()
    time.sleep(1)
    sys.stdout.write('[+] YOU MUST LOGOUT (or exit this shell) TO COMPLETE INSTALLATION')
    sys.stdout.flush()

def install_elasticsearch():
    if not utilities.is_root():
        sys.stderr.write('[-] This script must be run as root.\n')
        sys.exit(1)

    if utilities.get_memory_available_bytes() < 6 * (1000 ** 3):
        sys.stderr.write('[-] Dynamite ElasticSearch requires at-least 6GB to run currently available [{} GB]\n'.format(
            utilities.get_memory_available_bytes()/(1024 ** 3)
        ))
        sys.exit(1)
    try:
        es_installer = elasticsearch.ElasticInstaller()
        utilities.download_java(stdout=True)
        utilities.extract_java(stdout=True)
        utilities.setup_java()
        utilities.create_dynamite_user('password')
        es_installer.download_elasticsearch(stdout=True)
        es_installer.extract_elasticsearch(stdout=True)

def install_logstash():
    if not utilities.is_root():
        sys.stderr.write('[-] This script must be run as root.\n')
        sys.exit(1)
    if utilities.get_memory_available_bytes() < 6 * (1000 ** 3):
        sys.stderr.write('[-] Dynamite Logstash requires at-least 6GB to run currently available [{} GB]\n'.format(
            utilities.get_memory_available_bytes()/(1024 ** 3)
        ))
        sys.exit(1)
    try:
        ls_installer = logstash.LogstashInstaller()
        utilities.download_java(stdout=True)
        utilities.extract_java(stdout=True)
        utilities.setup_java()
        utilities.create_dynamite_user('password')
        ls_installer.download_logstash(stdout=True)
        ls_installer.extract_logstash(stdout=True)
        ls_installer.setup_logstash(stdout=True)
    except Exception:
        sys.stderr.write('[-] A fatal error occurred while attempting to install LogStash: ')
        traceback.print_exc(file=sys.stderr)
        sys.exit(1)
    sys.stdout.write('[+] *** LogStash + ElastiFlow (w/ Zeek Support) installed successfully. ***\n\n')
    sys.stdout.write('[+] Next, Start your collector: \'dynamite.py start logstash\'.\n')
    sys.stdout.flush()
    time.sleep(1)
    sys.stdout.write('[+] YOU MUST LOGOUT (or exit this shell) TO COMPLETE INSTALLATION')
    sys.stdout.flush()

def install_elasticsearch():
    if not utilities.is_root():
        sys.stderr.write('[-] This script must be run as root.\n')
        sys.exit(1)

    if utilities.get_memory_available_bytes() < 6 * (1000 ** 3):
        sys.stderr.write('[-] Dynamite ElasticSearch requires at-least 6GB to run currently available [{} GB]\n'.format(
            utilities.get_memory_available_bytes()/(1024 ** 3)
        ))
        sys.exit(1)
    try:
        es_installer = elasticsearch.ElasticInstaller()
        utilities.download_java(stdout=True)
        utilities.extract_java(stdout=True)
        utilities.setup_java()
        utilities.create_dynamite_user('password')
        es_installer.download_elasticsearch(stdout=True)
        es_installer.extract_elasticsearch(stdout=True)
        es_installer.setup_elasticsearch(stdout=True)
    except Exception:
        sys.stderr.write('[-] A fatal error occurred while attempting to install ElasticSearch: ')
        traceback.print_exc(file=sys.stderr)
        sys.exit(1)
    sys.stdout.write('[+] *** ElasticSearch installed successfully. ***\n\n')
    sys.stdout.write('[+] Next, Start your cluster: \'dynamite.py start elasticsearch\'.\n')
    sys.stdout.flush()
    time.sleep(1)
    sys.stdout.write('[+] YOU MUST LOGOUT (or exit this shell) TO COMPLETE INSTALLATION')
    sys.stdout.flush()
    sys.exit(0)

def install_logstash():
    if not utilities.is_root():
        sys.stderr.write('[-] This script must be run as root.\n')
        sys.exit(1)
    if utilities.get_memory_available_bytes() < 6 * (1000 ** 3):
        sys.stderr.write('[-] Dynamite Logstash requires at-least 6GB to run currently available [{} GB]\n'.format(
            utilities.get_memory_available_bytes()/(1024 ** 3)
        ))
        sys.exit(1)
    try:
        ls_installer = logstash.LogstashInstaller()
        utilities.download_java(stdout=True)
        utilities.extract_java(stdout=True)
        utilities.setup_java()
        utilities.create_dynamite_user('password')
        ls_installer.download_logstash(stdout=True)
        ls_installer.extract_logstash(stdout=True)
        ls_installer.setup_logstash(stdout=True)

ls_installer.setup_logstash(stdout=True)
    except Exception:
        sys.stderr.write('[-] A fatal error occurred while attempting to install LogStash: ')
        traceback.print_exc(file=sys.stderr)
        sys.exit(1)
    sys.stdout.write('[+] *** LogStash + ElastiFlow (w/ Zeek Support) installed successfully. ***\n\n')
    sys.stdout.write('[+] Next, Start your collector: \'dynamite.py start logstash\'.\n')
    sys.stdout.flush()
    time.sleep(1)
    sys.stdout.write('[+] YOU MUST LOGOUT (or exit this shell) TO COMPLETE INSTALLATION')
    sys.stdout.flush()


if __name__ == '__main__':
    args = _parse_cmdline()
    utilities.source_environment_file()
    if args.command == 'install':
        if args.component == 'elasticsearch':
            install_elasticsearch()
        elif args.component == 'logstash':
            install_logstash()
        else:
            sys.stderr.write('[-] Unrecognized component - {}\n'.format(args.component))
            sys.exit(1)
    elif args.command == 'start':
        if args.component == 'elasticsearch':
            sys.stdout.write('[+] Starting ElasticSearch.\n')
            started = elasticsearch.ElasticProcess().start(stdout=True)
            if started:
                sys.stdout.write('[+] ElasticSearch started successfully. Check its status at any time with: '
                                 '\'dynamite.py status elasticsearch\'.\n')
            else:

def install_logstash():
    if not utilities.is_root():
        sys.stderr.write('[-] This script must be run as root.\n')
        sys.exit(1)
    if utilities.get_memory_available_bytes() < 6 * (1000 ** 3):
        sys.stderr.write('[-] Dynamite Logstash requires at-least 6GB to run currently available [{} GB]\n'.format(
            utilities.get_memory_available_bytes()/(1024 ** 3)
        ))
        sys.exit(1)
    try:
        ls_installer = logstash.LogstashInstaller()
        utilities.download_java(stdout=True)
        utilities.extract_java(stdout=True)
        utilities.setup_java()
        utilities.create_dynamite_user('password')
        ls_installer.download_logstash(stdout=True)
        ls_installer.extract_logstash(stdout=True)
        ls_installer.setup_logstash(stdout=True)
    except Exception:
        sys.stderr.write('[-] A fatal error occurred while attempting to install LogStash: ')
        traceback.print_exc(file=sys.stderr)