def run(dry_run,
        print_to_file=None,
        enable_deletion=False,
        thread_pool_size=10,
        defer=None):
    settings = queries.get_app_interface_settings()
    clusters = [
        c for c in queries.get_clusters() if c.get("peering") is not None
    ]
    with_ocm = any(c.get("ocm") for c in clusters)
    if with_ocm:
        ocm_map = OCMMap(clusters=clusters,
                         integration=QONTRACT_INTEGRATION,
                         settings=settings)
    else:
        # this is a case for an OCP cluster which is not provisioned
        # through OCM. it is expected that an 'assume_role' is provided
        # on the tgw defition in the cluster file.
        ocm_map = {}

    accounts = queries.get_aws_accounts()
    awsapi = AWSApi(1, accounts, settings=settings, init_users=False)

    # Fetch desired state for cluster-to-vpc(account) VPCs
    desired_state, err = build_desired_state_tgw_attachments(
        clusters, ocm_map, awsapi)
    if err:
        sys.exit(1)

    # check there are no repeated vpc connection names
    connection_names = [c["connection_name"] for c in desired_state]
    if len(set(connection_names)) != len(connection_names):
        logging.error("duplicate vpc connection names found")
        sys.exit(1)

    participating_accounts = [
        item["requester"]["account"] for item in desired_state
    ]
    participating_accounts += [
        item["accepter"]["account"] for item in desired_state
    ]
    participating_account_names = [a["name"] for a in participating_accounts]
    accounts = [
        a for a in queries.get_aws_accounts()
        if a["name"] in participating_account_names
    ]

    ts = Terrascript(QONTRACT_INTEGRATION,
                     "",
                     thread_pool_size,
                     accounts,
                     settings=settings)
    ts.populate_additional_providers(participating_accounts)
    ts.populate_tgw_attachments(desired_state)
    working_dirs = ts.dump(print_to_file=print_to_file)
    aws_api = AWSApi(1, accounts, settings=settings, init_users=False)

    if print_to_file:
        sys.exit()

    tf = Terraform(
        QONTRACT_INTEGRATION,
        QONTRACT_INTEGRATION_VERSION,
        "",
        accounts,
        working_dirs,
        thread_pool_size,
        aws_api,
    )

    if tf is None:
        sys.exit(1)

    defer(tf.cleanup)

    disabled_deletions_detected, err = tf.plan(enable_deletion)
    if err:
        sys.exit(1)
    if disabled_deletions_detected:
        sys.exit(1)

    if dry_run:
        return

    err = tf.apply()
    if err:
        sys.exit(1)
def run(dry_run,
        print_only=False,
        enable_deletion=False,
        thread_pool_size=10,
        defer=None):
    settings = queries.get_app_interface_settings()
    clusters = [
        c for c in queries.get_clusters() if c.get('peering') is not None
    ]
    ocm_map = OCMMap(clusters=clusters,
                     integration=QONTRACT_INTEGRATION,
                     settings=settings)

    # Fetch desired state for cluster-to-vpc(account) VPCs
    desired_state, err = \
        build_desired_state_tgw_attachments(clusters, ocm_map, settings)
    if err:
        sys.exit(1)

    # check there are no repeated vpc connection names
    connection_names = [c['connection_name'] for c in desired_state]
    if len(set(connection_names)) != len(connection_names):
        logging.error("duplicate vpc connection names found")
        sys.exit(1)

    participating_accounts = \
        [item['requester']['account'] for item in desired_state]
    participating_accounts += \
        [item['accepter']['account'] for item in desired_state]
    participating_account_names = \
        [a['name'] for a in participating_accounts]
    accounts = [
        a for a in queries.get_aws_accounts()
        if a['name'] in participating_account_names
    ]

    ts = Terrascript(QONTRACT_INTEGRATION,
                     "",
                     thread_pool_size,
                     accounts,
                     settings=settings)
    ts.populate_additional_providers(participating_accounts)
    ts.populate_tgw_attachments(desired_state)
    working_dirs = ts.dump(print_only=print_only)

    if print_only:
        sys.exit()

    tf = Terraform(QONTRACT_INTEGRATION, QONTRACT_INTEGRATION_VERSION, "",
                   accounts, working_dirs, thread_pool_size)

    if tf is None:
        sys.exit(1)

    defer(lambda: tf.cleanup())

    disabled_deletions_detected, err = tf.plan(enable_deletion)
    if err:
        sys.exit(1)
    if disabled_deletions_detected:
        sys.exit(1)

    if dry_run:
        return

    err = tf.apply()
    if err:
        sys.exit(1)