Source code for saltext.boto3.states.boto3_rds

"""
Manage RDSs using boto3.
========================

    Renamed from ``boto_rds`` to ``boto3_rds`` and updated to call the
    refactored ``boto3_rds`` execution module.

Create and destroy RDS instances. Be aware that this interacts with Amazon's
services, and so may incur charges.

:depends:
  - boto3 >= 1.28.0
  - botocore >= 1.31.0

This module uses ``boto3``, which can be installed via package, or pip.

This module accepts explicit rds credentials but can also utilize
IAM roles assigned to the instance through Instance Profiles. Dynamic
credentials are then automatically obtained from AWS API and no further
configuration is necessary. More information available `here
<http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html>`_.

If IAM roles are not used you need to specify them either in a pillar file or
in the minion's config file:

.. code-block:: yaml

    rds.keyid: GKTADJGHEIQSXMKKRBJ08H
    rds.key: askdjghsdfjkghWupUjasdflkdfklgjsdfjajkghs

It's also possible to specify ``key``, ``keyid`` and ``region`` via a profile,
either passed in as a dict, or as a string to pull from pillars or minion
config:

.. code-block:: yaml

    myprofile:
        keyid: GKTADJGHEIQSXMKKRBJ08H
        key: askdjghsdfjkghWupUjasdflkdfklgjsdfjajkghs
            region: us-east-1

.. code-block:: yaml

    Ensure myrds RDS exists:
      boto3_rds.present:
        - name: myrds
        - allocated_storage: 5
        - storage_type: standard
        - db_instance_class: db.t2.micro
        - engine: MySQL
        - master_username: myuser
        - master_user_password: mypass
        - region: us-east-1
        - keyid: GKTADJGHEIQSXMKKRBJ08H
        - key: askdjghsdfjkghWupUjasdflkdfklgjsdfjajkghs
        - tags:
            key: value

.. code-block:: yaml

    Ensure parameter group exists:
        create-parameter-group:
          boto3_rds.parameter_present:
            - name: myparametergroup
            - db_parameter_group_family: mysql5.6
            - description: "parameter group family"
            - parameters:
              - binlog_cache_size: 32768
              - binlog_checksum: CRC32
            - region: eu-west-1

.. versionadded:: 1.0.0
"""

import json
import logging
import os

import salt.utils.data
from salt.exceptions import SaltInvocationError

log = logging.getLogger(__name__)


[docs] def __virtual__(): """ Only load if boto3_rds module is available. """ if "boto3_rds.exists" in __salt__: return "boto3_rds" return ( False, "The boto3_rds state module could not be loaded: boto3_rds execution module is unavailable.", )
[docs] def present( name, allocated_storage, db_instance_class, engine, master_username, master_user_password, db_name=None, storage_type=None, db_security_groups=None, vpc_security_group_ids=None, vpc_security_groups=None, availability_zone=None, db_subnet_group_name=None, preferred_maintenance_window=None, db_parameter_group_name=None, db_cluster_identifier=None, tde_credential_arn=None, tde_credential_password=None, storage_encrypted=None, kms_keyid=None, backup_retention_period=None, preferred_backup_window=None, port=None, multi_az=None, engine_version=None, auto_minor_version_upgrade=None, license_model=None, iops=None, option_group_name=None, character_set_name=None, publicly_accessible=None, wait_status=None, tags=None, copy_tags_to_snapshot=None, region=None, domain=None, key=None, keyid=None, monitoring_interval=None, monitoring_role_arn=None, domain_iam_role_name=None, promotion_tier=None, profile=None, ): # pylint: disable=too-many-arguments """ Ensure RDS instance exists. name (str): Name of the RDS state definition. allocated_storage (int): The amount of storage (in gigabytes) to be initially allocated for the database instance. db_instance_class (str): The compute and memory capacity of the Amazon RDS DB instance. engine (str): The name of the database engine to be used for this instance. Supported engine types are: MySQL, mariadb, oracle-se1, oracle-se, oracle-ee, sqlserver-ee, sqlserver-se, sqlserver-ex, sqlserver-web, postgres and aurora. For more information, please see the ``engine`` argument in the Boto3 RDS `create_db_instance`_ documentation. master_username (str): The name of master user for the client DB instance. master_user_password (str): The password for the master database user. Can be any printable ASCII character except "/", '"', or "@". db_name (str, optional): The meaning of this parameter differs according to the database engine you use. See the Boto3 RDS documentation to determine the appropriate value for your configuration. https://docs.aws.amazon.com/boto3/latest/reference/services/rds/client/create_db_instance.html storage_type (str, optional): Specifies the storage type to be associated with the DB instance. Options are standard, gp2 and io1. If you specify io1, you must also include a value for the Iops parameter. db_security_groups (list, optional): A list of DB security groups to associate with this DB instance. vpc_security_group_ids (list, optional): A list of EC2 VPC security group IDs to associate with this DB instance. vpc_security_groups (list, optional): A list of EC2 VPC security groups (IDs or Name tags) to associate with this DB instance. availability_zone (str, optional): The EC2 Availability Zone that the database instance will be created in. db_subnet_group_name (str, optional): A DB subnet group to associate with this DB instance. preferred_maintenance_window (str, optional): The weekly time range (in UTC) during which system maintenance can occur. db_parameter_group_name (str, optional): A DB parameter group to associate with this DB instance. db_cluster_identifier (str, optional): If the DB instance is a member of a DB cluster, contains the name of the DB cluster that the DB instance is a member of. tde_credential_arn (str, optional): The ARN from the Key Store with which the instance is associated for TDE encryption. tde_credential_password (str, optional): The password to use for TDE encryption if an encryption key is not used. storage_encrypted (bool, optional): Specifies whether the DB instance is encrypted. kms_keyid (str, optional): If storage_encrypted is true, the KMS key identifier for the encrypted DB instance. backup_retention_period (int, optional): The number of days for which automated backups are retained. preferred_backup_window (str, optional): The daily time range during which automated backups are created if automated backups are enabled. port (int, optional): The port number on which the database accepts connections. multi_az (bool, optional): Specifies if the DB instance is a Multi-AZ deployment. You cannot set the AvailabilityZone parameter if the MultiAZ parameter is set to true. engine_version (str, optional): The version number of the database engine to use. auto_minor_version_upgrade (bool, optional): Indicates that minor engine upgrades will be applied automatically to the DB instance during the maintenance window. license_model (str, optional): License model information for this DB instance. iops (int, optional): The amount of Provisioned IOPS (input/output operations per second) to be initially allocated for the DB instance. option_group_name (str, optional): Indicates that the DB instance should be associated with the specified option group. character_set_name (str, optional): For supported engines, indicates that the DB instance should be associated with the specified CharacterSet. publicly_accessible (bool, optional): Specifies the accessibility options for the DB instance. A value of true specifies an Internet-facing instance with a publicly resolvable DNS name, which resolves to a public IP address. A value of false specifies an internal instance with a DNS name that resolves to a private IP address. wait_status (str, optional): Wait for the RDS instance to reach a desired status before finishing the state. Available states: available, modifying, backing-up tags (dict, optional): A dict of tags. copy_tags_to_snapshot (bool, optional): Specifies whether tags are copied from the DB instance to snapshots of the DB instance. region (str, optional): Region to connect to. domain (str, optional): The identifier of the Active Directory Domain. key (str, optional): AWS secret key to be used. keyid (str, optional): AWS access key to be used. monitoring_interval (int, optional): The interval, in seconds, between points when Enhanced Monitoring metrics are collected for the DB instance. monitoring_role_arn (str, optional): The ARN for the IAM role that permits RDS to send Enhanced Monitoring metrics to CloudWatch Logs. domain_iam_role_name (str, optional): Specify the name of the IAM role to be used when making API calls to the Directory Service. promotion_tier (int, optional): A value that specifies the order in which an Aurora Replica is promoted to the primary instance after a failure of the existing primary instance. For more information, see Fault Tolerance for an Aurora DB Cluster . profile (dict or str, optional): A dict with region, key and keyid, or a pillar key (string) that contains a dict with region, key and keyid. .. _create_db_instance: https://docs.aws.amazon.com/boto3/latest/reference/services/rds/client/create_db_instance.html Example: .. code-block:: yaml ensure-present: boto3_rds.present: - name: example - allocated_storage: 20 - engine: mysql - master_username: admin - master_user_password: password - db_name: exampledb """ ret = {"name": name, "result": True, "comment": "", "changes": {}} r = __salt__["boto3_rds.exists"](name, tags, region, key, keyid, profile) if not r.get("exists"): if __opts__["test"]: ret["comment"] = f"RDS instance {name} would be created." ret["result"] = None return ret r = __salt__["boto3_rds.create"]( name, allocated_storage, db_instance_class, engine, master_username, master_user_password, db_name, db_security_groups, vpc_security_group_ids, vpc_security_groups, availability_zone, db_subnet_group_name, preferred_maintenance_window, db_parameter_group_name, backup_retention_period, preferred_backup_window, port, multi_az, engine_version, auto_minor_version_upgrade, license_model, iops, option_group_name, character_set_name, publicly_accessible, wait_status, tags, db_cluster_identifier, storage_type, tde_credential_arn, tde_credential_password, storage_encrypted, kms_keyid, domain, copy_tags_to_snapshot, monitoring_interval, monitoring_role_arn, domain_iam_role_name, region, promotion_tier, key, keyid, profile, ) if not r.get("created"): ret["result"] = False ret["comment"] = "Failed to create RDS instance {}.".format(r["error"]["message"]) return ret ret["changes"]["old"] = {"instance": None} ret["changes"]["new"] = { "instance": __salt__["boto3_rds.describe_db_instances"]( name=name, jmespath="DBInstances[0]", region=region, key=key, keyid=keyid, profile=profile, ) } ret["comment"] = f"RDS instance {name} created." else: ret["comment"] = f"RDS instance {name} exists." return ret
[docs] def replica_present( name, source, db_instance_class=None, availability_zone=None, port=None, auto_minor_version_upgrade=None, iops=None, option_group_name=None, publicly_accessible=None, tags=None, region=None, key=None, keyid=None, profile=None, db_parameter_group_name=None, ): """ Ensure RDS replica exists. name (str): The name of the RDS read replica. source (str): The name of the source DB instance from which to create the read replica. db_instance_class (str, optional): The compute and memory capacity of the read replica. availability_zone (str, optional): The Availability Zone where the read replica will be created. port (int, optional): The port number on which the database accepts connections. auto_minor_version_upgrade (bool, optional): Indicates whether minor engine upgrades are applied automatically to the read replica. iops (int, optional): The amount of Provisioned IOPS (input/output operations per second) to be initially allocated for the read replica. option_group_name (str, optional): The option group to associate with the read replica. publicly_accessible (bool, optional): Specifies whether the read replica is publicly accessible. tags (dict, optional): A dictionary of tags to assign to the read replica. region (str, optional): The AWS region where the read replica will be created. key (str, optional): The AWS access key to use. keyid (str, optional): The AWS secret key to use. profile (dict or str, optional): The AWS profile to use. db_parameter_group_name (str, optional): The name of the DB parameter group to associate with the read replica. Example: .. code-block:: yaml Ensure myrds replica RDS exists: boto3_rds.create_replica: - name: myreplica - source: mydb """ ret = {"name": name, "result": True, "comment": "", "changes": {}} replica_exists = __salt__["boto3_rds.exists"](name, tags, region, key, keyid, profile) if not replica_exists.get("exists"): if __opts__["test"]: ret["comment"] = f"RDS read replica {name} is set to be created " ret["result"] = None return ret created = __salt__["boto3_rds.create_read_replica"]( name, source, db_instance_class, availability_zone, port, auto_minor_version_upgrade, iops, option_group_name, publicly_accessible, tags, region, key, keyid, profile, ) if created: ret["comment"] = f"RDS replica {name} created." ret["changes"]["old"] = {"instance": None} ret["changes"]["new"] = { "instance": __salt__["boto3_rds.describe_db_instances"]( name=name, jmespath="DBInstances[0]", region=region, key=key, keyid=keyid, profile=profile, ) } else: ret["result"] = False ret["comment"] = f"Failed to create RDS replica {name}." else: jmespath = "DBInstances[0].DBParameterGroups[0].DBParameterGroupName" pmg_name = __salt__["boto3_rds.describe_db_instances"]( name=name, jmespath=jmespath, region=region, key=key, keyid=keyid, profile=profile, ) pmg_name = pmg_name[0] if pmg_name else None if pmg_name != db_parameter_group_name: modified = __salt__["boto3_rds.modify_db_instance"]( name=name, db_parameter_group_name=db_parameter_group_name, region=region, key=key, keyid=keyid, profile=profile, ) if not modified: ret["result"] = False ret["comment"] = f"Failed to update parameter group of {name} RDS instance." ret["changes"]["old"] = pmg_name ret["changes"]["new"] = db_parameter_group_name ret["result"] = True ret["comment"] = f"RDS replica {name} exists." return ret
[docs] def subnet_group_present( name, description, subnet_ids=None, subnet_names=None, tags=None, region=None, key=None, keyid=None, profile=None, ): """ Ensure DB subnet group exists. name (str): The name for the DB subnet group. This value is stored as a lowercase string. subnet_ids (list, optional): A list of the EC2 Subnet IDs for the DB subnet group. Either subnet_ids or subnet_names must be provided. subnet_names (list, optional): A list of The EC2 Subnet names for the DB subnet group. Either subnet_ids or subnet_names must be provided. description (str): Subnet group description. tags (dict, optional): A dict of tags. region (str, optional): Region to connect to. key (str, optional): Secret key to be used. keyid (str, optional): Access key to be used. profile (dict or str, optional): A dict with region, key and keyid, or a pillar key (string) that contains a dict with region, key and keyid. Example: .. code-block:: yaml ensure-subnet-group-present: boto3_rds.subnet_group_present: - name: example - description: "Example subnet group" - subnet_ids: - subnet-12345678 - subnet-87654321 - tags: Environment: "dev" """ if not salt.utils.data.exactly_one((subnet_ids, subnet_names)): raise SaltInvocationError( "One (but not both) of subnet_ids or subnet_names must be provided." ) ret = {"name": name, "result": True, "comment": "", "changes": {}} if not subnet_ids: subnet_ids = [] if subnet_names: for i in subnet_names: r = __salt__["boto3_vpc.get_resource_id"]( "subnet", name=i, region=region, key=key, keyid=keyid, profile=profile ) if "error" in r: ret["comment"] = "Error looking up subnet ids: {}".format(r["error"]["message"]) ret["result"] = False return ret if r["id"] is None: ret["comment"] = f"Subnet {i} does not exist." ret["result"] = False return ret subnet_ids.append(r["id"]) exists = __salt__["boto3_rds.subnet_group_exists"]( name=name, tags=tags, region=region, key=key, keyid=keyid, profile=profile ) if not exists.get("exists"): if __opts__["test"]: ret["comment"] = f"Subnet group {name} is set to be created." ret["result"] = None return ret created = __salt__["boto3_rds.create_subnet_group"]( name=name, description=description, subnet_ids=subnet_ids, tags=tags, region=region, key=key, keyid=keyid, profile=profile, ) if not created: ret["result"] = False ret["comment"] = f"Failed to create {name} subnet group." return ret ret["changes"]["old"] = None ret["changes"]["new"] = name ret["comment"] = f"Subnet {name} created." return ret else: ret["comment"] = f"Subnet {name} present." return ret
[docs] def absent( name, skip_final_snapshot=None, final_db_snapshot_identifier=None, tags=None, wait_for_deletion=True, timeout=180, region=None, key=None, keyid=None, profile=None, ): """ Ensure RDS instance is absent. name (str): Name of the RDS instance. skip_final_snapshot (bool, optional): Whether a final db snapshot is created before the instance is deleted. If True, no snapshot is created. If False, a snapshot is created before deleting the instance. final_db_snapshot_identifier (str, optional): If a final snapshot is requested, this is the identifier used for that snapshot. tags (dict, optional): A dict of tags. wait_for_deletion (bool, optional): Wait for the RDS instance to be deleted completely before finishing the state. timeout (int, optional): The amount of time that can pass before raising an Exception. region (str, optional): Region to connect to. key (str, optional): Secret key to be used. keyid (str, optional): Access key to be used. profile (dict or str, optional): A dict with region, key and keyid, or a pillar key (string) that contains a dict with region, key and keyid. Example: .. code-block:: yaml ensure-absent: boto3_rds.absent: - name: example """ ret = {"name": name, "result": True, "comment": "", "changes": {}} current = __salt__["boto3_rds.describe_db_instances"]( name=name, region=region, key=key, keyid=keyid, profile=profile ) if not current: ret["result"] = True ret["comment"] = f"{name} RDS already absent." return ret if __opts__["test"]: ret["comment"] = f"RDS {name} would be removed." ret["result"] = None return ret deleted = __salt__["boto3_rds.delete"]( name, skip_final_snapshot, final_db_snapshot_identifier, region, key, keyid, profile, tags, wait_for_deletion, timeout, ) if not deleted: ret["result"] = False ret["comment"] = f"Failed to delete {name} RDS." return ret ret["changes"]["old"] = {"instance": current[0]} ret["changes"]["new"] = {"instance": None} ret["comment"] = f"RDS {name} deleted." return ret
[docs] def subnet_group_absent(name, tags=None, region=None, key=None, keyid=None, profile=None): """ Ensure an RDS DB subnet group is absent. name (str): The name of the RDS DB subnet group to ensure is absent. tags (dict, optional): Tags associated with the RDS DB subnet group. region (str, optional): Region to connect to. key (str, optional): Secret key to be used. keyid (str, optional): Access key to be used. profile (dict or str, optional): A dict with region, key and keyid, or a pillar key (string) that contains a dict with region, key and keyid. Example: .. code-block:: yaml ensure-subnet-group-absent: boto3_rds.subnet_group_absent: - name: example """ ret = {"name": name, "result": True, "comment": "", "changes": {}} exists = __salt__["boto3_rds.subnet_group_exists"]( name=name, tags=tags, region=region, key=key, keyid=keyid, profile=profile ) if not exists: ret["result"] = True ret["comment"] = f"{name} RDS subnet group does not exist." return ret if __opts__["test"]: ret["comment"] = f"RDS subnet group {name} is set to be removed." ret["result"] = None return ret deleted = __salt__["boto3_rds.delete_subnet_group"](name, region, key, keyid, profile) if not deleted: ret["result"] = False ret["comment"] = f"Failed to delete {name} RDS subnet group." return ret ret["changes"]["old"] = name ret["changes"]["new"] = None ret["comment"] = f"RDS subnet group {name} deleted." return ret
[docs] def endpoint_secret_present( name, db_instance_name, host_key="host", region=None, key=None, keyid=None, profile=None, ): """ Ensure a Secrets Manager JSON secret records the instance's current endpoint. The endpoint is only known after the instance is available, so this is normally declared after :py:func:`present` with a ``require`` on it. name (str): The Secrets Manager secret ID holding the JSON credentials document. db_instance_name (str): Name of the RDS instance whose endpoint should be published. host_key (str, optional): Key within the JSON document to write the endpoint to. Defaults to ``host``. region (str, optional): Region to connect to. key (str, optional): AWS secret key to be used. keyid (str, optional): AWS access key to be used. profile (dict or str, optional): A dict with region, key and keyid, or a pillar key (string) that contains a dict with region, key and keyid. Example: .. code-block:: yaml publish-endpoint: boto3_rds.endpoint_secret_present: - name: myapp/dev/rds - db_instance_name: myrds - region: us-east-1 """ ret = {"name": name, "result": True, "comment": "", "changes": {}} if "boto3_secretsmanager.get" not in __salt__: ret["result"] = False ret["comment"] = "The boto3_secretsmanager execution module is unavailable." return ret endpoint = __salt__["boto3_rds.get_endpoint"]( db_instance_name, region=region, key=key, keyid=keyid, profile=profile ) if not endpoint or isinstance(endpoint, dict): ret["result"] = False ret["comment"] = f"RDS endpoint for {db_instance_name} is not available." return ret current = __salt__["boto3_secretsmanager.get"]( name, region=region, key=key, keyid=keyid, profile=profile ) if current.get("error"): ret["result"] = False ret["comment"] = current["error"] return ret if not current.get("exists"): ret["result"] = False ret["comment"] = f"Secrets Manager secret {name} does not exist." return ret try: secret_data = json.loads(current.get("secret_string") or "{}") except (TypeError, ValueError) as exc: ret["result"] = False ret["comment"] = f"Secret {name} is not valid JSON: {exc}" return ret if secret_data.get(host_key) == endpoint: ret["comment"] = f"Secret {name} already records the current endpoint." return ret if __opts__["test"]: ret["result"] = None ret["comment"] = f"Secret {name} {host_key} would be set to {endpoint}." return ret old_host = secret_data.get(host_key) secret_data[host_key] = endpoint updated = __salt__["boto3_secretsmanager.put"]( name, json.dumps(secret_data, separators=(",", ":"), sort_keys=True), region=region, key=key, keyid=keyid, profile=profile, ) if not updated.get("updated"): ret["result"] = False ret["comment"] = updated.get("error", f"Failed to update secret {name}.") return ret ret["changes"] = {host_key: {"old": old_host, "new": endpoint}} ret["comment"] = f"Secret {name} endpoint updated." return ret
[docs] def parameter_present( name, db_parameter_group_family, description, parameters=None, apply_method="pending-reboot", tags=None, region=None, key=None, keyid=None, profile=None, ): """ Ensure DB parameter group exists and update parameters. name (str): The name for the parameter group. db_parameter_group_family (str): The DB parameter group family name. A DB parameter group can be associated with one and only one DB parameter group family, and can be applied only to a DB instance running a database engine and engine version compatible with that DB parameter group family. description (str): Parameter group description. parameters (dict, optional): The DB parameters that need to be changed of type dictionary. apply_method (str, optional): The `apply-immediate` method can be used only for dynamic parameters; the `pending-reboot` method can be used with MySQL and Oracle DB instances for either dynamic or static parameters. For Microsoft SQL Server DB instances, the `pending-reboot` method can be used only for static parameters. tags (dict, optional): A dict of tags. region (str, optional): Region to connect to. key (str, optional): Secret key to be used. keyid (str, optional): Access key to be used. profile (dict or str, optional): A dict with region, key and keyid, or a pillar key (string) that contains a dict with region, key and keyid. Example: .. code-block:: yaml ensure-parameter-present: boto3_rds.parameter_present: - name: example - db_parameter_group_family: mysql5.7 - description: "Example parameter group" parameters: max_connections: 100 - apply_method: pending-reboot - tags: Environment: "dev" """ ret = {"name": name, "result": True, "comment": "", "changes": {}} res = __salt__["boto3_rds.parameter_group_exists"]( name=name, tags=tags, region=region, key=key, keyid=keyid, profile=profile ) if not res.get("exists"): if __opts__["test"]: ret["comment"] = f"Parameter group {name} is set to be created." ret["result"] = None return ret created = __salt__["boto3_rds.create_parameter_group"]( name=name, db_parameter_group_family=db_parameter_group_family, description=description, tags=tags, region=region, key=key, keyid=keyid, profile=profile, ) if not created: ret["result"] = False ret["comment"] = f"Failed to create {name} parameter group." return ret ret["changes"]["New Parameter Group"] = name ret["comment"] = f"Parameter group {name} created." else: ret["comment"] = f"Parameter group {name} present." if parameters is not None: params = {} changed = {} for items in parameters: for k, value in items.items(): if isinstance(value, bool): params[k] = "on" if value else "off" else: params[k] = str(value) log.debug("Parameters from user are : %s.", params) options = __salt__["boto3_rds.describe_parameters"]( name=name, region=region, key=key, keyid=keyid, profile=profile ) if not options.get("result"): ret["result"] = False ret["comment"] = os.linesep.join( [ret["comment"], f"Faled to get parameters for group {name}."] ) return ret for parameter in options["parameters"].values(): if parameter["ParameterName"] in params and params.get( parameter["ParameterName"] ) != str(parameter["ParameterValue"]): log.debug( "Values that are being compared for %s are %s:%s.", parameter["ParameterName"], params.get(parameter["ParameterName"]), parameter["ParameterValue"], ) changed[parameter["ParameterName"]] = params.get(parameter["ParameterName"]) if len(changed) > 0: if __opts__["test"]: ret["comment"] = os.linesep.join( [ ret["comment"], f"Parameters {changed} for group {name} are set to be changed.", ] ) ret["result"] = None return ret update = __salt__["boto3_rds.update_parameter_group"]( name, parameters=changed, apply_method=apply_method, tags=tags, region=region, key=key, keyid=keyid, profile=profile, ) if "error" in update: ret["result"] = False ret["comment"] = os.linesep.join( [ ret["comment"], f"Failed to change parameters {changed} for group {name}:", update["error"]["message"], ] ) return ret ret["changes"]["Parameters"] = changed ret["comment"] = os.linesep.join( [ ret["comment"], f"Parameters {changed} for group {name} are changed.", ] ) else: ret["comment"] = os.linesep.join( [ ret["comment"], f"Parameters {params} for group {name} are present.", ] ) return ret