CfnSafetyRule

class aws_cdk.aws_route53recoverycontrol.CfnSafetyRule(scope, id, *, control_panel_arn, name, rule_config, assertion_rule=None, gating_rule=None, tags=None)

Bases: CfnResource

A CloudFormation AWS::Route53RecoveryControl::SafetyRule.

Creates a safety rule in a control panel in Amazon Route 53 Application Recovery Controller. Safety rules in Amazon Route 53 Application Recovery Controller let you add safeguards around changing routing control states, and enabling and disabling routing controls, to help prevent unwanted outcomes. Note that the name of a safety rule must be unique within a control panel.

There are two types of safety rules in Route 53 ARC: assertion rules and gating rules.

Assertion rule: An assertion rule enforces that, when you change a routing control state, certain criteria are met. For example, the criteria might be that at least one routing control state is On after the transaction completes so that traffic continues to be directed to at least one cell for the application. This prevents a fail-open scenario.

Gating rule: A gating rule lets you configure a gating routing control as an overall on-off switch for a group of routing controls. Or, you can configure more complex gating scenarios, for example, by configuring multiple gating routing controls.

For more information, see Safety rules in the Amazon Route 53 Application Recovery Controller Developer Guide.

CloudformationResource:: AWS::Route53RecoveryControl::SafetyRule
Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-route53recoverycontrol-safetyrule.html
ExampleMetadata:: fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_route53recoverycontrol as route53recoverycontrol

cfn_safety_rule = route53recoverycontrol.CfnSafetyRule(self, "MyCfnSafetyRule",
    control_panel_arn="controlPanelArn",
    name="name",
    rule_config=route53recoverycontrol.CfnSafetyRule.RuleConfigProperty(
        inverted=False,
        threshold=123,
        type="type"
    ),

    # the properties below are optional
    assertion_rule=route53recoverycontrol.CfnSafetyRule.AssertionRuleProperty(
        asserted_controls=["assertedControls"],
        wait_period_ms=123
    ),
    gating_rule=route53recoverycontrol.CfnSafetyRule.GatingRuleProperty(
        gating_controls=["gatingControls"],
        target_controls=["targetControls"],
        wait_period_ms=123
    ),
    tags=[CfnTag(
        key="key",
        value="value"
    )]
)

Create a new AWS::Route53RecoveryControl::SafetyRule.

Parameters:

scope (Construct) –
- scope in which this resource is defined.
id (str) –
- scoped id of the resource.
control_panel_arn (str) – The Amazon Resource Name (ARN) for the control panel.
name (str) – The name of the assertion rule. The name must be unique within a control panel. You can use any non-white space character in the name except the following: & > < ‘ (single quote) ” (double quote) ; (semicolon)
rule_config (Union[IResolvable, RuleConfigProperty, Dict[str, Any]]) – The criteria that you set for specific assertion controls (routing controls) that designate how many control states must be ON as the result of a transaction. For example, if you have three assertion controls, you might specify ATLEAST 2 for your rule configuration. This means that at least two assertion controls must be ON , so that at least two AWS Regions have traffic flowing to them.
assertion_rule (Union[IResolvable, AssertionRuleProperty, Dict[str, Any], None]) – An assertion rule enforces that, when you change a routing control state, that the criteria that you set in the rule configuration is met. Otherwise, the change to the routing control is not accepted. For example, the criteria might be that at least one routing control state is On after the transaction so that traffic continues to flow to at least one cell for the application. This ensures that you avoid a fail-open scenario.
gating_rule (Union[IResolvable, GatingRuleProperty, Dict[str, Any], None]) – A gating rule verifies that a gating routing control or set of gating routing controls, evaluates as true, based on a rule configuration that you specify, which allows a set of routing control state changes to complete. For example, if you specify one gating routing control and you set the Type in the rule configuration to OR , that indicates that you must set the gating routing control to On for the rule to evaluate as true; that is, for the gating control switch to be On. When you do that, then you can update the routing control states for the target routing controls that you specify in the gating rule.
tags (Optional[Sequence[Union[CfnTag, Dict[str, Any]]]]) – The value for a tag.

Methods

add_deletion_override(path)

Syntactic sugar for addOverride(path, undefined).

Parameters:: path (str) – The path of the value to delete.
Return type:: None

add_depends_on(target)

Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

This can be used for resources across stacks (or nested stack) boundaries and the dependency will automatically be transferred to the relevant scope.

Parameters:

target (CfnResource) –

Return type:

None

add_metadata(key, value)

Add a value to the CloudFormation Resource Metadata.

Parameters:

key (str) –
value (Any) –

See:

Return type:

None

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.

add_override(path, value)

Adds an override to the synthesized CloudFormation resource.

To add a property override, either use addPropertyOverride or prefix path with “Properties.” (i.e. Properties.TopicName).

If the override is nested, separate each nested level using a dot (.) in the path parameter. If there is an array as part of the nesting, specify the index in the path.

To include a literal . in the property name, prefix with a \. In most programming languages you will need to write this as "\\." because the \ itself will need to be escaped.

For example:

cfn_resource.add_override("Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes", ["myattribute"])
cfn_resource.add_override("Properties.GlobalSecondaryIndexes.1.ProjectionType", "INCLUDE")

would add the overrides Example:

"Properties": {
   "GlobalSecondaryIndexes": [
     {
       "Projection": {
         "NonKeyAttributes": [ "myattribute" ]
         ...
       }
       ...
     },
     {
       "ProjectionType": "INCLUDE"
       ...
     },
   ]
   ...
}

The value argument to addOverride will not be processed or translated in any way. Pass raw JSON values in here with the correct capitalization for CloudFormation. If you pass CDK classes or structs, they will be rendered with lowercased key names, and CloudFormation will reject the template.

Parameters:

path (str) –
- The path of the property, you can use dot notation to override values in complex types. Any intermdediate keys will be created as needed.
value (Any) –
- The value. Could be primitive or complex.

Return type:

None

add_property_deletion_override(property_path)

Adds an override that deletes the value of a property from the resource definition.

Parameters:: property_path (str) – The path to the property.
Return type:: None

add_property_override(property_path, value)

Adds an override to a resource property.

Syntactic sugar for addOverride("Properties.<...>", value).

Parameters:

property_path (str) – The path of the property.
value (Any) – The value.

Return type:

None

apply_removal_policy(policy=None, *, apply_to_update_replace_policy=None, default=None)

Sets the deletion policy of the resource based on the removal policy specified.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you’ve removed it from the CDK application or because you’ve made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

Parameters:

policy (Optional[RemovalPolicy]) –
apply_to_update_replace_policy (Optional[bool]) – Apply the same deletion policy to the resource’s “UpdateReplacePolicy”. Default: true
default (Optional[RemovalPolicy]) – The default policy to apply in case the removal policy is not defined. Default: - Default value is resource specific. To determine the default value for a resoure, please consult that specific resource’s documentation.

Return type:

None

get_att(attribute_name)

Returns a token for an runtime attribute of this resource.

Ideally, use generated attribute accessors (e.g. resource.arn), but this can be used for future compatibility in case there is no generated attribute.

Parameters:: attribute_name (str) – The name of the attribute.
Return type:: Reference

get_metadata(key)

Retrieve a value value from the CloudFormation Resource Metadata.

Parameters:

key (str) –

See:

Return type:

Any

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.

inspect(inspector)

Examines the CloudFormation resource and discloses attributes.

Parameters:

inspector (TreeInspector) –

tree inspector to collect and process attributes.

Return type:

None

override_logical_id(new_logical_id)

Overrides the auto-generated logical ID with a specific ID.

Parameters:: new_logical_id (str) – The new logical ID to use for this stack element.
Return type:: None

to_string()

Returns a string representation of this construct.

Return type:: str
Returns:: a string representation of this resource

Attributes

CFN_RESOURCE_TYPE_NAME = 'AWS::Route53RecoveryControl::SafetyRule'

assertion_rule

An assertion rule enforces that, when you change a routing control state, that the criteria that you set in the rule configuration is met.

Otherwise, the change to the routing control is not accepted. For example, the criteria might be that at least one routing control state is On after the transaction so that traffic continues to flow to at least one cell for the application. This ensures that you avoid a fail-open scenario.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-route53recoverycontrol-safetyrule.html#cfn-route53recoverycontrol-safetyrule-assertionrule

attr_safety_rule_arn

The Amazon Resource Name (ARN) of the safety rule.

CloudformationAttribute:: SafetyRuleArn

attr_status

The deployment status of the safety rule.

Status can be one of the following: PENDING, DEPLOYED, PENDING_DELETION.

CloudformationAttribute:: Status

cfn_options: Options for this resource, such as condition, update policy etc.

cfn_resource_type: AWS resource type.

control_panel_arn

The Amazon Resource Name (ARN) for the control panel.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-route53recoverycontrol-safetyrule.html#cfn-route53recoverycontrol-safetyrule-controlpanelarn

creation_stack

return:

the stack trace of the point where this Resource was created from, sourced from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most node +internal+ entries filtered.

gating_rule

A gating rule verifies that a gating routing control or set of gating routing controls, evaluates as true, based on a rule configuration that you specify, which allows a set of routing control state changes to complete.

For example, if you specify one gating routing control and you set the Type in the rule configuration to OR , that indicates that you must set the gating routing control to On for the rule to evaluate as true; that is, for the gating control switch to be On. When you do that, then you can update the routing control states for the target routing controls that you specify in the gating rule.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-route53recoverycontrol-safetyrule.html#cfn-route53recoverycontrol-safetyrule-gatingrule

logical_id

The logical ID for this CloudFormation stack element.

The logical ID of the element is calculated from the path of the resource node in the construct tree.

To override this value, use overrideLogicalId(newLogicalId).

Returns:

the logical ID as a stringified token. This value will only get resolved during synthesis.

name

The name of the assertion rule.

The name must be unique within a control panel. You can use any non-white space character in the name except the following: & > < ‘ (single quote) ” (double quote) ; (semicolon)

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-route53recoverycontrol-safetyrule.html#cfn-route53recoverycontrol-safetyrule-name

node: The construct tree node associated with this construct.

ref

Return a string that will be resolved to a CloudFormation { Ref } for this element.

If, by any chance, the intrinsic reference of a resource is not a string, you could coerce it to an IResolvable through Lazy.any({ produce: resource.ref }).

rule_config

The criteria that you set for specific assertion controls (routing controls) that designate how many control states must be ON as the result of a transaction.

For example, if you have three assertion controls, you might specify ATLEAST 2 for your rule configuration. This means that at least two assertion controls must be ON , so that at least two AWS Regions have traffic flowing to them.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-route53recoverycontrol-safetyrule.html#cfn-route53recoverycontrol-safetyrule-ruleconfig

stack

The stack in which this element is defined.

CfnElements must be defined within a stack scope (directly or indirectly).

tags

The value for a tag.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-route53recoverycontrol-safetyrule.html#cfn-route53recoverycontrol-safetyrule-tags

Static Methods

classmethod is_cfn_element(x)

Returns true if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of instanceof to allow stack elements from different versions of this library to be included in the same stack.

Parameters:

x (Any) –

Return type:

bool

Returns:

The construct as a stack element or undefined if it is not a stack element.

classmethod is_cfn_resource(construct)

Check whether the given construct is a CfnResource.

Parameters:

construct (IConstruct) –

Return type:

bool

classmethod is_construct(x)

Return whether the given object is a Construct.

Parameters:

x (Any) –

Return type:

bool

AssertionRuleProperty

class CfnSafetyRule.AssertionRuleProperty(*, asserted_controls, wait_period_ms)

Bases: object

An assertion rule enforces that, when you change a routing control state, that the criteria that you set in the rule configuration is met.

Otherwise, the change to the routing control is not accepted. For example, the criteria might be that at least one routing control state is On after the transaction so that traffic continues to flow to at least one cell for the application. This ensures that you avoid a fail-open scenario.

Parameters:

asserted_controls (Sequence[str]) – The routing controls that are part of transactions that are evaluated to determine if a request to change a routing control state is allowed. For example, you might include three routing controls, one for each of three AWS Regions.
wait_period_ms (Union[int, float]) – An evaluation period, in milliseconds (ms), during which any request against the target routing controls will fail. This helps prevent flapping of state. The wait period is 5000 ms by default, but you can choose a custom value.

Link:

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-assertionrule.html

ExampleMetadata:

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_route53recoverycontrol as route53recoverycontrol

assertion_rule_property = route53recoverycontrol.CfnSafetyRule.AssertionRuleProperty(
    asserted_controls=["assertedControls"],
    wait_period_ms=123
)

Attributes

asserted_controls

The routing controls that are part of transactions that are evaluated to determine if a request to change a routing control state is allowed.

For example, you might include three routing controls, one for each of three AWS Regions.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-assertionrule.html#cfn-route53recoverycontrol-safetyrule-assertionrule-assertedcontrols

wait_period_ms

An evaluation period, in milliseconds (ms), during which any request against the target routing controls will fail.

This helps prevent flapping of state. The wait period is 5000 ms by default, but you can choose a custom value.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-assertionrule.html#cfn-route53recoverycontrol-safetyrule-assertionrule-waitperiodms

GatingRuleProperty

class CfnSafetyRule.GatingRuleProperty(*, gating_controls, target_controls, wait_period_ms)

Bases: object

A gating rule verifies that a gating routing control or set of gating routing controls, evaluates as true, based on a rule configuration that you specify, which allows a set of routing control state changes to complete.

For example, if you specify one gating routing control and you set the Type in the rule configuration to OR , that indicates that you must set the gating routing control to On for the rule to evaluate as true; that is, for the gating control switch to be On. When you do that, then you can update the routing control states for the target routing controls that you specify in the gating rule.

Parameters:

gating_controls (Sequence[str]) – An array of gating routing control Amazon Resource Names (ARNs). For a simple on-off switch, specify the ARN for one routing control. The gating routing controls are evaluated by the rule configuration that you specify to determine if the target routing control states can be changed.
target_controls (Sequence[str]) – An array of target routing control Amazon Resource Names (ARNs) for which the states can only be updated if the rule configuration that you specify evaluates to true for the gating routing control. As a simple example, if you have a single gating control, it acts as an overall on-off switch for a set of target routing controls. You can use this to manually override automated failover, for example.
wait_period_ms (Union[int, float]) – An evaluation period, in milliseconds (ms), during which any request against the target routing controls will fail. This helps prevent flapping of state. The wait period is 5000 ms by default, but you can choose a custom value.

Link:

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-gatingrule.html

ExampleMetadata:

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_route53recoverycontrol as route53recoverycontrol

gating_rule_property = route53recoverycontrol.CfnSafetyRule.GatingRuleProperty(
    gating_controls=["gatingControls"],
    target_controls=["targetControls"],
    wait_period_ms=123
)

Attributes

gating_controls

An array of gating routing control Amazon Resource Names (ARNs).

For a simple on-off switch, specify the ARN for one routing control. The gating routing controls are evaluated by the rule configuration that you specify to determine if the target routing control states can be changed.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-gatingrule.html#cfn-route53recoverycontrol-safetyrule-gatingrule-gatingcontrols

target_controls

An array of target routing control Amazon Resource Names (ARNs) for which the states can only be updated if the rule configuration that you specify evaluates to true for the gating routing control.

As a simple example, if you have a single gating control, it acts as an overall on-off switch for a set of target routing controls. You can use this to manually override automated failover, for example.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-gatingrule.html#cfn-route53recoverycontrol-safetyrule-gatingrule-targetcontrols

wait_period_ms

An evaluation period, in milliseconds (ms), during which any request against the target routing controls will fail.

This helps prevent flapping of state. The wait period is 5000 ms by default, but you can choose a custom value.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-gatingrule.html#cfn-route53recoverycontrol-safetyrule-gatingrule-waitperiodms

RuleConfigProperty

class CfnSafetyRule.RuleConfigProperty(*, inverted, threshold, type)

Bases: object

The rule configuration for an assertion rule.

That is, the criteria that you set for specific assertion controls (routing controls) that specify how many controls must be enabled after a transaction completes.

Parameters:

inverted (Union[bool, IResolvable]) – Logical negation of the rule. If the rule would usually evaluate true, it’s evaluated as false, and vice versa.
threshold (Union[int, float]) – The value of N, when you specify an ATLEAST rule type. That is, Threshold is the number of controls that must be set when you specify an ATLEAST type.
type (str) – A rule can be one of the following: ATLEAST , AND , or OR .

Link:

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-ruleconfig.html

ExampleMetadata:

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_route53recoverycontrol as route53recoverycontrol

rule_config_property = route53recoverycontrol.CfnSafetyRule.RuleConfigProperty(
    inverted=False,
    threshold=123,
    type="type"
)

Attributes

inverted

Logical negation of the rule.

If the rule would usually evaluate true, it’s evaluated as false, and vice versa.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-ruleconfig.html#cfn-route53recoverycontrol-safetyrule-ruleconfig-inverted

threshold

The value of N, when you specify an ATLEAST rule type.

That is, Threshold is the number of controls that must be set when you specify an ATLEAST type.

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-ruleconfig.html#cfn-route53recoverycontrol-safetyrule-ruleconfig-threshold

type

ATLEAST , AND , or OR .

Link:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-route53recoverycontrol-safetyrule-ruleconfig.html#cfn-route53recoverycontrol-safetyrule-ruleconfig-type
Type:: A rule can be one of the following