Network Firewall stateless custom action dimensions.
Use this configuration to define custom action dimensions to log in CloudWatch metrics.
You can optionally specify a named custom action to apply.
For this action, Network Firewall assigns a dimension to Amazon CloudWatch metrics
with the name set to CustomAction and a value that you specify.
NetworkConfig / CentralNetworkServicesConfig / NfwConfig / NfwRuleGroupConfig / NfwRuleGroupRuleConfig / NfwRuleSourceConfig / NfwStatelessRulesAndCustomActionsConfig / NfwRuleSourceCustomActionConfig / NfwRuleSourceCustomActionDefinitionConfig / NfwRuleSourceCustomActionDimensionConfig
Network Firewall stateless custom action dimensions. Use this configuration to define custom action dimensions to log in CloudWatch metrics. You can optionally specify a named custom action to apply. For this action, Network Firewall assigns a dimension to Amazon CloudWatch metrics with the name set to CustomAction and a value that you specify.
See
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-networkfirewall-rulegroup-dimension.html
Example