ConditionTypeAlwaysTrue is a special condition type whose status is always "True".

ConditionTypeAppReady is a special condition type that combines the efficiency of the rollout status check, the compatibility of the pod ready check.

ConditionTypePodReady is a special condition type whose status is determined by fetching the pods associated with the target object and checking that they all have a condition type of "Ready" with a status of "True".

ConditionTypeRolloutStatus is a special condition type whose status is determined using the equivalent of a `kubectl rollout status` call on the target object.

ConditionTypeStatus is a special condition type that can be used to check an arbitrary string on the status of the target object.

ReadinessChecker is used to check the conditions of runtime objects.

ReadinessError is an error that occurs while testing for readiness, it indicates a "hard failure" and is not just an indicator that something is not ready (i.e.