How startPhase is currently implemented
Example using the Demo. The table below shows the startPhase for each Composition Definition Element
| Participant | Composition Definition Element | startPhase |
|---|---|---|
| Policy | onap.policy.clamp.ac.element.Policy_AutomationCompositionElement | 0 |
| K8s | onap.policy.clamp.ac.element.K8S_StarterAutomationCompositionElement | 0 |
| K8s | onap.policy.clamp.ac.element.K8S_BridgeAutomationCompositionElement | 0 |
| K8s | onap.policy.clamp.ac.element.K8S_SinkAutomationCompositionElement | 0 |
| Http | onap.policy.clamp.ac.element.Http_StarterAutomationCompositionElement | 1 |
| Http | onap.policy.clamp.ac.element.Http_BridgeAutomationCompositionElement | 1 |
| Http | onap.policy.clamp.ac.element.Http_SinkAutomationCompositionElement | 1 |
...
- startPhase is configured in composition definition element and defines the order of execution of instance elements;
- Any instance element is executed only once;
- All instance elements whit same startPhase are executed at same time in parallel;
- startPhase is used by deploy and unlock; startPhase in reverse order is used by lock, undeploy and delete;
Alternative flow with stepPhase
To maintain the backward compatibility, we are introducing a new property stepPhase.
Minimal support for stepPhase:
- Still valid the startPhase definition for backward compatibility;
- stepPhase is configured in composition definition element;
- stepPhase is applied only for migrate operation;
- Any instance element could be executed more then one time;
- All instance elements whit same stepPhase are executed at same time in parallel;
Example of composition definition element stepPhase property:
| Code Block | ||
|---|---|---|
| ||
properties:
stepPhase: [0,2] |
Default value set to 0.
Full support for stepPhase:
- Still valid the startPhase definition for backward compatibility;
- Using startPhase and stepPhase in a composition definition is not valid;
- stepPhase is configured in composition definition element;
- Any composition definition element could have different sptePhase for each operation: for example the order for deploy could different for migrate;
- Any instance element could be executed more then one time;
- All instance elements whit same stepPhase are executed at same time in parallel;
- stepPhase has not reversal order.
...
All not defined operations will be set to 0.
Example of stepPhase
The table below shows the stepPhase for each Composition Definition Element:
| Participant | Composition Definition Element | stepPhase |
|---|---|---|
| SEF | A1 | 0, 2 |
| SEF | A2 | 0, 2 |
| CNLCM | B | 1 |
When an instance element has completed a step, not means that the full implementation is completed (DEPLOYED state).
...