6 PubSub Communication Parameters

6.2 Common Configuration Parameters

6.2.1 PubSubState State Machine

The PubSubState is used to expose and control the operation of a PubSub component. It is an enumeration of the possible states. The enumeration values are described in Table 1.
Table 1 – PubSubState Values
Value | Description |
---|---|
Disabled_0 | The PubSub component is configured but currently disabled. |
Paused_1 | The PubSub component is enabled but currently paused by a parent component. The parent component is either Disabled_0 or Paused_1. |
Operational_2 | The PubSub component is operational. |
Error_3 | The PubSub component is in an error state. |
Figure 19 depicts the PubSub components that have a PubSub state and their parent-child relationship. State changes of children are based on changes of the parent state. The root of the hierarchy is the PublishSubscribe component.
Figure 19 – PubSub Component State Dependencies
Figure 20 describes the formal state machine with the possible transitions.
Figure 20 – PubSubState State Machine
Table 2 formally defines the transitions of the state machine.
Table 2 – PubSubState State Machine
Source State | Target State | Trigger Description |
---|---|---|
Disabled_0 | Paused_1 | The component was successfully enabled but the parent component is in the state Disabled_0 or Paused_1. |
Disabled_0 | Operational_2 | The component was successfully enabled. |
Paused_1 | Disabled_0 | The component was successfully disabled. |
Paused_1 | Operational_2 | The state of the parent component changed to Operational_2. |
Operational_2 | Disabled_0 | The component was successfully disabled. |
Operational_2 | Paused_1 | The state of the parent component changed to Disabled_0 or Paused_1. |
Operational_2 | Error_3 | There is a pending error situation for the related PubSub component. |
Error_3 | Disabled_0 | The component was successfully disabled. |
Error_3 | Paused_1 | The state of the parent component changed to Disabled_0 or Paused_1. |
Error_3 | Operational_2 | The error situation was resolved for the related PubSub component. |