Operation
Description
GreenVulcano® ESB uses the element Operation to define an operational workflow.
Each workflow is identified by a triple <service, client, operation> and it is made instantiating a Flow, with VCL operations (GreenVulcano® ESB plugins) of one or more participating systems (Participant selected from those defined in the Systems).
VulCon / GV Console Configuration
GreenVulcano® ESB allows you to configure the following operations:
- Forward
- GetReply
- GetRequest
- Request
- RequestReply
- SendReply
And correspond (apart from the Forward) to the communication primitives of GreenVulcano® ESB.
The Forward workflows are driven by the internal mechanisms of GreenVulcano® ESB to complete transactions that do not require assistance from external systems.
You can enable some consistency check on the data passed on GreenVulcano® ESB.
The Operation Element is used by Service and its attributes are:
| Attribute | Type | Description |
|---|---|---|
| class | fixed | This attributes must assume the value it.greenvulcano.gvesb.core.flow.GVFlowWF |
| type | fixed | This attributes must assume the value operation |
| name | required | Operation's name. Corresponds to a GreenVulcano® ESB communication primitive or a forward.
The attribute's admitted values are: - RequestReply - Request - GetReply - GetRequest - SendReply - Forward |
| forward-name | optional | Forward's name. Must be specified only if you are setting up a workflow for a forward. |
| out-check-type | required | Enable a consistency check of GVBuffer. It can take one of three values:
- none: does not make any check. - sys-svc: fields system and service the result should take the same values in the input buffer. - sys-svc-id: fields system, service and id of the result must assume the same values that assumed in the input buffer. This setting should not be used in operations with semantics GetRequest. |
| operation-activation | required | Activation status of the current system/service operation. The state can take two values:
- on: the operation is active. Default value. - off: the operation is not active. |
Operation has the following subelements:
- Description
- Participant
- Flow
- SubFlow
- Conditions
- OperationManagement
OperationManagement
Use this element to define actions for performing on the domain against the following events:
- FailureAction: useful to disable a component (ejb, mdb) against a configurable rate of errors.
- EnableAction: useful to enable a component (ejb, mdb) against the enabling of the operation or service.
- DisableAction: useful to disable a component (ejb, mdb) against the disabling of the operation or service.
It has the following subelements:
- Description,
- FailureAction with attributes:
- component: Specifies the name of the component to disable.
- max-failure-rate: Specifies the number of bankruptcies in the second for the given operation before disabling the component.
The errors relate to a single server, and then consider that there are N servers in the cluster.
- EnableAction with attribute:
- component: Specifies the name of the component to enable.
- DisableAction with its attribute:
- component: Specifies the name of the component to disable.
