Information Technology Reference
In-Depth Information
to provide agents with the environment in which they may relocate and realize their
tasks. In particular, it is necessary to introduce a service when, in response to the
client's request, the server may create and activate an agent (corresponding to the
request) in a special area referred to as the action zone of the agent. An example
of such an operation of the system may be illustrated by the following scenario
(Fig.
5.11
).
Client
Kl
sends a request to the server
Srw
to activate the agent. To this purpose,
it prepares the model of the agent which is sent through the network.
Client
Kl
sends a request to the server
Srw
to create and activate the appropriate
agent. The model of the agent is attached to the request.
The server is equipped with the action zone of the agent
Sda
—a specific
environment—in which the agent may be activated as a result of the client's request.
The server replies to the request of the client
Kl
thus confirming the activation.
The agent continues to realize requests in the zone of its action.
A rescue operation managed by the computer system may be an example of the appli-
cation of the system constructed according to the (SOA) service oriented architecture
with the use of agents. This operation, managed by the system SOA with the agents,
may be as follows:
Server
Hospital 1
Server
Hospital 2
Server
Hospital 3
Emergency
telephone
number 112
1
2
Server
Medical
transport
Server
Causalty care
agents
accident
3
Agent
Rescue
operation
Server
Rescue
operation
agents
Server
Fire Brigade
Server
Police
Fig. 5.12
Schema illustrating the stages of performing services by a group of servers
