designanimplementaconversationhandlerfor coordinationprotocols

The aim of this project is to design an implement a conversation handler for

coordination protocols.

Step 1:

Implement 10 different REST Web services. For simplicity, we assume that each

service requires as input the name of the user. The service will return one of the two

messages:

- If the user name’s starts with A-M, a simple JS0N message stating: user’s

name, invocation date, and invocation time.

- If the user name’s starts with N-Z, a simple XML message stating: user’s

name, invocation date, and invocation time.

Step 2:

Input: A file with a state diagram specification that describes the coordination

protocols for the 10 Web services. The transitions may be labeled with conditions

(document returned by the service invocation). Your implementation and design

should work for any coordination protocol.

Based on the current state of the user’s conversation with the Web services, the

system shows (on a Web interface) the services that the user will be able to invoke

from that state, until the end of the coordination protocol. Each time a user selects

service, that service is invoked and the resulting message is shown to the user.

Important: Different users should be able to initiate conversations with the Web

services at the same time. One way to show that is to use the system from multiple

Web browsers at the same time. You are required to include a unique conversation

ID in each message. All messages of the same conversation will carry the same

unique conversation ID value.

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