Composition Engine as a Service

1 . A computer-implemented method for providing a composition engine as a service, the method comprising:

providing a composition engine as a service, the composition engine as a service configured to receive requests from multiple service consumers using any of multiple service consumer protocols;

receiving a first request in the composition engine as a service from a service consumer operated by a customer, the first request conforming to a service consumer protocol;

generating, by the composition engine as a service and in response to the first request, a second request to each of one or more provider systems, the second request conforming to a provider system protocol, the composition engine as a service configured to generate requests conforming to any of multiple provider system protocols;

receiving, by the composition engine as a service, information from the provider system, and adapting the received information to conform to the service consumer protocol; and

exposing, by the composition engine as a service, a web service that makes the adapted information available to the service consumer.

2 . The computer-implemented method of claim 1 , wherein the first request is received, in the composition engine as a service, by a client request handler that interprets the first request and routes the first request to an associated module.

3 . The computer-implemented method of claim 1 , further comprising adapting the service consumer protocol, by a protocol adapter in the composition engine as a service, into an internal format for the composition engine as a service.

4 . The computer-implemented method of claim 3 , wherein the internal format is for a component that includes an adaptation engine configured to adapt the received information to conform to the service consumer protocol, the adaptation engine using an adaptation model and not using domain-specific code associated with a domain of the provider system.

5 . The computer-implemented method of claim 3 , wherein the component includes domain-specific code associated with a domain of the provider system.

6 . The computer-implemented method of claim 5 , wherein the domain-specific code is also tenant-specific to the customer.

7 . The computer-implemented method of claim 1 , further comprising receiving, in the composition engine as a service, a request from the service consumer that identifies two or more web services provided by the composition engine as a service, composing, by the composition engine as a service, a single web service from the identified two or more web services, and exposing, by the composition engine as a service, the composed single web service to the service consumer.

8 . A computer program product embodied in a non-transitory computer-readable storage medium and comprising instructions that when executed by a processor perform a method for providing a composition engine as a service, the method comprising:

providing a composition engine as a service, the composition engine as a service configured to receive requests from multiple service consumers using any of multiple service consumer protocols;

receiving a first request in the composition engine as a service from a service consumer operated by a customer, the first request conforming to a service consumer protocol;

generating, by the composition engine as a service and in response to the first request, a second request to each of one or more provider systems, the second request conforming to a provider system protocol, the composition engine as a service configured to generate requests conforming to any of multiple provider system protocols;

receiving, by the composition engine as a service, information from the provider system, and adapting the received information to conform to the service consumer protocol; and

exposing, by the composition engine as a service, a web service that makes the adapted information available to the service consumer.

9 . The computer program product of claim 8 , wherein the first request is received, in the composition engine as a service, by a client request handler that interprets the first request and routes the first request to an associated module.

10 . The computer program product of claim 8 , the method further comprising adapting the service consumer protocol, by a protocol adapter in the composition engine as a service, into an internal format for the composition engine as a service.

11 . The computer program product of claim 10 , wherein the internal format is for a component that includes an adaptation engine configured to adapt the received information to conform to the service consumer protocol, the adaptation engine using an adaptation model and not using domain-specific code associated with a domain of the provider system.

12 . The computer program product of claim 10 , wherein the component includes domain-specific code associated with a domain of the provider system.

13 . The computer program product of claim 12 , wherein the domain-specific code is also tenant-specific to the customer.

14 . The computer program product of claim 8 , the method further comprising receiving, in the composition engine as a service, a request from the service consumer that identifies two or more web services provided by the composition engine as a service, composing, by the composition engine as a service, a single web service from the identified two or more web services, and exposing, by the composition engine as a service, the composed single web service to the service consumer.

15 . A system comprising:

one or more processors; and

a computer program product embodied in a non-transitory computer-readable storage medium and comprising instructions that when executed by a processor perform a method for providing a composition engine as a service, the method comprising:

providing a composition engine as a service, the composition engine as a service configured to receive requests from multiple service consumers using any of multiple service consumer protocols;

receiving a first request in the composition engine as a service from a service consumer operated by a customer, the first request conforming to a service consumer protocol;

generating, by the composition engine as a service and in response to the first request, a second request to each of one or more provider systems, the second request conforming to a provider system protocol, the composition engine as a service configured to generate requests conforming to any of multiple provider system protocols;

receiving, by the composition engine as a service, information from the provider system, and adapting the received information to conform to the service consumer protocol; and

exposing, by the composition engine as a service, a web service that makes the adapted information available to the service consumer.

16 . The system of claim 15 , wherein the first request is received, in the composition engine as a service, by a client request handler that interprets the first request and routes the first request to an associated module.

17 . The system of claim 15 , the method further comprising adapting the service consumer protocol, by a protocol adapter in the composition engine as a service, into an internal format for the composition engine as a service.

18 . The system of claim 17 , wherein the internal format is for a component that includes an adaptation engine configured to adapt the received information to conform to the service consumer protocol, the adaptation engine using an adaptation model and not using domain-specific code associated with a domain of the provider system.

19 . The system of claim 17 , wherein the component includes domain-specific code associated with a domain of the provider system.

20 . The system of claim 15 , the method further comprising receiving, in the composition engine as a service, a request from the service consumer that identifies two or more web services provided by the composition engine as a service, composing, by the composition engine as a service, a single web service from the identified two or more web services, and exposing, by the composition engine as a service, the composed single web service to the service consumer.