Data driven API conversion

1. A system comprising:

one or more storage devices storing instructions that are operable, when executed by one or more computers, to cause the one or more computers to perform operations comprising:

receiving data specifying a first format for one or more messages receivable from a client device and a response format for one or more response messages for sending to the client device;

receiving a first message in the first format from the client device;

identifying, from the first message, a target service;

determining, based on the target service that is identified, a second format;

generating a second message in the second format using the first message;

sending the second message to the target service; and

sending, to the client device, a response message in the response format.

2. The system of claim 1 , further comprising:

receiving results from the target service in a first return format; and

modifying the results to a second return format, the second return format selected based on the data specifying the response format from the client device.

3. The system of claim 1 , further comprising:

identifying an error code and an error message received from the target service;

generating an error in the response format; and

sending the error message to the client device.

4. The system of claim 1 , further comprising:

identifying at least one error returned from the target service; and

providing the error to the client device in a second error format, the second error format determined based on the response format.

5. The system of claim 1 , further comprising:

authenticating the sending using a first authentication method different from a second authentication method used in the second message.

6. The system of claim 1 , wherein the system is operated by the client device.

7. The system of claim 1 , wherein the target service is a RESTful service.

8. A computer-implemented method comprising:

receiving data specifying a first format for one or more messages receivable from a client device and a response format for one or more response messages for sending to the client device;

receiving a first message in the first format from the client device;

identifying, from the first message, a target service;

determining, based on the target service that is identified, a second format;

generating a second message in the second format using the first message;

sending the second message to the target service; and

sending, to the client device, a response message in the response format.

9. The computer-implemented method of claim 8 , further comprising:

receiving results from the target service in a first return format; and

modifying the results to a second return format, the second return format selected based on the data specifying the response format from the client device.

10. The computer-implemented method of claim 8 , further comprising:

identifying an error code and an error message received from the target service;

generating an error in the response format; and

sending the error message to the client device.

11. The computer-implemented method of claim 8 , further comprising:

identifying at least one error returned from the target service; and

providing the error to the client device in a second error format, the second error format determined based on the response format.

12. The computer-implemented method of claim 8 , further comprising:

authenticating the sending using a first authentication method different from a second authentication method used in the second message.

13. The computer-implemented method of claim 8 , wherein the target service is a RESTful service.

14. A non-transitory computer storage medium encoded with computer program instructions that when executed by one or more computers cause the one or more computers to perform operations comprising:

receiving data specifying a first format for one or more messages receivable from a client device and a response format for one or more response messages for sending to the client device;

receiving a first message in the first format from the client device;

identifying, from the first message, a target service;

determining, based on the target service that is identified, a second format;

generating a second message in the second format using the first message;

sending the second message to the target service; and

sending, to the client device, a response message in the response format.

15. The non-transitory computer storage medium of claim 14 , the operations further comprising:

receiving results from the target service in a first return format; and

modifying the results to a second return format, the second return format selected based on the data specifying the response format from the client device.

16. The non-transitory computer storage medium of claim 14 , the operations further comprising:

identifying an error code and an error message received from the target service;

generating an error in the response format; and

sending the error message to the client device.

17. The non-transitory computer storage medium of claim 14 , the operations further comprising:

identifying at least one error returned from the target service; and

providing the error to the client device in a second error format, the second error format determined based on the response format.

18. The non-transitory computer storage medium of claim 14 , the operations further comprising:

authenticating the sending using a first authentication method different from a second authentication method used in the second message.

19. The non-transitory computer storage medium of claim 14 , wherein the target service is a RESTful service.

20. The system of claim 1 , the operations further comprising:

determining, based on the client device, a type of authentication for validating the first message; and

validating the first message in accordance with the type of authentication.