System and method for management and recovery of multi-service web transactions

Patent metadata

Field	Value
Publication number	US-10277488-B2
Application number	US-201615260941-A
Country	US
Kind code	B2
Filing date	Sep 9, 2016
Priority date	Sep 9, 2016
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A method is provided, the method including initiating execution of a macro-transaction comprising a set of micro-transactions, wherein execution of a given micro-transaction is based at least on a set of prerequisites associated with the given micro-transaction; causing a pending state of a first micro-transaction to be stored on a database; executing the first micro-transaction; and updating the state of the first micro-transaction in the database based at least on a result returned in response to executing of the first micro-transaction. An apparatus and computer program product are also provided.

First claim

What is claimed is:

1. A method comprising:
initiating execution of a macro-transaction comprising a set of micro-transactions, wherein each micro-transaction comprises a set of prerequisites, and wherein execution of a given micro-transaction is based at least on each prerequisite in the set of prerequisites associated with the given micro-transaction being satisfied;
causing a state of a first micro-transaction of the set of micro-transaction to be stored on a database to indicate that the first micro-transaction is waiting to be executed in response to at least one prerequisite in the set of prerequisites associated with the first micro-transaction not being satisfied;
causing a state of a second micro-transaction to be stored on the database to indicate the second micro-transaction is executing in response to determining that each prerequisite in the set of prerequisites associated with the second micro-transaction is satisfied;
updating the state of the second micro-transaction in the database based at least on a result returned in response to executing the second micro-transaction; and
determining whether the at least one prerequisite in the set of prerequisites associated with the first micro-transaction is satisfied based on the updated state of the second micro-transaction.

2. The method of claim 1 , wherein the set of prerequisites comprises at least one of:
an empty set; and
at least one prerequisite comprising a test corresponding to a state of at least one other micro-transaction in the set of micro-transactions such that execution of the given micro-transaction is executed in response to fulfillment of the test.

3. The method of claim 1 , wherein the result returned from executing the second micro-transaction comprises a promise indicating success, failure, or timeout.

4. The method of claim 3 , wherein updating the state of the second micro-transaction comprises:
in response to the returned result indicating success, causing the stored state of the second micro-transaction to be updated to indicate that the second micro-transaction was successfully executed.

5. The method of claim 3 , further comprising:
in response to the returned result indicating failure:
causing the stored state of the second micro-transaction to be updated to indicate that execution of the second micro-transaction failed; and
executing a respective compensating function for each micro-transaction in the set that has previously stored a success state in the database.

6. The method of claim 3 , further comprising:
in response to the returned result indicating timeout:
executing a probe function associated with the second micro-transaction to determine if the execution of the second micro-transaction either failed or succeeded, and wherein the updating the state of the second micro-transaction comprises updating the state based on the result of the probe function.

7. The method of claim 1 , wherein each micro-transaction corresponds to at least one of: a web-service call and a local call.

8. The method of claim 7 , wherein execution of at least one of the micro-transactions in the set invokes another macro-transaction.

9. The method of claim 1 , wherein each micro-transaction is a triple comprising: a do function for executing the micro-transaction; an undo function for compensating for execution of the micro-transaction; and a probe function for testing whether the micro-transaction was successfully executed after a timeout.

10. An apparatus comprising:
at least one processor; and
at least one non-transitory memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to:
initiate execution of a macro-transaction comprising a set of micro-transactions, wherein each micro-transaction comprises a set of prerequisites, and wherein execution of a given micro-transaction is based at least on each prerequisite in the set of prerequisites associated with the given micro-transaction being satisfied;
cause a state of a first micro-transaction of the set of micro-transaction to be stored on a database to indicate that the first micro-transaction is waiting to be executed in response to at least one prerequisite in the set of prerequisites associated with the first micro-transaction not being satisfied;
cause a state of a second micro-transaction to be stored the database to indicate the second micro-transaction is executing in response to determining that each prerequisite in the set of prerequisites associated with the second micro-transaction is satisfied;
cause the state of the second micro-transaction to be updated in the database based at least on a result returned in response to execution of the second micro-transaction; and
determine whether the at least one prerequisite in the set of prerequisites associated with the first micro-transaction is satisfied based on the updated state of the second micro-transaction.

11. The apparatus of claim 10 , wherein the set of prerequisites comprises at least one of:
an empty set; and
at least one prerequisite comprising a test corresponding to a state of at least one other micro-transaction in the set of micro-transactions such that execution of the given micro-transaction is executed in response to fulfillment of the test.

12. The apparatus of claim 10 , wherein the result returned from execution of the second micro-transaction comprises a promise indicating success, failure, or timeout.

13. The apparatus of claim 12 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to:
cause the stored state of the second micro-transaction to be updated to indicate that the second micro-transaction was successfully executed in response to the returned result indicating success.

14. The apparatus of claim 12 , wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the apparatus at least to:
in response to the returned result indicating failure:
cause the stored state of the second micro-transaction to be updated to indicate that execution of the second micro-transaction failed; and
execute a respective compensating function for each micro-transaction in the set that has a state previously stored in the database indicating successful execution of the micro-transaction.

15. The apparatus of claim 12 , wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the apparatus at least to:
in response to the returned result indicating timeout:
execute a probe function associated with the second micro-transaction to determine if the execution of the second micro-transaction failed or succeeded, and
cause the state of the second micro-transaction to be updated based on the result of the probe function.

16. The apparatus of claim 10 , wherein each micro-transaction corresponds to at least one of: a web-service call and a local call.

17. The apparatus of claim 16 , wherein execution of at least one of the micro-transactions in the set invokes another macro-transaction.

18. The apparatus of claim 16 , wherein each micro-transaction is a triple comprising: a do function for executing the micro-transaction; an undo function for compensating for execution of the micro-transaction; and a probe function for testing whether the micro-transaction was successfully executed after a timeout.

Assignees

• IBM

Inventors

• Leff Avraham
• Rayfield James T

Classifications

• H04L41/0654

  using network fault recovery (ring fault isolation or reconfiguration in loop networks without recovery actions by a network management system H04L12/437) · CPC title

• H04L43/0823 Primary

  Errors, e.g. transmission errors · CPC title

• H04L67/02

  based on web technology, e.g. hypertext transfer protocol [HTTP] · CPC title

• H04L67/142 Primary

  Managing session states for stateless protocols; Signalling session states; State transitions; Keeping-state mechanisms · CPC title