Intelligent distributed tracing

1. A computer-implemented method for distributed tracing, comprising:

receiving, by one or more processing units, a user request for a transaction;

extracting, by one or more processing units, feature data from the user request;

determining, by one or more processing units, whether the feature data matches at least one policy generated based on at least one error response received from at least one service;

instructing, by one or more processing units, the at least one service to collect tracing data for the transaction in a head-based fashion responsive to the feature data matching the at least one policy; and

instructing, by one or more processing units, the at least one service to collect tracing data for the transaction in a tail-based fashion responsive to the extracted feature data does not match any of the at least one policy.

2. The computer-implemented method of claim 1 , further comprising:

determining, by one or more processing units, a further error response received from a service is a new type of error response; and

updating, by one or more processing units, the at least one policy by adding a new policy generated based on the further error response.

3. The computer-implemented method of claim 1 , further comprising:

determining, by one or more processing units, whether the transaction with tracing data collected is successful; and

removing, by one or more processing unit, the at least one policy corresponding to the transaction, responsive to the transaction being successful.

4. The computer-implemented method of claim 1 , further comprising:

synchronizing, by one or more processing units, the at least one policy with a policy server.

5. The computer-implemented method of claim 1 , further comprising:

instructing, by one or more processing units, the at least one service to send the collected tracing data to a tracing server without storing the tracing data in a corresponding local environment.

6. The computer-implemented method of claim 1 , further comprising:

receiving, by one or more processing units, response data for the user request from the at least one service; and

generating, by one or more processing units, the at least one policy responsive to the response data indicating an error response.

7. A computer-implemented system for distributed tracing, comprising:

a memory medium comprising program instructions; and

a processor, for executing the program instructions, when executing the program instructions causes the system to:

receive a user request for a transaction;

extract feature data from the user request;

determine whether the feature data matches at least one policy generated based on at least one error response received from at least one service;

instruct the at least one service to collect tracing data for the transaction in a head-based fashion responsive to the feature data matching at least one policy; and

instruct the at least one service to collect tracing data for the transaction in a tail-based fashion responsive to the extracted feature data does not match any one of the at least one policy.

8. The computer-implemented system of claim 7 , when executing the program instructions, the processor further causes the system to:

determine a further error response received from a service is a new type of error response; and

update the at least one policy by adding one new policy generated based on the further error response.

9. The computer-implemented system of claim 7 , when executing the program instructions, the processor further causes the system to:

determine if the transaction successfully collected the tracing data; and

responsive to the transaction successfully collecting the tracing data, remove the policy corresponding to the transaction.

10. The computer-implemented system of claim 7 , when executing the program instructions, the processor further causes the system to:

synchronize the at least one policy with a policy server.

11. The computer-implemented system of claim 7 , when executing the program instructions, the processor further causes the system to:

instruct the at least one service to send the tracing data to a tracing server without storing the tracing data in a corresponding local environment.

12. The computer-implemented system of claim 7 , when executing the program instructions, the processor further causes the system to:

receive response data for the user request from the at least one service; and

generate the at least one policy responsive to the response data indicating an error response.

13. A computer program product for distributed tracing, comprising a non-transitory computer readable storage having program codes embodied therewith, the program codes comprising:

program codes to receive a user request for a transaction;

program codes to extract feature data from the user request;

program codes to determine whether the feature data matches at least one policy generated based on at least one error response received from at least one service;

program codes to instruct the at least one service to collect tracing data for the transaction in a head-based fashion responsive to the feature data matching at least one policy; and

program codes to instruct the at least one service to collect tracing data for the transaction in a tail-based fashion responsive to the extracted feature data does not match any one of the at least one policy.

14. The computer program product of claim 13 , wherein the program codes further comprising:

program codes to determine a further error response received from a service is a new type of error response; and

program codes to update the at least one policy by adding one new policy generated based on the further error response.

15. The computer program product of claim 13 , wherein the program codes further comprising:

program codes to determine if the transaction successfully collected the tracing data; and

responsive to the transaction successfully collecting the tracing data, program codes to remove the policy corresponding to the transaction.

16. The computer program product of claim 13 , wherein the program codes further comprising:

program codes to instruct the at least one service to send the tracing data to a tracing server without storing the tracing data in a corresponding local environment.

17. The computer program product of claim 13 , wherein the program codes further comprising:

program codes to receive response data for the user request from the at least one service; and

program codes to generate the at least one policy, responsive to the response data indicating an error response.