Interface for accessing an open distributed transaction processing system log file
View Patent ↗Method and apparatus for providing access to an event log file. An open distributed transaction processing system writes information to a current logical portion of the event log file in processing transactions. A first service is callable by a client to instruct the open distributed transaction processing system to cycle the event log file. In other embodiments, additional services are accessible to the client for manipulating the event log file.
1. A processor-based method for providing access to a plurality of event log files, comprising:
writing information to respective current logical portions of the plurality of event log files by an open distributed transaction processing system in response to processing of transactions;
initiating a first service in response to a service call by a client;
instructing the open distributed transaction processing system, via the first service, to cycle a selected one of the plurality of event log files identified by a file name provided by a client to the first service;
preventing cycling of an event log file requested by file name by the first service in response to a first state of a first configuration parameter that is associated with all of the plurality of event log files, wherein the preventing includes preventing the cycling in response to a second state of the first configuration parameter and a first state of a second configuration parameter associated with the event log file with the input file name; and
cycling the selected one of the plurality of event log files in response to the second state of the first configuration parameter and a second state of the second configuration parameter, wherein cycling includes stopping writing of information to the current logical portion of the file and commencing writing of information to a new logical portion of the file by the open distributed transaction processing system in cycling the event log file, whereby the new logical portion becomes the current logical portion.
2. The method of claim 1 , further comprising;
initiating a second service in response to a service call by a client; and
instructing the open distributed transaction processing system, via the second service to obtain and return a file name of the event log file.
3. The method of claim 1 , further comprising:
initiating a second service in response to a service call by a client; and
returning the contents of the event log file to the client via the second service.
4. The method of claim 1 , further comprising:
initiating a second service in response to a service call by a client;
instructing the open distributed transaction processing system, via the second service to obtain and return a file name of the event log file; and
denying the second service access to the file name of the event log file in response to the first state of the first configuration parameter associated with the event log file.
5. An apparatus for providing access to a plurality of event log files, comprising:
means for writing information to respective current logical portions of the plurality of event log files by an open distributed transaction processing system in response to processing of transactions;
means for initiating a first service in response to a service call by a client;
means for instructing the open distributed transaction processing system, via the first service, to cycle a selected one of the plurality of event log files identified by a file name provided by a client to the first service;
means for preventing cycling of an event log file requested by file name by the first service in response to a first state of a first configuration parameter that is associated with all of the plurality of event log files, wherein the preventing includes preventing the cycling in response to a second state of the first configuration parameter and a first state of a second configuration parameter associated with the event log file with the input file name; and
means for cycling the selected one of the plurality of event log files in response to the second state of the first configuration parameter and a second state of the second configuration parameter, wherein cycling includes stopping writing of information to the current logical portion of the file and commencing writing of information to a new logical portion of the file by the open distributed transaction processing system in cycling the event log file, whereby the new logical portion becomes the current logical portion.
6. The apparatus of claim 5 , further comprising;
means for initiating a second service in response to a service call by a client; and
means for instructing the open distributed transaction processing system, via the second service to obtain and return a file name of the event log file.
7. The apparatus of claim 5 , further comprising:
means for initiating a second service in response to a service call by a client; and
means for returning the contents of the event log file to the client via the second service.
8. A client-server computing arrangement for providing access to a plurality of event log files, comprising:
an open distributed transaction processing system configured to write information to respective current logical portions of the plurality of event log files in response to processing of transactions, the system including a set of program-callable routines that provide access to the event log file;
a set of library routines configured to call the system routines;
a set of client-callable services, wherein one or more of the services call one or more of the library routines, and at least one of the services is coupled to the event log file, the set of services including a first service configured to instruct the open distributed transaction processing system via one or more routines in the library to cycle a selected on of the plurality of event log files identified by a file name provided by a client to the first service, wherein cycling includes stopping writing of information to the current logical portion of the file and commencing writing of information to a new logical portion of the file, whereby the new logical portion becomes the current logical portion; and
wherein the distributed transaction processing system is configured to prevent cycling of an event log file requested by file name by the first service in response to a first state of a first configuration parameter that is associated with all of the plurality of event log files, wherein the preventing includes preventing the cycling in response to a second state of the first configuration parameter and a first state of a second configuration parameter associated with the event log file with the input file name, and the distributed transaction processing system further configured to cycle the selected one of the plurality of event log files in response to the second state of the first configuration parameter and a second state of the second configuration parameter.
9. The arrangement of claim 8 , wherein the set of services includes a second service that instructs the open distributed transaction processing system via one or more routines in the library to obtain and return a file name of the event log file.
10. The arrangement of claim 8 , wherein the set of services includes a second service that returns the contents of the event log file to a calling client.
11. The arrangement of claim 8 , wherein the set of services includes a second service that instructs the open distributed transaction processing system via one or more routines in the library to obtain and return a file name of the event log file, and the open distributed transaction processing system is configured to deny the second service access to the file name of the event log file in response to the first state of the first configuration parameter associated with the event log file.