ApiExitCommon and ApiExitTemplate stanzas of the mqs.ini file

Use the Exits IBM MQ properties page from the IBM MQ Explorer, or the ApiExitTemplate and ApiExitCommon stanza in the mqs.ini file to identify API exit routines for all queue managers. On Windows systems, we can also use the amqmdain command to change the entries for API exits. (To identify API exit routines for individual queue managers, we use the ApiExitLocal stanza.

Name=ApiExit_name

The descriptive name of the API exit passed to it in the ExitInfoName field of the MQAXP structure.

This name must be unique, no longer than 48 characters, and contain only valid characters for the names of IBM MQ objects (for example, queue names).

Function=function_name

The name of the function entry point into the module containing the API exit code. This entry point is the MQ_INIT_EXIT function.

The length of this field is limited to MQ_EXIT_NAME_LENGTH.

Module=module_name

The module containing the API exit code.

If this field contains the full path name of the module it is used as is. If this field contains just the module name, the module is located using the ExitsDefaultPath attribute in the ExitPath stanza of the qm.ini file.

On platforms that support separate threaded libraries, we must provide both a non-threaded and a threaded version of the API exit module. The threaded version must have an _r suffix. The threaded version of the IBM MQ application stub implicitly appends _r to the given module name before it is loaded.

The length of this field is limited to the maximum path length the platform supports.

Data=data_name

Data to be passed to the API exit in the ExitData field of the MQAXP structure.

If we include this attribute, leading and trailing blanks are removed, the remaining string is truncated to 32 characters, and the result is passed to the exit. If we omit this attribute, the default value of 32 blanks is passed to the exit.

The maximum length of this field is 32 characters.

Sequence=sequence_number

The sequence in which this API exit is called relative to other API exits. An exit with a low sequence number is called before an exit with a higher sequence number. There is no need for the sequence numbering of exits to be contiguous. A sequence of 1, 2, 3 has the same result as a sequence of 7, 42, 1096. If two exits have the same sequence number, the queue manager decides which one to call first. We can tell which was called after the event by putting the time or a marker in ExitChainArea indicated by the ExitChainAreaPtr in MQAXP or by writing your own log file.

This attribute is an unsigned numeric value.

Parent topic: Attributes for changing IBM MQ configuration information