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Allow query classifier to initialize itself

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The process and thread initialization/finalization of the query
classifier plugins is handled using the process and thread
initialization/finalization functions in the module object.

However, the top-level query classifier will also need to perform
process and thread initialization when transaction boundaries are
detected using regular expressions.
This commit is contained in:
Johan Wikman
2017-03-10 14:01:36 +02:00
parent 669d6e95f4
commit a58f944f23
8 changed files with 68 additions and 25 deletions
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39
server/core/query_classifier.c
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@ -38,7 +38,6 @@ static const char default_qc_name[] = "qc_sqlite";
static QUERY_CLASSIFIER* classifier;
bool qc_setup(const char* plugin_name, const char* plugin_args)
{
QC_TRACE();
@ -67,21 +66,31 @@ bool qc_setup(const char* plugin_name, const char* plugin_args)
return (rv == QC_RESULT_OK) ? true : false;
}
bool qc_process_init(void)
bool qc_process_init(uint32_t kind)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_process_init() == 0;
bool rc = true;
if (kind & QC_INIT_PLUGIN)
{
rc = classifier->qc_process_init() == 0;
}
return rc;
}
void qc_process_end(void)
void qc_process_end(uint32_t kind)
{
QC_TRACE();
ss_dassert(classifier);
classifier->qc_process_end();
classifier = NULL;
if (kind & QC_INIT_PLUGIN)
{
classifier->qc_process_end();
classifier = NULL;
}
}
QUERY_CLASSIFIER* qc_load(const char* plugin_name)
@ -106,20 +115,30 @@ void qc_unload(QUERY_CLASSIFIER* classifier)
// TODO: actually can unload something.
}
bool qc_thread_init(void)
bool qc_thread_init(uint32_t kind)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_thread_init() == 0;
bool rc = true;
if (kind & QC_INIT_PLUGIN)
{
rc = classifier->qc_thread_init() == 0;
}
return rc;
}
void qc_thread_end(void)
void qc_thread_end(uint32_t kind)
{
QC_TRACE();
ss_dassert(classifier);
return classifier->qc_thread_end();
if (kind & QC_INIT_PLUGIN)
{
classifier->qc_thread_end();
}
}
qc_parse_result_t qc_parse(GWBUF* query)