greenplumn faultinjector_warnings 源码
greenplumn faultinjector_warnings 代码
文件路径：/src/backend/utils/misc/faultinjector_warnings.c
/*
* faultinjector_warnings.c
*
* Plugin system for collecting warning functions and processing warnings
* at a later time.
*
* Portions Copyright (c) 2019-Present VMware, Inc. or its affiliates.
*
* IDENTIFICATION
* src/backend/utils/misc/faultinjector_warnings.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "nodes/pg_list.h"
/*
* Implements
*/
#include "utils/faultinjector.h"
#include "faultinjector_warnings.h"
static List *warnings_list;
void
warnings_init(void)
{
warnings_list = NULL;
}
/*
* Provide a function that inspects an entry and warns the user
* of an problematic configuration.
*
* void some_warning_function(FaultInjectorEntry_s faultEntry)
* {
* if (isProblematic(faultEntry))
* elog(WARNING, "this fault injection configuration might have problems");
* }
*
* add_fault_injection_warning(some_warning_function);
*/
void
register_fault_injection_warning(fault_injection_warning_function warning)
{
warnings_list = lappend(warnings_list, warning);
}
/*
* Process all configured warnings for a given faultEntry.
*
*/
void
emit_warnings(FaultInjectorEntry_s faultEntry)
{
ListCell *list_cell = NULL;
foreach(list_cell, warnings_list)
{
fault_injection_warning_function warning_function =
(fault_injection_warning_function) lfirst(list_cell);
warning_function(faultEntry);
}
}
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