Add stat to track number of assertion failures

base/devmode.go

@@ -21,5 +21,6 @@ func IsDevMode() bool {
 // AssertfCtx panics when compiled with the `cb_sg_devmode` build tag, and just warns otherwise.
 // Callers must be aware that they are responsible for handling returns to cover the non-devmode warn case.
 func AssertfCtx(ctx context.Context, format string, args ...any) {
+	SyncGatewayStats.GlobalStats.ResourceUtilization.AssertionFailCount.Add(1)
 	assertLogFn(ctx, format, args...)
 }

base/stats.go

@@ -299,6 +299,10 @@ func (g *GlobalStat) initResourceUtilizationStats() error {
 	if err != nil {
 		return err
 	}
+	resUtil.AssertionFailCount, err = NewIntStat(ResourceUtilizationSubsystem, "assertion_fail_count", StatUnitNoUnits, AssertionFailCountDesc, StatAddedVersion3dot2dot1, StatDeprecatedVersionNotDeprecated, StatStabilityCommitted, nil, nil, prometheus.CounterValue, 0)
+	if err != nil {
+		return err
+	}
 	resUtil.CpuPercentUtil, err = NewFloatStat(ResourceUtilizationSubsystem, "process_cpu_percent_utilization", StatUnitPercent, ProcessCPUPercentUtilDesc, StatAddedVersion3dot0dot0, StatDeprecatedVersion3dot2dot0, StatStabilityCommitted, nil, nil, prometheus.GaugeValue, 0)
 	if err != nil {
 		return err
@@ -379,6 +383,8 @@ type ResourceUtilization struct {
 	SystemMemoryTotal *SgwIntStat `json:"system_memory_total"`
 	// The total number of warnings logged.
 	WarnCount *SgwIntStat `json:"warn_count"`
+	// The total number of assertion failures logged.
+	AssertionFailCount *SgwIntStat `json:"assertion_fail_count"`
 	// The total uptime.
 	Uptime *SgwDurStat `json:"uptime"`
 }

base/stats_descriptions.go

@@ -64,7 +64,8 @@ const (
 
 	SystemMemoryTotalDesc = "The total memory available on the system in bytes."
 
-	WarnCountDesc = "The total number of warnings logged."
+	WarnCountDesc          = "The total number of warnings logged."
+	AssertionFailCountDesc = "The total number of assertion failures logged."
 
 	UptimeDesc = "The total uptime."
 )