Align schema_size collector with runtime config refactor

Signed-off-by: Ulysse Couturier <ulysse.couturier@ovhcloud.com>

collector/info_schema_schema_size.go

@@ -22,6 +22,7 @@ import (
 	"log/slog"
 
 	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/mysqld_exporter/config"
 )
 
 const schemaSizeQuery = `
@@ -43,7 +44,7 @@ var (
 )
 
 // ScrapeSchemaSize collects from `information_schema.tables` aggregated by schema.
-type ScrapeSchemaSize struct{}
+type ScrapeSchemaSize config.EmptyConfig
 
 // Name of the Scraper. Should be unique.
 func (ScrapeSchemaSize) Name() string {

collector/runtime.go

@@ -95,6 +95,7 @@ func AllScrapers(cfg config.Config) []Scraper {
 		ScrapeProcesslist(cfg.InfoSchemaProcesslist),
 		ScrapeUser(cfg.MysqlUser),
 		ScrapeTableSchema(cfg.InfoSchemaTables),
+		ScrapeSchemaSize(emptyConfig),
 		ScrapeInfoSchemaInnodbTablespaces(emptyConfig),
 		ScrapeInnodbMetrics(emptyConfig),
 		ScrapeInnodbTrx(emptyConfig),

config/config.go

@@ -187,6 +187,7 @@ func DefaultCollectorConfig() map[string]bool {
 		"info_schema.processlist":                          false,
 		"mysql.user":                                       false,
 		"info_schema.tables":                               false,
+		"info_schema.schema_size":                          false,
 		"info_schema.innodb_tablespaces":                   false,
 		"info_schema.innodb_metrics":                       false,
 		"info_schema.innodb_trx":                           false,

mysqld_exporter_test.go

@@ -317,7 +317,8 @@ func TestSchemaSizeCollectorRegistration(t *testing.T) {
 	if got := scraper.Name(); got != "info_schema.schema_size" {
 		t.Fatalf("collector name = %q", got)
 	}
-	if enabled, exists := scrapers[scraper]; !exists || enabled {
+	cfg := config.NewConfigWithDefaults()
+	if enabled, exists := cfg.Collectors[scraper.Name()]; !exists || enabled {
 		t.Fatal("schema size collector must be registered and disabled by default")
 	}
 }