Controllers: Make available as a target (#110357)

* Controllers: Add to build process
* Allow setting through env variables

pkg/server/operator.go

@@ -0,0 +1,35 @@
+package server
+
+import (
+	"github.com/grafana/grafana/pkg/services/apiserver/standalone"
+	"github.com/grafana/grafana/pkg/setting"
+	"github.com/urfave/cli/v2"
+)
+
+// Operator represents an app operator that is available in the Grafana binary
+type Operator struct {
+	Name        string
+	Description string
+	RunFunc     func(standalone.BuildInfo, *cli.Context, *setting.Cfg) error
+}
+
+var operatorsRegistry []Operator
+
+// RegisterOperator registers an app operator that is baked into the Grafana binary
+func RegisterOperator(operator Operator) {
+	operatorsRegistry = append(operatorsRegistry, operator)
+}
+
+// GetRegisteredOperators returns all registered operators
+func GetRegisteredOperators() []Operator {
+	return operatorsRegistry
+}
+
+// GetRegisteredOperatorNames returns the names of all registered operators
+func GetRegisteredOperatorNames() []string {
+	names := make([]string, len(operatorsRegistry))
+	for i, op := range operatorsRegistry {
+		names[i] = op.Name
+	}
+	return names
+}