- Added upstream objects

- Renamed host templates to nginx templates
- Generate upstream templates
- Better nginx error reporting when reloading
- Use tparse for golang test reporting

backend/internal/validator/upstreams.go

@@ -0,0 +1,39 @@
+package validator
+
+import (
+	"errors"
+	"fmt"
+
+	"npm/internal/entity/nginxtemplate"
+	"npm/internal/entity/upstream"
+)
+
+// ValidateUpstream will check if associated objects exist and other checks
+// will return  a nil error if things are OK
+func ValidateUpstream(u upstream.Model) error {
+	// Needs to have more than 1 server
+	if len(u.Servers) < 2 {
+		return errors.New("Upstreams require at least 2 servers")
+	}
+
+	// Backup servers aren't permitted with hash balancing
+	if u.IPHash {
+		// check all servers for a backup param
+		for _, server := range u.Servers {
+			if server.Backup {
+				return errors.New("Backup servers cannot be used with hash balancing")
+			}
+		}
+	}
+
+	// Check the nginx template exists and has the same type.
+	nginxTemplate, err := nginxtemplate.GetByID(u.NginxTemplateID)
+	if err != nil {
+		return fmt.Errorf("Nginx Template #%d does not exist", u.NginxTemplateID)
+	}
+	if nginxTemplate.Type != "upstream" {
+		return fmt.Errorf("Host Template #%d is not valid for this upstream", u.NginxTemplateID)
+	}
+
+	return nil
+}