host templates

cmd/dkl-local-server/ws-hosts-from-templates.go

@@ -0,0 +1,108 @@
+package main
+
+import (
+	"log"
+
+	"github.com/emicklei/go-restful"
+
+	"novit.tech/direktil/pkg/localconfig"
+)
+
+var hostsFromTemplate = KVSecrets[HostFromTemplate]{"hosts-from-template"}
+
+type HostFromTemplate struct {
+	Template string
+	IP       string
+}
+
+func (hft HostFromTemplate) ClusterName(cfg *localconfig.Config) string {
+	for _, ht := range cfg.HostTemplates {
+		if ht.Name == hft.Template {
+			return ht.ClusterName
+		}
+	}
+	return ""
+}
+
+func hostOrTemplate(cfg *localconfig.Config, name string) (host *localconfig.Host) {
+	host = cfg.Host(name)
+	if host != nil {
+		log.Print("no host named ", name)
+		return
+	}
+
+	hft, found, err := hostsFromTemplate.Get(name)
+	if err != nil {
+		log.Print("failed to read store: ", err)
+		return
+	}
+
+	if !found {
+		log.Print("no host from template named ", name)
+		return
+	}
+
+	ht := cfg.HostTemplate(hft.Template)
+	if ht == nil {
+		log.Print("no host template named ", name)
+		return
+	}
+
+	host = &localconfig.Host{}
+	*host = *ht
+	host.Name = name
+	host.IPs = []string{hft.IP}
+	return
+}
+
+func wsHostsFromTemplateSet(req *restful.Request, resp *restful.Response) {
+	name := req.PathParameter("name")
+
+	cfg, err := readConfig()
+	if err != nil {
+		wsError(resp, err)
+		return
+	}
+
+	v := HostFromTemplate{}
+	if err := req.ReadEntity(&v); err != nil {
+		wsBadRequest(resp, err.Error())
+		return
+	}
+
+	if v.Template == "" {
+		wsBadRequest(resp, "template is required")
+		return
+	}
+	if v.IP == "" {
+		wsBadRequest(resp, "ip is required")
+		return
+	}
+
+	found := false
+	for _, ht := range cfg.HostTemplates {
+		if ht.Name != v.Template {
+			continue
+		}
+		found = true
+		break
+	}
+
+	if !found {
+		wsBadRequest(resp, "no host template with this name")
+		return
+	}
+
+	if err := hostsFromTemplate.Put(name, v); err != nil {
+		wsError(resp, err)
+		return
+	}
+
+	updateState()
+}
+
+func wsHostsFromTemplateDelete(req *restful.Request, resp *restful.Response) {
+	name := req.PathParameter("name")
+	hostsFromTemplate.WsDel(req, resp, name)
+	updateState()
+}