host templates in localconfig

localconfig/localconfig.go

@@ -2,16 +2,17 @@ package localconfig
 
 import (
 	"io"
-	"io/ioutil"
+	"os"
 	"strings"
 
 	yaml "gopkg.in/yaml.v2"
 )
 
 type Config struct {
-	Clusters  []*Cluster
-	Hosts     []*Host
-	SSLConfig string
+	Clusters      []*Cluster
+	Hosts         []*Host
+	HostTemplates []*Host
+	SSLConfig     string
 }
 
 type Cluster struct {
@@ -29,7 +30,7 @@ func FromBytes(data []byte) (*Config, error) {
 }
 
 func FromFile(path string) (*Config, error) {
-	ba, err := ioutil.ReadFile(path)
+	ba, err := os.ReadFile(path)
 	if err != nil {
 		return nil, err
 	}
@@ -68,6 +69,15 @@ func (c *Config) Host(name string) *Host {
 	return nil
 }
 
+func (c *Config) HostTemplate(name string) *Host {
+	for _, host := range c.HostTemplates {
+		if host.Name == name {
+			return host
+		}
+	}
+	return nil
+}
+
 func (c *Config) HostByIP(ip string) *Host {
 	for _, host := range c.Hosts {
 		for _, hostIP := range host.IPs {