cmd/juju: working bootstrap and destroy commands

state/util.go

 // launchpad.net/juju/state
 //
 // Copyright (c) 2011-2012 Canonical Ltd.
 
 package state
 
 import (
         "errors"
         "fmt"
         "launchpad.net/goyaml"
@@ skipping 62 matching lines @@
         c := &ConfigNode{
                 zk:            zk,
                 path:          path,
                 pristineCache: make(map[string]interface{}),
                 cache:         copyCache(values),
         }
         _, err := c.Write()
         if err != nil {
                 return nil, err
         }
+        return c, nil
+}
+
+// parseConfigNode creates a config node based on a pre-read content.
+func parseConfigNode(zk *zookeeper.Conn, path, content string) (*ConfigNode, error) {
+        c := &ConfigNode{
+                zk:   zk,
+                path: path,
+        }
+        if err := goyaml.Unmarshal([]byte(content), &c.cache); err != nil {
+                return nil, err
+        }
+        c.pristineCache = copyCache(c.cache)
         return c, nil
 }
 
 // readConfigNode returns the ConfigNode for path.
 func readConfigNode(zk *zookeeper.Conn, path string) (*ConfigNode, error) {
         c := &ConfigNode{
                 zk:   zk,
                 path: path,
         }
         if err := c.Read(); err != nil {
@@ skipping 192 matching lines @@
                         b >= '0' && b <= '9',
                         b == '.',
                         b == '-':
                         safe = append(safe, b)
                 default:
                         safe = append(safe, fmt.Sprintf("_%02x_", b)...)
                 }
         }
         return string(safe)
 }