// Get retrieves the item from etcd's key/value store and then populates obj with its data.
func (c *Client) Get(obj db.Entity) error {
if obj.Hooks().PreGet != nil {
if err := obj.Hooks().PreGet(c, obj); err != nil {
return errors.EtcdToErrored(err)
}
}
path, err := obj.Path()
if err != nil {
return err
}
resp, err := c.client.Get(context.Background(), c.qualified(path), nil)
if err != nil {
return errors.EtcdToErrored(err)
}
if err := jsonio.Read(obj, []byte(resp.Node.Value)); err != nil {
return err
}
if err := obj.SetKey(c.trimPath(resp.Node.Key)); err != nil {
return err
}
if obj.Hooks().PostGet != nil {
if err := obj.Hooks().PostGet(c, obj); err != nil {
return errors.EtcdToErrored(err)
}
}
return obj.Validate()
}
// Set takes the object and commits it to the database.
func (c *Client) Set(obj db.Entity) error {
if err := obj.Validate(); err != nil {
return err
}
if obj.Hooks().PreSet != nil {
if err := obj.Hooks().PreSet(c, obj); err != nil {
return errors.EtcdToErrored(err)
}
}
content, err := jsonio.Write(obj)
if err != nil {
return err
}
path, err := obj.Path()
if err != nil {
return err
}
if _, err := c.client.Set(context.Background(), c.qualified(path), string(content), nil); err != nil {
return errors.EtcdToErrored(err)
}
if obj.Hooks().PostSet != nil {
if err := obj.Hooks().PostSet(c, obj); err != nil {
return errors.EtcdToErrored(err)
}
}
return nil
}
// Delete removes the object from the store.
func (c *Client) Delete(obj db.Entity) error {
if obj.Hooks().PreDelete != nil {
if err := obj.Hooks().PreDelete(c, obj); err != nil {
return errors.EtcdToErrored(err)
}
}
path, err := obj.Path()
if err != nil {
return err
}
if _, err := c.client.Delete(context.Background(), c.qualified(path), nil); err != nil {
return errors.EtcdToErrored(err)
}
if obj.Hooks().PostDelete != nil {
if err := obj.Hooks().PostDelete(c, obj); err != nil {
return errors.EtcdToErrored(err)
}
}
return nil
}