func toCache(root, node, id string, content []byte,
mods *service.CacheMods) error {
// Write deps to filesystem.
thisDep := service.CacheDep{Node: node, Cache: id}
if mods != nil {
for _, dep := range mods.Deps {
err := appendRdeps(root, dep, []service.CacheDep{thisDep})
if err != nil {
return fmt.Errorf("Could not write rdeps: %v", err)
}
}
}
// Write cache to filesystem.
nodePath := filepath.Join(root, node[1:])
path := filepath.Join(nodePath, ".data", filepath.Base(id))
if err := os.MkdirAll(filepath.Dir(path), 0770); err != nil {
return fmt.Errorf("Could not create node cache directory: %v", err)
}
if mods != nil {
mods.Deps = nil
}
var raw bytes.Buffer
enc := gob.NewEncoder(&raw)
data := cacheData{Data: content, CacheMods: mods}
if err := enc.Encode(&data); err != nil {
return fmt.Errorf("Could not encode cache data: %v", err)
}
if err := ioutil.WriteFile(path, raw.Bytes(), 0660); err != nil {
return fmt.Errorf("Could not write node cache: %v", err)
}
return nil
}
