simple in-memory storage working for POST/GET

storage.go

@@ -0,0 +1,45 @@
+package vain
+
+import (
+	"errors"
+	"sync"
+)
+
+type MemStore struct {
+	l sync.RWMutex
+	p map[string]Package
+}
+
+func NewMemStore() *MemStore {
+	return &MemStore{
+		p: make(map[string]Package),
+	}
+}
+
+func (ms MemStore) Add(p Package) error {
+	ms.l.Lock()
+	ms.p[p.Path] = p
+	ms.l.Unlock()
+	return nil
+}
+
+func (ms MemStore) Remove(path string) error {
+	ms.l.Lock()
+	delete(ms.p, path)
+	ms.l.Unlock()
+	return nil
+}
+
+func (ms MemStore) Save() error {
+	return errors.New("save is not implemented")
+}
+
+func (ms MemStore) All() []Package {
+	r := []Package{}
+	ms.l.RLock()
+	for _, p := range ms.p {
+		r = append(r, p)
+	}
+	ms.l.RUnlock()
+	return r
+}