add(system): resource type and encoding

system/types/resource.go

@@ -0,0 +1,39 @@
+package types
+
+import (
+	"fmt"
+
+	"encoding/json"
+)
+
+type Resource struct {
+	ID    uint64 `json:"id,string"`
+	Name  string `json:"name"`
+	Scope string `json:"scope"`
+}
+
+type ResourceJSON struct {
+	ID         uint64 `json:"id,string"`
+	Name       string `json:"name"`
+	Scope      string `json:"scope"`
+	ResourceID string `json:"resource"`
+}
+
+func (r Resource) String() string {
+	return fmt.Sprintf("%s:%d", r.Scope, r.ID)
+}
+
+func (r Resource) All() string {
+	return fmt.Sprintf("%s:*", r.Scope)
+}
+
+func (r Resource) MarshalJSON() ([]byte, error) {
+	return json.Marshal(ResourceJSON{
+		r.ID,
+		r.Name,
+		r.Scope,
+		r.String(),
+	})
+}
+
+var _ fmt.Stringer = Resource{}

system/types/resource_test.go

@@ -0,0 +1,33 @@
+package types
+
+import (
+	"fmt"
+	"testing"
+
+	"encoding/json"
+
+	"github.com/crusttech/crust/internal/test"
+)
+
+func TestResource(t *testing.T) {
+	var (
+		assert = test.Assert
+	)
+	r := Resource{123, "Test name", "team"}
+	assert(t, r.String() == "team:123", "Resource ID doesn't match, team:123 != '%s'", r.String())
+
+	b, _ := json.Marshal(r)
+	fmt.Println(string(b))
+
+	{
+		r := ResourceJSON{}
+		json.Unmarshal(b, &r)
+		assert(t, r.ResourceID == "team:123", "Decoded full-json resource ID doesn't match, team:123 != '%s'", r.ResourceID)
+	}
+
+	{
+		r := Resource{}
+		json.Unmarshal(b, &r)
+		assert(t, r.String() == "team:123", "Decoded full-json resource ID doesn't match, team:123 != '%s'", r.String())
+	}
+}