Add the runnable Gitea, PostgreSQL, and Hop control-plane foundation

Hop-State: A_06FN3QYA1N56NQYGZ81DWGR
Hop-Proposal: R_06FN3QXJRYPPEQZQA6S69QG
Hop-Task: T_06FN3MVGY3MT82ESQ89BND0
Hop-Attempt: AT_06FN3MVGY092BFA5MR9C7EG

services/control-plane/internal/ids/ids.go

@@ -0,0 +1,24 @@
+package ids
+
+import (
+	"crypto/rand"
+	"encoding/base32"
+	"time"
+)
+
+var encoding = base32.NewEncoding("0123456789ABCDEFGHJKMNPQRSTVWXYZ").WithPadding(base32.NoPadding)
+
+func Repository() (string, error) {
+	value := make([]byte, 16)
+	milliseconds := uint64(time.Now().UnixMilli())
+	value[0] = byte(milliseconds >> 40)
+	value[1] = byte(milliseconds >> 32)
+	value[2] = byte(milliseconds >> 24)
+	value[3] = byte(milliseconds >> 16)
+	value[4] = byte(milliseconds >> 8)
+	value[5] = byte(milliseconds)
+	if _, err := rand.Read(value[6:]); err != nil {
+		return "", err
+	}
+	return "RP_" + encoding.EncodeToString(value), nil
+}

services/control-plane/internal/ids/ids_test.go

@@ -0,0 +1,23 @@
+package ids
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestRepository(t *testing.T) {
+	first, err := Repository()
+	if err != nil {
+		t.Fatal(err)
+	}
+	second, err := Repository()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !strings.HasPrefix(first, "RP_") || len(first) != 29 {
+		t.Fatalf("unexpected repository ID %q", first)
+	}
+	if first == second {
+		t.Fatal("generated duplicate IDs")
+	}
+}