Optimize branch protection rule loading (#32280)

before if it was nonglob each load would try to glob it and the check
that is not glob ... now we only do that once and no future loading will
trigger it

---
*Sponsored by Kithara Software GmbH*

(cherry picked from commit 5d43801b72790ce5862aefdc4520edb06bb4cbba)

models/git/protected_branch.go

@@ -79,14 +79,20 @@ func IsRuleNameSpecial(ruleName string) bool {
 }
 
 func (protectBranch *ProtectedBranch) loadGlob() {
-	if protectBranch.globRule == nil {
-		var err error
-		protectBranch.globRule, err = glob.Compile(protectBranch.RuleName, '/')
-		if err != nil {
-			log.Warn("Invalid glob rule for ProtectedBranch[%d]: %s %v", protectBranch.ID, protectBranch.RuleName, err)
-			protectBranch.globRule = glob.MustCompile(glob.QuoteMeta(protectBranch.RuleName), '/')
-		}
-		protectBranch.isPlainName = !IsRuleNameSpecial(protectBranch.RuleName)
+	if protectBranch.isPlainName || protectBranch.globRule != nil {
+		return
+	}
+	// detect if it is not glob
+	if !IsRuleNameSpecial(protectBranch.RuleName) {
+		protectBranch.isPlainName = true
+		return
+	}
+	// now we load the glob
+	var err error
+	protectBranch.globRule, err = glob.Compile(protectBranch.RuleName, '/')
+	if err != nil {
+		log.Warn("Invalid glob rule for ProtectedBranch[%d]: %s %v", protectBranch.ID, protectBranch.RuleName, err)
+		protectBranch.globRule = glob.MustCompile(glob.QuoteMeta(protectBranch.RuleName), '/')
 	}
 }
 

models/git/protected_branch_list_test.go

@@ -75,3 +75,32 @@ func TestBranchRuleMatchPriority(t *testing.T) {
 		}
 	}
 }
+
+func TestBranchRuleSort(t *testing.T) {
+	in := []*ProtectedBranch{{
+		RuleName:    "b",
+		CreatedUnix: 1,
+	}, {
+		RuleName:    "b/*",
+		CreatedUnix: 3,
+	}, {
+		RuleName:    "a/*",
+		CreatedUnix: 2,
+	}, {
+		RuleName:    "c",
+		CreatedUnix: 0,
+	}, {
+		RuleName:    "a",
+		CreatedUnix: 4,
+	}}
+	expect := []string{"c", "b", "a", "a/*", "b/*"}
+
+	pbr := ProtectedBranchRules(in)
+	pbr.sort()
+
+	var got []string
+	for i := range pbr {
+		got = append(got, pbr[i].RuleName)
+	}
+	assert.Equal(t, expect, got)
+}