feat(workflows): adds workflow name normalizer (#980)

pkg/workflows/utils.go

@@ -72,3 +72,15 @@ func GenerateWorkflowID(owner []byte, name string, workflow []byte, config []byt
 
 	return sha, nil
 }
+
+// HashTruncateName returns the SHA-256 hash of the workflow name truncated to the first 10 bytes.
+func HashTruncateName(name string) [10]byte {
+	// Compute SHA-256 hash of the input string
+	hash := sha256.Sum256([]byte(name))
+
+	// Truncate the hash to 10 bytes
+	var result [10]byte
+	copy(result[:], hash[:10])
+
+	return result
+}

pkg/workflows/utils_test.go

@@ -66,3 +66,36 @@ func Test_GenerateWorkflowIDFromStrings(t *testing.T) {
 	_, err = GenerateWorkflowIDFromStrings(owner, "porporpore", []byte("workflow"), []byte("config"), "http://mysecrets.com")
 	assert.ErrorContains(t, err, "encoding/hex")
 }
+
+func TestNormalizeWorkflowName(t *testing.T) {
+	tt := []struct {
+		input    string
+		expected [10]byte
+	}{
+		{
+			input:    "Hello, world!",
+			expected: [10]byte{0x31, 0x5f, 0x5b, 0xdb, 0x76, 0xd0, 0x78, 0xc4, 0x3b, 0x8a},
+		},
+		{
+			input:    "My Incredible Workflow Name",
+			expected: [10]byte{0x84, 0x00, 0x2e, 0xb9, 0xe2, 0xa0, 0x6b, 0x09, 0x97, 0x7c},
+		},
+		{
+			input:    "You either die a hero, or live long enough to see yourself become the villain.",
+			expected: [10]byte{0x6b, 0xa1, 0xf7, 0xa6, 0xa0, 0x91, 0x95, 0x1a, 0x2d, 0xd2},
+		},
+	}
+
+	for _, tc := range tt {
+		t.Run(tc.input, func(t *testing.T) {
+			// Call the function with the test input
+			result := HashTruncateName(tc.input)
+
+			// Assert that the result is exactly the expected output
+			require.Equal(t, tc.expected, result)
+
+			// Assert that the result is 10 bytes long
+			require.Len(t, result, 10)
+		})
+	}
+}