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refactor(utils): add hasher pkg and add more uts for toml
Signed-off-by: liubo02 <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package hasher | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "hash/fnv" | ||
|
|
||
| "github.com/pelletier/go-toml/v2" | ||
| "k8s.io/apimachinery/pkg/util/rand" | ||
|
|
||
| "github.com/pingcap/tidb-operator/apis/core/v1alpha1" | ||
| hashutil "github.com/pingcap/tidb-operator/third_party/kubernetes/pkg/util/hash" | ||
| ) | ||
|
|
||
| // GenerateHash takes a TOML string as input, unmarshals it into a map, | ||
| // and generates a hash of the resulting configuration. The hash is then | ||
| // encoded into a safe string format and returned. | ||
| // If the order of keys in the TOML string is different, the hash will be the same. | ||
| func GenerateHash(tomlStr v1alpha1.ConfigFile) (string, error) { | ||
| var config map[string]any | ||
| if err := toml.NewDecoder(bytes.NewReader([]byte(tomlStr))).Decode(&config); err != nil { | ||
| return "", fmt.Errorf("failed to unmarshal toml string %s: %w", tomlStr, err) | ||
| } | ||
| hasher := fnv.New32a() | ||
| hashutil.DeepHashObject(hasher, config) | ||
| return rand.SafeEncodeString(fmt.Sprint(hasher.Sum32())), nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| package hasher | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
|
|
||
| "github.com/pingcap/tidb-operator/apis/core/v1alpha1" | ||
| ) | ||
|
|
||
| func TestGenerateHash(t *testing.T) { | ||
| tests := []struct { | ||
| name string | ||
| tomlStr v1alpha1.ConfigFile | ||
| semanticallyEquivalentStr v1alpha1.ConfigFile | ||
| wantHash string | ||
| wantError bool | ||
| }{ | ||
| { | ||
| name: "Valid TOML string", | ||
| tomlStr: v1alpha1.ConfigFile(`foo = 'bar' | ||
| [log] | ||
| k1 = 'v1' | ||
| k2 = 'v2'`), | ||
| semanticallyEquivalentStr: v1alpha1.ConfigFile(`foo = 'bar' | ||
| [log] | ||
| k2 = 'v2' | ||
| k1 = 'v1'`), | ||
| wantHash: "5dbbcf4574", | ||
| wantError: false, | ||
| }, | ||
| { | ||
| name: "Different config value", | ||
| tomlStr: v1alpha1.ConfigFile(`foo = 'foo' | ||
| [log] | ||
| k2 = 'v2' | ||
| k1 = 'v1'`), | ||
| wantHash: "f5bc46cb9", | ||
| wantError: false, | ||
| }, | ||
| { | ||
| name: "multiple sections with blank line", | ||
| tomlStr: v1alpha1.ConfigFile(`[a] | ||
| k1 = 'v1' | ||
| [b] | ||
| k2 = 'v2'`), | ||
| semanticallyEquivalentStr: v1alpha1.ConfigFile(`[a] | ||
| k1 = 'v1' | ||
| [b] | ||
| k2 = 'v2'`), | ||
| wantHash: "79598d5977", | ||
| wantError: false, | ||
| }, | ||
| { | ||
| name: "Empty TOML string", | ||
| tomlStr: v1alpha1.ConfigFile(``), | ||
| wantHash: "7d6fc488b7", | ||
| wantError: false, | ||
| }, | ||
| { | ||
| name: "Invalid TOML string", | ||
| tomlStr: v1alpha1.ConfigFile(`key1 = "value1" | ||
| key2 = value2`), // Missing quotes around value2 | ||
| wantHash: "", | ||
| wantError: true, | ||
| }, | ||
| { | ||
| name: "Nested tables", | ||
| tomlStr: v1alpha1.ConfigFile(`[parent] | ||
| child1 = "value1" | ||
| child2 = "value2" | ||
| [parent.child] | ||
| grandchild1 = "value3" | ||
| grandchild2 = "value4"`), | ||
| semanticallyEquivalentStr: v1alpha1.ConfigFile(`[parent] | ||
| child2 = "value2" | ||
| child1 = "value1" | ||
| [parent.child] | ||
| grandchild2 = "value4" | ||
| grandchild1 = "value3"`), | ||
| wantHash: "7bf645ccb4", | ||
| wantError: false, | ||
| }, | ||
| { | ||
| name: "Array of tables", | ||
| tomlStr: v1alpha1.ConfigFile(`[[products]] | ||
| name = "Hammer" | ||
| sku = 738594937 | ||
| [[products]] | ||
| name = "Nail" | ||
| sku = 284758393 | ||
| color = "gray"`), | ||
| semanticallyEquivalentStr: v1alpha1.ConfigFile(`[[products]] | ||
| sku = 738594937 | ||
| name = "Hammer" | ||
| [[products]] | ||
| sku = 284758393 | ||
| name = "Nail" | ||
| color = "gray"`), | ||
| wantHash: "7549cf87f4", | ||
| wantError: false, | ||
| }, | ||
| } | ||
|
|
||
| for _, tt := range tests { | ||
| t.Run(tt.name, func(t *testing.T) { | ||
| gotHash, err := GenerateHash(tt.tomlStr) | ||
| if tt.wantError { | ||
| assert.Error(t, err) | ||
| } else { | ||
| require.NoError(t, err) | ||
| assert.Equal(t, tt.wantHash, gotHash) | ||
|
|
||
| if string(tt.semanticallyEquivalentStr) != "" { | ||
| reorderedHash, err := GenerateHash(tt.semanticallyEquivalentStr) | ||
| require.NoError(t, err) | ||
| assert.Equal(t, tt.wantHash, reorderedHash) | ||
| } | ||
| } | ||
| }) | ||
| } | ||
| } |
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