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Signed-off-by: Cenk Alti <cenkalti@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| package snapshot | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "path/filepath" | ||
| "strconv" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| "go.uber.org/zap" | ||
|
|
||
| "go.etcd.io/bbolt" | ||
| "go.etcd.io/etcd/api/v3/etcdserverpb" | ||
| "go.etcd.io/etcd/server/v3/embed" | ||
| "go.etcd.io/etcd/server/v3/etcdserver" | ||
| "go.etcd.io/etcd/server/v3/storage/mvcc" | ||
| ) | ||
|
|
||
| // TestSnapshotStatus is the happy case. | ||
| // It inserts pre-defined number of keys and asserts the output hash of status command. | ||
| // The expected hash value must not be changed. | ||
| // If it changes, there must be some backwards incompatible change introduced. | ||
| func TestSnapshotStatus(t *testing.T) { | ||
| dbpath := createDB(t, insertKeys(t, 10, 100)) | ||
|
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| status, err := NewV3(zap.NewNop()).Status(dbpath) | ||
| require.NoError(t, err) | ||
|
|
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| assert.Equal(t, uint32(0x62132b4d), status.Hash) | ||
| assert.Equal(t, int64(11), status.Revision) | ||
| } | ||
|
|
||
| // TestSnapshotStatusCorruptRevision tests if snapshot status command fails when there is an unexpected revision in "key" bucket. | ||
| func TestSnapshotStatusCorruptRevision(t *testing.T) { | ||
| dbpath := createDB(t, insertKeys(t, 1, 0)) | ||
|
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| db, err := bbolt.Open(dbpath, 0666, nil) | ||
| require.NoError(t, err) | ||
| defer db.Close() | ||
|
|
||
| err = db.Update(func(tx *bbolt.Tx) error { | ||
| b := tx.Bucket([]byte("key")) | ||
| if b == nil { | ||
| return errors.New("key bucket not found") | ||
| } | ||
| return b.Put([]byte("0"), []byte{}) | ||
| }) | ||
| require.NoError(t, err) | ||
| db.Close() | ||
|
|
||
| _, err = NewV3(zap.NewNop()).Status(dbpath) | ||
| require.Error(t, err) | ||
| } | ||
|
|
||
| // TestSnapshotStatusNegativeRevisionMain tests if snapshot status command fails when main revision number is negative. | ||
| func TestSnapshotStatusNegativeRevisionMain(t *testing.T) { | ||
| dbpath := createDB(t, insertKeys(t, 1, 0)) | ||
|
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| db, err := bbolt.Open(dbpath, 0666, nil) | ||
| require.NoError(t, err) | ||
| defer db.Close() | ||
|
|
||
| err = db.Update(func(tx *bbolt.Tx) error { | ||
| b := tx.Bucket([]byte("key")) | ||
| if b == nil { | ||
| return errors.New("key bucket not found") | ||
| } | ||
| bytes := make([]byte, 17) // 2 int64 and a separator | ||
| mvcc.RevToBytes(mvcc.Revision{Main: -2}, bytes) // -1 is allowed for main rev | ||
| return b.Put(bytes, []byte{}) | ||
| }) | ||
| require.NoError(t, err) | ||
| db.Close() | ||
|
|
||
| _, err = NewV3(zap.NewNop()).Status(dbpath) | ||
| require.Error(t, err) | ||
| } | ||
|
|
||
| // TestSnapshotStatusNegativeRevisionSub tests if snapshot status command fails when sub revision number is negative. | ||
| func TestSnapshotStatusNegativeRevisionSub(t *testing.T) { | ||
| dbpath := createDB(t, insertKeys(t, 1, 0)) | ||
|
|
||
| db, err := bbolt.Open(dbpath, 0666, nil) | ||
| require.NoError(t, err) | ||
| defer db.Close() | ||
|
|
||
| err = db.Update(func(tx *bbolt.Tx) error { | ||
| b := tx.Bucket([]byte("key")) | ||
| if b == nil { | ||
| return errors.New("key bucket not found") | ||
| } | ||
| bytes := make([]byte, 17) // 2 int64 and a separator | ||
| mvcc.RevToBytes(mvcc.Revision{Sub: -1}, bytes) | ||
| return b.Put(bytes, []byte{}) | ||
| }) | ||
| require.NoError(t, err) | ||
| db.Close() | ||
|
|
||
| _, err = NewV3(zap.NewNop()).Status(dbpath) | ||
| require.Error(t, err) | ||
| } | ||
|
|
||
| // insertKeys insert `numKeys` number of keys of `valueSize` size into a running etcd server. | ||
| func insertKeys(t *testing.T, numKeys, valueSize int) func(*etcdserver.EtcdServer) { | ||
| t.Helper() | ||
| return func(srv *etcdserver.EtcdServer) { | ||
| val := make([]byte, valueSize) | ||
| for i := 0; i < numKeys; i++ { | ||
| req := etcdserverpb.PutRequest{ | ||
| Key: []byte(strconv.Itoa(i)), | ||
| Value: val, | ||
| } | ||
| _, err := srv.Put(context.TODO(), &req) | ||
| require.NoError(t, err) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // createDB creates a bbolt database file by running an embedded etcd server. | ||
| // While the server is running, `generateContent` function is called to insert values. | ||
| // It returns the path of bbolt database. | ||
| func createDB(t *testing.T, generateContent func(*etcdserver.EtcdServer)) string { | ||
| t.Helper() | ||
|
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| cfg := embed.NewConfig() | ||
| cfg.LogLevel = "fatal" | ||
| cfg.Dir = t.TempDir() | ||
|
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| etcd, err := embed.StartEtcd(cfg) | ||
| require.NoError(t, err) | ||
| defer etcd.Close() | ||
|
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| select { | ||
| case <-etcd.Server.ReadyNotify(): | ||
| case <-time.After(10 * time.Second): | ||
| t.FailNow() | ||
| } | ||
|
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| generateContent(etcd.Server) | ||
|
|
||
| return filepath.Join(cfg.Dir, "member", "snap", "db") | ||
| } |
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