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Merge pull request #14178 from lavacat/release-3.5-txn-panic
[3.5] server: don't panic in readonly serializable txn
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,96 @@ | ||
package etcdserver | ||
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import ( | ||
"context" | ||
"strings" | ||
"sync" | ||
"testing" | ||
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"github.com/stretchr/testify/assert" | ||
"go.uber.org/zap" | ||
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pb "go.etcd.io/etcd/api/v3/etcdserverpb" | ||
"go.etcd.io/etcd/server/v3/lease" | ||
"go.etcd.io/etcd/server/v3/mvcc" | ||
betesting "go.etcd.io/etcd/server/v3/mvcc/backend/testing" | ||
) | ||
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func TestReadonlyTxnError(t *testing.T) { | ||
b, _ := betesting.NewDefaultTmpBackend(t) | ||
defer betesting.Close(t, b) | ||
s := mvcc.New(zap.NewExample(), b, &lease.FakeLessor{}, mvcc.StoreConfig{}) | ||
defer s.Close() | ||
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// setup minimal server to get access to applier | ||
srv := &EtcdServer{lgMu: new(sync.RWMutex), lg: zap.NewExample(), r: *newRaftNode(raftNodeConfig{lg: zap.NewExample(), Node: newNodeRecorder()})} | ||
srv.kv = s | ||
srv.be = b | ||
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a := srv.newApplierV3Backend() | ||
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// setup cancelled context | ||
ctx, cancel := context.WithCancel(context.TODO()) | ||
cancel() | ||
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// put some data to prevent early termination in rangeKeys | ||
// we are expecting failure on cancelled context check | ||
s.Put([]byte("foo"), []byte("bar"), lease.NoLease) | ||
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txn := &pb.TxnRequest{ | ||
Success: []*pb.RequestOp{ | ||
{ | ||
Request: &pb.RequestOp_RequestRange{ | ||
RequestRange: &pb.RangeRequest{ | ||
Key: []byte("foo"), | ||
}, | ||
}, | ||
}, | ||
}, | ||
} | ||
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_, _, err := a.Txn(ctx, txn) | ||
if err == nil || !strings.Contains(err.Error(), "applyTxn: failed Range: rangeKeys: context cancelled: context canceled") { | ||
t.Fatalf("Expected context canceled error, got %v", err) | ||
} | ||
} | ||
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func TestWriteTxnPanic(t *testing.T) { | ||
b, _ := betesting.NewDefaultTmpBackend(t) | ||
defer betesting.Close(t, b) | ||
s := mvcc.New(zap.NewExample(), b, &lease.FakeLessor{}, mvcc.StoreConfig{}) | ||
defer s.Close() | ||
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// setup minimal server to get access to applier | ||
srv := &EtcdServer{lgMu: new(sync.RWMutex), lg: zap.NewExample(), r: *newRaftNode(raftNodeConfig{lg: zap.NewExample(), Node: newNodeRecorder()})} | ||
srv.kv = s | ||
srv.be = b | ||
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a := srv.newApplierV3Backend() | ||
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// setup cancelled context | ||
ctx, cancel := context.WithCancel(context.TODO()) | ||
cancel() | ||
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// write txn that puts some data and then fails in range due to cancelled context | ||
txn := &pb.TxnRequest{ | ||
Success: []*pb.RequestOp{ | ||
{ | ||
Request: &pb.RequestOp_RequestPut{ | ||
RequestPut: &pb.PutRequest{ | ||
Key: []byte("foo"), | ||
Value: []byte("bar"), | ||
}, | ||
}, | ||
}, | ||
{ | ||
Request: &pb.RequestOp_RequestRange{ | ||
RequestRange: &pb.RangeRequest{ | ||
Key: []byte("foo"), | ||
}, | ||
}, | ||
}, | ||
}, | ||
} | ||
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assert.Panics(t, func() { a.Txn(ctx, txn) }, "Expected panic in Txn with writes") | ||
} |
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