wehub-resource-sync
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98 lines
2.8 KiB
Go
98 lines
2.8 KiB
Go
package message
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import (
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"fmt"
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"github.com/cockroachdb/errors"
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"github.com/milvus-io/milvus-proto/go-api/v3/commonpb"
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"github.com/milvus-io/milvus/pkg/v3/util/typeutil"
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)
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var (
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// messageIDUnmarshaler is the map for message id unmarshaler.
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messageIDUnmarshaler typeutil.ConcurrentMap[WALName, MessageIDUnmarshaler]
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ErrInvalidMessageID = errors.New("invalid message id")
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)
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// RegisterMessageIDUnmsarshaler register the message id unmarshaler.
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func RegisterMessageIDUnmsarshaler(walName WALName, unmarshaler MessageIDUnmarshaler) {
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_, loaded := messageIDUnmarshaler.GetOrInsert(walName, unmarshaler)
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if loaded {
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panic("MessageID Unmarshaler already registered: " + walName.String())
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}
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}
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// MessageIDUnmarshaler is the unmarshaler for message id.
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type MessageIDUnmarshaler = func(b string) (MessageID, error)
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// MustMarshalMessageID marshal the message id, panic if failed.
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func MustMarshalMessageID(msgID MessageID) *commonpb.MessageID {
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if msgID == nil {
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return nil
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}
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return msgID.IntoProto()
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}
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// MustUnmarshalMessageID unmarshal the message id, panic if failed.
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func MustUnmarshalMessageID(msgID *commonpb.MessageID) MessageID {
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if msgID == nil {
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return nil
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}
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id, err := UnmarshalMessageID(msgID)
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if err != nil {
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panic(fmt.Sprintf("unmarshal message id failed: %s, wal: %s, bytes: %s", err.Error(), msgID.WALName.String(), msgID.Id))
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}
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return id
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}
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// UnmsarshalMessageID unmarshal the message id.
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func UnmarshalMessageID(msgID *commonpb.MessageID) (MessageID, error) {
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if msgID == nil {
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return nil, errors.Wrap(ErrInvalidMessageID, "nil message id")
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}
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// wal_name is a client-controlled proto enum; proto3 allows any int32 on the
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// wire. Return errors instead of panicking so a malformed value cannot crash
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// the process. MustUnmarshalMessageID keeps the panic contract for trusted
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// internal callers.
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name := WALName(msgID.WALName)
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if name == WALNameUnknown {
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// Use the non-panicking lookup: an unregistered default WAL must not
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// nil-deref on client input.
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name = GetDefaultWALName()
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if name == WALNameUnknown {
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return nil, errors.Wrapf(ErrInvalidMessageID, "default wal name is not registered, wal: %s", msgID.WALName.String())
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}
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}
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unmarshaler, ok := messageIDUnmarshaler.Get(name)
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if !ok {
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return nil, errors.Wrapf(ErrInvalidMessageID, "message id unmarshaler not registered for wal: %s", msgID.WALName.String())
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}
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return unmarshaler(msgID.Id)
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}
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// MessageID is the interface for message id.
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type MessageID interface {
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// WALName returns the name of message id related wal.
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WALName() WALName
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// LT less than.
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LT(MessageID) bool
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// LTE less than or equal to.
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LTE(MessageID) bool
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// EQ Equal to.
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EQ(MessageID) bool
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// Marshal marshal the message id.
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Marshal() string
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// IntoProto marshal the message id to proto.
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IntoProto() *commonpb.MessageID
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// Convert into string for logging.
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String() string
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}
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