参见timestamppb中的New和Timestamp.AsTime
支持time.Time和Timestamp之间的转换

下面的代码将给予转换时间。时间到protobuf timestamppb格式

import "google.golang.org/protobuf/types/known/timestamppb"
timeNow := time.Now()
timestamp := timestamppb.Timestamp{
    Seconds: timeNow.Unix(),
    Nanos:   int32(timeNow.Nanosecond()),
}
fmt.Printf("as timestamp %+v\n", timestamp)
fmt.Printf("as time.Time %+v\n", timestamp.AsTime().Local())

输出如下所示：

as timestamp {state:{NoUnkeyedLiterals:{} DoNotCompare:[] DoNotCopy:[] atomicMessageInfo:<nil>} sizeCache:0 unknownFields:[] Seconds:1694773177 Nanos:777135000}
as time.Time 2023-09-15 15:49:37.777135 +0530 IST