var File_google_protobuf_timestamp_protoprotoreflect.FileDescriptor

typeTimestamp¶

type Timestamp struct {// Represents seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z. Must// be between -315576000000 and 315576000000 inclusive (which corresponds to// 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z).Secondsint64 `protobuf:"varint,1,opt,name=seconds,proto3" json:"seconds,omitempty"`// Non-negative fractions of a second at nanosecond resolution. This field is// the nanosecond portion of the duration, not an alternative to seconds.// Negative second values with fractions must still have non-negative nanos// values that count forward in time. Must be between 0 and 999,999,999// inclusive.Nanosint32 `protobuf:"varint,2,opt,name=nanos,proto3" json:"nanos,omitempty"`// contains filtered or unexported fields}

A Timestamp represents a point in time independent of any time zone or localcalendar, encoded as a count of seconds and fractions of seconds atnanosecond resolution. The count is relative to an epoch at UTC midnight onJanuary 1, 1970, in the proleptic Gregorian calendar which extends theGregorian calendar backwards to year one.

All minutes are 60 seconds long. Leap seconds are "smeared" so that no leapsecond table is needed for interpretation, using a [24-hour linearsmear](https://developers.google.com/time/smear).

The range is from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z. Byrestricting to that range, we ensure that we can convert to and from [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) date strings.

Examples¶

Example 1: Compute Timestamp from POSIX `time()`.

Timestamp timestamp;timestamp.set_seconds(time(NULL));timestamp.set_nanos(0);

Example 2: Compute Timestamp from POSIX `gettimeofday()`.

struct timeval tv;gettimeofday(&tv, NULL);Timestamp timestamp;timestamp.set_seconds(tv.tv_sec);timestamp.set_nanos(tv.tv_usec * 1000);

Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`.

FILETIME ft;GetSystemTimeAsFileTime(&ft);UINT64 ticks = (((UINT64)ft.dwHighDateTime) << 32) | ft.dwLowDateTime;// A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z// is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z.Timestamp timestamp;timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL));timestamp.set_nanos((INT32) ((ticks % 10000000) * 100));

Example 4: Compute Timestamp from Java `System.currentTimeMillis()`.

long millis = System.currentTimeMillis();Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000)    .setNanos((int) ((millis % 1000) * 1000000)).build();

Example 5: Compute Timestamp from Java `Instant.now()`.

Instant now = Instant.now();Timestamp timestamp =    Timestamp.newBuilder().setSeconds(now.getEpochSecond())        .setNanos(now.getNano()).build();

Example 6: Compute Timestamp from current time in Python.

timestamp = Timestamp()timestamp.GetCurrentTime()

JSON Mapping¶

In JSON format, the Timestamp type is encoded as a string in the[RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format. That is, theformat is "{year}-{month}-{day}T{hour}:{min}:{sec}[.{frac_sec}]Z"where {year} is always expressed using four digits while {month}, {day},{hour}, {min}, and {sec} are zero-padded to two digits each. The fractionalseconds, which can go up to 9 digits (i.e. up to 1 nanosecond resolution),are optional. The "Z" suffix indicates the timezone ("UTC"); the timezoneis required. A proto3 JSON serializer should always use UTC (as indicated by"Z") when printing the Timestamp type and a proto3 JSON parser should beable to accept both UTC and other timezones (as indicated by an offset).

For example, "2017-01-15T01:30:15.01Z" encodes 15.01 seconds past01:30 UTC on January 15, 2017.

In JavaScript, one can convert a Date object to this format using thestandard[toISOString()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString)method. In Python, a standard `datetime.datetime` object can be convertedto this format using[`strftime`](https://docs.python.org/2/library/time.html#time.strftime) withthe time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one can usethe Joda Time's [`ISODateTimeFormat.dateTime()`](http://joda-time.sourceforge.net/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime()) to obtain a formatter capable of generating timestamps in this format.

func New(ttime.Time) *Timestamp

func Now() *Timestamp

func (x *Timestamp) AsTime()time.Time

func (x *Timestamp) CheckValid()error

func (*Timestamp) Descriptor() ([]byte, []int)

func (x *Timestamp) GetNanos()int32

func (x *Timestamp) GetSeconds()int64

func (x *Timestamp) IsValid()bool

func (*Timestamp) ProtoMessage()

func (x *Timestamp) ProtoReflect()protoreflect.Message

func (x *Timestamp) Reset()

func (x *Timestamp) String()string