Struct TimestampView 

pub struct TimestampView<'a> {
    pub seconds: i64,
    pub nanos: i32,
    pub __buffa_unknown_fields: UnknownFieldsView<'a>,
}

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

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

The range is from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z. By restricting to that range, we ensure that we can convert to and from [RFC 3339](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 format. That is, the format 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 fractional seconds, which can go up to 9 digits (i.e. up to 1 nanosecond resolution), are optional. The “Z” suffix indicates the timezone (“UTC”); the timezone is required. A proto3 JSON serializer should always use UTC (as indicated by “Z”) when printing the Timestamp type and a proto3 JSON parser should be able to accept both UTC and other timezones (as indicated by an offset).

For example, “2017-01-15T01:30:15.01Z” encodes 15.01 seconds past 01:30 UTC on January 15, 2017.

In JavaScript, one can convert a Date object to this format using the standard toISOString() method. In Python, a standard datetime.datetime object can be converted to this format using strftime with the time format spec ‘%Y-%m-%dT%H:%M:%S.%fZ’. Likewise, in Java, one can use the 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.

Fields

seconds: i64

Represents seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z inclusive.

Field 1: seconds

nanos: i32

Non-negative fractions of a second at nanosecond resolution. Negative second values with fractions must still have non-negative nanos values that count forward in time. Must be from 0 to 999,999,999 inclusive.

Field 2: nanos

__buffa_unknown_fields: UnknownFieldsView<'a>

Trait Implementations

impl<'a> Clone for TimestampView<'a>

fn clone(&self) -> TimestampView<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for TimestampView<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Default for TimestampView<'a>

fn default() -> TimestampView<'a>

Returns the “default value” for a type.

impl<'v> DefaultViewInstance for TimestampView<'v>

fn default_view_instance<'a>() -> &'a Self

where Self: 'a,

Return a reference to the single default view instance.

impl<'a> MessageName for TimestampView<'a>

const PACKAGE: &'static str = "google.protobuf"

The protobuf package the message is declared in.

const NAME: &'static str = "Timestamp"

The unqualified message name, with . between nesting levels.

const FULL_NAME: &'static str = "google.protobuf.Timestamp"

The fully-qualified protobuf type name with no leading dot.

const TYPE_URL: &'static str = "type.googleapis.com/google.protobuf.Timestamp"

The google.protobuf.Any.type_url form for this message.

impl<'a> MessageView<'a> for TimestampView<'a>

type Owned = Timestamp

The corresponding owned message type.

fn decode_view(buf: &'a [u8]) -> Result<Self, DecodeError>

Decode a view from a buffer, borrowing string/bytes fields directly.

fn decode_view_with_ctx( buf: &'a [u8], ctx: DecodeContext<'_>, ) -> Result<Self, DecodeError>

Decode a view under custom decode limits.

fn merge_view_field( &mut self, tag: Tag, cur: &'a [u8], before_tag: &'a [u8], ctx: DecodeContext<'_>, ) -> Result<&'a [u8], DecodeError>

Decode one field’s payload into this view (generated per message).

fn to_owned_message(&self) -> Result<Timestamp, DecodeError>

Convert this view to the owned message type.

fn to_owned_from_source( &self, __buffa_src: Option<&Bytes>, ) -> Result<Timestamp, DecodeError>

Convert this view to the owned message type, optionally slicing bytes::Bytes-typed fields from source instead of copying.

fn decode_view_ctx( buf: &'a [u8], ctx: DecodeContext<'_>, ) -> Result<Self, DecodeError>

where Self: Default,

Decode a view under an explicit DecodeContext (remaining recursion depth, unknown-field allowance, and element-memory budget), driving the provided tag loop over merge_view_field.

fn merge_into_view( &mut self, buf: &'a [u8], ctx: DecodeContext<'_>, ) -> Result<(), DecodeError>

Merge fields from buf into this view (proto merge semantics): repeated fields append, singular fields last-wins, singular message fields merge recursively.

impl<'a> ReflectElement for TimestampView<'a>

Available on crate feature reflect only.

fn as_value_ref(&self) -> ValueRef<'_>

Borrow this element as a ValueRef.

impl<'a> ReflectMessage for TimestampView<'a>

Available on crate feature reflect only.

fn message_descriptor(&self) -> &MessageDescriptor

The descriptor for this message type.

fn pool(&self) -> &Arc<DescriptorPool>

The pool the descriptor lives in. Use this to dereference MessageIndex / EnumIndex from FieldKind, or Arc::clone it to construct sibling DynamicMessages while navigating nested fields.

fn get(&self, field: &FieldDescriptor) -> ValueRef<'_>

Get a field’s value.

fn has(&self, field: &FieldDescriptor) -> bool

Whether a field is present.

fn for_each_set(&self, f: &mut dyn FnMut(&FieldDescriptor, ValueRef<'_>))

Visit every set field.

fn to_dynamic(&self) -> DynamicMessage

Snapshot this message as an owned DynamicMessage.

fn unknown_fields(&self) -> &UnknownFields

The fields preserved from decode that the message’s descriptor does not recognize.

fn which_oneof(&self, oneof: &OneofDescriptor) -> Option<&FieldDescriptor>

Which member of oneof is set, if any.

impl Serialize for TimestampView<'_>

Available on crate feature json only.

fn serialize<S: Serializer>(&self, s: S) -> Result<S::Ok, S::Error>

Serializes by converting to the owned WKT and delegating to its proto3-JSON Serialize impl. Allocates the owned form for this field only; the parent message stays zero-copy.

impl<'a> ViewEncode<'a> for TimestampView<'a>

fn compute_size(&self, _cache: &mut SizeCache) -> u32

Compute the encoded byte size of this view, recording nested sub-message sizes in cache for write_to to consume.

fn write_to(&self, _cache: &mut SizeCache, buf: &mut impl EncodeSink)

Write this view’s encoded bytes to a buffer, consuming nested-message sizes from cache (populated by a prior compute_size call on the same cache).

fn encode(&self, buf: &mut impl EncodeSink)

Compute size, then write. Primary view-encode entry point.

fn try_encode(&self, buf: &mut impl EncodeSink) -> Result<(), EncodeError>

Encode, returning an error instead of panicking if the encoded size exceeds the 2 GiB protobuf limit (MAX_MESSAGE_BYTES).

fn encode_with_cache(&self, cache: &mut SizeCache, buf: &mut impl EncodeSink)

Encode using a caller-supplied SizeCache, for reuse across many encodes in a hot loop. Clears the cache first.

fn try_encode_with_cache( &self, cache: &mut SizeCache, buf: &mut impl EncodeSink, ) -> Result<(), EncodeError>

Encode with a caller-supplied SizeCache, returning an error instead of panicking if the encoded size exceeds the 2 GiB protobuf limit (MAX_MESSAGE_BYTES). Clears the cache first.

fn try_encode_bounded( &self, max_bytes: u32, buf: &mut impl EncodeSink, ) -> Result<u32, EncodeError>

Encode this view into buf only if its encoded size fits within max_bytes, using a single size pass that is then reused for the write.

fn try_encode_bounded_with_cache( &self, max_bytes: u32, cache: &mut SizeCache, buf: &mut impl EncodeSink, ) -> Result<u32, EncodeError>

Like try_encode_bounded but reuses an existing SizeCache, clearing it first.

fn encoded_len(&self) -> u32

Compute the encoded byte size of this view.

fn try_encoded_len(&self) -> Result<u32, EncodeError>

Compute the encoded byte size, returning an error instead of panicking if it exceeds the 2 GiB protobuf limit (MAX_MESSAGE_BYTES).

fn encode_length_delimited(&self, buf: &mut impl EncodeSink)

Encode this view as a length-delimited byte sequence.

fn try_encode_length_delimited( &self, buf: &mut impl EncodeSink, ) -> Result<(), EncodeError>

Encode as a length-delimited byte sequence, returning an error instead of panicking if the encoded size exceeds the 2 GiB protobuf limit (MAX_MESSAGE_BYTES).

fn encode_to_vec(&self) -> Vec<u8>

Encode this view to a new Vec<u8>.

fn try_encode_to_vec(&self) -> Result<Vec<u8>, EncodeError>

Encode to a new Vec<u8>, returning an error instead of panicking if the encoded size exceeds the 2 GiB protobuf limit (MAX_MESSAGE_BYTES).

fn encode_to_bytes(&self) -> Bytes

Encode this view to a new bytes::Bytes.

fn try_encode_to_bytes(&self) -> Result<Bytes, EncodeError>

Encode to a new bytes::Bytes, returning an error instead of panicking if the encoded size exceeds the 2 GiB protobuf limit (MAX_MESSAGE_BYTES).

impl ViewReborrow for TimestampView<'static>

type Reborrowed<'b> = TimestampView<'b>

The same view type with its lifetime shortened to 'b.

fn reborrow<'b>(this: &'b Self) -> &'b Self::Reborrowed<'b>

Coerce &'b Self (= &'b FooView<'static>) to &'b Self::Reborrowed<'b> (= &'b FooView<'b>). The canonical body is just this; the compiler accepts it via standard lifetime variance for covariant view types.