Class Timestamp (3.19.4) 

public final class Timestamp extends GeneratedMessageLite<Timestamp,Timestamp.Builder> implements TimestampOrBuilder

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. 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 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() to obtain a formatter capable of generating timestamps in this format.

Protobuf type google.protobuf.Timestamp

Inheritance

Object > AbstractMessageLite<MessageType,BuilderType> > GeneratedMessageLite > Timestamp

Implements

TimestampOrBuilder

Static Fields

NANOS_FIELD_NUMBER

public static final int NANOS_FIELD_NUMBER
Field Value
Type Description
int

SECONDS_FIELD_NUMBER

public static final int SECONDS_FIELD_NUMBER
Field Value
Type Description
int

Static Methods

getDefaultInstance()

public static Timestamp getDefaultInstance()
Returns
Type Description
Timestamp

newBuilder()

public static Timestamp.Builder newBuilder()
Returns
Type Description
Timestamp.Builder

newBuilder(Timestamp prototype)

public static Timestamp.Builder newBuilder(Timestamp prototype)
Parameter
Name Description
prototype Timestamp
Returns
Type Description
Timestamp.Builder

parseDelimitedFrom(InputStream input)

public static Timestamp parseDelimitedFrom(InputStream input)
Parameter
Name Description
input InputStream
Returns
Type Description
Timestamp
Exceptions
Type Description
IOException

parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

public static Timestamp parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)
Parameters
Name Description
input InputStream
extensionRegistry ExtensionRegistryLite
Returns
Type Description
Timestamp
Exceptions
Type Description
IOException

parseFrom(byte[] data)

public static Timestamp parseFrom(byte[] data)
Parameter
Name Description
data byte[]
Returns
Type Description
Timestamp
Exceptions
Type Description
InvalidProtocolBufferException

parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)

public static Timestamp parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)
Parameters
Name Description
data byte[]
extensionRegistry ExtensionRegistryLite
Returns
Type Description
Timestamp
Exceptions
Type Description
InvalidProtocolBufferException

parseFrom(ByteString data)

public static Timestamp parseFrom(ByteString data)
Parameter
Name Description
data ByteString
Returns
Type Description
Timestamp
Exceptions
Type Description
InvalidProtocolBufferException

parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)

public static Timestamp parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)
Parameters
Name Description
data ByteString
extensionRegistry ExtensionRegistryLite
Returns
Type Description
Timestamp
Exceptions
Type Description
InvalidProtocolBufferException

parseFrom(CodedInputStream input)

public static Timestamp parseFrom(CodedInputStream input)
Parameter
Name Description
input CodedInputStream
Returns
Type Description
Timestamp
Exceptions
Type Description
IOException

parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

public static Timestamp parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)
Parameters
Name Description
input CodedInputStream
extensionRegistry ExtensionRegistryLite
Returns
Type Description
Timestamp
Exceptions
Type Description
IOException

parseFrom(InputStream input)

public static Timestamp parseFrom(InputStream input)
Parameter
Name Description
input InputStream
Returns
Type Description
Timestamp
Exceptions
Type Description
IOException

parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

public static Timestamp parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)
Parameters
Name Description
input InputStream
extensionRegistry ExtensionRegistryLite
Returns
Type Description
Timestamp
Exceptions
Type Description
IOException

parseFrom(ByteBuffer data)

public static Timestamp parseFrom(ByteBuffer data)
Parameter
Name Description
data ByteBuffer
Returns
Type Description
Timestamp
Exceptions
Type Description
InvalidProtocolBufferException

parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)

public static Timestamp parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)
Parameters
Name Description
data ByteBuffer
extensionRegistry ExtensionRegistryLite
Returns
Type Description
Timestamp
Exceptions
Type Description
InvalidProtocolBufferException

parser()

public static Parser<Timestamp> parser()
Returns
Type Description
Parser<Timestamp>

Methods

dynamicMethod(GeneratedMessageLite.MethodToInvoke method, Object arg0, Object arg1)

protected final Object dynamicMethod(GeneratedMessageLite.MethodToInvoke method, Object arg0, Object arg1)

A method that implements different types of operations described in MethodToInvoke. These different kinds of operations are required to implement message-level operations for builders in the runtime. This method bundles those operations to reduce the generated methods count.

  • NEW_INSTANCE returns a new instance of the protocol buffer that has not yet been made immutable. See MAKE_IMMUTABLE.
  • IS_INITIALIZED returns null for false and the default instance for true. It doesn't use or modify any memoized value.
  • GET_MEMOIZED_IS_INITIALIZED returns the memoized isInitialized byte value.
  • SET_MEMOIZED_IS_INITIALIZED sets the memoized isInitialized byte value to 1 if the first parameter is not null, or to 0 if the first parameter is null.
  • NEW_BUILDER returns a BuilderType instance.

This method, plus the implementation of the Builder, enables the Builder class to be proguarded away entirely on Android.

For use by generated code only.

Parameters
Name Description
method GeneratedMessageLite.MethodToInvoke
arg0 Object
arg1 Object
Returns
Type Description
Object
Overrides

getNanos()

public int getNanos()

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.

int32 nanos = 2;

Returns
Type Description
int

The nanos.

getSeconds()

public long getSeconds()

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.

int64 seconds = 1;

Returns
Type Description
long

The seconds.