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](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 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, 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()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString) method. In Python, a standard `datetime.datetime` object can be converted to this format using [`strftime`](https://docs.python.org/2/library/time.html#time.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://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime%2D%2D ) to obtain a formatter capable of generating timestamps in this format.Protobuf type
google.protobuf.Timestamp
Modifier and Type | Class and Description |
---|---|
static class |
Timestamp.Builder
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.
|
GeneratedMessageLite.DefaultInstanceBasedParser<T extends GeneratedMessageLite<T,?>>, GeneratedMessageLite.ExtendableBuilder<MessageType extends GeneratedMessageLite.ExtendableMessage<MessageType,BuilderType>,BuilderType extends GeneratedMessageLite.ExtendableBuilder<MessageType,BuilderType>>, GeneratedMessageLite.ExtendableMessage<MessageType extends GeneratedMessageLite.ExtendableMessage<MessageType,BuilderType>,BuilderType extends GeneratedMessageLite.ExtendableBuilder<MessageType,BuilderType>>, GeneratedMessageLite.ExtendableMessageOrBuilder<MessageType extends GeneratedMessageLite.ExtendableMessage<MessageType,BuilderType>,BuilderType extends GeneratedMessageLite.ExtendableBuilder<MessageType,BuilderType>>, GeneratedMessageLite.GeneratedExtension<ContainingType extends MessageLite,Type>, GeneratedMessageLite.MethodToInvoke, GeneratedMessageLite.SerializedForm
AbstractMessageLite.InternalOneOfEnum
Modifier and Type | Field and Description |
---|---|
static int |
NANOS_FIELD_NUMBER |
static int |
SECONDS_FIELD_NUMBER |
memoizedSerializedSize, unknownFields
memoizedHashCode
createBuilder, createBuilder, dynamicMethod, dynamicMethod, emptyBooleanList, emptyDoubleList, emptyFloatList, emptyIntList, emptyLongList, emptyProtobufList, equals, getDefaultInstanceForType, getParserForType, getSerializedSize, hashCode, isInitialized, isInitialized, makeImmutable, mergeLengthDelimitedField, mergeUnknownFields, mergeVarintField, mutableCopy, mutableCopy, mutableCopy, mutableCopy, mutableCopy, mutableCopy, newBuilderForType, newMessageInfo, newRepeatedGeneratedExtension, newSingularGeneratedExtension, parseDelimitedFrom, parseDelimitedFrom, parseFrom, parseFrom, parseFrom, parseFrom, parseFrom, parseFrom, parseFrom, parseFrom, parseFrom, parseFrom, parsePartialFrom, parseUnknownField, registerDefaultInstance, toBuilder, toString, writeTo
addAll, addAll, checkByteStringIsUtf8, toByteArray, toByteString, writeDelimitedTo, writeTo
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
getDefaultInstanceForType, isInitialized
public static final int SECONDS_FIELD_NUMBER
public static final int NANOS_FIELD_NUMBER
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;
getSeconds
in interface TimestampOrBuilder
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;
getNanos
in interface TimestampOrBuilder
public static Timestamp parseFrom(ByteBuffer data) throws InvalidProtocolBufferException
InvalidProtocolBufferException
public static Timestamp parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry) throws InvalidProtocolBufferException
InvalidProtocolBufferException
public static Timestamp parseFrom(ByteString data) throws InvalidProtocolBufferException
InvalidProtocolBufferException
public static Timestamp parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry) throws InvalidProtocolBufferException
InvalidProtocolBufferException
public static Timestamp parseFrom(byte[] data) throws InvalidProtocolBufferException
InvalidProtocolBufferException
public static Timestamp parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry) throws InvalidProtocolBufferException
InvalidProtocolBufferException
public static Timestamp parseFrom(InputStream input) throws IOException
IOException
public static Timestamp parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry) throws IOException
IOException
public static Timestamp parseDelimitedFrom(InputStream input) throws IOException
IOException
public static Timestamp parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry) throws IOException
IOException
public static Timestamp parseFrom(CodedInputStream input) throws IOException
IOException
public static Timestamp parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry) throws IOException
IOException
public static Timestamp.Builder newBuilder()
public static Timestamp.Builder newBuilder(Timestamp prototype)
protected final Object dynamicMethod(GeneratedMessageLite.MethodToInvoke method, Object arg0, Object arg1)
GeneratedMessageLite
GeneratedMessageLite.MethodToInvoke
.
Theses 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 isInitilaized
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.
For use by generated code only.
dynamicMethod
in class GeneratedMessageLite<Timestamp,Timestamp.Builder>
public static Timestamp getDefaultInstance()
Copyright © 2008–2022. All rights reserved.