Class Timestamp

  • All Implemented Interfaces:
    MessageLite, MessageLiteOrBuilder, TimestampOrBuilder

    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 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, 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://joda-time.sourceforge.net/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime()
     ) to obtain a formatter capable of generating timestamps in this format.
     
    Protobuf type google.protobuf.Timestamp
    • Field Detail

      • seconds_

        private long seconds_
      • nanos_

        private int nanos_
      • DEFAULT_INSTANCE

        private static final Timestamp DEFAULT_INSTANCE
    • Constructor Detail

      • Timestamp

        private Timestamp()
    • Method Detail

      • 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;
        Specified by:
        getSeconds in interface TimestampOrBuilder
        Returns:
        The seconds.
      • setSeconds

        private void setSeconds​(long value)
         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;
        Parameters:
        value - The seconds to set.
      • clearSeconds

        private void clearSeconds()
         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;
      • 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;
        Specified by:
        getNanos in interface TimestampOrBuilder
        Returns:
        The nanos.
      • setNanos

        private void setNanos​(int value)
         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;
        Parameters:
        value - The nanos to set.
      • clearNanos

        private void clearNanos()
         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;
      • parseFrom

        public static Timestamp parseFrom​(java.io.InputStream input)
                                   throws java.io.IOException
        Throws:
        java.io.IOException
      • parseFrom

        public static Timestamp parseFrom​(java.io.InputStream input,
                                          ExtensionRegistryLite extensionRegistry)
                                   throws java.io.IOException
        Throws:
        java.io.IOException
      • parseDelimitedFrom

        public static Timestamp parseDelimitedFrom​(java.io.InputStream input)
                                            throws java.io.IOException
        Throws:
        java.io.IOException
      • parseDelimitedFrom

        public static Timestamp parseDelimitedFrom​(java.io.InputStream input,
                                                   ExtensionRegistryLite extensionRegistry)
                                            throws java.io.IOException
        Throws:
        java.io.IOException
      • parseFrom

        public static Timestamp parseFrom​(CodedInputStream input)
                                   throws java.io.IOException
        Throws:
        java.io.IOException
      • dynamicMethod

        protected final java.lang.Object dynamicMethod​(GeneratedMessageLite.MethodToInvoke method,
                                                       java.lang.Object arg0,
                                                       java.lang.Object arg1)
        Description copied from class: GeneratedMessageLite
        A method that implements different types of operations described in GeneratedMessageLite.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.

        Specified by:
        dynamicMethod in class GeneratedMessageLite<Timestamp,​Timestamp.Builder>
      • getDefaultInstance

        public static Timestamp getDefaultInstance()