A Duration represents a signed, fixed-length span of time represented
as a count of seconds and fractions of seconds at nanosecond
resolution. It is independent of any calendar and concepts like "day"
or "month". It is related to Timestamp in that the difference between
two Timestamp values is a Duration and it can be added or subtracted
from a Timestamp. Range is approximately +-10,000 years.

Examples

Example 1: Compute Duration from two Timestamps in pseudo code.

Timestamp start = ...;
Timestamp end = ...;
Duration duration = ...;
duration.seconds = end.seconds - start.seconds;
duration.nanos = end.nanos - start.nanos;
if (duration.seconds < 0 && duration.nanos > 0) {
  duration.seconds += 1;
  duration.nanos -= 1000000000;
} else if (durations.seconds > 0 && duration.nanos < 0) {
  duration.seconds -= 1;
  duration.nanos += 1000000000;
}

Example 2: Compute Timestamp from Timestamp + Duration in pseudo code.

Timestamp start = ...;
Duration duration = ...;
Timestamp end = ...;
end.seconds = start.seconds + duration.seconds;
end.nanos = start.nanos + duration.nanos;
if (end.nanos < 0) {
  end.seconds -= 1;
  end.nanos += 1000000000;
} else if (end.nanos >= 1000000000) {
  end.seconds += 1;
  end.nanos -= 1000000000;
}

Example 3: Compute Duration from datetime.timedelta in Python.

td = datetime.timedelta(days=3, minutes=10)
duration = Duration()
duration.FromTimedelta(td)

JSON Mapping

In JSON format, the Duration type is encoded as a string rather than an
object, where the string ends in the suffix "s" (indicating seconds) and
is preceded by the number of seconds, with nanoseconds expressed as
fractional seconds. For example, 3 seconds with 0 nanoseconds should be
encoded in JSON format as "3s", while 3 seconds and 1 nanosecond should
be expressed in JSON format as "3.000000001s", and 3 seconds and 1
microsecond should be expressed in JSON format as "3.000001s".

Generated from protobuf message google.protobuf.Duration

CloneableInstantiable
ExtendsGoogle\Protobuf\Internal\Message
Methods
public __construct( $data = NULL)
 

Constructor.

    public Google\Protobuf\Internal\Message::byteSize()
     
    • ignore
    public Google\Protobuf\Internal\Message::clear()
     

    Clear all containing fields.

    • return
    public Google\Protobuf\Internal\Message::discardUnknownFields()
     

    Clear all unknown fields previously parsed.

    • return
    public getNanos()
     

    Signed fractions of a second at nanosecond resolution of the span
    of time. Durations less than one second are represented with a 0
    seconds field and a positive or negative nanos field. For durations
    of one second or more, a non-zero value for the nanos field must be
    of the same sign as the seconds field. Must be from -999,999,999
    to +999,999,999 inclusive.

    Generated from protobuf field int32 nanos = 2;

    • return int
    public getSeconds()
     

    Signed seconds of the span of time. Must be from -315,576,000,000
    to +315,576,000,000 inclusive. Note: these bounds are computed from:
    60 sec/min 60 min/hr 24 hr/day 365.25 days/year 10000 years

    Generated from protobuf field int64 seconds = 1;

    • return int|string
    public Google\Protobuf\Internal\Message::jsonByteSize()
     
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    public Google\Protobuf\Internal\Message::mergeFrom( $msg)
     

    Merges the contents of the specified message into current message.

    This method merges the contents of the specified message into the
    current message. Singular fields that are set in the specified message
    overwrite the corresponding fields in the current message. Repeated
    fields are appended. Map fields key-value pairs are overwritten.
    Singular/Oneof sub-messages are recursively merged. All overwritten
    sub-messages are deep-copied.

    • return
    public Google\Protobuf\Internal\Message::mergeFromJsonString( $data, $ignore_unknown = false)
     

    Parses a json string to protobuf message.

    This function takes a string in the json wire format, matching the
    encoding output by serializeToJsonString().
    See mergeFrom() for merging behavior, if the field is already set in the
    specified message.

    • return
    • throws Exception Invalid data.
    public Google\Protobuf\Internal\Message::mergeFromString( $data)
     

    Parses a protocol buffer contained in a string.

    This function takes a string in the (non-human-readable) binary wire
    format, matching the encoding output by serializeToString().
    See mergeFrom() for merging behavior, if the field is already set in the
    specified message.

    • return
    • throws Exception Invalid data.
    public Google\Protobuf\Internal\Message::parseFromJsonStream( $input, $ignore_unknown)
     
    • ignore
    public Google\Protobuf\Internal\Message::parseFromStream( $input)
     
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    public Google\Protobuf\Internal\Message::serializeToJsonStream( $output)
     
    • ignore
    public Google\Protobuf\Internal\Message::serializeToJsonString()
     

    Serialize the message to json string.

    • return string Serialized json protobuf data.
    public Google\Protobuf\Internal\Message::serializeToStream( $output)
     
    • ignore
    public Google\Protobuf\Internal\Message::serializeToString()
     

    Serialize the message to string.

    • return string Serialized binary protobuf data.
    public setNanos( $var)
     

    Signed fractions of a second at nanosecond resolution of the span
    of time. Durations less than one second are represented with a 0
    seconds field and a positive or negative nanos field. For durations
    of one second or more, a non-zero value for the nanos field must be
    of the same sign as the seconds field. Must be from -999,999,999
    to +999,999,999 inclusive.

    Generated from protobuf field int32 nanos = 2;

    • return $this
    public setSeconds( $var)
     

    Signed seconds of the span of time. Must be from -315,576,000,000
    to +315,576,000,000 inclusive. Note: these bounds are computed from:
    60 sec/min 60 min/hr 24 hr/day 365.25 days/year 10000 years

    Generated from protobuf field int64 seconds = 1;

    • return $this
    Methods
    protected Google\Protobuf\Internal\Message::mergeFromArray(array $array)
     

    Populates the message from a user-supplied PHP array. Array keys
    correspond to Message properties and nested message properties.

    Example:

    $message->mergeFromArray([
        'name' => 'This is a message name',
        'interval' => [
             'startTime' => time() - 60,
             'endTime' => time(),
        ]
    ]);
    

    This method will trigger an error if it is passed data that cannot
    be converted to the correct type. For example, a StringValue field
    must receive data that is either a string or a StringValue object.

    • return
    protected Google\Protobuf\Internal\Message::mergeFromJsonArray( $array, $ignore_unknown)
    protected Google\Protobuf\Internal\Message::readOneof( $number)
    protected Google\Protobuf\Internal\Message::readWrapperValue( $member)
    protected Google\Protobuf\Internal\Message::whichOneof( $oneof_name)
    protected Google\Protobuf\Internal\Message::writeOneof( $number, $value)
    protected Google\Protobuf\Internal\Message::writeWrapperValue( $member, $value)
    Properties
    private $nanos
     

    Signed fractions of a second at nanosecond resolution of the span
    of time. Durations less than one second are represented with a 0
    seconds field and a positive or negative nanos field. For durations
    of one second or more, a non-zero value for the nanos field must be
    of the same sign as the seconds field. Must be from -999,999,999
    to +999,999,999 inclusive.

    Generated from protobuf field int32 nanos = 2;

    private $seconds
     

    Signed seconds of the span of time. Must be from -315,576,000,000
    to +315,576,000,000 inclusive. Note: these bounds are computed from:
    60 sec/min 60 min/hr 24 hr/day 365.25 days/year 10000 years

    Generated from protobuf field int64 seconds = 1;

    Methods
    private Google\Protobuf\Internal\Message::appendHelper( $field, $append_value)
    private Google\Protobuf\Internal\Message::convertJsonValueToProtoValue( $value, $field, $ignore_unknown, $is_map_key = false)
    private Google\Protobuf\Internal\Message::defaultValue( $field)
     
    • ignore
    private Google\Protobuf\Internal\Message::existField( $field)
     
    • ignore
    private Google\Protobuf\Internal\Message::fieldByteSize( $field)
     
    • ignore
    private Google\Protobuf\Internal\Message::fieldDataOnlyByteSize( $field, $value)
     
    • ignore
    private Google\Protobuf\Internal\Message::fieldDataOnlyJsonByteSize( $field, $value)
     
    • ignore
    private Google\Protobuf\Internal\Message::fieldJsonByteSize( $field)
     
    • ignore
    private Google\Protobuf\Internal\Message::initWithDescriptor(Google\Protobuf\Internal\Descriptor $desc)
     
    • ignore
    private Google\Protobuf\Internal\Message::initWithGeneratedPool()
     
    • ignore
    private Google\Protobuf\Internal\Message::kvUpdateHelper( $field, $update_key, $update_value)
    private Google\Protobuf\Internal\Message::mergeFromArrayJsonImpl( $array, $ignore_unknown)
    private static Google\Protobuf\Internal\Message::normalizeArrayElementsToMessageType( $value, $class)
     

    Tries to normalize the elements in $value into a provided protobuf
    wrapper type $class. If $value is any type other than array, we do
    not do any conversion, and instead rely on the existing protobuf
    type checking. If $value is an array, we process each element and
    try to convert it to an instance of $class.

      private static Google\Protobuf\Internal\Message::normalizeToMessageType( $value, $class)
       

      Tries to normalize $value into a provided protobuf wrapper type $class.

      If $value is any type other than an object, we attempt to construct an
      instance of $class and assign $value to it using the setValue method
      shared by all wrapper types.

      This method will raise an error if it receives a type that cannot be
      assigned to the wrapper type via setValue.

        private Google\Protobuf\Internal\Message::parseFieldFromStream( $tag, $input, $field)
         
        • ignore
        private static Google\Protobuf\Internal\Message::parseFieldFromStreamNoTag( $input, $field, $value)
         
        • ignore
        private Google\Protobuf\Internal\Message::repeatedFieldDataOnlyByteSize( $field)
         
        • ignore
        private Google\Protobuf\Internal\Message::serializeFieldToJsonStream( $output, $field)
         
        • ignore
        private Google\Protobuf\Internal\Message::serializeFieldToStream( $output, $field)
         
        • ignore
        private Google\Protobuf\Internal\Message::serializeMapFieldToStream( $field, $output)
         
        • ignore
        private Google\Protobuf\Internal\Message::serializeRepeatedFieldToStream( $field, $output)
         
        • ignore
        private Google\Protobuf\Internal\Message::serializeSingularFieldToStream( $field, $output)
         
        • ignore
        private Google\Protobuf\Internal\Message::skipField( $input, $tag)
         
        • ignore
        Methods
        private static Google\Protobuf\Internal\Message::normalizeArrayElementsToMessageType( $value, $class)
         

        Tries to normalize the elements in $value into a provided protobuf
        wrapper type $class. If $value is any type other than array, we do
        not do any conversion, and instead rely on the existing protobuf
        type checking. If $value is an array, we process each element and
        try to convert it to an instance of $class.

          private static Google\Protobuf\Internal\Message::normalizeToMessageType( $value, $class)
           

          Tries to normalize $value into a provided protobuf wrapper type $class.

          If $value is any type other than an object, we attempt to construct an
          instance of $class and assign $value to it using the setValue method
          shared by all wrapper types.

          This method will raise an error if it receives a type that cannot be
          assigned to the wrapper type via setValue.

            private static Google\Protobuf\Internal\Message::parseFieldFromStreamNoTag( $input, $field, $value)
             
            • ignore
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