Quota configuration helps to achieve fairness and budgeting in service
usage.

The quota configuration works this way:

  • The service configuration defines a set of metrics.
  • For API calls, the quota.metric_rules maps methods to metrics with
    corresponding costs.
  • The quota.limits defines limits on the metrics, which will be used for
    quota checks at runtime.
    An example quota configuration in yaml format:
    quota:
    limits:
    • name: apiWriteQpsPerProject
      metric: library.googleapis.com/write_calls
      unit: "1/min/{project}" # rate limit for consumer projects
      values:
      STANDARD: 10000
      # The metric rules bind all methods to the read_calls metric,
      # except for the UpdateBook and DeleteBook methods. These two methods
      # are mapped to the write_calls metric, with the UpdateBook method
      # consuming at twice rate as the DeleteBook method.
      metric_rules:
    • selector: "*"
      metric_costs:
      library.googleapis.com/read_calls: 1
    • selector: google.example.library.v1.LibraryService.UpdateBook
      metric_costs:
      library.googleapis.com/write_calls: 2
    • selector: google.example.library.v1.LibraryService.DeleteBook
      metric_costs:
      library.googleapis.com/write_calls: 1
      Corresponding Metric definition:
      metrics:
    • name: library.googleapis.com/read_calls
      display_name: Read requests
      metric_kind: DELTA
      value_type: INT64
    • name: library.googleapis.com/write_calls
      display_name: Write requests
      metric_kind: DELTA
      value_type: INT64

Generated from protobuf message google.api.Quota

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 getLimits()
     

    List of QuotaLimit definitions for the service.

    Used by metric-based quotas only.

    Generated from protobuf field repeated .google.api.QuotaLimit limits = 3;

    public getMetricRules()
     

    List of MetricRule definitions, each one mapping a selected method to one
    or more metrics.

    Used by metric-based quotas only.

    Generated from protobuf field repeated .google.api.MetricRule metric_rules = 4;

    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)
     
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    public Google\Protobuf\Internal\Message::parseFromStream( $input)
     
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    public Google\Protobuf\Internal\Message::serializeToJsonStream( $output)
     
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    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 setLimits( $var)
     

    List of QuotaLimit definitions for the service.

    Used by metric-based quotas only.

    Generated from protobuf field repeated .google.api.QuotaLimit limits = 3;

    • return $this
    public setMetricRules( $var)
     

    List of MetricRule definitions, each one mapping a selected method to one
    or more metrics.

    Used by metric-based quotas only.

    Generated from protobuf field repeated .google.api.MetricRule metric_rules = 4;

    • 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 $limits
     

    List of QuotaLimit definitions for the service.

    Used by metric-based quotas only.

    Generated from protobuf field repeated .google.api.QuotaLimit limits = 3;

    private $metric_rules
     

    List of MetricRule definitions, each one mapping a selected method to one
    or more metrics.

    Used by metric-based quotas only.

    Generated from protobuf field repeated .google.api.MetricRule metric_rules = 4;

    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
            © 2020 Bruce Wells
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