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Akka gRPC - Support for building streaming gRPC servers and clients on top of Akka Streams.
// Copyright 2015 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
syntax = "proto3";
package google.api;
option go_package = "google.golang.org/genproto/googleapis/api/serviceconfig;serviceconfig";
option java_multiple_files = true;
option java_outer_classname = "QuotaProto";
option java_package = "com.google.api";
option objc_class_prefix = "GAPI";
// Quota configuration helps to achieve fairness and budgeting in service
// usage.
//
// The metric based 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
//
//
message Quota {
// List of `QuotaLimit` definitions for the service.
repeated QuotaLimit limits = 3;
// List of `MetricRule` definitions, each one mapping a selected method to one
// or more metrics.
repeated MetricRule metric_rules = 4;
}
// Bind API methods to metrics. Binding a method to a metric causes that
// metric's configured quota behaviors to apply to the method call.
message MetricRule {
// Selects the methods to which this rule applies.
//
// Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;
// Metrics to update when the selected methods are called, and the associated
// cost applied to each metric.
//
// The key of the map is the metric name, and the values are the amount
// increased for the metric against which the quota limits are defined.
// The value must not be negative.
map metric_costs = 2;
}
// `QuotaLimit` defines a specific limit that applies over a specified duration
// for a limit type. There can be at most one limit for a duration and limit
// type combination defined within a `QuotaGroup`.
message QuotaLimit {
// Name of the quota limit.
//
// The name must be provided, and it must be unique within the service. The
// name can only include alphanumeric characters as well as '-'.
//
// The maximum length of the limit name is 64 characters.
string name = 6;
// Optional. User-visible, extended description for this quota limit.
// Should be used only when more context is needed to understand this limit
// than provided by the limit's display name (see: `display_name`).
string description = 2;
// Default number of tokens that can be consumed during the specified
// duration. This is the number of tokens assigned when a client
// application developer activates the service for his/her project.
//
// Specifying a value of 0 will block all requests. This can be used if you
// are provisioning quota to selected consumers and blocking others.
// Similarly, a value of -1 will indicate an unlimited quota. No other
// negative values are allowed.
//
// Used by group-based quotas only.
int64 default_limit = 3;
// Maximum number of tokens that can be consumed during the specified
// duration. Client application developers can override the default limit up
// to this maximum. If specified, this value cannot be set to a value less
// than the default limit. If not specified, it is set to the default limit.
//
// To allow clients to apply overrides with no upper bound, set this to -1,
// indicating unlimited maximum quota.
//
// Used by group-based quotas only.
int64 max_limit = 4;
// Free tier value displayed in the Developers Console for this limit.
// The free tier is the number of tokens that will be subtracted from the
// billed amount when billing is enabled.
// This field can only be set on a limit with duration "1d", in a billable
// group; it is invalid on any other limit. If this field is not set, it
// defaults to 0, indicating that there is no free tier for this service.
//
// Used by group-based quotas only.
int64 free_tier = 7;
// Duration of this limit in textual notation. Must be "100s" or "1d".
//
// Used by group-based quotas only.
string duration = 5;
// The name of the metric this quota limit applies to. The quota limits with
// the same metric will be checked together during runtime. The metric must be
// defined within the service config.
string metric = 8;
// Specify the unit of the quota limit. It uses the same syntax as
// [Metric.unit][]. The supported unit kinds are determined by the quota
// backend system.
//
// Here are some examples:
// * "1/min/{project}" for quota per minute per project.
//
// Note: the order of unit components is insignificant.
// The "1" at the beginning is required to follow the metric unit syntax.
string unit = 9;
// Tiered limit values. You must specify this as a key:value pair, with an
// integer value that is the maximum number of requests allowed for the
// specified unit. Currently only STANDARD is supported.
map values = 10;
// User-visible display name for this limit.
// Optional. If not set, the UI will provide a default display name based on
// the quota configuration. This field can be used to override the default
// display name generated from the configuration.
string display_name = 12;
}