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Add core protos for Google APIs service config

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bcy1028@gmail.com 2016-05-11 12:41:54 -04:00
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This folder contains the schema of the configuration model for the API services
platform.
**Note**: Protos under this directory are in Alpha status, and therefore are
subject to breaking changes.

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// Copyright 2016 Google Inc.
//
// 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;
import "google/api/annotations.proto";
option java_multiple_files = true;
option java_outer_classname = "AuthProto";
option java_package = "com.google.api";
// `Authentication` defines the authentication configuration for an API.
//
// Example for an API targeted for external use:
//
// name: calendar.googleapis.com
// authentication:
// rules:
// - selector: "*"
// oauth:
// canonical_scopes: https://www.googleapis.com/auth/calendar
//
// - selector: google.calendar.Delegate
// oauth:
// canonical_scopes: https://www.googleapis.com/auth/calendar.read
message Authentication {
// Individual rules for authentication.
repeated AuthenticationRule rules = 3;
// Defines a set of authentication providers that a service supports.
repeated AuthProvider providers = 4;
}
// Authentication rules for the service.
//
// By default, if a method has any authentication requirements, every request
// must include a valid credential matching one of the requirements.
// It's an error to include more than one kind of credential in a single
// request.
//
// If a method doesn't have any auth requirements, request credentials will be
// ignored.
//
message AuthenticationRule {
// Selects the methods to which this rule applies.
//
// Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;
// The requirements for OAuth credentials.
OAuthRequirements oauth = 2;
// Whether to allow requests without a credential. If quota is enabled, an
// API key is required for such request to pass the quota check.
//
bool allow_without_credential = 5;
// Requirements for additional authentication providers.
repeated AuthRequirement requirements = 7;
}
// Configuration for an anthentication provider, including support for
// [JSON Web Token (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
message AuthProvider {
// The unique identifier of the auth provider. It will be referred to by
// `AuthRequirement.provider_id`.
//
// Example: "bookstore_auth".
string id = 1;
// Identifies the principal that issued the JWT. See
// https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.1
// Usually a URL or an email address.
//
// Example: https://securetoken.google.com
// Example: 1234567-compute@developer.gserviceaccount.com
string issuer = 2;
// URL of the provider's public key set to validate signature of the JWT. See
// [OpenID Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata).
// Optional if the key set document:
// - can be retrieved from
// [OpenID Discovery](https://openid.net/specs/openid-connect-discovery-1_0.html
// of the issuer.
// - can be inferred from the email domain of the issuer (e.g. a Google service account).
//
// Example: https://www.googleapis.com/oauth2/v1/certs
string jwks_uri = 3;
}
// OAuth scopes are a way to define data and permissions on data. For example,
// there are scopes defined for "Read-only access to Google Calendar" and
// "Access to Cloud Platform". Users can consent to a scope for an application,
// giving it permission to access that data on their behalf.
//
// OAuth scope specifications should be fairly coarse grained; a user will need
// to see and understand the text description of what your scope means.
//
// In most cases: use one or at most two OAuth scopes for an entire family of
// products. If your product has multiple APIs, you should probably be sharing
// the OAuth scope across all of those APIs.
//
// When you need finer grained OAuth consent screens: talk with your product
// management about how developers will use them in practice.
//
// Please note that even though each of the canonical scopes is enough for a
// request to be accepted and passed to the backend, a request can still fail
// due to the backend requiring additional scopes or permissions.
//
message OAuthRequirements {
// The list of publicly documented OAuth scopes that are allowed access. An
// OAuth token containing any of these scopes will be accepted.
//
// Example:
//
// canonical_scopes: https://www.googleapis.com/auth/calendar,
// https://www.googleapis.com/auth/calendar.read
string canonical_scopes = 1;
}
// User-defined authentication requirements, including support for
// [JSON Web Token (JWT)](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32).
message AuthRequirement {
// [id][google.api.AuthProvider.id] from authentication provider.
//
// Example:
//
// provider_id: bookstore_auth
string provider_id = 1;
// The list of JWT
// [audiences](https://tools.ietf.org/html/draft-ietf-oauth-json-web-token-32#section-4.1.3).
// that are allowed to access. A JWT containing any of these audiences will
// be accepted. When this setting is absent, only JWTs with audience
// "https://[Service_name][google.api.Service.name]/[API_name][google.protobuf.Api.name]"
// will be accepted. For example, if no audiences are in the setting,
// LibraryService API will only accept JWTs with the following audience
// "https://library-example.googleapis.com/google.example.library.v1.LibraryService".
//
// Example:
//
// audiences: bookstore_android.apps.googleusercontent.com,
// bookstore_web.apps.googleusercontent.com
string audiences = 2;
}

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// Copyright 2016 Google Inc.
//
// 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 java_multiple_files = true;
option java_outer_classname = "BackendProto";
option java_package = "com.google.api";
// `Backend` defines the backend configuration for a service.
message Backend {
// A list of backend rules providing configuration for individual API
// elements.
repeated BackendRule rules = 1;
}
// A backend rule provides configuration for an individual API element.
message BackendRule {
// Selects the methods to which this rule applies.
//
// Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;
// The address of the API backend.
//
string address = 2;
// The number of seconds to wait for a response from a request. The
// default depends on the deployment context.
double deadline = 3;
}

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// Copyright 2016 Google Inc.
//
// 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;
import "google/api/annotations.proto";
import "google/api/metric.proto";
option java_multiple_files = true;
option java_outer_classname = "BillingProto";
option java_package = "com.google.api";
// Billing related configuration of the service.
//
// The following example shows how to configure metrics for billing:
//
// metrics:
// - name: library.googleapis.com/read_calls
// metric_kind: DELTA
// value_type: INT64
// - name: library.googleapis.com/write_calls
// metric_kind: DELTA
// value_type: INT64
// billing:
// metrics:
// - library.googleapis.com/read_calls
// - library.googleapis.com/write_calls
//
// The next example shows how to enable billing status check and customize the
// check behavior. It makes sure billing status check is included in the `Check`
// method of [Service Control API](https://cloud.google.com/service-control/).
// In the example, "google.storage.Get" method can be served when the billing
// status is either `current` or `delinquent`, while "google.storage.Write"
// method can only be served when the billing status is `current`:
//
// billing:
// rules:
// - selector: google.storage.Get
// allowed_statuses:
// - current
// - delinquent
// - selector: google.storage.Write
// allowed_statuses: current
//
// Mostly services should only allow `current` status when serving requests.
// In addition, services can choose to allow both `current` and `delinquent`
// statuses when serving read-only requests to resources. If there's no
// matching selector for operation, no billing status check will be performed.
//
message Billing {
// Names of the metrics to report to billing. Each name must
// be defined in [Service.metrics][google.api.Service.metrics] section.
repeated string metrics = 1;
// A list of billing status rules for configuring billing status check.
repeated BillingStatusRule rules = 5;
}
// Defines the billing status requirements for operations.
//
// When used with
// [Service Control API](https://cloud.google.com/service-control/), the
// following statuses are supported:
//
// - **current**: the associated billing account is up to date and capable of
// paying for resource usages.
// - **delinquent**: the associated billing account has a correctable problem,
// such as late payment.
//
// Mostly services should only allow `current` status when serving requests.
// In addition, services can choose to allow both `current` and `delinquent`
// statuses when serving read-only requests to resources. If the list of
// allowed_statuses is empty, it means no billing requirement.
//
message BillingStatusRule {
// Selects the operation names to which this rule applies.
// Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;
// Allowed billing statuses. The billing status check passes if the actual
// billing status matches any of the provided values here.
repeated string allowed_statuses = 2;
}

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// Copyright 2016 Google Inc.
//
// 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 java_multiple_files = true;
option java_outer_classname = "ConsumerProto";
option java_package = "com.google.api";
// A descriptor for defining project properties for a service. One service may
// have many consumer projects, and the service may want to behave differently
// depending on some properties on the project. For example, a project may be
// associated with a school, or a business, or a government agency, a business
// type property on the project may affect how a service responds to the client.
// This descriptor defines which properties are allowed to be set on a project.
//
// Example:
//
// project_properties:
// properties:
// - name: NO_WATERMARK
// type: BOOL
// description: Allows usage of the API without watermarks.
// - name: EXTENDED_TILE_CACHE_PERIOD
// type: INT64
message ProjectProperties {
// List of per consumer project-specific properties.
repeated Property properties = 1;
}
// Defines project properties.
//
// API services can define properties that can be assigned to consumer projects
// so that backends can perform response customization without having to make
// additional calls or maintain additional storage. For example, Maps API
// defines properties that controls map tile cache period, or whether to embed a
// watermark in a result.
//
// These values can be set via API producer console. Only API providers can
// define and set these properties.
message Property {
// Supported data type of the property values
enum PropertyType {
// The type is unspecified, and will result in an error.
UNSPECIFIED = 0;
// The type is `int64`.
INT64 = 1;
// The type is `bool`.
BOOL = 2;
// The type is `string`.
STRING = 3;
// The type is 'double'.
DOUBLE = 4;
}
// The name of the property (a.k.a key).
string name = 1;
// The type of this property.
PropertyType type = 2;
// The description of the property
string description = 3;
}

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// Copyright 2016 Google Inc.
//
// 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 java_multiple_files = true;
option java_outer_classname = "ContextProto";
option java_package = "com.google.api";
// `Context` defines which contexts an API requests.
//
// Example:
//
// context:
// rules:
// - selector: "*"
// requested:
// - google.rpc.context.ProjectContext
// - google.rpc.context.OriginContext
//
// The above specifies that all methods in the API request
// `google.rpc.context.ProjectContext` and
// `google.rpc.context.OriginContext`.
//
// Available context types are defined in package
// `google.rpc.context`.
message Context {
// List of rules for context, applicable to methods.
repeated ContextRule rules = 1;
}
// A context rule provides information about the context for an individual API
// element.
message ContextRule {
// Selects the methods to which this rule applies.
//
// Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;
// A list of full type names of requested contexts.
repeated string requested = 2;
// A list of full type names of provided contexts.
repeated string provided = 3;
}

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// Copyright 2016 Google Inc.
//
// 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 java_multiple_files = true;
option java_outer_classname = "ControlProto";
option java_package = "com.google.api";
// Selects and configures the service controller used by the service. The
// service controller handles features like abuse, quota, billing, logging,
// monitoring, etc.
//
message Control {
// The service control environment to use. If empty, no control plane
// feature (like quota and billing) will be enabled.
string environment = 1;
}

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// Copyright 2016 Google Inc.
//
// 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 java_multiple_files = true;
option java_outer_classname = "DocumentationProto";
option java_package = "com.google.api";
// `Documentation` provides the information for describing a service.
//
// Example:
// <pre><code>documentation:
// summary: >
// The Google Calendar API gives access
// to most calendar features.
// pages:
// - name: Overview
// content: &#40;== include google/foo/overview.md ==&#41;
// - name: Tutorial
// content: &#40;== include google/foo/tutorial.md ==&#41;
// subpages;
// - name: Java
// content: &#40;== include google/foo/tutorial_java.md ==&#41;
// rules:
// - selector: google.calendar.Calendar.Get
// description: >
// ...
// - selector: google.calendar.Calendar.Put
// description: >
// ...
// </code></pre>
// Documentation is provided in markdown syntax. In addition to
// standard markdown features, definition lists, tables and fenced
// code blocks are supported. Section headers can be provided and are
// interpreted relative to the section nesting of the context where
// a documentation fragment is embedded.
//
// Documentation from the IDL is merged with documentation defined
// via the config at normalization time, where documentation provided
// by config rules overrides IDL provided.
//
// A number of constructs specific to the API platform are supported
// in documentation text.
//
// In order to reference a proto element, the following
// notation can be used:
// <pre><code>&#91;fully.qualified.proto.name]&#91;]</code></pre>
// To override the display text used for the link, this can be used:
// <pre><code>&#91;display text]&#91;fully.qualified.proto.name]</code></pre>
// Text can be excluded from doc using the following notation:
// <pre><code>&#40;-- internal comment --&#41;</code></pre>
// Comments can be made conditional using a visibility label. The below
// text will be only rendered if the `BETA` label is available:
// <pre><code>&#40;--BETA: comment for BETA users --&#41;</code></pre>
// A few directives are available in documentation. Note that
// directives must appear on a single line to be properly
// identified. The `include` directive includes a markdown file from
// an external source:
// <pre><code>&#40;== include path/to/file ==&#41;</code></pre>
// The `resource_for` directive marks a message to be the resource of
// a collection in REST view. If it is not specified, tools attempt
// to infer the resource from the operations in a collection:
// <pre><code>&#40;== resource_for v1.shelves.books ==&#41;</code></pre>
// The directive `suppress_warning` does not directly affect documentation
// and is documented together with service config validation.
message Documentation {
// A short summary of what the service does. Can only be provided by
// plain text.
string summary = 1;
// The top level pages for the documentation set.
repeated Page pages = 5;
// Documentation rules for individual elements of the service.
repeated DocumentationRule rules = 3;
// The URL to the root of documentation.
string documentation_root_url = 4;
// Declares a single overview page. For example:
// <pre><code>documentation:
// summary: ...
// overview: &#40;== include overview.md ==&#41;
// </code></pre>
// This is a shortcut for the following declaration (using pages style):
// <pre><code>documentation:
// summary: ...
// pages:
// - name: Overview
// content: &#40;== include overview.md ==&#41;
// </code></pre>
// Note: you cannot specify both `overview` field and `pages` field.
string overview = 2;
}
// A documentation rule provides information about individual API elements.
message DocumentationRule {
// The selector is a comma-separated list of patterns. Each pattern is a
// qualified name of the element which may end in "*", indicating a wildcard.
// Wildcards are only allowed at the end and for a whole component of the
// qualified name, i.e. "foo.*" is ok, but not "foo.b*" or "foo.*.bar". To
// specify a default for all applicable elements, the whole pattern "*"
// is used.
string selector = 1;
// Description of the selected API(s).
string description = 2;
// Deprecation description of the selected element(s). It can be provided if an
// element is marked as `deprecated`.
string deprecation_description = 3;
}
// Represents a documentation page. A page can contain subpages to represent
// nested documentation set structure.
message Page {
// The name of the page. It will be used as an identity of the page to
// generate URI of the page, text of the link to this page in navigation,
// etc. The full page name (start from the root page name to this page
// concatenated with `.`) can be used as reference to the page in your
// documentation. For example:
// <pre><code>pages:
// - name: Tutorial
// content: &#40;== include tutorial.md ==&#41;
// subpages:
// - name: Java
// content: &#40;== include tutorial_java.md ==&#41;
// </code></pre>
// You can reference `Java` page using Markdown reference link syntax:
// `[Java][Tutorial.Java]`.
string name = 1;
// The Markdown content of the page. You can use <code>&#40;== include {path} ==&#41;</code>
// to include content from a Markdown file.
string content = 2;
// Subpages of this page. The order of subpages specified here will be
// honored in the generated docset.
repeated Page subpages = 3;
}

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// Copyright 2016 Google Inc.
//
// 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;
import "google/api/label.proto";
option java_multiple_files = true;
option java_outer_classname = "LogProto";
option java_package = "com.google.api";
// A description of a log type. Example in YAML format:
//
// - name: library.googleapis.com/activity_history
// description: The history of borrowing and returning library items.
// display_name: Activity
// labels:
// - key: /customer_id
// description: Identifier of a library customer
message LogDescriptor {
// The name of the log. It must be less than 512 characters long and can
// include the following characters: upper- and lower-case alphanumeric
// characters [A-Za-z0-9], and punctuation characters including
// slash, underscore, hyphen, period [/_-.].
string name = 1;
// The set of labels that are available to describe a specific log entry.
// Runtime requests that contain labels not specified here are
// considered invalid.
repeated LabelDescriptor labels = 2;
// A human-readable description of this log. This information appears in
// the documentation and can contain details.
string description = 3;
// The human-readable name for this log. This information appears on
// the user interface and should be concise.
string display_name = 4;
}

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// Copyright 2016 Google Inc.
//
// 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;
import "google/api/annotations.proto";
option java_multiple_files = true;
option java_outer_classname = "LoggingProto";
option java_package = "com.google.api";
// Logging configuration of the service.
//
// The following example shows how to configure logs to be sent to the
// producer and consumer projects. In the example,
// the `library.googleapis.com/activity_history` log is
// sent to both the producer and consumer projects, whereas
// the `library.googleapis.com/purchase_history` log is only sent to the
// producer project:
//
// monitored_resources:
// - type: library.googleapis.com/branch
// labels:
// - key: /city
// description: The city where the library branch is located in.
// - key: /name
// description: The name of the branch.
// logs:
// - name: library.googleapis.com/activity_history
// labels:
// - key: /customer_id
// - name: library.googleapis.com/purchase_history
// logging:
// producer_destinations:
// - monitored_resource: library.googleapis.com/branch
// logs:
// - library.googleapis.com/activity_history
// - library.googleapis.com/purchase_history
// consumer_destinations:
// - monitored_resource: library.googleapis.com/branch
// logs:
// - library.googleapis.com/activity_history
//
message Logging {
// Configuration of a specific logging destination (the producer project
// or the consumer project).
message LoggingDestination {
// The monitored resource type. The type must be defined in
// [Service.monitored_resources][google.api.Service.monitored_resources] section.
string monitored_resource = 3;
// Names of the logs to be sent to this destination. Each name must
// be defined in the [Service.logs][google.api.Service.logs] section.
repeated string logs = 1;
}
// Logging configurations for sending logs to the producer project.
// There can be multiple producer destinations, each one must have a
// different monitored resource type. A log can be used in at most
// one producer destination.
repeated LoggingDestination producer_destinations = 1;
// Logging configurations for sending logs to the consumer project.
// There can be multiple consumer destinations, each one must have a
// different monitored resource type. A log can be used in at most
// one consumer destination.
repeated LoggingDestination consumer_destinations = 2;
}

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// Copyright 2016 Google Inc.
//
// 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;
import "google/api/label.proto";
option java_multiple_files = true;
option java_outer_classname = "MetricProto";
option java_package = "com.google.api";
// Defines a metric type and its schema.
message MetricDescriptor {
// The kind of measurement. It describes how the data is reported.
enum MetricKind {
// Do not use this default value.
METRIC_KIND_UNSPECIFIED = 0;
// Instantaneous measurements of a varying quantity.
GAUGE = 1;
// Changes over non-overlapping time intervals.
DELTA = 2;
// Cumulative value over time intervals that can overlap.
// The overlapping intervals must have the same start time.
CUMULATIVE = 3;
}
// The value type of a metric.
enum ValueType {
// Do not use this default value.
VALUE_TYPE_UNSPECIFIED = 0;
// The value is a boolean.
// This value type can be used only if the metric kind is `GAUGE`.
BOOL = 1;
// The value is a signed 64-bit integer.
INT64 = 2;
// The value is a double precision floating point number.
DOUBLE = 3;
// The value is a text string.
// This value type can be used only if the metric kind is `GAUGE`.
STRING = 4;
// The value is a [`Distribution`][google.api.Distribution].
DISTRIBUTION = 5;
// The value is money.
MONEY = 6;
}
// Resource name. The format of the name may vary between different
// implementations. For examples:
//
// projects/{project_id}/metricDescriptors/{type=**}
// metricDescriptors/{type=**}
string name = 1;
// The metric type including a DNS name prefix, for example
// `"compute.googleapis.com/instance/cpu/utilization"`. Metric types
// should use a natural hierarchical grouping such as the following:
//
// compute.googleapis.com/instance/cpu/utilization
// compute.googleapis.com/instance/disk/read_ops_count
// compute.googleapis.com/instance/network/received_bytes_count
//
// Note that if the metric type changes, the monitoring data will be
// discontinued, and anything depends on it will break, such as monitoring
// dashboards, alerting rules and quota limits. Therefore, once a metric has
// been published, its type should be immutable.
string type = 8;
// The set of labels that can be used to describe a specific instance of this
// metric type. For example, the
// `compute.googleapis.com/instance/network/received_bytes_count` metric type
// has a label, `loadbalanced`, that specifies whether the traffic was
// received through a load balanced IP address.
repeated LabelDescriptor labels = 2;
// Whether the metric records instantaneous values, changes to a value, etc.
MetricKind metric_kind = 3;
// Whether the measurement is an integer, a floating-point number, etc.
ValueType value_type = 4;
// The unit in which the metric value is reported. It is only applicable
// if the `value_type` is `INT64`, `DOUBLE`, or `DISTRIBUTION`. The
// supported units are a subset of [The Unified Code for Units of
// Measure](http://unitsofmeasure.org/ucum.html) standard:
//
// **Basic units (UNIT)**
//
// * `bit` bit
// * `By` byte
// * `s` second
// * `min` minute
// * `h` hour
// * `d` day
//
// **Prefixes (PREFIX)**
//
// * `k` kilo (10**3)
// * `M` mega (10**6)
// * `G` giga (10**9)
// * `T` tera (10**12)
// * `P` peta (10**15)
// * `E` exa (10**18)
// * `Z` zetta (10**21)
// * `Y` yotta (10**24)
// * `m` milli (10**-3)
// * `u` micro (10**-6)
// * `n` nano (10**-9)
// * `p` pico (10**-12)
// * `f` femto (10**-15)
// * `a` atto (10**-18)
// * `z` zepto (10**-21)
// * `y` yocto (10**-24)
// * `Ki` kibi (2**10)
// * `Mi` mebi (2**20)
// * `Gi` gibi (2**30)
// * `Ti` tebi (2**40)
//
// **Grammar**
//
// The grammar includes the dimensionless unit `1`, such as `1/s`.
//
// The grammar also includes these connectors:
//
// * `/` division (as an infix operator, e.g. `1/s`).
// * `.` multiplication (as an infix operator, e.g. `GBy.d`)
//
// The grammar for a unit is as follows:
//
// Expression = Component { "." Component } { "/" Component } ;
//
// Component = [ PREFIX ] UNIT [ Annotation ]
// | Annotation
// | "1"
// ;
//
// Annotation = "{" NAME "}" ;
//
// Notes:
//
// * `Annotation` is just a comment if it follows a `UNIT` and is
// equivalent to `1` if it is used alone. For examples,
// `{requests}/s == 1/s`, `By{transmitted}/s == By/s`.
// * `NAME` is a sequence of non-blank printable ASCII characters not
// containing '{' or '}'.
string unit = 5;
// A detailed description of the metric, which can be used in documentation.
string description = 6;
// A concise name for the metric, which can be displayed in user interfaces.
// Use sentence case without an ending period, for example "Request count".
string display_name = 7;
}
// A specific metric identified by specifying values for all of the
// labels of a [`MetricDescriptor`][google.api.MetricDescriptor].
message Metric {
// An existing metric type, see [google.api.MetricDescriptor][google.api.MetricDescriptor].
// For example, `compute.googleapis.com/instance/cpu/usage_time`.
string type = 3;
// The set of labels that uniquely identify a metric. To specify a
// metric, all labels enumerated in the `MetricDescriptor` must be
// assigned values.
map<string, string> labels = 2;
}

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// Copyright 2016 Google Inc.
//
// 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;
import "google/api/annotations.proto";
option java_multiple_files = true;
option java_outer_classname = "MonitoringProto";
option java_package = "com.google.api";
// Monitoring configuration of the service.
//
// The example below shows how to configure monitored resources and metrics
// for monitoring. In the example, a monitored resource and two metrics are
// defined. The `library.googleapis.com/book/returned_count` metric is sent
// to both producer and consumer projects, whereas the
// `library.googleapis.com/book/overdue_count` metric is only sent to the
// consumer project.
//
// monitored_resources:
// - type: library.googleapis.com/branch
// labels:
// - key: /city
// description: The city where the library branch is located in.
// - key: /name
// description: The name of the branch.
// metrics:
// - name: library.googleapis.com/book/returned_count
// metric_kind: DELTA
// value_type: INT64
// labels:
// - key: /customer_id
// - name: library.googleapis.com/book/overdue_count
// metric_kind: GAUGE
// value_type: INT64
// labels:
// - key: /customer_id
// monitoring:
// producer_destinations:
// - monitored_resource: library.googleapis.com/branch
// metrics:
// - library.googleapis.com/book/returned_count
// consumer_destinations:
// - monitored_resource: library.googleapis.com/branch
// metrics:
// - library.googleapis.com/book/returned_count
// - library.googleapis.com/book/overdue_count
//
message Monitoring {
// Configuration of a specific monitoring destination (the producer project
// or the consumer project).
message MonitoringDestination {
// The monitored resource type. The type must be defined in
// [Service.monitored_resources][google.api.Service.monitored_resources] section.
string monitored_resource = 1;
// Names of the metrics to report to this monitoring destination.
// Each name must be defined in [Service.metrics][google.api.Service.metrics] section.
repeated string metrics = 2;
}
// Monitoring configurations for sending metrics to the producer project.
// There can be multiple producer destinations, each one must have a
// different monitored resource type. A metric can be used in at most
// one producer destination.
repeated MonitoringDestination producer_destinations = 1;
// Monitoring configurations for sending metrics to the consumer project.
// There can be multiple consumer destinations, each one must have a
// different monitored resource type. A metric can be used in at most
// one consumer destination.
repeated MonitoringDestination consumer_destinations = 2;
}

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// Copyright 2016 Google Inc.
//
// 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;
import "google/api/annotations.proto";
import "google/api/auth.proto";
import "google/api/backend.proto";
import "google/api/billing.proto";
import "google/api/consumer.proto";
import "google/api/context.proto";
import "google/api/control.proto";
import "google/api/documentation.proto";
import "google/api/http.proto";
import "google/api/label.proto";
import "google/api/log.proto";
import "google/api/logging.proto";
import "google/api/metric.proto";
import "google/api/monitored_resource.proto";
import "google/api/monitoring.proto";
import "google/api/system_parameter.proto";
import "google/api/usage.proto";
import "google/protobuf/any.proto";
import "google/protobuf/api.proto";
import "google/protobuf/type.proto";
import "google/protobuf/wrappers.proto";
option java_multiple_files = true;
option java_outer_classname = "ServiceProto";
option java_package = "com.google.api";
// `Service` is the root object of the configuration schema. It
// describes basic information like the name of the service and the
// exposed API interfaces, and delegates other aspects to configuration
// sub-sections.
//
// Example:
//
// type: google.api.Service
// config_version: 1
// name: calendar.googleapis.com
// title: Google Calendar API
// apis:
// - name: google.calendar.Calendar
// backend:
// rules:
// - selector: "*"
// address: calendar.example.com
message Service {
// The version of the service configuration. The config version may
// influence interpretation of the configuration, for example, to
// determine defaults. This is documented together with applicable
// options. The current default for the config version itself is `3`.
google.protobuf.UInt32Value config_version = 20;
// The DNS address at which this service is available,
// e.g. `calendar.googleapis.com`.
string name = 1;
// A unique ID for a specific instance of this message, typically assigned
// by the client for tracking purpose. If empty, the server may choose to
// generate one instead.
string id = 33;
// The product title associated with this service.
string title = 2;
// The id of the Google developer project that owns the service.
// Members of this project can manage the service configuration,
// manage consumption of the service, etc.
string producer_project_id = 22;
// A list of API interfaces exported by this service. Only the `name` field
// of the [google.protobuf.Api][google.protobuf.Api] needs to be provided by the configuration
// author, as the remaining fields will be derived from the IDL during the
// normalization process. It is an error to specify an API interface here
// which cannot be resolved against the associated IDL files.
repeated google.protobuf.Api apis = 3;
// A list of all proto message types included in this API service.
// Types referenced directly or indirectly by the `apis` are
// automatically included. Messages which are not referenced but
// shall be included, such as types used by the `google.protobuf.Any` type,
// should be listed here by name. Example:
//
// types:
// - name: google.protobuf.Int32
repeated google.protobuf.Type types = 4;
// A list of all enum types included in this API service. Enums
// referenced directly or indirectly by the `apis` are automatically
// included. Enums which are not referenced but shall be included
// should be listed here by name. Example:
//
// enums:
// - name: google.someapi.v1.SomeEnum
repeated google.protobuf.Enum enums = 5;
// Additional API documentation.
Documentation documentation = 6;
// API backend configuration.
Backend backend = 8;
// HTTP configuration.
Http http = 9;
// Auth configuration.
Authentication authentication = 11;
// Context configuration.
Context context = 12;
// Configuration controlling usage of this service.
Usage usage = 15;
// Configuration of per-consumer project properties.
ProjectProperties project_properties = 17;
// Configuration for the service control plane.
Control control = 21;
// Defines the logs used by this service.
repeated LogDescriptor logs = 23;
// Defines the metrics used by this service.
repeated MetricDescriptor metrics = 24;
// Defines the monitored resources used by this service. This is required
// by the [Service.monitoring][google.api.Service.monitoring] and [Service.logging][google.api.Service.logging] configurations.
//
repeated MonitoredResourceDescriptor monitored_resources = 25;
// Billing configuration of the service.
Billing billing = 26;
// Logging configuration of the service.
Logging logging = 27;
// Monitoring configuration of the service.
Monitoring monitoring = 28;
// Configuration for system parameters.
SystemParameters system_parameters = 29;
}

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// Copyright 2016 Google Inc.
//
// 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 java_multiple_files = true;
option java_outer_classname = "SystemParameterProto";
option java_package = "com.google.api";
// ### System parameter configuration
//
// A system parameter is a special kind of parameter defined by the API
// system, not by an individual API. It is typically mapped to an HTTP header
// and/or a URL query parameter. This configuration specifies which methods
// change the names of the system parameters.
message SystemParameters {
// Define system parameters.
//
// The parameters defined here will override the default parameters
// implemented by the system. If this field is missing from the service
// config, default system parameters will be used. Default system parameters
// and names is implementation-dependent.
//
// Example: define api key and alt name for all methods
//
// SystemParameters
// rules:
// - selector: "*"
// parameters:
// - name: api_key
// url_query_parameter: api_key
// - name: alt
// http_header: Response-Content-Type
//
// Example: define 2 api key names for a specific method.
//
// SystemParameters
// rules:
// - selector: "/ListShelves"
// parameters:
// - name: api_key
// http_header: Api-Key1
// - name: api_key
// http_header: Api-Key2
repeated SystemParameterRule rules = 1;
}
// Define a system parameter rule mapping system parameter definitions to
// methods.
message SystemParameterRule {
// Selects the methods to which this rule applies. Use '*' to indicate all
// methods in all APIs.
//
// Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;
// Define parameters. Multiple names may be defined for a parameter.
// For a given method call, only one of them should be used. If multiple
// names are used the behavior is implementation-dependent.
// If none of the specified names are present the behavior is
// parameter-dependent.
repeated SystemParameter parameters = 2;
}
// Define a parameter's name and location. The parameter may be passed as either
// an HTTP header or a URL query parameter, and if both are passed the behavior
// is implementation-dependent.
message SystemParameter {
// Define the name of the parameter, such as "api_key", "alt", "callback",
// and etc. It is case sensitive.
string name = 1;
// Define the HTTP header name to use for the parameter. It is case
// insensitive.
string http_header = 2;
// Define the URL query parameter name to use for the parameter. It is case
// sensitive.
string url_query_parameter = 3;
}

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// Copyright 2016 Google Inc.
//
// 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 java_multiple_files = true;
option java_outer_classname = "UsageProto";
option java_package = "com.google.api";
// Configuration controlling usage of a service.
message Usage {
// Service access types.
//
// Access to restricted API features is always controlled by
// [visibility][google.api.Visibility], independent of the ServiceAccess type.
//
enum ServiceAccess {
// The service can only be seen/used by users identified in the service's
// access control policy.
//
// If the service has not been whitelisted by your domain administrator
// for out-of-org publishing, then this mode will be treated like
// ORG_RESTRICTED.
RESTRICTED = 0;
// The service can be seen/used by anyone.
//
// If the service has not been whitelisted by your domain administrator
// for out-of-org publishing, then this mode will be treated like
// ORG_PUBLIC.
//
// The discovery document for the service will also be public and allow
// unregistered access.
PUBLIC = 1;
// The service can be seen/used by users identified in the service's
// access control policy and they are within the organization that owns the
// service.
//
// Access is further constrained to the group
// controlled by the administrator of the project/org that owns the
// service.
ORG_RESTRICTED = 2;
// The service can be seen/used by the group of users controlled by the
// administrator of the project/org that owns the service.
ORG_PUBLIC = 3;
}
// Controls which users can see or activate the service.
ServiceAccess service_access = 4;
// Requirements that must be satisfied before a consumer project can use the
// service. Each requirement is of the form <service.name>/<requirement-id>;
// for example 'serviceusage.googleapis.com/billing-enabled'.
repeated string requirements = 1;
// Services that must be activated in order for this service to be used.
// The set of services activated as a result of these relations are all
// activated in parallel with no guaranteed order of activation.
// Each string is a service name, e.g. `calendar.googleapis.com`.
repeated string depends_on_services = 2;
// Services that must be contacted before a consumer can begin using the
// service. Each service will be contacted in sequence, and, if any activation
// call fails, the entire activation will fail. Each hook is of the form
// <service.name>/<hook-id>, where <hook-id> is optional; for example:
// 'robotservice.googleapis.com/default'.
repeated string activation_hooks = 3;
// Services that must be contacted before a consumer can deactivate a
// service. Each service will be contacted in sequence, and, if any
// deactivation call fails, the entire deactivation will fail. Each hook is
// of the form <service.name>/<hook-id>, where <hook-id> is optional; for
// example:
// 'compute.googleapis.com/'.
repeated string deactivation_hooks = 5;
// Individual rules for configuring usage on selected methods.
repeated UsageRule rules = 6;
}
// Usage configuration rules for the service.
//
// NOTE: Under development.
//
//
// Use this rule to configure unregistered calls for the service. Unregistered
// calls are calls that do not contain consumer project identity.
// (Example: calls that do not contain an API key).
// By default, API methods do not allow unregistered calls, and each method call
// must be identified by a consumer project identity. Use this rule to
// allow/disallow unregistered calls.
//
// Example of an API that wants to allow unregistered calls for entire service.
//
// usage:
// rules:
// - selector: "*"
// allow_unregistered_calls: true
//
// Example of a method that wants to allow unregistered calls.
//
// usage:
// rules:
// - selector: "google.example.library.v1.LibraryService.CreateBook"
// allow_unregistered_calls: true
message UsageRule {
// Selects the methods to which this rule applies. Use '*' to indicate all
// methods in all APIs.
//
// Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;
// True, if the method allows unregistered calls; false otherwise.
bool allow_unregistered_calls = 2;
}