Project import generated by Copybara.
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+// Copyright 2019 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;
+
+import "google/protobuf/descriptor.proto";
+
+option go_package = "google.golang.org/genproto/googleapis/api/annotations;annotations";
+option java_multiple_files = true;
+option java_outer_classname = "FieldBehaviorProto";
+option java_package = "com.google.api";
+option objc_class_prefix = "GAPI";
+
+extend google.protobuf.FieldOptions {
+ // A designation of a specific field behavior (required, output only, etc.)
+ // in protobuf messages.
+ //
+ // Examples:
+ //
+ // string name = 1 [(google.api.field_behavior) = REQUIRED];
+ // State state = 1 [(google.api.field_behavior) = OUTPUT_ONLY];
+ // google.protobuf.Duration ttl = 1
+ // [(google.api.field_behavior) = INPUT_ONLY];
+ // google.protobuf.Timestamp expire_time = 1
+ // [(google.api.field_behavior) = OUTPUT_ONLY,
+ // (google.api.field_behavior) = IMMUTABLE];
+ repeated google.api.FieldBehavior field_behavior = 1052;
+}
+
+// An indicator of the behavior of a given field (for example, that a field
+// is required in requests, or given as output but ignored as input).
+// This **does not** change the behavior in protocol buffers itself; it only
+// denotes the behavior and may affect how API tooling handles the field.
+//
+// Note: This enum **may** receive new values in the future.
+enum FieldBehavior {
+ // Conventional default for enums. Do not use this.
+ FIELD_BEHAVIOR_UNSPECIFIED = 0;
+
+ // Specifically denotes a field as optional.
+ // While all fields in protocol buffers are optional, this may be specified
+ // for emphasis if appropriate.
+ OPTIONAL = 1;
+
+ // Denotes a field as required.
+ // This indicates that the field **must** be provided as part of the request,
+ // and failure to do so will cause an error (usually `INVALID_ARGUMENT`).
+ REQUIRED = 2;
+
+ // Denotes a field as output only.
+ // This indicates that the field is provided in responses, but including the
+ // field in a request does nothing (the server *must* ignore it and
+ // *must not* throw an error as a result of the field's presence).
+ OUTPUT_ONLY = 3;
+
+ // Denotes a field as input only.
+ // This indicates that the field is provided in requests, and the
+ // corresponding field is not included in output.
+ INPUT_ONLY = 4;
+
+ // Denotes a field as immutable.
+ // This indicates that the field may be set once in a request to create a
+ // resource, but may not be changed thereafter.
+ IMMUTABLE = 5;
+}
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