// Copyright 2020 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.cloud.pubsublite.v1;

import "google/api/annotations.proto";
import "google/api/client.proto";
import "google/api/field_behavior.proto";
import "google/api/resource.proto";
import "google/cloud/pubsublite/v1/common.proto";
import "google/protobuf/empty.proto";
import "google/protobuf/field_mask.proto";

option go_package = "google.golang.org/genproto/googleapis/cloud/pubsublite/v1;pubsublite";
option java_multiple_files = true;
option java_outer_classname = "AdminProto";
option java_package = "com.google.cloud.pubsublite.proto";

// The service that a client application uses to manage topics and
// subscriptions, such creating, listing, and deleting topics and subscriptions.
service AdminService {
  option (google.api.default_host) = "pubsublite.googleapis.com";
  option (google.api.oauth_scopes) = "https://www.googleapis.com/auth/cloud-platform";

  // Creates a new topic.
  rpc CreateTopic(CreateTopicRequest) returns (Topic) {
    option (google.api.http) = {
      post: "/v1/admin/{parent=projects/*/locations/*}/topics"
      body: "topic"
    };
    option (google.api.method_signature) = "parent,topic,topic_id";
  }

  // Returns the topic configuration.
  rpc GetTopic(GetTopicRequest) returns (Topic) {
    option (google.api.http) = {
      get: "/v1/admin/{name=projects/*/locations/*/topics/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Returns the partition information for the requested topic.
  rpc GetTopicPartitions(GetTopicPartitionsRequest) returns (TopicPartitions) {
    option (google.api.http) = {
      get: "/v1/admin/{name=projects/*/locations/*/topics/*}/partitions"
    };
    option (google.api.method_signature) = "name";
  }

  // Returns the list of topics for the given project.
  rpc ListTopics(ListTopicsRequest) returns (ListTopicsResponse) {
    option (google.api.http) = {
      get: "/v1/admin/{parent=projects/*/locations/*}/topics"
    };
    option (google.api.method_signature) = "parent";
  }

  // Updates properties of the specified topic.
  rpc UpdateTopic(UpdateTopicRequest) returns (Topic) {
    option (google.api.http) = {
      patch: "/v1/admin/{topic.name=projects/*/locations/*/topics/*}"
      body: "topic"
    };
    option (google.api.method_signature) = "topic,update_mask";
  }

  // Deletes the specified topic.
  rpc DeleteTopic(DeleteTopicRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      delete: "/v1/admin/{name=projects/*/locations/*/topics/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Lists the subscriptions attached to the specified topic.
  rpc ListTopicSubscriptions(ListTopicSubscriptionsRequest) returns (ListTopicSubscriptionsResponse) {
    option (google.api.http) = {
      get: "/v1/admin/{name=projects/*/locations/*/topics/*}/subscriptions"
    };
    option (google.api.method_signature) = "name";
  }

  // Creates a new subscription.
  rpc CreateSubscription(CreateSubscriptionRequest) returns (Subscription) {
    option (google.api.http) = {
      post: "/v1/admin/{parent=projects/*/locations/*}/subscriptions"
      body: "subscription"
    };
    option (google.api.method_signature) = "parent,subscription,subscription_id";
  }

  // Returns the subscription configuration.
  rpc GetSubscription(GetSubscriptionRequest) returns (Subscription) {
    option (google.api.http) = {
      get: "/v1/admin/{name=projects/*/locations/*/subscriptions/*}"
    };
    option (google.api.method_signature) = "name";
  }

  // Returns the list of subscriptions for the given project.
  rpc ListSubscriptions(ListSubscriptionsRequest) returns (ListSubscriptionsResponse) {
    option (google.api.http) = {
      get: "/v1/admin/{parent=projects/*/locations/*}/subscriptions"
    };
    option (google.api.method_signature) = "parent";
  }

  // Updates properties of the specified subscription.
  rpc UpdateSubscription(UpdateSubscriptionRequest) returns (Subscription) {
    option (google.api.http) = {
      patch: "/v1/admin/{subscription.name=projects/*/locations/*/subscriptions/*}"
      body: "subscription"
    };
    option (google.api.method_signature) = "subscription,update_mask";
  }

  // Deletes the specified subscription.
  rpc DeleteSubscription(DeleteSubscriptionRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      delete: "/v1/admin/{name=projects/*/locations/*/subscriptions/*}"
    };
    option (google.api.method_signature) = "name";
  }
}

// Request for CreateTopic.
message CreateTopicRequest {
  // Required. The parent location in which to create the topic.
  // Structured like `projects/{project_number}/locations/{location}`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "locations.googleapis.com/Location"
    }
  ];

  // Required. Configuration of the topic to create. Its `name` field is ignored.
  Topic topic = 2 [(google.api.field_behavior) = REQUIRED];

  // Required. The ID to use for the topic, which will become the final component of
  // the topic's name.
  //
  // This value is structured like: `my-topic-name`.
  string topic_id = 3 [(google.api.field_behavior) = REQUIRED];
}

// Request for GetTopic.
message GetTopicRequest {
  // Required. The name of the topic whose configuration to return.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "pubsublite.googleapis.com/Topic"
    }
  ];
}

// Request for GetTopicPartitions.
message GetTopicPartitionsRequest {
  // Required. The topic whose partition information to return.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "pubsublite.googleapis.com/Topic"
    }
  ];
}

// Response for GetTopicPartitions.
message TopicPartitions {
  // The number of partitions in the topic.
  int64 partition_count = 1;
}

// Request for ListTopics.
message ListTopicsRequest {
  // Required. The parent whose topics are to be listed.
  // Structured like `projects/{project_number}/locations/{location}`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "locations.googleapis.com/Location"
    }
  ];

  // The maximum number of topics to return. The service may return fewer than
  // this value.
  // If unset or zero, all topics for the parent will be returned.
  int32 page_size = 2;

  // A page token, received from a previous `ListTopics` call.
  // Provide this to retrieve the subsequent page.
  //
  // When paginating, all other parameters provided to `ListTopics` must match
  // the call that provided the page token.
  string page_token = 3;
}

// Response for ListTopics.
message ListTopicsResponse {
  // The list of topic in the requested parent. The order of the topics is
  // unspecified.
  repeated Topic topics = 1;

  // A token that can be sent as `page_token` to retrieve the next page of
  // results. If this field is omitted, there are no more results.
  string next_page_token = 2;
}

// Request for UpdateTopic.
message UpdateTopicRequest {
  // Required. The topic to update. Its `name` field must be populated.
  Topic topic = 1 [(google.api.field_behavior) = REQUIRED];

  // Required. A mask specifying the topic fields to change.
  google.protobuf.FieldMask update_mask = 2 [(google.api.field_behavior) = REQUIRED];
}

// Request for DeleteTopic.
message DeleteTopicRequest {
  // Required. The name of the topic to delete.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "pubsublite.googleapis.com/Topic"
    }
  ];
}

// Request for ListTopicSubscriptions.
message ListTopicSubscriptionsRequest {
  // Required. The name of the topic whose subscriptions to list.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "pubsublite.googleapis.com/Topic"
    }
  ];

  // The maximum number of subscriptions to return. The service may return fewer
  // than this value.
  // If unset or zero, all subscriptions for the given topic will be returned.
  int32 page_size = 2;

  // A page token, received from a previous `ListTopicSubscriptions` call.
  // Provide this to retrieve the subsequent page.
  //
  // When paginating, all other parameters provided to `ListTopicSubscriptions`
  // must match the call that provided the page token.
  string page_token = 3;
}

// Response for ListTopicSubscriptions.
message ListTopicSubscriptionsResponse {
  // The names of subscriptions attached to the topic. The order of the
  // subscriptions is unspecified.
  repeated string subscriptions = 1;

  // A token that can be sent as `page_token` to retrieve the next page of
  // results. If this field is omitted, there are no more results.
  string next_page_token = 2;
}

// Request for CreateSubscription.
message CreateSubscriptionRequest {
  // Required. The parent location in which to create the subscription.
  // Structured like `projects/{project_number}/locations/{location}`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "locations.googleapis.com/Location"
    }
  ];

  // Required. Configuration of the subscription to create. Its `name` field is ignored.
  Subscription subscription = 2 [(google.api.field_behavior) = REQUIRED];

  // Required. The ID to use for the subscription, which will become the final component
  // of the subscription's name.
  //
  // This value is structured like: `my-sub-name`.
  string subscription_id = 3 [(google.api.field_behavior) = REQUIRED];
}

// Request for GetSubscription.
message GetSubscriptionRequest {
  // Required. The name of the subscription whose configuration to return.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "pubsublite.googleapis.com/Subscription"
    }
  ];
}

// Request for ListSubscriptions.
message ListSubscriptionsRequest {
  // Required. The parent whose subscriptions are to be listed.
  // Structured like `projects/{project_number}/locations/{location}`.
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "locations.googleapis.com/Location"
    }
  ];

  // The maximum number of subscriptions to return. The service may return fewer
  // than this value.
  // If unset or zero, all subscriptions for the parent will be returned.
  int32 page_size = 2;

  // A page token, received from a previous `ListSubscriptions` call.
  // Provide this to retrieve the subsequent page.
  //
  // When paginating, all other parameters provided to `ListSubscriptions` must
  // match the call that provided the page token.
  string page_token = 3;
}

// Response for ListSubscriptions.
message ListSubscriptionsResponse {
  // The list of subscriptions in the requested parent. The order of the
  // subscriptions is unspecified.
  repeated Subscription subscriptions = 1;

  // A token that can be sent as `page_token` to retrieve the next page of
  // results. If this field is omitted, there are no more results.
  string next_page_token = 2;
}

// Request for UpdateSubscription.
message UpdateSubscriptionRequest {
  // Required. The subscription to update. Its `name` field must be populated.
  // Topic field must not be populated.
  Subscription subscription = 1 [(google.api.field_behavior) = REQUIRED];

  // Required. A mask specifying the subscription fields to change.
  google.protobuf.FieldMask update_mask = 2 [(google.api.field_behavior) = REQUIRED];
}

// Request for DeleteSubscription.
message DeleteSubscriptionRequest {
  // Required. The name of the subscription to delete.
  string name = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference) = {
      type: "pubsublite.googleapis.com/Subscription"
    }
  ];
}