// 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.cloud.redis.v1beta1;

import "google/api/annotations.proto";
import "google/api/resource.proto";
import "google/longrunning/operations.proto";
import "google/protobuf/field_mask.proto";
import "google/protobuf/timestamp.proto";

option go_package = "google.golang.org/genproto/googleapis/cloud/redis/v1beta1;redis";
option java_multiple_files = true;
option java_outer_classname = "CloudRedisServiceBetaProto";
option java_package = "com.google.cloud.redis.v1beta1";

// Configures and manages Cloud Memorystore for Redis instances
//
// Google Cloud Memorystore for Redis v1beta1
//
// The `redis.googleapis.com` service implements the Google Cloud Memorystore
// for Redis API and defines the following resource model for managing Redis
// instances:
// * The service works with a collection of cloud projects, named: `/projects/*`
// * Each project has a collection of available locations, named: `/locations/*`
// * Each location has a collection of Redis instances, named: `/instances/*`
// * As such, Redis instances are resources of the form:
//   `/projects/{project_id}/locations/{location_id}/instances/{instance_id}`
//
// Note that location_id must be refering to a GCP `region`; for example:
// * `projects/redpepper-1290/locations/us-central1/instances/my-redis`
service CloudRedis {
  // Lists all Redis instances owned by a project in either the specified
  // location (region) or all locations.
  //
  // The location should have the following format:
  // * `projects/{project_id}/locations/{location_id}`
  //
  // If `location_id` is specified as `-` (wildcard), then all regions
  // available to the project are queried, and the results are aggregated.
  rpc ListInstances(ListInstancesRequest) returns (ListInstancesResponse) {
    option (google.api.http) = {
      get: "/v1beta1/{parent=projects/*/locations/*}/instances"
    };
  }

  // Gets the details of a specific Redis instance.
  rpc GetInstance(GetInstanceRequest) returns (Instance) {
    option (google.api.http) = {
      get: "/v1beta1/{name=projects/*/locations/*/instances/*}"
    };
  }

  // Creates a Redis instance based on the specified tier and memory size.
  //
  // By default, the instance is accessible from the project's
  // [default network](/compute/docs/networks-and-firewalls#networks).
  //
  // The creation is executed asynchronously and callers may check the returned
  // operation to track its progress. Once the operation is completed the Redis
  // instance will be fully functional. Completed longrunning.Operation will
  // contain the new instance object in the response field.
  //
  // The returned operation is automatically deleted after a few hours, so there
  // is no need to call DeleteOperation.
  rpc CreateInstance(CreateInstanceRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{parent=projects/*/locations/*}/instances"
      body: "instance"
    };
  }

  // Updates the metadata and configuration of a specific Redis instance.
  //
  // Completed longrunning.Operation will contain the new instance object
  // in the response field. The returned operation is automatically deleted
  // after a few hours, so there is no need to call DeleteOperation.
  rpc UpdateInstance(UpdateInstanceRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      patch: "/v1beta1/{instance.name=projects/*/locations/*/instances/*}"
      body: "instance"
    };
  }

  // Failover the master role to current replica node against a specific
  // STANDARD tier redis instance.
  rpc FailoverInstance(FailoverInstanceRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      post: "/v1beta1/{name=projects/*/locations/*/instances/*}:failover"
      body: "*"
    };
  }

  // Deletes a specific Redis instance.  Instance stops serving and data is
  // deleted.
  rpc DeleteInstance(DeleteInstanceRequest)
      returns (google.longrunning.Operation) {
    option (google.api.http) = {
      delete: "/v1beta1/{name=projects/*/locations/*/instances/*}"
    };
  }
}

// A Google Cloud Redis instance.
message Instance {
  // Represents the different states of a Redis instance.
  enum State {
    // Not set.
    STATE_UNSPECIFIED = 0;

    // Redis instance is being created.
    CREATING = 1;

    // Redis instance has been created and is fully usable.
    READY = 2;

    // Redis instance configuration is being updated. Certain kinds of updates
    // may cause the instance to become unusable while the update is in
    // progress.
    UPDATING = 3;

    // Redis instance is being deleted.
    DELETING = 4;

    // Redis instance is being repaired and may be unusable.
    REPAIRING = 5;

    // Maintenance is being performed on this Redis instance.
    MAINTENANCE = 6;

    // Redis instance is importing data (availability may be affected).
    IMPORTING = 8;

    // Redis instance is failing over (availability may be affected).
    FAILING_OVER = 10;
  }

  // Available service tiers to choose from
  enum Tier {
    // Not set.
    TIER_UNSPECIFIED = 0;

    // BASIC tier: standalone instance
    BASIC = 1;

    // STANDARD_HA tier: highly available primary/replica instances
    STANDARD_HA = 3;
  }

  // Required. Unique name of the resource in this scope including project and
  // location using the form:
  //     `projects/{project_id}/locations/{location_id}/instances/{instance_id}`
  //
  // Note: Redis instances are managed and addressed at regional level so
  // location_id here refers to a GCP region; however, users may choose which
  // specific zone (or collection of zones for cross-zone instances) an instance
  // should be provisioned in. Refer to [location_id] and
  // [alternative_location_id] fields for more details.
  string name = 1;

  // An arbitrary and optional user-provided name for the instance.
  string display_name = 2;

  // Resource labels to represent user provided metadata
  map<string, string> labels = 3;

  // Optional. The zone where the instance will be provisioned. If not provided,
  // the service will choose a zone for the instance. For STANDARD_HA tier,
  // instances will be created across two zones for protection against zonal
  // failures. If [alternative_location_id] is also provided, it must be
  // different from [location_id].
  string location_id = 4;

  // Optional. Only applicable to STANDARD_HA tier which protects the instance
  // against zonal failures by provisioning it across two zones. If provided, it
  // must be a different zone from the one provided in [location_id].
  string alternative_location_id = 5;

  // Optional. The version of Redis software.
  // If not provided, latest supported version will be used. Updating the
  // version will perform an upgrade/downgrade to the new version. Currently,
  // the supported values are:
  //
  //  *   `REDIS_4_0` for Redis 4.0 compatibility
  //  *   `REDIS_3_2` for Redis 3.2 compatibility (default)
  string redis_version = 7;

  // Optional. The CIDR range of internal addresses that are reserved for this
  // instance. If not provided, the service will choose an unused /29 block,
  // for example, 10.0.0.0/29 or 192.168.0.0/29. Ranges must be unique
  // and non-overlapping with existing subnets in an authorized network.
  string reserved_ip_range = 9;

  // Output only. Hostname or IP address of the exposed Redis endpoint used by
  // clients to connect to the service.
  string host = 10;

  // Output only. The port number of the exposed Redis endpoint.
  int32 port = 11;

  // Output only. The current zone where the Redis endpoint is placed. For Basic
  // Tier instances, this will always be the same as the [location_id]
  // provided by the user at creation time. For Standard Tier instances,
  // this can be either [location_id] or [alternative_location_id] and can
  // change after a failover event.
  string current_location_id = 12;

  // Output only. The time the instance was created.
  google.protobuf.Timestamp create_time = 13;

  // Output only. The current state of this instance.
  State state = 14;

  // Output only. Additional information about the current status of this
  // instance, if available.
  string status_message = 15;

  // Optional. Redis configuration parameters, according to
  // http://redis.io/topics/config. Currently, the only supported parameters
  // are:
  //
  //  Redis 3.2 and above:
  //
  //  *   maxmemory-policy
  //  *   notify-keyspace-events
  //
  //  Redis 4.0 and above:
  //
  //  *   activedefrag
  //  *   lfu-log-factor
  //  *   lfu-decay-time
  map<string, string> redis_configs = 16;

  // Required. The service tier of the instance.
  Tier tier = 17;

  // Required. Redis memory size in GiB.
  int32 memory_size_gb = 18;

  // Optional. The full name of the Google Compute Engine
  // [network](/compute/docs/networks-and-firewalls#networks) to which the
  // instance is connected. If left unspecified, the `default` network
  // will be used.
  string authorized_network = 20;
}

// Request for
// [ListInstances][google.cloud.redis.v1beta1.CloudRedis.ListInstances].
message ListInstancesRequest {
  // Required. The resource name of the instance location using the form:
  //     `projects/{project_id}/locations/{location_id}`
  // where `location_id` refers to a GCP region
  string parent = 1;

  // The maximum number of items to return.
  //
  // If not specified, a default value of 1000 will be used by the service.
  // Regardless of the page_size value, the response may include a partial list
  // and a caller should only rely on response's
  // [next_page_token][CloudRedis.ListInstancesResponse.next_page_token]
  // to determine if there are more instances left to be queried.
  int32 page_size = 2;

  // The next_page_token value returned from a previous List request,
  // if any.
  string page_token = 3;
}

// Response for
// [ListInstances][google.cloud.redis.v1beta1.CloudRedis.ListInstances].
message ListInstancesResponse {
  // A list of Redis instances in the project in the specified location,
  // or across all locations.
  //
  // If the `location_id` in the parent field of the request is "-", all regions
  // available to the project are queried, and the results aggregated.
  // If in such an aggregated query a location is unavailable, a dummy Redis
  // entry is included in the response with the "name" field set to a value of
  // the form projects/{project_id}/locations/{location_id}/instances/- and the
  // "status" field set to ERROR and "status_message" field set to "location not
  // available for ListInstances".
  repeated Instance instances = 1;

  // Token to retrieve the next page of results, or empty if there are no more
  // results in the list.
  string next_page_token = 2;

  // Locations that could not be reached.
  repeated string unreachable = 3;
}

// Request for [GetInstance][google.cloud.redis.v1beta1.CloudRedis.GetInstance].
message GetInstanceRequest {
  // Required. Redis instance resource name using the form:
  //     `projects/{project_id}/locations/{location_id}/instances/{instance_id}`
  // where `location_id` refers to a GCP region
  string name = 1;
}

// Request for
// [CreateInstance][google.cloud.redis.v1beta1.CloudRedis.CreateInstance].
message CreateInstanceRequest {
  // Required. The resource name of the instance location using the form:
  //     `projects/{project_id}/locations/{location_id}`
  // where `location_id` refers to a GCP region
  string parent = 1;

  // Required. The logical name of the Redis instance in the customer project
  // with the following restrictions:
  //
  // * Must contain only lowercase letters, numbers, and hyphens.
  // * Must start with a letter.
  // * Must be between 1-40 characters.
  // * Must end with a number or a letter.
  // * Must be unique within the customer project / location
  string instance_id = 2;

  // Required. A Redis [Instance] resource
  Instance instance = 3;
}

// Request for
// [UpdateInstance][google.cloud.redis.v1beta1.CloudRedis.UpdateInstance].
message UpdateInstanceRequest {
  // Required. Mask of fields to update. At least one path must be supplied in
  // this field. The elements of the repeated paths field may only include these
  // fields from [Instance][google.cloud.redis.v1beta1.Instance]:
  //
  //  *   `displayName`
  //  *   `labels`
  //  *   `memorySizeGb`
  //  *   `redisConfig`
  google.protobuf.FieldMask update_mask = 1;

  // Required. Update description.
  // Only fields specified in update_mask are updated.
  Instance instance = 2;
}

// Request for
// [DeleteInstance][google.cloud.redis.v1beta1.CloudRedis.DeleteInstance].
message DeleteInstanceRequest {
  // Required. Redis instance resource name using the form:
  //     `projects/{project_id}/locations/{location_id}/instances/{instance_id}`
  // where `location_id` refers to a GCP region
  string name = 1;
}

// Request for
// [Failover][google.cloud.redis.v1beta1.CloudRedis.FailoverInstance].
message FailoverInstanceRequest {
  enum DataProtectionMode {
    DATA_PROTECTION_MODE_UNSPECIFIED = 0;

    // Instance failover will be protected with data loss control. More
    // specifically, the failover will only be performed if the current
    // replication offset diff between master and replica is under a certain
    // threshold.
    LIMITED_DATA_LOSS = 1;

    // Instance failover will be performed without data loss control.
    FORCE_DATA_LOSS = 2;
  }

  // Required. Redis instance resource name using the form:
  //     `projects/{project_id}/locations/{location_id}/instances/{instance_id}`
  // where `location_id` refers to a GCP region
  string name = 1;

  // Optional. Available data protection modes that the user can choose. If it's
  // unspecified, data protection mode will be LIMITED_DATA_LOSS by default.
  DataProtectionMode data_protection_mode = 2;
}

// This location metadata represents additional configuration options for a
// given location where a Redis instance may be created. All fields are output
// only. It is returned as content of the
// `google.cloud.location.Location.metadata` field.
message LocationMetadata {
  // Output only. The set of available zones in the location. The map is keyed
  // by the lowercase ID of each zone, as defined by GCE. These keys can be
  // specified in `location_id` or `alternative_location_id` fields when
  // creating a Redis instance.
  map<string, ZoneMetadata> available_zones = 1;
}

// Defines specific information for a particular zone. Currently empty and
// reserved for future use only.
message ZoneMetadata {}