// 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.logging.v2;

import "google/api/annotations.proto";
import "google/protobuf/empty.proto";

option java_multiple_files = true;
option java_package = "com.google.logging.v2";


// Service for configuring logs-based metrics.
service MetricsServiceV2 {
  // Lists logs-based metrics.
  rpc ListLogMetrics(ListLogMetricsRequest) returns (ListLogMetricsResponse) {
    option (google.api.http) = { get: "/v2beta1/{parent=projects/*}/metrics" };
  }

  // Gets a logs-based metric.
  rpc GetLogMetric(GetLogMetricRequest) returns (LogMetric) {
    option (google.api.http) = { get: "/v2beta1/{metric_name=projects/*/metrics/*}" };
  }

  // Creates a logs-based metric.
  rpc CreateLogMetric(CreateLogMetricRequest) returns (LogMetric) {
    option (google.api.http) = { post: "/v2beta1/{parent=projects/*}/metrics" body: "metric" };
  }

  // Creates or updates a logs-based metric.
  rpc UpdateLogMetric(UpdateLogMetricRequest) returns (LogMetric) {
    option (google.api.http) = { put: "/v2beta1/{metric_name=projects/*/metrics/*}" body: "metric" };
  }

  // Deletes a logs-based metric.
  rpc DeleteLogMetric(DeleteLogMetricRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = { delete: "/v2beta1/{metric_name=projects/*/metrics/*}" };
  }
}

// Describes a logs-based metric.  The value of the metric is the
// number of log entries that match a logs filter.
message LogMetric {
  // Required. The client-assigned metric identifier. Example:
  // `"severe_errors"`.  Metric identifiers are limited to 1000
  // characters and can include only the following characters: `A-Z`,
  // `a-z`, `0-9`, and the special characters `_-.,+!*',()%/\`.  The
  // forward-slash character (`/`) denotes a hierarchy of name pieces,
  // and it cannot be the first character of the name.
  string name = 1;

  // A description of this metric, which is used in documentation.
  string description = 2;

  // An [advanced logs filter](/logging/docs/view/advanced_filters).
  // Example: `"logName:syslog AND severity>=ERROR"`.
  string filter = 3;
}

// The parameters to ListLogMetrics.
message ListLogMetricsRequest {
  // Required. The resource name containing the metrics.
  // Example: `"projects/my-project-id"`.
  string parent = 1;

  // Optional. If the `pageToken` parameter is supplied, then the next page of
  // results is retrieved.  The `pageToken` parameter must be set to the value
  // of the `nextPageToken` from the previous response.
  // The value of `parent` must be the same as in the previous request.
  string page_token = 2;

  // Optional. The maximum number of results to return from this request.
  // You must check for presence of `nextPageToken` to determine if additional
  // results are available, which you can retrieve by passing the
  // `nextPageToken` value as the `pageToken` parameter in the next request.
  int32 page_size = 3;
}

// Result returned from ListLogMetrics.
message ListLogMetricsResponse {
  // A list of logs-based metrics.
  repeated LogMetric metrics = 1;

  // If there are more results than were returned, then `nextPageToken` is
  // included in the response.  To get the next set of results, call this
  // method again using the value of `nextPageToken` as `pageToken`.
  string next_page_token = 2;
}

// The parameters to GetLogMetric.
message GetLogMetricRequest {
  // The resource name of the desired metric.
  // Example: `"projects/my-project-id/metrics/my-metric-id"`.
  string metric_name = 1;
}

// The parameters to CreateLogMetric.
message CreateLogMetricRequest {
  // The resource name of the project in which to create the metric.
  // Example: `"projects/my-project-id"`.
  //
  // The new metric must be provided in the request.
  string parent = 1;

  // The new logs-based metric, which must not have an identifier that
  // already exists.
  LogMetric metric = 2;
}

// The parameters to UpdateLogMetric.
//
message UpdateLogMetricRequest {
  // The resource name of the metric to update.
  // Example: `"projects/my-project-id/metrics/my-metric-id"`.
  //
  // The updated metric must be provided in the request and have the
  // same identifier that is specified in `metricName`.
  // If the metric does not exist, it is created.
  string metric_name = 1;

  // The updated metric, whose name must be the same as the
  // metric identifier in `metricName`. If `metricName` does not
  // exist, then a new metric is created.
  LogMetric metric = 2;
}

// The parameters to DeleteLogMetric.
message DeleteLogMetricRequest {
  // The resource name of the metric to delete.
  // Example: `"projects/my-project-id/metrics/my-metric-id"`.
  string metric_name = 1;
}