# Copyright 2016 Google Inc. All rights reserved.
#
# 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.
#
# EDITING INSTRUCTIONS
# This file was generated from the file
# https://github.com/googleapis/googleapis/blob/master/google/logging/v2/logging_metrics.proto,
# and updates to that file get reflected here through a refresh process.
# For the short term, the refresh process will only be runnable by Google
# engineers.
#
# The only allowed edits are to method and file documentation. A 3-way
# merge preserves those additions if the generated source changes.

require "json"
require "pathname"

require "google/gax"
require "google/logging/v2/logging_metrics_services_pb"

module Google
  module Cloud
    module Logging
      module V2
        # Service for configuring logs-based metrics.
        #
        # @!attribute [r] stub
        #   @return [Google::Logging::V2::MetricsServiceV2::Stub]
        class MetricsServiceV2Api
          attr_reader :stub

          # The default address of the service.
          SERVICE_ADDRESS = "logging.googleapis.com".freeze

          # The default port of the service.
          DEFAULT_SERVICE_PORT = 443

          CODE_GEN_NAME_VERSION = "gapic/0.1.0".freeze

          DEFAULT_TIMEOUT = 30

          PAGE_DESCRIPTORS = {
            "list_log_metrics" => Google::Gax::PageDescriptor.new(
              "page_token",
              "next_page_token",
              "metrics")
          }.freeze

          private_constant :PAGE_DESCRIPTORS

          # The scopes needed to make gRPC calls to all of the methods defined in
          # this service.
          ALL_SCOPES = [
            "https://www.googleapis.com/auth/cloud-platform",
            "https://www.googleapis.com/auth/cloud-platform.read-only",
            "https://www.googleapis.com/auth/logging.admin",
            "https://www.googleapis.com/auth/logging.read",
            "https://www.googleapis.com/auth/logging.write"
          ].freeze

          PARENT_PATH_TEMPLATE = Google::Gax::PathTemplate.new(
            "projects/{project}"
          )

          private_constant :PARENT_PATH_TEMPLATE

          METRIC_PATH_TEMPLATE = Google::Gax::PathTemplate.new(
            "projects/{project}/metrics/{metric}"
          )

          private_constant :METRIC_PATH_TEMPLATE

          # Returns a fully-qualified parent resource name string.
          # @param project [String]
          # @return [String]
          def self.parent_path project
            PARENT_PATH_TEMPLATE.render(
              :"project" => project
            )
          end

          # Returns a fully-qualified metric resource name string.
          # @param project [String]
          # @param metric [String]
          # @return [String]
          def self.metric_path project, metric
            METRIC_PATH_TEMPLATE.render(
              :"project" => project,
              :"metric" => metric
            )
          end

          # Parses the project from a parent resource.
          # @param parent_name [String]
          # @return [String]
          def self.match_project_from_parent_name parent_name
            PARENT_PATH_TEMPLATE.match(parent_name)["project"]
          end

          # Parses the project from a metric resource.
          # @param metric_name [String]
          # @return [String]
          def self.match_project_from_metric_name metric_name
            METRIC_PATH_TEMPLATE.match(metric_name)["project"]
          end

          # Parses the metric from a metric resource.
          # @param metric_name [String]
          # @return [String]
          def self.match_metric_from_metric_name metric_name
            METRIC_PATH_TEMPLATE.match(metric_name)["metric"]
          end

          # @param service_path [String]
          #   The domain name of the API remote host.
          # @param port [Integer]
          #   The port on which to connect to the remote host.
          # @param channel [Channel]
          #   A Channel object through which to make calls.
          # @param chan_creds [Grpc::ChannelCredentials]
          #   A ChannelCredentials for the setting up the RPC client.
          # @param client_config[Hash]
          #   A Hash for call options for each method. See
          #   Google::Gax#construct_settings for the structure of
          #   this data. Falls back to the default config if not specified
          #   or the specified config is missing data points.
          # @param timeout [Numeric]
          #   The default timeout, in seconds, for calls made through this client.
          # @param app_name [String]
          #   The codename of the calling service.
          # @param app_version [String]
          #   The version of the calling service.
          def initialize \
              service_path: SERVICE_ADDRESS,
              port: DEFAULT_SERVICE_PORT,
              channel: nil,
              chan_creds: nil,
              scopes: ALL_SCOPES,
              client_config: {},
              timeout: DEFAULT_TIMEOUT,
              app_name: "gax",
              app_version: Google::Gax::VERSION
            google_api_client = "#{app_name}/#{app_version} " \
              "#{CODE_GEN_NAME_VERSION} ruby/#{RUBY_VERSION}".freeze
            headers = { :"x-goog-api-client" => google_api_client }
            client_config_file = Pathname.new(__dir__).join(
              "metrics_service_v2_client_config.json"
            )
            defaults = client_config_file.open do |f|
              Google::Gax.construct_settings(
                "google.logging.v2.MetricsServiceV2",
                JSON.parse(f.read),
                client_config,
                Google::Gax::Grpc::STATUS_CODE_NAMES,
                timeout,
                page_descriptors: PAGE_DESCRIPTORS,
                errors: Google::Gax::Grpc::API_ERRORS,
                kwargs: headers
              )
            end
            @stub = Google::Gax::Grpc.create_stub(
              service_path,
              port,
              chan_creds: chan_creds,
              channel: channel,
              scopes: scopes,
              &Google::Logging::V2::MetricsServiceV2::Stub.method(:new)
            )

            @list_log_metrics = Google::Gax.create_api_call(
              @stub.method(:list_log_metrics),
              defaults["list_log_metrics"]
            )
            @get_log_metric = Google::Gax.create_api_call(
              @stub.method(:get_log_metric),
              defaults["get_log_metric"]
            )
            @create_log_metric = Google::Gax.create_api_call(
              @stub.method(:create_log_metric),
              defaults["create_log_metric"]
            )
            @update_log_metric = Google::Gax.create_api_call(
              @stub.method(:update_log_metric),
              defaults["update_log_metric"]
            )
            @delete_log_metric = Google::Gax.create_api_call(
              @stub.method(:delete_log_metric),
              defaults["delete_log_metric"]
            )
          end

          # Service calls

          # Lists logs-based metrics.
          #
          # @param parent [String]
          #   Required. The resource name containing the metrics.
          #   Example: +"projects/my-project-id"+.
          # @param page_size [Integer]
          #   The maximum number of resources contained in the underlying API
          #   response. If page streaming is performed per-resource, this
          #   parameter does not affect the return value. If page streaming is
          #   performed per-page, this determines the maximum number of
          #   resources in a page.
          # @param options [Google::Gax::CallOptions]
          #   Overrides the default settings for this call, e.g, timeout,
          #   retries, etc.
          # @return [Google::Gax::PagedEnumerable<Google::Logging::V2::LogMetric>]
          #   An enumerable of Google::Logging::V2::LogMetric instances.
          #   See Google::Gax::PagedEnumerable documentation for other
          #   operations such as per-page iteration or access to the response
          #   object.
          # @raise [Google::Gax::GaxError] if the RPC is aborted.
          def list_log_metrics \
              parent,
              page_size: nil,
              options: nil
            req = Google::Logging::V2::ListLogMetricsRequest.new(
              parent: parent
            )
            req.page_size = page_size unless page_size.nil?
            @list_log_metrics.call(req, options)
          end

          # Gets a logs-based metric.
          #
          # @param metric_name [String]
          #   The resource name of the desired metric.
          #   Example: +"projects/my-project-id/metrics/my-metric-id"+.
          # @param options [Google::Gax::CallOptions]
          #   Overrides the default settings for this call, e.g, timeout,
          #   retries, etc.
          # @return [Google::Logging::V2::LogMetric]
          # @raise [Google::Gax::GaxError] if the RPC is aborted.
          def get_log_metric \
              metric_name,
              options: nil
            req = Google::Logging::V2::GetLogMetricRequest.new(
              metric_name: metric_name
            )
            @get_log_metric.call(req, options)
          end

          # Creates a logs-based metric.
          #
          # @param parent [String]
          #   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.
          # @param metric [Google::Logging::V2::LogMetric]
          #   The new logs-based metric, which must not have an identifier that
          #   already exists.
          # @param options [Google::Gax::CallOptions]
          #   Overrides the default settings for this call, e.g, timeout,
          #   retries, etc.
          # @return [Google::Logging::V2::LogMetric]
          # @raise [Google::Gax::GaxError] if the RPC is aborted.
          def create_log_metric \
              parent,
              metric,
              options: nil
            req = Google::Logging::V2::CreateLogMetricRequest.new(
              parent: parent,
              metric: metric
            )
            @create_log_metric.call(req, options)
          end

          # Creates or updates a logs-based metric.
          #
          # @param metric_name [String]
          #   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.
          # @param metric [Google::Logging::V2::LogMetric]
          #   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.
          # @param options [Google::Gax::CallOptions]
          #   Overrides the default settings for this call, e.g, timeout,
          #   retries, etc.
          # @return [Google::Logging::V2::LogMetric]
          # @raise [Google::Gax::GaxError] if the RPC is aborted.
          def update_log_metric \
              metric_name,
              metric,
              options: nil
            req = Google::Logging::V2::UpdateLogMetricRequest.new(
              metric_name: metric_name,
              metric: metric
            )
            @update_log_metric.call(req, options)
          end

          # Deletes a logs-based metric.
          #
          # @param metric_name [String]
          #   The resource name of the metric to delete.
          #   Example: +"projects/my-project-id/metrics/my-metric-id"+.
          # @param options [Google::Gax::CallOptions]
          #   Overrides the default settings for this call, e.g, timeout,
          #   retries, etc.
          # @raise [Google::Gax::GaxError] if the RPC is aborted.
          def delete_log_metric \
              metric_name,
              options: nil
            req = Google::Logging::V2::DeleteLogMetricRequest.new(
              metric_name: metric_name
            )
            @delete_log_metric.call(req, options)
          end
        end
      end
    end
  end
end