AWSのDescribeAvailablePatchesを使ってみた

【執筆中】コードとかきれいにしてないけど現時点のメモ書きを載せておく
とりあえずセキュリティのパッチを取得してみる

        public static async Task<string> SayHelloAsync([ActivityTrigger] string name, ILogger log)
        {
            //log.LogInformation($"Saying hello to {name}.");
            var ssmClient = AwsSsmService.GetClient();


            // Windows Server 2019
            var request = new DescribeAvailablePatchesRequest();
            var productFilter = new PatchOrchestratorFilter();
            productFilter.Key = "PRODUCT";
            productFilter.Values.Add("WindowsServer2019");
            request.Filters.Add(productFilter);

            var classificationFilter = new PatchOrchestratorFilter();
            classificationFilter.Key = "CLASSIFICATION";
            classificationFilter.Values.Add("SecurityUpdates");

            request.Filters.Add(classificationFilter);

            try
            {
                var response = await ssmClient.DescribeAvailablePatchesAsync(request);
                string nextToken = null;
                var patches = new List<Patch>();
                int productCount = 0;
                int repositoryCount = 0;
                int savedProductCount = 0;
                int savedRepositoryCount = 0;

                if (response.HttpStatusCode == HttpStatusCode.OK)
                {
                    do
                    {
                        Thread.Sleep(500);

                        nextToken = response.NextToken;
                        patches.AddRange(response.Patches);

                        var platformList = patches.Select(r => r.Product).Distinct();
                        productCount = platformList.Count();

                        var repositoryList = patches.Select(r => r.Repository).Distinct();
                        repositoryCount = repositoryList.Count();

                    } while (nextToken != null);
                }
                else
                {
                    // Error
                    var code = response.HttpStatusCode;
                }

                // 2021/01のパッチだけ取得
                var date = new DateTime(2021, 1, 1, 0, 0, 0, 0);

                var currentPatches = patches.Where(r => r.ReleaseDate > date).ToList();

                var temp = string.Empty;

                return $"Hello {name}!";
            }
            catch (Exception ex)
            {   
                var message = ex.Message;
                throw;
            }

        }