public static async Task GetKeyValueChange()

in src/Microsoft.Extensions.Configuration.AzureAppConfiguration/Extensions/ConfigurationClientExtensions.cs [17:65]

46 lines of code
7 McCabe index (conditional complexity)


        public static async Task<KeyValueChange> GetKeyValueChange(this ConfigurationClient client, ConfigurationSetting setting, CancellationToken cancellationToken)
        {
            if (setting == null)
            {
                throw new ArgumentNullException(nameof(setting));
            }

            if (string.IsNullOrEmpty(setting.Key))
            {
                throw new ArgumentNullException($"{nameof(setting)}.{nameof(setting.Key)}");
            }

            try
            {
                Response<ConfigurationSetting> response = await client.GetConfigurationSettingAsync(setting, onlyIfChanged: true, cancellationToken).ConfigureAwait(false);
                if (response.GetRawResponse().Status == (int)HttpStatusCode.OK &&
                    !response.Value.ETag.Equals(setting.ETag))
                {
                    return new KeyValueChange
                    {
                        ChangeType = KeyValueChangeType.Modified,
                        Previous = setting,
                        Current = response.Value,
                        Key = setting.Key,
                        Label = setting.Label
                    };
                }
            }
            catch (RequestFailedException e) when (e.Status == (int)HttpStatusCode.NotFound && setting.ETag != default)
            {
                return new KeyValueChange
                {
                    ChangeType = KeyValueChangeType.Deleted,
                    Previous = setting,
                    Current = null,
                    Key = setting.Key,
                    Label = setting.Label
                };
            }

            return new KeyValueChange
            {
                ChangeType = KeyValueChangeType.None,
                Previous = setting,
                Current = setting,
                Key = setting.Key,
                Label = setting.Label
            };
        }