public async Task ExistsAsync()

in wwauth/Google.Solutions.WWAuth/Adapters/ServiceAccountAdapter.cs [102:147]
30 lines of code
2 McCabe index (conditional complexity)

        public async Task<bool> ExistsAsync(
            CancellationToken cancellationToken)
        {
            //
            // If the service account email address is valid, then
            // there must be a public JWKS.
            //
            // N.B. We don't have any Google credentials, so using
            // the IAM API isn't an option.
            //

            try
            {
                this.logger.Info(
                    "Fetching JWKS for service account '{0}'",
                    this.ServiceAccountEmail);

                using (var client = CreateHttpClient())
                using (var response = await client.GetAsync(
                        new Uri("https://www.googleapis.com/service_accounts/v1/" +
                            $"metadata/jwk/{this.ServiceAccountEmail}"),
                        cancellationToken)
                    .ConfigureAwait(false))
                {
                    response.EnsureSuccessStatusCode();

                    this.logger.Info(
                        "JWKS for service account '{0}' found",
                        this.ServiceAccountEmail);

                    //
                    // JWKS found, service account must exist.
                    //

                    return true;
                }
            }
            catch (HttpRequestException e)
            {
                this.logger.Error(e,
                    "Failed to fetch JWKS for service account '{0}'",
                    this.ServiceAccountEmail);

                return false;
            }
        }