/// <summary>
/// Query Azure Management API for the IotHub metrics.
/// More details in following docs:
/// https://docs.microsoft.com/en-us/azure/monitoring-and-diagnostics/monitoring-rest-api-walkthrough
/// https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-metrics
/// https://docs.microsoft.com/en-us/rest/api/monitor/metrics/list
/// </summary>
/// <param name="requestList"></param>
public async Task <MetricsResponseListModel> PostAsync(MetricsRequestListModel requestList)
{
if (this.AccessTokenIsNullOrEmpty())
{
await this.GetAadTokenAsync();
}
// Renew access token 10 minutes before it's expire time
if (this.AccessTokenExpireSoon())
{
this.GetAadTokenAsync();
}
if (requestList == null)
{
requestList = this.GetDefaultMetricsRequests();
}
var accessToken = $"Bearer {this.ReadSecureString(this.secureAccessToken)}";
var request = this.PrepareRequest($"batch?api-version={this.config.AzureManagementAdapterApiVersion}", accessToken, requestList);
this.log.Debug("Azure Management request content", () => new { request.Content });
var response = await this.httpClient.PostAsync(request);
this.log.Debug("Azure Management response", () => new { response });
this.ThrowIfError(response);
return(JsonConvert.DeserializeObject <MetricsResponseListModel>(response.Content));
}
/// <summary>
/// Query Azure Management API for the IotHub metrics.
/// More details in following docs:
/// https://docs.microsoft.com/en-us/azure/monitoring-and-diagnostics/monitoring-rest-api-walkthrough
/// https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-metrics
/// https://docs.microsoft.com/en-us/rest/api/monitor/metrics/list
/// </summary>
/// <param name="requestList"></param>
public async Task <MetricsResponseListModel> PostAsync(MetricsRequestListModel requestList)
{
await this.CreateOrUpdateAccessTokenAsync();
if (requestList == null)
{
requestList = this.GetDefaultMetricsRequests();
}
var accessToken = $"Bearer {this.ReadSecureString(this.secureAccessToken)}";
var request = this.PrepareRequest($"batch?api-version={this.config.AzureManagementAdapterApiVersion}", accessToken, requestList);
this.log.Debug("Azure Management request content", () => new { request.Content });
var response = await this.httpClient.PostAsync(request);
this.log.Debug("Azure Management response", () => new { response });
this.ThrowIfError(response);
var metricsResponseList = JsonConvert.DeserializeObject <MetricsResponseListModel>(response.Content);
foreach (var responseModel in metricsResponseList.Responses)
{
if (responseModel.Content.Error != null)
{
throw new ExternalDependencyException(responseModel.Content.Error.Message);
}
}
return(metricsResponseList);
}
private MetricsRequestListModel GetDefaultMetricsRequests()
{
var request = new MetricsRequestModel
{
HttpMethod = "GET",
RelativeUrl = this.GetDefaultIoTHubMetricsUrl()
};
var result = new MetricsRequestListModel();
result.Requests.Add(request);
return(result);
}
private HttpRequest PrepareRequest(string path, string token, MetricsRequestListModel content = null)
{
var request = new HttpRequest();
request.AddHeader(HttpRequestHeader.Accept.ToString(), "application/json");
request.AddHeader(HttpRequestHeader.CacheControl.ToString(), "no-cache");
request.AddHeader(HttpRequestHeader.Authorization.ToString(), token);
request.SetUriFromString($"{this.config.AzureManagementAdapterApiUrl}/{path}");
request.Options.EnsureSuccess = false;
request.Options.Timeout = this.config.AzureManagementAdapterApiTimeout;
if (content != null)
{
request.SetContent(content);
}
this.log.Debug("Azure Management request", () => new { request });
return(request);
}
private HttpRequest PrepareRequest(string path, string token, MetricsRequestListModel content = null)
{
var request = new HttpRequest();
request.AddHeader(HttpRequestHeader.Accept.ToString(), "application/json");
request.AddHeader(HttpRequestHeader.CacheControl.ToString(), "no-cache");
request.AddHeader(HttpRequestHeader.Authorization.ToString(), token);
request.SetUriFromString($"{this.config.AzureManagementAdapterApiUrl}/{path}");
request.Options.EnsureSuccess = false;
request.Options.Timeout = this.config.AzureManagementAdapterApiTimeout;
if (!this.config.AzureManagementAdapterApiUrl.ToLowerInvariant().StartsWith("https:"))
{
throw new InvalidConfigurationException("Azure Management API url must start with https");
}
if (content != null)
{
request.SetContent(content);
}
this.log.Debug("Azure Management request", () => new { request });
return(request);
}