public static async Task <AdTokenResponse> GetToken(Dictionary <string, string> envVars)
{
string adTokenEpUri =
envVars[AzureAdEnvConstants.AZURE_AD_TOKEN_EP] + "/" +
envVars[AzureAdEnvConstants.AZURE_AD_TENANT_ID] + "/oauth2/token";
Dictionary <string, string> cred = new Dictionary <string, string>();
cred.Add("grant_type", envVars[AzureAdEnvConstants.OAUTH_GRANT_TYPE]);
cred.Add("client_id", envVars[AzureAdEnvConstants.AZURE_SP_CLIENT_ID]);
cred.Add("client_secret", envVars[AzureAdEnvConstants.AZURE_SP_CLIENT_SECRET]);
cred.Add("resource", envVars[AzureAdEnvConstants.AZURE_SP_APP_ID_URI]);
HttpResponseMessage response =
await client.PostAsync(new Uri(adTokenEpUri), new FormUrlEncodedContent(cred));
HttpStatusCode respCode = response.StatusCode;
if (respCode != HttpStatusCode.OK)
{
throw new HttpRequestException(string.Format("AD Token request failed. Received HTTP status code: {0} ({1})", (int)respCode, respCode));
}
AdTokenResponse token =
await JsonSerializer.DeserializeAsync <AdTokenResponse>(await response.Content.ReadAsStreamAsync());
return(token);
}
// public static async Task Run([TimerTrigger("0 */1 * * * *")]TimerInfo myTimer, ILogger log)
public static async Task Run([TimerTrigger("%VmssTriggerSchedule%")] TimerInfo myTimer, ILogger log)
{
log.LogInformation($"***** AksVmssScaleTrigger - Start Time: {DateTime.Now}");
Dictionary <string, string> envVars = new Dictionary <string, string>();
new ParseAzureADInputs().GetEnvVars(ref envVars);
envVars.Add(AzureAdEnvConstants.OAUTH_GRANT_TYPE, "client_credentials");
string adTokenEpUri =
envVars[AzureAdEnvConstants.AZURE_AD_TOKEN_EP] + "/" +
envVars[AzureAdEnvConstants.AZURE_AD_TENANT_ID] + "/oauth2/token";
log.LogInformation($"***** AksVmssScaleTrigger - AD Endpoint URI: {adTokenEpUri}");
AdTokenResponse token = await AdTokenFactory.GetToken(envVars);
log.LogInformation($"***** AksVmssScaleTrigger - Access Token: {token.AccessToken}");
new ParseAzureInputs().GetEnvVars(ref envVars);
new ParseAzureVMssInputs().GetEnvVars(ref envVars);
RestApiRequest request = new RestApiRequest();
try {
/* request.AzureEndPoint =
* string.Format(AzureEnvConstants.AZURE_MGMT_API_EP,subId,rgName) +
* "Microsoft.Compute/virtualMachineScaleSets?api-version=" + vmssVersion; */
request.AzureEndPoint =
string.Format(
AzureEnvConstants.AZURE_MGMT_API_EP,
envVars[AzureEnvConstants.AZURE_SUBSCRIPTION_ID],
envVars[AzureEnvConstants.AZURE_RES_GROUP_NAME]) +
"Microsoft.Compute/virtualMachineScaleSets/" +
envVars[AzureVMssConstants.AZURE_VMSS_NAME] +
string.Format(
"/{0}?api-version={1}",
envVars[AzureVMssConstants.AZURE_VMSS_ACTION],
envVars[AzureVMssConstants.AZURE_VMSS_API_VER]);
log.LogInformation($"***** AksVmssScaleTrigger - Azure API URI: {request.AzureEndPoint}");
request.ReqHeaders.Add("Authorization", string.Format("Bearer {0}", token.AccessToken));
IRestApiOperations vmssApi = new AzVmssApiOperations();
// RestApiResponse response = await vmssApi.ExecuteGet(request);
RestApiResponse response = await vmssApi.ExecutePost(request);
if (!string.IsNullOrEmpty(response.ReasonPhrase))
{
throw new ApiOperationException(string.Format("Azure REST API call failed. Received HTTP status code: {0} ({1}), Response: {2}", (int)response.StatusCode, response.ReasonPhrase, response.Response));
}
log.LogInformation($"***** AksVmssScaleTrigger - API Response status: {response.StatusCode}, Response: {response.Response}");
}
catch (Exception exp) // Catch HTTP Exceptions - Server down, connection refused ...
{
log.LogError($"***** AksVmssScaleTrigger - Encountered exception: {exp}");
};
log.LogInformation($"***** AksVmssScaleTrigger - End Time: {DateTime.Now}");
}
