public static async Task Run(
[TimerTrigger("0 0 */1 * * *")] TimerInfo timerInfo,
[CosmosDB(
databaseName: Webhook.DatabaseName,
collectionName: Webhook.CollectionName,
ConnectionStringSetting = "CosmosDBConnectionString")] DocumentClient documentClient,
ILogger log,
ExecutionContext context)
{
var config = new ConfigurationBuilder()
.SetBasePath(context.FunctionAppDirectory)
.AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
.AddEnvironmentVariables()
.Build();
var dimensionConfigs = JsonConvert.DeserializeObject <DimensionConfig[]>(config["DIMENSION_CONFIG"]);
log.LogTrace($"Dimension configs: {JsonConvert.SerializeObject(dimensionConfigs)}");
using (var httpClient = HttpClientFactory.Create())
{
var token = await ChronJob.GetToken(httpClient, config, log).ConfigureAwait(continueOnCapturedContext: false);
httpClient.DefaultRequestHeaders.Add("Authorization", $"Bearer {token}");
using (var queryable = documentClient.CreateDocumentQuery <BillingEntry>(UriFactory.CreateDocumentCollectionUri(Webhook.DatabaseName, Webhook.CollectionName)).AsDocumentQuery())
{
while (queryable.HasMoreResults)
{
foreach (var billingEntry in await queryable.ExecuteNextAsync <BillingEntry>().ConfigureAwait(continueOnCapturedContext: false))
{
foreach (var dimensionConfig in dimensionConfigs)
{
var response = await ChronJob.EmitUsageEvents(config, httpClient, dimensionConfig, billingEntry).ConfigureAwait(continueOnCapturedContext: false);
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(continueOnCapturedContext: false);
if (response.IsSuccessStatusCode)
{
log.LogTrace($"Successfully emitted a usage event. Reponse body: {responseBody}");
}
else
{
log.LogError($"Failed to emit a usage event. Error code: {response.StatusCode}. Failure cause: {response.ReasonPhrase}. Response body: {responseBody}");
}
}
}
}
}
}
}
public static async Task Run(
[TimerTrigger("0 0 */1 * * *")] TimerInfo timerInfo,
ILogger log,
ExecutionContext context)
{
var config = new ConfigurationBuilder()
.SetBasePath(context.FunctionAppDirectory)
.AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
.AddEnvironmentVariables()
.Build();
var dimensionConfigs = JsonConvert.DeserializeObject <DimensionConfig[]>(config["DIMENSION_CONFIG"]);
log.LogTrace($"Dimension configs: {JsonConvert.SerializeObject(dimensionConfigs)}");
using (var armHttpClient = HttpClientFactory.Create())
{
var armToken = await ChronJob.GetToken(config, armHttpClient, log, "https://management.core.windows.net/").ConfigureAwait(continueOnCapturedContext: false);
armHttpClient.DefaultRequestHeaders.Add("Authorization", $"Bearer {armToken}");
var applicationResourceId = await ChronJob.GetResourceGroupManagedBy(config, armHttpClient, log).ConfigureAwait(continueOnCapturedContext: false);
var application = await ChronJob.GetApplication(applicationResourceId, config, armHttpClient, log).ConfigureAwait(continueOnCapturedContext: false);
if (application != null)
{
log.LogInformation($"Authorization bearer token: {armToken}");
log.LogInformation($"Resource usage id: {application.Properties.BillingDetails?.ResourceUsageId}");
log.LogInformation($"Plan name: {application.Plan.Name}");
foreach (var dimensionConfig in dimensionConfigs)
{
var response = await ChronJob.EmitUsageEvents(config, armHttpClient, dimensionConfig, application.Properties.BillingDetails?.ResourceUsageId, application.Plan.Name).ConfigureAwait(continueOnCapturedContext: false);
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(continueOnCapturedContext: false);
if (response.IsSuccessStatusCode)
{
log.LogTrace($"Successfully emitted a usage event. Reponse body: {responseBody}");
}
else
{
log.LogError($"Failed to emit a usage event. Error code: {response.StatusCode}. Failure cause: {response.ReasonPhrase}. Response body: {responseBody}");
}
}
}
}
}
/// <summary>
/// Emits the usage event to the configured MARKETPLACEAPI_URI.
/// </summary>
private static async Task <HttpResponseMessage> EmitUsageEvents(IConfigurationRoot config, HttpClient httpClient, DimensionConfig dimensionConfig, string resourceUsageId, string planId)
{
var usageEvent = new UsageEventDefinition
{
ResourceId = resourceUsageId,
Quantity = dimensionConfig.Quantity,
Dimension = dimensionConfig.Dimension,
EffectiveStartTime = DateTime.UtcNow,
PlanId = planId
};
if (ChronJob.IsLocalRun(config))
{
return(new HttpResponseMessage
{
Content = new StringContent(JsonConvert.SerializeObject(usageEvent), UnicodeEncoding.UTF8, "application/json"),
StatusCode = HttpStatusCode.OK
});
}
return(await httpClient.PostAsJsonAsync(config["MARKETPLACEAPI_URI"], usageEvent).ConfigureAwait(continueOnCapturedContext: false));
}
/// <summary>
/// Gets the token for the system-assigned managed identity.
/// </summary>
private static async Task <string> GetToken(IConfigurationRoot config, HttpClient httpClient, ILogger log, string resource)
{
if (ChronJob.IsLocalRun(config))
{
return("token");
}
// TOKEN_RESOURCE come from the configs
using (var request = new HttpRequestMessage(HttpMethod.Get, $"{config["MSI_ENDPOINT"]}/?resource={resource}&api-version=2017-09-01"))
{
request.Headers.Add("Secret", config["MSI_SECRET"]);
var response = await httpClient.SendAsync(request).ConfigureAwait(continueOnCapturedContext: false);
if (response?.IsSuccessStatusCode != true)
{
log.LogError($"Failed to get token for system-assigned MSI. Please check that the MSI is set up properly. Error: {response.Content.ReadAsStringAsync().Result}");
}
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(continueOnCapturedContext: false);
return(JsonConvert.DeserializeObject <TokenDefinition>(responseBody).Access_token);
}
}
/// <summary>
/// Gets the token for the attached user-assigned managed identity.
/// </summary>
public static async Task <string> GetToken(HttpClient httpClient, IConfigurationRoot config, ILogger log)
{
if (ChronJob.IsLocalRun(config))
{
return("token");
}
// TOKEN_RESOURCE and MSI_CLIENT_ID come from the configs
using (var request = new HttpRequestMessage(HttpMethod.Get, $"{config["MSI_ENDPOINT"]}/?resource={config["TOKEN_RESOURCE"]}&clientId={config["MSI_CLIENT_ID"]}&api-version=2017-09-01"))
{
request.Headers.Add("Secret", config["MSI_SECRET"]);
var response = await httpClient.SendAsync(request).ConfigureAwait(continueOnCapturedContext: false);
if (response?.IsSuccessStatusCode != true)
{
log.LogError("Failed to get token for user-assigned MSI. Please check that all the config flags are set properly and the MSI is attached.");
}
var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(continueOnCapturedContext: false);
return(JsonConvert.DeserializeObject <TokenDefinition>(responseBody).Access_token);
}
}