public static async Task SaveClaimToDb(
[ActivityTrigger] WhatIfDemoDbDataContext.Claim claim,
ILogger log)
{
var ctx = await WhatIfDemoDbDataContext.CreateAsync();
ctx.Claims.Add(claim);
await ctx.SaveChangesIdempotentlyAsync(ex => {
// Explicitly handling the case of duplicated execution.
// Which might happen, if the process crashes or restarts.
log.LogError($"Failed to add policy {claim.id} from userId {claim.userId}: {ex.Message}");
});
log.LogWarning($"Saved claim {claim.id} from userId {claim.userId}");
}
public static async Task SendMobileNotification(
[ActivityTrigger] WhatIfDemoDbDataContext.Claim claim,
ILogger log)
{
// Notifications binding is not yet available for Functions 2.0, unfortunately.
// So just using NotificationHubClient manually.
var hub = NotificationHubClient.CreateClientFromConnectionString(Environment.GetEnvironmentVariable(NotificationHubConnectionVariableName), Environment.GetEnvironmentVariable(NotificationHubPathVariableName));
var payload = new
{
message = $"Click to approve claim {claim.id} from user {claim.userId} with license {claim.licenseId}",
uri = $"{Helpers.GetHostName()}/api/{nameof(ApproveClaim)}?claimId={claim.id}"
};
await hub.SendNotificationAsync(new FcmNotification($"{{\"data\":{payload.ToJson()}}}"));
log.LogWarning($"Notification about claim {claim.id} from user {claim.userId} with license {claim.licenseId} sent!");
}
public static async Task ProcessClaim(
[OrchestrationClient] DurableOrchestrationClient orchestrationClient,
[BlobTrigger("claims/{fileFullName}", Connection = "AzureWebJobsStorage")] Stream fileStream,
string fileFullName,
ILogger log)
{
// Expecting the file name be in form '<userId>/<fileName>'
var fileNameParts = fileFullName.Split('/');
if (fileNameParts.Length != 2)
{
return;
}
string userId = fileNameParts[0];
string fileName = fileNameParts[1];
if (fileName != DriversLicenseFileName)
{
return;
}
// Analyzing fileStream before starting a Saga, since fileStream isn't serializable
// and since there's a built-in retry logic for BlobTriggers anyway.
string licenseId = await ExtractLicenseId(fileStream);
log.LogWarning($"Extracted driving license id {licenseId}, starting claim processing for user {userId}");
var claim = new WhatIfDemoDbDataContext.Claim
{
id = Guid.NewGuid(),
userId = userId,
licenseId = licenseId,
dateCreated = DateTime.UtcNow,
amount = new Random().Next(1, 1000)
};
// Starting the claim processing Saga
await orchestrationClient.StartNewAsync(nameof(ProcessClaimOrchestrator), claim.id.ToString(), claim);
}
