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Add error handling to pending transaction processor #134

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Merged
StuartFerguson merged 1 commit into from
Feb 24, 2026
Merged

Add error handling to pending transaction processor #134

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84 changes: 45 additions & 39 deletions TestHosts/TestHosts/Startup.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -30,47 +30,53 @@ public PendingPrePaymentProcessor(IDbContextResolver<PataPawaContext> resolver){

protected override async Task ExecuteAsync(CancellationToken stoppingToken){
while (stoppingToken.IsCancellationRequested == false){
// TODO: may introduce a date filter
using ResolvedDbContext<PataPawaContext>? resolvedContext = this.Resolver.Resolve("PataPawaReadModel");

var pendingTransactions = await resolvedContext.Context.Transactions.Where(t => t.IsPending).OrderBy(t => t.Date).ToListAsync(stoppingToken);

if (pendingTransactions.Any()){
// Process the pending transactions
foreach (Transaction pendingTransaction in pendingTransactions){

PrePayMeter meter = await resolvedContext.Context.PrePayMeters.SingleAsync(m => m.MeterNumber == pendingTransaction.MeterNumber, stoppingToken);

pendingTransaction.Status = 0;
pendingTransaction.Messaage = "success";
pendingTransaction.Vendor = "support";
pendingTransaction.MeterNumber = meter.MeterNumber;
pendingTransaction.ResultCode = "elec000";
pendingTransaction.StandardTokenAmt = 64;
pendingTransaction.StandardTokenTax = 0;
pendingTransaction.Units = 6.1m;
pendingTransaction.Token = Guid.NewGuid().ToString("N");
pendingTransaction.StandardTokenRctNum = "Ce001OVS3709952";
pendingTransaction.Date = DateTime.Now;
pendingTransaction.TotalAmount = 400;
pendingTransaction.Charges = new List<TransactionCharge>{
new TransactionCharge{
ERCCharge = 3.19m,
ForexCharge = 0.47m,
FuelIndexCharge = 2.47m,
InflationAdjustment = 0,
MonthlyFC = 13.27m,
REPCharge = 1.39m,
TotalTax = 15.21m
}
};
pendingTransaction.CustomerName = meter.CustomerName;
pendingTransaction.Reference = DateTime.Now.ToString("yyyyMMddhhmmsssfff");
pendingTransaction.IsPending = false;

await resolvedContext.Context.SaveChangesAsync(stoppingToken);
try {
// TODO: may introduce a date filter
using ResolvedDbContext<PataPawaContext>? resolvedContext = this.Resolver.Resolve("PataPawaReadModel");

var pendingTransactions = await resolvedContext.Context.Transactions.Where(t => t.IsPending).OrderBy(t => t.Date).ToListAsync(stoppingToken);

if (pendingTransactions.Any()) {
// Process the pending transactions
foreach (Transaction pendingTransaction in pendingTransactions) {

PrePayMeter meter = await resolvedContext.Context.PrePayMeters.SingleAsync(m => m.MeterNumber == pendingTransaction.MeterNumber, stoppingToken);

pendingTransaction.Status = 0;
pendingTransaction.Messaage = "success";
pendingTransaction.Vendor = "support";
pendingTransaction.MeterNumber = meter.MeterNumber;
pendingTransaction.ResultCode = "elec000";
pendingTransaction.StandardTokenAmt = 64;
pendingTransaction.StandardTokenTax = 0;
pendingTransaction.Units = 6.1m;
pendingTransaction.Token = Guid.NewGuid().ToString("N");
pendingTransaction.StandardTokenRctNum = "Ce001OVS3709952";
pendingTransaction.Date = DateTime.Now;
pendingTransaction.TotalAmount = 400;
pendingTransaction.Charges = new List<TransactionCharge> {
new TransactionCharge {
ERCCharge = 3.19m,
ForexCharge = 0.47m,
FuelIndexCharge = 2.47m,
InflationAdjustment = 0,
MonthlyFC = 13.27m,
REPCharge = 1.39m,
TotalTax = 15.21m
}
};
pendingTransaction.CustomerName = meter.CustomerName;
pendingTransaction.Reference = DateTime.Now.ToString("yyyyMMddhhmmsssfff");
pendingTransaction.IsPending = false;

await resolvedContext.Context.SaveChangesAsync(stoppingToken);
}
}
}
catch (Exception ex) {
Logger.LogError("Error processing pending transactions", ex);
// Let the service contuine to run and attempt processing in the next cycle
}

await Task.Delay(TimeSpan.FromMinutes(1),stoppingToken);
}
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