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Add Domain project and shifted handlers to application.

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This commit is contained in:
brianj
2026-07-15 16:10:00 +02:00
parent 656f545281
commit 0376b58a33
16 changed files with 229 additions and 52 deletions
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wolverine/a-frame-architecture/FinancialApi.Infrastructure/AccountDbContext.cs
+1 -1
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@@ -1,4 +1,4 @@
using FinancialApi.Application;
using FinancialApi.Domain;
using Microsoft.EntityFrameworkCore;
namespace FinancialApi.Infrastructure;
wolverine/a-frame-architecture/FinancialApi.Infrastructure/AccountQuery.cs
+13
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@@ -0,0 +1,13 @@
using FinancialApi.Application;
using FinancialApi.Domain;
using Microsoft.EntityFrameworkCore;
namespace FinancialApi.Infrastructure;
public class AccountQuery(AccountDbContext db) : IAccountQuery
{
public Task<Account?> FindByIdAsync(int id)
{
return db.Accounts.AsNoTracking().FirstOrDefaultAsync(x => x.Id == id);
}
}
wolverine/a-frame-architecture/FinancialApi.Infrastructure/ApplyFeeHandler.cs
-57
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@@ -1,57 +0,0 @@
using FinancialApi.Application;
using Microsoft.EntityFrameworkCore;
using Wolverine.Attributes;
using Wolverine.Persistence;
namespace FinancialApi.Infrastructure;
public record ApplyFeeCommand(int AccountId, decimal Amount);
public record FeePair(Account CustomerAccount, Account RevenueAccount);
public record FeeAppliedEvent(int AccountId, decimal Amount);
public static class ApplyFeeHandler
{
public static async Task<FeePair?> LoadAsync(
ApplyFeeCommand cmd,
AccountDbContext db)
{
var customer = await db.Accounts.AsNoTracking().SingleOrDefaultAsync(x => x.Id == cmd.AccountId);
var revenue = await db.Accounts.AsNoTracking().SingleOrDefaultAsync(x => x.Id == 99999);
return (customer == null || revenue == null) ? null : new FeePair(customer, revenue);
}
[Transactional]
public static (
IStorageAction<Account> CustomerWrite,
IStorageAction<Account> RevenueWrite,
IStorageAction<JournalEntry> JournalWrite,
FeeAppliedEvent Event
)
Handle(
ApplyFeeCommand cmd,
FeePair pair
)
{
var updatedCustomer = pair.CustomerAccount.ApplyPosting(cmd.Amount, EntryType.Debit);
var updatedRevenue = pair.RevenueAccount.ApplyPosting(cmd.Amount, EntryType.Credit);
var lines = new List<JournalLine>
{
new(pair.CustomerAccount.Id, cmd.Amount, EntryType.Debit),
new(9999, cmd.Amount, EntryType.Credit)
};
var journalEntry = BalancedJournal.Create(Guid.NewGuid(),
$"Service Fee Applied: {cmd.Amount} to Account {cmd.AccountId}",
DateTimeOffset.UtcNow, lines);
var @event = new FeeAppliedEvent(cmd.AccountId, cmd.Amount);
return (
Storage.Update(updatedCustomer),
Storage.Update(updatedRevenue),
Storage.Insert(journalEntry.Entry),
@event
);
}
}
wolverine/a-frame-architecture/FinancialApi.Infrastructure/FinancialApi.Infrastructure.csproj
+1
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@@ -8,6 +8,7 @@
<ItemGroup>
<ProjectReference Include="..\FinancialApi.Application\FinancialApi.Application.csproj" />
<ProjectReference Include="..\FinancialApi.Domain\FinancialApi.Domain.csproj" />
</ItemGroup>
<ItemGroup>
wolverine/a-frame-architecture/FinancialApi.Infrastructure/Migrations/20260715100428_UpdateAccountBalances.Designer.cs
Generated
+115
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// <auto-generated />
using System;
using FinancialApi.Infrastructure;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Migrations;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
#nullable disable
namespace FinancialApi.Infrastructure.Migrations
{
[DbContext(typeof(AccountDbContext))]
[Migration("20260715100428_UpdateAccountBalances")]
partial class UpdateAccountBalances
{
/// <inheritdoc />
protected override void BuildTargetModel(ModelBuilder modelBuilder)
{
#pragma warning disable 612, 618
modelBuilder.HasAnnotation("ProductVersion", "10.0.9");
modelBuilder.Entity("FinancialApi.Application.Account", b =>
{
b.Property<int>("Id")
.ValueGeneratedOnAdd()
.HasColumnType("INTEGER");
b.Property<string>("AccountType")
.IsRequired()
.HasColumnType("TEXT");
b.Property<decimal>("Balance")
.HasColumnType("TEXT");
b.HasKey("Id");
b.ToTable("Accounts");
b.HasData(
new
{
Id = 1,
AccountType = "Credit",
Balance = 10000000.00m
},
new
{
Id = 2,
AccountType = "Liability",
Balance = 50000000.00m
},
new
{
Id = 99999,
AccountType = "Revenue",
Balance = 0.00m
});
});
modelBuilder.Entity("FinancialApi.Application.JournalEntry", b =>
{
b.Property<Guid>("Id")
.ValueGeneratedOnAdd()
.HasColumnType("TEXT");
b.Property<DateTimeOffset>("CreatedAt")
.HasColumnType("TEXT");
b.Property<string>("Description")
.IsRequired()
.HasColumnType("TEXT");
b.HasKey("Id");
b.ToTable("JournalEntries");
});
modelBuilder.Entity("FinancialApi.Application.JournalEntry", b =>
{
b.OwnsMany("FinancialApi.Application.JournalLine", "Lines", b1 =>
{
b1.Property<int>("Id")
.ValueGeneratedOnAdd()
.HasColumnType("INTEGER");
b1.Property<int>("AccountId")
.HasColumnType("INTEGER");
b1.Property<decimal>("Amount")
.HasColumnType("TEXT");
b1.Property<Guid>("JournalEntryId")
.HasColumnType("TEXT");
b1.Property<string>("Type")
.IsRequired()
.HasColumnType("TEXT");
b1.HasKey("Id");
b1.HasIndex("JournalEntryId");
b1.ToTable("JournalLine");
b1.WithOwner()
.HasForeignKey("JournalEntryId");
});
b.Navigation("Lines");
});
#pragma warning restore 612, 618
}
}
}
wolverine/a-frame-architecture/FinancialApi.Infrastructure/TransferFundsHandler.cs
-58
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@@ -1,58 +0,0 @@
using FinancialApi.Application;
using Microsoft.EntityFrameworkCore;
using Wolverine.Attributes;
using Wolverine.Persistence;
namespace FinancialApi.Infrastructure;
public record TransferFundsCommand(int SourceAccountId, int DestinationAccountId, decimal Amount);
public record FundsTransferredEvent(int SourceAccountId, int DestinationAccountId, decimal Amount);
// A simple container to pass our loaded entities into the pure function
public record TransferPair(Account Source, Account Destination);
public static class TransferFundsHandler
{
public static async Task<TransferPair?> LoadAsync(TransferFundsCommand cmd, AccountDbContext db)
{
var source = await db.Accounts.AsNoTracking().FirstOrDefaultAsync(x => x.Id == cmd.SourceAccountId);
var dest = await db.Accounts.AsNoTracking().FirstOrDefaultAsync(x => x.Id == cmd.DestinationAccountId);
if (source == null || dest == null) return null; // Wolverine drops into a 404/Problem if null
return new TransferPair(source, dest);
}
[Transactional]
public static (
IStorageAction<Account> SourceWrite,
IStorageAction<Account> DestWrite,
IStorageAction<JournalEntry> JournalWrite,
FundsTransferredEvent Event
) Handle(TransferFundsCommand cmd, TransferPair pair)
{
var updatedSource = pair.Source.Debit(cmd.Amount);
var updatedDest = pair.Destination.Credit(cmd.Amount);
var lines = new List<JournalLine>
{
new (pair.Source.Id, cmd.Amount, EntryType.Debit),
new (pair.Destination.Id, cmd.Amount, EntryType.Credit)
};
var journalEntry =
BalancedJournal.Create(Guid.NewGuid(),
$"Transfer: {cmd.Amount} from {cmd.SourceAccountId} to {cmd.DestinationAccountId}",
DateTimeOffset.UtcNow, lines);
var @event = new FundsTransferredEvent(cmd.SourceAccountId, cmd.DestinationAccountId, cmd.Amount);
return (
Storage.Update(updatedSource),
Storage.Update(updatedDest),
Storage.Insert(journalEntry.Entry),
@event
);
}
}