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using System.Text.Json;
using KeyLoad.ProcessRecoveryTests.StorageRecovery;
using KeyLoad.Storage;
using KeyLoad.Storage.ZoneTree;
using ManagedCode.Communication;
using ManagedCode.Communication.Commands;
using Microsoft.Extensions.Options;
namespace KeyLoad.FunctionalTests;
/// <summary>Owns a real canonical ZoneTree store for local Core operation qualification.</summary>
internal sealed class TestDatabase : IDisposable
{
private const string DirectoryPrefix = "keyload-unit-";
private const string GuidFormat = "N";
private const string FreshDirectoryRequired = "The fixture must own a fresh directory.";
private const string TenantId = "tenant";
private const string DatabaseId = "database";
private const string TransactionDomainId = "orders";
private const string PartitionKey = "customer-1";
private const string RootPrincipalId = "root";
private const string RootCredential = "root.unit-test-credential-32-characters";
private readonly TestDatabaseCloseState closeState = new();
private readonly Func<IAtomicStore, DatabaseEngine> createDatabase;
private readonly IOptions<DatabaseLimits> limits;
private readonly TestDatabaseOriginalResourceCommands originalResources = new();
public string Directory { get; }
public ZoneTreeStore Store { get; }
internal IOptions<ZoneTreeStorageExecutionOptions> StorageExecution { get; } = UnitExecutionOptions.StorageExecution();
public DatabaseEngine Database { get; }
public PartitionRef Partition { get; } = new(TenantId, DatabaseId, TransactionDomainId, PartitionKey);
public TestDatabase(DatabaseLimits? limits = null, string? directory = null,
ClaimsExecutionOptions? claimsExecution = null,
TimeProvider? timeProvider = null, TimeSeriesExecutionOptions? timeSeriesExecution = null,
Action<CommitStage, long, int>? storeFaultObserver = null)
{
Directory = directory ?? Path.Combine(StorageTrialDirectory.ResolveExistingDirectory(new(AppContext.BaseDirectory)),
DirectoryPrefix + Guid.NewGuid().ToString(GuidFormat));
if (System.IO.Directory.Exists(Directory))
{
throw new ArgumentException(FreshDirectoryRequired, nameof(directory));
}
ZoneTreeStore? acquired = null;
try
{
var clock = timeProvider ?? TimeProvider.System;
var storeOptions = new ZoneTreeStoreOptions(Directory) { FaultObserver = storeFaultObserver };
Store = acquired = new(storeOptions, StorageExecution, timeProvider: clock);
this.limits = UnitExecutionOptions.DatabaseLimits(limits);
createDatabase = TestDatabaseEngineFactory.Capture(this.limits, UnitExecutionOptions.RuntimeClaimsExecution(claimsExecution), timeSeriesExecution, clock);
Database = createDatabase(Store);
TestDatabaseEngineFactory.Bootstrap(Database, RootPrincipalId, RootCredential);
}
catch (Exception primary)
{
TestDatabaseDisposal.Rollback(primary, acquired, acquisitionStarted: false, DeleteOwnedDirectory);
throw;
}
}
public Result<object> Submit<T>(OperationKind kind, T payload, string principal = RootPrincipalId,
Guid? id = null, DateTimeOffset? time = null)
{
var operation = Database.CreateCommand(kind, id ?? Guid.NewGuid(), principal,
time ?? default, JsonSerializer.Serialize(payload, JsonDefaults.Options));
var previousCanonical = (TestDatabaseOriginalResourceCommands.Begin(Database, operation)).Value;
var result = time.HasValue ? Database.Apply(operation) : Database.ApplyEmbedded(operation, cancellationToken: default);
originalResources.Observe(Database, operation, result, previousCanonical);
return result;
}
internal Result<object> SubmitIssued(Command<DatabaseCommand> operation)
{
var original = Database.OwnCommand(operation);
var previousCanonical = (TestDatabaseOriginalResourceCommands.Begin(Database, original)).Value;
var result = Database.ApplyEmbedded(original, CancellationToken.None);
originalResources.Observe(Database, original, result, previousCanonical);
return result;
}
internal Result<object> SubmitAtOriginalTime(DatabaseEngine owner, Command<DatabaseCommand> operation)
{
var original = owner.OwnCommand(operation);
var previousCanonical = (TestDatabaseOriginalResourceCommands.Begin(owner, original)).Value;
var result = owner.Apply(original);
originalResources.Observe(owner, original, result, previousCanonical);
return result;
}
internal Result<object> SubmitIssuedEmbedded(Command<DatabaseCommand> operation, CancellationToken cancellationToken)
{
var verified = Database.OwnCommand(operation);
var previousCanonical = (TestDatabaseOriginalResourceCommands.Begin(Database, verified)).Value;
var result = Database.ApplyEmbedded(verified, cancellationToken);
originalResources.Observe(Database, verified, result, previousCanonical);
return result;
}
internal void JoinStorageReadCut(CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
Store.Read(_ =>
{
cancellationToken.ThrowIfCancellationRequested();
return Store.Position;
});
}
internal StoredOutcome ReadStoredOutcome(Guid commandId)
=> OutcomeStoreOracle.ReadStored(Database, commandId, CancellationToken.None);
internal EntityRef ExpectedReference(EntityRef literal) => originalResources.Reference(literal);
internal ResourceLifetime ExpectedLifetime(string resourceName)
=> originalResources.Lifetime(Partition.TenantId, Partition.DatabaseId, resourceName);
internal CommitToken NextCommitToken(PartitionRef? partition = null)
=> ExpectedCanonicalCommit.Next(Database, partition ?? Partition);
internal StoredOutcome ReadStoredOutcome(Command<DatabaseCommand> command)
=> OutcomeStoreOracle.ReadStored(Store, command)
?? throw new InvalidOperationException("The exact stored test outcome is missing.");
internal DatabaseEngine CreateConfiguredDatabase(IAtomicStore ownedStore) => createDatabase(ownedStore);
internal (long AppliedPosition, long StorePosition) ReadCanonicalCut()
=> Store.Read(view => (view.ReadOwnedValue(StorageCommandKeys.Applied(Partition)) is { } bytes
? OrleansSerialization.Deserialize<StoragePartitionPosition>(bytes).Position : default(long), Store.Position));
internal static ReadExecutionBudget CreateReadWork(CancellationToken cancellationToken)
=> new(cancellationToken);
internal void JoinOwnedResources()
{
lock (closeState.Gate)
{
if (closeState.TryBeginJoin())
{
var failures = new List<Exception>();
KeyLoad.Server.ServerFailureObserver.Observe(Store.Dispose, failures);
closeState.CompleteJoin(failures);
}
}
}
public ResourceDefinition Configure(string name, ResourceKind kind, string? domain = null,
IndexDefinition[]? indexes = null, SensitiveFieldPolicy[]? fields = null, QueuePolicy? queuePolicy = null)
=> TestDatabaseResourceConfiguration.Apply(this, name, kind, domain, indexes, fields, queuePolicy);
public CommitReceipt Commit(params Mutation[] mutations)
{
var id = Guid.NewGuid();
return Submit(OperationKind.Batch, new CommandRequest(id, Partition, [.. mutations]), id: id).Get<CommitReceipt>();
}
public void Dispose()
{
JoinOwnedResources();
closeState.Delete(DeleteOwnedDirectory);
}
private void DeleteOwnedDirectory()
{
if (System.IO.Directory.Exists(Directory))
{
System.IO.Directory.Delete(Directory, true);
}
}
}