public async Task Trigger(
ScheduledCommand scheduled,
SchedulerAdvancedResult result,
CommandSchedulerDbContext db)
{
await deliver(scheduled, result, db);
}
internal async Task Trigger(
ScheduledCommand scheduled,
SchedulerAdvancedResult result,
CommandSchedulerDbContext db)
{
var deliver = commandDispatchers.IfContains(scheduled.AggregateType)
.ElseDefault();
if (deliver == null)
{
// QUESTION: (Trigger) is this worth raising a warning for or is there a reasonable chance that not registering a handler was deliberate?
// var error = ScheduledCommandFailure();
//
// activity.OnNext(new CommandSchedulerActivity(scheduled, error));
//
// result.Add(error);
// db.Errors.Add(error);
}
else
{
await deliver(scheduled);
result.Add(scheduled.Result);
}
scheduled.Attempts++;
await db.SaveChangesAsync();
}
private async Task <SchedulerAdvancedResult> Advance(string clockName,
DateTimeOffset?to = null,
TimeSpan?by = null,
Func <IQueryable <ScheduledCommand>, IQueryable <ScheduledCommand> > query = null)
{
if (clockName == null)
{
throw new ArgumentNullException("clockName");
}
if (to == null && @by == null)
{
throw new ArgumentException("Either to or by must be specified.");
}
using (var db = createCommandSchedulerDbContext())
{
var clock = await db.Clocks.SingleOrDefaultAsync(c => c.Name == clockName);
if (clock == null)
{
throw new ObjectNotFoundException(string.Format("No clock named {0} was found.", clockName));
}
to = to ?? clock.UtcNow.Add(@by.Value);
if (to < clock.UtcNow)
{
throw new InvalidOperationException(string.Format("A clock cannot be moved backward. ({0})", new
{
Clock = clock.ToJson(),
RequestedTime = to
}));
}
var result = new SchedulerAdvancedResult(to.Value);
clock.UtcNow = to.Value;
await db.SaveChangesAsync();
var commands = db.ScheduledCommands
.Due(asOf: to)
.Where(c => c.Clock.Id == clock.Id);
if (query != null)
{
commands = query(commands);
}
// ToArray closes the connection so that when we perform saves during the loop there are no connection errors
foreach (var scheduled in await commands.ToArrayAsync())
{
//clock.UtcNow = scheduled.DueTime ?? to.Value;
await Trigger(scheduled, result, db);
}
return(result);
}
}
private async Task<SchedulerAdvancedResult> Advance(
string clockName,
DateTimeOffset? to = null,
TimeSpan? by = null,
Func<IQueryable<ScheduledCommand>, IQueryable<ScheduledCommand>> query = null)
{
if (clockName == null)
{
throw new ArgumentNullException(nameof(clockName));
}
if (to == null && by == null)
{
throw new ArgumentException($"Either {nameof(to)} or {nameof(by)} must be specified.");
}
using (var db = createCommandSchedulerDbContext())
{
var clock = await db.Clocks.SingleOrDefaultAsync(c => c.Name == clockName);
if (clock == null)
{
throw new ObjectNotFoundException($"No clock named {clockName} was found.");
}
to = to ?? clock.UtcNow.Add(by.Value);
if (to < clock.UtcNow)
{
throw new InvalidOperationException($"A clock cannot be moved backward. ({new { Clock = clock.ToJson(), RequestedTime = to }})");
}
var result = new SchedulerAdvancedResult(to.Value);
clock.UtcNow = to.Value;
await db.SaveChangesAsync();
var commands = db.ScheduledCommands
.Due(asOf: to)
.Where(c => c.Clock.Id == clock.Id);
if (query != null)
{
commands = query(commands);
}
// ToArray closes the connection so that when we perform saves during the loop there are no connection errors
foreach (var scheduled in await commands.ToArrayAsync())
{
await Configuration.Current.DeserializeAndDeliver(scheduled, db);
result.Add(scheduled.Result);
}
return result;
}
}
/// <summary>
/// Triggers all commands matched by the specified query.
/// </summary>
/// <param name="query">The query.</param>
/// <returns>
/// A result summarizing the triggered commands.
/// </returns>
/// <exception cref="System.ArgumentNullException">query</exception>
/// <remarks>If the query matches commands that have been successfully applied already or abandoned, they will be re-applied.</remarks>
public async Task<SchedulerAdvancedResult> Trigger(Func<IQueryable<ScheduledCommand>, IQueryable<ScheduledCommand>> query)
{
// QUESTION: (Trigger) re: the remarks XML comment, would it be clearer to have two methods, e.g. something like TriggerAnyCommands and TriggerEligibleCommands?
if (query == null)
{
throw new ArgumentNullException(nameof(query));
}
var result = new SchedulerAdvancedResult();
using (var db = createCommandSchedulerDbContext())
{
var commands = query(db.ScheduledCommands).ToArray();
foreach (var scheduled in commands)
{
await Trigger(scheduled, result, db);
}
}
return result;
}
private async Task<SchedulerAdvancedResult> Advance(string clockName,
DateTimeOffset? to = null,
TimeSpan? by = null,
Func<IQueryable<ScheduledCommand>, IQueryable<ScheduledCommand>> query = null)
{
if (clockName == null)
{
throw new ArgumentNullException(nameof(clockName));
}
if (to == null && @by == null)
{
throw new ArgumentException($"Either {nameof(to)} or {nameof(by)} must be specified.");
}
using (var db = createCommandSchedulerDbContext())
{
var clock = await db.Clocks.SingleOrDefaultAsync(c => c.Name == clockName);
if (clock == null)
{
throw new ObjectNotFoundException($"No clock named {clockName} was found.");
}
to = to ?? clock.UtcNow.Add(@by.Value);
if (to < clock.UtcNow)
{
throw new InvalidOperationException($"A clock cannot be moved backward. ({new { Clock = clock.ToJson(), RequestedTime = to }})");
}
var result = new SchedulerAdvancedResult(to.Value);
clock.UtcNow = to.Value;
await db.SaveChangesAsync();
var commands = db.ScheduledCommands
.Due(asOf: to)
.Where(c => c.Clock.Id == clock.Id);
if (query != null)
{
commands = query(commands);
}
// ToArray closes the connection so that when we perform saves during the loop there are no connection errors
foreach (var scheduled in await commands.ToArrayAsync())
{
await Trigger(scheduled, result, db);
}
return result;
}
}
public async Task Trigger(
ScheduledCommand scheduled,
SchedulerAdvancedResult result,
CommandSchedulerDbContext db) =>
await deliver(scheduled, result, db);
public override async Task When_triggering_specific_commands_then_the_result_can_be_used_to_evaluate_failures()
{
// arrange
var target = new CommandTarget(Any.CamelCaseName());
await store.Put(target);
var schedulerAdvancedResult = new SchedulerAdvancedResult();
// act
await scheduler.Schedule(target.Id,
new TestCommand(isValid: false),
Clock.Now().AddDays(2));
using (var db = Configuration.Current.CommandSchedulerDbContext())
{
var aggregateId = target.Id.ToGuidV3();
var command = db.ScheduledCommands
.Single(c => c.AggregateId == aggregateId);
await Configuration.Current
.SchedulerClockTrigger()
.Trigger(command, schedulerAdvancedResult, db);
}
//assert
schedulerAdvancedResult
.FailedCommands
.Should()
.HaveCount(1);
}
public async Task Trigger(ScheduledCommand scheduled, SchedulerAdvancedResult result, CommandSchedulerDbContext db)
{
await ClockTrigger.Trigger(scheduled, result, db);
}