public IProjectionStateHandler Create(
string factoryType, string source,
bool enableContentTypeValidation,
Action <int, Action> cancelCallbackFactory = null,
Action <string, object[]> logger = null)
{
var colonPos = factoryType.IndexOf(':');
string kind = null;
string rest = null;
if (colonPos > 0)
{
kind = factoryType.Substring(0, colonPos);
rest = factoryType.Substring(colonPos + 1);
}
else
{
kind = factoryType;
}
IProjectionStateHandler result;
switch (kind.ToLowerInvariant())
{
case "js":
result = new JintProjectionStateHandler(source, enableContentTypeValidation,
_javascriptCompilationTimeout, _javascriptExecutionTimeout);
break;
case "native":
var type = Type.GetType(rest);
if (type == null)
{
//TODO: explicitly list all the assemblies to look for handlers
type =
AppDomain.CurrentDomain.GetAssemblies()
.Select(v => v.GetType(rest))
.FirstOrDefault(v => v != null);
}
var handler = Activator.CreateInstance(type, source, logger);
result = (IProjectionStateHandler)handler;
break;
default:
throw new NotSupportedException(string.Format("'{0}' handler type is not supported", factoryType));
}
return(result);
}
public static IEnumerable <object[]> GetTestCases()
{
var assembly = typeof(SpecRunner).Assembly;
var specs = assembly.GetManifestResourceNames().Where(x => x.EndsWith("-spec.json"));
foreach (var spec in specs)
{
JsonDocument doc;
using (var stream = assembly.GetManifestResourceStream(spec)) {
doc = JsonDocument.Parse(stream !);
}
var projection = doc.RootElement.GetProperty("projection").GetString();
Assert.False(string.IsNullOrWhiteSpace(projection));
var projectionSourceName = assembly.GetManifestResourceNames()
.SingleOrDefault(x => x.EndsWith($"{projection}.js"));
Assert.NotNull(projectionSourceName);
string source;
using (var stream = assembly.GetManifestResourceStream(projectionSourceName !)) {
Assert.NotNull(stream);
using (var sr = new StreamReader(stream !)) {
source = sr.ReadToEnd();
}
}
List <InputEventSequence> sequences = new();
foreach (var inputEvent in doc.RootElement.GetProperty("input").EnumerateArray())
{
var stream = inputEvent.GetProperty("streamId").GetString();
Assert.NotNull(stream);
var sequence = new InputEventSequence(stream !);
sequences.Add(sequence);
foreach (var e in inputEvent.GetProperty("events").EnumerateArray())
{
var et = e.GetProperty("eventType").GetString();
Assert.NotNull(et);
bool skip = false;
if (e.TryGetProperty("skip", out var skipElement))
{
skip = skipElement.GetBoolean();
}
var initializedPartitions = new List <string>();
if (e.TryGetProperty("initializedPartitions", out var partitions))
{
foreach (var element in partitions.EnumerateArray())
{
initializedPartitions.Add(element.GetString() !);
}
}
var expectedStates = new Dictionary <string, string?>();
int stateCount = 0;
if (e.TryGetProperty("states", out var states))
{
foreach (var state in states.EnumerateArray())
{
stateCount++;
var expectedStateNode = state.GetProperty("state");
var expectedState = expectedStateNode.ValueKind == JsonValueKind.Null ? null : expectedStateNode.GetRawText();
if (!expectedStates.TryAdd(state.GetProperty("partition").GetString() !,
expectedState))
{
throw new InvalidOperationException("Duplicate state");
}
}
}
if (stateCount > 2)
{
throw new InvalidOperationException("Cannot specify more than 2 states");
}
sequence.Events.Add(new InputEvent(et !, e.GetProperty("data").GetRawText(), e.TryGetProperty("metadata", out var metadata) ? metadata.GetRawText() : null, initializedPartitions, expectedStates, skip, e.TryGetProperty("eventId", out var idElement) && idElement.TryGetGuid(out var id) ? id: Guid.NewGuid()));
}
}
var output = doc.RootElement.GetProperty("output");
var sdb = new SourceDefinitionBuilder();
var config = output.GetProperty("config");
foreach (var item in config.EnumerateObject())
{
switch (item.Name)
{
case "definesStateTransform":
if (item.Value.GetBoolean())
{
sdb.SetDefinesStateTransform();
}
break;
case "handlesDeletedNotifications":
sdb.SetHandlesStreamDeletedNotifications(item.Value.GetBoolean());
break;
case "producesResults":
if (item.Value.GetBoolean())
{
sdb.SetOutputState();
}
break;
case "definesFold":
if (item.Value.GetBoolean())
{
sdb.SetDefinesFold();
}
break;
case "resultStreamName":
sdb.SetResultStreamNameOption(item.Value.GetString());
break;
case "partitionResultStreamNamePattern":
sdb.SetPartitionResultStreamNamePatternOption(item.Value.GetString());
break;
case "$includeLinks":
sdb.SetIncludeLinks(item.Value.GetBoolean());
break;
case "reorderEvents":
sdb.SetReorderEvents(item.Value.GetBoolean());
break;
case "processingLag":
sdb.SetProcessingLag(item.Value.GetInt32());
break;
case "biState":
sdb.SetIsBiState(item.Value.GetBoolean());
break;
case "categories":
foreach (var c in item.Value.EnumerateArray())
{
sdb.FromCategory(c.GetString());
}
break;
case "partitioned":
if (item.Value.GetBoolean())
{
sdb.SetByCustomPartitions();
}
break;
case "events":
foreach (var e in item.Value.EnumerateArray())
{
sdb.IncludeEvent(e.GetString());
}
break;
case "allEvents":
if (item.Value.GetBoolean())
{
sdb.AllEvents();
}
else
{
sdb.NotAllEvents();
}
break;
case "allStreams":
if (item.Value.GetBoolean())
{
sdb.FromAll();
}
break;
default:
throw new Exception($"unexpected property in expected config {item.Name}");
}
}
#nullable disable
List <OutputEvent> expectedEmittedEvents = new();
if (output.TryGetProperty("emitted", out var expectedEmittedElement))
{
foreach (var element in expectedEmittedElement.EnumerateObject())
{
var stream = element.Name;
foreach (var eventElement in element.Value.EnumerateArray())
{
if (eventElement.ValueKind == JsonValueKind.String)
{
expectedEmittedEvents.Add(
new OutputEvent(stream, "$>", eventElement.GetString(), null));
}
}
}
}
JintProjectionStateHandler runner = null;
IQuerySources definition = null;
IQuerySources expectedDefinition = sdb.Build();
yield return(WithOutput($"{projection} compiles", o => {
runner = new JintProjectionStateHandler(source, true,
TimeSpan.FromMilliseconds(100), TimeSpan.FromMilliseconds(100));
}));
yield return(For($"{projection} getDefinition", () => {
definition = runner.GetSourceDefinition();
}));
yield return(For($"{projection} qs.AllStreams", () => Assert.Equal(expectedDefinition.AllStreams, definition.AllStreams)));
yield return(For($"{projection} qs.Categories", () => Assert.Equal(expectedDefinition.Categories, definition.Categories)));
yield return(For($"{projection} qs.Streams", () => Assert.Equal(expectedDefinition.Streams, definition.Streams)));
yield return(For($"{projection} qs.AllEvents", () => Assert.Equal(expectedDefinition.AllEvents, definition.AllEvents)));
yield return(For($"{projection} qs.Events", () => Assert.Equal(expectedDefinition.Events, definition.Events)));
yield return(For($"{projection} qs.ByStreams", () => Assert.Equal(expectedDefinition.ByStreams, definition.ByStreams)));
yield return(For($"{projection} qs.ByCustomPartitions", () => Assert.Equal(expectedDefinition.ByCustomPartitions, definition.ByCustomPartitions)));
yield return(For($"{projection} qs.DefinesStateTransform", () => Assert.Equal(expectedDefinition.DefinesStateTransform, definition.DefinesStateTransform)));
yield return(For($"{projection} qs.DefinesFold", () => Assert.Equal(expectedDefinition.DefinesFold, definition.DefinesFold)));
yield return(For($"{projection} qs.HandlesDeletedNotifications", () => Assert.Equal(expectedDefinition.HandlesDeletedNotifications, definition.HandlesDeletedNotifications)));
yield return(For($"{projection} qs.ProducesResults", () => Assert.Equal(expectedDefinition.ProducesResults, definition.ProducesResults)));
yield return(For($"{projection} qs.IsBiState", () => Assert.Equal(expectedDefinition.IsBiState, definition.IsBiState)));
yield return(For($"{projection} qs.IncludeLinksOption", () => Assert.Equal(expectedDefinition.IncludeLinksOption, definition.IncludeLinksOption)));
yield return(For($"{projection} qs.ResultStreamNameOption", () => Assert.Equal(expectedDefinition.ResultStreamNameOption, definition.ResultStreamNameOption)));
yield return(For($"{projection} qs.PartitionResultStreamNamePatternOption", () => Assert.Equal(expectedDefinition.PartitionResultStreamNamePatternOption,
definition.PartitionResultStreamNamePatternOption)));
yield return(For($"{projection} qs.ReorderEventsOption", () => Assert.Equal(expectedDefinition.ReorderEventsOption, definition.ReorderEventsOption)));
yield return(For($"{projection} qs.ProcessingLagOption", () => Assert.Equal(expectedDefinition.ProcessingLagOption, definition.ProcessingLagOption)));
yield return(For($"{projection} qs.LimitingCommitPosition", () => Assert.Equal(expectedDefinition.LimitingCommitPosition, definition.LimitingCommitPosition)));
var partitionedState = new Dictionary <string, string>();
var sharedStateInitialized = false;
var revision = new Dictionary <string, long>();
List <EmittedEventEnvelope> actualEmittedEvents = new();
for (int i = 0; i < sequences.Count; i++)
{
var sequence = sequences[i];
if (!revision.TryGetValue(sequence.Stream, out _))
{
revision[sequence.Stream] = 0;
}
for (int j = 0; j < sequences[i].Events.Count; j++)
{
var logPosition = i * 100 + j;
var flags = PrepareFlags.IsJson | PrepareFlags.Data;
if (j == 0)
{
flags |= PrepareFlags.TransactionBegin;
}
if (j == sequence.Events.Count - 1)
{
flags |= PrepareFlags.TransactionEnd;
}
/*Sequence:
* Get partition if bycustom partition or by stream
* if the partition is null or an empty string skip this event (NB: need to indicate that an event should be skipped)
* load the state if it doesn't exist or tell the projection to init state
* init shared if it doesn't exist
* if init was state was called, call created
* if processing a delete, call partition deleted (NB: bistate partitions do not support deletes)
* process the event
* save any shared state if it isn't null
* save any state
* save emitted events to verify later
*/
var @event = sequence.Events[j];
var body = JObject.Parse(@event.Body).ToString(Formatting.Indented);
var metadata = Array.Empty <byte>();
if (@event.Metadata != null)
{
metadata = Utf8NoBom.GetBytes(JObject.Parse(@event.Metadata).ToString(Formatting.Indented));
}
var er = new EventRecord(
revision[sequence.Stream], logPosition, Guid.NewGuid(), @event.EventId, i, j,
sequence.Stream, i, DateTime.Now, flags, @event.EventType,
Utf8NoBom.GetBytes(body), metadata);
var e = new ResolvedEvent(EventStore.Core.Data.ResolvedEvent.ForUnresolvedEvent(er, logPosition), Array.Empty <byte>());
if (@event.Skip)
{
yield return(For($"{projection} skips {er.EventNumber}@{sequence.Stream}",
() => Assert.Null(runner.GetStatePartition(CheckpointTag.Empty, "", e))));
}
else
{
var expectedPartition = "";
if (expectedDefinition.DefinesFold)
{
if (@event.ExpectedStates.Any())
{
expectedPartition = @event.ExpectedStates
.SingleOrDefault(x => string.Empty != x.Key).Key ?? string.Empty;
if (expectedPartition != string.Empty)
{
yield return(For(
$"{projection} {er.EventNumber}@{sequence.Stream} returns expected partition",
() => Assert.Equal(expectedPartition,
runner.GetStatePartition(CheckpointTag.Empty, "", e))));
foreach (var initializedState in @event.InitializedPartitions)
{
yield return(For(
$"should not have already initialized \"{initializedState}\" at {er.EventNumber}@{sequence.Stream}",
() => Assert.DoesNotContain(initializedState,
(IReadOnlyDictionary <string, string>)partitionedState)));
}
}
if (expectedDefinition.IsBiState && !sharedStateInitialized)
{
sharedStateInitialized = true;
yield return(For("initializes shared state without error", () => {
runner.InitializeShared();
}));
}
if ([email protected](expectedPartition))
{
yield return(For(
$"can load current state at {er.EventNumber}@{sequence.Stream}",
() => {
Assert.True(
partitionedState.TryGetValue(expectedPartition, out var value),
$"did not find expected state for partition{expectedPartition}");
runner.Load(value);
}));
