bool EvaluateForwardTriggers(IResourceTriggerFilterPolicyCache policyCache, IEntity entity, IEnumerable <long> changedFields, IEnumerable <long> changedRels, IEnumerable <long> changedRevRels, List <Action> postSaveActions)
{
using (Profiler.Measure("ResourceTriggerFilterEventTarget.EvaluateForwardTriggers"))
{
var typeId = entity.TypeIds.FirstOrDefault();
if (typeId != 0)
{
List <ResourceTriggerFilterDef> policies;
if (policyCache.TypePolicyMap.TryGetValue(typeId, out policies))
{
if (policies.Any())
{
// we match on type
var allChanges = changedFields.Union(changedRels).Union(changedRevRels);
//
// Check if our entity matches any of the fields and rels
foreach (var policy in policies)
{
if (policy == null)
{
continue; // assert false
}
var watchedFields = policyCache.PolicyToFieldsMap[policy.Id];
if (!watchedFields.Any() || watchedFields.Intersect(allChanges).Any())
{
var handler = policyCache.PolicyTypeHandlerMap[policy.TypeIds.First()];
if (handler != null)
{
var isNew = entity.IsTemporaryId;
bool result = false;
SecurityBypassContext.RunAsUser(() =>
{
if (handler.OnBeforeSave(policy, entity, isNew, changedFields, changedRels, changedRevRels))
{
result = true;
}
else
{
AddWrappedPostSaveAction(postSaveActions, () => handler.OnAfterSave(policy, entity, isNew, changedFields, changedRels, changedRevRels));
}
});
if (result)
{
return(true); // We failed, so bug out
}
}
}
}
}
}
}
}
return(false);
}
/// <summary>
/// Get the relationships that may have policies that are effected by the deletion of the entity.
/// </summary>
IEnumerable <Tuple <Relationship, Direction> > GetRelsWithPotentialPolicies(IResourceTriggerFilterPolicyCache policyCache, IEntity entity)
{
var forwardRelIds = EntityTypeHelper.GetAllRelationships(entity, Direction.Forward).Select(r => r.Id);
var reverseRelIds = EntityTypeHelper.GetAllRelationships(entity, Direction.Reverse).Select(r => r.Id);
// Prefill cache - note that we are requesting both the toType and fromType for each rel so we only need to do a single trip to the DB
var allRelIds = forwardRelIds.Union(reverseRelIds).Select(r => new EntityRef(r));
BulkPreloader.Preload(new EntityRequest(allRelIds, "toType.id, fromType.id"));
return(GetRelsWithPotentialPolicies(policyCache, forwardRelIds, Direction.Forward).Union(GetRelsWithPotentialPolicies(policyCache, reverseRelIds, Direction.Reverse)));
}
/// <summary>
/// Test the policy for the other end of the relationship
/// </summary>
/// <returns></returns>
void TestOtherEndPolicyAndAct(IResourceTriggerFilterPolicyCache policyCache, long relId, Direction direction, IEntity entity, IEntity otherEntity, Action <ResourceTriggerFilterDef> action)
{
using (Profiler.Measure("ResourceTriggerFilterEventTarget.TestOtherEndPolicyAndAction"))
{
var typeId = otherEntity.TypeIds.First();
List <ResourceTriggerFilterDef> policies;
if (policyCache.TypePolicyMap.TryGetValue(typeId, out policies))
{
foreach (var policy in policies)
{
if (policy.UpdatedRelationshipsToTriggerOn.Any(rel => rel.Id == relId))
{
action(policy);
}
}
}
}
}
IEnumerable <Tuple <Relationship, Direction> > GetRelsWithPotentialPolicies(IResourceTriggerFilterPolicyCache policyCache, IEnumerable <long> relIds, Direction direction)
{
// Get the rels policies for the other end of the relationships
var filteredRels = Entity.Get <Relationship>(relIds).Where(r =>
{
var eType = direction == Direction.Forward ? r?.ToType : r?.FromType;
if (eType == null)
{
return(false); // to handle some malformed relationships
}
var policies = policyCache.TypePolicyMap[eType.Id];
if (policies == null)
{
return(false);
}
return(policies.Any(p => p.UpdatedRelationshipsToTriggerOn.Contains(r, EntityIdEqualityComparer <Relationship> .Instance)));
});
return(filteredRels.Select(r => new Tuple <Relationship, Direction>(r, direction)));
}
bool EvaluateReverseTriggers(IResourceTriggerFilterPolicyCache policyCache, IEntity entity, IEnumerable <long> changedFields, IEnumerable <long> changedRels, IEnumerable <long> changedRevRels, List <Action> postSaveActions)
{
using (Profiler.Measure("ResourceTriggerFilterEventTarget.EvaluateReverseTriggers"))
{
//
// Check if any of the related changed resources match any of our policies
// TODO: Can we filter this earlier so I don't have to grab the type of every other end?
var allChangedRels = changedRels.Select(rId => new { Id = rId, Direction = Direction.Forward }).Union(changedRevRels.Select(rId => new { Id = rId, Direction = Direction.Reverse }));
var relChanges = allChangedRels.ToDictionary(rd => rd, rd => entity.GetRelationships(rd.Id, rd.Direction)); // TODO: Can we make sure that all the type information for the entities is grabbed in a single hit? (It might already be happening)
foreach (var kvp in relChanges)
{
var relId = kvp.Key.Id;
var direction = kvp.Key.Direction;
var otherEntities = kvp.Value;
using (Profiler.Measure("ResourceTriggerFilterEventTarget.EvaluateReverseTriggers adds"))
{
//
// Test for any added entities that a policy may apply to
//
var added = GetAdded(otherEntities);
foreach (var otherEntity in added)
{
if (otherEntity != null)
{
bool result = false;
TestOtherEndPolicyAndAct(policyCache, relId, direction, entity, otherEntity, (policy) =>
{
var handler = policyCache.PolicyTypeHandlerMap[policy.TypeIds.First()];
SecurityBypassContext.RunAsUser(() =>
{
if (handler.OnBeforeReverseAdd(policy, relId, direction.Reverse(), otherEntity, entity, entity.IsTemporaryId))
{
result = true;
}
else
{
AddWrappedPostSaveAction(postSaveActions, () => handler.OnAfterReverseAdd(policy, relId, direction.Reverse(), otherEntity, entity, entity.IsTemporaryId));
}
});
});
if (result)
{
return(true); // It failed so bug out
}
}
}
}
using (Profiler.Measure("ResourceTriggerFilterEventTarget.EvaluateReverseTriggers removes"))
{
//
// Test for any removed policies that might apply to
//
var removed = GetRemoved(otherEntities);
foreach (var otherEntity in removed)
{
if (otherEntity != null)
{
bool result = false;
TestOtherEndPolicyAndAct(policyCache, relId, direction, entity, otherEntity, (policy) =>
{
var handler = policyCache.PolicyTypeHandlerMap[policy.TypeIds.First()];
SecurityBypassContext.RunAsUser(() =>
{
if (handler.OnBeforeReverseRemove(policy, relId, direction.Reverse(), otherEntity, entity))
{
result = true;
}
else
{
AddWrappedPostSaveAction(postSaveActions, () => handler.OnAfterReverseRemove(policy, relId, direction.Reverse(), otherEntity, entity));
}
});
});
if (result)
{
return(true); // It failed so bug out
}
}
}
}
}
}
return(false);
}
