private bool WillReplicateByScript(string script, JsonDocument document)
{
var scriptedPatchRequest = new ScriptedPatchRequest
{
Script = script
};
var patcher = new ReplicationScriptedJsonPatcher(database, scriptedPatchRequest);
using (var scope = new DefaultScriptedJsonPatcherOperationScope(database))
{
try
{
patcher.Apply(scope, document.ToJson(), scriptedPatchRequest, document.SerializedSizeOnDisk);
//null means that we should skip this document
return(scope.ActualPatchResult != JsValue.Null);
}
catch (Exception e)
{
//this document will not be replicated
return(false);
}
}
}
public IEnumerable <JsonDocument> Handle(IEnumerable <JsonDocument> docs)
{
if (strategy.SpecifiedCollections == null || strategy.SpecifiedCollections.Count == 0)
{
return(docs);
}
return(docs.Select(doc =>
{
var collection = doc.Metadata.Value <string>(Constants.RavenEntityName);
string script;
if (string.IsNullOrEmpty(collection) || strategy.SpecifiedCollections.TryGetValue(collection, out script) == false)
{
if (Log.IsDebugEnabled)
{
Log.Debug(string.Format("Will not replicate document '{0}' to '{1}' because the replication of specified collection is turned on while the document does not belong to any of them", doc.Key, destinationId));
}
return null;
}
if (script == null)
{
return doc;
}
var scriptedPatchRequest = new ScriptedPatchRequest
{
Script = script
};
var patcher = new ReplicationScriptedJsonPatcher(database, scriptedPatchRequest);
using (var scope = new DefaultScriptedJsonPatcherOperationScope(database))
{
try
{
var transformedDoc = patcher.Apply(scope, doc.ToJson(), scriptedPatchRequest, doc.SerializedSizeOnDisk);
if (scope.ActualPatchResult == JsValue.Null) // null means that document should be skip
{
if (Log.IsDebugEnabled)
{
Log.Debug(string.Format("Will not replicate document '{0}' to '{1}' because a collection specific script filtered it out", doc.Key, destinationId));
}
return null;
}
doc.Metadata = (RavenJObject)transformedDoc[Constants.Metadata];
transformedDoc.Remove(Constants.Metadata);
doc.DataAsJson = transformedDoc;
return doc;
}
catch (ParseException e)
{
Log.WarnException(string.Format("Could not parse replication transformation script of '{0}' collection on document {1}", collection, doc.Key), e);
throw;
}
catch (Exception e)
{
Log.WarnException(string.Format("Could not apply replication transformation script of '{0}' collection on document {1}", collection, doc.Key), e);
throw;
}
}
})
.Where(x => x != null));
}
