public HttpResponseMessage ExplainGet(string docId)
{
if (string.IsNullOrEmpty(docId))
{
return(GetMessageWithString("Document key is required.", HttpStatusCode.BadRequest));
}
var destinationUrl = GetQueryStringValue("destinationUrl");
if (string.IsNullOrEmpty(destinationUrl))
{
return(GetMessageWithString("Destination url is required.", HttpStatusCode.BadRequest));
}
var databaseName = GetQueryStringValue("databaseName");
if (string.IsNullOrEmpty(databaseName))
{
return(GetMessageWithString("Destination database name is required.", HttpStatusCode.BadRequest));
}
var result = new ReplicationExplanationForDocument
{
Key = docId,
Destination = new ReplicationExplanationForDocument.DestinationInformation
{
Url = destinationUrl,
DatabaseName = databaseName
}
};
var destinations = ReplicationTask.GetReplicationDestinations(x => string.Equals(x.Url, destinationUrl, StringComparison.OrdinalIgnoreCase) && string.Equals(x.Database, databaseName, StringComparison.OrdinalIgnoreCase));
if (destinations == null || destinations.Length == 0)
{
result.Message = string.Format("Could not find replication destination for a given url ('{0}') and database ('{1}').", destinationUrl, databaseName);
return(GetMessageWithObject(result));
}
if (destinations.Length > 1)
{
result.Message = string.Format("There is more than one replication destination for a given url ('{0}') and database ('{1}').", destinationUrl, databaseName);
return(GetMessageWithObject(result));
}
var destination = destinations[0];
var destinationsReplicationInformationForSource = ReplicationTask.GetLastReplicatedEtagFrom(destination);
if (destinationsReplicationInformationForSource == null)
{
result.Message = "Could not connect to destination server.";
return(GetMessageWithObject(result));
}
var destinationId = destinationsReplicationInformationForSource.ServerInstanceId.ToString();
result.Destination.ServerInstanceId = destinationId;
result.Destination.LastDocumentEtag = destinationsReplicationInformationForSource.LastDocumentEtag;
var document = Database.Documents.Get(docId, null);
if (document == null)
{
result.Message = string.Format("Document with given key ('{0}') does not exist.", docId);
return(GetMessageWithObject(result));
}
result.Key = document.Key;
result.Etag = document.Etag;
string reason;
if (destination.FilterDocuments(destinationId, document.Key, document.Metadata, out reason) == false)
{
result.Message = reason;
return(GetMessageWithObject(result));
}
reason = EtagUtil.IsGreaterThan(document.Etag, destinationsReplicationInformationForSource.LastDocumentEtag) ? "Document will be replicated." : "Document should have been replicated.";
result.Message = reason;
return(GetMessageWithObject(result));
}
protected List <ReplicationStrategy> GetReplicationDestinations(Predicate <ReplicationDestination> predicate = null)
{
var destinations = Replication.GetReplicationDestinations(predicate);
return(destinations.Where(x => x.IsETL == false).ToList());
}