Titan on AWS- Prevent dropping of edges and vertex's

Question

Is there a way to run a gremlin server so that the drop command is prevented? I never actually drop any edges or vertex's so I'd like the added assurance that it can't be done by mistake

Answer 1

You could have some luck developing your own TraversalStrategy and intercept the behavior of the .drop() step, preventing it to actually delete data. However, people could still be able to bypass the Gremlin/TinkerPop API and directly manipulate the graph instance and remove graph elements (Vertex, Edge and Property).

Depending on your use case, you might just want to disable any mutation to the graph, and not just the removal of elements:

• At the Titan level, you can use the storage-read.only option which makes the Titan storage backend read only. See Titan v1.0.0 documentation, Ch. 12 - Configuration reference, 12.3.23. storage.
• You can also handle this at the TinkerPop level with the ReadOnlyStrategy Traversal strategy. See TinkerPop v3.0.1 documentation on ReadOnlyStrategy.