drop-vertex-by-id

README

drop-vertex-by-id

The basics of dropping vertices using only their IDs using the DropVertexByID function in the Grammes client.

Description

drop-vertex-by-id demonstrates how to drop specific vertices on the graph using their IDs. Specifically this examples shows how to drop the vertices using the DropVertexByID function in the Grammes client which takes in an object for the ID of the vertex.

Prerequisites

• go 1.12
• Git
• Elastic Search
• Cassandra
  • Java 8

Running

To run this test you will need a TinkerPop server running and a graph database to connect to locally. This example was tested while using JanusGraph which can be used by locating yourself to the root directory of the Grammes project.

cd $GOPATH/src/github.com/betty-labs/grammes

After locating yourself here then you may change directory to the /scripts folder.

cd scripts

Finally you may run the janusgraph.sh script to begin a local instance of JanusGraph. This will begin the TinkerPop server for you as well.

./janusgraph.sh

For further instructions please find yourself to the root README.md file.

Steps

General steps

• Create a zap logger to help explain what's going on in the test and display the results.
• Creates a Grammes client that connects to a locally hosted TinkerPop server with a WebSocket.
  • For testing this was created using JanusGraph. This can be run in the /scripts directory.
• Drop all of the possible interfering vertices that were already on the graph.
• Defer a drop of all the testing vertices. This is done as clean up.

---

Test specific steps

• Adds testing vertices to the graph
• Drops a specific vertex from the graph using its ID
• Logs the vertex count