Counting nodes in a tree of Oak repository using the oak-run console tool

oakTreeNodeCount.groovy

import org.apache.jackrabbit.oak.spi.state.NodeState
import java.util.concurrent.atomic.AtomicInteger

def countNodes(NodeState n, String path = "/", flush = 5000, AtomicInteger count = new AtomicInteger(0), root = true) {
  if(root) {
    println "Counting nodes in tree ${path}"
  }

  cnt = count.incrementAndGet()
  if (cnt % flush == 0) println("  " + cnt)

  try {
    for(child in n.getChildNodeEntries()) {
      countNodes(child.getNodeState(), path + child.getName() + "/", flush, count, false)
    }
  } catch(e) {
    println "warning unable to read node ${path}"
  }

  if(root) {
    println "Total nodes in tree ${path}: ${cnt}"
  }

  return cnt
}

Usage

countNodes(session.workingNode)

Note: This is mainly for Tar SegmentNodeStore. For Mongo based systems, use oak-mongo.js via mongo shell and run oak.countChildren("/path")