oplog-explain.js

dbUrl = conf.mongo.oplogUrl || "mongodb://localhost:27017/local";
dbUrl = dbUrl + '?socketTimeoutMS=3000000'

query = {};
query = {$gte:MongoDB.Timestamp(Date.now()/1000 - 86400, 0)};
// query = {$gte:0};

console.log(query);

// dbUrl = 'mongodb://localhost:27017/local'
// Open the connection to the database
MongoDB.MongoClient.connect(dbUrl, function(err, db) {
  // Get to oplog collection
  db.collection("oplog.rs", function(err, oplog) {
    if (err) {
      return console.log(err);
    }
    // Find the highest timestamp
    oplog.find(
      query,
      {
        explain:true,
        // tailable: true,
        timeout: false,
        awaitdata: true,
        oplogReplay: true,
        cursorReplay: true,
        numberOfRetries: Number.MAX_VALUE // using -1 doesn't work here
      }
    ).toArray(function(err, docs) {
      if (err) {
        return console.error(err);
      }
      console.log(docs);
      process.exit();
    })
  })
})