Returns number of indexes on each collection for a given database

getIndexDatabyBounds.js

var colls = db.getCollectionNames();
var ret = [];

colls.forEach(function(coll) {
    var indexes = db.getCollection(coll).getIndexes();
    var len = indexes.length 
    if (len >= 10) {
      ret.push({ "name": coll, "length": len, "data": indexes});
    }
})

printjson(ret)

getTotalIndexCountPerCollection.js

var colls = db.getCollectionNames();
var ret = [];

colls.forEach(function(coll) {
    var indexes = db.getCollection(coll).getIndexes();
    var len = indexes.length 
    ret.push({ "name": coll, "length": len, "data": indexes});
})

printjson(ret)

getTotalIndexesWithUsage.js

var colls = db.getCollectionNames();
var ret = [];

colls.forEach(function(coll) {
    var indexes = db.getCollection(coll).getIndexes();
    var stats = db.getCollection(coll).aggregate( [ { $indexStats: { } } ] );
    var len = indexes.length 
    ret.push({ "name": coll, "length": len, "data": stats._batch});
})

printjson(ret)