Reading of DBname.system.indexes failed on Atlas cluster by mongobee after getting connected

Question

I have a Jhipster Spring boot project. Recently I shifted from mlabs standalone sandboxes to Atlas cluster sandbox M0 Free tier replica set. It even worked and I h

Answer 1

Came across this issue this morning. Heres a quick and dirty monkey-patch for the problem:

package com.github.mongobee.dao;

import com.github.mongobee.changeset.ChangeEntry;
import com.mongodb.BasicDBObject;
import com.mongodb.DB;
import com.mongodb.DBCollection;
import com.mongodb.DBObject;

import java.util.List;

import static com.github.mongobee.changeset.ChangeEntry.CHANGELOG_COLLECTION;

public class ChangeEntryIndexDao {

    public void createRequiredUniqueIndex(DBCollection collection) {
        collection.createIndex(new BasicDBObject()
                        .append(ChangeEntry.KEY_CHANGEID, 1)
                        .append(ChangeEntry.KEY_AUTHOR, 1),
                new BasicDBObject().append("unique", true));
    }

    public DBObject findRequiredChangeAndAuthorIndex(DB db) {
        DBCollection changelogCollection = db.getCollection(CHANGELOG_COLLECTION);
        List indexes = changelogCollection.getIndexInfo();
        if (indexes == null) return null;
        for (DBObject index : indexes) {
            BasicDBObject indexKeys = ((BasicDBObject) index.get("key"));
            if (indexKeys != null && (indexKeys.get(ChangeEntry.KEY_CHANGEID) != null && indexKeys.get(ChangeEntry.KEY_AUTHOR) != null)) {
                return index;
            }
        }
        return null;
    }

    public boolean isUnique(DBObject index) {
        Object unique = index.get("unique");
        if (unique != null && unique instanceof Boolean) {
            return (Boolean) unique;
        } else {
            return false;
        }
    }

    public void dropIndex(DBCollection collection, DBObject index) {
        collection.dropIndex(index.get("name").toString());
    }

}