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'use strict';
const OperationBase = require('./operation').OperationBase;
const applyWriteConcern = require('../utils').applyWriteConcern;
const checkCollectionName = require('../utils').checkCollectionName;
const executeDbAdminCommand = require('./db_ops').executeDbAdminCommand;
const handleCallback = require('../utils').handleCallback;
const loadCollection = require('../dynamic_loaders').loadCollection;
const toError = require('../utils').toError;
class RenameOperation extends OperationBase {
constructor(collection, newName, options) {
super(options);
this.collection = collection;
this.newName = newName;
}
execute(callback) {
const coll = this.collection;
const newName = this.newName;
const options = this.options;
let Collection = loadCollection();
// Check the collection name
checkCollectionName(newName);
// Build the command
const renameCollection = coll.namespace;
const toCollection = coll.s.namespace.withCollection(newName).toString();
const dropTarget = typeof options.dropTarget === 'boolean' ? options.dropTarget : false;
const cmd = { renameCollection: renameCollection, to: toCollection, dropTarget: dropTarget };
// Decorate command with writeConcern if supported
applyWriteConcern(cmd, { db: coll.s.db, collection: coll }, options);
// Execute against admin
executeDbAdminCommand(coll.s.db.admin().s.db, cmd, options, (err, doc) => {
if (err) return handleCallback(callback, err, null);
// We have an error
if (doc.errmsg) return handleCallback(callback, toError(doc), null);
try {
return handleCallback(
callback,
null,
new Collection(
coll.s.db,
coll.s.topology,
coll.s.namespace.db,
newName,
coll.s.pkFactory,
coll.s.options
)
);
} catch (err) {
return handleCallback(callback, toError(err), null);
}
});
}
}
module.exports = RenameOperation;
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