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'use strict';
/**
* rename_collection_droptarget.js
*
* Creates a collection and then repeatedly executes the renameCollection
* command against it. Inserts documents into the "to" namespace and specifies
* dropTarget=true.
*/
load('jstests/concurrency/fsm_workload_helpers/drop_utils.js'); // for dropCollections
var $config = (function() {
var data = {
// Use the workload name as a prefix for the collection name,
// since the workload name is assumed to be unique.
prefix: 'rename_collection_droptarget'
};
var states = (function() {
function uniqueCollectionName(prefix, tid, num) {
return prefix + tid + '_' + num;
}
function insert(db, collName, numDocs) {
for (var i = 0; i < numDocs; ++i) {
var res = db[collName].insert({});
assertAlways.writeOK(res);
assertAlways.eq(1, res.nInserted);
}
}
function init(db, collName) {
var num = 0;
this.fromCollName = uniqueCollectionName(this.prefix, this.tid, num++);
this.toCollName = uniqueCollectionName(this.prefix, this.tid, num++);
assertAlways.commandWorked(db.createCollection(this.fromCollName));
}
function rename(db, collName) {
// Clear out the "from" collection and insert 'fromCollCount' documents
var fromCollCount = 7;
assertWhenOwnDB(db[this.fromCollName].drop());
assertAlways.commandWorked(db.createCollection(this.fromCollName));
insert(db, this.fromCollName, fromCollCount);
var toCollCount = 4;
assertAlways.commandWorked(db.createCollection(this.toCollName));
insert(db, this.toCollName, toCollCount);
// Verify that 'fromCollCount' documents exist in the "to" collection
// after the rename occurs
var res =
db[this.fromCollName].renameCollection(this.toCollName, true /* dropTarget */);
assertWhenOwnDB.commandWorked(res);
assertWhenOwnDB.eq(fromCollCount, db[this.toCollName].find().itcount());
assertWhenOwnDB.eq(0, db[this.fromCollName].find().itcount());
// Swap "to" and "from" collections for next execution
var temp = this.fromCollName;
this.fromCollName = this.toCollName;
this.toCollName = temp;
}
return {
init: init,
rename: rename
};
})();
var transitions = {
init: {rename: 1},
rename: {rename: 1}
};
function teardown(db, collName, cluster) {
var pattern = new RegExp('^' + this.prefix + '\\d+_\\d+$');
dropCollections(db, pattern);
}
return {
threadCount: 10,
iterations: 20,
data: data,
states: states,
transitions: transitions,
teardown: teardown
};
})();
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