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'use strict';
/**
* rename_collection_chain.js
*
* Creates a collection and then repeatedly executes the renameCollection
* command against it. The previous "to" namespace is used as the next "from"
* namespace.
*/
load('jstests/concurrency/fsm_workload_helpers/drop_utils.js'); // for dropCollections
var $config = (function() {
var data = {
// Use the workload name as a prefix for the collection name,
// since the workload name is assumed to be unique.
prefix: 'rename_collection_chain'
};
var states = (function() {
function uniqueCollectionName(prefix, tid, num) {
return prefix + tid + '_' + num;
}
function init(db, collName) {
this.fromCollName = uniqueCollectionName(this.prefix, this.tid, 0);
this.num = 1;
assertAlways.commandWorked(db.createCollection(this.fromCollName));
}
function rename(db, collName) {
var toCollName = uniqueCollectionName(this.prefix, this.tid, this.num++);
var res = db[this.fromCollName].renameCollection(toCollName, false /* dropTarget */);
assertWhenOwnDB.commandWorked(res);
this.fromCollName = toCollName;
}
return {
init: init,
rename: rename
};
})();
var transitions = {
init: { rename: 1 },
rename: { rename: 1 }
};
function teardown(db, collName, cluster) {
var pattern = new RegExp('^' + this.prefix + '\\d+_\\d+$');
dropCollections(db, pattern);
}
return {
threadCount: 10,
iterations: 20,
data: data,
states: states,
transitions: transitions,
teardown: teardown
};
})();
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