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'use strict';
/**
* create_database.js
*
* Repeatedly creates and drops a database, with the focus on creation using different name casing.
* Create using all different methods, implicitly by inserting, creating views/indexes etc.
*
* Each thread uses its own database, though sometimes threads may try to create databases with
* names that only differ in case, expecting the appriopriate error code.
*
* @tags: [creates_background_indexes]
*/
load('jstests/concurrency/fsm_workload_helpers/server_types.js'); // for isEphemeralForTest
load("jstests/concurrency/fsm_workload_helpers/assert_handle_fail_in_transaction.js");
var $config = (function() {
let data = {
checkCommandResult: function checkCommandResult(mayFailWithDatabaseDifferCase, res) {
if (mayFailWithDatabaseDifferCase && !res.ok)
assertWorkedOrFailedHandleTxnErrors(
res,
[ErrorCodes.IndexBuildAlreadyInProgress, ErrorCodes.DatabaseDifferCase],
ErrorCodes.DatabaseDifferCase);
else
assertWorkedHandleTxnErrors(res, ErrorCodes.IndexBuildAlreadyInProgress);
return res;
},
checkWriteResult: function checkWriteResult(mayFailWithDatabaseDifferCase, res) {
if (mayFailWithDatabaseDifferCase && res.hasWriteError())
assertAlways.writeErrorWithCode(res, ErrorCodes.DatabaseDifferCase);
else
assertAlways.commandWorked(res);
return res;
}
};
let states = {
init: function init(db, collName) {
let uniqueNr = this.tid;
let semiUniqueNr = Math.floor(uniqueNr / 2);
// The semiUniqueDBName may clash and result in a DatabaseDifferCas error on creation,
// while the uniqueDBName does not clash. The unique and created variables track this.
this.semiUniqueDBName =
(this.tid % 2 ? 'create_database' : 'CREATE_DATABASE') + semiUniqueNr;
this.uniqueDBName = 'CreateDatabase' + uniqueNr;
this.myDB = db.getSiblingDB(this.uniqueDBName);
this.created = false;
this.unique = true;
},
useSemiUniqueDBName: function useSemiUniqueDBName(db, collName) {
this.myDB = db.getSiblingDB(this.semiUniqueDBName);
this.unique = false;
},
createView: function createView(db, collName) {
this.created =
this.checkCommandResult(!this.unique, this.myDB.createView(collName, "nil", [])).ok;
},
createCollection: function createCollection(db, collName) {
this.created =
this.checkCommandResult(!this.unique, this.myDB.createCollection(collName)).ok;
},
createIndex: function createIndex(db, collName) {
let background = Math.random > 0.5;
let res = this.myDB.getCollection(collName).createIndex({x: 1}, {background});
this.created |=
this.checkCommandResult(!this.unique, res).createdCollectionAutomatically;
},
insert: function insert(db, collName) {
this.created |= this.checkWriteResult(!this.created && !this.unique,
this.myDB.getCollection(collName).insert({x: 1}))
.nInserted == 1;
},
upsert: function upsert(db, collName) {
this.created |= this.checkWriteResult(!this.created && !this.unique,
this.myDB.getCollection(collName).update(
{x: 1}, {x: 2}, {upsert: 1}))
.nUpserted == 1;
},
drop: function drop(db, collName) {
if (this.created)
assertAlways(this.myDB.getCollection(collName).drop());
},
dropDatabase: function dropDatabase(db, collName) {
if (this.created)
assertAlways.commandWorked(this.myDB.dropDatabase());
},
listDatabases: function listDatabases(db, collName) {
for (let database of db.adminCommand({listDatabases: 1}).databases) {
let res = db.getSiblingDB(database.name).runCommand({listCollections: 1});
assertAlways.commandWorked(res);
assertAlways.neq(database.name, this.myDB.toString(), "this DB shouldn't exist");
}
},
listDatabasesNameOnly: function listDatabases(db, collName) {
for (let database of db.adminCommand({listDatabases: 1, nameOnly: 1}).databases) {
let res = db.getSiblingDB(database.name).runCommand({listCollections: 1});
assertAlways.commandWorked(res);
assertAlways.neq(database.name, this.myDB.toString(), "this DB shouldn't exist");
}
},
};
var transitions = {
init: {
useSemiUniqueDBName: 0.25,
createView: 0.25,
createCollection: 0.125,
createIndex: 0.125,
insert: 0.125,
upsert: 0.125
},
useSemiUniqueDBName: {createCollection: 0.75, createView: 0.25},
createView: {dropDatabase: 0.5, drop: 0.5},
createCollection: {dropDatabase: 0.25, createIndex: 0.25, insert: 0.25, upsert: 0.25},
createIndex: {insert: 0.25, upsert: 0.25, dropDatabase: 0.5},
insert: {dropDatabase: 0.2, drop: 0.05, insert: 0.5, upsert: 0.25},
upsert: {dropDatabase: 0.2, drop: 0.05, insert: 0.25, upsert: 0.5},
drop: {dropDatabase: 0.75, init: 0.25}, // OK to leave the empty database behind sometimes
dropDatabase: {init: 0.75, listDatabases: 0.15, listDatabasesNameOnly: 0.10},
listDatabases: {init: 0.75, listDatabases: 0.15, listDatabasesNameOnly: 0.10},
listDatabasesNameOnly: {init: 0.75, listDatabases: 0.10, listDatabasesNameOnly: 0.15},
};
return {
data,
// We only run a few iterations to reduce the amount of data cumulatively
// written to disk.
threadCount: 10,
iterations: 120,
states,
transitions,
};
})();
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