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'use strict';
/**
* view_catalog_direct_system_writes.js
*
* Extends 'view_catalog.js' in concurrently creating, modifying and dropping view namespaces, but
* does so via direct writes to system.views instead of using the collMod or drop commands. Each
* worker operates on their own view, built on a shared underlying collection.
*/
load('jstests/concurrency/fsm_libs/extend_workload.js'); // for extendWorkload
load('jstests/concurrency/fsm_workloads/view_catalog.js'); // for $config
var $config = extendWorkload($config, function($config, $super) {
$config.states.create = function create(db, collName) {
this.counter++;
let pipeline = [{$match: {_id: this.counter}}];
assertAlways.commandWorked(db.system.views.insert({
_id: db.getName() + "." + this.threadViewName,
viewOn: this.threadCollName,
pipeline: pipeline
}));
this.confirmViewDefinition(db, this.threadViewName, collName, pipeline, this.counter);
};
$config.states.drop = function drop(db, collName) {
assertAlways.commandWorked(
db.system.views.deleteOne({_id: db.getName() + "." + this.threadViewName}));
let res = db.runCommand({listCollections: 1, filter: {name: this.threadViewName}});
assertAlways.commandWorked(res);
assertAlways.eq(0, res.cursor.firstBatch.length, tojson(res));
};
// Unfortunately we cannot perform an update in the place of a collMod since the update would
// contain a $-prefixed field (the $match from the pipeline, and so would be rejected by the
// update system. This is okay, the drop override below is enough to reproduce the issue seen in
// SERVER-37283. Because of this, we modify the transitions to favor going to drop more often.
$config.transitions = {
init: {create: 1},
create: {modify: 0.5, drop: 0.5},
modify: {modify: 0.3, drop: 0.7},
drop: {create: 1}
};
return $config;
});
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