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'use strict';
/*
* yield_geo_near.js (extends yield.js)
*
* Intersperse geo $near queries with updates and deletes of documents they may match.
*/
load('jstests/concurrency/fsm_libs/extend_workload.js'); // for extendWorkload
load('jstests/concurrency/fsm_workloads/yield.js'); // for $config
var $config = extendWorkload($config, function($config, $super) {
/*
* Use geo $near query to find points near the origin. Note this should be done using the
* geoNear command, rather than a $near query, as the $near query doesn't work in a sharded
* environment. Unfortunately this means we cannot batch the request.
*/
$config.states.query = function geoNear(db, collName) {
// This distance gets about 80 docs around the origin. There is one doc inserted
// every 1m^2 and the area scanned by a 5m radius is PI*(5m)^2 ~ 79.
var maxDistance = 5;
var res = db.runCommand({ geoNear: collName, near: [0, 0], maxDistance: maxDistance });
assertWhenOwnColl.commandWorked(res); // Could fail if more than 1 2d index.
assertWhenOwnColl(function verifyResults() {
var results = res.results;
var prevDoc = { dis: 0 }; // distance should never be less than 0
for (var i = 0; i < results.length; i++) {
var doc = results[i];
assertAlways.lte(NumberInt(doc.dis), maxDistance); // satisfies query
assertAlways.lte(prevDoc.dis, doc.dis); // returned in the correct order
prevDoc = doc;
}
});
};
$config.data.genUpdateDoc = function genUpdateDoc() {
var P = Math.floor(Math.sqrt(this.nDocs));
// Move the point to another location within the PxP grid.
var newX = Random.randInt(P) - P/2;
var newY = Random.randInt(P) - P/2;
return { $set: { geo: [newX, newY] } };
};
$config.data.getIndexSpec = function getIndexSpec() {
return { geo: '2d' };
};
$config.data.getReplaceSpec = function getReplaceSpec(i, coords) {
return { _id: i, geo: coords };
};
/*
* Insert some docs in geo form and make a 2d index.
*/
$config.setup = function setup(db, collName, cluster) {
$super.setup.apply(this, arguments);
var P = Math.floor(Math.sqrt(this.nDocs));
var i = 0;
// Set up some points to query (in a PxP grid around 0,0).
var bulk = db[collName].initializeUnorderedBulkOp();
for (var x = 0; x < P; x++) {
for (var y = 0; y < P; y++) {
var coords = [x - P/2, y - P/2];
bulk.find({ _id: i }).upsert().replaceOne(this.getReplaceSpec(i, coords));
i++;
}
}
assertAlways.writeOK(bulk.execute());
assertAlways.commandWorked(db[collName].ensureIndex(this.getIndexSpec()));
};
return $config;
});
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