92 lines
3.6 KiB
JavaScript
92 lines
3.6 KiB
JavaScript
// Confirms that the dbStats command returns expected content.
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(function() {
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"use strict";
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function serverIsMongos() {
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const res = db.runCommand("ismaster");
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assert.commandWorked(res);
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return res.msg === "isdbgrid";
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}
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const isMongoS = serverIsMongos();
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const isMMAPv1 = jsTest.options().storageEngine === "mmapv1";
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let testDB = db.getSiblingDB("dbstats_js");
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assert.commandWorked(testDB.dropDatabase());
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let coll = testDB["testColl"];
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assert.commandWorked(coll.createIndex({x: 1}));
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const doc = {_id: 1, x: 1};
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assert.writeOK(coll.insert(doc));
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let dbStats = testDB.runCommand({dbStats: 1});
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assert.commandWorked(dbStats);
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if (isMMAPv1) {
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if (isMongoS) {
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// When this test is run against mongoS with the mmapV1 storage engine the 'objects' and
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// 'indexes' counts will vary depending on whether 'testColl' is sharded and on the # of
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// shards (due to inclusion of system.indexes & system.namespaces counts).
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assert(dbStats.hasOwnProperty("objects"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("indexes"), tojson(dbStats));
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} else {
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assert.eq(7,
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dbStats.objects,
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tojson(dbStats)); // Includes testColl, system.indexes & system.namespaces
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assert.eq(2, dbStats.indexes, tojson(dbStats));
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}
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// 'dataSize' and 'avgObjSize' include document padding space under MMAPv1.
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assert(dbStats.hasOwnProperty("dataSize"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("avgObjSize"), tojson(dbStats));
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} else {
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assert.eq(1, dbStats.objects, tojson(dbStats)); // Includes testColl only
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const dataSize = Object.bsonsize(doc);
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assert.eq(dataSize, dbStats.avgObjSize, tojson(dbStats));
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assert.eq(dataSize, dbStats.dataSize, tojson(dbStats));
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// Index count will vary on mongoS if an additional index is needed to support sharding.
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if (isMongoS) {
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assert(dbStats.hasOwnProperty("indexes"), tojson(dbStats));
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} else {
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assert.eq(2, dbStats.indexes, tojson(dbStats));
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}
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}
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assert(dbStats.hasOwnProperty("storageSize"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("numExtents"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("indexSize"), tojson(dbStats));
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// Confirm extentFreeList field existence. Displayed for mongoD running MMAPv1 and for mongoS
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// regardless of storage engine.
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if (isMMAPv1 || isMongoS) {
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assert(dbStats.hasOwnProperty("extentFreeList"), tojson(dbStats));
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assert(dbStats.extentFreeList.hasOwnProperty("num"), tojson(dbStats));
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assert(dbStats.extentFreeList.hasOwnProperty("totalSize"), tojson(dbStats));
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}
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// Confirm collection and view counts on mongoD
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if (!isMongoS) {
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assert.eq(testDB.getName(), dbStats.db, tojson(dbStats));
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// We wait to add a view until this point as it allows more exact testing of avgObjSize for
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// WiredTiger above. Having more than 1 document would require floating point comparison.
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assert.commandWorked(testDB.createView("testView", "testColl", []));
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dbStats = testDB.runCommand({dbStats: 1});
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assert.commandWorked(dbStats);
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if (isMMAPv1) {
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assert.eq(
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4,
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dbStats.collections,
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tojson(dbStats)); // testColl + system.views + system.indexes + system.namespaces
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} else {
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assert.eq(2, dbStats.collections, tojson(dbStats)); // testColl + system.views
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}
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assert.eq(1, dbStats.views, tojson(dbStats));
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}
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})();
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