106 lines
4.2 KiB
JavaScript
106 lines
4.2 KiB
JavaScript
// Confirms that the dbStats command returns expected content.
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//
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// @tags: [
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// # Asserts on the total number of indexes in dbStats.
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// assumes_no_implicit_index_creation,
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// requires_dbstats,
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// requires_fcv_53,
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// # The `dbstats` command builds in-memory structures that are not causally consistent.
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// does_not_support_causal_consistency,
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// ]
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import {
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ClusteredCollectionUtil
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} from "jstests/libs/clustered_collections/clustered_collection_util.js";
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function serverIsMongos() {
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const res = db.runCommand("hello");
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assert.commandWorked(res);
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return res.msg === "isdbgrid";
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}
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function serverUsingPersistentStorage() {
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const res = db.runCommand("serverStatus");
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assert.commandWorked(res);
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return res.storageEngine.persistent === true;
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}
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const isMongoS = serverIsMongos();
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const isUsingPersistentStorage = !isMongoS && serverUsingPersistentStorage();
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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 = {
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_id: 1,
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x: 1
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};
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assert.commandWorked(coll.insert(doc));
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let dbStats = testDB.runCommand({dbStats: 1, freeStorage: 1});
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assert.commandWorked(dbStats);
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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 if (ClusteredCollectionUtil.areAllCollectionsClustered(db.getMongo())) {
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// A clustered collection has no actual index on _id.
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assert.eq(1, dbStats.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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assert(dbStats.hasOwnProperty("storageSize"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("totalSize"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("indexSize"), tojson(dbStats));
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if (isUsingPersistentStorage) {
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assert(dbStats.hasOwnProperty("freeStorageSize"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("indexFreeStorageSize"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("totalFreeStorageSize"), tojson(dbStats));
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assert.eq(dbStats.freeStorageSize + dbStats.indexFreeStorageSize, dbStats.totalFreeStorageSize);
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assert(dbStats.hasOwnProperty("fsUsedSize"), tojson(dbStats));
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assert(dbStats.hasOwnProperty("fsTotalSize"), tojson(dbStats));
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// Make sure free storage size is not included by default
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const defaultStats = testDB.runCommand({dbStats: 1});
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assert.commandWorked(defaultStats);
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assert(!defaultStats.hasOwnProperty("freeStorageSize"), tojson(defaultStats));
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assert(!defaultStats.hasOwnProperty("indexFreeStorageSize"), tojson(defaultStats));
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assert(!defaultStats.hasOwnProperty("totalFreeStorageSize"), tojson(defaultStats));
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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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assert.eq(2, dbStats.collections, tojson(dbStats)); // testColl + system.views
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assert.eq(1, dbStats.views, tojson(dbStats));
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}
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// Check that the output for non-existing database and the output for empty database
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// have the same fields.
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const testEmptyAndNonExistingDB = db.getSiblingDB(jsTestName() + "_non_existing_and_empty");
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testEmptyAndNonExistingDB.dropDatabase();
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const statsNonExistingDB = testEmptyAndNonExistingDB.runCommand({dbStats: 1, freeStorage: 1});
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testEmptyAndNonExistingDB.runCommand({create: "test_empty_collection"});
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const statsEmptyDB = testEmptyAndNonExistingDB.runCommand({dbStats: 1, freeStorage: 1});
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assert.sameMembers(Object.keys(statsNonExistingDB),
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Object.keys(statsEmptyDB),
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"dbStats for non-existing and empty dbs should return the same fields"); |