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57 lines
2.5 KiB
JavaScript
57 lines
2.5 KiB
JavaScript
// Contains helpers for checking the featureCompatibilityVersion and constants for the current
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// featureCompatibilityVersion values.
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/**
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* These constants represent the current "latest" and "last-stable" values for the
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* featureCompatibilityVersion parameter. They should only be used for testing of upgrade-downgrade
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* scenarios that are intended to be maintained between releases.
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*
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* We cannot use `const` when declaring them because it must be possible to load() this file
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* multiple times.
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*/
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var latestFCV = "4.2";
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var lastStableFCV = "4.0";
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/**
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* Checks the featureCompatibilityVersion document and server parameter. The
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* featureCompatibilityVersion document is of the form {_id: "featureCompatibilityVersion", version:
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* <required>, targetVersion: <optional>}. The getParameter result is of the form
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* {featureCompatibilityVersion: {version: <required>, targetVersion: <optional>}, ok: 1}.
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*/
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function checkFCV(adminDB, version, targetVersion) {
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let res = adminDB.runCommand({getParameter: 1, featureCompatibilityVersion: 1});
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assert.commandWorked(res);
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assert.eq(res.featureCompatibilityVersion.version, version, tojson(res));
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assert.eq(res.featureCompatibilityVersion.targetVersion, targetVersion, tojson(res));
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let doc = adminDB.system.version.findOne({_id: "featureCompatibilityVersion"});
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assert.eq(doc.version, version, tojson(doc));
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assert.eq(doc.targetVersion, targetVersion, tojson(doc));
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}
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/**
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* Since SERVER-29453 disallowed removal of the FCV document, we need to do this hack to remove it.
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*/
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function removeFCVDocument(adminDB) {
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let res = adminDB.runCommand({listCollections: 1, filter: {name: "system.version"}});
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assert.commandWorked(res, "failed to list collections");
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let originalUUID = res.cursor.firstBatch[0].info.uuid;
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let newUUID = UUID();
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// Create new collection with no FCV document, and then delete the
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// original collection.
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let createNewAdminSystemVersionCollection =
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{op: "c", ns: "admin.$cmd", ui: newUUID, o: {create: "system.version"}};
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let dropOriginalAdminSystemVersionCollection =
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{op: "c", ns: "admin.$cmd", ui: originalUUID, o: {drop: "admin.tmp_system_version"}};
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assert.commandWorked(adminDB.runCommand({
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applyOps:
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[createNewAdminSystemVersionCollection, dropOriginalAdminSystemVersionCollection]
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}));
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res = adminDB.runCommand({listCollections: 1, filter: {name: "system.version"}});
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assert.commandWorked(res, "failed to list collections");
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assert.eq(newUUID, res.cursor.firstBatch[0].info.uuid);
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}
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