mongodb/jstests/hooks/run_initial_sync_node_validation.js

// Runner that runs full validation on all collections of the initial sync node and checks the
// dbhashes of all of the nodes including the initial sync node.
'use strict';

(function() {
    var startTime = Date.now();

    var primaryInfo = db.isMaster();
    assert(primaryInfo.ismaster,
           'shell is not connected to the primary node: ' + tojson(primaryInfo));

    var cmdLineOpts = db.adminCommand('getCmdLineOpts');
    assert.commandWorked(cmdLineOpts);
    var isMasterSlave = cmdLineOpts.parsed.master === true;
    assert(!isMasterSlave, 'Master/Slave is not supported with initial sync hooks');

    // The initial sync hooks only work for replica sets.
    var rst = new ReplSetTest(db.getMongo().host);

    // Call getPrimary to populate rst with information about the nodes.
    var primary = rst.getPrimary();
    assert(primary, 'calling getPrimary() failed');

    // Find the hidden node.
    var hiddenNode;
    for (var secondary of rst.liveNodes.slaves) {
        var isMasterRes = secondary.getDB('admin').isMaster();
        if (isMasterRes.hidden) {
            hiddenNode = secondary;
            break;
        }
    }

    assert(hiddenNode, 'No hidden initial sync node was found in the replica set');

    // Confirm that the hidden node is in SECONDARY state.
    var res = assert.commandWorked(hiddenNode.adminCommand({replSetGetStatus: 1}));
    assert.eq(res.myState, ReplSetTest.State.SECONDARY, tojson(res));

    load('jstests/hooks/run_validate_collections.js');

    load('jstests/hooks/check_repl_dbhash.js');  // For checkDBHashes
    checkDBHashes(rst);

    var totalTime = Date.now() - startTime;
    print('Finished consistency checks of initial sync node in ' + totalTime + ' ms.');
})();