mongodb/jstests/replsets/no_chaining.js

load("jstests/replsets/rslib.js");

function myprint(x) {
    print("chaining output: " + x);
}

var replTest = new ReplSetTest({name: 'testSet', nodes: 3, useBridge: true});
var nodes = replTest.startSet();
var hostnames = replTest.nodeList();
replTest.initiate({
    "_id": "testSet",
    "members": [
        {"_id": 0, "host": hostnames[0], priority: 2},
        {"_id": 1, "host": hostnames[1], priority: 0},
        {"_id": 2, "host": hostnames[2], priority: 0}
    ],
    "settings": {"chainingAllowed": false}
});

var master = replTest.getPrimary();
replTest.awaitReplication();

var breakNetwork = function() {
    nodes[0].disconnect(nodes[2]);
    master = replTest.getPrimary();
};

var checkNoChaining = function() {
    master.getDB("test").foo.insert({x: 1});

    assert.soon(function() {
        return nodes[1].getDB("test").foo.findOne() != null;
    });

    var endTime = (new Date()).getTime() + 10000;
    while ((new Date()).getTime() < endTime) {
        assert(nodes[2].getDB("test").foo.findOne() == null, 'Check that 2 does not catch up');
    }
};

var forceSync = function() {
    syncFrom(nodes[2], nodes[1], replTest);
    assert.soon(function() {
        return nodes[2].getDB("test").foo.findOne() != null;
    }, 'Check for data after force sync');
};

// SERVER-12922
//
if (!_isWindows()) {
    print("break the network so that node 2 cannot replicate");
    breakNetwork();

    print("make sure chaining is not happening");
    checkNoChaining();

    print("check that forcing sync target still works");
    forceSync();

    var config = master.getDB("local").system.replset.findOne();
    assert.eq(false, config.settings.chainingAllowed, tojson(config));
}

replTest.stopSet();