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load("jstests/replsets/rslib.js");
doTest = function( signal ) {
var name = "slaveDelay";
var host = getHostName();
var replTest = new ReplSetTest( {name: name, nodes: 3} );
var nodes = replTest.startSet();
/* set slaveDelay to 30 seconds */
var config = replTest.getReplSetConfig();
config.members[2].priority = 0;
config.members[2].slaveDelay = 30;
replTest.initiate(config);
var master = replTest.getPrimary().getDB(name);
var slaveConns = replTest.liveNodes.slaves;
var slaves = [];
for (var i in slaveConns) {
var d = slaveConns[i].getDB(name);
slaves.push(d);
}
waitForAllMembers(master);
// insert a record
assert.writeOK(master.foo.insert({ x: 1 }, { writeConcern: { w: 2 }}));
var doc = master.foo.findOne();
assert.eq(doc.x, 1);
// make sure slave has it
var doc = slaves[0].foo.findOne();
assert.eq(doc.x, 1);
// make sure delayed slave doesn't have it
for (var i=0; i<8; i++) {
assert.eq(slaves[1].foo.findOne(), null);
sleep(1000);
}
// within 30 seconds delayed slave should have it
assert.soon(function() {
var z = slaves[1].foo.findOne();
return z && z.x == 1;
});
/************* Part 2 *******************/
// how about if we add a new server? will it sync correctly?
conn = replTest.add();
config = master.getSisterDB("local").system.replset.findOne();
printjson(config);
config.version++;
config.members.push({_id: 3,
host: host+":"+replTest.ports[replTest.ports.length-1],
priority:0,
slaveDelay:30});
master = reconfig(replTest, config);
master = master.getSisterDB(name);
// wait for the node to catch up
replTest.awaitReplication(90*1000);
assert.writeOK(master.foo.insert({ _id: 123, x: 'foo' }, { writeConcern: { w: 2 }}));
for (var i=0; i<8; i++) {
assert.eq(conn.getDB(name).foo.findOne({_id:123}), null);
sleep(1000);
}
assert.soon(function() {
var z = conn.getDB(name).foo.findOne({_id:123});
return z != null && z.x == "foo";
});
/************* Part 3 ******************/
print("reconfigure slavedelay");
config.version++;
config.members[3].slaveDelay = 15;
reconfig(replTest, config);
master = replTest.getPrimary().getDB(name);
assert.soon(function() {
return conn.getDB("local").system.replset.findOne().version == config.version;
});
// wait for node to become secondary
assert.soon(function() {
var result = conn.getDB("admin").isMaster();
printjson(result);
return result.secondary;
});
print("testing insert");
master.foo.insert({_id : 124, "x" : "foo"});
assert(master.foo.findOne({_id:124}) != null);
for (var i=0; i<10; i++) {
assert.eq(conn.getDB(name).foo.findOne({_id:124}), null);
sleep(1000);
}
// the node should have the document in 15 seconds (20 for some safety against races)
assert.soon(function() {
return conn.getDB(name).foo.findOne({_id:124}) != null;
}, 10*1000);
replTest.stopSet();
};
doTest(15);
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