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// come up with random priorities and make sure that the right member gets
// elected. then kill that member and make sure the next one gets elected.
(function() {
"use strict";
// Skip this test if running with --nojournal and WiredTiger.
if (jsTest.options().noJournal &&
(!jsTest.options().storageEngine || jsTest.options().storageEngine === "wiredTiger")) {
print("Skipping test because running WiredTiger without journaling isn't a valid" +
" replica set configuration");
return;
}
load("jstests/replsets/rslib.js");
var rs = new ReplSetTest({name: 'testSet', nodes: 3, nodeOptions: {verbose: 2}});
var nodes = rs.startSet();
rs.initiate();
var master = rs.getPrimary();
var everyoneOkSoon = function() {
var status;
assert.soon(function() {
var ok = true;
status = master.adminCommand({replSetGetStatus: 1});
if (!status.members) {
return false;
}
for (var i in status.members) {
if (status.members[i].health == 0) {
continue;
}
ok &= status.members[i].state == 1 || status.members[i].state == 2;
}
return ok;
}, tojson(status));
};
var checkPrimaryIs = function(node) {
print("nreplsets_priority1.js checkPrimaryIs(" + node.host + ")");
var status;
assert.soon(function() {
var ok = true;
try {
status = master.adminCommand({replSetGetStatus: 1});
} catch (e) {
print(e);
print("nreplsets_priority1.js checkPrimaryIs reconnecting");
reconnect(master);
status = master.adminCommand({replSetGetStatus: 1});
}
var str = "goal: " + node.host + "==1 states: ";
if (!status || !status.members) {
return false;
}
status.members.forEach(function(m) {
str += m.name + ": " + m.state + " ";
if (m.name == node.host) {
ok &= m.state == 1;
} else {
ok &= m.state != 1 || (m.state == 1 && m.health == 0);
}
});
print();
print(str);
print();
occasionally(function() {
print("\nstatus:");
printjson(status);
print();
}, 15);
return ok;
}, node.host + '==1', 240000, 1000);
everyoneOkSoon();
};
everyoneOkSoon();
print("\n\nreplsets_priority1.js initial sync");
// intial sync
master.getDB("foo").bar.insert({x: 1});
rs.awaitReplication();
print("\n\nreplsets_priority1.js starting loop");
var n = 5;
for (var i = 0; i < n; i++) {
print("Round " + i + ": FIGHT!");
var max = null;
var second = null;
reconnect(master);
var config = master.getDB("local").system.replset.findOne();
var version = config.version;
config.version++;
for (var j = 0; j < config.members.length; j++) {
var priority = Math.random() * 100;
print("random priority : " + priority);
config.members[j].priority = priority;
if (!max || priority > max.priority) {
max = config.members[j];
}
}
for (var j = 0; j < config.members.length; j++) {
if (config.members[j] == max) {
continue;
}
if (!second || config.members[j].priority > second.priority) {
second = config.members[j];
}
}
print("\n\nreplsets_priority1.js max is " + max.host + " with priority " + max.priority +
", reconfiguring...");
var count = 0;
while (config.version != version && count < 100) {
reconnect(master);
occasionally(function() {
print("version is " + version + ", trying to update to " + config.version);
});
try {
master.adminCommand({replSetReconfig: config});
master = rs.getPrimary();
reconnect(master);
version = master.getDB("local").system.replset.findOne().version;
} catch (e) {
print("nreplsets_priority1.js Caught exception: " + e);
}
count++;
}
print("\nreplsets_priority1.js wait for 2 slaves");
assert.soon(function() {
rs.getPrimary();
return rs._slaves.length == 2;
}, "2 slaves");
print("\nreplsets_priority1.js wait for new config version " + config.version);
assert.soon(function() {
var versions = [0, 0];
rs._slaves[0].setSlaveOk();
versions[0] = rs._slaves[0].getDB("local").system.replset.findOne().version;
rs._slaves[1].setSlaveOk();
versions[1] = rs._slaves[1].getDB("local").system.replset.findOne().version;
return versions[0] == config.version && versions[1] == config.version;
});
print("replsets_priority1.js awaitReplication");
// the reconfiguration needs to be replicated! the hb sends it out
// separately from the repl
rs.awaitReplication();
print("reconfigured. Checking statuses.");
checkPrimaryIs(max);
// Wait for election oplog entry to be replicated, to avoid rollbacks later on.
rs.awaitReplication();
print("rs.stop");
rs.stop(max._id);
master = rs.getPrimary();
print("\nkilled max primary. Checking statuses.");
print("second is " + second.host + " with priority " + second.priority);
checkPrimaryIs(second);
// Wait for election oplog entry to be replicated, to avoid rollbacks later on.
let liveSlaves = rs.nodes.filter(function(node) {
return node.host !== max.host && node.host !== second.host;
});
rs.awaitReplication(null, null, liveSlaves);
print("restart max " + max._id);
rs.restart(max._id);
master = rs.getPrimary();
print("max restarted. Checking statuses.");
checkPrimaryIs(max);
// Wait for election oplog entry to be replicated, to avoid rollbacks later on.
rs.awaitReplication();
}
rs.stopSet();
})();
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