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/**
* This tests tries to check that a ReplicaSetMonitor initialized with a
* replica set seed that has none of the nodes up will be able to recover
* once the replica set come back up.
*
* ReplSetMonitor is tested indirectly through mongos. This is because
* attempting to create a connection through the Mongo constructor won't
* work because the shell will throw an exception before the mongo shell
* binds the variable properly to the js environment (in simple terms,
* the connection object is never returned when it cannot connect to it).
* Another reason for using mongos in this test is so we can use
* connPoolStats to synchronize the test and make sure that the monitor
* was able to refresh before proceeding to check.
*/
var rsOpt = { oplogSize: 10 };
var st = new ShardingTest({ shards: 1, rs: rsOpt });
var mongos = st.s;
var replTest = st.rs0;
var adminDB = mongos.getDB('admin');
//adminDB.runCommand({ addShard: replTest.getURL() });
adminDB.runCommand({ enableSharding: 'test' });
adminDB.runCommand({ shardCollection: 'test.user', key: { x: 1 }});
/* The cluster now has the shard information. Then kill the replica set so
* when mongos restarts and tries to create a ReplSetMonitor for that shard,
* it will not be able to connect to any of the seed servers.
*/
replTest.stopSet();
st.restartMongos(0);
mongos = st.s; // refresh mongos with the new one
var coll = mongos.getDB('test').user;
var verifyInsert = function() {
var beforeCount = coll.find().count();
coll.insert({ x: 1 });
coll.getDB().getLastError();
var afterCount = coll.find().count();
assert.eq(beforeCount + 1, afterCount);
};
jsTest.log('Insert to a downed replSet');
assert.throws(verifyInsert);
replTest.startSet({ oplogSize: 10 });
replTest.initiate();
replTest.awaitSecondaryNodes();
jsTest.log('Insert to an online replSet');
// Verify that the replSetMonitor can reach the restarted set.
ReplSetTest.awaitRSClientHosts(mongos, replTest.nodes, { ok: true });
verifyInsert();
st.stop();
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