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load("jstests/libs/parallelTester.js");
/**
* @tags: [requires_sharding]
*/
(function() {
"use strict";
const st = new ShardingTest({mongos: 1, shards: 1, rs: {nodes: 2, protocolVersion: 1}});
const kDbName = 'test';
const mongosClient = st.s;
const mongos = mongosClient.getDB(kDbName);
const rst = st.rs0;
const primary = rst.getPrimary();
const secondary = rst.getSecondaries()[0];
const cfg = primary.getDB('local').system.replset.findOne();
const allHosts = cfg.members.map(x => x.host);
const primaryOnly = [primary.name];
const secondaryOnly = [secondary.name];
function configureReplSetFailpoint(name, modeValue) {
st.rs0.nodes.forEach(function(node) {
assert.commandWorked(node.getDB("admin").runCommand({
configureFailPoint: name,
mode: modeValue,
data: {shouldCheckForInterrupt: true},
}));
});
}
var threads = [];
function launchFinds({times, readPref, shouldFail}) {
jsTestLog("Starting " + times + " connections");
for (var i = 0; i < times; i++) {
var thread = new Thread(function(connStr, readPref, dbName, shouldFail) {
var client = new Mongo(connStr);
const ret = client.getDB(dbName).runCommand(
{find: "test", limit: 1, "$readPreference": {mode: readPref}});
if (shouldFail) {
assert.commandFailed(ret);
} else {
assert.commandWorked(ret);
}
}, st.s.host, readPref, kDbName, shouldFail);
thread.start();
threads.push(thread);
}
}
function updateSetParameters(params) {
var cmd = Object.assign({"setParameter": 1}, params);
assert.commandWorked(mongos.adminCommand(cmd));
}
function dropConnections() {
assert.commandWorked(mongos.adminCommand({dropConnections: 1, hostAndPort: allHosts}));
}
var currentCheckNum = 0;
function hasConnPoolStats(args) {
const checkNum = currentCheckNum++;
jsTestLog("Check #" + checkNum + ": " + tojson(args));
var {ready, pending, active, hosts, isAbsent} = args;
ready = ready ? ready : 0;
pending = pending ? pending : 0;
active = active ? active : 0;
hosts = hosts ? hosts : allHosts;
function checkStats(res, host) {
var stats = res.hosts[host];
if (!stats) {
jsTestLog("Connection stats for " + host + " are absent");
return isAbsent;
}
jsTestLog("Connection stats for " + host + ": " + tojson(stats));
return stats.available == ready && stats.refreshing == pending && stats.inUse == active;
}
function checkAllStats() {
var res = mongos.adminCommand({connPoolStats: 1});
return hosts.map(host => checkStats(res, host)).every(x => x);
}
assert.soon(checkAllStats, "Check #" + checkNum + " failed", 10000);
jsTestLog("Check #" + checkNum + " successful");
}
function checkConnPoolStats() {
const ret = mongos.runCommand({"connPoolStats": 1});
const poolStats = ret["pools"]["NetworkInterfaceTL-TaskExecutorPool-0"];
jsTestLog(poolStats);
}
function walkThroughBehavior({primaryFollows, secondaryFollows}) {
// Start pooling with a ping
mongos.adminCommand({multicast: {ping: 0}});
checkConnPoolStats();
// Block connections from finishing
configureReplSetFailpoint("waitInFindBeforeMakingBatch", "alwaysOn");
// Launch a bunch of primary finds
launchFinds({times: 10, readPref: "primary"});
// Confirm we follow
hasConnPoolStats({active: 10, hosts: primaryOnly});
if (secondaryFollows) {
hasConnPoolStats({ready: 10, hosts: secondaryOnly});
}
checkConnPoolStats();
// Launch a bunch of secondary finds
launchFinds({times: 20, readPref: "secondary"});
// Confirm we follow
hasConnPoolStats({active: 20, hosts: secondaryOnly});
if (primaryFollows) {
hasConnPoolStats({ready: 10, active: 10, hosts: primaryOnly});
}
checkConnPoolStats();
configureReplSetFailpoint("waitInFindBeforeMakingBatch", "off");
dropConnections();
}
assert.commandWorked(mongos.test.insert({x: 1}));
assert.commandWorked(mongos.test.insert({x: 2}));
assert.commandWorked(mongos.test.insert({x: 3}));
st.rs0.awaitReplication();
jsTestLog("Following disabled");
walkThroughBehavior({primaryFollows: false, secondaryFollows: false});
jsTestLog("Following primary node");
updateSetParameters({ShardingTaskExecutorPoolReplicaSetMatching: "matchPrimaryNode"});
walkThroughBehavior({primaryFollows: false, secondaryFollows: true});
// jsTestLog("Following busiest node");
// updateSetParameters({ShardingTaskExecutorPoolReplicaSetMatching: "matchBusiestNode"});
// walkThroughBehavior({primaryFollows: true, secondaryFollows: true});
jsTestLog("Reseting to disabled");
updateSetParameters({ShardingTaskExecutorPoolReplicaSetMatching: "disabled"});
walkThroughBehavior({primaryFollows: false, secondaryFollows: false});
threads.forEach(function(thread) {
thread.join();
});
st.stop();
})();
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