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(function() {
"use strict";
var sessionsDb = "config";
var refresh = {refreshLogicalSessionCacheNow: 1};
var startSession = {startSession: 1};
// Create a cluster with 1 shard.
var cluster = new ShardingTest({shards: 2});
// Test that we can refresh without any sessions, as a sanity check.
{
assert.commandWorked(cluster.s.getDB(sessionsDb).runCommand(refresh));
assert.commandWorked(cluster.shard0.getDB(sessionsDb).runCommand(refresh));
assert.commandWorked(cluster.shard1.getDB(sessionsDb).runCommand(refresh));
}
// Test that refreshing on mongos flushes local records to the collection.
{
var mongos = cluster.s.getDB(sessionsDb);
var sessionCount = mongos.system.sessions.count();
// Start one session.
assert.commandWorked(mongos.runCommand(startSession));
assert.commandWorked(mongos.runCommand(refresh));
// Test that it landed in the collection.
assert.eq(mongos.system.sessions.count(),
sessionCount + 1,
"refresh on mongos did not flush session record");
}
// Test that refreshing on mongod flushes local records to the collection.
{
var mongos = cluster.s.getDB(sessionsDb);
var shard = cluster.shard0.getDB(sessionsDb);
var sessionCount = mongos.system.sessions.count();
assert.commandWorked(shard.runCommand(startSession));
assert.commandWorked(shard.runCommand(refresh));
// Test that the new record landed in the collection.
assert.eq(mongos.system.sessions.count(),
sessionCount + 1,
"refresh on mongod did not flush session record");
}
// Test that refreshing on all servers flushes all records.
{
var mongos = cluster.s.getDB(sessionsDb);
var shard0 = cluster.shard0.getDB(sessionsDb);
var shard1 = cluster.shard1.getDB(sessionsDb);
var sessionCount = mongos.system.sessions.count();
assert.commandWorked(mongos.runCommand(startSession));
assert.commandWorked(shard0.runCommand(startSession));
assert.commandWorked(shard1.runCommand(startSession));
// All records should be in local caches only.
assert.eq(mongos.system.sessions.count(),
sessionCount,
"startSession should not flush records to disk");
// Refresh on each server, see that it ups the session count.
assert.commandWorked(mongos.runCommand(refresh));
assert.eq(mongos.system.sessions.count(),
sessionCount + 1,
"refresh on mongos did not flush session records to disk");
assert.commandWorked(shard0.runCommand(refresh));
assert.eq(mongos.system.sessions.count(),
sessionCount + 2,
"refresh on shard did not flush session records to disk");
assert.commandWorked(shard1.runCommand(refresh));
assert.eq(mongos.system.sessions.count(),
sessionCount + 3,
"refresh on shard did not flush session records to disk");
}
})();
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