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// Validate that write blocking mode prevents reaping of user, but not system, TTL indexes
// @tags: [
// creates_and_authenticates_user,
// requires_auth,
// requires_fcv_60,
// requires_non_retryable_commands,
// requires_replication,
// ]
(function() {
"use strict";
load("jstests/libs/fail_point_util.js");
// Test on replset primary
const rst = new ReplSetTest({
nodes: 1,
nodeOptions: {
setParameter: {
"ttlMonitorSleepSecs": 1,
}
}
});
rst.startSet();
rst.initiate();
const primary = rst.getPrimary();
function runTest(conn, testCase) {
const admin = conn.getDB("admin");
// Make sure the TTLMonitor is disabled, while not holding any global locks
const pauseTtl = configureFailPoint(primary, 'hangTTLMonitorBetweenPasses');
pauseTtl.wait();
function runTTLMonitor() {
const ttlPass = admin.serverStatus().metrics.ttl.passes;
assert.commandWorked(
admin.runCommand({configureFailPoint: "hangTTLMonitorBetweenPasses", mode: {skip: 1}}));
assert.soon(() => admin.serverStatus().metrics.ttl.passes >= ttlPass + 1,
"TTL monitor didn't run before timing out.");
}
// Set up data and TTL indexes
for (const target of testCase) {
target.db = conn.getDB(target.dbname);
target.col = target.db.getCollection(target.colName);
target.col.insertOne({"createdAt": new Date(), "logEvent": 2, "logMessage": "Success!"});
assert.commandWorked(target.col.createIndex({"createdAt": 1}, {expireAfterSeconds: 0}));
}
// Enable global write block mode
assert.commandWorked(admin.runCommand({setUserWriteBlockMode: 1, global: true}));
for (const target of testCase) {
assert.eq(1, target.col.count());
}
// Run the TTLMonitor, and expect user collections to remain unreaped
runTTLMonitor();
for (const target of testCase) {
if (target.expectReap) {
assert.eq(0, target.col.count());
} else {
assert.eq(1, target.col.count());
checkLog.containsJson(conn, 5400703, {
"error": {
"code": ErrorCodes.UserWritesBlocked,
"codeName": "UserWritesBlocked",
"errmsg": "User writes blocked"
}
});
}
}
// Disable write blocking, then run the TTLMonitor, expecting it to reap all collections
assert.commandWorked(admin.runCommand({setUserWriteBlockMode: 1, global: false}));
runTTLMonitor();
for (const target of testCase) {
// All documents should be reaped now
assert.soon(() => target.col.count() == 0);
// Finally, cleanup the collection
if (target.colName != "system.js") {
assert(target.col.drop());
}
}
}
runTest(primary, [
// Collections in a regular database should not be reaped
{dbname: "db", colName: "user_write_blocking_ttl_index", expectReap: false},
// Not even system collections in a regular database should be reaped
{dbname: "db2", colName: "system.js", expectReap: false},
// Collections in system databases should be reaped
{dbname: "admin", colName: "user_write_blocking_ttl_index", expectReap: true},
{dbname: "config", colName: "user_write_blocking_ttl_index", expectReap: true},
{dbname: "local", colName: "user_write_blocking_ttl_index", expectReap: true}
]);
rst.stopSet();
})();
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