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// Test that slaveOk is implicitly allowed for queries on a secondary with a read preference other
// than 'primary', and that queries which do have 'primary' read preference fail.
(function() {
"use strict";
const readPrefs =
[undefined, "primary", "secondary", "primaryPreferred", "secondaryPreferred", "nearest"];
const rst = new ReplSetTest({nodes: 3});
rst.startSet();
const nodes = rst.nodeList();
rst.initiate({
_id: jsTestName(),
members: [
{_id: 0, host: nodes[0]},
{_id: 1, host: nodes[1], priority: 0},
{_id: 2, host: nodes[2], arbiterOnly: true}
]
});
const priDB = rst.getPrimary().getDB(jsTestName());
assert(priDB.dropDatabase());
assert.commandWorked(priDB.test.insert({a: 1}, {writeConcern: {w: "majority"}}));
const secDB = rst.getSecondary().getDB(jsTestName());
for (let readMode of["commands", "legacy"]) {
for (let readPref of readPrefs) {
for (let slaveOk of[true, false]) {
const testType = {readMode: readMode, readPref: readPref, slaveOk: slaveOk};
secDB.getMongo().forceReadMode(readMode);
secDB.getMongo().setSlaveOk(slaveOk);
const cursor =
(readPref ? secDB.test.find().readPref(readPref) : secDB.test.find());
if (readPref === "primary" || (!readPref && !slaveOk)) {
// Attempting to run the query throws an error of type NotMasterNoSlaveOk.
const slaveOkErr = assert.throws(() => cursor.itcount(), [], tojson(testType));
assert.commandFailedWithCode(slaveOkErr, ErrorCodes.NotMasterNoSlaveOk);
} else {
// Succeeds for all non-primary readPrefs, and for no readPref iff slaveOk.
const docCount =
assert.doesNotThrow(() => cursor.itcount(), [], tojson(testType));
assert.eq(docCount, 1);
}
}
}
}
rst.stopSet();
})();
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