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// Test that secondaryOk 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 readPref of readPrefs) {
for (let secondaryOk of [true, false]) {
const testType = {readPref: readPref, secondaryOk: secondaryOk};
secDB.getMongo().setSecondaryOk(secondaryOk);
const cursor = (readPref ? secDB.test.find().readPref(readPref) : secDB.test.find());
if (readPref === "primary" || (!readPref && !secondaryOk)) {
// Attempting to run the query throws an error of type NotPrimaryNoSecondaryOk.
const secondaryOkErr = assert.throws(() => cursor.itcount(), [], tojson(testType));
assert.commandFailedWithCode(secondaryOkErr, ErrorCodes.NotPrimaryNoSecondaryOk);
} else {
// Succeeds for all non-primary readPrefs, and for no readPref iff secondaryOk.
const docCount = assert.doesNotThrow(() => cursor.itcount(), [], tojson(testType));
assert.eq(docCount, 1);
}
}
}
function assertNotPrimaryNoSecondaryOk(func) {
secDB.getMongo().setSecondaryOk(false);
secDB.getMongo().setReadPref("primary");
const res = assert.throws(func);
assert.commandFailedWithCode(res, ErrorCodes.NotPrimaryNoSecondaryOk);
}
// Test that agg with $out/$merge and non-inline mapReduce fail with 'NotPrimaryNoSecondaryOk' when
// directed at a secondary with "primary" read preference.
const secondaryColl = secDB.secondaryok_read_pref;
assertNotPrimaryNoSecondaryOk(() => secondaryColl.aggregate([{$out: "target"}]).itcount());
assertNotPrimaryNoSecondaryOk(
() =>
secondaryColl
.aggregate([{$merge: {into: "target", whenMatched: "fail", whenNotMatched: "insert"}}])
.itcount());
assertNotPrimaryNoSecondaryOk(() => secondaryColl.mapReduce(() => emit(this.a),
(k, v) => Array.sum(b),
{out: {replace: "target"}}));
rst.stopSet();
})();
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