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// Test that interrupting a count returns an error code.
//
// @tags: [
// # This test attempts to perform a count command and find it using the currentOp command. The
// # former operation may be routed to a secondary in the replica set, whereas the latter must be
// # routed to the primary.
// assumes_read_preference_unchanged,
// # The aggregation stage $currentOp cannot run with a readConcern other than 'local'
// assumes_read_concern_unchanged,
// does_not_support_stepdowns,
// does_not_support_repeated_reads,
// # Uses $where operator
// requires_scripting,
// uses_multiple_connections,
// uses_parallel_shell,
// ]
(function() {
"use strict";
var coll = db.count10;
coll.drop();
var bulk = coll.initializeUnorderedBulkOp();
for (var i = 0; i < 100; i++) {
coll.insertOne({x: i});
}
assert.commandWorked(bulk.execute());
// Start a parallel shell which repeatedly checks for a count
// query using db.currentOp(). As soon as the op is found,
// kill it via db.killOp().
var s = startParallelShell(function() {
assert.soon(function() {
var currentCountOps =
db.getSiblingDB("admin")
.aggregate([
{$currentOp: {}},
{
$match:
{"ns": db.count10.getFullName(), "command.count": db.count10.getName()}
},
{$limit: 1}
])
.toArray();
// Check that we found the count op. If not, return false so
// that assert.soon will retry.
if (currentCountOps.length !== 1) {
jsTest.log("Still didn't find count operation in the currentOp log.");
return false;
}
var countOp = currentCountOps[0];
jsTest.log("Found count op:");
printjson(countOp);
// Found the count op. Try to kill it.
assert.commandWorked(db.killOp(countOp.opid));
return true;
}, "Could not find count op after retrying, gave up");
});
var res = assert.throws(function() {
coll.find("sleep(1000)").count();
}, [], "Count op completed without being killed");
jsTest.log("Killed count output start");
printjson(res);
jsTest.log("Killed count output end");
assert(res.message.match(/count failed/) !== null);
assert(res.message.match(/\"code\"/) !== null);
s();
})();
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