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Fix bug that scripts may not be loaded correctly in pipeline #1107

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Apr 21, 2020
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9 changes: 7 additions & 2 deletions lib/pipeline.ts
Original file line number Diff line number Diff line change
Expand Up @@ -253,6 +253,7 @@ Pipeline.prototype.exec = function (callback: CallbackFunction) {

// Check whether scripts exists
const scripts = [];
const addedScriptHashes = {};
for (let i = 0; i < this._queue.length; ++i) {
const item = this._queue[i];
if (this.isCluster && item.isCustomCommand) {
Expand All @@ -267,10 +268,11 @@ Pipeline.prototype.exec = function (callback: CallbackFunction) {
continue;
}
const script = this._shaToScript[item.args[0]];
if (!script) {
if (!script || addedScriptHashes[script.sha]) {
continue;
}
scripts.push(script);
addedScriptHashes[script.sha] = true;
}

const _this = this;
Expand All @@ -279,7 +281,10 @@ Pipeline.prototype.exec = function (callback: CallbackFunction) {
}

return this.redis
.script("exists", Array.from(new Set(scripts.map(({ sha }) => sha))))
.script(
"exists",
scripts.map(({ sha }) => sha)
)
.then(function (results) {
const pending = [];
for (let i = 0; i < results.length; ++i) {
Expand Down
49 changes: 32 additions & 17 deletions test/functional/pipeline.ts
Original file line number Diff line number Diff line change
Expand Up @@ -267,41 +267,56 @@ describe("pipeline", function () {
it("should check and load uniq scripts only", function (done) {
const redis = new Redis();
redis.defineCommand("test", {
numberOfKeys: 1,
lua: "return {unpack(KEYS),unpack(ARGV)}",
numberOfKeys: 2,
lua: "return {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}",
});
redis.defineCommand("echo", {
numberOfKeys: 1,
lua: "return {KEYS[1],ARGV[1]}",
});

redis.once("ready", function () {
const expectedComands = [
"script",
"script",
"script",
"evalsha",
"evalsha",
"evalsha",
"evalsha",
const expectedCommands = [
["script", "exists"],
["script", "load", "return {KEYS[1],ARGV[1]}"],
["script", "load", "return {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}"],
["evalsha"],
["evalsha"],
["evalsha"],
["evalsha"],
["evalsha"],
["evalsha"],
];
const expectedResults = [
[null, ["a", "1"]],
[null, ["b", "2"]],
[null, ["k1", "k2", "v1", "v2"]],
[null, ["k3", "k4", "v3", "v4"]],
[null, ["c", "3"]],
[null, ["k5", "k6", "v5", "v6"]],
];
redis.monitor(function (err, monitor) {
monitor.on("monitor", function (_, command) {
const name = expectedComands.shift();
expect(name).to.eql(command[0]);
if (!expectedComands.length) {
const expectedCommand = expectedCommands.shift();
expectedCommand.forEach((arg, i) => expect(arg).to.eql(command[i]));
if (!expectedCommands.length) {
monitor.disconnect();
redis.disconnect();
done();
}
});
const pipe = redis.pipeline();
pipe
.echo("f", "0")
.test("a", "1")
.echo("a", "1")
.echo("b", "2")
.test("b", "3")
.exec();
.test("k1", "k2", "v1", "v2")
.test("k3", "k4", "v3", "v4")
.echo("c", "3")
.test("k5", "k6", "v5", "v6")
.exec(function (err, results) {
expect(err).to.eql(null);
expect(results).to.eql(expectedResults);
});
});
});
});
Expand Down