83 lines
2.9 KiB
Swift
83 lines
2.9 KiB
Swift
// Copyright 2024 The NATS Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import Foundation
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import Nats
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let nats = NatsClientOptions().urls([URL(string: "nats://localhost:4222")!]).build()
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print("Connecting...")
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try! await nats.connect()
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print("Connected!")
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let data = "foo".data(using: .utf8)!
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// Warmup
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print("Warming up...")
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for _ in 0..<10_000 {
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try! await nats.publish(data, subject: "foo")
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}
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print("Starting benchmark...")
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let now = DispatchTime.now()
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let numMsgs = 1_000_000
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let sub = try await nats.subscribe(subject: "foo")
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try await withThrowingTaskGroup(of: Void.self) { group in
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group.addTask {
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var hm = NatsHeaderMap()
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hm.append(try! NatsHeaderName("foo"), NatsHeaderValue("bar"))
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hm.append(try! NatsHeaderName("foo"), NatsHeaderValue("baz"))
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hm.insert(try! NatsHeaderName("another"), NatsHeaderValue("one"))
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var i = 0
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for try await msg in sub {
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let payload = msg.payload!
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if String(data: payload, encoding: .utf8) != "\(i)" {
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let emptyString = ""
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print(
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"invalid payload; expected: \(i); got: \(String(data: payload, encoding: .utf8) ?? emptyString)"
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)
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}
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guard let headers = msg.headers else {
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print("empty headers!")
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continue
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}
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if headers != hm {
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print("invalid headers; expected: \(hm); got: \(headers)")
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}
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if i % 1000 == 0 {
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print("received \(i) msgs")
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}
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i += 1
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}
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}
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group.addTask {
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var hm = NatsHeaderMap()
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hm.append(try! NatsHeaderName("foo"), NatsHeaderValue("bar"))
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hm.append(try! NatsHeaderName("foo"), NatsHeaderValue("baz"))
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hm.insert(try! NatsHeaderName("another"), NatsHeaderValue("one"))
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for i in 0..<numMsgs {
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try await nats.publish("\(i)".data(using: .utf8)!, subject: "foo", headers: hm)
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if i % 1000 == 0 {
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print("published \(i) msgs")
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}
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}
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}
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// Wait for all tasks in the group to complete
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try await group.waitForAll()
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}
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try! await nats.flush()
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let elapsed = DispatchTime.now().uptimeNanoseconds - now.uptimeNanoseconds
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let msgsPerSec: Double = Double(numMsgs) / (Double(elapsed) / 1_000_000_000)
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print("Elapsed: \(elapsed / 1_000_000)ms")
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print("\(msgsPerSec) msgs/s")
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