xk6-nostr バッチ化・集約化されたクエリの負荷テスト用

batchedQuery.ts

/*
   Copyright 2023 Moyatani Shusui
   original code is made by akiomik
   https://github.com/akiomik/xk6-nostr

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

import nostr from 'k6/x/nostr';
import event from 'k6/x/nostr/event';
import { check, fail } from 'k6';

const relay = nostr.relayConnect("ws://127.0.0.1:8234");

function sample(as) {
  return as[Math.floor(Math.random() * as.length)];
}

function range(n) {
  return [...Array(n).keys()];
}

function sampleUniq(as, count) {
  const indicies = range(as.length);
  const result = [];
  range(Math.min(count, as.length)).forEach(() => {
    const index = Math.floor(Math.random() * indicies.length);
    indicies.splice(index, 1);
    result.push(as[index]);
  });
  return result;
}

function concat() {
  let result = [];
  for (const k in arguments) {
    result = result.concat(arguments[k]);
  }
  return result;
}

export function setup() {
  // 50人のユーザがいる
  const keys = range(50).map(() => {
    const sk = nostr.generatePrivateKey();
    const pk = nostr.getPublicKey(sk);
    return [sk, pk];
  });

  const notes = range(100).map(() => {
    const sk = sample(keys)[0];
    const now = Math.round(new Date().getTime() / 1000);
    return event.sign({ content: Math.random(), kind: 1, created_at: now }, sk);
  });

  const reactions = range(10000).map(() => {
    const sk = sample(keys)[0];
    const note = sample(notes).id;
    const now = Math.round(new Date().getTime() / 1000);
    return event.sign({
      content: Math.random(),
      kind: 7,
      tags: [['e', note, '']],
      created_at: now,
    }, sk);
  });

  const reactionsCount = {};
  reactions.forEach((reaction) => {
    const id = reaction.tags[0][1];
    const count = reactionsCount[id];
    reactionsCount[id] = count != null ? count + 1 : 0;
  })

  concat(notes, reactions).forEach((ev) => {
    relay.publish(ev);
  });

  return { keys, notes, reactionsCount };
}

function getCountForIds(ids, reactionsCount) {
  return ids.reduce((sum, id) => {
    const countForId = reactionsCount[id];
    return sum + (countForId != null ? countForId : 0);
  }, 0);
}

export default function ({ notes, reactionsCount }) {
  const ids = sampleUniq(notes, 20).map(note => note.id);
  relay.querySync({ kinds: [7], '#e': ids, limit: 100 });

  /*
  if (!check(result, {
    'length match': (r) => r.length == getCountForIds(ids, reactionsCount)
  })) fail('length didnt match: ' + result.length + ', expected: ' + getCountForIds(ids, reactionsCount));
  */
}

export function teardown() {
  relay.close();
}