index.js

/*
Copyright 2019 Jonah Snider

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.
*/

const logProcessErrors = require("log-process-errors");
logProcessErrors();

require("dotenv").config();

require("sqreen");

const logger = require("./util/logger").scope("shard manager");
const { ShardingManager } = require("kurasuta");
const DiceClient = require("./structures/DiceClient");
const packageData = require("../package");
const config = require("./config");
const sentry = require("@sentry/node");
const { join } = require("path");
const stripWebhookURL = require("./util/stripWebhookURL");
const { WebhookClient } = require("discord.js");

logger.note(`Node.js version: ${process.version}`);
logger.note(`Dice version v${packageData.version}`);

if (config.sentryDSN) {
  sentry.init({
    dsn: config.sentryDSN,
    release: packageData.version,
    environment: process.env.NODE_ENV || "development"
  });
}

if (process.env.GOOGLE_APPLICATION_CREDENTIALS) {
  const debugAgent = require("@google-cloud/debug-agent");

  debugAgent.start({
    projectId: "dice-discord",
    keyFilename: join(__dirname, "..", "googleCloudServiceAccount.json"),
    serviceContext: {
      service: "bot",
      version: packageData.version
    }
  });
}

if (process.env.NODE_ENV === "production") {
  const profiler = require("@google-cloud/profiler");

  if (process.env.GOOGLE_APPLICATION_CREDENTIALS) {
    logger.note("Using Stackdriver");
    profiler.start({
      projectID: "dice-discord",
      serviceContext: {
        service: "bot",
        version: packageData.version
      }
    });
  } else {
    logger.debug("No Google Cloud environment variable was found, not using Stackdriver");
  }
} else {
  logger.debug("Not in production, not using Stackdriver");
}

const sharder = new ShardingManager(join(__dirname, "dice"), {
  token: config.discordToken,
  respawn: process.env.NODE_ENV === "production",
  development: process.env.NODE_ENV === "development",
  client: DiceClient,
  clientOptions: {
    commandPrefix: config.commandPrefix,
    owner: config.owners,
    disableEveryone: true
  }
});

sharder.on("debug", logger.debug).on("ready", () => {
  logger.success("Clusters spawned");

  const webhookLogger = logger.scope("shard manager", "ready webhook");
  // Announce version being ready
  if (config.webhooks.updates && process.env.NODE_ENV === "production") {
    const webhookData = stripWebhookURL(config.webhooks.updates);
    const webhook = new WebhookClient(webhookData.id, webhookData.token);

    webhook
      .send({
        embeds: [
          {
            color: 0x4caf50,
            title: "Ready",
            fields: [
              {
                name: "Version",
                value: `v${packageData.version}`
              }
            ],
            timestamp: new Date()
          }
        ]
      })
      .then(() => webhookLogger.debug("Sent ready webhook"))
      .catch(webhookLogger.error);
  } else {
    webhookLogger.debug("Skipping sending ready webhook");
  }
});

sharder.spawn().catch(err => {
  logger.fatal("An error occurred when spawning clusters");
  logger.error(err);
});