Steps required to run delivery bot on a Raspberry Pi

[RossBaptie]

Hi - sorry for this as it's probably a stupid newbie question, but I am trying to set this up to help find delivery & pick up slots for several elderly and vulnerable people in our mutual aid group but i'm pretty clueless around all this.

I'm running this on a Raspberry Pi 3 - have done all the installation stuff and when I do

yarn start

I get this error message:-

Error: Failed to launch chrome! /home/pi/delivery-slot-bot/node_modules/puppeteer/.local-chromium/linux-686378/chrome-linux/chrome: 1: /home/pi/delivery-slot-bot/node_modules/puppeteer/.local-chromium/linux-686378/chrome-linux/chrome: Syntax error: Unterminated quoted string

Appreciate this is probably not specific to this bot but not really sure where else to ask for help

Any help would be greatly appreciated!

Thanks

[paulmaunders]

Can you try installing some prerequisites?

sudo apt-get install gconf-service libasound2 libatk1.0-0 libatk-bridge2.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libexpat1 libfontconfig1 libgcc1 libgconf-2-4 libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxss1 libxtst6 ca-certificates fonts-liberation libappindicator1 libnss3 lsb-release xdg-utils wget 

This ticket suggests using the Raspberry Pi's ARM built chromium rather than puppeteer's native Chrome.

sudo apt-get install chromium-browser

Then updating the code to use it by adding

const browser = await puppeteer.launch({ executablePath: 'chromium-browser' });

[RossBaptie]

Hi Paul - thank you for your help.

I did all these three steps, but now when I do 'yarn start' I get the following error mesage

pi@raspberrypi:~/delivery-slot-bot $ yarn start
yarn run v1.22.4
$ node ./src/index.js
/home/pi/delivery-slot-bot/src/index.js:1
const browser = await puppeteer.launch({ executablePath: 'chromium-browser' });
                ^^^^^

SyntaxError: await is only valid in async function
    at wrapSafe (internal/modules/cjs/loader.js:1070:16)
    at Module._compile (internal/modules/cjs/loader.js:1120:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1176:10)
    at Module.load (internal/modules/cjs/loader.js:1000:32)
    at Function.Module._load (internal/modules/cjs/loader.js:899:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
    at internal/main/run_main_module.js:18:47
error Command failed with exit code 1.

I appreciate I am out my depth here, but if there's anything obvious here any help would be greatly appreciate - thanks!

[paulmaunders]

I think the const browser = await puppeteer.launch({ executablePath: 'chromium-browser' }); code may be to replace the existing const browser = statement on line 14.

[RossBaptie]

Thanks Paul - I did that and now progressed to this error message now

ReferenceError: puppeteer is not defined
    at runStore (/home/pi/delivery-slot-bot/src/index.js:14:19)
    at run (/home/pi/delivery-slot-bot/src/index.js:50:11)
    at Object.handler (/home/pi/delivery-slot-bot/src/index.js:63:43)
    at Object.runCommand (/home/pi/delivery-slot-bot/node_modules/yargs/lib/command.js:240:40)
    at Object.parseArgs [as _parseArgs] (/home/pi/delivery-slot-bot/node_modules/yargs/yargs.js:1182:35)
    at Object.get [as argv] (/home/pi/delivery-slot-bot/node_modules/yargs/yargs.js:1088:21)
    at Object.<anonymous> (/home/pi/delivery-slot-bot/src/index.js:64:10)
    at Module._compile (internal/modules/cjs/loader.js:1156:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1176:10)
    at Module.load (internal/modules/cjs/loader.js:1000:32)
    at Function.Module._load (internal/modules/cjs/loader.js:899:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
    at internal/main/run_main_module.js:18:47
error Command failed with exit code 1.

[bkarakashev]

Thanks Paul - I did that and now progressed to this error message now

ReferenceError: puppeteer is not defined
    at runStore (/home/pi/delivery-slot-bot/src/index.js:14:19)
    at run (/home/pi/delivery-slot-bot/src/index.js:50:11)
    at Object.handler (/home/pi/delivery-slot-bot/src/index.js:63:43)
    at Object.runCommand (/home/pi/delivery-slot-bot/node_modules/yargs/lib/command.js:240:40)
    at Object.parseArgs [as _parseArgs] (/home/pi/delivery-slot-bot/node_modules/yargs/yargs.js:1182:35)
    at Object.get [as argv] (/home/pi/delivery-slot-bot/node_modules/yargs/yargs.js:1088:21)
    at Object.<anonymous> (/home/pi/delivery-slot-bot/src/index.js:64:10)
    at Module._compile (internal/modules/cjs/loader.js:1156:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1176:10)
    at Module.load (internal/modules/cjs/loader.js:1000:32)
    at Function.Module._load (internal/modules/cjs/loader.js:899:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:74:12)
    at internal/main/run_main_module.js:18:47
error Command failed with exit code 1.

I am also getting the same. Please help!

[bkarakashev]

Hi, @paulmaunders do u think u can help with the issue above with the "puppeteer is not defined". Thanks

[paulmaunders]

OK I've set it up on my own Raspberry Pi so I can test it properly and I managed to get it working. You need to make the following changes:

index a2b8760..8f33c35 100644
--- a/src/index.js
+++ b/src/index.js
@@ -11,7 +11,8 @@ const { handleSlots } = require("./slot-handler");
  * @param {Store} store
  */
 async function runStore(store) {
-  const browser = await getBrowser();
+  const browser = await getBrowser({ executablePath: 'chromium-browser' });
+
   const userAgent =
     config.raw.useragent ||
     (await browser.userAgent()).replace(/headless/i, "");
diff --git a/src/puppeteer-utils.js b/src/puppeteer-utils.js
index ff97243..9fdbfc6 100644
--- a/src/puppeteer-utils.js
+++ b/src/puppeteer-utils.js
@@ -4,13 +4,13 @@ const puppeteer = require("puppeteer");
 /** @typedef {import("puppeteer").Page} Page */
 /** @typedef {import("puppeteer").Response} Response */

-function getBrowser() {
+function getBrowser($args) {
   if (process.env.PUPPETEER_BROWSER_WS_ENDPOINT) {
     return puppeteer.connect({
       browserWSEndpoint: process.env.PUPPETEER_BROWSER_WS_ENDPOINT,
     });
   }
-  return puppeteer.launch();
+  return puppeteer.launch($args);
 }

 /**

@andytson could we add exectuablePath as an option in config.ini? e.g. so people can just uncomment it to get it working on Raspberry Pi?

[RossBaptie]

that's great - thanks very much Paul - works for me now!

[bkarakashev]

Excellent, thank you @paulmaunders it worked for me as well 🙂👍 It will be great as you suggested if this is a toggle in the config.ini file to enable or disable Raspberry Pi.

[paulmaunders]

@andytson would you mind tidying up the patch I provided as a config var?