Failed to determine Chrome version

[Pro-Alchemist]

Hi, thanks a lot for creating and maintaing this lib.

I have recently faced an error, I am using chromic version{:chromic_pdf, "~> 1.16"} and using a remote chromium to print PDFs

In my runtime.exs for prod I have set

  config :my_app, ChromicPDF,
    on_demand: false,
    chrome_address: {
      System.get_env("CHROME_HOST"),
      System.get_env("CHROME_PORT", "9222") |> String.to_integer()
    },
    session_pool: [
      # in milliseconds
      timeout: 10_000_000,
      # number of concurrent sessions
      size: 4
    ]

On my local everything works, I am using local chromium.

Wwhen I try to print PDFs on the server it works fine when using ChromicPDF.print_to_pdf({:url, url}) however when I try to use the ChromicPDF.Template.source_and_options/1 it fails with an error regarding chrome version.

This code

  [
    content: html,
    size: :a4,
    header_height: 0.4166666667,
    footer_height: 0.3645833333
  ]
  |> ChromicPDF.Template.source_and_options()
  |> ChromicPDF.print_to_pdf(output: file_path)

Generates an error like

07:16:07.607 [error] Task #PID<0.4500.0> started from #PID<0.4499.0> terminating
** (RuntimeError) Failed to determine Chrome version.
If you're using a remote chrome instance, please configure ChromicPDF manually:
    config :chromic_pdf, chrome_version: "Google Chrome 120.0.6099.71"
Afterwards, force a recompilation with:
    mix deps.compile --force chromic_pdf
--- original exception --
** (RuntimeError) could not find executable from ["chromium-browser", "chromium", "google-chrome", "chrome", "chrome.exe", "/usr/bin/chromium-browser", "/usr/bin/chromium", "/usr/bin/google-chrome", "/Applications/Google Chrome.app/Contents/MacOS/Google Chrome", "/Applications/Chromium.app/Contents/MacOS/Chromium"]
    (chromic_pdf 1.16.0) lib/chromic_pdf/pdf/chrome_runner.ex:85: ChromicPDF.ChromeRunner.executable/1

Following this issue I tried adding the Chrome version in config.exs

config :my_app, ChromicPDF, chrome_version: "117.0.5938.62"

and redeployed but I faced the same error.

Any help and advice regarding this?

[maltoe]

Hi @Pro-Alchemist ,

the chrome_version option is actually a compile-time config, as opposed to the others, which are really init args to the supervision tree. Option is specified like this:

config :chromic_pdf,  chrome_version: "117.0.5938.62"

Make sure you recompile chromic_pdf afterwards; e.g. mix deps.compile --force chromic_pdf and purge your build caches if you cache _build on CI.

Sorry for the inconvenience. This compile-time config option isn't really ideal, maybe it would have been nicer to just add a :disable_zoom option to the functions in Template, but TBH I didn't expect so many people to use this "remote chrome" feature at all (and have never done so myself).