fenollp

How to self-upgrade/swap a running binary in Golang

You are writing a CLI client in Go and your users would love to be able to update this client seamlessly.

I'm talking replacing a currently running executable on UNIX platforms.

Using exec

// exa.go

fenollp

If your thinkpad T460 is somehow stuck in a reboot cycle 
* right after a storm
* even though your SSD / peripherals work fine on other laptops
* even after trying everything forums & youtube has to offer
* even after buying a non functional motherboard from Moldavia from [this guy](https://www.ebay.com/usr/goodwinflat)
* even after expecting that previous idea would work somehow
well then try disabling anything you can in your BIOS.
If you can't even get to BIOS you have bigger issues. Maybe power? Probably motherboard.

Turns out, for me, disabling the Intel Trusted execution things (TPM, TXT, ...) solved it!

fenollp

fenollp

bazel run --platform_suffix=_gpu \
	--copt=-fdiagnostics-color=always --run_under="cd $PWD && " \
	-c opt --copt -DMESA_EGL_NO_X11_HEADERS --copt -DEGL_NO_X11 \
	mediapipe/examples/facial_search/desktop:facial_search \
	-- \
	--calculator_graph_config_file=mediapipe/examples/facial_search/graphs/facial_search.pbtxt \
	--images_folder_path=mediapipe/examples/facial_search/images/

fenollp

bazel run --platform_suffix=_cpu \
	--copt=-fdiagnostics-color=always --run_under="cd $PWD && " \
	-c opt --define MEDIAPIPE_DISABLE_GPU=1 \
	mediapipe/examples/facial_search/desktop:facial_search \
	-- \
	--calculator_graph_config_file=mediapipe/examples/facial_search/graphs/facial_search.pbtxt \
	--images_folder_path=mediapipe/examples/facial_search/images/

fenollp

grep --version && uname -v
# grep (BSD grep) 2.5.1-FreeBSD
# Darwin Kernel Version 19.4.0: Wed Mar  4 22:28:40 PST 2020; root:xnu-6153.101.6~15/RELEASE_X86_64

grep -A1 -E "urls = \[" */WORKSPACE
# example_http_archive_locked/WORKSPACE:    urls = [
# example_http_archive_locked/WORKSPACE-        "https://github.com/bazelbuild/bazel-skylib/releases/download/0.8.0/bazel-skylib.0.8.0.tar.gz",

#but:
grep -m1 -A1 -E "urls = \[" */WORKSPACE

fenollp

defmodule CapitalizeHeaderKeys do
  def hook(status, headers, body, req) do
    headers = capitalize_resp_headers(headers)
    {:ok, req} = :cowboy_req.reply(status, headers, body, req)
    req
  end

  # Cowboy v1
  defp capitalize_resp_headers(headers) when is_list(headers) do
    :lists.keymap(&:cowboy_bstr.capitalize_token/1, 1, headers)

fenollp

package main
import "fmt"
import "bytes"

func (* bytes.Buffer) Eh() string {
	return "yay"
}

func main() {
	fmt.Println("hey!")

fenollp

Writing a single common CLI for all/most CI/CD providers

Let's do this!

Usability requirements

1. multiplatform + installation --> use Golang or Rust
2. easy for others to PR/MR --> Golang then
3. useful exit codes
4. lots of streaming things (at least logs. at least of least a "streamed" travis show)

fenollp

0 voidstar.git conan (20.2) ∀ ./dockcross bash -c 'mkdir build && cd build && conan install --build -- .. && cmake -DCMAKE_BUILD_TYPE=Release .. && cmake --build .'
Auto detecting your dev setup to initialize the default profile (/home/pete/.conan/profiles/default)
CC and CXX: /usr/src/mxe/usr/bin/x86_64-w64-mingw32.static-gcc, /usr/src/mxe/usr/bin/x86_64-w64-mingw32.static-g++ 
Found gcc 5.4
Default settings
	os=Linux
	arch=x86_64
	compiler=gcc
	compiler.version=5.4
	compiler.libcxx=libstdc++