c7fc3432cd
Provides an entry point that builds and returns a combined LH + RH keyboard firmware when provided a keymap via a POST body. Wraps compilation with ccache, and includes a pre-warmed cache of the build in /tmp/ccache. To maximize chance of a direct cache hit, changes the lambda driver to always build in /tmp/build. some back of the envelope measurements (2012 xeon e3-1230v2, nixos) clean build, no cache -> 21.308 clean build, cache -> 7.145 modified keymap, clean build, cache -> 12.127
59 lines
1.4 KiB
Ruby
59 lines
1.4 KiB
Ruby
# frozen_string_literal: true
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require 'tmpdir'
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require 'json'
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require 'base64'
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class Compiler
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class CompileError < RuntimeError
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attr_reader :status, :log
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def initialize(message, status: 400, log:)
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super(message)
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@status = status
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@log = log
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end
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end
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def compile(keymap_data)
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in_build_dir do
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File.open('build.keymap', 'w') do |io|
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io.write(keymap_data)
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end
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compile_output = nil
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IO.popen(['compileZmk', './build.keymap'], err: [:child, :out]) do |io|
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compile_output = io.read
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end
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compile_output = compile_output.split("\n")
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unless $?.success?
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status = $?.exitstatus
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raise CompileError.new("Compile failed with exit status #{status}", log: compile_output)
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end
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unless File.exist?('zephyr/combined.uf2')
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raise CompileError.new('Compile failed to produce result binary', status: 500, log: compile_output)
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end
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result = File.read('zephyr/combined.uf2')
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[result, compile_output]
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end
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end
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# Lambda is single-process per container, and we get substantial speedups
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# from ccache by always building in the same path
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BUILD_DIR = '/tmp/build'
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def in_build_dir
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FileUtils.remove_entry(BUILD_DIR, true)
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Dir.mkdir(BUILD_DIR)
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Dir.chdir(BUILD_DIR)
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yield
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ensure
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FileUtils.remove_entry(BUILD_DIR, true) rescue nil
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end
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end
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