mhart’s gists

mhart / pdf2png-test.sh

Created December 1, 2020 16:48

	docker run -v "$HOME/.aws":/root/.aws \
	-e AWS_REGION=us-east-1 -e AWS_PROFILE=myprofile \
	-p 9000:8080 \
	pdf2png-test

mhart / test.Dockerfile

Created December 1, 2020 16:42

	FROM alpine:3.12 AS rie-image

	RUN apk add --no-cache curl && \
	cd / && \
	curl -sSL -O https://github.com/aws/aws-lambda-runtime-interface-emulator/releases/download/v1.0/aws-lambda-rie && \
	chmod +x /aws-lambda-rie


	FROM pdf2png

mhart / src-v2.Dockerfile

Created December 1, 2020 16:30

	FROM golang:1-alpine3.12 AS build-image

	WORKDIR /app

	COPY go.mod go.sum ./
	RUN go mod download

	COPY *.go ./
	RUN go build -tags lambda.norpc -ldflags="-s -w" main.go

mhart / src-main.go

Created December 1, 2020 16:26

	func main() {
	os.Chdir("/tmp") // Change working directory to /tmp so we can write files

	if len(os.Args) > 1 && os.Args[1] == "--test" {
	pdf2png()
	} else {
	lambda.Start(handler)
	}
	}

mhart / src-v1.Dockerfile

Created December 1, 2020 16:18

	FROM golang:1-alpine3.12 AS build-image

	WORKDIR /app

	COPY *.go ./
	RUN go build main.go


	FROM alpine:3.12

mhart / src-main.v1.go

Created December 1, 2020 16:14

	package main

	import (
	"os"
	"os/exec"
	"strings"
	)

	func main() {
	os.Chdir("/tmp") // Change working directory to /tmp so we can write files

mhart / test.sh

Last active February 13, 2020 18:31

AWS internal error creating a 200MiB Lambda Layer

	# Try to create a 200MiB layer
	head -c 209715200 /dev/random > file.dat
	rm -f layer.zip && zip layer.zip file.dat
	aws s3 cp layer.zip s3://my-bucket/my-key
	aws lambda publish-layer-version --cli-connect-timeout 0 --layer-name large-200MiB-dep --content S3Bucket=my-bucket,S3Key=my-key

	# Results in:
	# An error occurred (ServiceException) when calling the PublishLayerVersion operation (reached max retries: 2): An error occurred and the request cannot be processed.

	# One byte less and it works (`aws lambda publish-layer-version` takes about 60 secs)

mhart / plistToOpml.js

Last active October 13, 2019 02:18

Quick hack to convert from NetNewsWire 3.x to something you can import into 5.x

	// First, create a new directory, copy this file into it, and run: `npm install xml2js`
	// Then `plutil -convert xml1 ~/Library/Application\ Support/NetNewsWire/Subscriptions.plist`
	// Then `node plistToOpml.js > exported.opml`
	// Then File->Import Subscriptions... in NetNewsWire 5.x

	const fs = require('fs')
	const xml2js = require('xml2js')

	const data = fs.readFileSync(`${process.env.HOME}/Library/Application Support/NetNewsWire/Subscriptions.plist`, 'utf8')

mhart / ci.yml

Last active May 23, 2022 04:36

GitHub Actions running 5 tslint jobs in parallel (each tests every 5th file)

mhart / npm-ci.sh

Created September 28, 2019 18:26

Simple module caching script, for CI or similar

	#!/bin/bash -ex

	# Tries to download latest cached node_modules based on package-lock.json
	# If it can't, then `npm ci` and push up node_modules to cache

	# Assumes S3_BUCKET env var has been set, and that `aws` credentials
	# are configured (either in env, or ~/.aws/credentials)

	CHECKSUM=$(sha256sum package-lock.json \| awk '{print $1}')

Michael Hart mhart