github-migrator

#!/bin/bash
# Script to create backup of github private/public repositories under organization and download as archives
# Requires curl command, github access token generated as Owner.
# Add organization, access token and username to below fields before proceeding.
# Run ./github-migrator --help for instructions.
# Avoid running --backup more than once to avoid multiple instances of backup on server side.
# v0.3

set -e
ORGANIZATION=""
GITHUB_USERNAME=""
GITHUB_ACCESS_TOKEN=""

backup_status() 
{
	> migration-status
	for url in `curl -s -H "Authorization: token $GITHUB_ACCESS_TOKEN" -H "Accept: application/vnd.github.v3+json" https://api.github.com/orgs/$ORGANIZATION/migrations | grep 'migrations' | grep -v archive_url | awk '{print $2}' | cut -d'"' -f2`; do
		echo $(curl -s -H "Authorization: token $GITHUB_ACCESS_TOKEN" -H "Accept: application/vnd.github.wyandotte-preview+json" $url | grep 'state\|full_name\|archive_url'| grep -v archive_format | awk '{print $2}' | cut -d'"' -f2) >> migration-status
	done
	cat migration-status
}

if [ "$1" = "--backup" ] || [ "$1" = "backup" ] && [ -n "$ORGANIZATION" ] && [ -n "$GITHUB_ACCESS_TOKEN" ] && [ -n "$GITHUB_USERNAME" ] ; then
			echo "Initiating backup for all repositories in $ORGANIZATION, you can run github-migrator --status to check backup status. Avoid running --backup more than once to avoid duplicates."
			for repo in `curl -s -H "Authorization: token $GITHUB_ACCESS_TOKEN" -H "Accept: application/vnd.github.v3+json" https://api.github.com/orgs/$ORGANIZATION/repos | grep '"full_name"' | awk '{print $2}' | cut -d'/' -f2 | cut -d'"' -f1`; do
			if [ -z $repo ]; then 
				echo "Backup could not be initiated. Please try again after checking dependencies." 
				exit 3
			else
				curl -s -H "Authorization: token $GITHUB_ACCESS_TOKEN" -X POST -H "Accept: application/vnd.github.wyandotte-preview+json" -d'{"lock_repositories":false,"repositories":["'$ORGANIZATION'/'$repo'"]}' https://api.github.com/orgs/$ORGANIZATION/migrations -o /dev/null  && echo "Backup initiated for $repo." || echo "Backup for $repo cannot be initiated."
			fi
			done
	elif [ "$1" = "--download" ] || [ "$1" = "download" ] && [ -n "$ORGANIZATION" ] && [ -n "$GITHUB_ACCESS_TOKEN" ] && [ -n "$GITHUB_USERNAME" ]; then
	 		backup_status >/dev/null 2>&1
			for url in `grep exported ./migration-status | awk '{print $3}'`; do
					for name in `grep $url ./migration-status | awk '{print $2}' | cut -d'/' -f2`; do 
						if [ ! -f ./migration_archive_$name.tar.gz ]; then
							echo "Downloading $name .."
							curl -s -H "Accept: application/vnd.github.wyandotte-preview+json" -u $GITHUB_USERNAME:$GITHUB_ACCESS_TOKEN -L -o ./migration_archive_$name.tar.gz $url
						else [ -f ./migration_archive_$name.tar.gz ]; echo "$name already downloaded. Nothing to do." 
						fi 
					done
			done
	elif [ "$1" = "--status" ] || [ "$1" = "status" ] && [ -n "$ORGANIZATION" ] && [ -n "$GITHUB_ACCESS_TOKEN" ] && [ -n "$GITHUB_USERNAME" ]; then backup_status	
	elif [ "$1" = "--delete" ] || [ "$1" = "status" ] && [ -n "$ORGANIZATION" ] && [ -n "$GITHUB_ACCESS_TOKEN" ] && [ -n "$GITHUB_USERNAME" ]; then
		echo "Deleting and cleaning up all backup archives from github.com. Repositories can still show exported but without archive urls while running --status."
		backup_status >/dev/null 2>&1
		for archive in `cat ./migration-status | awk '{print $3}'`; do
			curl -s -H "Authorization: token $GITHUB_ACCESS_TOKEN" -X DELETE -H "Accept: application/vnd.github.v3+json" $archive
		done
	elif [ "$1" = "--help" ] || [ "$1" = "help" ]; then
		echo "Instructions"
		echo "------------"
		echo "Requires curl command."
		echo "Before proceeding, edit this script and add Organization, Access Token (as owner) and Username."
		echo "Usage: ./github-migrator {backup, download, status, delete}"
		echo "Eg. ./github-migrator --status"
		echo "Avoid running --backup more than once to avoid duplicates."
	else 
		echo "Please run with one of the arguments and by adding Organization, Access Token (as owner) and Username. Check --help for more details."
fi