Auto-update internal library dependecies for microservices in a Python monorepo, w/Poetry.

run.sh

#!/usr/bin/env bash

# Check for file changes in internal libraries local to a monorepo, increment
# the lib's minor version number, and auto-update them before running the
# current project/service's dev app/server. Assumes usage of poetry's 
# pyproject.toml and a repository structure similar to that described in this
# Opendoor article: https://medium.com/opendoor-labs/our-python-monorepo-d34028f2b6fa

REPONAME=myproject
LIBSPATH=~/dev/$REPONAME/lib
# declare -a EXTENSIONS=(
#     "*.py"
#     "*.toml"
# )

# Find all internal libs in pyproject.toml and append to an array.
# Adjust pathing for your local/internal lib directory.
declare -a LIBRARIES=()
LIBS_STRING=$(grep -F "../../lib/" pyproject.toml | sed 's/ .*//')
while read -r line; do
    LIBRARIES+=("$line")
done <<< "$LIBS_STRING"

# check for any code changes in any internal libs and update them
for lib in "${LIBRARIES[@]}"
do
    echo "Checking for changes in $lib ..."
    LIBPATH=$LIBSPATH/$lib
    shasum -s -q -c $LIBPATH/.checksum
    exitcode=$?
    if [ $exitcode -ne 0 ] || [ ! -f $LIBPATH/.checksum ]; then
        # increment the final version number, i.e. 0.1.20 becomes 0.1.21
        perl -i -pe 's/\bversion = "[^"]*\K\b(\d+)(?=[^"]*")/$1+1/e' $LIBPATH/pyproject.toml
        # TODO: search array of extensions, exclude unecessary ones
        find $LIBPATH/ -type f \( -iname \*.py -o -iname \*.toml \) ! -path '*.venv/*' -exec shasum {} \; > $LIBPATH/.checksum
        poetry update $lib
    fi
done

# execute local dev app or service
uvicorn apiserver:app --reload