mirror of
https://github.com/kennethreitz/heroku-buildpack-python.git
synced 2026-06-05 23:10:16 +00:00
Noah Zoschke
95 lines
2.5 KiB
Bash
Executable File
95 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# bin/compile <build-dir> <cache-dir>
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set -eo pipefail
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BIN_DIR=$(cd $(dirname $0); pwd) # absolute path
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ROOT_DIR=$(dirname $BIN_DIR)
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BUILD_DIR=$1
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CACHE_DIR=$2
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NAME=$($BIN_DIR/detect $BUILD_DIR)
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PIP_DOWNLOAD_CACHE=${PIP_DOWNLOAD_CACHE:-$CACHE_DIR/pip_downloads}
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VIRTUALENV_DIRS="bin include lib"
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indent() {
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RE="s/^/ /"
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[ $(uname) == "Darwin" ] && sed -l "$RE" || sed -u "$RE"
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}
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virtualenv() {
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python - "$@" <<EOF
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import sys
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sys.path.insert(0, "$ROOT_DIR/src/virtualenv-1.6.4")
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import virtualenv
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virtualenv.main()
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EOF
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}
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cd $BUILD_DIR
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# reject a non-packaged Django app
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if [ "$NAME" = "Python" ]; then
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[ -f manage.py ] && [ -f settings.py ] && { echo " ! Django app must be in a package subdirectory"; exit 1; }
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fi
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# copy artifacts out of cache if exists
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mkdir -p $CACHE_DIR
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for dir in $VIRTUALENV_DIRS; do
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cp -R $CACHE_DIR/$dir . &> /dev/null || true
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done
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echo "-----> Preparing virtualenv version $(virtualenv --version)"
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virtualenv --no-site-packages . | indent
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# if Django, append settings
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if [ "$NAME" = "Python/Django" ]; then
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echo "-----> Django settings injection"
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SETTINGS_FILE=$(ls **/settings.py | head -1)
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PROJECT=$(dirname $SETTINGS_FILE)
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echo "Injecting code into $SETTINGS_FILE to read from DATABASE_URL" | indent
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cat >>$SETTINGS_FILE <<EOF
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import os, sys, urlparse
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urlparse.uses_netloc.append('postgres')
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urlparse.uses_netloc.append('mysql')
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try:
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if os.environ.has_key('DATABASE_URL'):
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url = urlparse.urlparse(os.environ['DATABASE_URL'])
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DATABASES['default'] = {
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'NAME': url.path[1:],
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'USER': url.username,
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'PASSWORD': url.password,
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'HOST': url.hostname,
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'PORT': url.port,
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}
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if url.scheme == 'postgres':
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DATABASES['default']['ENGINE'] = 'django.db.backends.postgresql_psycopg2'
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if url.scheme == 'mysql':
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DATABASES['default']['ENGINE'] = 'django.db.backends.mysql'
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except:
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print "Unexpected error:", sys.exc_info()
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EOF
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fi
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echo "-----> Installing dependencies using pip version $(bin/pip --version | awk '{print $2}')"
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PIP_DOWNLOAD_CACHE=$PIP_DOWNLOAD_CACHE bin/pip install --use-mirrors -r requirements.txt | indent
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set +e
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OUT=$(virtualenv --relocatable .)
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[ $? -ne 0 ] && {
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echo " ! Error making virtualenv relocatable"
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echo "$OUT" | indent
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exit 1
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}
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set -e
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# store new artifacts in cache
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for dir in $VIRTUALENV_DIRS; do
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rm -rf $CACHE_DIR/$dir
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cp -R $dir $CACHE_DIR/
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done
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