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if [ -z "$MONGO_DB" ]; then
echo "MONGO_DB environment variable not specified"
exit 1
fi
if [ -z "$MONGO_DB_USER" ]; then
echo "MONGO_DB_USER environment variable not specified"
exit 1
fi
if [ -z "$MONGO_DB_PASSWORD" ]; then
echo "MONGO_DB_PASSWORD environment variable not specified"
exit 1
fi
MONGO_COMMAND="mongo $MONGO_DB -h $MONGO_DB_HOST --port $MONGO_DB_PORT -u $MONGO_DB_USERNAME -p $MONGO_DB_PASSWORD --authenticationDatabase $MONGO_DB"
until eval $MONGO_COMMAND --eval 'db.getCollectionNames();' ; do
echo "MongoDB is unavailable - sleeping"
sleep 1
done
echo "MongoDB available"
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