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Category: Coding

Laravel 9: avoid to use `Storage::exists()`

Published by crossRT on May 7, 2022

I use Storage facades to manage my Laravel application files and folder a lot, either on server storage or S3 compatible storage like DigitalOcean Spaces.

Recently I have a new microservice project kicked start and using Laravel 9, and I use the Storage facades as same as I did in previous projects.

So this time I need to use Storage::exists() to check if a file exists in a huge size of DigitalOcean Spaces (around 300GB). But the speed is pretty slow, sometimes it takes 3 seconds, but sometimes it can take more than 10 seconds for a single file check.

This problem happened quite randomly because I use the same method to check in my old projects running with other Laravel versions doesn’t have such a problem. Even if I use another S3 client also couldn’t reproduce the slowness, thus I decided to dig in and see what was going on.

End up I found this in FilesystemAdapter.php:

This leads me to the driver League\Flysystem\Filesystem , and I can see the implementation of has() function like the following:

And YES. This explains why the checking of a single file takes longer than expected.

Workaround

Use Storage::disk('s3')->fileExists($path) to check the file directly.

It avoids the calling to directoryExists($path) , which probably causes slowness on a huge side S3 storage.

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Containerize old PHP/Laravel application with Apache and SSL

Published by crossRT on July 21, 2021

Recently I migrated my websites and some applications from 7 years old server to a new server. Then I just realize some PHP application is not working on the latest PHP 7.4, thus I have to create a simple docker container to run the app.

Specifically, it’s Invoice Ninja v3.4.1.
This application was running on my server for more than 5 years.
Because I’m too lazy to upgrade to the latest version manually, so I think letting it run in a container with a specific PHP version will be good enough for me.

Following is my Dockerfile:

# use any php version as u need
FROM php:7.0.33-apache

# install any php extension as u need
RUN docker-php-ext-install pdo_mysql mysql

# install ssl-cert for generate self-signed cert
RUN apt-get update && apt-get install -y ssl-cert

# enable apache2 mod
RUN a2enmod rewrite
RUN a2enmod ssl

# simple virtualhost definition
RUN echo '\n\
<VirtualHost *:443>\n\
  <Directory /srv>\n\
    Options Indexes FollowSymLinks\n\
    AllowOverride All\n\
    Require all granted\n\
  </Directory>\n\
  DocumentRoot /srv/public \n\
  SSLEngine on \n\
  SSLCertificateFile  /etc/ssl/certs/ssl-cert-snakeoil.pem \n\
  SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key \n\
</VirtualHost>\n'\
> /etc/apache2/sites-available/000-default.conf

WORKDIR /srv

CMD ["apache2-foreground"]

With this Dockerfile:
1. install PHP extension to run the applications.
2. it has a self-signed certificate to enable simple SSL.
3. it allows us to mount any kind of PHP application and use it immediately.

To run the application with this Dockerfile:
1. Put the Dockerfile in your application root directory.

2. Build the image:
docker build -t YOUR-APPLICATION-IMAGE:custom .

3. Run the container with the image and mount the application directory to container’s /srv:
docker run --rm --name CONTAINER_NAME -v /path/to/your/application YOUR-APPLICATION-IMAGE:custom

That’s all~
With this trick, you should be able to run any web applications that require PHP version less than 7.4

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Install PHP Xdebug on M1 Macbook Pro

Published by crossRT on June 27, 2021

Installing Xdebug on M1 MacBook Pro can be very tricky due to the CPU architecture changed.

This post will show how I install it on my machine:

  1. Make sure you install ur PHP through brew. For me, I have PHP v7.4.15 and perl v5.30.2 installed
  2. Install Xdebug with perl:
    arch -arm64 sudo pecl uninstall xdebug
  3. Locate the Xdebug path in your system. For me, it’s installed on /opt/homebrew/Cellar/[email protected]/7.4.15_1/pecl/20190902/xdebug.so
  4. Make sure xdebug.so is loaded correctly in php.ini. You can check the following block.
zend_extension="/opt/homebrew/Cellar/[email protected]/7.4.15_1/pecl/20190902/xdebug.so"
xdebug.mode=debug
xdebug.client_host=localhost
xdebug.client_port=9000

DONE~
You may start using Xdebug to debug ur PHP application. =)

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Upgrade PHP 5.5 to 7.0 on Ubuntu 14.04

Published by crossRT on December 12, 2015

PHP 7.0 just released 2 weeks ago, and it has good reviews about performance improved a lot. So I would like to give it a try, upgrading my Ubuntu 14.04 VPS on DigitalOcean to this latest PHP version.  Here is my upgrade snippet.

My VPS details before upgrade:
  • Ubuntu 14.04
  • PHP 5.5.9
  • nginx 1.4.6
  • phpmyadmin installed
Steps
  1. Add the repository 
    add-apt-repository ppa:ondrej/php-7.0
  2. Update 
    apt-get update
  3. You can check installed php5-* packages with this command, for better understanding before remove them. 
    dpkg --get-selections | grep php
  4. Remove all php5-* packages 
    apt-get purge php5-*
apt-get --purge autoremove
  5. Install php7.0 packages. Some might not necessary, depends on your requirement. 
    apt-get install php7.0-fpm php7.0-mysql php7.0-cli php7.0-common php7.0-json php7.0-opcache
  6. After everything installed properly, you will need to update your web server configuration. For me, I need to modify fastcgi_pass directive in Nginx config file to something like this: 
    fastcgi_pass unix:/run/php/php7.0-fpm.sock;

    This is because the location of socket file has changed in php7.

  7. Restart your nginx and php7.0-fpm 
    service nginx restart
service php7.0-fpm restart
Notes:
  • Run all commands with sudo or your root account.
  • phpMyAdmin will be removed during the steps above. Because it requires some php5 packages.
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Setup SFTP for a user to access restricted folder only on Ubuntu 14.04

Published by crossRT on April 15, 2015

Today I need to give my friend access to my server, so he can edit any files in that folder. My server is running OpenSSH and SFTP is enabled by default, actually I can create a new Linux user for him to access with SFTP. But I just want he accessing to the folder I gave him, so here I modify OpenSSH configuration to fit my need.

System details:

  • Ubuntu 14.04
  • Running OpenSSH

Steps:

  1. Add a group called sftp. 
    sudo addgroup sftp
  2. Add new user with default home path, assign to sftp group and disable shell access. 
    sudo useradd -m -g sftp -s /bin/false username
  3. Give a new password for the user. 
    sudo passwd username
  4. Change home directory’s user and group to root. 
    sudo chown root:root /home/username
  5. Change home directory’s permission 
    sudo chmod 755 /home/username
  6. Go into the folder 
    cd /home/username
  7. Create a new folder named www. 
    sudo mkdir www
  8. Change www folder’s user and group to username. 
    sudo chown username:username www
  9. This step is the core. Edit to /etc/ssh/sshd_config with the editor you used to. 
    sudo nano /etc/ssh/sshd_config
  10. Add following lines to the end of  /etc/ssh/sshd_config. 
    Match group sftp
	ChrootDirectory %h
	X11Forwarding no
	AllowTcpForwarding no
	ForceCommand internal-sftp
	# PasswordAuthentication yes

    Enable PasswordAuthentication by uncomment it if you enabled PubkeyAuthentication for other users in sshd_config.

  11. Restart ssh service. Done. 
    sudo /etc/init.d/ssh restart

 

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