fabfile.py

from __future__ import with_statement
from fabric.api import local, env, settings, abort, run, cd
from fabric.contrib.console import confirm
import time

# Please create this directory on your production server
code_dir='/var/www/deploy-stage'

# Please make sure this directory exists and contains uploaded files 
# most of the cases it is a good idea to keep your uploads apart from your source code
uploads_dir='/var/www/deploy-stage/shared/uploads'

# That is where Github repo is located
repo='git@github.com:your-organization/your-project.git'
timestamp="release_%s" % int(time.time() * 1000)

# Please note - /var/www/public has to be a symbolic link on the server where you will be deploing to
# so if such folder already exists - please either rename it or remove it
env.app_dir='/var/www/public'

# Git branch which is used by git to clone the repo - in case you need smth else than master which is used by default
env.branchname='develop'

env.update_permissions_commands = []
env.update_symlinks_commands = []
env.copy_config_commands = []

# Default environment name
env.environmentName = "dev"

def print_configuration():
    print("")
    print("---------------------")
    print("Global variables are")
    print("---------------------")
    print("Deploy stage directory on a remote server: %s" % code_dir)
    print("Uploads directory on a remote server: %s" % uploads_dir)
    print("Git repository to fetch from: %s" % repo)
    print("Release name: %s" % timestamp)
    print("")
    print("---------------------")
    print("Environment variables are:")
    print("---------------------")
    print("use_ssh_config=%s" % env.use_ssh_config)
    print("hosts=%s" % env.hosts)
    print("key_filename=%s" % env.key_filename)
    print("Application directory on a remote server: %s" % env.app_dir)
    print("Git branch to be used for deployment: %s" % env.branchname)
    print("")

def prod_env_init():
    print("Setting up configuration for deploying to PRODUCTION environment")
    env.app_dir='/var/www/public'
    env.branchname='master'
    env.use_ssh_config = True
    env.hosts = ['your-project-prod.com']
    environmentName = "prod"
    env.update_permissions_commands = [
        "chgrp -R vagrant .",
        "chmod -R ug+rwx ."
    ]
    env.update_symlinks_commands = [
        "ln -nfs %s %s" % (code_dir+'/releases/'+timestamp, env.app_dir),
        "chgrp -h vagrant %s" % env.app_dir,
        "ln -nfs %s %s/content/" % (uploads_dir, env.app_dir),
        "chgrp -h vagrant %s/content/uploads" % env.app_dir
    ]
    env.copy_config_commands = [
        "cp %s/shared/wp-config-%s.php %s/wp-config.php" % (code_dir, environmentName, env.app_dir)
    ]

def stage_env_init():
    print("Setting up configuration for deploying to STAGING environment")
    env.app_dir='/var/www/html'
    env.branchname='develop'
    env.key_filename='~/.ssh/your-pem-file.pem'
    env.hosts = ['user@XX.XXX.XXX.XX']
    environmentName = "stage"
    env.update_permissions_commands = [
        "chgrp -R www .",
        "chmod -R ug+rwx ."]
    env.update_symlinks_commands = [
        "sudo ln -nfs %s %s" % (code_dir+'/releases/'+timestamp, env.app_dir),
        "sudo chgrp -h www %s" % env.app_dir,
        "sudo ln -nfs %s %s/content/" % (uploads_dir, env.app_dir),
        "sudo chgrp -h www %s/content/uploads" % env.app_dir
    ]
    env.copy_config_commands = [
        "cp %s/shared/wp-config-%s.php %s/wp-config.php" % (code_dir, environmentName, env.app_dir)
    ]

def dev_env_init():
    print("Setting up configuration for deploying to DEVELOPMENT environment")
    print("Feel free to update this configuration..")

def set_env(environment):
    print("")
    print("Choosing environment to set")
    print("")
    if environment == "prod":
        prod_env_init()
    elif environment == "stage":
        stage_env_init()
    elif environment == "dev":
        dev_env_init()
    else:
        print("Environment %s is not known. Exiting..." % environment)
    print("")

def deploy():
    print_configuration()
    fetch_repo()
    run_composer()
    update_permissions()
    update_symlinks()
    copy_config()

def fetch_repo():
    with cd(code_dir):
        with settings(warn_only=True):
            run("mkdir releases")
    with cd("%s/releases" % code_dir):
        run("git clone %s %s --branch %s" % (repo, timestamp, env.branchname))

def run_composer():
    with cd("%s/releases/%s" % (code_dir, timestamp)):
        run("composer install")

def update_permissions():
    with cd("%s/releases/%s" % (code_dir, timestamp)):
        for command in env.update_permissions_commands:
            run(command)

def update_symlinks():
    for command in env.update_symlinks_commands:
        run(command)

def copy_config():
    for command in env.copy_config_commands:
        run(command)