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piku.py
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piku.py
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#!/usr/bin/env python3
"Piku Micro-PaaS"
try:
from sys import version_info
assert version_info >= (3,5)
except AssertionError:
exit("Piku requires Python 3.5 or above")
from click import argument, command, group, get_current_context, option, secho as echo, pass_context
from collections import defaultdict, deque
from fcntl import fcntl, F_SETFL, F_GETFL
from glob import glob
from json import loads
from multiprocessing import cpu_count
from os import chmod, getgid, getuid, symlink, unlink, remove, stat, listdir, environ, makedirs, O_NONBLOCK
from os.path import abspath, basename, dirname, exists, getmtime, join, realpath, splitext
from re import sub
from shutil import copyfile, rmtree, which
from socket import socket, AF_INET, SOCK_STREAM
from sys import argv, stdin, stdout, stderr, version_info, exit
from stat import S_IRUSR, S_IWUSR, S_IXUSR
from subprocess import call, check_output, Popen, STDOUT, PIPE
from tempfile import NamedTemporaryFile
from traceback import format_exc
from time import sleep
from urllib.request import urlopen
from pwd import getpwuid
from grp import getgrgid
# === Make sure we can access all system binaries ===
if 'sbin' not in environ['PATH']:
environ['PATH'] = "/usr/local/sbin:/usr/sbin:/sbin:" + environ['PATH']
# === Globals - all tweakable settings are here ===
PIKU_ROOT = environ.get('PIKU_ROOT', join(environ['HOME'],'.piku'))
PIKU_BIN = join(environ['HOME'],'bin')
PIKU_SCRIPT = realpath(__file__)
APP_ROOT = abspath(join(PIKU_ROOT, "apps"))
ENV_ROOT = abspath(join(PIKU_ROOT, "envs"))
GIT_ROOT = abspath(join(PIKU_ROOT, "repos"))
LOG_ROOT = abspath(join(PIKU_ROOT, "logs"))
NGINX_ROOT = abspath(join(PIKU_ROOT, "nginx"))
UWSGI_AVAILABLE = abspath(join(PIKU_ROOT, "uwsgi-available"))
UWSGI_ENABLED = abspath(join(PIKU_ROOT, "uwsgi-enabled"))
UWSGI_ROOT = abspath(join(PIKU_ROOT, "uwsgi"))
UWSGI_LOG_MAXSIZE = '1048576'
ACME_ROOT = environ.get('ACME_ROOT', join(environ['HOME'],'.acme.sh'))
ACME_WWW = abspath(join(PIKU_ROOT, "acme"))
# === Make sure we can access piku user-installed binaries === #
if PIKU_BIN not in environ['PATH']:
environ['PATH'] = PIKU_BIN + ":" + environ['PATH']
# pylint: disable=anomalous-backslash-in-string
NGINX_TEMPLATE = """
upstream $APP {
server $NGINX_SOCKET;
}
server {
listen $NGINX_IPV6_ADDRESS:80;
listen $NGINX_IPV4_ADDRESS:80;
location ^~ /.well-known/acme-challenge {
allow all;
root ${ACME_WWW};
}
$INTERNAL_NGINX_COMMON
}
"""
NGINX_HTTPS_ONLY_TEMPLATE = """
upstream $APP {
server $NGINX_SOCKET;
}
server {
listen $NGINX_IPV6_ADDRESS:80;
listen $NGINX_IPV4_ADDRESS:80;
server_name $NGINX_SERVER_NAME;
location ^~ /.well-known/acme-challenge {
allow all;
root ${ACME_WWW};
}
location / {
return 301 https://$server_name$request_uri;
}
}
server {
$INTERNAL_NGINX_COMMON
}
"""
# pylint: enable=anomalous-backslash-in-string
NGINX_COMMON_FRAGMENT = """
listen $NGINX_IPV6_ADDRESS:$NGINX_SSL;
listen $NGINX_IPV4_ADDRESS:$NGINX_SSL;
ssl on;
ssl_certificate $NGINX_ROOT/$APP.crt;
ssl_certificate_key $NGINX_ROOT/$APP.key;
server_name $NGINX_SERVER_NAME;
# These are not required under systemd - enable for debugging only
# access_log $LOG_ROOT/$APP/access.log;
# error_log $LOG_ROOT/$APP/error.log;
# Enable gzip compression
gzip on;
gzip_proxied any;
gzip_types text/plain text/xml text/css application/x-javascript text/javascript application/xml+rss application/atom+xml;
gzip_comp_level 7;
gzip_min_length 2048;
gzip_vary on;
gzip_disable "MSIE [1-6]\.(?!.*SV1)";
# set a custom header for requests
add_header X-Deployed-By Piku;
$INTERNAL_NGINX_CUSTOM_CLAUSES
$INTERNAL_NGINX_STATIC_MAPPINGS
$INTERNAL_NGINX_BLOCK_GIT
$INTERNAL_NGINX_PORTMAP
"""
NGINX_PORTMAP_FRAGMENT = """
location / {
$INTERNAL_NGINX_UWSGI_SETTINGS
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Port $server_port;
proxy_set_header X-Request-Start $msec;
$NGINX_ACL
}
"""
NGINX_ACME_FIRSTRUN_TEMPLATE = """
server {
listen $NGINX_IPV6_ADDRESS:80;
listen $NGINX_IPV4_ADDRESS:80;
server_name $NGINX_SERVER_NAME;
location ^~ /.well-known/acme-challenge {
allow all;
root ${ACME_WWW};
}
}
"""
INTERNAL_NGINX_STATIC_MAPPING = """
location $static_url {
sendfile on;
sendfile_max_chunk 1m;
tcp_nopush on;
directio 8m;
aio threads;
alias $static_path;
}
"""
INTERNAL_NGINX_UWSGI_SETTINGS = """
uwsgi_pass $APP;
uwsgi_param QUERY_STRING $query_string;
uwsgi_param REQUEST_METHOD $request_method;
uwsgi_param CONTENT_TYPE $content_type;
uwsgi_param CONTENT_LENGTH $content_length;
uwsgi_param REQUEST_URI $request_uri;
uwsgi_param PATH_INFO $document_uri;
uwsgi_param DOCUMENT_ROOT $document_root;
uwsgi_param SERVER_PROTOCOL $server_protocol;
uwsgi_param REMOTE_ADDR $remote_addr;
uwsgi_param REMOTE_PORT $remote_port;
uwsgi_param SERVER_ADDR $server_addr;
uwsgi_param SERVER_PORT $server_port;
uwsgi_param SERVER_NAME $server_name;
"""
# === Utility functions ===
def sanitize_app_name(app):
"""Sanitize the app name and build matching path"""
app = "".join(c for c in app if c.isalnum() or c in ('.','_')).rstrip().lstrip('/')
return app
def exit_if_invalid(app):
"""Utility function for error checking upon command startup."""
app = sanitize_app_name(app)
if not exists(join(APP_ROOT, app)):
echo("Error: app '{}' not found.".format(app), fg='red')
exit(1)
return app
def get_free_port(address=""):
"""Find a free TCP port (entirely at random)"""
s = socket(AF_INET, SOCK_STREAM)
s.bind((address,0))
port = s.getsockname()[1]
s.close()
return port
def write_config(filename, bag, separator='='):
"""Helper for writing out config files"""
with open(filename, 'w') as h:
# pylint: disable=unused-variable
for k, v in bag.items():
h.write('{k:s}{separator:s}{v}\n'.format(**locals()))
def setup_authorized_keys(ssh_fingerprint, script_path, pubkey):
"""Sets up an authorized_keys file to redirect SSH commands"""
authorized_keys = join(environ['HOME'],'.ssh','authorized_keys')
if not exists(dirname(authorized_keys)):
makedirs(dirname(authorized_keys))
# Restrict features and force all SSH commands to go through our script
with open(authorized_keys, 'a') as h:
h.write("""command="FINGERPRINT={ssh_fingerprint:s} NAME=default {script_path:s} $SSH_ORIGINAL_COMMAND",no-agent-forwarding,no-user-rc,no-X11-forwarding,no-port-forwarding {pubkey:s}\n""".format(**locals()))
chmod(dirname(authorized_keys), S_IRUSR | S_IWUSR | S_IXUSR)
chmod(authorized_keys, S_IRUSR | S_IWUSR)
def parse_procfile(filename):
"""Parses a Procfile and returns the worker types. Only one worker of each type is allowed."""
workers = {}
if not exists(filename):
return None
with open(filename, 'r') as procfile:
for line in procfile:
try:
kind, command = map(lambda x: x.strip(), line.split(":", 1))
workers[kind] = command
except:
echo("Warning: unrecognized Procfile entry '{}'".format(line), fg='yellow')
if not len(workers):
return {}
# WSGI trumps regular web workers
if 'wsgi' in workers or 'jwsgi' in workers:
if 'web' in workers:
echo("Warning: found both 'wsgi' and 'web' workers, disabling 'web'", fg='yellow')
del(workers['web'])
return workers
def expandvars(buffer, env, default=None, skip_escaped=False):
"""expand shell-style environment variables in a buffer"""
def replace_var(match):
return env.get(match.group(2) or match.group(1), match.group(0) if default is None else default)
pattern = (r'(?<!\\)' if skip_escaped else '') + r'\$(\w+|\{([^}]*)\})'
return sub(pattern, replace_var, buffer)
def command_output(cmd):
"""executes a command and grabs its output, if any"""
try:
env = environ
return str(check_output(cmd, stderr=STDOUT, env=env, shell=True))
except:
return ""
def parse_settings(filename, env={}):
"""Parses a settings file and returns a dict with environment variables"""
if not exists(filename):
return {}
with open(filename, 'r') as settings:
for line in settings:
if '#' == line[0] or len(line.strip()) == 0: # ignore comments and newlines
continue
try:
k, v = map(lambda x: x.strip(), line.split("=", 1))
env[k] = expandvars(v, env)
except:
echo("Error: malformed setting '{}', ignoring file.".format(line), fg='red')
return {}
return env
def check_requirements(binaries):
"""Checks if all the binaries exist and are executable"""
echo("-----> Checking requirements: {}".format(binaries), fg='green')
requirements = list(map(which, binaries))
echo(str(requirements))
if None in requirements:
return False
return True
def found_app(kind):
echo("-----> {} app detected.".format(kind), fg='green')
return True
def do_deploy(app, deltas={}, newrev=None):
"""Deploy an app by resetting the work directory"""
app_path = join(APP_ROOT, app)
procfile = join(app_path, 'Procfile')
log_path = join(LOG_ROOT, app)
env_file = join(APP_ROOT, app, 'ENV')
config_file = join(ENV_ROOT, app, 'ENV')
env = {'GIT_WORK_DIR': app_path}
if exists(app_path):
echo("-----> Deploying app '{}'".format(app), fg='green')
call('git fetch --quiet', cwd=app_path, env=env, shell=True)
if newrev:
call('git reset --hard {}'.format(newrev), cwd=app_path, env=env, shell=True)
call('git submodule init', cwd=app_path, env=env, shell=True)
call('git submodule update', cwd=app_path, env=env, shell=True)
if not exists(log_path):
makedirs(log_path)
workers = parse_procfile(procfile)
if workers and len(workers):
settings = {}
if exists(join(app_path, 'requirements.txt')) and found_app("Python"):
settings.update(deploy_python(app, deltas))
elif exists(join(app_path, 'package.json')) and found_app("Node") and (check_requirements(['nodejs', 'npm']) or check_requirements(['nodeenv'])):
settings.update(deploy_node(app, deltas))
elif exists(join(app_path, 'pom.xml')) and found_app("Java Maven") and check_requirements(['java', 'mvn']):
settings.update(deploy_java(app, deltas))
elif exists(join(app_path, 'build.gradle')) and found_app("Java Gradle") and check_requirements(['java', 'gradle']):
settings.update(deploy_java(app, deltas))
elif (exists(join(app_path, 'Godeps')) or len(glob(join(app_path,'*.go')))) and found_app("Go") and check_requirements(['go']):
settings.update(deploy_go(app, deltas))
elif exists(join(app_path, 'project.clj')) and found_app("Clojure Lein") and check_requirements(['java', 'lein']):
settings.update(deploy_clojure(app, deltas))
elif 'release' in workers and 'web' in workers:
echo("-----> Generic app detected.", fg='green')
settings.update(deploy_identity(app, deltas))
elif 'static' in workers:
echo("-----> Static app detected.", fg='green')
settings.update(deploy_identity(app, deltas))
else:
echo("-----> Could not detect runtime!", fg='red')
# TODO: detect other runtimes
if "release" in workers:
echo("-----> Releasing", fg='green')
retval = call(workers["release"], cwd=app_path, env=settings, shell=True)
if retval:
echo("-----> Exiting due to release command error value: {}".format(retval))
exit(retval)
workers.pop("release", None)
else:
echo("Error: Invalid Procfile for app '{}'.".format(app), fg='red')
else:
echo("Error: app '{}' not found.".format(app), fg='red')
def deploy_gradle(app, deltas={}):
"""Deploy a Java application using Gradle"""
java_path = join(ENV_ROOT, app)
build_path = join(APP_ROOT, app, 'build')
env_file = join(APP_ROOT, app, 'ENV')
build = join(APP_ROOT, app, 'build.gradle')
env = {
'VIRTUAL_ENV': java_path,
"PATH": ':'.join([join(java_path, "bin"), join(app, ".bin"),environ['PATH']])
}
if exists(env_file):
env.update(parse_settings(env_file, env))
if not exists(java_path):
makedirs(java_path)
if not exists(build_path):
echo("-----> Building Java Application")
call('gradle build', cwd=join(APP_ROOT, app), env=env, shell=True)
else:
echo("-----> Removing previous builds")
echo("-----> Rebuilding Java Application")
call('gradle clean build', cwd=join(APP_ROOT, app), env=env, shell=True)
return spawn_app(app, deltas)
def deploy_java(app, deltas={}):
"""Deploy a Java application using Maven"""
# TODO: Use jenv to isolate Java Application environments
java_path = join(ENV_ROOT, app)
target_path = join(APP_ROOT, app, 'target')
env_file = join(APP_ROOT, app, 'ENV')
pom = join(APP_ROOT, app, 'pom.xml')
env = {
'VIRTUAL_ENV': java_path,
"PATH": ':'.join([join(java_path, "bin"), join(app, ".bin"),environ['PATH']])
}
if exists(env_file):
env.update(parse_settings(env_file, env))
if not exists(java_path):
makedirs(java_path)
if not exists(target_path):
echo("-----> Building Java Application")
call('mvn package', cwd=join(APP_ROOT, app), env=env, shell=True)
else:
echo("-----> Removing previous builds")
echo("-----> Rebuilding Java Application")
call('mvn clean package', cwd=join(APP_ROOT, app), env=env, shell=True)
return spawn_app(app, deltas)
def deploy_clojure(app, deltas={}):
"""Deploy a Clojure Application"""
virtual = join(ENV_ROOT, app)
target_path = join(APP_ROOT, app, 'target')
env_file = join(APP_ROOT, app, 'ENV')
projectfile = join(APP_ROOT, app, 'project.clj')
if not exists(target_path):
makedirs(virtual)
env = {
'VIRTUAL_ENV': virtual,
"PATH": ':'.join([join(virtual, "bin"), join(app, ".bin"), environ['PATH']]),
"LEIN_HOME": environ.get('LEIN_HOME', join(environ['HOME'],'.lein')),
}
if exists(env_file):
env.update(parse_settings(env_file, env))
echo("-----> Building Clojure Application")
call('lein clean', cwd=join(APP_ROOT, app), env=env, shell=True)
call('lein uberjar', cwd=join(APP_ROOT, app), env=env, shell=True)
return spawn_app(app, deltas)
def deploy_go(app, deltas={}):
"""Deploy a Go application"""
go_path = join(ENV_ROOT, app)
deps = join(APP_ROOT, app, 'Godeps')
first_time = False
if not exists(go_path):
echo("-----> Creating GOPATH for '{}'".format(app), fg='green')
makedirs(go_path)
# copy across a pre-built GOPATH to save provisioning time
call('cp -a $HOME/gopath {}'.format(app), cwd=ENV_ROOT, shell=True)
first_time = True
if exists(deps):
if first_time or getmtime(deps) > getmtime(go_path):
echo("-----> Running godep for '{}'".format(app), fg='green')
env = {
'GOPATH': '$HOME/gopath',
'GOROOT': '$HOME/go',
'PATH': '$PATH:$HOME/go/bin',
'GO15VENDOREXPERIMENT': '1'
}
call('godep update ...', cwd=join(APP_ROOT, app), env=env, shell=True)
return spawn_app(app, deltas)
def deploy_node(app, deltas={}):
"""Deploy a Node application"""
virtualenv_path = join(ENV_ROOT, app)
node_path = join(ENV_ROOT, app, "node_modules")
node_path_tmp = join(APP_ROOT, app, "node_modules")
env_file = join(APP_ROOT, app, 'ENV')
deps = join(APP_ROOT, app, 'package.json')
first_time = False
if not exists(node_path):
echo("-----> Creating node_modules for '{}'".format(app), fg='green')
makedirs(node_path)
first_time = True
env = {
'VIRTUAL_ENV': virtualenv_path,
'NODE_PATH': node_path,
'NPM_CONFIG_PREFIX': abspath(join(node_path, "..")),
"PATH": ':'.join([join(virtualenv_path, "bin"), join(node_path, ".bin"),environ['PATH']])
}
if exists(env_file):
env.update(parse_settings(env_file, env))
# include node binaries on our path
environ["PATH"] = env["PATH"]
version = env.get("NODE_VERSION")
node_binary = join(virtualenv_path, "bin", "node")
installed = check_output("{} -v".format(node_binary), cwd=join(APP_ROOT, app), env=env, shell=True).decode("utf8").rstrip("\n") if exists(node_binary) else ""
if version and check_requirements(['nodeenv']):
if not installed.endswith(version):
started = glob(join(UWSGI_ENABLED, '{}*.ini'.format(app)))
if installed and len(started):
echo("Warning: Can't update node with app running. Stop the app & retry.", fg='yellow')
else:
echo("-----> Installing node version '{NODE_VERSION:s}' using nodeenv".format(**env), fg='green')
call("nodeenv --prebuilt --node={NODE_VERSION:s} --clean-src --force {VIRTUAL_ENV:s}".format(**env), cwd=virtualenv_path, env=env, shell=True)
else:
echo("-----> Node is installed at {}.".format(version))
if exists(deps) and check_requirements(['npm']):
if first_time or getmtime(deps) > getmtime(node_path):
echo("-----> Running npm for '{}'".format(app), fg='green')
symlink(node_path, node_path_tmp)
call('npm install', cwd=join(APP_ROOT, app), env=env, shell=True)
unlink(node_path_tmp)
return spawn_app(app, deltas)
def deploy_python(app, deltas={}):
"""Deploy a Python application"""
virtualenv_path = join(ENV_ROOT, app)
requirements = join(APP_ROOT, app, 'requirements.txt')
env_file = join(APP_ROOT, app, 'ENV')
# Peek at environment variables shipped with repo (if any) to determine version
env = {}
if exists(env_file):
env.update(parse_settings(env_file, env))
# TODO: improve version parsing
# pylint: disable=unused-variable
version = int(env.get("PYTHON_VERSION", "3"))
first_time = False
if not exists(virtualenv_path):
echo("-----> Creating virtualenv for '{}'".format(app), fg='green')
makedirs(virtualenv_path)
call('virtualenv --python=python{version:d} {app:s}'.format(**locals()), cwd=ENV_ROOT, shell=True)
first_time = True
activation_script = join(virtualenv_path,'bin','activate_this.py')
exec(open(activation_script).read(), dict(__file__=activation_script))
if first_time or getmtime(requirements) > getmtime(virtualenv_path):
echo("-----> Running pip for '{}'".format(app), fg='green')
call('pip install -r {}'.format(requirements), cwd=virtualenv_path, shell=True)
return spawn_app(app, deltas)
def deploy_identity(app, deltas={}):
env_path = join(ENV_ROOT, app)
if not exists(env_path):
makedirs(env_path)
return spawn_app(app, deltas)
def spawn_app(app, deltas={}):
"""Create all workers for an app"""
# pylint: disable=unused-variable
app_path = join(APP_ROOT, app)
procfile = join(app_path, 'Procfile')
workers = parse_procfile(procfile)
workers.pop("release", None)
ordinals = defaultdict(lambda:1)
worker_count = {k:1 for k in workers.keys()}
# the Python virtualenv
virtualenv_path = join(ENV_ROOT, app)
# Settings shipped with the app
env_file = join(APP_ROOT, app, 'ENV')
# Custom overrides
settings = join(ENV_ROOT, app, 'ENV')
# Live settings
live = join(ENV_ROOT, app, 'LIVE_ENV')
# Scaling
scaling = join(ENV_ROOT, app, 'SCALING')
# Bootstrap environment
env = {
'APP': app,
'LOG_ROOT': LOG_ROOT,
'HOME': environ['HOME'],
'USER': environ['USER'],
'PATH': ':'.join([join(virtualenv_path,'bin'),environ['PATH']]),
'PWD': dirname(env_file),
'VIRTUAL_ENV': virtualenv_path,
}
safe_defaults = {
'NGINX_IPV4_ADDRESS': '0.0.0.0',
'NGINX_IPV6_ADDRESS': '[::]',
'BIND_ADDRESS': '127.0.0.1',
}
# add node path if present
node_path = join(virtualenv_path, "node_modules")
if exists(node_path):
env["NODE_PATH"] = node_path
env["PATH"] = ':'.join([join(node_path, ".bin"),env['PATH']])
# Load environment variables shipped with repo (if any)
if exists(env_file):
env.update(parse_settings(env_file, env))
# Override with custom settings (if any)
if exists(settings):
env.update(parse_settings(settings, env))
if 'web' in workers or 'wsgi' in workers or 'jwsgi' in workers or 'static' in workers:
# Pick a port if none defined
if 'PORT' not in env:
env['PORT'] = str(get_free_port())
echo("-----> picking free port {PORT}".format(**env))
# Safe defaults for addressing
for k, v in safe_defaults.items():
if k not in env:
echo("-----> nginx {k:s} set to {v}".format(**locals()))
env[k] = v
# Set up nginx if we have NGINX_SERVER_NAME set
if 'NGINX_SERVER_NAME' in env:
nginx = command_output("nginx -V")
nginx_ssl = "443 ssl"
if "--with-http_v2_module" in nginx:
nginx_ssl += " http2"
elif "--with-http_spdy_module" in nginx and "nginx/1.6.2" not in nginx: # avoid Raspbian bug
nginx_ssl += " spdy"
nginx_conf = join(NGINX_ROOT,"{}.conf".format(app))
env.update({
'NGINX_SSL': nginx_ssl,
'NGINX_ROOT': NGINX_ROOT,
'ACME_WWW': ACME_WWW,
})
# default to reverse proxying to the TCP port we picked
env['INTERNAL_NGINX_UWSGI_SETTINGS'] = 'proxy_pass http://{BIND_ADDRESS:s}:{PORT:s};'.format(**env)
if 'wsgi' in workers or 'jwsgi' in workers:
sock = join(NGINX_ROOT, "{}.sock".format(app))
env['INTERNAL_NGINX_UWSGI_SETTINGS'] = expandvars(INTERNAL_NGINX_UWSGI_SETTINGS, env)
env['NGINX_SOCKET'] = env['BIND_ADDRESS'] = "unix://" + sock
if 'PORT' in env:
del env['PORT']
else:
env['NGINX_SOCKET'] = "{BIND_ADDRESS:s}:{PORT:s}".format(**env)
echo("-----> nginx will look for app '{}' on {}".format(app, env['NGINX_SOCKET']))
domain = env['NGINX_SERVER_NAME'].split()[0]
key, crt = [join(NGINX_ROOT, "{}.{}".format(app,x)) for x in ['key','crt']]
if exists(join(ACME_ROOT, "acme.sh")):
acme = ACME_ROOT
www = ACME_WWW
# if this is the first run there will be no nginx conf yet
# create a basic conf stub just to serve the acme auth
if not exists(nginx_conf):
echo("-----> writing temporary nginx conf")
buffer = expandvars(NGINX_ACME_FIRSTRUN_TEMPLATE, env)
with open(nginx_conf, "w") as h:
h.write(buffer)
if not exists(key) or not exists(join(ACME_ROOT, domain, domain + ".key")):
echo("-----> getting letsencrypt certificate")
call('{acme:s}/acme.sh --issue -d {domain:s} -w {www:s}'.format(**locals()), shell=True)
call('{acme:s}/acme.sh --install-cert -d {domain:s} --key-file {key:s} --fullchain-file {crt:s}'.format(**locals()), shell=True)
if exists(join(ACME_ROOT, domain)) and not exists(join(ACME_WWW, app)):
symlink(join(ACME_ROOT, domain), join(ACME_WWW, app))
else:
echo("-----> letsencrypt certificate already installed")
# fall back to creating self-signed certificate if acme failed
if not exists(key) or stat(crt).st_size == 0:
echo("-----> generating self-signed certificate")
call('openssl req -new -newkey rsa:4096 -days 365 -nodes -x509 -subj "/C=US/ST=NY/L=New York/O=Piku/OU=Self-Signed/CN={domain:s}" -keyout {key:s} -out {crt:s}'.format(**locals()), shell=True)
# restrict access to server from CloudFlare IP addresses
acl = []
if env.get('NGINX_CLOUDFLARE_ACL', 'false').lower() == 'true':
try:
cf = loads(urlopen('https://api.cloudflare.com/client/v4/ips').read().decode("utf-8"))
if cf['success'] == True:
for i in cf['result']['ipv4_cidrs']:
acl.append("allow {};".format(i))
for i in cf['result']['ipv6_cidrs']:
acl.append("allow {};".format(i))
# allow access from controlling machine
if 'SSH_CLIENT' in environ:
remote_ip = environ['SSH_CLIENT'].split()[0]
echo("-----> Adding your IP ({}) to nginx ACL".format(remote_ip))
acl.append("allow {};".format(remote_ip))
acl.extend(["allow 127.0.0.1;","deny all;"])
except Exception:
cf = defaultdict()
echo("-----> Could not retrieve CloudFlare IP ranges: {}".format(format_exc()), fg="red")
env['NGINX_ACL'] = " ".join(acl)
env['INTERNAL_NGINX_BLOCK_GIT'] = "" if env.get('NGINX_ALLOW_GIT_FOLDERS') else "location ~ /\.git { deny all; }"
env['INTERNAL_NGINX_STATIC_MAPPINGS'] = ''
# Get a mapping of /url:path1,/url2:path2
static_paths = env.get('NGINX_STATIC_PATHS','')
# prepend static worker path if present
if 'static' in workers:
stripped = workers['static'].strip("/").rstrip("/")
static_paths = "/:" + (stripped if stripped else ".") + "/" + ("," if static_paths else "") + static_paths
if len(static_paths):
try:
items = static_paths.split(',')
for item in items:
static_url, static_path = item.split(':')
if static_path[0] != '/':
static_path = join(app_path, static_path)
env['INTERNAL_NGINX_STATIC_MAPPINGS'] = env['INTERNAL_NGINX_STATIC_MAPPINGS'] + expandvars(INTERNAL_NGINX_STATIC_MAPPING, locals())
except Exception as e:
echo("Error {} in static path spec: should be /url1:path1[,/url2:path2], ignoring.".format(e))
env['INTERNAL_NGINX_STATIC_MAPPINGS'] = ''
env['INTERNAL_NGINX_CUSTOM_CLAUSES'] = expandvars(open(join(app_path, env["NGINX_INCLUDE_FILE"])).read(), env) if env.get("NGINX_INCLUDE_FILE") else ""
env['INTERNAL_NGINX_PORTMAP'] = ""
if 'web' in workers or 'wsgi' in workers or 'jwsgi' in workers:
env['INTERNAL_NGINX_PORTMAP'] = expandvars(NGINX_PORTMAP_FRAGMENT, env)
env['INTERNAL_NGINX_COMMON'] = expandvars(NGINX_COMMON_FRAGMENT, env)
echo("-----> nginx will map app '{}' to hostname '{}'".format(app, env['NGINX_SERVER_NAME']))
if('NGINX_HTTPS_ONLY' in env) or ('HTTPS_ONLY' in env):
buffer = expandvars(NGINX_HTTPS_ONLY_TEMPLATE, env)
echo("-----> nginx will redirect all requests to hostname '{}' to HTTPS".format(env['NGINX_SERVER_NAME']))
else:
buffer = expandvars(NGINX_TEMPLATE, env)
with open(nginx_conf, "w") as h:
h.write(buffer)
# prevent broken config from breaking other deploys
try:
nginx_config_test = str(check_output("nginx -t 2>&1 | grep {}".format(app), env=environ, shell=True))
except:
nginx_config_test = None
if nginx_config_test:
echo("Error: [nginx config] {}".format(nginx_config_test), fg='red')
echo("Warning: removing broken nginx config.", fg='yellow')
unlink(nginx_conf)
# Configured worker count
if exists(scaling):
worker_count.update({k: int(v) for k,v in parse_procfile(scaling).items() if k in workers})
to_create = {}
to_destroy = {}
for k, v in worker_count.items():
to_create[k] = range(1,worker_count[k] + 1)
if k in deltas and deltas[k]:
to_create[k] = range(1, worker_count[k] + deltas[k] + 1)
if deltas[k] < 0:
to_destroy[k] = range(worker_count[k], worker_count[k] + deltas[k], -1)
worker_count[k] = worker_count[k]+deltas[k]
# Cleanup env
for k, v in list(env.items()):
if k.startswith('INTERNAL_'):
del env[k]
# Save current settings
write_config(live, env)
write_config(scaling, worker_count, ':')
if env.get("AUTO_RESTART", False):
config = glob(join(UWSGI_ENABLED, '{}*.ini'.format(app)))
if len(config):
echo("-----> Removing uwsgi configs to trigger auto-restart.")
for c in config:
remove(c)
# Create new workers
for k, v in to_create.items():
for w in v:
enabled = join(UWSGI_ENABLED, '{app:s}_{k:s}.{w:d}.ini'.format(**locals()))
if not exists(enabled):
echo("-----> spawning '{app:s}:{k:s}.{w:d}'".format(**locals()), fg='green')
spawn_worker(app, k, workers[k], env, w)
# Remove unnecessary workers (leave logfiles)
for k, v in to_destroy.items():
for w in v:
enabled = join(UWSGI_ENABLED, '{app:s}_{k:s}.{w:d}.ini'.format(**locals()))
if exists(enabled):
echo("-----> terminating '{app:s}:{k:s}.{w:d}'".format(**locals()), fg='yellow')
unlink(enabled)
return env
def spawn_worker(app, kind, command, env, ordinal=1):
"""Set up and deploy a single worker of a given kind"""
# pylint: disable=unused-variable
env['PROC_TYPE'] = kind
env_path = join(ENV_ROOT, app)
available = join(UWSGI_AVAILABLE, '{app:s}_{kind:s}.{ordinal:d}.ini'.format(**locals()))
enabled = join(UWSGI_ENABLED, '{app:s}_{kind:s}.{ordinal:d}.ini'.format(**locals()))
log_file = join(LOG_ROOT, app, kind)
settings = [
('chdir', join(APP_ROOT, app)),
('master', 'true'),
('project', app),
('max-requests', env.get('UWSGI_MAX_REQUESTS', '1024')),
('listen', env.get('UWSGI_LISTEN', '16')),
('processes', env.get('UWSGI_PROCESSES', '1')),
('procname-prefix', '{app:s}:{kind:s}'.format(**locals())),
('enable-threads', env.get('UWSGI_ENABLE_THREADS', 'true').lower()),
('log-x-forwarded-for', env.get('UWSGI_LOG_X_FORWARDED_FOR', 'false').lower()),
('log-maxsize', env.get('UWSGI_LOG_MAXSIZE', UWSGI_LOG_MAXSIZE)),
('logto', '{log_file:s}.{ordinal:d}.log'.format(**locals())),
('log-backupname', '{log_file:s}.{ordinal:d}.log.old'.format(**locals())),
]
# only add virtualenv to uwsgi if it's a real virtualenv
if exists(join(env_path, "bin", "activate_this.py")):
settings.append(('virtualenv', env_path))
if kind== 'jwsgi':
settings.extend([
('module', command),
('threads', env.get('UWSGI_THREADS','4')),
('plugin', 'jvm'),
('plugin', 'jwsgi')
])
python_version = int(env.get('PYTHON_VERSION','3'))
if kind == 'wsgi':
settings.extend([
('module', command),
('threads', env.get('UWSGI_THREADS','4')),
])
if python_version == 2:
settings.extend([
('plugin', 'python'),
])
if 'UWSGI_GEVENT' in env:
settings.extend([
('plugin', 'gevent_python'),
('gevent', env['UWSGI_GEVENT']),
])
elif 'UWSGI_ASYNCIO' in env:
settings.extend([
('plugin', 'asyncio_python'),
])
elif python_version == 3:
settings.extend([
('plugin', 'python3'),
])
if 'UWSGI_ASYNCIO' in env:
settings.extend([
('plugin', 'asyncio_python3'),
])
# If running under nginx, don't expose a port at all
if 'NGINX_SERVER_NAME' in env:
sock = join(NGINX_ROOT, "{}.sock".format(app))
echo("-----> nginx will talk to uWSGI via {}".format(sock), fg='yellow')
settings.extend([
('socket', sock),
('chmod-socket', '664'),
])
else:
echo("-----> nginx will talk to uWSGI via {BIND_ADDRESS:s}:{PORT:s}".format(**env), fg='yellow')
settings.extend([
('http', '{BIND_ADDRESS:s}:{PORT:s}'.format(**env)),
('http-socket', '{BIND_ADDRESS:s}:{PORT:s}'.format(**env)),
])
elif kind == 'web':
echo("-----> nginx will talk to the 'web' process via {BIND_ADDRESS:s}:{PORT:s}".format(**env), fg='yellow')
settings.append(('attach-daemon', command))
elif kind == 'static':
echo("-----> nginx serving static files only".format(**env), fg='yellow')
else:
settings.append(('attach-daemon', command))
if kind in ['wsgi', 'web']:
settings.append(('log-format','%%(addr) - %%(user) [%%(ltime)] "%%(method) %%(uri) %%(proto)" %%(status) %%(size) "%%(referer)" "%%(uagent)" %%(msecs)ms'))
# remove unnecessary variables from the env in nginx.ini
for k in ['NGINX_ACL']:
if k in env:
del env[k]
# insert user defined uwsgi settings if set
settings += parse_settings(join(APP_ROOT, app, env.get("UWSGI_INCLUDE_FILE"))).items() if env.get("UWSGI_INCLUDE_FILE") else []
for k, v in env.items():
settings.append(('env', '{k:s}={v}'.format(**locals())))
if kind != 'static':
with open(available, 'w') as h:
h.write('[uwsgi]\n')
for k, v in settings:
h.write("{k:s} = {v}\n".format(**locals()))
copyfile(available, enabled)
def do_restart(app):
config = glob(join(UWSGI_ENABLED, '{}*.ini'.format(app)))
if len(config):
echo("Restarting app '{}'...".format(app), fg='yellow')
for c in config:
remove(c)
spawn_app(app)
else:
echo("Error: app '{}' not deployed!".format(app), fg='red')
def multi_tail(app, filenames, catch_up=20):
"""Tails multiple log files"""
# Seek helper
def peek(handle):
where = handle.tell()
line = handle.readline()
if not line:
handle.seek(where)
return None
return line
inodes = {}
files = {}
prefixes = {}
# Set up current state for each log file
for f in filenames:
prefixes[f] = splitext(basename(f))[0]
files[f] = open(f)
inodes[f] = stat(f).st_ino
files[f].seek(0, 2)
longest = max(map(len, prefixes.values()))
# Grab a little history (if any)
for f in filenames:
for line in deque(open(f), catch_up):
yield "{} | {}".format(prefixes[f].ljust(longest), line)
while True:
updated = False
# Check for updates on every file
for f in filenames:
line = peek(files[f])
if not line:
continue
else:
updated = True
yield "{} | {}".format(prefixes[f].ljust(longest), line)
if not updated:
sleep(1)
# Check if logs rotated
for f in filenames:
if exists(f):
if stat(f).st_ino != inodes[f]:
files[f] = open(f)
inodes[f] = stat(f).st_ino
else:
filenames.remove(f)
# === CLI commands ===
CONTEXT_SETTINGS = dict(help_option_names=['-h', '--help'])
@group(context_settings=CONTEXT_SETTINGS)
def piku():
"""The smallest PaaS you've ever seen"""
pass
@piku.resultcallback()
def cleanup(ctx):
"""Callback from command execution -- add debugging to taste"""
pass
# --- User commands ---