flask : new stack to deploy a flask server

stack/flask/__init__.py

+from server import *
+from werkzeug.contrib.fixers import ProxyFix
+
+app.wsgi_app = ProxyFix(app.wsgi_app)
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stack/flask/instance-flask.cfg

+[buildout]
+parts =
+  directory
+  certificate-authority
+  gunicorn-launcher
+  gunicorn-graceful
+  ca-nginx
+  nginx_conf
+  nginx-launcher
+  nginx-promise
+  flask-promise
+  symlinks
+  base-server
+  base-module
+  
+eggs-directory = ${buildout:eggs-directory}
+develop-eggs-directory = ${buildout:develop-eggs-directory}
+
+[directory]
+recipe = slapos.cookbook:mkdirectory
+etc = $${buildout:directory}/etc/
+var = $${buildout:directory}/var/
+srv = $${buildout:directory}/srv/
+bin = $${buildout:directory}/bin/
+tmp = $${buildout:directory}/tmp/
+
+services = $${:etc}/service/
+scripts = $${:etc}/run/
+www = $${:var}/www
+promises = $${:etc}/promise/
+run = $${:var}/run/
+log = $${:var}/log/
+nginx-data = $${:srv}/nginx/
+ca-dir = $${:srv}/ssl
+
+#---------------------------
+#--
+#-- setup nginx
+
+[tempdirectory]
+recipe = slapos.cookbook:mkdirectory
+client_body_temp_path = $${directory:tmp}/client_body_temp_path
+proxy_temp_path = $${directory:tmp}/proxy_temp_path
+fastcgi_temp_path = $${directory:tmp}/fastcgi_temp_path
+uwsgi_temp_path = $${directory:tmp}/uwsgi_temp_path
+scgi_temp_path = $${directory:tmp}/scgi_temp_path
+
+[nginx-frontend]
+# Network
+local-ip = $${slap-network-information:local-ipv4}
+port = 50006
+global-ip = $${slap-network-information:global-ipv6}
+# SSL
+ssl-certificate = $${ca-nginx:cert-file}
+ssl-key = $${ca-nginx:key-file}
+# Log
+path_pid = $${directory:run}/nginx.pid
+path_log = $${directory:log}/nginx.log
+path_access_log = $${directory:log}/nginx.access.log
+path_error_log = $${directory:log}/nginx.error.log
+path_tmp = $${buildout:directory}/tmp
+# Config files
+path_nginx_conf = $${directory:etc}/nginx.conf
+# Executables
+bin_nginx = ${nginx:location}/sbin/nginx
+bin_launcher = $${directory:bin}/nginx
+# Utils
+path_shell = ${dash:location}/bin/dash
+# Misc.
+etc_dir = $${directory:etc}
+
+[nginx_conf]
+recipe = slapos.recipe.template:jinja2
+template = ${template_nginx_conf:location}/${template_nginx_conf:filename}
+rendered = $${nginx-frontend:path_nginx_conf}
+context =
+    section param_nginx_frontend nginx-frontend
+    section param_tempdir tempdirectory
+    key socket gunicorn-frontend:socket
+    
+[nginx-launcher]
+recipe = slapos.recipe.template:jinja2
+template = ${nginx_template_launcher:location}/${nginx_template_launcher:filename}
+rendered = $${nginx-frontend:bin_launcher}
+mode = 700
+context =
+    section param_nginx_frontend nginx-frontend
+
+#---------------------
+#--
+#--WSGI
+
+[gunicorn-frontend]
+bin_gunicorn = $${directory:bin}/gunicorn
+bin_launcher = $${directory:services}/gunicorn
+path_shell = ${dash:location}/bin/dash
+socket = $${directory:tmp}/flaskserver.sock
+path_pid = $${directory:run}/gunicorn.pid
+  
+[gunicorn-launcher]
+recipe = slapos.cookbook:wrapper
+command-line = $${gunicorn-frontend:bin_gunicorn} www:app -p $${gunicorn-frontend:path_pid} -b unix:$${gunicorn-frontend:socket}
+wrapper-path = $${gunicorn-frontend:bin_launcher}
+environment = PYTHONPATH=$PYTHONPATH:$${directory:var}
+
+[gunicorn-graceful]
+recipe = slapos.cookbook:wrapper
+command-line = $${directory:bin}/killpidfromfile $${gunicorn-frontend:path_pid} SIGHUP
+wrapper-path = $${directory:scripts}/gunicorn-graceful
+
+#--------------------
+#--
+#-- ssl certificates
+
+[certificate-authority]
+recipe = slapos.cookbook:certificate_authority
+openssl-binary = ${openssl:location}/bin/openssl
+ca-dir = $${directory:ca-dir}
+requests-directory = $${cadirectory:requests}
+wrapper = $${directory:services}/certificate_authority
+ca-private = $${cadirectory:private}
+ca-certs = $${cadirectory:certs}
+ca-newcerts = $${cadirectory:newcerts}
+ca-crl = $${cadirectory:crl}
+
+[cadirectory]
+recipe = slapos.cookbook:mkdirectory
+requests = $${directory:ca-dir}/requests/
+private = $${directory:ca-dir}/private/
+certs = $${directory:ca-dir}/certs/
+newcerts = $${directory:ca-dir}/newcerts/
+crl = $${directory:ca-dir}/crl/
+
+[ca-nginx]
+<= certificate-authority
+recipe = slapos.cookbook:certificate_authority.request
+key-file = $${cadirectory:certs}/nginx_frontend.key
+cert-file = $${cadirectory:certs}/nginx_frontend.crt
+executable = $${nginx-launcher:rendered}
+wrapper = $${directory:services}/nginx-frontend
+# Put domain name
+name = example.com
+
+#copy in var/www the minimum files to create a flask application
+[base-server]
+recipe = hexagonit.recipe.download
+url = ${server_base_py:location}/${server_base_py:filename}
+#md5sum = 
+download-only = true
+destination = $${directory:www}
+mode = 0644
+
+[base-module]
+recipe = hexagonit.recipe.download
+url = ${module_base_py:location}/${module_base_py:filename}
+#md5sum = 
+download-only = true
+destination = $${directory:www}
+mode = 0644
+
+# check promises
+[nginx-promise]
+recipe = slapos.cookbook:check_port_listening
+path = $${directory:promises}/nginx
+hostname = $${nginx-frontend:global-ip}
+port = $${nginx-frontend:port}
+
+[flask-promise]
+recipe = slapos.cookbook:check_url_available
+path = $${directory:promises}/flask
+url = https://[$${nginx-frontend:global-ip}]:$${nginx-frontend:port}
+dash_path = ${dash:location}/bin/dash
+curl_path = ${curl:location}/bin/curl
+
+[symlinks]
+recipe = cns.recipe.symlink
+symlink_target = $${directory:bin}
+symlink_base = ${buildout:directory}/bin
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stack/flask/instance.cfg

+[buildout]
+parts = 
+  switch_softwaretype
+
+eggs-directory = ${buildout:eggs-directory}
+develop-eggs-directory = ${buildout:develop-eggs-directory}
+  
+[switch_softwaretype]
+recipe = slapos.cookbook:softwaretype
+default = ${template-flask:output}
+flask = ${template-flask:output}
+
+[slap-configuration]
+recipe = slapos.cookbook:slapconfiguration.serialised
+computer = $${slap-connection:computer-id}
+partition = $${slap-connection:partition-id}
+url = $${slap-connection:server-url}
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stack/flask/launcher-nginx.in

+#! {{ param_nginx_frontend['path_shell'] }}
+# BEWARE: This file is operated by slapgrid
+# BEWARE: It will be overwritten automatically
+# Run nginx
+
+exec {{ param_nginx_frontend['bin_nginx'] }} -c {{ param_nginx_frontend['path_nginx_conf'] }}
\ No newline at end of file

stack/flask/nginx_conf.in

+worker_processes 1;
+
+pid {{ param_nginx_frontend['path_pid'] }};
+error_log {{ param_nginx_frontend['path_error_log'] }};
+
+daemon off;
+
+events {
+        worker_connections 1024;
+        accept_mutex off;
+}
+
+http {
+     default_type application/octet-stream;
+     access_log {{ param_nginx_frontend['path_access_log'] }} combined;
+     map $http_upgrade $connection_upgrade {
+        default upgrade;
+        ''      close;
+     }
+     server {
+        listen [{{ param_nginx_frontend['global-ip'] }}]:{{ param_nginx_frontend['port'] }} ssl;
+        server_name _;
+        ssl_certificate     {{ param_nginx_frontend['ssl-certificate'] }};
+        ssl_certificate_key {{ param_nginx_frontend['ssl-key'] }};
+        ssl_protocols       SSLv3 TLSv1 TLSv1.1 TLSv1.2;
+        ssl_ciphers         HIGH:!aNULL:!MD5;
+        keepalive_timeout 90s;
+        client_body_temp_path {{ param_tempdir['client_body_temp_path'] }};
+        proxy_temp_path {{ param_tempdir['proxy_temp_path'] }};
+        fastcgi_temp_path {{ param_tempdir['fastcgi_temp_path'] }};
+        uwsgi_temp_path {{ param_tempdir['uwsgi_temp_path'] }};
+        scgi_temp_path {{ param_tempdir['scgi_temp_path'] }};
+        location / {
+            proxy_redirect off;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Host $http_host;
+            proxy_set_header X-Accel-Mapping /private/;
+            
+            proxy_pass http://unix:{{ socket }};
+        }
+    }
+}
\ No newline at end of file

stack/flask/server.py

+from flask import Flask
+app = Flask(__name__)
+
+@app.route("/")
+def hello():
+    return "Hello World!"
+
+if __name__ == "__main__":
+    app.run()

stack/flask/software.cfg

+# Stack for Flask microframework: http://flask.pocoo.org/
+[buildout]
+extends =
+  ../../stack/slapos.cfg
+  ../../stack/flask.cfg
+  ../../component/nginx/buildout.cfg
+  ../../component/dash/buildout.cfg
+  ../../component/curl/buildout.cfg
+
+parts =
+  slapos-cookbook
+  slapos-toolbox
+  eggs
+  template
+  nginx
+  nginx_template_launcher
+  template_nginx_conf
+  module_base_py
+  server_base_py
+
+[template]
+recipe = slapos.recipe.template
+url = ${:_profile_base_location_}/instance.cfg
+output = ${buildout:directory}/template.cfg
+md5sum = 9d60640c58337c9b40d11a9047044627
+mode = 0644
+
+[template-flask]
+recipe = slapos.recipe.template
+url = ${:_profile_base_location_}/instance-flask.cfg
+output = ${buildout:directory}/template-flask.cfg
+md5sum = 9d38d13f46024625bb46a9e3c912dc17
+mode = 0644
+
+[template_nginx_conf]
+recipe = slapos.recipe.download
+url = ${:_profile_base_location_}/nginx_conf.in
+md5sum = 53dbaa3b816a22f58ee609379cd6147e
+filename = nginx_conf.in
+location = ${buildout:parts-directory}/${:_buildout_section_name_}
+mode = 0644
+
+[nginx_template_launcher]
+recipe = slapos.recipe.download
+url = ${:_profile_base_location_}/launcher-nginx.in
+md5sum = 0ca1502bddf082220e574ef867d7176b
+filename = launcher-nginx.in
+mode = 0644
+location = ${buildout:parts-directory}/${:_buildout_section_name_}
+
+[module_base_py]
+recipe = hexagonit.recipe.download
+url = ${:_profile_base_location_}/${:filename}
+md5sum = 5ad39f196605b062e94b738da03fe91c
+location = ${buildout:parts-directory}/${:_buildout_section_name_}
+download-only = true
+filename = __init__.py
+mode = 0644
+
+[server_base_py]
+recipe = hexagonit.recipe.download
+url = ${:_profile_base_location_}/${:filename}
+md5sum = a2bf143a482d46dee421a24189a4b069
+location = ${buildout:parts-directory}/${:_buildout_section_name_}
+download-only = true
+filename = server.py
+mode = 0644
+
+[slapos-toolbox]
+recipe = zc.recipe.egg
+eggs = slapos.toolbox
+scripts = killpidfromfile
+
+[eggs]
+recipe = zc.recipe.egg
+eggs =
+  slapos.cookbook
+  hexagonit.recipe.download
+  Gunicorn
+  
+[versions]
+gunicorn = 18.0
+Flask = 0.10
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