majic-ansible-roles Changeset

Changeset - 67dd87d59abb

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Branko Majic (branko) - 7 years ago 2016-11-28 22:39:12
branko@majic.rs

MAR-83: Added support to wsgi_website role for specifying headers that should be passed on to Gunicorn by Nginx. Updated hello.wsgi app to demonstrate the feature.

6 files changed with 24 insertions and 3 deletions:

docs/rolereference.rst

docs/usage.rst

roles/wsgi_website/defaults/main.yml

roles/wsgi_website/templates/nginx_site.j2

testsite/group_vars/web.yml

testsite/playbooks/roles/wsgihello/files/hello.wsgi

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docs/rolereference.rst

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@@ @@ -1570,6 +1570,13 @@ Parameters @@
   website. This is usually going to be development libraries for building Python
   packages.
 **proxy_headers** (dictionary, optional, ``{}``)
   Additional headers to set when proxying request to Gunicorn. Keys are header
   names, values are header values. Both should be compatible with Nginx
   ``proxy_set_header``. If you need to provide an empty value, use quotes (don't
   forget to surround them by another set of quotes for YAML syntax, for example
   ``"\"\""`` or ``'""'``).
 **rewrites** (list, optional, ``[]``)
   A list of rewrite rules that are applied to incoming requests. Each element of
   the list should be a string value compatible with the format of ``nginx``
@@ @@ -1641,6 +1648,8 @@ running a bare Django project): @@
         background_colour: "green"
         text_colour: "black"
         text: "TEST ENVIRONMENT"
       proxy_headers:
         Accept-Encoding: '""'
 Database Server

docs/usage.rst

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@@ @@ -1485,6 +1485,8 @@ on the safe side: @@
 * If you ever need to set some environment variables, this can easily be done
   via the ``environment_variables`` role parameter. This particular example does
   not set any, though.
 * You can also specify headers to be passed on via Nginx ``proxy_set_header``
   directive to Gunicorn running the application.
 * Mails deliverd to local admin/application users are forwarded to ``root``
   account instead (this can be configured via ``website_mail_recipients`` role
   parameter.

roles/wsgi_website/defaults/main.yml

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 gunicorn_version: "19.6.0"
 futures_version: "3.0.5"
 website_mail_recipients: "root"
 environment_indicator: null
@@ \ No newline at end of file @@
 environment_indicator: null
 proxy_headers: {}

roles/wsgi_website/templates/nginx_site.j2

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@@ @@ -63,6 +63,10 @@ server { @@
         proxy_set_header Host $http_host;
         proxy_redirect off;
     {% for header, value in proxy_headers.iteritems() -%}
     proxy_set_header {{ header }} {{ value }};
     {% endfor -%}
         proxy_pass http://unix:/run/wsgi/{{ fqdn }}.sock;
+    }

testsite/group_vars/web.yml

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@@ @@ -20,4 +20,7 @@ website_mail_recipients: "john.doe@example.com" @@
 environment_indicator:
   background_colour: "purple"
   text_colour: "white"
   text: "Majic Ansible Roles Test Site"
@@ \ No newline at end of file @@
   text: "Majic Ansible Roles Test Site"
 proxy_headers:
   Accept-Encoding: '"gzip"'

testsite/playbooks/roles/wsgihello/files/hello.wsgi

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@@ @@ -14,10 +14,12 @@ def application(environ, start_response): @@
   <body>
     <h1>Hello, world!</h1>
     <p>I am website {title}</p>
     <p>Accept-Encoding header was set to {acceptencoding}</p>
   </body>
 </html>
 """
     output = template.format(title=os.environ.get("WEBSITE_NAME", "that nobody set a name for :("))
     output = template.format(title=os.environ.get("WEBSITE_NAME", "that nobody set a name for :("),
                              acceptencoding=environ.get("HTTP_ACCEPT_ENCODING"))
     response_headers = [('Content-type', 'text/html'),
                         ('Content-Length', str(len(output)))]

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