Merge pull request #278 from netmanagers/master

feat(servers_config): add require statement to manage dependencies

kitchen.yml

 suites:
   - name: default
     provisioner:
+      dependencies:
+        - name: test_dep
+          path: test/salt/default/states
       state_top:
         base:
           '*':
+            - test_dep.create_dependency_file
             - nginx._mapdata
             - nginx
       pillars:

nginx/config.sls

     - context:
         config: {{ nginx.server.config|json(sort_keys=False) }}
 {% endif %}
-{% if nginx.check_config_before_apply %}
-    - check_cmd: /usr/sbin/nginx -t -c
-{% endif %}

nginx/servers_config.sls

       }}
     - makedirs: True
     - template: jinja
+      {%- if 'requires' in settings %}
+    - require:
+        {%- for k, v in settings.requires.items() %}
+      - {{ k }}: {{ v }}
+        {%- endfor %}
+      {%- endif %}
 {% if 'source_path' not in settings.config %}
     - context:
         config: {{ settings.config|json(sort_keys=False) }}

nginx/service.sls

       {% else %}
       - pkg: nginx_install
       {% endif %}
+{% if nginx.check_config_before_apply %}
+    - only_if: /usr/sbin/nginx -t
+{% endif %}

pillar.example

         # and None indicates no action
         enabled: true
 
+        # This let's you add dependencies on other resources being applied for a
+        # particular vhost
+        # A common case is when you use this formula together with letsencrypt's,
+        # validating through nginx: you need nginx running (to validate the vhost) but
+        # can't have the ssl vhost up until the certificate is created (because it
+        # won't exist and will make nginx fail to load the configuration)
+        #
+        # An example, when using LE to create the cert for 'some.host.domain':
+        # requires:
+        #   cmd: create-initial-cert-some.host.domain
+        requires: {}
+
         # Remove the site config file shipped by nginx
         # (i.e. '/etc/nginx/sites-available/default' by default)
         # It also remove the symlink (if it is exists).

test/integration/default/controls/config.rb

       its('content') { should include 'try_files $uri $uri/ =404;' }
       its('content') { should include 'include snippets/letsencrypt.conf;' }
     end
+    describe file "#{dir}/mysite_with_require" do
+      it { should be_file }
+      it { should be_owned_by file_owner }
+      it { should be_grouped_into file_group }
+      its('mode') { should cmp '0644' }
+      its('content') { should include 'server_name with-deps;' }
+      its('content') { should include 'listen 80;' }
+      its('content') { should include 'index index.html index.htm;' }
+      its('content') { should include 'location ~ .htm {' }
+      its('content') { should include 'try_files $uri $uri/ =404;' }
+    end
   end
 end

test/integration/default/controls/file.rb

+# frozen_string_literal: true
+
+control 'Dependency test file' do
+  title 'should exist'
+
+  describe file('/tmp/created_to_test_dependencies') do
+    it { should be_file }
+  end
+end

test/salt/default/pillar/nginx.sls

               - location ~ .htm:
                   - try_files: '$uri $uri/ =404'
               - include: 'snippets/letsencrypt.conf'
+      mysite_with_require:
+        enabled: true
+        config:
+          - server:
+              - server_name: with-deps
+              - listen:
+                  - '80'
+              - index: 'index.html index.htm'
+              - location ~ .htm:
+                  - try_files: '$uri $uri/ =404'
+        requires:
+          file: created_to_test_dependencies
+
   dh_param:
     'mydhparam2.pem':
       keysize: 2048

test/salt/default/states/test_dep/create_dependency_file.sls

+## this state creates a file that is used to test vhosts dependencies
+# (see https://github.com/saltstack-formulas/nginx-formula/pull/278)
+
+created_to_test_dependencies:
+  file.managed:
+    - name: /tmp/created_to_test_dependencies

test/salt/passenger/pillar/nginx.sls

       - location ^~ /.well-known/acme-challenge/:
           - proxy_pass: http://localhost:9999
   server:
-
     config:
       # This is required to get the passenger module loaded
       # In Debian it can be done with this
               - index: 'index.html index.htm'
               - location ~ .htm:
                   - try_files: '$uri $uri/ =404'
-              # - include: '/etc/nginx/snippets/letsencrypt.conf'
-              - include: 'snippets/letsencrypt.conf'
+              - include: '/etc/nginx/snippets/letsencrypt.conf'