caddy-frontend: Dependencies on instances

Create caddyprofiledeps egg with dummy noop recipe.

Thanks to setting dependencies of this egg and enabling it on the instance
profile, buildout will install eggs during software run and activate them
during instance run.

No existing egg (like slapos.cookbook) is used, as this technique is to allow
profile/software release developer to choose required eggs used during
instantiation.

Another apporach would be to add dependency for validators in
slapos.recipe.template (in install_requires).

software/caddy-frontend/buildout.hash.cfg

@@ -30,7 +30,7 @@ md5sum = 1cf98844e5daf75a74514dbb292d6506
 
 [template-slave-list]
 filename = templates/apache-custom-slave-list.cfg.in
-md5sum = 8c34edd339b668ba4b8f5afcfca2f32d
+md5sum = c57a982d18cf7f36f5d34b80738ea726
 
 [template-slave-configuration]
 filename = templates/custom-virtualhost.conf.in
@@ -46,7 +46,7 @@ md5sum = 7c987ad75fcce6f5b925c7696ff41971
 
 [template-custom-slave-list]
 filename = templates/apache-custom-slave-list.cfg.in
-md5sum = 8c34edd339b668ba4b8f5afcfca2f32d
+md5sum = c57a982d18cf7f36f5d34b80738ea726
 
 [caddy-backend-url-validator]
 filename = templates/caddy-backend-url-validator.in
@@ -103,3 +103,11 @@ md5sum = ebe5d3d19923eb812a40019cb11276d8
 [template-caddy-graceful-script]
 filename = templates/caddy-graceful-script.sh.in
 md5sum = 455f8765a3afd39fb78562fb9e326c42
+
+[caddyprofiledeps-setup]
+filename = setup.py
+md5sum = a81c679f9ce3c9c905b10de9203aad61
+
+[caddyprofiledeps-dummy]
+filename = caddyprofiledummy.py
+md5sum = 38792c2dceae38ab411592ec36fff6a8

software/caddy-frontend/caddyprofiledummy.py

+class Recipe(object):
+  def __init__(self, *args, **kwargs):
+    pass
+
+  def install(self):
+    return []
+
+  def update(self):
+    return self.install()

software/caddy-frontend/common.cfg

@@ -27,6 +27,36 @@ parts +=
   npm-modules
   proxy-by-url
   http-proxy
+  caddyprofiledeps
+
+[caddyprofiledeps-setup]
+recipe = slapos.recipe.build:download
+url = ${:_profile_base_location_}/setup.py
+
+[caddyprofiledeps-dummy]
+recipe = slapos.recipe.build:download
+url = ${:_profile_base_location_}/caddyprofiledummy.py
+
+[caddyprofiledeps-prepare]
+recipe = plone.recipe.command
+stop-on-error = True
+location = ${buildout:parts-directory}/${:_buildout_section_name_}
+update-command = ${:command}
+command =
+  rm -fr ${:location} &&
+  mkdir -p ${:location} &&
+  cp ${caddyprofiledeps-setup:target} ${:location}/ &&
+  cp ${caddyprofiledeps-dummy:target} ${:location}/
+
+[caddyprofiledeps-develop]
+recipe = zc.recipe.egg:develop
+setup = ${caddyprofiledeps-prepare:location}
+
+[caddyprofiledeps]
+depends = ${caddyprofiledeps-develop:recipe}
+recipe = zc.recipe.egg
+eggs =
+  caddyprofiledeps
 
 # Extent extra-eggs.
 [extra-eggs]

software/caddy-frontend/setup.py

+# The caddyprofiledeps egg allows to set dependecies of the Caddy profiles
+# which are enabled during the instance run, thanks to using caddyprofiledeps
+# recipe
+
+from setuptools import setup
+setup(
+  name='caddyprofiledeps',
+  install_requires=[
+  ],
+  entry_points={
+    'zc.buildout': [
+      'default = caddyprofiledummy:Recipe',
+    ]
+  }
+)