Formula reset to specific refs (example: Gerrit review)

README.rst

           engine: pip
           version: 2016.3.0rc2
 
+Salt master with specified formula to install through apt-get
+
+.. code-block:: yaml
+
+    salt:
+      master:
+        enabled: true
+        ...
+        environment:
+          prd:
+            keysone:
+              source: pkg
+              name: salt-formula-keystone
+
+Clone master branch of keystone formula as local feature branch
+
+.. code-block:: yaml
+
+    salt:
+      master:
+        enabled: true
+        ...
+        environment:
+          dev:
+            formula:
+              keystone:
+                source: git
+                address: git@github.com:openstack/salt-formula-keystone.git
+                revision: master
+                branch: feature
+
+Salt master with specified formula refs (for example for Gerrit review)
+
+.. code-block:: yaml
+
+    salt:
+      master:
+        enabled: true
+        ...
+        environment:
+          dev:
+            formula:
+              keystone:
+                source: git
+                address: https://git.openstack.org/openstack/salt-formula-keystone
+                revision: refs/changes/56/123456/1
+
 Salt master syndicate master of masters
 
 .. code-block:: yaml

salt/master/env.sls

   git.latest:
   - name: {{ formula.address }}
   - target: /usr/share/salt-formulas/env/_formulas/{{ formula_name }}
-  - rev: {{ formula.revision }}
+  {% if formula.get("revision", "").split("/")[0] == "refs" %}
+  - rev: {{ formula.branch|default("master") }}
+  {%- if grains['saltversion'] < "2015.8.0" %}
+  - branch: {{ formula.branch|default("master") }}
+  {%- endif %}
+  {% else %}
+  - rev: {{ formula.revision|default(formula.branch) }}
+  {%- if grains['saltversion'] < "2015.8.0" %}
+  - branch: {{ formula.branch|default(formula.revision) }}
+  {%- endif %}
+  {% endif %}
+  - force_reset: {{ formula.force_reset|default(False) }}
   - require:
     - file: salt_env_{{ environment_name }}_dirs
     - pkg: git_packages
 
+{%- if formula.get("revision", "").split("/")[0] == "refs" %}
+
+salt_master_{{ environment_name }}_{{ formula_name }}_formula_refs_workaround_fetch:
+  module.run:
+  - name: git.fetch
+  - cwd: /usr/share/salt-formulas/env/_formulas/{{ formula_name }}
+  - opts: {{ formula.address }} {{ formula.revision }}
+  - require: 
+    - git: salt_master_{{ environment_name }}_{{ formula_name }}_formula
+
+salt_master_{{ environment_name }}_{{ formula_name }}_formula_refs_workaround_reset:
+  module.run:
+  - name: git.reset
+  - cwd: /usr/share/salt-formulas/env/_formulas/{{ formula_name }}
+  - opts: --hard FETCH_HEAD
+  - require:
+    - module: salt_master_{{ environment_name }}_{{ formula_name }}_formula_refs_workaround_fetch
+
+salt_master_{{ environment_name }}_{{ formula_name }}_formula_refs_workaround_rebase:
+  module.run:
+  - name: git.rebase
+  - cwd: /usr/share/salt-formulas/env/_formulas/{{ formula_name }}
+  - rev: origin/{{ formula.branch|default("master") }}
+  - require:
+    - module: salt_master_{{ environment_name }}_{{ formula_name }}_formula_refs_workaround_reset
+
+{%- endif %}
+
 salt_env_{{ environment_name }}_{{ formula_name }}_link:
   file.symlink:
   - name: /usr/share/salt-formulas/env/{{ formula_name }}
 
 {# end new #}
 
-{%- endif %}
+{%- endif %}
+