making it possible to add volumes to the docker section of the project file

modules/docker.py

@@ -122,6 +122,15 @@ def generate():
     context['database_pass'] = configuration.server.database.admin.password
     context['database_name'] = configuration.server.database.name
 
+    if hasattr(configuration.docker.database, 'volumes') and \
+       hasattr(configuration.docker.database.volumes, 'data'):
+
+        context['docker_volume_data_external'] = \
+            configuration.docker.database.volumes.data.external
+
+        context['docker_volume_data_internal'] = \
+            configuration.docker.database.volumes.data.internal
+
     if env.debug:
         for key in context.keys():
             logger.debug("context[{key}] : {value}".format(

modules/initialize.py

@@ -989,6 +989,60 @@ def _init_docker(configuration, layout, config):
                 configuration.docker.database.container_name = \
                     config['docker']['database']['name']
 
+            #
+            # if the project file contains a 'volumes' reference it means
+            # that we are using an external directory to store data
+            #
+            # normally this will be generated, ie there is no 'paths' keys
+            # under 'volumes.data', but if 'paths' is specified, then we
+            # will look for an 'external' and 'internal' paths to apply
+
+            if 'volumes' in config['docker']['database'] and \
+               'data' in config['docker']['database']['volumes']:
+
+                configuration.docker.database.addbranch("volumes")
+                configuration.docker.database.volumes.addbranch("data")
+
+                configuration.docker.database.volumes.data.internal = \
+                    "/var/lib/postgresql/data"
+
+                workingdir = "{root}/{projectname}/{branch}".format(
+                    root=config['project']['paths']['root'],
+                    projectname=config['project']['name'],
+                    branch=config['project']['branch'])
+
+                varlocation = "/var/%s/data" % config[
+                    'docker']['database']['image']
+
+                configuration.docker.database.volumes.data.external = \
+                    "{workingdir}{varlocation}".format(
+                            workingdir=workingdir,
+                            varlocation=varlocation)
+#                    "/home/website/ronnyabraham/staging/var/postgresql/data"
+
+                #
+                # to make it a bit easier to read I'm referencing the part
+                # of the config dictioanry we are using
+
+                docker_volume = config['docker']['database']['volumes']
+                docker_volume_data = docker_volume['data']
+
+                #
+                # if external and internal paths were specified, then we will
+                # use that instead
+
+                if docker_volume_data is not None and \
+                   type(docker_volume_data) is dict and \
+                   'paths' in docker_volume_data:
+
+                    if 'external' in docker_volume_data['paths']:
+                        configuration.docker.database.volumes.data.external = \
+                                docker_volume_data['paths']['external']
+
+                    if 'internal' in docker_volume_data['paths']:
+                        configuration.docker.database.volumes.data.internal = \
+                                docker_volume_data['paths']['internal']
+
             #
             # not sure what "service name" is for
             configuration.docker.database.service_name = \

share/templates/conf/docker/files/database.jinja2

@@ -13,3 +13,10 @@ services:
       {{ docker_database_env_db }} : "{{ database_name }}"
   
     container_name: {{ docker_container_name }}
+
+    {%- if docker_volume_data_external is defined %}
+      {% if docker_volume_data_internal is defined %}
+    volumes:
+      - {{ docker_volume_data_external }}:{{ docker_volume_data_internal }}
+      {% endif %}
+    {% endif %}