add handling "site" tag and additional retrieve permissions

note that this needs krischer/django-plugins#11 to work

Author: megies

src/jane/quakeml/plugins.py

@@ -83,6 +83,94 @@ def filter_queryset_user_does_not_have_permission(self, queryset,
         return queryset
 
 
+def _site_magnitude_threshold_retrieve_permission(
+        class_name, magnitude_threshold, site=None):
+    """
+    Class factory that returns a quakeml retrieve permission based on a
+    magnitude threshold, optionally only working on a specific site.
+    If multiple of these restrictions are defined, all of them apply separately
+    and the user must have all of them set, down to the lowest threshold
+    restriction that is supposed to apply.
+    """
+    class _SiteMagnitudeThresholdRetrievePermissionPlugin(
+            RetrievePermissionPluginPoint):
+        """
+        If user does not have this permission, any events below given magnitude
+        threshold are filtered out (optionally only for a specific site).
+        """
+        name = 'quakeml'
+        title = 'Can See Magnitude <{} Events {}Permission'.format(
+            magnitude_threshold, site and "At site='{}' ".format(site) or "")
+
+        # Permission codename and name according to Django's nomenclature.
+        # XXX no idea if dots are allowed in codename, so replace them
+        permission_codename = 'can_see_mag_lessthan_{}_site_{}_events'.format(
+            magnitude_threshold, site or "any").replace(".", "_")
+        permission_name = 'Can See Magnitude <{} Events{}'.format(
+            magnitude_threshold, site and " At site='{}'".format(site) or "")
+
+        def filter_queryset_user_has_permission(self, queryset, model_type):
+            # If the user has the permission: don't restrict queryset.
+            return queryset
+
+        def filter_queryset_user_does_not_have_permission(self, queryset,
+                                                          model_type):
+            # model_type can be document or document index.
+            if model_type == "document":
+                # XXX: Find a good way to do this.
+                raise NotImplementedError()
+            elif model_type == "index":
+                # Modify the queryset to only contain indices that are above
+                # given magnitude threshold.
+                # XXX check what happens with events that have null for
+                # XXX magnitude..
+                kwargs = {}
+                # if no site is specified, just do a normal filter by magnitude
+                # threshold
+                if site is None:
+                    kwargs["min_magnitude"] = magnitude_threshold
+                    negate = False
+                # if site is specified, we need to search for events matching
+                # both criteria and then invert the resulting queryset
+                else:
+                    kwargs['site'] = site
+                    kwargs["max_magnitude"] = magnitude_threshold - 0.01
+                    negate = True
+                queryset = queryset.model.objects.get_filtered_queryset(
+                    document_type="quakeml", queryset=queryset, negate=negate,
+                    **kwargs)
+            else:
+                raise NotImplementedError()
+            return queryset
+
+    new_class = _SiteMagnitudeThresholdRetrievePermissionPlugin
+    # Set the class type name.
+    setattr(new_class, "__name__", class_name)
+    return new_class
+
+
+# Retrieve permissions for small events, if users don't have these permissions
+# small events are not accessible to them
+MagnitudeLessThan1RetrievePermissionPlugin = \
+    _site_magnitude_threshold_retrieve_permission(
+        "MagnitudeLessThan1RetrievePermissionPlugin", magnitude_threshold=1.0)
+MagnitudeLessThan2RetrievePermissionPlugin = \
+    _site_magnitude_threshold_retrieve_permission(
+        "MagnitudeLessThan2RetrievePermissionPlugin", magnitude_threshold=2.0)
+
+# Retrieve permissions for small events attributed to a specific site (e.g. a
+# specific deep geothermal project), if users don't have these permissions
+# small events that are attributed to that site are not accessible to them
+UnterhachingLessThan1RetrievePermissionPlugin = \
+    _site_magnitude_threshold_retrieve_permission(
+        "UnterhachingLessThan1RetrievePermissionPlugin",
+        magnitude_threshold=1.0, site="geothermie_unterhaching")
+UnterhachingLessThan2RetrievePermissionPlugin = \
+    _site_magnitude_threshold_retrieve_permission(
+        "UnterhachingLessThan2RetrievePermissionPlugin",
+        magnitude_threshold=2.0, site="geothermie_unterhaching")
+
+
 class QuakeMLIndexerPlugin(IndexerPluginPoint):
     """
     Each document type can have one indexer.
@@ -114,7 +202,8 @@ class QuakeMLIndexerPlugin(IndexerPluginPoint):
         "author": "str",
         "public": "bool",
         "evaluation_mode": "str",
-        "event_type": "str"
+        "event_type": "str",
+        "site": "str",
     }
 
     def index(self, document):
@@ -160,6 +249,10 @@ def index(self, document):
                 evaluation_mode = extra["evaluationMode"]["value"]
             else:
                 evaluation_mode = None
+            if "site" in extra:
+                site = extra["site"]["value"]
+            else:
+                site = None
 
             indices.append({
                 "quakeml_id": str(event.resource_id),
@@ -181,6 +274,7 @@ def index(self, document):
                 # fast queries using PostGIS.
                 "geometry":
                     [Point(org.longitude, org.latitude)] if org else None,
+                "site": site,
             })
 
         return indices

src/jane/static/web_gis/src/directives/map.js

@@ -482,9 +482,14 @@ app.directive('openlayers3', function($q, $log, bing_key, $modal) {
                             public = "not specified"
                         }
 
+                        var site = feature.get("site");
+                        if (site == null) {
+                            site = "not specified"
+                        }
+
                         tooltip_title += "\nAgency: " + feature.get("agency") +
                             " | Author: " + author + " | Evaluation mode: " + evaluation_mode +
-                            " | Public: " + public;
+                            " | Public: " + public + " | Site: " + site;
 
                         if (feature.get('magnitude')) {
 
@@ -561,6 +566,7 @@ app.directive('openlayers3', function($q, $log, bing_key, $modal) {
                         modal.$scope.magnitude_type = feature.get("magnitude_type");
                         modal.$scope.origin_time = feature.get("origin_time");
                         modal.$scope.public = feature.get("public");
+                        modal.$scope.site = feature.get("site");
                         modal.$scope.quakeml_id = feature.get("quakeml_id");
 
 

src/jane/static/web_gis/templates/event_modal.tpl.html

@@ -29,6 +29,8 @@ <h4 class="modal-title">Details for event {{title}}</h4>
                           <dd>{{ evaluation_mode }}</dd>
                           <dt>Public</dt>
                           <dd>{{ public }}</dd>
+                          <dt>Site</dt>
+                          <dd>{{ site }}</dd>
                         </dl>
                     </div>
                     <div class="row">