Changeset 6645

Timestamp:

Jan 29, 2009, 7:34:45 PM (16 years ago)

Author:

maarten

Message:

Parents directive is searched with NetworkX
Last commit for nagios config. Nagios code will move to separate app

Location:

trunk/exodus

Files:

• settings.py (modified) (1 diff)
• templates/nagios/object.nagios (modified) (1 diff)
• templates/viewNagios.html (modified) (1 diff)
• templatetags/location.py (modified) (2 diffs)
• urls.py (modified) (1 diff)
• views.py (modified) (2 diffs)

trunk/exodus/settings.py

@@ -21 +21 @@
 # AP subnet size
 AP_NETMASK = 26
-
-
+# Graph for network
+try:
+    import networkx as nx
+    G = nx.Graph()
+except:
+    G = 'no_networkx'
 # Master super path, set to current working path
 EXODUS_ROOT =  os.path.dirname(__file__)

trunk/exodus/templates/nagios/object.nagios

@@ -12 +12 @@
     icon_image_alt Node {{ node.name }}
     statusmap_image nodes.gd2
-}
+{% ifnotequal viewpoint 'none' %}    parents {{ node.name|getParents:viewpoint }}{% else %}}{% endifnotequal %}
+{% ifnotequal viewpoint 'none' %}}{% endifnotequal %}

trunk/exodus/templates/viewNagios.html

@@ -6 +6 @@
         <table border="3" cellpadding="1">
                 <tr>
+            <td colspan=2>
+            If you have installed <a href=http://networkx.lanl.gov/>networkx</a> the parent directive can be rendered<br/>
+            Currently no monitor is added to the exodus database so the monitor parameter is set<br/>
+            to a node viewpoint.<br/>
+            This is the last commit for nagios until the new build environment/addon structure for<br/>
+            exodus is defined...<br/><br/>
+            example usage: view/nagios/AZC/exodus.cfg<br/>
+            searches for parent dependencies between each node and AZC<br/>
+            </td>
+        </tr>
+        <tr>
                         <td class="list" >Full nagios config from exodus</td>
                         <td class="list" ><a class="list" href="{% url exodus.views.viewNagios %}">exodus.cfg</a></td>

trunk/exodus/templatetags/location.py

@@ -1 +1 @@
 from django import template
 from django.template.defaultfilters import stringfilter
+
+from exodus.settings import G
+if G != 'no_networkx':
+    from networkx import shortest_path
 
 register = template.Library()
@@ -10 +14 @@
 
 register.filter('getLocationName', getLocationName)
+
+def getParents(node,viewpoint):
+    if G != 'no_networkx':
+        route = shortest_path(G,viewpoint,node)
+        parents = [viewpoint]
+        if route and len(route) > 2:
+            for hop in route:
+                if hop != node and hop != viewpoint:
+                    bakhop = G.neighbors(hop)
+                    G.remove_node(hop)
+                    if not shortest_path(G,viewpoint,node):
+                        parents.append(hop)
+                    for link in bakhop:
+                        G.add_edge(hop,link)
+        return ' '.join(parents)
+    else:
+        return viewpoint
+register.filter('getParents', getParents)

trunk/exodus/urls.py

@@ -29 +29 @@
     url(r'^view/nagios/$', 'exodus.urls.direct_to_template', {'template': 'viewNagios.html'}, "nagios"),
     (r'^view/nagios/exodus.cfg$', 'exodus.views.viewNagios'),
+    (r'^view/nagios/(?P<monitor>.+)/exodus.cfg$', 'exodus.views.viewNagios'),
     
     # 3th party/embedded database browser

trunk/exodus/views.py

@@ -9 +9 @@
 
 from exodus.models import Node, Network, Location
+from exodus.settings import G
 
 # Views
@@ -76 +77 @@
             mimetype='text/plain')
 
-def viewNagios(request):
+def viewNagios(request, monitor='none'):
     nodes = Node.objects.all()
     networks = Network.objects.all()
     locations = Location.objects.all()
-    return render_to_response('nagios/exodus.cfg', {'nodes' : nodes, 'networks' : networks, 'locations' : locations}, mimetype='text/plain')
+    #TODO monitors should be added to exodus (static hosts)
+    # to get the viewpoint of the monitor
+    #viewpoint = DhcpStatic.objects.filter(hostname=monitor).accespoint.node.name
+    # for demo purpose the viewpoint is set to the monitor
+    viewpoint=monitor
+    # check if networkx is available
+    if G == 'no_networkx':
+        monitor = 'none'
+        print 'Networkx is not available'
+    #only if monitor is set create a graph to work with
+    if monitor != 'none':
+        G.clear
+        for node in Node.objects.all():
+            if node.status == 'up':
+                    G.add_node(node.name)
+                    for interface in node.interface_set.all():
+                        if interface.mode == 'mn' and interface.link.node.status == 'up':
+                            G.add_edge(node.name,interface.link.node.name)
+    
+    return render_to_response('nagios/exodus.cfg', {'nodes' : nodes, 'networks' : networks, 'locations' : locations, 'viewpoint' : viewpoint}, mimetype='text/plain')