Add django 1.0 reports support (with backwards compatibility)

git-svn-id: https://svn.mcs.anl.gov/repos/bcfg/trunk/bcfg2@4952 ce84e21b-d406-0410-9b95-82705330c041

3 files changed, 531 insertions, 262 deletions

diff --git a/src/lib/Server/Reports/reports/models.py b/src/lib/Server/Reports/reports/models.py
index a45fb0d30..015562908 100644
--- a/src/lib/Server/Reports/reports/models.py
+++ b/src/lib/Server/Reports/reports/models.py
@@ -1,263 +1,6 @@
-'''Django models for BCFG reports'''
-from django.db import models
-from django.db.models import Q
-from datetime import datetime, timedelta
-from time import strptime
+import django
 
-KIND_CHOICES = (
-    #These are the kinds of config elements
-    ('ConfigFile', 'ConfigFile'),
-    ('Package', 'Package'),
-    ('Service', 'Service'),
-    ('SymLink', 'SymLink'),
-    ('Directory', 'Directory'),
-    ('Permissions','Permissions'),
-)
-PING_CHOICES = (
-    #These are possible ping states
-    ('Up (Y)', 'Y'),
-    ('Down (N)', 'N')
-)
-TYPE_BAD = 1
-TYPE_MODIFIED = 2
-TYPE_EXTRA = 3
-
-TYPE_CHOICES = (
-    (TYPE_BAD, 'Bad'),
-    (TYPE_MODIFIED, 'Modified'),
-    (TYPE_EXTRA, 'Extra'),
-)
-class ClientManager(models.Manager):
-    '''extended client manager functions'''
-    def active(self, timestamp='now'):
-        '''returns a set of clients that have been created and have not yet been
-        expired as of optional timestmamp argument. Timestamp should be a
-        string formatted in the fashion: 2006-01-01 00:00:00'''
-        
-        if timestamp == 'now':
-            timestamp = datetime.now()
-        else:
-            print timestamp
-            try:
-                timestamp = datetime(*strptime(timestamp, "%Y-%m-%d %H:%M:%S")[0:6])
-            except ValueError:
-                return self.filter(expiration__lt=timestamp, creation__gt=timestamp);
-                '''
-                - this is a really hacky way to return an empty QuerySet
-                - this should return Client.objects.none() in Django
-                  development version.
-                '''
-        
-        return self.filter(Q(expiration__gt=timestamp) | Q(expiration__isnull=True),
-                           creation__lt=timestamp)
-
-
-class Client(models.Model):
-    '''object representing every client we have seen stats for'''
-    creation = models.DateTimeField()
-    name = models.CharField(maxlength=128, core=True)
-    current_interaction = models.ForeignKey('Interaction',
-                                            null=True, blank=True,
-                                            related_name="parent_client")
-    expiration = models.DateTimeField(blank=True, null=True)
-    
-    def __str__(self):
-        return self.name
-
-    objects = ClientManager()
-    
-    class Admin:
-        pass
-
-class Ping(models.Model):
-    '''represents a ping of a client (sparsely)'''
-    client = models.ForeignKey(Client, related_name="pings")
-    starttime = models.DateTimeField()
-    endtime = models.DateTimeField()
-    status = models.CharField(maxlength=4, choices=PING_CHOICES)#up/down
-
-    class Meta:
-        get_latest_by = 'endtime'
-    
-class InteractiveManager(models.Manager):
-    '''manages interactions objects'''
-    
-    '''returns most recent interaction as of specified timestamp in format:
-    '2006-01-01 00:00:00' or 'now' or None->'now'  '''
-    def interaction_per_client(self, maxdate = None):
-        from django.db import connection
-        cursor = connection.cursor()
-
-        #in order to prevent traceback when zero records are returned.
-        #this could mask some database errors
-        try:
-            if (maxdate == 'now' or maxdate == None):
-                cursor.execute("select reports_interaction.id, x.client_id from (select client_id, MAX(timestamp) "+
-                    "as timer from reports_interaction GROUP BY client_id) x, reports_interaction where "+
-                    "reports_interaction.client_id = x.client_id AND reports_interaction.timestamp = x.timer")
-            else:
-                cursor.execute("select reports_interaction.id, x.client_id from (select client_id, timestamp, MAX(timestamp) "+
-                    "as timer from reports_interaction WHERE timestamp < %s GROUP BY client_id) x, reports_interaction where "+
-                    "reports_interaction.client_id = x.client_id AND reports_interaction.timestamp = x.timer",
-                               [maxdate])
-            in_idents = [item[0] for item in cursor.fetchall()]
-        except:
-            in_idents = []
-        return self.filter(id__in = in_idents)
-
-
-class Interaction(models.Model):
-    '''Models each reconfiguration operation interaction between client and server'''
-    client = models.ForeignKey(Client, related_name="interactions", core=True)
-    timestamp = models.DateTimeField()#Timestamp for this record
-    state = models.CharField(maxlength=32)#good/bad/modified/etc
-    repo_revision = models.IntegerField()#repo revision at time of interaction
-    client_version = models.CharField(maxlength=32)#Client Version
-    goodcount = models.IntegerField()#of good config-items
-    totalcount = models.IntegerField()#of total config-items
-    server = models.CharField(maxlength=256)    # Name of the server used for the interaction
-
-    def __str__(self):
-        return "With " + self.client.name + " @ " + self.timestamp.isoformat()
-
-    def percentgood(self):
-        if not self.totalcount == 0:
-            return (self.goodcount/float(self.totalcount))*100
-        else:
-            return 0
-
-    def percentbad(self):
-        if not self.totalcount == 0:
-            return ((self.totalcount-self.goodcount)/(float(self.totalcount)))*100
-        else:
-            return 0
-    
-    def isclean(self):
-        if (self.bad().count() == 0 and self.goodcount == self.totalcount):
-        #if (self.state == "good"):
-            return True
-        else:
-            return False
-        
-    def isstale(self):
-        if (self == self.client.current_interaction):#Is Mostrecent
-            if(datetime.now()-self.timestamp > timedelta(hours=25) ):
-                return True
-            else:
-                return False
-        else:
-            #Search for subsequent Interaction for this client
-            #Check if it happened more than 25 hrs ago.
-            if (self.client.interactions.filter(timestamp__gt=self.timestamp)
-                    .order_by('timestamp')[0].timestamp -
-                    self.timestamp > timedelta(hours=25)):
-                return True
-            else:
-                return False
-    def save(self):
-        super(Interaction, self).save() #call the real save...
-        self.client.current_interaction = self.client.interactions.latest()
-        self.client.save()#save again post update
-
-    def bad(self):
-        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_BAD)
-
-    def modified(self):
-        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_MODIFIED)
-
-    def extra(self):
-        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_EXTRA)
-    
-    objects = InteractiveManager()
-
-    class Admin:
-        list_display = ('client', 'timestamp', 'state')
-        list_filter = ['client', 'timestamp']
-        pass
-    class Meta:
-        get_latest_by = 'timestamp'
-
-class Reason(models.Model):
-    '''reason why modified or bad entry did not verify, or changed'''
-    owner = models.TextField(maxlength=128, blank=True)
-    current_owner = models.TextField(maxlength=128, blank=True)
-    group = models.TextField(maxlength=128, blank=True)
-    current_group = models.TextField(maxlength=128, blank=True)
-    perms =  models.TextField(maxlength=4, blank=True)#txt fixes typing issue
-    current_perms = models.TextField(maxlength=4, blank=True)
-    status = models.TextField(maxlength=3, blank=True)#on/off/(None)
-    current_status = models.TextField(maxlength=1, blank=True)#on/off/(None)
-    to = models.TextField(maxlength=256, blank=True)
-    current_to = models.TextField(maxlength=256, blank=True)
-    version = models.TextField(maxlength=128, blank=True)
-    current_version = models.TextField(maxlength=128, blank=True)
-    current_exists = models.BooleanField()#False means its missing. Default True
-    current_diff = models.TextField(maxlength=1280, blank=True)
-    def _str_(self):
-        return "Reason"
-
-class Entries(models.Model):
-    """ Contains all the entries feed by the client """
-    name = models.CharField(maxlength=128, core=True, db_index=True)
-    kind = models.CharField(maxlength=16, choices=KIND_CHOICES, db_index=True)
-
-    def __str__(self):
-        return self.name
-
-class Entries_interactions(models.Model):
-    """ Define the relation between the reason, the interaction and the entry """
-    entry = models.ForeignKey(Entries)
-    reason = models.ForeignKey(Reason)
-    interaction = models.ForeignKey(Interaction)
-    type = models.IntegerField(choices=TYPE_CHOICES)
-    
-class PerformanceManager(models.Manager):
-    '''Provides ability to effectively query for performance information
-    It is possible this should move to the view'''
-    #Date format for maxdate: '2006-01-01 00:00:00'            
-    def performance_per_client(self, maxdate = None):
-        from django.db import connection
-        cursor = connection.cursor()
-        if (maxdate == 'now' or maxdate == None):
-            cursor.execute("SELECT reports_client.name, reports_performance.metric, reports_performance.value "+
-            "FROM reports_performance, reports_performance_interaction, reports_client WHERE ( "+
-            "reports_client.current_interaction_id = reports_performance_interaction.interaction_id AND "+
-            "reports_performance.id = reports_performance_interaction.performance_id)")
-        else:
-            cursor.execute("select reports_client.name, reports_performance.metric, "+
-                           "reports_performance.value from (Select reports_interaction.client_id as client_id, "+
-                           "MAX(reports_interaction.timestamp) as timestamp from reports_interaction where "+
-                           "timestamp < %s GROUP BY reports_interaction.client_id) x, reports_client, "+
-                           "reports_interaction, reports_performance, reports_performance_interaction where "+
-                           "reports_client.id = x.client_id AND x.timestamp = reports_interaction.timestamp AND "+
-                           "x.client_id = reports_interaction.client_id AND reports_performance.id = "+
-                           "reports_performance_interaction.performance_id AND "+
-                           "reports_performance_interaction.interaction_id = reports_interaction.id", [maxdate])
-
-        results = {}
-        for row in cursor.fetchall():
-            try:
-                results[row[0]].__setitem__(row[1], row[2])
-            except KeyError:
-                results[row[0]] = {row[1]:row[2]}
-                                
-        return results
-    
-#performance metrics, models a performance-metric-item
-class Performance(models.Model):
-    '''Object representing performance data for any interaction'''
-    interaction = models.ManyToManyField(Interaction, related_name="performance_items")
-    metric = models.CharField(maxlength=128, core=True)
-    value = models.FloatField(max_digits=32, decimal_places=16)
-    def __str__(self):
-        return self.metric
- 
-    objects = PerformanceManager()
- 
-class InternalDatabaseVersion(models.Model):
-    '''Object that tell us to witch version is the database'''
-    version = models.IntegerField()
-    updated = models.DateTimeField(auto_now_add=True)
-
-    def __str__(self):
-        return "version %d updated the %s" % (self.version, self.updated.isoformat())
+if django.VERSION[0] > 0:
+    from models_new import *
+else:
+    from models_old import *
diff --git a/src/lib/Server/Reports/reports/models_new.py b/src/lib/Server/Reports/reports/models_new.py
new file mode 100644
index 000000000..3b1a005da
--- /dev/null
+++ b/src/lib/Server/Reports/reports/models_new.py
@@ -0,0 +1,263 @@
+'''Django models for BCFG reports'''
+from django.db import models
+from django.db.models import Q
+from datetime import datetime, timedelta
+from time import strptime
+
+KIND_CHOICES = (
+    #These are the kinds of config elements
+    ('ConfigFile', 'ConfigFile'),
+    ('Package', 'Package'),
+    ('Service', 'Service'),
+    ('SymLink', 'SymLink'),
+    ('Directory', 'Directory'),
+    ('Permissions','Permissions'),
+)
+PING_CHOICES = (
+    #These are possible ping states
+    ('Up (Y)', 'Y'),
+    ('Down (N)', 'N')
+)
+TYPE_BAD = 1
+TYPE_MODIFIED = 2
+TYPE_EXTRA = 3
+
+TYPE_CHOICES = (
+    (TYPE_BAD, 'Bad'),
+    (TYPE_MODIFIED, 'Modified'),
+    (TYPE_EXTRA, 'Extra'),
+)
+class ClientManager(models.Manager):
+    '''extended client manager functions'''
+    def active(self, timestamp='now'):
+        '''returns a set of clients that have been created and have not yet been
+        expired as of optional timestmamp argument. Timestamp should be a
+        string formatted in the fashion: 2006-01-01 00:00:00'''
+        
+        if timestamp == 'now':
+            timestamp = datetime.now()
+        else:
+            print timestamp
+            try:
+                timestamp = datetime(*strptime(timestamp, "%Y-%m-%d %H:%M:%S")[0:6])
+            except ValueError:
+                return self.filter(expiration__lt=timestamp, creation__gt=timestamp);
+                '''
+                - this is a really hacky way to return an empty QuerySet
+                - this should return Client.objects.none() in Django
+                  development version.
+                '''
+        
+        return self.filter(Q(expiration__gt=timestamp) | Q(expiration__isnull=True),
+                           creation__lt=timestamp)
+
+
+class Client(models.Model):
+    '''object representing every client we have seen stats for'''
+    creation = models.DateTimeField()
+    name = models.CharField(max_length=128,)
+    current_interaction = models.ForeignKey('Interaction',
+                                            null=True, blank=True,
+                                            related_name="parent_client")
+    expiration = models.DateTimeField(blank=True, null=True)
+    
+    def __str__(self):
+        return self.name
+
+    objects = ClientManager()
+    
+    class Admin:
+        pass
+
+class Ping(models.Model):
+    '''represents a ping of a client (sparsely)'''
+    client = models.ForeignKey(Client, related_name="pings")
+    starttime = models.DateTimeField()
+    endtime = models.DateTimeField()
+    status = models.CharField(max_length=4, choices=PING_CHOICES)#up/down
+
+    class Meta:
+        get_latest_by = 'endtime'
+    
+class InteractiveManager(models.Manager):
+    '''manages interactions objects'''
+    
+    '''returns most recent interaction as of specified timestamp in format:
+    '2006-01-01 00:00:00' or 'now' or None->'now'  '''
+    def interaction_per_client(self, maxdate = None):
+        from django.db import connection
+        cursor = connection.cursor()
+
+        #in order to prevent traceback when zero records are returned.
+        #this could mask some database errors
+        try:
+            if (maxdate == 'now' or maxdate == None):
+                cursor.execute("select reports_interaction.id, x.client_id from (select client_id, MAX(timestamp) "+
+                    "as timer from reports_interaction GROUP BY client_id) x, reports_interaction where "+
+                    "reports_interaction.client_id = x.client_id AND reports_interaction.timestamp = x.timer")
+            else:
+                cursor.execute("select reports_interaction.id, x.client_id from (select client_id, timestamp, MAX(timestamp) "+
+                    "as timer from reports_interaction WHERE timestamp < %s GROUP BY client_id) x, reports_interaction where "+
+                    "reports_interaction.client_id = x.client_id AND reports_interaction.timestamp = x.timer",
+                               [maxdate])
+            in_idents = [item[0] for item in cursor.fetchall()]
+        except:
+            in_idents = []
+        return self.filter(id__in = in_idents)
+
+
+class Interaction(models.Model):
+    '''Models each reconfiguration operation interaction between client and server'''
+    client = models.ForeignKey(Client, related_name="interactions",)
+    timestamp = models.DateTimeField()#Timestamp for this record
+    state = models.CharField(max_length=32)#good/bad/modified/etc
+    repo_revision = models.IntegerField()#repo revision at time of interaction
+    client_version = models.CharField(max_length=32)#Client Version
+    goodcount = models.IntegerField()#of good config-items
+    totalcount = models.IntegerField()#of total config-items
+    server = models.CharField(max_length=256)    # Name of the server used for the interaction
+
+    def __str__(self):
+        return "With " + self.client.name + " @ " + self.timestamp.isoformat()
+
+    def percentgood(self):
+        if not self.totalcount == 0:
+            return (self.goodcount/float(self.totalcount))*100
+        else:
+            return 0
+
+    def percentbad(self):
+        if not self.totalcount == 0:
+            return ((self.totalcount-self.goodcount)/(float(self.totalcount)))*100
+        else:
+            return 0
+    
+    def isclean(self):
+        if (self.bad().count() == 0 and self.goodcount == self.totalcount):
+        #if (self.state == "good"):
+            return True
+        else:
+            return False
+        
+    def isstale(self):
+        if (self == self.client.current_interaction):#Is Mostrecent
+            if(datetime.now()-self.timestamp > timedelta(hours=25) ):
+                return True
+            else:
+                return False
+        else:
+            #Search for subsequent Interaction for this client
+            #Check if it happened more than 25 hrs ago.
+            if (self.client.interactions.filter(timestamp__gt=self.timestamp)
+                    .order_by('timestamp')[0].timestamp -
+                    self.timestamp > timedelta(hours=25)):
+                return True
+            else:
+                return False
+    def save(self):
+        super(Interaction, self).save() #call the real save...
+        self.client.current_interaction = self.client.interactions.latest()
+        self.client.save()#save again post update
+
+    def bad(self):
+        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_BAD)
+
+    def modified(self):
+        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_MODIFIED)
+
+    def extra(self):
+        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_EXTRA)
+    
+    objects = InteractiveManager()
+
+    class Admin:
+        list_display = ('client', 'timestamp', 'state')
+        list_filter = ['client', 'timestamp']
+        pass
+    class Meta:
+        get_latest_by = 'timestamp'
+
+class Reason(models.Model):
+    '''reason why modified or bad entry did not verify, or changed'''
+    owner = models.TextField(max_length=128, blank=True)
+    current_owner = models.TextField(max_length=128, blank=True)
+    group = models.TextField(max_length=128, blank=True)
+    current_group = models.TextField(max_length=128, blank=True)
+    perms =  models.TextField(max_length=4, blank=True)#txt fixes typing issue
+    current_perms = models.TextField(max_length=4, blank=True)
+    status = models.TextField(max_length=3, blank=True)#on/off/(None)
+    current_status = models.TextField(max_length=1, blank=True)#on/off/(None)
+    to = models.TextField(max_length=256, blank=True)
+    current_to = models.TextField(max_length=256, blank=True)
+    version = models.TextField(max_length=128, blank=True)
+    current_version = models.TextField(max_length=128, blank=True)
+    current_exists = models.BooleanField()#False means its missing. Default True
+    current_diff = models.TextField(max_length=1280, blank=True)
+    def _str_(self):
+        return "Reason"
+
+class Entries(models.Model):
+    """ Contains all the entries feed by the client """
+    name = models.CharField(max_length=128, db_index=True)
+    kind = models.CharField(max_length=16, choices=KIND_CHOICES, db_index=True)
+
+    def __str__(self):
+        return self.name
+
+class Entries_interactions(models.Model):
+    """ Define the relation between the reason, the interaction and the entry """
+    entry = models.ForeignKey(Entries)
+    reason = models.ForeignKey(Reason)
+    interaction = models.ForeignKey(Interaction)
+    type = models.IntegerField(choices=TYPE_CHOICES)
+    
+class PerformanceManager(models.Manager):
+    '''Provides ability to effectively query for performance information
+    It is possible this should move to the view'''
+    #Date format for maxdate: '2006-01-01 00:00:00'            
+    def performance_per_client(self, maxdate = None):
+        from django.db import connection
+        cursor = connection.cursor()
+        if (maxdate == 'now' or maxdate == None):
+            cursor.execute("SELECT reports_client.name, reports_performance.metric, reports_performance.value "+
+            "FROM reports_performance, reports_performance_interaction, reports_client WHERE ( "+
+            "reports_client.current_interaction_id = reports_performance_interaction.interaction_id AND "+
+            "reports_performance.id = reports_performance_interaction.performance_id)")
+        else:
+            cursor.execute("select reports_client.name, reports_performance.metric, "+
+                           "reports_performance.value from (Select reports_interaction.client_id as client_id, "+
+                           "MAX(reports_interaction.timestamp) as timestamp from reports_interaction where "+
+                           "timestamp < %s GROUP BY reports_interaction.client_id) x, reports_client, "+
+                           "reports_interaction, reports_performance, reports_performance_interaction where "+
+                           "reports_client.id = x.client_id AND x.timestamp = reports_interaction.timestamp AND "+
+                           "x.client_id = reports_interaction.client_id AND reports_performance.id = "+
+                           "reports_performance_interaction.performance_id AND "+
+                           "reports_performance_interaction.interaction_id = reports_interaction.id", [maxdate])
+
+        results = {}
+        for row in cursor.fetchall():
+            try:
+                results[row[0]].__setitem__(row[1], row[2])
+            except KeyError:
+                results[row[0]] = {row[1]:row[2]}
+                                
+        return results
+    
+#performance metrics, models a performance-metric-item
+class Performance(models.Model):
+    '''Object representing performance data for any interaction'''
+    interaction = models.ManyToManyField(Interaction, related_name="performance_items")
+    metric = models.CharField(max_length=128)
+    value = models.DecimalField(max_digits=32, decimal_places=16)
+    def __str__(self):
+        return self.metric
+ 
+    objects = PerformanceManager()
+ 
+class InternalDatabaseVersion(models.Model):
+    '''Object that tell us to witch version is the database'''
+    version = models.IntegerField()
+    updated = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return "version %d updated the %s" % (self.version, self.updated.isoformat())
diff --git a/src/lib/Server/Reports/reports/models_old.py b/src/lib/Server/Reports/reports/models_old.py
new file mode 100644
index 000000000..a45fb0d30
--- /dev/null
+++ b/src/lib/Server/Reports/reports/models_old.py
@@ -0,0 +1,263 @@
+'''Django models for BCFG reports'''
+from django.db import models
+from django.db.models import Q
+from datetime import datetime, timedelta
+from time import strptime
+
+KIND_CHOICES = (
+    #These are the kinds of config elements
+    ('ConfigFile', 'ConfigFile'),
+    ('Package', 'Package'),
+    ('Service', 'Service'),
+    ('SymLink', 'SymLink'),
+    ('Directory', 'Directory'),
+    ('Permissions','Permissions'),
+)
+PING_CHOICES = (
+    #These are possible ping states
+    ('Up (Y)', 'Y'),
+    ('Down (N)', 'N')
+)
+TYPE_BAD = 1
+TYPE_MODIFIED = 2
+TYPE_EXTRA = 3
+
+TYPE_CHOICES = (
+    (TYPE_BAD, 'Bad'),
+    (TYPE_MODIFIED, 'Modified'),
+    (TYPE_EXTRA, 'Extra'),
+)
+class ClientManager(models.Manager):
+    '''extended client manager functions'''
+    def active(self, timestamp='now'):
+        '''returns a set of clients that have been created and have not yet been
+        expired as of optional timestmamp argument. Timestamp should be a
+        string formatted in the fashion: 2006-01-01 00:00:00'''
+        
+        if timestamp == 'now':
+            timestamp = datetime.now()
+        else:
+            print timestamp
+            try:
+                timestamp = datetime(*strptime(timestamp, "%Y-%m-%d %H:%M:%S")[0:6])
+            except ValueError:
+                return self.filter(expiration__lt=timestamp, creation__gt=timestamp);
+                '''
+                - this is a really hacky way to return an empty QuerySet
+                - this should return Client.objects.none() in Django
+                  development version.
+                '''
+        
+        return self.filter(Q(expiration__gt=timestamp) | Q(expiration__isnull=True),
+                           creation__lt=timestamp)
+
+
+class Client(models.Model):
+    '''object representing every client we have seen stats for'''
+    creation = models.DateTimeField()
+    name = models.CharField(maxlength=128, core=True)
+    current_interaction = models.ForeignKey('Interaction',
+                                            null=True, blank=True,
+                                            related_name="parent_client")
+    expiration = models.DateTimeField(blank=True, null=True)
+    
+    def __str__(self):
+        return self.name
+
+    objects = ClientManager()
+    
+    class Admin:
+        pass
+
+class Ping(models.Model):
+    '''represents a ping of a client (sparsely)'''
+    client = models.ForeignKey(Client, related_name="pings")
+    starttime = models.DateTimeField()
+    endtime = models.DateTimeField()
+    status = models.CharField(maxlength=4, choices=PING_CHOICES)#up/down
+
+    class Meta:
+        get_latest_by = 'endtime'
+    
+class InteractiveManager(models.Manager):
+    '''manages interactions objects'''
+    
+    '''returns most recent interaction as of specified timestamp in format:
+    '2006-01-01 00:00:00' or 'now' or None->'now'  '''
+    def interaction_per_client(self, maxdate = None):
+        from django.db import connection
+        cursor = connection.cursor()
+
+        #in order to prevent traceback when zero records are returned.
+        #this could mask some database errors
+        try:
+            if (maxdate == 'now' or maxdate == None):
+                cursor.execute("select reports_interaction.id, x.client_id from (select client_id, MAX(timestamp) "+
+                    "as timer from reports_interaction GROUP BY client_id) x, reports_interaction where "+
+                    "reports_interaction.client_id = x.client_id AND reports_interaction.timestamp = x.timer")
+            else:
+                cursor.execute("select reports_interaction.id, x.client_id from (select client_id, timestamp, MAX(timestamp) "+
+                    "as timer from reports_interaction WHERE timestamp < %s GROUP BY client_id) x, reports_interaction where "+
+                    "reports_interaction.client_id = x.client_id AND reports_interaction.timestamp = x.timer",
+                               [maxdate])
+            in_idents = [item[0] for item in cursor.fetchall()]
+        except:
+            in_idents = []
+        return self.filter(id__in = in_idents)
+
+
+class Interaction(models.Model):
+    '''Models each reconfiguration operation interaction between client and server'''
+    client = models.ForeignKey(Client, related_name="interactions", core=True)
+    timestamp = models.DateTimeField()#Timestamp for this record
+    state = models.CharField(maxlength=32)#good/bad/modified/etc
+    repo_revision = models.IntegerField()#repo revision at time of interaction
+    client_version = models.CharField(maxlength=32)#Client Version
+    goodcount = models.IntegerField()#of good config-items
+    totalcount = models.IntegerField()#of total config-items
+    server = models.CharField(maxlength=256)    # Name of the server used for the interaction
+
+    def __str__(self):
+        return "With " + self.client.name + " @ " + self.timestamp.isoformat()
+
+    def percentgood(self):
+        if not self.totalcount == 0:
+            return (self.goodcount/float(self.totalcount))*100
+        else:
+            return 0
+
+    def percentbad(self):
+        if not self.totalcount == 0:
+            return ((self.totalcount-self.goodcount)/(float(self.totalcount)))*100
+        else:
+            return 0
+    
+    def isclean(self):
+        if (self.bad().count() == 0 and self.goodcount == self.totalcount):
+        #if (self.state == "good"):
+            return True
+        else:
+            return False
+        
+    def isstale(self):
+        if (self == self.client.current_interaction):#Is Mostrecent
+            if(datetime.now()-self.timestamp > timedelta(hours=25) ):
+                return True
+            else:
+                return False
+        else:
+            #Search for subsequent Interaction for this client
+            #Check if it happened more than 25 hrs ago.
+            if (self.client.interactions.filter(timestamp__gt=self.timestamp)
+                    .order_by('timestamp')[0].timestamp -
+                    self.timestamp > timedelta(hours=25)):
+                return True
+            else:
+                return False
+    def save(self):
+        super(Interaction, self).save() #call the real save...
+        self.client.current_interaction = self.client.interactions.latest()
+        self.client.save()#save again post update
+
+    def bad(self):
+        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_BAD)
+
+    def modified(self):
+        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_MODIFIED)
+
+    def extra(self):
+        return Entries_interactions.objects.select_related().filter(interaction=self, type=TYPE_EXTRA)
+    
+    objects = InteractiveManager()
+
+    class Admin:
+        list_display = ('client', 'timestamp', 'state')
+        list_filter = ['client', 'timestamp']
+        pass
+    class Meta:
+        get_latest_by = 'timestamp'
+
+class Reason(models.Model):
+    '''reason why modified or bad entry did not verify, or changed'''
+    owner = models.TextField(maxlength=128, blank=True)
+    current_owner = models.TextField(maxlength=128, blank=True)
+    group = models.TextField(maxlength=128, blank=True)
+    current_group = models.TextField(maxlength=128, blank=True)
+    perms =  models.TextField(maxlength=4, blank=True)#txt fixes typing issue
+    current_perms = models.TextField(maxlength=4, blank=True)
+    status = models.TextField(maxlength=3, blank=True)#on/off/(None)
+    current_status = models.TextField(maxlength=1, blank=True)#on/off/(None)
+    to = models.TextField(maxlength=256, blank=True)
+    current_to = models.TextField(maxlength=256, blank=True)
+    version = models.TextField(maxlength=128, blank=True)
+    current_version = models.TextField(maxlength=128, blank=True)
+    current_exists = models.BooleanField()#False means its missing. Default True
+    current_diff = models.TextField(maxlength=1280, blank=True)
+    def _str_(self):
+        return "Reason"
+
+class Entries(models.Model):
+    """ Contains all the entries feed by the client """
+    name = models.CharField(maxlength=128, core=True, db_index=True)
+    kind = models.CharField(maxlength=16, choices=KIND_CHOICES, db_index=True)
+
+    def __str__(self):
+        return self.name
+
+class Entries_interactions(models.Model):
+    """ Define the relation between the reason, the interaction and the entry """
+    entry = models.ForeignKey(Entries)
+    reason = models.ForeignKey(Reason)
+    interaction = models.ForeignKey(Interaction)
+    type = models.IntegerField(choices=TYPE_CHOICES)
+    
+class PerformanceManager(models.Manager):
+    '''Provides ability to effectively query for performance information
+    It is possible this should move to the view'''
+    #Date format for maxdate: '2006-01-01 00:00:00'            
+    def performance_per_client(self, maxdate = None):
+        from django.db import connection
+        cursor = connection.cursor()
+        if (maxdate == 'now' or maxdate == None):
+            cursor.execute("SELECT reports_client.name, reports_performance.metric, reports_performance.value "+
+            "FROM reports_performance, reports_performance_interaction, reports_client WHERE ( "+
+            "reports_client.current_interaction_id = reports_performance_interaction.interaction_id AND "+
+            "reports_performance.id = reports_performance_interaction.performance_id)")
+        else:
+            cursor.execute("select reports_client.name, reports_performance.metric, "+
+                           "reports_performance.value from (Select reports_interaction.client_id as client_id, "+
+                           "MAX(reports_interaction.timestamp) as timestamp from reports_interaction where "+
+                           "timestamp < %s GROUP BY reports_interaction.client_id) x, reports_client, "+
+                           "reports_interaction, reports_performance, reports_performance_interaction where "+
+                           "reports_client.id = x.client_id AND x.timestamp = reports_interaction.timestamp AND "+
+                           "x.client_id = reports_interaction.client_id AND reports_performance.id = "+
+                           "reports_performance_interaction.performance_id AND "+
+                           "reports_performance_interaction.interaction_id = reports_interaction.id", [maxdate])
+
+        results = {}
+        for row in cursor.fetchall():
+            try:
+                results[row[0]].__setitem__(row[1], row[2])
+            except KeyError:
+                results[row[0]] = {row[1]:row[2]}
+                                
+        return results
+    
+#performance metrics, models a performance-metric-item
+class Performance(models.Model):
+    '''Object representing performance data for any interaction'''
+    interaction = models.ManyToManyField(Interaction, related_name="performance_items")
+    metric = models.CharField(maxlength=128, core=True)
+    value = models.FloatField(max_digits=32, decimal_places=16)
+    def __str__(self):
+        return self.metric
+ 
+    objects = PerformanceManager()
+ 
+class InternalDatabaseVersion(models.Model):
+    '''Object that tell us to witch version is the database'''
+    version = models.IntegerField()
+    updated = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return "version %d updated the %s" % (self.version, self.updated.isoformat())