60 lines
2.3 KiB
Python
60 lines
2.3 KiB
Python
from django.db import models
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from django.utils import timezone
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class Instance(models.Model):
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"""
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The main model that saves details of an instance and links between them in the peers
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property.
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Don't change the schema without verifying that the gephi script can still read the data.
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"""
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# Primary key
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name = models.CharField(max_length=200, primary_key=True)
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# Details
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description = models.TextField(blank=True)
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domain_count = models.IntegerField(blank=True, null=True)
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status_count = models.IntegerField(blank=True, null=True)
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user_count = models.IntegerField(blank=True, null=True)
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version = models.CharField(max_length=1000, blank=True) # In Django CharField is never stored as NULL in the db
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status = models.CharField(max_length=100)
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# Foreign keys
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peers = models.ManyToManyField('self', symmetrical=False, through='PeerRelationship')
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# Graph
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x_coord = models.FloatField(blank=True, null=True)
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y_coord = models.FloatField(blank=True, null=True)
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# Automatic fields
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first_seen = models.DateTimeField(auto_now_add=True)
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last_updated = models.DateTimeField(default=timezone.now)
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class PeerRelationship(models.Model):
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source = models.ForeignKey(Instance, related_name="following_relationship", on_delete=models.CASCADE)
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target = models.ForeignKey(Instance, related_name="follower_relationships", on_delete=models.CASCADE)
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# Interaction stats
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mention_count = models.IntegerField(default=0)
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statuses_seen = models.IntegerField(default=0) # because we want mention_count as a ratio
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# Metadata
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first_seen = models.DateTimeField(auto_now_add=True)
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last_updated = models.DateTimeField(default=timezone.now)
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class Edge(models.Model):
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"""
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This class is automatically generated from PeerRelationship using the build_edges command.
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It aggregates stats from the asymmetrical PeerRelationship to a symmetrical one that's suitable for serving
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to the front-end.
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"""
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source = models.ForeignKey(Instance, related_name='targets', on_delete=models.CASCADE)
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target = models.ForeignKey(Instance, related_name='sources', on_delete=models.CASCADE)
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weight = models.FloatField(blank=True, null=True)
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# Metadata
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last_updated = models.DateTimeField(default=timezone.now)
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