creating core/utils.py

core/utils.py

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+import string
+import os
+import datetime
+import logging
+import re
+import resource
+from subprocess import call
+
+from urllib.parse import urljoin
+from decimal import Decimal, getcontext
+getcontext().prec=2 #use 2 significant figures for decimal calculations
+
+import settings
+
+from django.db import models
+from django.contrib import admin
+from django.contrib.auth.models import User
+from django.contrib.contenttypes.models import ContentType
+from django.conf import settings
+
+from django.urls import reverse
+from django.template import Context, loader
+
+#import troggle.core.models_survex 
+
+'''This file declares TROG a globally visible object for caches.
+
+TROG is a dictionary holding gloablly visible indexes and cache functions.
+It is a Global Object, see https://python-patterns.guide/python/module-globals/
+troggle.models.TROG
+
+chaosmonkey(n) - used by survex import to regenerate some .3d files
+save_carefully() - core function that saves troggle objects in the database
+
+'''
+
+TROG = {
+    'pagecache' : {
+        'expedition' : {}
+    }
+}
+
+# This is module-level executable. This is a Bad Thing.
+try:
+      logging.basicConfig(level=logging.DEBUG,
+                           filename=settings.LOGFILE,
+                           filemode='w')
+except:
+# Opening of file for writing is going to fail currently, so decide it doesn't matter for now    
+      pass
+
+def get_process_memory():
+    usage=resource.getrusage(resource.RUSAGE_SELF)
+    return usage[2]/1024.0 
+
+def chaosmonkey(n):
+    # returns True once every n calls - randomly
+    if random.randrange(0,n) != 0:
+        return False
+    # print("CHAOS strikes !", file=sys.stderr)
+    return True
+
+# def get_related_by_wikilinks(wiki_text):
+    # found=re.findall(settings.QM_PATTERN,wiki_text)
+    # res=[]
+    # for wikilink in found:
+        # qmdict={'urlroot':settings.URL_ROOT,'cave':wikilink[2],'year':wikilink[1],'number':wikilink[3]}
+        # try:
+            # cave_slugs = models_caves.CaveSlug.objects.filter(cave__kataster_number = qmdict['cave'])
+            # qm=QM.objects.get(found_by__cave_slug__in = cave_slugs,
+                              # found_by__date__year = qmdict['year'],
+                              # number = qmdict['number'])
+            # res.append(qm)         
+        # except QM.DoesNotExist:
+            # print(('fail on '+str(wikilink)))
+    
+    # return res
+
+
+
+
+
+
+