locking mechanism to handle dupe gitcoinbot comments

app/app/settings.py

@@ -386,6 +386,7 @@
 DJANGO_REDIS_LOG_IGNORED_EXCEPTIONS = env.bool('REDIS_LOG_IGNORED_EXCEPTIONS', default=True)
 COLLECTFAST_CACHE = env('COLLECTFAST_CACHE', default='collectfast')
 COLLECTFAST_DEBUG = env.bool('COLLECTFAST_DEBUG', default=False)
+REDIS_URL = env('REDIS_URL', default='rediscache://redis:6379/0?client_class=django_redis.client.DefaultClient')
 
 CACHES = {
     'default': env.cache(

app/app/utils.py

@@ -354,3 +354,13 @@ def get_default_network():
     if settings.DEBUG:
         return 'rinkeby'
     return 'mainnet'
+
+
+def get_semaphor(namespace, count=1):
+    from redis import Redis
+    from redis_semaphore import Semaphore
+    from urllib.parse import urlparse
+    redis = urlparse(settings.REDIS_URL)
+
+    semaphore = Semaphore(Redis(host=redis.hostname, port=redis.port), count=count, namespace=namespace)
+    return semaphore

app/dashboard/utils.py

@@ -25,6 +25,7 @@
 
 import ipfsapi
 import requests
+from app.utils import get_semaphor
 from dashboard.helpers import UnsupportedSchemaException, normalize_url, process_bounty_changes, process_bounty_details
 from dashboard.models import Activity, Bounty, UserAction
 from eth_utils import to_checksum_address
@@ -319,14 +320,17 @@ def web3_process_bounty(bounty_data):
         print(f"--*--")
         return None
 
-    did_change, old_bounty, new_bounty = process_bounty_details(bounty_data)
+    semaphor_key = f"bounty_processor_{bounty_data['id']}"
+    semaphor = get_semaphor(semaphor_key)
+    with semaphor:
+        did_change, old_bounty, new_bounty = process_bounty_details(bounty_data)
 
-    if did_change and new_bounty:
-        _from = old_bounty.pk if old_bounty else None
-        print(f"- processing changes, {_from} => {new_bounty.pk}")
-        process_bounty_changes(old_bounty, new_bounty)
+        if did_change and new_bounty:
+            _from = old_bounty.pk if old_bounty else None
+            print(f"- processing changes, {_from} => {new_bounty.pk}")
+            process_bounty_changes(old_bounty, new_bounty)
 
-    return did_change, old_bounty, new_bounty
+        return did_change, old_bounty, new_bounty
 
 
 def has_tx_mined(txid, network):

requirements/base.txt

@@ -76,3 +76,5 @@ mkdocs-material==3.0.4
 pydoc-markdown==2.0.4
 oauth2client==4.1.3
 pyvips==2.1.3
+redis-semaphore
+