buffer rabbitMQ & influxdb writes

monitoring.py

@@ -1,20 +0,0 @@
-from influxdb import InfluxDBClient
-
-client = InfluxDBClient("localhost", 8086, "root", "root", "reddit_feed")
-
-
-def init():
-    db_exists = False
-    for db in client.get_list_database():
-        if db["name"] == "reddit_feed":
-            db_exists = True
-            break
-
-    if not db_exists:
-        client.create_database("reddit_feed")
-
-
-def log(event):
-    client.write_points(event)
-
-

requirements.txt

@@ -1,4 +1,5 @@
 praw
 pika
 influxdb
-psaw
+psaw
+git+git://github.com/simon987/hexlib.git

run.py

@@ -7,6 +7,7 @@ import sys
 import threading
 import time
 import traceback
+from collections import defaultdict
 from datetime import datetime, timedelta
 from itertools import islice
 from logging import FileHandler, StreamHandler
@@ -14,10 +15,11 @@ from queue import Queue
 
 import pika
 import praw
+from hexlib.misc import buffered
+from hexlib.monitoring import Monitoring
 from praw.endpoints import API_PATH
 from praw.models import Comment
 
-import monitoring
 from post_process import post_process
 from rate_limiter import GoodRateLimiter
 from util import update_cursor, read_cursor, reddit_ids
@@ -41,7 +43,10 @@ def connect():
 connect()
 
 REALTIME_DELAY = timedelta(seconds=60)
-MONITORING = False
+MONITORING = True
+
+if MONITORING:
+    monitoring = Monitoring("reddit_feed", logger=logger, batch_size=50, flush_on_exit=True)
 
 formatter = logging.Formatter('%(asctime)s %(levelname)-5s %(message)s')
 file_handler = FileHandler("reddit_feed.log")
@@ -100,32 +105,44 @@ def serialize(thing):
         }
 
 
+@buffered(batch_size=10000, flush_on_exit=True)
+def _publish_buffered(items):
+    buckets = defaultdict(list)
+    for item in items:
+        buckets[item[0]].append(item)
+
+    for bucket in buckets.values():
+        routing_key, _ = bucket[0]
+        body = [item[1] for item in bucket]
+
+        while True:
+            try:
+                reddit_channel.basic_publish(
+                    exchange='reddit',
+                    routing_key=routing_key,
+                    body=json.dumps(body, separators=(',', ':'), ensure_ascii=False, sort_keys=True)
+                )
+                logger.debug("RabbitMQ: published %d items (%s)" % (len(body), routing_key))
+                break
+            except Exception as e:
+                logger.error(str(e))
+                time.sleep(0.5)
+
+
 def publish(thing):
     thing_type = type(thing).__name__.lower()
     j = serialize(thing)
     post_process(j)
 
-    reddit_channel.basic_publish(
-        exchange='reddit',
-        routing_key="%s.%s" % (thing_type, str(thing.subreddit).lower()),
-        body=json.dumps(j)
-    )
+    _publish_buffered([("%s.%s" % (thing_type, str(thing.subreddit).lower()), j)])
 
 
 def publish_worker(q: Queue):
     logger.info("Started publish thread")
     while True:
         thing = q.get()
-        try:
-            while True:
-                try:
-                    publish(thing)
-                    break
-                except Exception as e:
-                    connect()
-                    logger.error(str(e) + ": " + traceback.format_exc())
-        finally:
-            q.task_done()
+        publish(thing)
+        q.task_done()
 
 
 def mon_worker(q: Queue):
@@ -195,8 +212,6 @@ if __name__ == "__main__":
 
     logger.info("Starting app @%s" % sys.argv[1])
 
-    if MONITORING:
-        monitoring.init()
     pub_queue = Queue()
     try:
         publish_thread = threading.Thread(target=publish_worker, args=(pub_queue,))