Work in progress

1 files changed, 26 insertions, 0 deletions

diff --git a/wordcount/src/bolts/wordcount.py b/wordcount/src/bolts/wordcount.py
new file mode 100644
index 0000000..85fbfb7
--- /dev/null
+++ b/wordcount/src/bolts/wordcount.py
@@ -0,0 +1,26 @@
+import os
+from collections import Counter
+
+from streamparse import Bolt
+
+
+class WordCountBolt(Bolt):
+    outputs = ["word", "count"]
+
+    def initialize(self, conf, ctx):
+        self.counter = Counter()
+        self.pid = os.getpid()
+        self.total = 0
+
+    def _increment(self, word, inc_by):
+        self.counter[word] += inc_by
+        self.total += inc_by
+
+    def process(self, tup):
+        word = tup.values[0]
+        self._increment(word, 10 if word == "dog" else 1)
+        if self.total % 1000 == 0:
+            self.logger.info(
+                f"counted [{self.total:,}] words [pid={self.pid}]"
+            )
+        self.emit([word, self.counter[word]])