prod msg enq

TASK.md

@@ -89,18 +89,18 @@ Queue args for `orders.q`:
 
 ## Step 3: Producer (20 min)
 
-- [ ] `producer.py` should publish 5 JSON orders to routing key `order.created`.
-- [ ] Each message should include:
-- [ ] `order_id`
-- [ ] `user_id`
-- [ ] `amount`
-- [ ] `should_fail` (set true for at least 1 order)
-- [ ] `retry_count` (start at 0)
-- [ ] Mark messages persistent.
+- [x] `producer.py` should publish 5 JSON orders to routing key `order.created`.
+- [x] Each message should include:
+- [x] `order_id`
+- [x] `user_id`
+- [x] `amount`
+- [x] `should_fail` (set true for at least 1 order)
+- [x] `retry_count` (start at 0)
+- [x] Mark messages persistent.
 
 Success check:
 
-- [ ] Running `uv run producer.py` prints “Published order …” 5 times.
+- [x] Running `uv run producer.py` prints “Published order …” 5 times.
 
 ## Step 4: Worker (35 min)
 

main.py

@@ -9,6 +9,13 @@ channel = connection.channel()
 
 # this is A DECLARE, basically so can run multuple  times
 # .x = exchange
+
+# what does durable mean?
+# when broke restarts
+# even if I don't run this IaC like code to create the q
+# the q will exist
+# it basically commits the q defns to disk
+# not the message
 channel.exchange_declare(
     exchange="orders.x", exchange_type="direct", durable=True)
 # .dlx = dead letter exchange for failed messages

producer.py

@@ -0,0 +1,38 @@
+import pika
+import json
+
+conn = pika.BlockingConnection(pika.ConnectionParameters("localhost"))
+ch = conn.channel()
+
+# can redeclare qs, but since they are in main no need to
+# the op would've been idempotent if I did though
+
+# random objets to be conv to json
+orders = [
+    {"order_id": 1001, "user_id": "u1", "amount": 49.99,
+        "should_fail": False, "retry_count": 0},
+    {"order_id": 1002, "user_id": "u2", "amount": 19.50,
+        "should_fail": False, "retry_count": 0},
+    {"order_id": 1003, "user_id": "u3", "amount": 99.00,
+        "should_fail": True,  "retry_count": 0},
+    {"order_id": 1004, "user_id": "u4", "amount": 10.00,
+        "should_fail": False, "retry_count": 0},
+    {"order_id": 1005, "user_id": "u5", "amount": 75.25,
+        "should_fail": False, "retry_count": 0},
+]
+
+for order in orders:
+    body = json.dumps(order)
+    ch.basic_publish(
+        exchange="orders.x",
+        routing_key="order.created",  # as in the bindings
+        body=body,
+        properties=pika.BasicProperties(
+            delivery_mode=2,  # persistent msg, committed to disk before ack
+            content_type="application/json"
+        )
+    )
+
+    print(f"published order {order['order_id']}")
+
+conn.close()