do not crash on unhandled exception

.python-version

@@ -0,0 +1 @@
+3.10

ecommerce_exporter/cli.py

@@ -4,7 +4,6 @@ import time
 
 import yaml
 
-from httpx import RequestError
 from prometheus_client import start_http_server, Gauge, Counter
 
 from ecommerce_exporter.scrape_target import ScrapeError, ScrapeTarget
@@ -43,7 +42,7 @@ def main():
         '--user-agent',
         help='The user-agent to spoof. (default: %(default)s)',
         type=str,
-        default='Mozilla/5.0 (X11; Linux x86_64; rv:106.0) Gecko/20100101 Firefox/106.0',
+        default='Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0',
     )
     parser.add_argument(
         '-p', '--listen-port',
@@ -69,6 +68,7 @@ def main():
         }
 
     # start the http server to server the prometheus metrics
+    print("serving metrics on http://%s:%s/metrics" % (args.listen_address, args.listen_port))
     start_http_server(args.listen_port, args.listen_address)
 
     # start the main loop
@@ -85,7 +85,9 @@ def main():
                     product_name=scrape_target.product_name,
                     target_name=scrape_target.target_name,
                 ).inc()
-            except (RequestError, ScrapeError) as e:
+            except KeyboardInterrupt:
+                return
+            except Exception as e:
                 print("Failed to scrape! product: '%s', target: '%s', message: '%s'" % (scrape_target.product_name, scrape_target.target_name, e))
                 ECOMMERCE_SCRAPE_TARGET_FAILURE.labels(
                     product_name=scrape_target.product_name,