chore: log exception details (#95)

* log exception details

* doc

Author: tejasbadadare

README.md

@@ -7,8 +7,8 @@ Observe Pyth on-chain price feeds and run sanity checks on the data.
 Container images are available at https://github.com/pyth-network/pyth-observer/pkgs/container/pyth-observer
 
 To run Observer locally, you will need: 
-- Python 3.10 ([pyenv](https://github.com/pyenv/pyenv) is a nice way to manage Python installs, and once installed will automatically set the version to 3.10 for this project dir via the `.python-version` file).
-- [Poetry](https://python-poetry.org), which handles package and virtualenv management. 
+- Python 3.11 ([pyenv](https://github.com/pyenv/pyenv) is a nice way to manage Python installs, and once installed will automatically set the version to 3.11 for this project dir via the `.python-version` file).
+- [Poetry] v2.1.4 (https://python-poetry.org), which handles package and virtualenv management. 
 
 Install dependencies and run the service:
 ```sh

pyth_observer/__init__.py

@@ -200,7 +200,11 @@ async def run(self):
                     await self.dispatch.run(states)
 
             except Exception as e:
-                logger.error(f"Error in run loop: {e}")
+                logger.exception(f"Error in run loop: {repr(e)}")
+                if "product" in locals():
+                    logger.error(
+                        f"Product attrs during error: {product.attrs}"  # pyright: ignore[reportPossiblyUnboundVariable]
+                    )
                 health_server.observer_ready = False
                 metrics.loop_errors_total.labels(error_type=type(e).__name__).inc()
             await asyncio.sleep(5)