feat: add in-memory diagnostic logs endpoint to track production errors

main.py

@@ -35,6 +35,25 @@ from services.fx_service import fx_service
 logging.basicConfig(level=getattr(logging, settings.log_level))
 logger = logging.getLogger(__name__)
 
+# InMemoryLogHandler to store logs for web diagnostics
+class InMemoryLogHandler(logging.Handler):
+    def __init__(self, limit=300):
+        super().__init__()
+        self.limit = limit
+        self.records = []
+
+    def emit(self, record):
+        try:
+            self.records.append(self.format(record))
+            if len(self.records) > self.limit:
+                self.records.pop(0)
+        except Exception:
+            pass
+
+in_memory_logs = InMemoryLogHandler()
+in_memory_logs.setFormatter(logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s'))
+logging.getLogger().addHandler(in_memory_logs)
+
 # Global diagnostic results storage
 diagnostic_results = []
 
@@ -175,6 +194,11 @@ async def health_check():
     """Health check endpoint required by Hugging Face Spaces."""
     return {"status": "ok"}
 
+@app.get("/api/logs")
+async def get_logs():
+    """Retrieve in-memory logs for diagnostics."""
+    return {"logs": in_memory_logs.records}
+
 @app.get("/api/stats")
 async def get_system_stats():
     """Retrieve database metrics and live LKR exchange rates."""

rate_cache.json

@@ -1,82 +1,82 @@
 {
     "USD_LKR": {
-        "rate": 324.7184,
-        "timestamp": 1779042576.8926218
+        "rate": 325.6208,
+        "timestamp": 1779075945.4562404
     },
     "LKR_USD": {
-        "rate": 0.003079591424446536,
-        "timestamp": 1779042576.8926272
+        "rate": 0.0030710568858009074,
+        "timestamp": 1779075945.4562442
     },
     "EUR_LKR": {
-        "rate": 378.3294,
-        "timestamp": 1779042576.8926556
+        "rate": 378.3062,
+        "timestamp": 1779075945.456252
     },
     "LKR_EUR": {
-        "rate": 0.0026431992861247365,
-        "timestamp": 1779042576.8926578
+        "rate": 0.002643361382922088,
+        "timestamp": 1779075945.4562538
     },
     "GBP_LKR": {
-        "rate": 434.116,
-        "timestamp": 1779042576.8926651
+        "rate": 433.499,
+        "timestamp": 1779075945.4562578
     },
     "LKR_GBP": {
-        "rate": 0.0023035317749173032,
-        "timestamp": 1779042576.8926666
+        "rate": 0.0023068103963330942,
+        "timestamp": 1779075945.4562588
     },
     "AUD_LKR": {
-        "rate": 233.4401,
-        "timestamp": 1779042576.8926735
+        "rate": 232.1025,
+        "timestamp": 1779075945.4562616
     },
     "LKR_AUD": {
-        "rate": 0.0042837541622026375,
-        "timestamp": 1779042576.892675
+        "rate": 0.0043084413136437565,
+        "timestamp": 1779075945.456262
     },
     "JPY_LKR": {
-        "rate": 2.0486,
-        "timestamp": 1779042576.892681
+        "rate": 2.0491,
+        "timestamp": 1779075945.4562647
     },
     "LKR_JPY": {
-        "rate": 0.48813824074978035,
-        "timestamp": 1779042576.8926826
+        "rate": 0.4880191303499097,
+        "timestamp": 1779075945.4562657
     },
     "AED_LKR": {
-        "rate": 88.4045,
-        "timestamp": 1779042576.8926892
+        "rate": 88.6525,
+        "timestamp": 1779075945.4562683
     },
     "LKR_AED": {
-        "rate": 0.011311641375721824,
-        "timestamp": 1779042576.892691
+        "rate": 0.011279997744000451,
+        "timestamp": 1779075945.456269
     },
     "SAR_LKR": {
-        "rate": 86.5316,
-        "timestamp": 1779042576.8926976
+        "rate": 86.7697,
+        "timestamp": 1779075945.4562716
     },
     "LKR_SAR": {
-        "rate": 0.011556471855368443,
-        "timestamp": 1779042576.8926988
+        "rate": 0.011524760371419977,
+        "timestamp": 1779075945.4562721
     },
     "INR_LKR": {
-        "rate": 3.3908,
-        "timestamp": 1779042576.8927054
+        "rate": 3.3929,
+        "timestamp": 1779075945.4562747
     },
     "LKR_INR": {
-        "rate": 0.29491565412292087,
-        "timestamp": 1779042576.8927069
+        "rate": 0.2947331191606001,
+        "timestamp": 1779075945.4562752
     },
     "CNY_LKR": {
-        "rate": 47.7682,
-        "timestamp": 1779042576.8927135
+        "rate": 47.773,
+        "timestamp": 1779075945.4562776
     },
     "LKR_CNY": {
-        "rate": 0.020934429180919523,
-        "timestamp": 1779042576.892715
+        "rate": 0.020932325790718607,
+        "timestamp": 1779075945.456278
     },
     "QAR_LKR": {
-        "rate": 89.0738,
-        "timestamp": 1779042576.8927214
+        "rate": 89.3091,
+        "timestamp": 1779075945.4562805
     },
     "LKR_QAR": {
-        "rate": 0.011226645770136672,
-        "timestamp": 1779042576.8927226
+        "rate": 0.011197067264142175,
+        "timestamp": 1779075945.4562812
     }
 }