Internal Server Error on GET /oobi/ (trailing slash)

[lenkan]

Steps to reproduce

Start agent

keria start

Send a HTTP GET to message endpoint /oobi/

curl -v http://localhost:3902/oobi/

Actual result

Keria responds with internal server error

*   Trying 127.0.0.1:3902...
* Connected to localhost (127.0.0.1) port 3902 (#0)
> GET /oobi/ HTTP/1.1
> Host: localhost:3902
> User-Agent: curl/7.81.0
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 500 Internal Server Error
< Content-Type: application/json
< Vary: Accept
< Content-Length: 38
< Server: Ioflo WSGI Server
< Date: Tue, 14 Nov 2023 12:59:46 GMT
<
* Connection #0 to host localhost left intact
{"title": "500 Internal Server Error"}

Logs:

2023-11-14 13:59:46 [FALCON] [ERROR] GET /oobi/ => Traceback (most recent call last):
  File "/home/lenkan/code/keria/.venv/lib/python3.10/site-packages/keri/db/dbing.py", line 458, in getVal
    return(txn.get(key))
lmdb.BadValsizeError: mdb_get: MDB_BAD_VALSIZE: Unsupported size of key/DB name/data, or wrong DUPFIXED size

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "falcon/app.py", line 365, in falcon.app.App.__call__
  File "/home/lenkan/code/keria/src/keria/end/ending.py", line 57, in on_get
    agent = self.agency.lookup(pre=aid)
  File "/home/lenkan/code/keria/src/keria/app/agenting.py", line 253, in lookup
    if (prefixer := self.adb.aids.get(keys=(pre,))) is not None:
  File "/home/lenkan/code/keria/.venv/lib/python3.10/site-packages/keri/db/subing.py", line 258, in get
    val = self.db.getVal(db=self.sdb, key=self._tokey(keys))
  File "/home/lenkan/code/keria/.venv/lib/python3.10/site-packages/keri/db/dbing.py", line 460, in getVal
    raise KeyError(f"Key: `{key}` is either empty, too big (for lmdb),"
KeyError: "Key: `b''` is either empty, too big (for lmdb), or wrong DUPFIXED size. ref) lmdb.BadValsizeError"

Expected result

Keria returns with HTTP 4xx. Probably with a 404 as with GET /oobi/missing-aid endpoint:

$ curl -v http://localhost:3902/oobi/missing-aid
*   Trying 127.0.0.1:3902...
* Connected to localhost (127.0.0.1) port 3902 (#0)
> GET /oobi/abc HTTP/1.1
> Host: localhost:3902
> User-Agent: curl/7.81.0
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 404 Not Found
< Content-Type: application/json
< Vary: Accept
< Content-Length: 72
< Server: Ioflo WSGI Server
< Date: Tue, 14 Nov 2023 13:02:36 GMT
<
* Connection #0 to host localhost left intact
{"title": "404 Not Found", "description": "AID not found for this OOBI"}

Or a 400 saying that an empty AID is invalid.

[pfeairheller]

Closed with PR #178 that is in the 0.1.0 release candidate