Note
This chapter describe common error that may happen at runtime. Some exception can happen during the registration phase, using the function :func:`blacksmith.scan` which are not par not runtime desigated runtime errors here.
If a service is too slow, a :class:`blacksmith.HTTPTimeoutError` exception will be raised to avoid a process to be locked. The default timeout is at 30 seconds but it can be configured on the client factory, and can be overriden on every http call. The default connect timeout is at 15 seconds.
.. literalinclude:: errors_timeout.py
Blacksmith does not declare schema for errors.
It raised exceptions instead.
The exception raised is :class:`blacksmith.HTTPError` and get the
status_code of the error.
Note
Usually, a set of API share the same format for all the errors, but sometime, errors may also be html, so it is not possible to have a schema for errors.
The error is supposed to be a json document, under attribute json.
If it is not the case, the content of the document will be in plain text
under the key detail.
While using the :ref:`Circuit Breaker Middleware`, the OpenedState exception is raised from the Circuit Breaker library, when a service is detected down, and then, that circuit has been opened.