We have been using a static type checker (pyright) for a long time, but its
check was not yet a prerequisite for passing the quality gate. It was checked
in the CI, but the error messages were only logged.
As is always the case in life, with checks that you have to do but which have no
consequences; you neglect them :-)
We didn't activate the checks back then because we (even today) have too much
monkey patching in our code (not only in the engines, httpx and others objects
are also affected).
We want to replace monkey patching with clear interfaces for a long time, the
basis for this is increased typing and we can only achieve this if we make type
checking an integral part of the quality gate.
This PR activates the type check; in order to pass the check, a few typings
were corrected in the code, but most type inconsistencies were deactivated via
inline comments.
This was particularly necessary in places where the code uses properties that
stick to the objects (monkey patching). The sticking of properties only happens
in a few places, but the access to these properties extends over the entire
code, which is why there are many `# type: ignore` markers in the code ... which
we will hopefully be able to remove again successively in the future.
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
DDG's bot detection is sensitive to the vqd value. For some search terms (such
as extremely long search terms that are often sent by bots), no vqd value can be
determined.
If SearXNG cannot determine a vqd value, then no request should go out to
DDG (WEB): a request with a wrong vqd value leads to DDG temporarily putting
SearXNG's IP on a block list.
Requests from IPs in this block list run into timeouts.
Not sure, but it seems the block list is a sliding window: to get my IP rid from
the bot list I had to cool down my IP for 1h (send no requests from that IP to
DDG).
Since such issues can't reproduce in a local instance I tested this patch 24h on
my public SearXNG instance: There are still errors (rare), but the reliability
is still 100%.
Related:
- https://github.com/searxng/searxng/pull/2922
- https://github.com/searxng/searxng/pull/2923
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
