* feat: allow msgIdProvider to fail
Closes: #642.
Changes the return type of the msgIdProvider to `Result[MessageID, string]` so that message id generation can fail.
String error type was chosen as this `msgIdProvider` mainly because the failed message id generation drops the message and logs the error provided. Because `msgIdProvider` can be externally provided by library consumers, an enum didn’t make sense and a object seemed to be overkill. Exceptions could have been used as well, however, in this case, Result ergonomics were warranted and prevented wrapping quite a large block of code in try/except.
The `defaultMsgIdProvider` function previously allowed message id generation to fail silently for use in the tests: when seqno or source peerid were not valid, the message id generated was based on a hash of the message data and topic ids. The silent failing was moved to the `defaultMsgIdProvider` used only in the tests so that it could not fail silently in applications.
Unit tests were added for the `defaultMsgIdProvider`.
* Change MsgIdProvider error type to ValidationResult
* Connect & Peer event handlers now receive a peerinfo
* small peerstore refacto
* implement peerstore in switch
* changed PeerStore to final ref object
* revert libp2p/builders.nim
* adding raises defect across the codebase
* use unittest2
* add windows deps caching
* update mingw link
* die on failed peerinfo initialization
* use result.expect instead of get
* use expect more consistently and rework inits
* use expect more consistently
* throw on missing public key
* remove unused closure annotation
* merge master
* gossipsub: unsubscribe fixes
* fix KeyError when updating metric of unsubscribed topic
* fix unsubscribe message not being sent to all peers causing them to
keep thinking we're still subscribed
* release memory earlier in a few places
* floodsub fix
In `async` functions, a closure environment is created for variables
that cross an await boundary - this closure environment is kept in
memory for the lifetime of the associated future - this means that
although _some_ variables are no longer used, they still take up memory
for a long time.
In Nimbus, message validation is processed in batches meaning the future
of an incoming gossip message stays around for quite a while - this
leads to memory consumption peaks of 100-200 mb when there are many
attestations in the pipeline.
To avoid excessive memory usage, it's generally better to move non-async
code into proc's such that the variables therein can be released earlier
- this includes the many hidden variables introduced by macro and
template expansion (ie chronicles that does expensive exception
handling)
* move seen table salt to floodsub, use there as well
* shorten seen table salt to size of hash
* avoid unnecessary memory allocations and copies in a few places
* factor out message scoring
* avoid reencoding outgoing message for every peer
* keep checking validators until reject (in case there's both reject and
ignore)
* `readOnce` avoids `readExactly` overhead for single-byte read
* genericAssign -> assign2
* properly propagate initiator information for gossipsub
* Fix pubsubpeer lifetime management
* restore old behavior
* tests fixing
* clamp backoff time value received
* fix member name collisions
* internal test fixes
* better names and explaining of the importance of transport direction
* fixes
* Refactor gossipsub into multiple modules
* splitup further gossipsub
* move more mesh related stuff to behavior
* fix internal tests
* fix PubSubPeer.outbound flag, make it more reliable
* use discard rather then _
* salt ids in seen table
* add subscription validation callback and avoid processing topics we don't care of
* apply penalty on bad subscription
* fix IHave handling IDs
* reduce indenting, add some comments
* fix gossip randombytes generation
* do not descore unwanted topics (might happen, due to timing, needs improvements)
* cleaning up and added tests
* validate subscriptions only when subscribing
* set notice level for failed publish
* fix floodsub behavior
* break stream tracking by type
* use closeWithEOF to await wrapped stream
* fix cancelation leaks
* fix channel leaks
* logging
* use close monitor and always call closeUnderlying
* don't use closeWithEOF
* removing close monitor
* logging
* add helper to read EOF marker after closing stream (else stream stay
alive until timeout/reset)
* don't assert on empty channel message
* don't loop when writing to chronos (no need)
diegomrsantos
Tanguy
Jacek Sieka
Miran
lchenut
tersec
Eric Mastro
Tanguy
Dmitriy Ryajov
Giovanni Petrantoni
Giovanni Petrantoni