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pezkuwi-subxt/substrate/client/consensus/pow
Bastian Köcher 14b5acab86 Introduce a "dynamic" block size limit for proposing (#8588)
* Introduce a "dynamic" block size limit for proposing

This adds support for using a dynamic block size limit per call to
`propose`. This is required for Cumulus/Parachains to always use stay in
the limits of the maximum allowed PoV size.

As described in the docs, the block limit is only checked in the process
of pushing transactions. As we normally do some other operations in
`on_finalize`, it can happen that the block size still grows when there
is some proof being collected (as we do for parachains). This means,
that the given block limit needs to be rather conservative on the actual
value and should not be the upper limit.

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: Andronik Ordian <write@reusable.software>

* More future proof encoded size updating

* Use `ProofRecorderInner`

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Update client/consensus/slots/src/lib.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Update client/consensus/slots/src/slots.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

* Update client/basic-authorship/src/basic_authorship.rs

Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>

Co-authored-by: Andronik Ordian <write@reusable.software>
Co-authored-by: André Silva <123550+andresilva@users.noreply.github.com>
2021-04-14 17:56:22 +00:00
..
2020-08-20 17:04:42 +02:00

Proof of work consensus for Substrate.

To use this engine, you can need to have a struct that implements PowAlgorithm. After that, pass an instance of the struct, along with other necessary client references to import_queue to setup the queue. Use the start_mine function for basic CPU mining.

The auxiliary storage for PoW engine only stores the total difficulty. For other storage requirements for particular PoW algorithm (such as the actual difficulty for each particular blocks), you can take a client reference in your PowAlgorithm implementation, and use a separate prefix for the auxiliary storage. It is also possible to just use the runtime as the storage, but it is not recommended as it won't work well with light clients.

License: GPL-3.0-or-later WITH Classpath-exception-2.0