Previously one would create a sender and receiver channel pair, pass the
sender to the `build_network_future` through the service builder and
funnel network events returned from polling the network service into the
sender to be consumed by the authority discovery module owning the
receiver.

With recent changes it is now possible to register an `event_stream`
with the network service directly, thus one does not need to make the
detour through the `build_network_future`.

* client/authority-discovery: Limit number of connections to authorities

Instead of connecting to all sentry nodes of all authorities, with this
patch the authority discovery module does the following:

- Choose one sentry node per authority at random.

- Choose MAX_NUM_AUTHORITY_CONN out of the above at random.

The module uses randomness to prevent hot spots, e.g. all nodes trying
to connect to a single node. If the authority discovery module would
choose the nodes to connect to at random on each new address that it
learns of, the node would go through a lot of connection churn.  Instead
it creates a random seed at start up and uses this seed for its RNG on
each update cycle.

* client/authority-discovery: Extract address cache into own module

* client/authority-discovery/src/addr_cache: Add basic unit tests

* client/authority-discovery: Replace unwrap with expect on [u8] cmp

* .maintain/sentry-node/docker-compose.yml: Prefix endpoint flags

* client/authority-discovery/src/addr_cache: Use sort_unstable and cmp

* client/authority-discovery: Use BTreeMap in addr_cache for sorted iter

To reduce connection churn it is preferrable to have `get_subset` of the
`addr_cache` to return the same result on repeated calls. `get_subset`
iterates a map. To make the process of iteration deterministic, use a
`BTreeMap` instead of a `HashMap`.

* update libp2p

* update toml files also

* Fix cli for structopt 0.3.7 and pin to that version

This is just some hotfix to make everything compile. In the future it
will require another pr to not depend on internals of StructOpt, but
that will probably also require some additions to StructOpt itself. To
not break the code again with another StructOpt, this also pins the
StructOpt version.

* Fix benches

* Fix for fix

* initial block import handler

* fix node template

* fix error message

* fix error message again

* final fixes

* fix node template again

* Implement local_peer_id for gossip

* refactor local_peer_id

* fix

* reset gossip

* Update tests.rs

* fix ci

* fix review

* fix Cargo.lock

* fix Cargo.lock

* Clean imports in wasmi_execution

* Replace `interpret_runtime_api_result` with `pointer_and_len_from_u64`.

* Extract sc-executor-common crate

* Extract `sc-executor-wasmi` into its own crate

* Extract `sc-executor-wasmtime` into its own crate.

* Add missing headers.

* Clean and docs

* Docs for sc-executor-wasmi

* Expand a comment about sandboxing

* Fix assert_matches

* Rename (un)pack_ptr_and_len and move them into util module

* Remove wasmtime errors in sc-executor-common

* Fix transaction replacements.

* Test.

* Fix typo.

* Update client/transaction-pool/graph/src/ready.rs

Co-Authored-By: Bastian Köcher <[email protected]>

Co-authored-by: Bastian Köcher <[email protected]>

* initial rename

* nitpick: add space in "chain spec"

* Add comment to client spec.

* Common shared parames getter

* Expose more types from `service-builder`

Co-authored-by: Bastian Köcher <[email protected]>

Bastian Köcher authored Dec 20, 2019 and Arkadiy Paronyan committed Dec 20, 2019

* Fix warnings and make CI working again

* Fix test

* Subkey add support for interactive password

* Support inserting the URI from tty as well

* Warn about using --rpc-external and --ws-external options

* Apply review comments

* Remove links placeholders

* Add links to wiki

* Document TransactionStatus and fix termination conditions.

* Update client/rpc-api/src/author/mod.rs

Co-Authored-By: Bastian Köcher <[email protected]>

The finality-grandpa module needs two sets of functionalities from the
network:

1. Everything gossip related, e.g. event_stream, write_notification, ...

2. The ability to set a fork sync request for a specific block hash.

Instead of embedding (2) inside of (1) this patch extracts (2) from (1)
having finality-grandpa depend on a `Network` that fulfills the
`network_gossip::Network` trait and that can set block sync requests.

On the one hand this improves the overall structure splitting things
that don't logically belong together. On the other hand it does
reintroduce a lot of trait bounds within finality-grandpa.

* RPC forwarders for adding reserved peers

* implement service side of reserved-peer RPCs

* Clean up unnecessary format! invocation

Co-Authored-By: Niklas Adolfsson <[email protected]>

* add some tests for the new RPC methods

* remove redundant `data` field

Co-Authored-By: Tomasz Drwięga <[email protected]>

* Fix the subkey error message

* Fix check_benchmarks

* clean up cargo.toml syntax

* bumping versions to 2.0

* bump networking to 0.8

* move consensus down to 0.8

* bump consensus pallets to 0.8.0, too

* Upping babe and aura pallets

* add remaining, missing version definitions

* missed some

* rewrite me

* [cli]: make `BlockNumber` generic

* cleanup

* Rename: Phase 1.

* Unify codec.

* Fixing: Phase 2

* Fixing: Phase 3.

* Fixing: Phase 4.

* Fixing: Phase 5.

* Fixing: Phase 6.

* Fixing: Phase 7.

* Fixing: Phase 8. Tests

* Fixing: Phase 9. Tests!!!

* Fixing: Phase 10. Moar tests!

* Finally done!

* More fixes.

* Rename primitives:: to sp_core::

* Apply renames in finality-grandpa.

* Fix benches.

* Fix benches 2.

* Revert node-template.

* Fix frame-system in our modules.

* fix srml-support compilation

* babe: exponential backoff on missed blocks.

* In progress, runtime io must switch to future proof root +
child_specific (unique id) + u32 type.

* Switch interface, sr-io seems ok, rpc could use similar interface to
sr-io, genesis json broken if there is child trie in existing encoding
genesis.

* test from previous implementation.

* fix proving test.

* Restore Keyspacedb from other branch, only apply to child trie.

* Removing unneeded child_info from child root (child info are stored
if things changed, otherwhise the root does not change).

* Switch rpc to use same format as ext: more future proof.

* use root from child info for trie backend essence.

* Breaking long lines.

* Update doc and clean pr a bit.

* fix error type

* Restore removed doc on merge and update sr-io doc.

* Switch child storage api to use directly unique id, if managed id
where to be put in place, the api will change at this time.

* Clean deprecated host interface from child.

* Removing assertion on child info (can fail depending on root
memoization).

* merging child info in the overlay when possible.

* child iteration by prefix using child_info.

* Using ChainInfo in frame support. ChainInfo gets redesign to avoid
buffers allocation on every calls.

* Add length of root to the data of child info.

* comments

* Encode compact.

* Remove child info with root.

* Fix try_update condition.

* Comment Ext child root caching.

* Replace tuples by struct with field

* remove StorageTuple alias.

* Fix doc tests, and remove StorageOverlay and ChildStorageOverlay
aliases.

* Extract gossiping system from network

* Finish porting GRANDPA tests

* Try put correct engine ID

* Fix messages encoding

* Fix communication tests

* Use a threads pool to spawn stuff

* Fix compilation everywhere

* Fix bad merge conflict

* Remove dependency on async-std

* Apply suggestions from code review

Co-Authored-By: Robert Habermeier <[email protected]>

* More suggestions

* Remove network startup GP future

* Update to futures_timer

* adjust wait_when_behind test

* Pass correct Roles after handshake

* Revert "adjust wait_when_behind test"

This reverts commit 9e310244.

* Crate root documentation

* Remove MessageRecipient

* Address concerns

* Fix more concerns

* Forgot Cargo.lock

* client/rpc/api -> client/rpc-api

* client/util/wasm-builder-runner -> utils/wasm-builder-runner

* client/grafana-data-source -> utils/grafana-data-source

* test/utils -> test-utils

* fix moved path

* Update Cargo.lock

* Update Cargo.lock

* rename crate: sp-transaction-pool-api -> sp-transaction-pool

* move primitives/core/derive-debug -> primitives/derive-debug; primitives/core/storage -> primitives/storage

* rename crate sp-core-storage -> sp-storage

* rename and move: test/utils/transaction-factory -> client/transaction-factory

* move transaction-factory -> node/transaction-factory

* fix missing rename

* Move chain-spec-builder into bin/utils

* move subkey into bin/utils

* Update new subkey location

* Update docs to reflect new location for utils

* fixing import name

* sr-arithmetic -> arithmetic

* sr-sandbox -> sandbox

* primitives/sr-staking-primitives -> primitives/staking

* primitives/sr-version -> primitives/version

* primitives/block-builder/runtime-api -> primitives/block-builder