* Really fix #2652 this time

* Other fixes

* Minor style fix

* Split informant in two

* Clean up imports

* Don't rely on saturated_into

* Add some documentation to the informant display

* babe: add babe module trait

* babe: track current slot and epoch start slot

* babe: implement ShouldEndSession based on epochs

* babe: rename weight type to avoid ambiguities

* babe: expose epoch start slot in Epoch digest

* babe: use epoch start for validating epoch transitions

* babe: make the epoch duration a parameter type

* babe: remove unused fields from config

* node: update runtime to use babe instead of aura

* node: use babe instead of aura

* core: generate sr25519 keys from seed and add to keystore

* core: remove AuthorityKeyring

* node: remove unused primitive types related to babe crypto

* uniform babe primitives crate import name

* wrap long lines

* babe: fix find_epoch_digest

* fork-tree: fix find_node_where

* node: set babe epoch duration to "10 minutes"

* babe: cleanup import key cache if authorities don't change

* node: make integration test compile (but fail)

* node: bump spec_version

* node: fix import

* babe: don't use constants in storage fields array sizes

* babe: account for first epoch slot way in the past

* babe: signal next epoch change (not current)

* babe: calculate next epoch randomness with next epoch index

* babe: track next epoch in node

* babe: cache current epoch and authorities separately

* babe: generate valid babe vrf proofs in integration test

* babe: cleanup claim_slot

* babe: perform threshold calculation according to spec

* babe: compute relative weight in threshold

* babe: more precise threshold calculation

* babe: use floats for threshold exponent calculation

* babe: update constant c

* Switch the client to new futures

* No need for compat in the client

* Fix client tests

* Address review

* Cleanup CLI and introduce `execution-all`

`--execution-all` sets the execution strategies for all available
execution contexts.

* Rename parameter

Given the following situation: A validator 'A' is not supposed to be
connected to the public internet to protect it from e.g. a DoS attack.
Instead it connects to a sentry node 'sentry-A' which connects to the
public internet. Validator 'B' can reach validator 'A' via sentry node
'sentry-A' and vice versa.

A sentry node needs to participate in the grandpa gossip without
becoming a validator itself in order to forward these message to its
validator. This commit adds a new command line flag (`--grandpa-voter`)
forcing a node to participate in the grandpa voting process even though
no `--key` was specified. Due to the fact that it does not have a key,
it does not become a validator in the network.

In order to simulate the above situation this commit also adds a Docker
Compose file (`scripts/sentry-node/docker-compose.yml`) with further
documentation.

* Implement sign & verify.

* Use phrases and password.

* Sign & verify with authority keys.

* Fix tests.

* WiP

* WiP

* Allow the caller to decide on 'CryptoKind'.

* Remove TODO.

* Make seed private back.

* Fix non-std build and bump version.

* Use Into<u32> instead of asses.

* Add missing typedef.

* Remove useless internal messages

* Remove NetworkService::disconnect_peer

* Remove NetworkMsg altogether

* Rename ProtocolMsg ServerToWorkerMsg

* Remove useless code

* Add example for parse_str_addr

* Move parse_str_addr and ProtocolId to config

* Don't reexport the content of config

* Rework the imports

* More reexports rework

* Add documentation

* Move finalization report to network future

* Move on_block_imported to worker

* get_value/put_value no longer locking

* local_peer_id() no longer locks

* Remove FetchFuture

* Service imports cleanup

* Produce the network state in the network task

* Merge network task and RPC network task

* Move network methods to NetworkWorker

* Remove Arc peers system from network

* add_reserved_peer now goes through the channel

* Remove Mutex around network swarm

* Remove the FnOnce alias traits

* Replace is_offline with num_connected

* Improve style of poll()

* Fix network tests

* Some doc in service module

* Remove macro export

* Minor doc changes

* Remove the synchronized() method of the import queue

* Line width

* Line widths

* Fix import queue tests

* Fix CLI tests

* Add a memory-only option for the network

* Tests cleanup

* Make grandpa/aura/babe compile

* Aura and Babe tests now passing

* More work on tests rewrite

* Attempt to fix grandpa

* Make more grandpa tests pass

* More grandpa tests work

* Work on sync tests

* More work

* light_peer_imports_header_from_announce passes

* can_sync_small_non_best_forks passes

* syncing_node_not_major_syncing_when_disconnected passes

* blocks_are_not_announced_by_light_nodes passing

* All sync tests passing 🎉

* Some TestNet cleanup

* Work on grandpa tests

* More grandpa work

* GrandPa work

* Add check about block_import

* Remove the temporarily added Sync

* Fix network tests warnings

* voter_persists_its_votes passes

* Fix imports in network tests

* Fix service tests

* Call on_block_imported 🤷

* Add shortcut

* Finish using shortcut

* Can now disable the keystore

* Fix service test

* Apply suggestions from code review

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

* Fix cli

* Remove dependencies on tokio

* Make service not depend on tokio

* Fix service tests

* Manually poll the import queue if failed to start

* Spawn all tasks at the end

* Remove executor from TelemetryOnConnect

* Remove TaskExecutor from offchain workers

* Remove TaskExecutor from AuthoritySetup

* Remove TaskExecutor from service

* Remove tokio dependency from RPC

* Remove finality-grandpa from WASM checks

* Fix offchain tests

* Line widths

* Fix RPC tests

* Fix service tests

* Fix bad futures polling

* Address some concerns

* Better error handling

* Is it the connectivity test that's not passing? I don't know, let's try

* Revert "Is it the connectivity test that's not passing? I don't know, let's try"

This reverts commit 28bbe51f.

* Fix test

* Move the network status reporting to the service

* Fix tests

* Fix build

* Rework RPC queries

* Remove SyncProvider trait

* Fix RPC tests

* Move the telemetry information to service

* Proper exit

* Fix tons of warnings in newest nightly

* Fix sr-api-macro doc tests

* Fix typos

* Add transaction factory

`cargo run -- purge-chain -y --chain dev && cargo run -- --dev --transaction-factory 10`

* Fix comment and remove build deps

* Move crate to test-utils

* Switch from flag to subcommand

`cargo run -- factory --dev --num 5`

* Decouple factory from node specifics

* Introduce different manufacturing modes

* Remove unrelated changes

* Update Cargo.lock

* Use SelectChain to fetch best block

* Improve expect proof

* Panic if factory executed with unsupported chain spec

* Link ToDo comments to follow-up ticket

* Address comments and improve style

* Remove unused dependencies

* Fix indent level

* Replace naked unwrap

* Update node/cli/src/factory_impl.rs

* Fix typo

* Use inherent_extrinsics instead of timestamp

* Generalize factory and remove saturated conversions

* Format imports

* Make it clearer that database needs to be empty

* Ensure factory settings

* Apply suggestions from code review

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

* Update test-utils/transaction-factory/src/lib.rs

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

* Fix match guard syntax

* Simplify import, remove empty line

* Update node/cli/Cargo.toml

* Update lockfile

* Silence known deprecation warnings

1. Prefixes known instances of usages of client.backend and client.import_lock with `#[allow(deprecated)]` to silence the warnings. 2. Remove file-global `#![allow(deprecated)]` used in these cases. Both to prevent us overlooking externally caused deprecation messages.

* fixing missing ;

* fix missing test cases

* move deprecated markers to make CI happy

* move deprecated markers to make CI happy

* attempt to fix the test

* bumping impl_version of node runtime

* Minor cleanup

* Remove error_chain

* Expunge error-chain from rpc and service.

* Expunge from transaction pool.

* Expunge from node/cli

* Expunge from keystore.

* Remove some boilerplate.

* Fix remaining stuff.

* Improve on deprecation message.

* Fix issues.

* Fix trnsaction pool tests.

* Fix the rest.

* Fix borked merge.

* Update lock

* core: allow setting max ws rpc connections

* style: break long lines

* core: fix service tests

* Remove TaskExecutor from the API of the informant

* Fix node-template

* Start to remove the `As` bound on `SimpleArtithmetic`

This just introduces standard numeric bounds, assuming a minimum of
`u32`. Also included is a saturating from/into trait allowing ergonomic
infallible conversion when you don't care if it saturates.

* Remove As from Balances trait

* Remove As from Aura module

* Remove As from Babe module

* Expunge `As` from contract

* Council module

* Democracy

* Finality tracker

* Grandpa

* First bit of indices

* indices

* Line lengths

* session

* system

* Staking

* Square up all other uses of As.

* RHD update

* Fix build/test

* Remove As trait

* line widths

* Remove final As ref

* Update srml/staking/src/lib.rs

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

* Update core/client/src/cht.rs

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

* Update core/client/db/src/light.rs

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

* Apply suggestions from code review

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

* whitespace

* Apply suggestions from code review

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

* Bring back u32 check for number on CLI

* Update to libp2p 0.8

* Fix CLI tests

* Zeroize

* Add tty password input

* Move password from core/service to core/cli

* Fix test build error

* Password should be entered only once if it's for decoding

* Update Cargo.lock from rebuild

* bump crates to v2.0.0

* fix crate authors

* bump node runtime spec_version

* remove unused import for no-std

* Imply forced authoring on --dev

* Combine conditionals

* Fix typos

* Align properly

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

Co-Authored-By: cmichi <[email protected]>

* Update core/network/src/test/mod.rs

Co-Authored-By: cmichi <[email protected]>

* Update core/finality-grandpa/src/communication/mod.rs

Co-Authored-By: cmichi <[email protected]>

* Update core/consensus/common/src/import_queue.rs

Co-Authored-By: cmichi <[email protected]>

* WiP: HTTP Apis.

* Working on the API.

* Add docs, clean up the API.

* Expose ext_ stuff as well.

* Implement HTTP helpers for offchain sr-io.

* Remove HTTP stuff.

* Remove spurious leading `::`

Co-Authored-By: DemiMarie-parity <[email protected]>

* Rename in toml.

* Add issue number.

* Bump version.

* Allow configuring state cache size via cli

* Track used cache size

* Expose memory counter to informant

* Enforce max cache size constraint exactly

* Default to 64 MiB

Co-Authored-By: cmichi <[email protected]>

* Remove self as parameter

* change NetworkState from string to json in telemetry

* Disable cors in dev mode,

* Whitelist substrate-ui.

* Fix build.

* Update docs.

* WIP: convert client error

* Remove error_chain for client error

* Ignore tx-pool error deprecation warning

* Update Cargo.lock files

* Fix tests

* Increment impl_version

* Derive From impls, remove allow(missing_docs)

* Remove space

* Remove redundant into()s

* Blockchain Error source

* Bump impl version