* client/authority-discovery: Instrument code with Prometheus

Introduce Prometheus metrics into the authority discovery module
enabling one to observe:

- authority_discovery_times_published_total

- authority_discovery_amount_external_addresses_last_published

- authority_discovery_times_requested_total

- authority_discovery_dht_event_received

* client/authority-discovery/src/lib.rs: Reword metric help texts

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

* client/authority-discovery/src/lib.rs: Reword metric help text

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

* client/authority-discovery/tests: Fix struct instantiation + basic test

Co-authored-by: Ashley <[email protected]>

* Minor fixes for Android

* Update parity-multiaddr

* Bump in service Cargo.toml too

* Update to libp2p 0.16.2

* Use libp2ps implementation of a wasm websocket transport

* Remove explicit Configuration type in node-cli

Co-authored-by: Pierre Krieger <[email protected]>

* Don't include `:code` by default in storage proofs (#5060)

* Adds test to verify that the runtime currently is always contained in
the proof

* Start passing the runtime wasm code from the outside

* Fix compilation

* More build fixes

* Make the test work as expected now :)

* Last fixes

* Fixes benchmarks

* Review feedback

* Apply suggestions from code review

Co-Authored-By: Sergei Pepyakin <[email protected]>

* Review feedback

* Fix compilation

Co-authored-by: Sergei Pepyakin <[email protected]>

* Fix compilation and change the way `RuntimeCode` works

* Fix tests

* Switch to `Cow`

Co-authored-by: Benjamin Kampmann <[email protected]>
Co-authored-by: Sergei Pepyakin <[email protected]>

* offchain: Simplify bits of http code

* offchain: Sort dev-dependencies

* deps: Bump parity-multiaddr to 0.7.3

Fixes build failure when using:
rustc 1.43.0-nightly (96bb8b31c 2020-03-05).

* offchain: Raise FD limit for HTTP tests

* offchain: Reword the comment on increasing the test fd limit

* client/network-gossip: Merge GossipEngine and GossipEngineInner

Given that GossipEngine and GossipEngineInner are not shared between
threads anyone (public interface + background tasks), neither depends on
being Send or Sync. Thus one can merge the two as done in this patch.
One only needs to wrap an `Arc<Mutex<>>` around the whole structure when
the owner (e.g. finality-grandpa) needs to share the gossip engine
between threads.

* client/finality-grandpa: Wrap GossipEngine in Arc Mutex & lock it on use

GossipEngine in itself has no need to be Send and Sync, given that it
does not rely on separately spawned background tasks anymore. Given that
finality-grandpa shares the `NetworkBridge` potentially between threads
its components need to be clonable, thus this patch wraps `GossipEngine`
in an `Arc<Mutex<>>`.

* Init macro

* Refactor function.

* Add feature

* vested transfer benchmark

* Fix features

* Forgot to push this fix

* bump impl

* Nits.

Co-authored-by: Shawn Tabrizi <[email protected]>

* Revert "use fixed quote (#5135)"

This reverts commit bea883b3

.

* Upgrade failure version

* Update frame/staking/reward-curve/Cargo.toml

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

* Ahh I'm dumb

Co-authored-by: Gavin Wood <[email protected]>
Co-authored-by: André Silva <[email protected]>

* removes use of sc_client::Client from sc-rpc

* remove Client impl from sc-finality-benches

* remove client impl from sc-finality-grandpa

* read_proof accepts iterator

* remove generic Executor param from ExecutorProvider

* fix long ass line

* code style changes

* merge with master

Co-authored-by: Arkadiy Paronyan <[email protected]>

* Wasm instance cache

* Reduce slot locking

* Fixed test

* Dispose of instance in case of error

* Fixed benches

* Style, comments, some renames

* Replaced upgradable lock with mutex

* Bump dependencies

* Re-export CallInWasm

* Update client/executor/src/wasm_runtime.rs

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

* Update client/executor/src/native_executor.rs

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

* Update client/executor/src/native_executor.rs

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

* Update client/executor/src/wasm_runtime.rs

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

* Update client/executor/wasmtime/src/runtime.rs

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

* Update client/executor/src/wasm_runtime.rs

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

* Update client/executor/src/wasm_runtime.rs

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

* Update client/executor/src/wasm_runtime.rs

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

* Indents

* Whitespace

* Formatting

* Added issue link

Co-authored-by: Benjamin Kampmann <[email protected]>
Co-authored-by: Gavin Wood <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>

* Add a few metrics to Client

* Improve PrometheusConfig

* Fix client docs

This reverts commit a193a19d.

This adds support for enabling features in the wasm build. The `default` and
`std` feature are ignored in the build.

This reduces the usage of `Blake2Hasher` in the code base and replaces
it with `BlakeTwo256`. The most important change is the removal of the
custom extern function for `Blake2Hasher`. The runtime `Hash` trait is
now also simplified and directly requires that the implementing type
implements `Hashable`.

* Adds test to verify that the runtime currently is always contained in
the proof

* Start passing the runtime wasm code from the outside

* Fix compilation

* More build fixes

* Make the test work as expected now :)

* Last fixes

* Fixes benchmarks

* Review feedback

* Apply suggestions from code review

Co-Authored-By: Sergei Pepyakin <[email protected]>

* Review feedback

* Fix compilation

Co-authored-by: Sergei Pepyakin <[email protected]>

* Benchmark pallet

* Add a bunch more benchmarks

* do nothing test

* new benchmarks

* Clean up extra tests

* Encode and Decode Vec<T::AccountId>

* Starting to migrate benchmarks to macro

* Use macro

* Remove call and storage

* Update Cargo.toml

* Add storage recalc benchmark

* Add support for custom functions in benchmark! macro

* Reset DB for storage recalc

* Feedback from review

* Add more comments

* Remove benchmark pallet from node

* Fix cargo files

* Fix comments

* Change `crate` to `super`

* missed one

* Use results of benchmark encode/decode

* Pass generic to extra functions

* reset macro to master

* Update lib.rs

* Update to use standard syntax

* Init allowing non dispatchable closure to be benchmarked.

* Remove example, add it in timestamp

* Fix nits.

* Move test to example.

* Update frame/example/src/lib.rs

Co-Authored-By: Shawn Tabrizi <[email protected]>

* Update frame/example/src/lib.rs

Co-Authored-By: Shawn Tabrizi <[email protected]>

* Apply review suggestion: move test to benchmarking crate.

* Update frame/benchmarking/src/lib.rs

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

* Remove unused imports.

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: Benjamin Kampmann <[email protected]>

This updates `parity-scale-codec` to `1.2.0`, which includes multiple
performance improvements and a fix that bounds the capacity of a vector
at decoding.

* Add a few things

* Add finality_grandpa_round

* fix fg tests

* Nitpicks

* Nitpicks

* Fix name of prometheus crate

This exposes memory statistics from the state-db.

* Start removing last few instances of futures01

* Use to_poll on wasm

* Revert "Use to_poll on wasm"

This reverts commit 1c61728f

.

* Fix fg test

* Upgrade network test futures

* Update offchain hyper version

* Update service test

* bump tokio to 0.2.10

* Removed some unneeded tokios

* fixes

* fix run_until_all_full

* Make service test debuggable

* Update client/offchain/src/api/http.rs

Co-Authored-By: Demi Obenour <[email protected]>

* Add service_test to test-int output

* nitpicking

* Finally fix test

* Give up and revert client/serviec/test

* Revert gitlab ci too

Co-authored-by: Demi Obenour <[email protected]>

* Propagate DispatchError for benchmarks.

* Apply review suggestions.

* Use RuntimeString.

* fix expect

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

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

* Bump to alpha.3

* update gitlab-ci

This patch renames the crate for the following two reasons:

1. The prometheus-exporter crate introduces native in-process Prometheus
style instrumentation to the Substrate project. Within the Prometheus
ecosystem the term "exporter" is used for external processes exposing
metrics for e.g. the Linux Kernel. In-process exposition would be
described via the term "endpoint".

2. "prometheus-exporter" is generic and ignores the fact that it is only
usable within the context of Substrate. In addition the name
"prometheus-exporter" is already taken on crates.io.

* removes use of sc-client from sc-basic-authorship

* refactor use of ProposerFactory

* correct dep path

* setting first batch of descriptions

* fix what I just broke

* next batch

* and pallets, too

* last batch

* set cargo.lock

* keep'em dev-deps

* bump version to alpha.2

* repro ui bug

* fix the tests

* test with the new image

* test without CARGO_HOME

* test without fixes

* test again

* fix trybuild old versions

* bump CArgo.lock

* fix trybuild newest versions

* bump Cargo.lock

* trying on the latest image

* bump Cargo.lock

* run with the old image

* ci will be green on the image from 2020-02-19 [skip ci]

* bump Cargo.lock

bump version to -alpha.1

* Remove indices from node-template

* Use identity lookup instead

* Bump impl

* clean cargo.toml

* adding unleash to ci

* fixing formatting

* with a dot please

* alpha.3 now

* do not publish testing helpers

* remove old test-helpers cruft

* fix cargo.lock

* with alpha 4

* do not publish runtime-interface-test either

* disable more test crates from publishing

* switch to alpha.5

* replace tempdir with tempfile

* update lru

* switch to bytes 0.5

* release script fixes

* switch on and to latest alpha

* BUT THE SPACES

* setting versions to development pre-release

fixing version in dependencies

* unset already released wasm-builder

* do not publish test crates

* adding licenses

* setting homepage metadata

* set repository url

Related to #4776 
Related to https://github.com/paritytech/polkadot/pull/832

To summarize the changes:
1. I did not manage to validate with types the service's Configuration. But I did reduce the possibility of errors by moving all the "fill" functions to their respective structopts
2. I split params.rs to multiple modules: one module params for just CLI parameters and one module commands for CLI subcommands (and RunCmd). Every command and params are in their own file so things are grouped better together and easier to remove
3. I removed the run and run_subcommand helpers as they are not helping much anymore. Running a command is always a set of 3 commands: 1. init 2. update config 3. run. This still allow the user to change the config before arguments get parsed or right after.
4. I added tests for all subcommands.
5. [deleted]

Overall the aim is to improve the situation with the Configuration and the optional parameters, add tests, make the API more consistent and simpler.

* Open one substream for each notifications protocol

* Fix WASM build

* Apply suggestions from code review

Co-Authored-By: Toralf Wittner <[email protected]>

* Address concerns

* Use unsigned-varint to read the varint

* Use unsigned-varint

* Forgot Cargo.lock

Co-authored-by: Toralf Wittner <[email protected]>

* MAcro benchamrks

* Iterative macro

* Tidying it up.

* Macro improvements

* Bits..

* Last benchmaks.

* Repo benchmark macro

* Add the possibility of evaluating arbitrary expressions in a
benchmaark

* Better syntax and docs

* Update `BenchmarkParameter`

* Add `ignore` to sudo-code in docs

* First try of timestamp implementation.

* Fix macro docs, remove warnings.

* Use macro in balances pallet.

* Make some space in frame benchmarking.

* Remove _benchmarks_seed variable.

* Bump impl_version.

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: Marcio Diaz <[email protected]>

* Make unsigned also note weight

* Bump.

* Fix tests

* Better fee test

* Fix another test

* Update lock file

* Example of offchain worker pallet.

* Fix compilation issues.

* Use serde_json to parse JSON.

* Add some basic tests.

* Working on docs.

* Fix compilation

* Finish docs for signed.

* Work on unsigned send.

* Add some tests and missing docs.

* Add example of StorageValueRef

* Add weight.

* Extra \n

* Fix im-online test.

* Bump runtime.

* Fix tests.

* Apply suggestions from code review

Co-Authored-By: Joshy Orndorff <[email protected]>
Co-Authored-By: Gavin Wood <[email protected]>

* Address review comments.

Co-authored-by: Joshy Orndorff <[email protected]>
Co-authored-by: Gavin Wood <[email protected]>