Commit Graph

25 Commits

Author SHA1 Message Date
Paul Hauner
b73c497be2 Support multiple BLS implementations (#1335)
## Issue Addressed

NA

## Proposed Changes

- Refactor the `bls` crate to support multiple BLS "backends" (e.g., milagro, blst, etc).
- Removes some duplicate, unused code in `common/rest_types/src/validator.rs`.
- Removes the old "upgrade legacy keypairs" functionality (these were unencrypted keys that haven't been supported for a few testnets, no one should be using them anymore).

## Additional Info

Most of the files changed are just inconsequential changes to function names.

## TODO

- [x] Optimization levels
- [x] Infinity point: https://github.com/supranational/blst/issues/11
- [x] Ensure milagro *and* blst are tested via CI
- [x] What to do with unsafe code?
- [x] Test infinity point in signature sets
2020-07-25 02:03:18 +00:00
Michael Sproul
393782f632 Prefer viable nightly Rust builds for CI (#1379)
## Proposed Changes

CI is failing on PRs because of a regression in nightly Rust. This change forces `rustup` to install a version of the nightly compiler that can at least build `rustfmt`, which should reduce the frequency of this happening.

## Additional Info

Example failing run: https://github.com/sigp/lighthouse/runs/896694659

Alternatively, we could allow CI to succeed even when `cargo-udeps` fails, but I think we should avoid doing that unless we really have to.
2020-07-22 07:34:30 +00:00
Michael Sproul
2870172e0d Deny warnings on CI (#1372)
## Issue Addressed

Prevent CI from succeeding when there are warnings. Code can still be built and tested with warnings locally, but CI may fail during a Rust update (which is fine IMO).

## Proposed Changes

* Deny warnings for all stable compiler jobs on CI (excludes `cargo udeps`, which runs under nightly)
* Fix the warnings currently on `master` related to unnecessary `mem::replace`
2020-07-21 05:51:33 +00:00
Adam Szkoda
e8d5d37bc1 Tune CI (#1344)
`pr/*` branches now trigger CI before creating a PR to avoid submitting PR with failing tests.

Details in the commit messages.
2020-07-09 09:23:28 +00:00
Adam Szkoda
559b7c8faa Fix bors timeouts (#1341)
... by moving "license/cla" from `status` to `pr_status` in `bors.toml`.
2020-07-07 13:44:35 +00:00
Adam Szkoda
51fbaefe41 Add bors configuration (#1340)
Melded together stuff from https://github.com/sigp/lighthouse/pull/1326 and https://github.com/sigp/lighthouse/pull/1337.

Note that I've reduced the timeout to 2 hours to save some time in case the build gets stuck.

Co-authored-by: Michael Sproul <michael@sigmaprime.io>
2020-07-07 06:31:20 +00:00
Michael Sproul
7818447fd2
Check for unused deps in CI (#1262)
* Check for unused deps in CI

* Bump slashing protection parking_lot version
2020-06-14 10:59:50 +10:00
Paul Hauner
723c7cbd27
Ensure new health endpoint builds on MacOS (#1215)
* Add mac build to CI

* Always return an error for Health when not linux

* Change macos workflow

* Rename macos tests

* Disable health API test on Mac

Co-authored-by: Michael Sproul <michael@sigmaprime.io>
2020-06-01 21:18:31 +10:00
Paul Hauner
8bc82c573d
Update local testnet scripts, fix eth1 sim (#1184)
* Update local testnet scripts

* Add logs when decrypting validators

* Update comment

* Update account manager

* Make random key generation explicit

* Remove unnecessary clap constraint

* Only decrypt voting keypair for eth1 deposit

* Use insecure kdf for insecure keypairs

* Simplify local testnet keygen

* Update local testnet

* Fix eth1 sim

* Add eth1 sim to CI again

* Remove old local testnet docs

* Tidy

* Remove checks for existing validators

* Tidy

* Fix typos
2020-05-26 18:30:44 +10:00
Mehdi Zerouali
d41a9f7aa6
Add cargo audit to CI (#1192) 2020-05-26 17:04:39 +10:00
Age Manning
309cd95b2c
Update work-flow for pull_request (#1156)
* Update work-flow for pull_request

* Update to push for master
2020-05-19 13:17:49 +10:00
Paul Hauner
c571afb8d8
Wallet-based, encrypted key management (#1138)
* Update hashmap hashset to stable futures

* Adds panic test to hashset delay

* Port remote_beacon_node to stable futures

* Fix lcli merge conflicts

* Non rpc stuff compiles

* Remove padding

* Add error enum, zeroize more things

* Fix comment

* protocol.rs compiles

* Port websockets, timer and notifier to stable futures (#1035)

* Fix lcli

* Port timer to stable futures

* Fix timer

* Port websocket_server to stable futures

* Port notifier to stable futures

* Add TODOS

* Port remote_beacon_node to stable futures

* Partial eth2-libp2p stable future upgrade

* Finished first round of fighting RPC types

* Further progress towards porting eth2-libp2p adds caching to discovery

* Update behaviour

* Add keystore builder

* Remove keystore stuff from val client

* Add more tests, comments

* RPC handler to stable futures

* Update RPC to master libp2p

* Add more comments, test vectors

* Network service additions

* Progress on improving JSON validation

* More JSON verification

* Start moving JSON into own mod

* Remove old code

* Add more tests, reader/writers

* Tidy

* Move keystore into own file

* Move more logic into keystore file

* Tidy

* Tidy

* Fix the fallback transport construction (#1102)

* Allow for odd-character hex

* Correct warning

* Remove hashmap delay

* Compiling version of eth2-libp2p

* Update all crates versions

* Fix conversion function and add tests (#1113)

* Add more json missing field checks

* Use scrypt by default

* Tidy, address comments

* Test path and uuid in vectors

* Fix comment

* Add checks for kdf params

* Enforce empty kdf message

* Port validator_client to stable futures (#1114)

* Add PH & MS slot clock changes

* Account for genesis time

* Add progress on duties refactor

* Add simple is_aggregator bool to val subscription

* Start work on attestation_verification.rs

* Add progress on ObservedAttestations

* Progress with ObservedAttestations

* Fix tests

* Add observed attestations to the beacon chain

* Add attestation observation to processing code

* Add progress on attestation verification

* Add first draft of ObservedAttesters

* Add more tests

* Add observed attesters to beacon chain

* Add observers to attestation processing

* Add more attestation verification

* Create ObservedAggregators map

* Remove commented-out code

* Add observed aggregators into chain

* Add progress

* Finish adding features to attestation verification

* Ensure beacon chain compiles

* Link attn verification into chain

* Integrate new attn verification in chain

* Remove old attestation processing code

* Start trying to fix beacon_chain tests

* Split adding into pools into two functions

* Add aggregation to harness

* Get test harness working again

* Adjust the number of aggregators for test harness

* Fix edge-case in harness

* Integrate new attn processing in network

* Fix compile bug in validator_client

* Update validator API endpoints

* Fix aggreagation in test harness

* Fix enum thing

* Fix attestation observation bug:

* Patch failing API tests

* Start adding comments to attestation verification

* Remove unused attestation field

* Unify "is block known" logic

* Update comments

* Supress fork choice errors for network processing

* Add todos

* Tidy

* Add gossip attn tests

* Disallow test harness to produce old attns

* Comment out in-progress tests

* Partially address pruning tests

* Fix failing store test

* Add aggregate tests

* Add comments about which spec conditions we check

* Dont re-aggregate

* Split apart test harness attn production

* Fix compile error in network

* Make progress on commented-out test

* Fix skipping attestation test

* Add fork choice verification tests

* Tidy attn tests, remove dead code

* Remove some accidentally added code

* Fix clippy lint

* Rename test file

* Add block tests, add cheap block proposer check

* Rename block testing file

* Add observed_block_producers

* Tidy

* Switch around block signature verification

* Finish block testing

* Remove gossip from signature tests

* First pass of self review

* Fix deviation in spec

* Update test spec tags

* Start moving over to hashset

* Finish moving observed attesters to hashmap

* Move aggregation pool over to hashmap

* Make fc attn borrow again

* Fix rest_api compile error

* Fix missing comments

* Fix monster test

* Uncomment increasing slots test

* Address remaining comments

* Remove unsafe, use cfg test

* Remove cfg test flag

* Fix dodgy comment

* Revert "Update hashmap hashset to stable futures"

This reverts commit d432378a3cc5cd67fc29c0b15b96b886c1323554.

* Revert "Adds panic test to hashset delay"

This reverts commit 281502396fc5b90d9c421a309c2c056982c9525b.

* Ported attestation_service

* Ported duties_service

* Ported fork_service

* More ports

* Port block_service

* Minor fixes

* VC compiles

* Update TODOS

* Borrow self where possible

* Ignore aggregates that are already known.

* Unify aggregator modulo logic

* Fix typo in logs

* Refactor validator subscription logic

* Avoid reproducing selection proof

* Skip HTTP call if no subscriptions

* Rename DutyAndState -> DutyAndProof

* Tidy logs

* Print root as dbg

* Fix compile errors in tests

* Fix compile error in test

* Re-Fix attestation and duties service

* Minor fixes

Co-authored-by: Paul Hauner <paul@paulhauner.com>

* Expose json_keystore mod

* First commits on path derivation

* Progress with implementation

* More progress

* Passing intermediate test vectors

* Tidy, add comments

* Add DerivedKey structs

* Move key derivation into own crate

* Add zeroize structs

* Return error for empty seed

* Add tests

* Tidy

* First commits on path derivation

* Progress with implementation

* Move key derivation into own crate

* Start defining JSON wallet

* Add progress

* Split out encrypt/decrypt

* First commits on path derivation

* Progress with implementation

* More progress

* Passing intermediate test vectors

* Tidy, add comments

* Add DerivedKey structs

* Move key derivation into own crate

* Add zeroize structs

* Return error for empty seed

* Add tests

* Tidy

* Add progress

* Replace some password usage with slice

* First commits on path derivation

* Progress with implementation

* More progress

* Passing intermediate test vectors

* Tidy, add comments

* Add DerivedKey structs

* Move key derivation into own crate

* Add zeroize structs

* Return error for empty seed

* Add tests

* Tidy

* Add progress

* Expose PlainText struct

* First commits on path derivation

* Progress with implementation

* More progress

* Passing intermediate test vectors

* Tidy, add comments

* Add DerivedKey structs

* Move key derivation into own crate

* Add zeroize structs

* Return error for empty seed

* Add tests

* Tidy

* Add builder

* Expose consts, remove Password

* Minor progress

* Expose SALT_SIZE

* First compiling version

* Add test vectors

* Network crate update to stable futures

* Move dbg assert statement

* Port account_manager to stable futures (#1121)

* Port account_manager to stable futures

* Run async fns in tokio environment

* Port rest_api crate to stable futures (#1118)

* Port rest_api lib to stable futures

* Reduce tokio features

* Update notifier to stable futures

* Builder update

* Further updates

* Add mnemonic, tidy

* Convert self referential async functions

* Tidy

* Add testing

* Add first attempt at validator_dir

* Present pubkey field

* stable futures fixes (#1124)

* Fix eth1 update functions

* Fix genesis and client

* Fix beacon node lib

* Return appropriate runtimes from environment

* Fix test rig

* Refactor eth1 service update

* Upgrade simulator to stable futures

* Lighthouse compiles on stable futures

* Add first pass of wallet manager

* Progress with CLI

* Remove println debugging statement

* Tidy output

* Tidy 600 perms

* Update libp2p service, start rpc test upgrade

* Add validator creation flow

* Update network crate for new libp2p

* Start tidying, adding comments

* Update tokio::codec to futures_codec (#1128)

* Further work towards RPC corrections

* Correct http timeout and network service select

* Add wallet mgr testing

* Shift LockedWallet into own file

* Add comments to fs

* Start integration into VC

* Use tokio runtime for libp2p

* Revert "Update tokio::codec to futures_codec (#1128)"

This reverts commit e57aea924acf5cbabdcea18895ac07e38a425ed7.

* Upgrade RPC libp2p tests

* Upgrade secio fallback test

* Add lcli keypair upgrade command

* Upgrade gossipsub examples

* Clean up RPC protocol

* Test fixes (#1133)

* Correct websocket timeout and run on os thread

* Fix network test

* Add --secrets-dir to VC

* Remove --legacy-keys from VC

* Clean up PR

* Correct tokio tcp move attestation service tests

* Upgrade attestation service tests

* Fix sim

* Correct network test

* Correct genesis test

* Start docs

* Add progress for validator generation

* Tidy error messages

* Test corrections

* Log info when block is received

* Modify logs and update attester service events

* Stable futures: fixes to vc, eth1 and account manager (#1142)

* Add local testnet scripts

* Remove whiteblock script

* Rename local testnet script

* Move spawns onto handle

* Fix VC panic

* Initial fix to block production issue

* Tidy block producer fix

* Tidy further

* Add local testnet clean script

* Run cargo fmt

* Tidy duties service

* Tidy fork service

* Tidy ForkService

* Tidy AttestationService

* Tidy notifier

* Ensure await is not suppressed in eth1

* Ensure await is not suppressed in account_manager

* Use .ok() instead of .unwrap_or(())

* RPC decoding test for proto

* Update discv5 and eth2-libp2p deps

* Run cargo fmt

* Pre-build keystores for sim

* Fix lcli double runtime issue (#1144)

* Handle stream termination and dialing peer errors

* Correct peer_info variant types

* Add progress on new deposit flow

* Remove unnecessary warnings

* Handle subnet unsubscription removal and improve logigng

* Add logs around ping

* Upgrade discv5 and improve logging

* Handle peer connection status for multiple connections

* Improve network service logging

* Add more incomplete progress

* Improve logging around peer manager

* Upgrade swarm poll centralise peer management

* Identify clients on error

* Fix `remove_peer` in sync (#1150)

* remove_peer removes from all chains

* Remove logs

* Fix early return from loop

* Improved logging, fix panic

* Partially correct tests

* Add deposit command

* Remove old validator directory

* Start adding AM tests

* Stable futures: Vc sync (#1149)

* Improve syncing heuristic

* Add comments

* Use safer method for tolerance

* Fix tests

* Binary testing progress

* Progress with CLI tests

* Use constants for flags

* More account manager testing

* Improve CLI tests

* Move upgrade-legacy-keypairs into account man

* Use rayon for VC key generation

* Add comments to `validator_dir`

* Add testing to validator_dir

* Add fix to eth1-sim

* Check errors in eth1-sim

* Fix mutability issue

* Ensure password file ends in .pass

* Add more tests to wallet manager

* Tidy deposit

* Tidy account manager

* Tidy account manager

* Remove panic

* Generate keypairs earlier in sim

* Tidy eth1-sime

* Try to fix eth1 sim

* Address review comments

* Fix typo in CLI command

* Update docs

* Disable eth1 sim

* Remove eth1 sim completely

Co-authored-by: Age Manning <Age@AgeManning.com>
Co-authored-by: pawanjay176 <pawandhananjay@gmail.com>
2020-05-18 19:01:45 +10:00
Michael Sproul
338cb2fba7
Fix parallelism bug in exit processing (#1110)
* Fix parallelism bug in exit processing

Also:

* Remove parallelism for all other operations except deposit merkle proofs
* Improve exit tests
* Fix broken attestation test

Closes #1090

* Allow for generating block/pre/post states from some unit tests (#1123)

* Add post-state checks, comments

* Add state_transition_vectors crate

* Integrate new testing crate with CI

* Add readme

* Add additional valid tests

* Remove ExitTests (they were moved to new crate)

* Small test fixes

* Delete incorrect saturating_sub in slash_validator

And clean-up the balance increase/decrease functions to look more like the spec.

Co-authored-by: Paul Hauner <paul@paulhauner.com>
2020-05-09 09:37:21 +10:00
Kirk Baird
611a0c7d19
Arbitrary trait for eth2/types (#1040)
* Add the arbitrary type to eth2/types and their deps

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Wrap arbitrary in a feature flag

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Fix feature for types

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Fix comment

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Patch versioning

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Allow expanded crate reference for arbitrary 0.4.3

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Add arbitrary to remaining types

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* use cmp::min

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Derive Arbitrary trait for ValidatorStatus, TotalBalances and InclusionInfo

* Add CI check for state processing arbitrary faetures

Signed-off-by: Kirk Baird <baird.k@outlook.com>

* Fix indentation

Signed-off-by: Kirk Baird <baird.k@outlook.com>

Co-authored-by: Mehdi Zerouali <mehdi@sigmaprime.io>
2020-05-06 09:12:28 +10:00
Age Manning
ca538e887e
Cleanup v0.2.0 2020-04-22 01:31:07 +10:00
Age Manning
9e416a9bcd
Merge latest master 2020-04-22 01:05:46 +10:00
Michael Sproul
32074f0d09
Use checked arithmetic in types and state proc (#1009) 2020-04-20 12:35:11 +10:00
Paul Hauner
7b86c9a08f
Update testnet tooling (#1001)
* Add progress on new deposits

* Add deposited command to account manager

* Remove old lcli::helpers mod

* Clean clap_utils

* Refactor lcli deposit contract commands to use IPC

* Make testnet optional for environment

* Use dbg formatting for deploy address

* Add command to generate bootnode enr

* Ensure lcli returns with 1 on error

* Ensure account manager returns 1 on error

* Disallow deposits to the zero address

* Update web3 in eth1 crate

* Ensure correct lighthouse dir is created

* Reduce deposit gas requirement

* Update cargo.lock

* Add progress on new deposits

* Add deposited command to account manager

* Remove old lcli::helpers mod

* Clean clap_utils

* Refactor lcli deposit contract commands to use IPC

* Add command to generate bootnode enr

* Ensure lcli returns with 1 on error

* Ensure account manager returns 1 on error

* Update web3 in eth1 crate

* Update Cargo.lock

* Move lcli out of main install script

* Change --limit to --at-least

* Change --datadir to --validator-dir

* Remove duplication in docs
2020-04-19 02:20:43 +00:00
Age Manning
1779aa6a8a
Merge latest master in v0.2.0 2020-04-08 16:46:37 +10:00
Michael Sproul
869b0621d6
Update benchmarks, add to CI (#988) 2020-04-06 20:16:08 +10:00
Paul Hauner
7305e9e5d9
Upgrade sim (#972)
* Add progress on duties refactor

* Add simple is_aggregator bool to val subscription

* Add the no-eth1-sim, refactor sim
2020-04-01 17:54:49 +11:00
Pawan Dhananjay
89f05e4a4f Adds simulator for syncing (#758)
* Add CLI for beacon_chain_sim

* Rename beacon-chain-sim to simulator

* Fix simulator workflow

* Push Cargo.lock

* WIP syncing simulator

* Add cli args

* Remove eth1 stuff and deposits

* Add syncing strategy simulations

* Successful one node sync

* Clean up

* Rename to avoid confusion

* add command line args

* fix cargo fmt issues

* Add additional syncing strategies

* Run all syncing strategies one after other; add comments

* Improve cli argument parsing

* Change `end_after_checks` default to true

* Small modifications to syncing-sim

* Add `strategy` cli argument

* Documented defaults in cli help

Co-authored-by: mkinney <mike.kinney@gmail.com>
Co-authored-by: Age Manning <Age@AgeManning.com>
2020-01-23 18:07:39 +11:00
Paul Hauner
5e4cf2f3da
Add simulator to CI (#723)
* Add simulator to CI

* Install ganache before running sim
2019-12-17 08:48:20 +11:00
Age Manning
97aa8b75b8 Testnet compatible network upgrade (#587)
* Create libp2p instance

* Change logger to stdlog

* test_connection initial commit

* Add gossipsub test

* Delete tests in network crate

* Add test module

* Clean tests

* Remove dependency on discovery

* Working publish between 2 nodes
TODO: Publish should be called just once

* Working 2 peer gossipsub test with additional events

* Cleanup test

* Add rpc test

* Star topology discovery WIP

* build_nodes builds and connects n nodes. Increase nodes in gossipsub test

* Add unsubscribe method and expose reference to gossipsub object for gossipsub tests

* Add gossipsub message forwarding test

* Fix gossipsub forward test

* Test improvements
* Remove discovery tests
* Simplify gossipsub forward test topology
* Add helper functions for topology building

* Clean up tests

* Update naming to new network spec

* Correct ssz encoding of protocol names

* Further additions to network upgrade

* Initial network spec update WIP

* Temp commit

* Builds one side of the streamed RPC responses

* Temporary commit

* Propagates streaming changes up into message handler

* Intermediate network update

* Partial update in upgrading to the new network spec

* Update dependencies, remove redundant deps

* Correct sync manager for block stream handling

* Re-write of RPC handler, improves efficiency and corrects bugs

* Stream termination update

* Completed refactor of rpc handler

* Remove crates

* Correct compile issues associated with test merge

* Build basic tests and testing structure for eth2-libp2p

* Enhance RPC tests and add logging

* Complete RPC testing framework and STATUS test

* Decoding bug fixes, log improvements, stream test

* Clean up RPC handler logging

* Decoder bug fix, empty block stream test

* Add BlocksByRoot RPC test

* Add Goodbye RPC test

* Syncing and stream handling bug fixes and performance improvements

* Applies discv5 bug fixes

* Adds DHT IP filtering for lighthouse - currently disabled

* Adds randomized network propagation as a CLI arg

* Add disconnect functionality

* Adds attestation handling and parent lookup

* Adds RPC error handling for the sync manager

* Allow parent's blocks to be already processed

* Update github workflow

* Adds reviewer suggestions
2019-11-27 12:47:46 +11:00
Paul Hauner
78d82d9193
Validator client refactor (#618)
* Update to spec v0.9.0

* Update to v0.9.1

* Bump spec tags for v0.9.1

* Formatting, fix CI failures

* Resolve accidental KeyPair merge conflict

* Document new BeaconState functions

* Add `validator` changes from `validator-to-rest`

* Add initial (failing) REST api tests

* Fix signature parsing

* Add more tests

* Refactor http router

* Add working tests for publish beacon block

* Add validator duties tests

* Move account_manager under `lighthouse` binary

* Unify logfile handling in `environment` crate.

* Fix incorrect cache drops in `advance_caches`

* Update fork choice for v0.9.1

* Add `deposit_contract` crate

* Add progress on validator onboarding

* Add unfinished attesation code

* Update account manager CLI

* Write eth1 data file as hex string

* Integrate ValidatorDirectory with validator_client

* Move ValidatorDirectory into validator_client

* Clean up some FIXMEs

* Add beacon_chain_sim

* Fix a few docs/logs

* Expand `beacon_chain_sim`

* Fix spec for `beacon_chain_sim

* More testing for api

* Start work on attestation endpoint

* Reject empty attestations

* Allow attestations to genesis block

* Add working tests for `rest_api` validator endpoint

* Remove grpc from beacon_node

* Start heavy refactor of validator client

- Block production is working

* Prune old validator client files

* Start works on attestation service

* Add attestation service to validator client

* Use full pubkey for validator directories

* Add validator duties post endpoint

* Use par_iter for keypair generation

* Use bulk duties request in validator client

* Add version http endpoint tests

* Add interop keys and startup wait

* Ensure a prompt exit

* Add duties pruning

* Fix compile error in beacon node tests

* Add github workflow

* Modify rust.yaml

* Modify gitlab actions

* Add to CI file

* Add sudo to CI npm install

* Move cargo fmt to own job in tests

* Fix cargo fmt in CI

* Add rustup update before cargo fmt

* Change name of CI job

* Make other CI jobs require cargo fmt

* Add CI badge

* Remove gitlab and travis files

* Add different http timeout for debug

* Update docker file, use makefile in CI

* Use make in the dockerfile, skip the test

* Use the makefile for debug GI test

* Update book

* Tidy grpc and misc things

* Apply discv5 fixes

* Address other minor issues

* Fix warnings

* Attempt fix for addr parsing

* Tidy validator config, CLIs

* Tidy comments

* Tidy signing, reduce ForkService duplication

* Fail if skipping too many slots

* Set default recent genesis time to 0

* Add custom http timeout to validator

* Fix compile bug in node_test_rig

* Remove old bootstrap flag from val CLI

* Update docs

* Tidy val client

* Change val client log levels

* Add comments, more validity checks

* Fix compile error, add comments

* Undo changes to eth2-libp2p/src

* Reduce duplication of keypair generation

* Add more logging for validator duties

* Fix beacon_chain_sim, nitpicks

* Fix compile error, minor nits

* Address Michael's comments
2019-11-25 15:48:24 +11:00