Commit Graph

1664 Commits

Author SHA1 Message Date
Elizabeth
cb6f840d98 Statediffing geth
* Write state diff to CSV (#2)

* port statediff from 9b7fd9af80/statediff/statediff.go; minor fixes

* integrating state diff extracting, building, and persisting into geth processes

* work towards persisting created statediffs in ipfs; based off github.com/vulcanize/eth-block-extractor

* Add a state diff service

* Remove diff extractor from blockchain

* Update imports

* Move statediff on/off check to geth cmd config

* Update starting state diff service

* Add debugging logs for creating diff

* Add statediff extractor and builder tests and small refactoring

* Start to write statediff to a CSV

* Restructure statediff directory

* Pull CSV publishing methods into their own file

* Reformatting due to go fmt

* Add gomega to vendor dir

* Remove testing focuses

* Update statediff tests to use golang test pkg

instead of ginkgo

- builder_test
- extractor_test
- publisher_test

* Use hexutil.Encode instead of deprecated common.ToHex

* Remove OldValue from DiffBigInt and DiffUint64 fields

* Update builder test

* Remove old storage value from updated accounts

* Remove old values from created/deleted accounts

* Update publisher to account for only storing current account values

* Update service loop and fetching previous block

* Update testing

- remove statediff ginkgo test suite file
- move mocks to their own dir

* Updates per go fmt

* Updates to tests

* Pass statediff mode and path in through cli

* Return filename from publisher

* Remove some duplication in builder

* Remove code field from state diff output

this is the contract byte code, and it can still be obtained by querying
the db by the codeHash

* Consolidate acct diff structs for updated & updated/deleted accts

* Include block number in csv filename

* Clean up error logging

* Cleanup formatting, spelling, etc

* Address PR comments

* Add contract address and storage value to csv

* Refactor accumulating account row in csv publisher

* Add DiffStorage struct

* Add storage key to csv

* Address PR comments

* Fix publisher to include rows for accounts that don't have store updates

* Update builder test after merging in release/1.8

* Update test contract to include storage on contract intialization

- so that we're able to test that storage diffing works for created and
deleted accounts (not just updated accounts).

* Factor out a common trie iterator method in builder

* Apply goimports to statediff

* Apply gosimple changes to statediff

* Gracefully exit geth command(#4)

* Statediff for full node (#6)

* Open a trie from the in-memory database

* Use a node's LeafKey as an identifier instead of the address

It was proving difficult to find look the address up from a given path
with a full node (sometimes the value wouldn't exist in the disk db).
So, instead, for now we are using the node's LeafKey with is a Keccak256
hash of the address, so if we know the address we can figure out which
LeafKey it matches up to.

* Make sure that statediff has been processed before pruning

* Use blockchain stateCache.OpenTrie for storage diffs

* Clean up log lines and remove unnecessary fields from builder

* Apply go fmt changes

* Add a sleep to the blockchain test

* Address PR comments

* Address PR comments

* refactoring/reorganizing packages

* refactoring statediff builder and types and adjusted to relay proofs and paths (still need to make this optional)

* refactoring state diff service and adding api which allows for streaming state diff payloads over an rpc websocket subscription

* make proofs and paths optional + compress service loop into single for loop (may be missing something here)

* option to process intermediate nodes

* make state diff rlp serializable

* cli parameter to limit statediffing to select account addresses + test

* review fixes and fixes for issues ran into in integration

* review fixes; proper method signature for api; adjust service so that statediff processing is halted/paused until there is at least one subscriber listening for the results

* adjust buffering to improve stability; doc.go; fix notifier
err handling

* relay receipts with the rest of the data + review fixes/changes

* rpc method to get statediff at specific block; requires archival node or the block be within the pruning range

* review fixes

* fixes after rebase

* statediff verison meta

* fix linter issues

* include total difficulty to the payload

* fix state diff builder: emit actual leaf nodes instead of value nodes; diff on the leaf not on the value; emit correct path for intermediate nodes

* adjust statediff builder tests to changes and extend to test intermediate nodes; golint

* add genesis block to test; handle block 0 in StateDiffAt

* rlp files for mainnet blocks 0-3, for tests

* builder test on mainnet blocks

* common.BytesToHash(path) => crypto.Keaccak256(hash) in builder; BytesToHash produces same hash for e.g. []byte{} and []byte{\x00} - prefix \x00 steps are inconsequential to the hash result

* complete tests for early mainnet blocks

* diff type for representing deleted accounts

* fix builder so that we handle account deletions properly and properly diff storage when an account is moved to a new path; update params

* remove cli params; moving them to subscriber defined

* remove unneeded bc methods

* update service and api; statediffing params are now defined by user through api rather than by service provider by cli

* update top level tests

* add ability to watch specific storage slots (leaf keys) only

* comments; explain logic

* update mainnet blocks test

* update api_test.go

* storage leafkey filter test

* cleanup chain maker

* adjust chain maker for tests to add an empty account in block1 and switch to EIP-158 afterwards (now we just need to generate enough accounts until one causes the empty account to be touched and removed post-EIP-158 so we can simulate and test that process...); also added 2 new blocks where more contract storage is set and old slots are set to zero so they are removed so we can test that

* found an account whose creation causes the empty account to be moved to a new path; this should count as 'touching; the empty account and cause it to be removed according to eip-158... but it doesn't

* use new contract in unit tests that has self-destruct ability, so we can test eip-158 since simply moving an account to new path doesn't count as 'touchin' it

* handle storage deletions

* tests for eip-158 account removal and storage value deletions; there is one edge case left to test where we remove 1 account when only two exist such that the remaining account is moved up and replaces the root branch node

* finish testing known edge cases

* add endpoint to fetch all state and storage nodes at a given blockheight; useful for generating a recent atate cache/snapshot that we can diff forward from rather than needing to collect all diffs from genesis

* test for state trie builder

* minor changes/fixes

* update version meta

* if statediffing is on, lock tries in triedb until the statediffing service signals they are done using them

* update version meta

* fix mock blockchain; golint; bump patch

* increase maxRequestContentLength; bump patch

* log the sizes of the state objects we are sending

* CI build (#20)

* CI: run build on PR and on push to master

* CI: debug building geth

* CI: fix coping file

* CI: fix coping file v2

* CI: temporary upload file to release asset

* CI: get release upload_url by tag, upload asset to current relase

* CI: fix tag name

* fix ci build on statediff_at_anyblock-1.9.11 branch

* fix publishing assets in release

* bump version meta

* use context deadline for timeout in eth_call

* collect and emit codehash=>code mappings for state objects

* subscription endpoint for retrieving all the codehash=>code mappings that exist at provided height

* bump version meta

* Implement WriteStateDiffAt

* Writes state diffs directly to postgres

* Adds CLI flags to configure PG

* Refactors builder output with callbacks

* Copies refactored postgres handling code from ipld-eth-indexer

* rename PostgresCIDWriter.{index->upsert}*

* less ambiguous

* go.mod update

* rm unused

* cleanup

* output code & codehash iteratively

* had to rf some types for this

* prometheus metrics output

* duplicate recent eth-indexer changes

* migrations and metrics...

* [wip] prom.Init() here? another CLI flag?

* cleanup

* tidy & DRY

* statediff WriteLoop service + CLI flag

* [wip] update test mocks

* todo - do something meaningful to test write loop

* logging

* use geth log

* port tests to go testing

* drop ginkgo/gomega

* fix and cleanup tests

* fail before defer statement

* delete vendor/ dir

* unused

* bump version meta
2020-11-11 13:46:08 -06:00
mr_franklin
c37e68e7c1
all: replace RWMutex with Mutex in places where RLock is not used (#21622) 2020-10-13 10:58:41 +02:00
mr_franklin
66c3eb2f1a
accouts, consensus, core: fix some comments (#21617) 2020-10-12 15:02:38 +02:00
Martin Holst Swende
706f5e3b98
core: fix txpool off-by-one error (#21683) 2020-10-09 12:23:46 +03:00
Guillaume Ballet
43cd31ea9f
core/vm: dedup config check in markdown logger (#21655)
* core/vm: dedup config check

* review feedback: reuse buffer
2020-10-08 14:03:24 +02:00
Martin Holst Swende
e43d827a19
core/types: optimize bloom filters (#21624)
* core/types: tests for bloom

* core/types: refactored bloom filter for receipts, added tests

core/types: replaced old bloom implementation

core/types: change interface of bloom add+test

* core/types: refactor bloom

* core/types: minor tweak on LogsBloom

Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>
2020-10-06 16:57:00 +03:00
Martin Holst Swende
eb87121300
core/bloombits: faster generator (#21625)
* core/bloombits: add benchmark

* core/bloombits: optimize inserts
2020-10-06 16:34:29 +03:00
Péter Szilágyi
a15d71a255
core/state/snapshot: stop generator if it hits missing trie nodes (#21649)
* core/state/snapshot: exit Geth if generator hits missing trie nodes

* core/state/snapshot: error instead of hard die on generator fault

* core/state/snapshot: don't enable logging on the tests
2020-10-05 11:52:36 +03:00
Guillaume Ballet
6c8310ebb4
trie: use stacktrie for Derivesha operation (#21407)
core/types: use stacktrie for derivesha

trie: add stacktrie file

trie: fix linter

core/types: use stacktrie for derivesha

rebased: adapt stacktrie to the newer version of DeriveSha

Co-authored-by: Martin Holst Swende <martin@swende.se>

More linter fixes

review feedback: no key offset for nodes converted to hashes

trie: use EncodeRLP for full nodes

core/types: insert txs in order in derivesha

trie: tests for derivesha with stacktrie

trie: make stacktrie use pooled hashers

trie: make stacktrie reuse tmp slice space

trie: minor polishes on stacktrie

trie/stacktrie: less rlp dancing

core/types: explain the contorsions in DeriveSha

ci: fix goimport errors

trie: clear mem on subtrie hashing

squashme: linter fix

stracktrie: use pooling, less allocs (#3)

trie: in-place hex prefix, reduce allocs and add rawNode.EncodeRLP

Reintroduce the `[]node` method, add the missing `EncodeRLP` implementation for `rawNode` and calculate the hex prefix in place.

Co-authored-by: Martin Holst Swende <martin@swende.se>

Co-authored-by: Martin Holst Swende <martin@swende.se>
2020-09-29 17:38:13 +02:00
aaronbuchwald
eebfb13053
core: free pointer from slice after popping element from price heap (#21572)
* Fix potential memory leak in price heap

* core: nil free pointer slice (alternative version)

Co-authored-by: Martin Holst Swende <martin@swende.se>
2020-09-28 14:24:01 +02:00
Martin Holst Swende
0ddd4612b7
core/vm, params: make 2200 in line with spec (#21605) 2020-09-28 14:14:45 +02:00
rene
a25899f3dc
cmd/devp2p: add eth protocol test suite (#21598)
This change adds a test framework for the "eth" protocol and some basic
tests. The tests can be run using the './devp2p rlpx eth-test' command.
2020-09-23 15:18:17 +02:00
Guillaume Ballet
f354c622ca
core: fix a typo in comment (#21439) 2020-09-18 14:26:19 +02:00
Giuseppe Bertone
07751c3d26
cmd/geth: added counters to the geth inspect report (#21495)
* database: added counters

* Improved stats for ancient db

* Small improvement

* Better message and added percentage while counting receipts

* Fast counting for receipts

* added info message

* Show both receips itemscount  from ancient db and counted receipts

* Fixed default case

* Removed counter for receipts in ancient store

* Removed counting of receipts present in leveldb
2020-09-17 10:23:56 +02:00
Giuseppe Bertone
0185ee0993
core/rawdb: single point of maintenance for writing and deleting tx lookup indexes (#21480) 2020-09-15 10:37:01 +02:00
Martin Holst Swende
a3cd8a040a
core/vm: fix benchmark overflow + prep for precompile repricings (#21530)
* core/vm/testdata: add gascost expectations to testcases

* core/vm: verify expected gas in tests for precompiles

* core/vm: fix overflow flaw in gas/s calculation
2020-09-10 09:19:30 +02:00
Péter Szilágyi
eeaf191633
core, eth, trie: prepare trie sync for path based operation 2020-09-02 13:21:32 +03:00
Péter Szilágyi
d8da0b3d81
core/state, eth, trie: stabilize memory use, fix memory leak 2020-08-26 13:05:06 +03:00
Péter Szilágyi
5655dce3b8
core/rawdb: only complain loudly if truncating many items 2020-08-25 09:03:14 +03:00
Péter Szilágyi
3ee91b9f2e
core/state/snapshot: reduce disk layer depth during generation 2020-08-24 13:22:36 +03:00
Martin Holst Swende
1b5a867eec
core: do less lookups when writing fast-sync block bodies (#21468) 2020-08-22 18:12:04 +02:00
gary rong
87c0ba9213
core, eth, les, trie: add a prefix to contract code (#21080) 2020-08-21 15:10:40 +03:00
Péter Szilágyi
8cbdc8638f
core: define and test chain rewind corner cases (#21409)
* core: define and test chain reparation cornercases

* core: write up a variety of set-head tests

* core, eth: unify chain rollbacks, handle all the cases

* core: make linter smile

* core: remove commented out legacy code

* core, eth/downloader: fix review comments

* core: revert a removed recovery mechanism
2020-08-20 13:01:24 +03:00
Marius van der Wijden
0bdd295cc0
core: more detailed metering for reorgs (#21420) 2020-08-20 09:49:35 +02:00
Giuseppe Bertone
2ff464b29d
core/state: fixed some comments (#21450) 2020-08-19 09:54:21 +03:00
Péter Szilágyi
4fde0cabc1
Merge pull request #21411 from holiman/fix_codelookup
core/vm: avoid map lookups for accessing jumpdest analysis
2020-08-06 08:09:15 +03:00
Robert Zaremba
5a88a7cf5b
core: use errors.Is for consensus errors check (#21095) 2020-08-05 09:52:54 +02:00
Martin Holst Swende
8ead45c20b
core/vm: avoid map lookups for accessing jumpdest analysis 2020-08-04 15:45:35 +02:00
Hao Duan
b35e4fce99
core: avoid modification of accountSet cache in tx_pool (#21159)
* core: avoid modification of accountSet cache in tx_pool

when runReorg, we may copy the dirtyAccounts' accountSet cache to promoteAddrs
in which accounts will be promoted, however, if we have reset request at the
same time, we may reuse promoteAddrs and modify the cache content which is
against the original intention of accountSet cache. So, we need to make a new
slice here to avoid modify accountSet cache.

* core: fix flatten condition + comment

Co-authored-by: Felix Lange <fjl@twurst.com>
2020-08-04 11:51:53 +02:00
rene
c0c01612e9
node: refactor package node (#21105)
This PR significantly changes the APIs for instantiating Ethereum nodes in
a Go program. The new APIs are not backwards-compatible, but we feel that
this is made up for by the much simpler way of registering services on
node.Node. You can find more information and rationale in the design
document: https://gist.github.com/renaynay/5bec2de19fde66f4d04c535fd24f0775.

There is also a new feature in Node's Go API: it is now possible to
register arbitrary handlers on the user-facing HTTP server. In geth, this
facility is used to enable GraphQL.

There is a single minor change relevant for geth users in this PR: The
GraphQL API is no longer available separately from the JSON-RPC HTTP
server. If you want GraphQL, you need to enable it using the
./geth --http --graphql flag combination.

The --graphql.port and --graphql.addr flags are no longer available.
2020-08-03 19:40:46 +02:00
Péter Szilágyi
a00dc5095b
Merge pull request #21358 from hendrikhofstadt/fix/tx-sort-time
core: sort txs at the same gas price by received time
2020-07-30 10:23:36 +03:00
meowsbits
ff90894636
core/rawdb: convert some comments to godoc convention (#21384) 2020-07-29 21:53:59 +02:00
ucwong
9e04c5ec83
core/bloombits: use single channel for shutdown (#20878)
This replaces the two-stage shutdown scheme with the one we
use almost everywhere else: a single quit channel signalling
termination.

Co-authored-by: Felix Lange <fjl@twurst.com>
2020-07-29 13:49:12 +02:00
Péter Szilágyi
298a19bbc6
core: API-less transaction time sorting 2020-07-28 17:13:40 +03:00
Hendrik Hofstadt
c47052a580
core: sort txs at the same gas price by received time 2020-07-28 17:13:39 +03:00
gary rong
93da0cf8a1
cmd, core, eth, light, trie: dump clean cache periodically (#20391)
* cmd, core, eth, light, trie: dump clean cache periodically

* eth: update config

* trie: minor fix

* core, trie: address comments

* eth: remove useless

* trie: print clean cache dump start too

Co-authored-by: Péter Szilágyi <peterke@gmail.com>
2020-07-28 16:30:31 +03:00
Péter Szilágyi
6793ffa12b
Merge pull request #21300 from rjl493456442/txpool-fix-queued-evictions
core: fix queued transaction eviction
2020-07-24 11:14:42 +03:00
rjl493456442
5413df1dfa
core: fix heartbeat in txpool
core: address comment
2020-07-24 11:12:59 +03:00
villanuevawill
c374447401
core: fix queued transaction eviction
Solves issue#20582. Non-executable transactions should not be evicted on each tick if there are no promote transactions or if a pending/reset empties the pending list. Tests and logging expanded to handle these cases in the future.

core/tx_pool: use a ts for each tx in the queue, but only update the heartbeat on promotion or pending replaced

queuedTs proper naming
2020-07-24 11:11:57 +03:00
Martin Holst Swende
105922180f
eth/downloader: refactor downloader + queue (#21263)
* eth/downloader: refactor downloader + queue

downloader, fetcher: throttle-metrics, fetcher filter improvements, standalone resultcache

downloader: more accurate deliverytime calculation, less mem overhead in state requests

downloader/queue: increase underlying buffer of results, new throttle mechanism

eth/downloader: updates to tests

eth/downloader: fix up some review concerns

eth/downloader/queue: minor fixes

eth/downloader: minor fixes after review call

eth/downloader: testcases for queue.go

eth/downloader: minor change, don't set progress unless progress...

eth/downloader: fix flaw which prevented useless peers from being dropped

eth/downloader: try to fix tests

eth/downloader: verify non-deliveries against advertised remote head

eth/downloader: fix flaw with checking closed-status causing hang

eth/downloader: hashing avoidance

eth/downloader: review concerns + simplify resultcache and queue

eth/downloader: add back some locks, address review concerns

downloader/queue: fix remaining lock flaw

* eth/downloader: nitpick fixes

* eth/downloader: remove the *2*3/4 throttling threshold dance

* eth/downloader: print correct throttle threshold in stats

Co-authored-by: Péter Szilágyi <peterke@gmail.com>
2020-07-24 10:46:26 +03:00
Sammy Libre
7163a6664e
ethclient: serialize negative block number as "pending" (#21177)
Fixes #21175

Co-authored-by: sammy007 <sammy007@users.noreply.github.com>
Co-authored-by: Adam Schmideg <adamschmideg@users.noreply.github.com>
2020-07-21 10:51:15 +02:00
Péter Szilágyi
508891e64b
core/vm: use pointers to operations vs. copy by value 2020-07-16 15:32:01 +03:00
Nikola Madjarevic
9e88224eb8
core: raise gas limit in --dev mode, seed blake precompile (#21323)
* Set gasLimit in --dev mode to be 9m.

* core: Set gasLimit to 11.5 milion and add 1 wei allocation for BLAKE2b
2020-07-16 15:08:38 +03:00
Martin Holst Swende
295693759e
core/vm: less allocations for various call variants (#21222)
* core/vm/runtime/tests: add more benchmarks

* core/vm: initial work on improving alloc count for calls to precompiles

name                                  old time/op    new time/op    delta
SimpleLoop/identity-precompile-10M-6     117ms ±75%      43ms ± 1%  -63.09%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   79.6ms ± 4%    70.5ms ± 1%  -11.42%  (p=0.008 n=5+5)

name                                  old alloc/op   new alloc/op   delta
SimpleLoop/identity-precompile-10M-6    24.4MB ± 0%     4.9MB ± 0%  -79.94%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   13.2kB ± 0%    13.2kB ± 0%     ~     (p=0.357 n=5+5)

name                                  old allocs/op  new allocs/op  delta
SimpleLoop/identity-precompile-10M-6      382k ± 0%      153k ± 0%  -59.99%  (p=0.000 n=5+4)
SimpleLoop/loop-10M-6                     40.0 ± 0%      40.0 ± 0%     ~     (all equal)

* core/vm: don't allocate big.int for touch

name                                  old time/op    new time/op    delta
SimpleLoop/identity-precompile-10M-6    43.3ms ± 1%    42.4ms ± 7%     ~     (p=0.151 n=5+5)
SimpleLoop/loop-10M-6                   70.5ms ± 1%    76.7ms ± 1%   +8.67%  (p=0.008 n=5+5)

name                                  old alloc/op   new alloc/op   delta
SimpleLoop/identity-precompile-10M-6    4.90MB ± 0%    2.46MB ± 0%  -49.83%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   13.2kB ± 0%    13.2kB ± 1%     ~     (p=0.571 n=5+5)

name                                  old allocs/op  new allocs/op  delta
SimpleLoop/identity-precompile-10M-6      153k ± 0%       76k ± 0%  -49.98%  (p=0.029 n=4+4)
SimpleLoop/loop-10M-6                     40.0 ± 0%      40.0 ± 0%     ~     (all equal)

* core/vm: reduce allocs in staticcall

name                                  old time/op    new time/op    delta
SimpleLoop/identity-precompile-10M-6    42.4ms ± 7%    37.5ms ± 6%  -11.68%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   76.7ms ± 1%    69.1ms ± 1%   -9.82%  (p=0.008 n=5+5)

name                                  old alloc/op   new alloc/op   delta
SimpleLoop/identity-precompile-10M-6    2.46MB ± 0%    0.02MB ± 0%  -99.35%  (p=0.008 n=5+5)
SimpleLoop/loop-10M-6                   13.2kB ± 1%    13.2kB ± 0%     ~     (p=0.143 n=5+5)

name                                  old allocs/op  new allocs/op  delta
SimpleLoop/identity-precompile-10M-6     76.4k ± 0%      0.1k ± 0%     ~     (p=0.079 n=4+5)
SimpleLoop/loop-10M-6                     40.0 ± 0%      40.0 ± 0%     ~     (all equal)

* trie: better use of hasher keccakState

* core/state/statedb: reduce allocations in getDeletedStateObject

* core/vm: reduce allocations in all call derivates

* core/vm: reduce allocations in call variants

- Make returnstack `uint32`
- Use a `sync.Pool` of `stack`s

* core/vm: fix tests

* core/vm: goimports

* core/vm: tracer fix + staticcall gas fix

* core/vm: add back snapshot to staticcall

* core/vm: review concerns + make returnstack pooled + enable returndata in traces

* core/vm: fix some test tracer method signatures

* core/vm: run gencodec, minor comment polish

Co-authored-by: Péter Szilágyi <peterke@gmail.com>
2020-07-16 15:06:19 +03:00
Martin Holst Swende
6c9f040ebe
core: transaction pool optimizations (#21328)
* core: added local tx pool test case

* core, crypto: various allocation savings regarding tx handling

* core/txlist, txpool: save a reheap operation, avoid some bigint allocs

Co-authored-by: Marius van der Wijden <m.vanderwijden@live.de>
2020-07-14 21:42:32 +02:00
gary rong
79addac698
core/rawdb: better log messages for ancient failure (#21327) 2020-07-13 20:43:30 +02:00
gary rong
6eef141aef
les: historical data garbage collection (#19570)
This change introduces garbage collection for the light client. Historical
chain data is deleted periodically. If you want to disable the GC, use
the --light.nopruning flag.
2020-07-13 11:02:54 +02:00
Felix Lange
bcb3087450 Revert "core, txpool: less allocations when handling transactions (#21232)"
Reverting because this change started handling account balances as
uint64 in the transaction pool, which is incorrect.

This reverts commit af5c97aebe.
2020-07-09 14:02:03 +02:00
Felix Lange
6315b6fcc0
rlp: reduce allocations for big.Int and byte array encoding (#21291)
This change further improves the performance of RLP encoding by removing
allocations for big.Int and [...]byte types. I have added a new benchmark
that measures RLP encoding of types.Block to verify that performance is
improved.
2020-07-06 11:17:09 +02:00
Martin Holst Swende
12867d152c
rpc, internal/ethapi: default rpc gascap at 25M + better error message (#21229)
* rpc, internal/ethapi: default rpc gascap at 50M + better error message

* eth,internal: make globalgascap uint64

* core/tests: fix compilation failure

* eth/config: gascap at 25M + minor review concerns
2020-07-01 19:54:21 +02:00