Commit Graph

200 Commits

Author SHA1 Message Date
Jacek Sieka bcf90860b6
test fix 2020-06-01 18:01:46 +02:00
Jacek Sieka 405f460f9b
int64 fixes 2020-06-01 17:35:42 +02:00
Jacek Sieka f1dcee2749
wip: cache
* cache lists and arrays of complex objects (5x block processing speed
on ncli_db)

trivial baseline cache that stores tree in flat memory structure
2020-06-01 14:52:50 +02:00
Zahary Karadjov 0bcdabfcdf Detect another invalid SSZ input found through fuzzing
The first offset of an SSZ object should always have a fixed constant
value. Otherwise, some unused bytes may appear between the fixed portion
and the dynamic portion.

Please note that this fix shutds down the minimal forward compatibility
currently supported by the SSZ format (and thus, the expected behavior
must be clarified in the SSZ spec).
2020-05-30 14:47:35 +03:00
Zahary Karadjov 1fd87a2255 Remove SszReader.maxObjectSize 2020-05-28 19:15:16 +03:00
Jacek Sieka 693bc15919 avoid some RVO bugs 2020-05-28 19:15:16 +03:00
Jacek Sieka f53b55cbe0 SSZ cleanup
* be stricter about SSZ length prefix
* compute zeroHash list at compile time
* remove SSZ schema stuff
* move SSZ navigation to ncli
* cleanup a few leftover openArray uses
2020-05-28 19:15:16 +03:00
Jacek Sieka 18eca263b1
avoid stack allocations in some tests (#1079) 2020-05-28 10:28:14 +02:00
Zahary Karadjov a8003e7e38 More complete integration of the List type; Detect more invalid inputs; Enable more tests 2020-05-24 19:00:34 +03:00
tersec 80b8416305
skip skipped constant sanity checks also from markdown reports' perspectives (#1053)
* update more spec refs in beacon_chain/spec/presets; skip skipped constant sanity checks also from markdown reports' perspectives

* mark skipped as skipped in markdown
2020-05-21 19:56:09 +02:00
Jacek Sieka a38eddcaac
remove ssz stint support (#1046) 2020-05-20 19:05:22 +02:00
Dustin Brody f4d38611ef check that process_slots() succeeds 2020-05-19 17:16:55 +00:00
Dustin Brody 6c941b1ff7 spec v0.11.3 update 2020-05-19 17:16:55 +00:00
tersec 8432932c11
update to spec v0.11.2 to keep compatible with Schlesi (#1036)
* update to spec v0.11.2 to keep compatible with Schlesi

* update spec/state_transition_epoch spec references to v0.11.2

* bump other spec refs
2020-05-18 23:05:27 +00:00
Zahary Karadjov 7e846a0bce Implement sszSize 2020-05-13 12:18:42 +03:00
Zahary Karadjov a739d7e8d6 Adapt SSZ to the latest FastStreams API 2020-05-13 12:18:42 +03:00
tersec c548b90a0e
default preset update; rm process_slots(BeaconState); some BLS skipping disabled (#963)
* re-enable BLS validation for block sanity tests

* update default preset to mainnet; remove process_slots(state: var BeaconState)

* bump spec ref to v0.11.1

* bump all v0.11.1 spec references except the actually changed is_valid_indexed_attestation(...) in spec/beaconstate to v0.11.2

* remove stack-risky/low-ROI doAssert
2020-05-04 21:07:18 +00:00
tersec cf8e90615a
More state_transition unification (#953)
* remove incorrect/obsolete comment; deprecate BeaconState state transition functions

* remove deprecated state_transition(state: var BeaconState)

* add specific workarounds for state_transition() and process_slots() to nfuzz_block() and addTestBlock()
2020-04-30 18:27:17 +02:00
Jacek Sieka c74ba5c0c6
ssz: move ref support outside (#943)
* ssz: move ref support outside

Instead of allocating ref's inside SSZ, move it to separate helper:

* makes `ref` allocations explicit
* less magic inside SSZ
* `ref` in nim generally means reference whereas SSZ was loading as
value - if a type indeed used references it would get copies instead of
references to a single value on roundtrip which is unexpected

TODO: EF tests would benefit from some refactoring since they all do the
same thing practically..

Co-authored-by: Zahary Karadjov <zahary@gmail.com>
2020-04-29 22:12:07 +02:00
Jacek Sieka 03a147ab8d
avoid state copy in state transition (#930)
In BlockPool, we keep the head state around, so it's trivial to restore
the temporary state there and keep going as if nothing happened.

This solves 3 problems:
* stack space - the state copy on mainnet is huge
* GC scanning - using stack space for state slows down the GC
significantly
* reckless copying - the copy itself takes a long time

In state_sim, we'll do the same and allocate on heap - this helps a
little with GC - without it, the collection of the temporary strings
created with `toHex` while printing the json dominates the trace.
2020-04-26 21:13:33 +02:00
Zahary Karadjov 4e9fa51ae9 Introduce BeaconNodeRef and use it in all the right places 2020-04-26 13:04:53 +03:00
Zahary Karadjov fdcbfdff05 Pass the test suite with a BeaconState ref type 2020-04-26 13:04:53 +03:00
tersec 8a72ae89b9
fix mainnet finalization (#906)
* fix mainnet finalization and swith eth2_network_simulation to a kind of small-mainnet profile

* Fix slot reference in trace logging

* bump a couple of spec refs from v0.11.0 to v0.11.1

* bump another spec ref to v0.11.1, one more try at Jenkins test vector download CI issue

* fix other slot reference in trace logging and skip past single-block/multi-slot gaps to re-approach from ancestry side by state_transitioning, by requiring exact match on both root hash and slot for fast path

* make more precise the fast path condition

* redo logic to make uniform with BeaconChainDB; fix chronos deprecation warning

* revert not-working replacement of deprecated chronos futures `or`

* switch testnet1 to mainnet
2020-04-20 19:27:52 +02:00
tersec 480c11f8aa
fix remaining block sanity test vectors (#902)
* fix remaining block sanity test vectors

* bump epoch processing spec refs to v0.11.1
2020-04-18 00:09:34 +02:00
Dustin Brody 164d171bd9
revert previous commit 2020-04-17 20:27:42 +02:00
Dustin Brody ef92529feb
fix remaining block sanity test vectors 2020-04-17 20:25:18 +02:00
Dustin Brody 3df9a22ff7 fix remaining attester slashing tests from EF phase0 spec tests by checking for uniqueness 2020-04-17 16:01:32 +00:00
Zahary Karadjov ca49494356 Fix test_fixture_ssz_generic_types 2020-04-16 01:01:18 +03:00
Dustin Brody f49dbf68e6 refactor some Merkle proof generation code outside tests; remove unused variables/functions 2020-04-15 09:59:49 +00:00
tersec 8ebd0e166e
Enable 3 official EF spec tests (#883)
* enable success_already_exited_recent, success_already_exited_long_ago, and valid_sig_but_forked_state EF spec tests
2020-04-11 14:02:06 +00:00
tersec 31bf8fa408
remove all but one UnusedImport warning (#881)
* remove all but one UnusedImport warning

* bump a few more spec version references from v0.10.1 to v0.11.1

* more v0.10.1 spec reference updates/removals

* yet more v0.10.1 spec reference updates
2020-04-10 16:06:24 +02:00
Ștefan Talpalaru b7e6afa783
Merge branch 'devel' into nim-1.2 2020-04-08 18:54:41 +02:00
Dustin Brody e7de8aae20 fix/restore 0.11.1 BeaconState genesis interop: (a) use GENESIS_FORK_VERSION properly in BeaconState init; (b) use GENESIS_FORK_VERSION to be compatible with zcli/zrnt initial eth1 deposits; (c) let List[foo] work with 64-bit ints, so BeaconState.validators SSZ-serializes properly; and (d) update test_interop to use new spec/crypto API 2020-04-07 13:16:55 +03:00
Zahary Karadjov d3e225c461
Fix a stack overflow crash with the mainnet preset 2020-04-03 22:04:05 +03:00
tersec daabb1b5b2
complete all (non-semantic, comment-only) 0.11.0 -> 0.11.1 beacon chain spec updates, mark all beacon chain v0.11.0 spec references as v0.11.1, and remove now unnecessary/unused UpdateFlags vars from 4 test fixtures (#841) 2020-03-30 23:40:24 +00:00
tersec f5f939bd31
0.11.1 beacon chain spec update (#836)
* initial 0.11.1 spec commit; no test regressions and finalizes in eth2_network_simulation

* with BLS 0.10/0.11 available, stop skipping attester slashing, proposer slashing, and voluntary exist operations fixture tests

* switch param orders to group state.{fork, genesis_validators_root}; bump spec/datatypes spec version for network purposes

* mark attestation construction and broadcast and some minimal/mainnet constants as 0.11.1-compatible; remove phase 1 sharding constants from minimal which don't exist in that preset
2020-03-30 11:31:44 +00:00
Dustin Brody 313109c743 align process_block(...) name with spec; fix beacon chain proposer index generation when some validators aren't active to fix the two regressing 0.11.0 block sanity tests 2020-03-17 12:06:56 +02:00
Dustin Brody 75003c22e1 drop 0.10.1 EF test vectors 2020-03-17 12:06:56 +02:00
Dustin Brody 6068dd960b initial 0.11.0 spec version update 2020-03-17 12:06:56 +02:00
Zed 6ba7b4b117 Generate markdown test reports 2020-03-13 14:38:59 +00:00
Mamy André-Ratsimbazafy c1c7435808 Skip tests:
- EF - attester slashings - 2 tests
- EF - sanity blocks - 1 test
- NBC - attestation - 1 test
2020-03-13 12:20:41 +00:00
Dustin Brody 0d3de00714 remove unused imports 2020-03-11 10:50:55 +00:00
Jacek Sieka 9a3db7a81f
[WIP] Fake bls at runtime (#735)
* Initial implementation of runtime bls skipping.

Add libnfuzz skipBLSValidation handling, check that it propagates.

* Rename skipBLSValidation -> skipBlsValidation, start skipStateRootValidation
* Replace skipValidation flags with more granular flags.

Also added skipBlockParentRootValidation flag
Mainly replaced with skipBlsValidation but also StateRoot or
BlockParentRootValidation flags where appropriate.

* Adjust interop test to pass when skipping merkle validation.
* Stop skipping validation for mainchain_monitor.
* Remove comment.
* Also skipMerkleValidation for test_beacon_chain_db.
2020-03-05 13:52:10 +01:00
Joao Gabriel Carvalho 91f87b55b4
SignedBeaconBlock in state_transition (#773)
* using SignedBeaconBlock in state_transition
2020-02-29 16:15:44 +01:00
Mamy André-Ratsimbazafy 37446302b2 Use the new nim-eth2-scenarios path for the test vectors 2020-02-17 15:26:11 +00:00
Mamy André-Ratsimbazafy 59bfc1c7b5 Rebrand "fixtures" -> scenario + move to "vendor" 2020-02-17 15:26:11 +00:00
Dustin Brody 04f63da2cc print messages for skipped tests 2020-02-11 15:38:41 +00:00
Dustin Brody ebc8630d5a finish conversion of manual iteration to automatic iteration over EF test vectors per section 2020-02-11 15:38:41 +00:00
tersec 09d735212d
initial refactoring of block sanity test runner, with several new tests (#736)
* initial refactoring of block sanity test runner, with several new tests enabled

* remove trailing whitespace
2020-02-07 08:11:26 +01:00
tersec 989559cd2d
set block header tests to automatically enumerate all relevant tests (#717)
* set block header tests to automatically enumerate all relevant tests

* add several attester slashing tests and run all tests by default, rather than only explicitly listed test vectors

* print something relating to skipped tests

* set voluntary exits to automatically enumerate all tests
2020-02-06 12:41:06 +01:00
Dustin Brody ba9c90c0a1 switch attestations, proposer slashings, and slots sanity tests to automatically iterate across all available test vectors rather than hard-coding them 2020-02-04 21:54:42 +00:00
Dustin Brody 1ffc2df23d add a couple new deposit tests; fix the false-positive BLS verifications while keeping all but two tests working, despite mismatched 0.9/0.10 BLS standards; better-factor the skipping of BLS validation and Merkle tree validation 2020-02-04 18:39:38 +00:00
Dustin Brody 2591be8796 re-organize/shuffle proposer_slashing operations test runner for easy consistency-with-alphabetical-GitHub checking 2020-01-30 12:42:21 +00:00
Dustin Brody 9748b2606e update attestations and voluntary exit operations test to 0.10.1 2020-01-30 11:19:48 +00:00
Zahary Karadjov 1f1a244f3f Implement more checks and wire up the invalid SSZ tests 2020-01-29 10:10:28 +02:00
Dustin Brody dab107fa1e more 0.10.1 updates 2020-01-27 12:50:54 +00:00
Mamy Ratsimbazafy 1ba2cebd85 v0.10.1 (test vectors + unchanged parts) (#696)
* update to 0.10.1

* SSZ Generic and nbench uses the v0.10.1 fixtures

* Tests + spec links: v0.10.0 -> v0.10.1

* Add v0.10.1 TODO in get_latest_attesting_balance (forkchoice)

* SSZ Bytes are now ByteList

* Remove nim-result submodules that was leftover/added by mistake in the branch
2020-01-27 10:56:32 +00:00
Dustin Brody 8eaebf7163 update to spec version 0.10.0 2020-01-14 18:17:16 +00:00
Dustin Brody 8090a15cc2 fix UnusedImport warning 2020-01-07 18:06:20 +00:00
Dustin Brody 3e7d56a66f update test suite to 0.9.4 vectors 2019-12-20 16:37:36 +00:00
Mamy Ratsimbazafy 106352aff3
Nbench - Flexible benchmarking of Nimbus internals (#641)
* nbench PoC

* Remove the yaml files from the example scenarios

* update README with current status

* Add an alternative implementation that uses defer

* Forgot to add the old proc body

* slots-processing

* allow benching state_transition failures

* Add Attestations processing (workaround confutils bug:
- https://github.com/status-im/nim-confutils/issues/10
- https://github.com/status-im/nim-confutils/issues/11
- https://github.com/status-im/nim-confutils/issues/12

* Add CLI command in the readme

* Filter report and add notes about CPU cycles

* Report averages

* Add debugecho style time/cycle print

* Report when we skip BLS and state root verification

* Update to 0.9.3

* Generalize scenario parsing

* Support all block processing scenarios

* parallel bench runner PoC

* gitBetter load issues reporting (the load issues were invalid signature and expected to fail)
2019-12-20 17:14:43 +01:00
Dustin Brody 27bf8908a9 mark a couple dozen functions and data structures as 0.9.3; fix TRACE-level compiling; stop downloading 0.9.2 test vectors; update cosmetic/display spec versions in test suite 2019-12-17 16:51:46 +00:00
Dustin Brody c824416f56 initial 0.9.3 spec update 2019-12-17 00:06:03 +02:00
Mamy André-Ratsimbazafy eeadafa46b
Test vector 0.9.3 2019-12-13 09:45:12 +01:00
Dustin Brody 570de0839d measure/find slow tests (#624) 2019-12-05 11:27:00 +01:00
Dustin Brody 1494bcc262 replace links to Apache and MIT licenses with HTTPS versions (#592) 2019-11-25 16:30:02 +01:00
Dustin Brody 8d9fdb0afd miscellanous cleanups and removing a few funcs/procs from unnecessary global scopes 2019-11-25 09:08:15 +00:00
Mamy Ratsimbazafy 22adccc917
support List in reportDiff and comment out BLS and shuffling tests (#585)
* support List in report diff

* Json tests were removed but walkDirRec lull-ed us into thinking we were passing them :/
2019-11-24 11:46:45 +01:00
Mamy Ratsimbazafy 1938379bcd
Automated beacon constant checks (#583)
* Fix SSZ bitlist deserialization super silly bug

* Add an automated sanity checks of the beacon chain constants

* Remove SSZ consensus skipping procs [skip ci]

* Add phase 1 domains

* Fix mainnet constants

* Add missing phase 1 constants on minimal (they are not needed somehow on mainnet)

* Rebase artifact: constants were defined twice
2019-11-22 20:56:39 +01:00
Dustin Brody edfd65fd5d stop download 0.9.1 test vectors; finish 0.9.2 update, primarily via fixing preset constants; remove a couple 0.19.6 shims 2019-11-22 16:41:43 +00:00
Dustin Brody f5b8931fad switch assert(...) to doAssert(...) and minor cleanup 2019-11-22 16:39:05 +00:00
Mamy Ratsimbazafy 69e15a48a4
bump v0.9.2 test vectors (#575) 2019-11-22 00:23:41 +01:00
Mamy Ratsimbazafy bb0979f232
Ssz fixes (#566)
* SSZ signature from EF are always opaque blobs (security issue - https://github.com/status-im/nim-beacon-chain/issues/555)
Enable
- Attestation
- Beaconstate (minimal only)
- Deposit
- DepositData
- ProposerSlashing

Updates #518

* mv debug_ssz to helpers

* Small reorg of the list types

* Fix IndexedAttestation, AttesterSlashing and BeaconBlock

* Deactivate on mainnet: AttesterSlashing, BeaconBlockBody, IndexedAttestation, Attestation, BeaconBlock

* Fix Validators on minimal and mainnet
2019-11-19 12:04:51 +01:00
Dustin Brody d8590bbffc fix several warnings and hints 2019-11-18 17:35:58 +00:00
Dustin Brody 3f958d3529
Merge branch 'master' into bat 2019-11-14 19:37:47 +00:00
Dustin Brody 7e70d16da9
remove BeaconStateNew and associated testing scaffolding/infrastructure 2019-11-14 20:03:08 +01:00
Dustin Brody b4850fbb06 remove XDeclaredButNotUsed spam 2019-11-14 15:58:31 +00:00
Mamy André-Ratsimbazafy f98dd9b1bf Bump: only keep 0.9.1 tests, remove LFS 2019-11-14 12:48:34 +00:00
Dustin Brody df1d00f13a remove UnusedImport spam (#549)
* remove UnusedImport spam

* re-add random import to beacon_node
2019-11-14 11:47:55 +01:00
Dustin Brody 24ade89e33 don't download 0.9.0 test vectors 2019-11-13 14:30:21 +00:00
Dustin Brody 5a54c823d8 update to 0.9.1: don't try to run removed tests; re-add 1.5 tests (one only in minimal); remove bls_verify_multiple(...) and AttestationDataAndCustodyBit; and update process_attester_slashing(...), get_indexed_attestation(...), and is_valid_indexed_attestation(...) 2019-11-13 13:49:38 +00:00
Mamy André-Ratsimbazafy a44925cd24 Enable testing of a third of the SSZ consensus objects (minimal and mainnet) 2019-11-12 15:57:27 +00:00
Mamy André-Ratsimbazafy f14d4c4796 Remove the old SSZ tests [skip ci] 2019-11-12 15:57:27 +00:00
Dustin Brody 8e259368a3 flip all but 3 test fixtures to 0.9.1 test vectors 2019-11-12 14:49:26 +00:00
Dustin Brody 637054e765 stop downloading 0.8.3 test vectors 2019-11-12 14:49:26 +00:00
Dustin Brody cb4a86756b update get_seed(...) and get_beacon_proposer_index(...) to 0.9.0, implement compute_proposer_index(...), and render 3 more test fixtures working (#532)
* update get_seed(...) and get_beacon_proposer_index(...) to 0.9.0, implement compute_proposer_index(...), and render 3 more test fixtures working

* rm stray Crosslink reference which prevented static SSZ tests from building

* remove references to removed tests in attestations test fixture; add minimal-preset block sanity test, plus all but one of mainnet tests for block sanity to transition fixtures
2019-11-10 01:03:41 +01:00
Mamy André-Ratsimbazafy d92d90eb0f add v0.9.1 fixtures 2019-11-09 10:03:11 +00:00
Dustin Brody 275fb22c00 flip targeted spec version and ssz test fixtures to 0.9.0; almost completely update BeaconState to 0.9.0; update minimal and mainnet preset constants to 0.9.0; update process_proposer_slashing(...), get_attestation_deltas(...), and get_matching_head_attestations(...) to 0.9.0; mark process_final_updates(...) as 0.9.0 2019-11-08 13:23:08 +00:00
Mamy André-Ratsimbazafy 88e6bb04d2 Integrate to the test suite 2019-11-07 17:22:15 +00:00
Mamy André-Ratsimbazafy 4e5137011b Fix some declared but not used 2019-11-07 17:22:15 +00:00
Mamy André-Ratsimbazafy 05362886a9 SSZ Heterogeneous container: deserialize SingleField/Small/Fixed, Skip Var/Complex/Bits 2019-11-07 17:22:15 +00:00
Mamy André-Ratsimbazafy d17f15d020 stash support for Bitlist tests - serialization of distinct types not supported https://github.com/status-im/nim-beacon-chain/issues/518 2019-11-07 17:22:15 +00:00
Mamy André-Ratsimbazafy 1caea64ac9 add BitVector [skip ci] 2019-11-07 17:22:15 +00:00
Mamy André-Ratsimbazafy 3b8fc8fab8 Supports for parsing testing dynamically typed vectors [skip ci] 2019-11-07 17:22:15 +00:00
Mamy André-Ratsimbazafy bfbcf2a34d Skeleton of SSZ 0.9.0 for generic SSZ type (not consensus related no minimal/mainnet difference) [skip ci] 2019-11-07 17:22:15 +00:00
Mamy André-Ratsimbazafy 5087b5af30 remove unneeded imports in SSZ fixtures 2019-11-07 17:22:15 +00:00
Dustin Brody 0073555752
transition deposit operation fixtures to 0.9.0 (#515)
* transition deposit operations fixture to 0.9.0

* mark slash_validator(...) as 0.9.0

* switch remaining non-ref objects to ref objects to maybe avoid crashes in CI

* remove unused helpers/debug_state imports
2019-11-06 15:02:06 +00:00
Dustin Brody 55dac3e36f re-enable some tests on Win64 since Nim 1.0.2 fixes https://github.com/nim-lang/Nim/issues/12186 (#513) 2019-11-01 09:46:50 +01:00
Mamy Ratsimbazafy 753d5af447
Test vectors: use tarballs, allow multiple spec versions for progressive spec updates (#514)
* update test submodule [skip ci]

* rename the process_lfs script to setup_official_tests [skip ci]

* clarify that the existing LFS is for json files [skip ci]

* Update again to use download/unpack function library

* update the test downloading script [skip ci]

* Update EF fixtures with new test path

* fix symlink order

* Fix relative:absolute symlink issue

* add symlink existence check

* setup_official_tests.sh: refactoring
2019-11-01 09:44:16 +01:00
Dustin Brody 63e621c27d
initial 0.9.0 spec sync (#509)
* rename compute_epoch_of_slot(...) to compute_epoch_at_slot(...)

* remove some unnecessary imports; remove some crosslink-related code and tests; complete renaming of compute_epoch_of_slot(...) to compute_epoch_at_slot(...)

* rm more transfer-related code and tests; rm more unnecessary strutils imports

* rm remaining unused imports

* remove useless get_empty_per_epoch_cache(...)/compute_start_slot_of_epoch(...) calls

* rename compute_start_slot_of_epoch(...) to compute_start_slot_at_epoch(...)

* rename ACTIVATION_EXIT_DELAY to MAX_SEED_LOOKAHEAD

* update domain types to 0.9.0

* mark AttesterSlashing, IndexedAttestation, AttestationDataAndCustodyBit, DepositData, BeaconBlockHeader, Fork, integer_squareroot(...), and process_voluntary_exit(...) as 0.9.0

* mark increase_balance(...), decrease_balance(...), get_block_root(...), CheckPoint, Deposit, PendingAttestation, HistoricalBatch, is_active_validator(...), and is_slashable_attestation_data(...) as 0.9.0

* mark compute_activation_exit_epoch(...), bls_verify(...), Validator, get_active_validator_indices(...), get_current_epoch(...), get_total_active_balance(...), and get_previous_epoch(...) as 0.9.0

* mark get_block_root_at_slot(...), ProposerSlashing, get_domain(...), VoluntaryExit, mainnet preset Gwei values, minimal preset max operations, process_block_header(...), and is_slashable_validator(...) as 0.9.0

* mark makeWithdrawalCredentials(...), get_validator_churn_limit(...), get_total_balance(...), is_valid_indexed_attestation(...), bls_aggregate_pubkeys(...), initial genesis value/constants, Attestation, get_randao_mix(...), mainnet preset max operations per block constants, minimal preset Gwei values and time parameters, process_eth1_data(...), get_shuffled_seq(...), compute_committee(...), and process_slots(...) as 0.9.0; partially update get_indexed_attestation(...) to 0.9.0 by removing crosslink refs and associated tests

* mark initiate_validator_exit(...), process_registry_updates(...), BeaconBlock, Eth1Data, compute_domain(...), process_randao(...), process_attester_slashing(...), get_base_reward(...), and process_slot(...) as 0.9.0
2019-10-30 19:41:19 +00:00