* [rawdb] add error handling to all rawdb write. Add fdlimit module. Fix the node stuck
* [core] switch back the batch write condition in InsertReceiptChain
* [rawdb] add error handling to all rawdb write. Add fdlimit module. Fix the node stuck
* [consensus] refactored and optimized tryCatchup logic
* [sync] added consensus last mile block in sync.
* [consensus] remove time wait for consensus inform sync. Make block low chan a buffered chan
* [consensus] fix rebase errors, and optimize one line code
* [consensus][sync] fix golint error and added prune logic in sync
* [consensus] move header verify after adding FBFT log in onPrepared
* [consensus] more change on block verification logic
* [consensus] fix the verified panic issue
* [consensus][sync] add block verification in consensus last mile, change it to iterator
* [consensus] fix two nil pointer references when running local node (Still cannot find the root cause for it)
* remove coverage.txt and add to gitignore
* [consensus] add leader key check. Move quorum check logic after tryCatchup and can spin state sync
* [consensus] remove the leader sender check for now. Will add later
* [consensus] refactor fbftlog to get rid of unsafe mapset module. Replace with map
* [consensus] move the isQuorumAchived logic back. We surely need to check it before add to FBFTlog
* [consensus] remove the redundant block nil check
* [test] fix the consensus test
* [consensus] rebase main and fix stuff. Removed isSendByLeader
* [consensus] added logic to spin up sync when received message is greater than consensus block number
* [consensus] more changes in consensus. Remove some spin sync logic.
* fix error in main
* [consensus] change the hash algorithm of the FBFTLog to get rid of rlp error
* [consensus] use seperate mutex in FBFT message
* [consensus] change fbft log id to a shorter form. Added unit test case
* [rawdb] add error handling to all rawdb write. Add fdlimit module. Fix the node stuck
* [core] switch back the batch write condition in InsertReceiptChain
* [core] add comments on isUnrecoverableErr
* [consensus] enable the consensus module can spin up doSync
* [consensus] remove the blockNumLowChan buffer in onCommitted. Move tryCatchup logic before informing blockNumLow
* [sync] Remove an unnecessary time ticker in sync to reduce one sync loop time from 3.5s to 1s (based on testnet)
* [consensus] also spin up state sync at onPrepared
* [consensus] removed onCommitted block number check since redundent
* [rosetta] Add server stop
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Make network naming consistent
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Correct common package name & add error enum
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Remove needless forward of network info to services
* Implement /network/list
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Refactor errors & add operation statuses and types
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Implement NetworkOptions & update NetworkAPIService
* Rename *_service.go files to remove the suffix
* Update StartServers to use new operation types
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Impl NetworkStatus - Finish init impl of /network endpoint
* Fix import structure for rosetta.go
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [test] Make explorer run as archival for localnet
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add unit tests
* Force errors to remain the same with unit tests
* Force operations to remain the same with unit tests
* Ensure network checking works for all cases with unit tests
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add InvalidNetworkError and correct error codes
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add UnmarshalFromInterface for SubNetworkMetadata
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add network checking
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Nit fixes & add unit test for Peer Info
* Make names consistent
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add BlockNotFoundError & TransactionNotFoundError
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Implement skeleton for block transactions
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add ReceiptNotFoundError
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add receipt to formatTransaction sig for contract fails
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add currency, ExpendGasOperation, & ContractCreationOperation
* Add Error creator
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Init impl of plain transaction formatting
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Update network.go for new error constructor
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Implement stx formatter & refactor BlockTransaction
* Updated todo comments & function formatting
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Impl Block & make currency non-ptr for easy copy with custom metadata
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix collect rewards amount on transaction fetch
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix block look-up edge case & add recovery middleware
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add bocks unit tests
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix checkPeerID unit test in network_test.go
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix staking tx amount for tx ops & update inline docs
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix lint
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Refactor getStakingOperations
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix undelegate value
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Nit - fix formatting for network.go
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [node] Move genesis allocation to core & remove unused ContractDeployerKey
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix precision error & add cx receipt hash on blk fetch
* Add unit tests for supporting helper functions
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix fmt
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Fix cx receipt hashes for blocks
* Print stack trace on panic recovery
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [node] Nit - fix comment for StopRosetta
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [node] Expose GetMaxPeerHeight
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Add SyncStatus enum
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* [rosetta] Nit - remove redundant 'service' name in services namespace
Signed-off-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
* Fix minor typos
* Properly sort imports
* [explorer] Add /node-sync to return if the node is in sync
* [explorer] Use different status code for node out of sync & JSON error
* [main] Do not initialize syncing as a separate go routine to ensure stateSync pointer is initialized before explorer service creation (adds 0.002 seconds to node start up time)
[sync] Fix nil pointer on syncConfig, return true since node has not yet checked if it is in sync
* [explorer] Reverse sync for display
* fix signers share computation to use only non-harmony nodes (#3008)
* Add LastEpochInCommittee at prestaking epoch too (#3014)
* write validator stats at the end of prestaking epoch (#3021)
* write validator stats at the end of prestaking epoch
* also need to write block reward accumulator
* [build] enable static build by default (#2885)
scripts/go_executable_build.sh -s (static build, default)
scripts/go_executable_build.sh -S (non-static build)
Signed-off-by: Leo Chen <leo@harmony.one>
* Code formatting fix based on `staticcheck` (#3023)
* fix some static check issues
* more fixes according to staticcheck
* add nil check on getHeader
* Add more log info
* [rpc] Revert change to v2 GetBalance RPC (#3037)
* Cherrypick crosslink related fixes from t3 to master. (#3045)
* Optimize crosslink verification logic and add more cache (#3032)
* make crosslink broadcast smarter and more efficient (#3036)
* adjust catch up speed to be a sane number
* Fix crosslink broadcast condition (#3041)
* Tx pool error report fix & local build fix (#3046)
* [tx_list] Add transaction after you can fetch tx cost
* [tx_pool] Add error sink reports for removed tx
* Correct log levels for known transactions
* Remove redundant hash to `enqueue` and `add` signatures
* Update tests for signature changes
* [build] Fix local build for MacOs
* [tx_pool] Correct typo & logging level for known tx
* [config] Create Testnet config
* [node.sh] update testnet network config
* [config] correct testnet config
* [main] Enable beacon sync for explorer nodes (#3059)
* [apr] should not use snapshot from last epoch, use current epoch snapshot (#3051)
* use snapshot total delegation instead of current total delegation
* should not use snapshot from last epoch, use current epoch snapshot (#3049)
Co-authored-by: Rongjian Lan <rongjian.lan@gmail.com>
Co-authored-by: Rongjian Lan <rongjian.lan@gmail.com>
* cherrypick log level change
* [rpc] Add active status back to Validator information
[validator] Fix typo for ValidatorRPCEnhanced
[Makefile] Change make exe to build non-static by default
* [network] Added caching to node server (#3048)
* [network] Added caching to node server
* [network] renamed two singleflight.Group
* [network] added two error handling
* [network] added forget logic for single flight
* [network] changed single flight to lru cache solution
* [network] adjusted the cache size
* [network] changed cache size to 10000
* Transaction api improvements (#3057)
* [node] Add option to broadcast invalid tx (on by default)
* update main args to take in broadcast invalid tx
* update node.sh for new broadcast invalid tx option
* [rpc] Do not submit transaction if tx has been finalized
* Support legacy behavior and not return errors on tx submission
* [main] make broadcasting invalid tx default false
* [node] Fix formatting
* Add timeouts for the explorer HTTP service
* [test] State trans unit test (#3043)
* completing create-validator tests
generalizing create validator tests, started with edit validator tests
one round completed before major refactor
* [test] finished coding test TestCheckDuplicateFields
* [test] finished debug TestCheckDuplicateFields
* [test] Added TestDescription_EnsureLength
* [test] added test in validator_test.go TestUpdateDescription
* [test] Added test TestComputed_String
* [test] refactored TestValidatorSanityCheck and added some message in error message returned from sanity check
* [test] removed test index for debugging
* [test] Added test TestValidatorWrapper_SanityCheck. Added value check for TestMarshalUnmarshalValidator. Fixed rlp usage defect in UnmarshalValidator
* [test] added test TestVerifyBLSKeys
* [test] added test TestContainsHarmonyBLSKeys
* [test] added test TestCreateValidatorFromNewMsg
* [test] fixed some tests errors
* [test] added test TestUpdateValidatorFromEditMsg, last editted the test file, finished testing validator_test.go
* [staking] added numeric.Dec.Copy method
* [staking] added CommissionRates.Copy
* [staking] add nil case handle to copy method and related test case
* [test] added nil case for commissionRates.Copy test
* [staking] finished CreateValidator.Copy and related test case
* [staking] added EditValidator.Copy method and related test case
* [test] added zero test cases for Copy method
* [staking] implemented Delegate.Copy and related unit test case
* [staking] added Undelegate.Copy and CollectReward.Copy method. Implemented corresponding test cases
* [test] added two more simple unit tests
* [test] solving the merge conflict with deep copy fix
* [test] added schedule for sharding
* [test] refactored double_sign_test.go
* [test] comment out all test cases for now.
* [test] added record Copy method for testing
* [test] added the first test case in TestVerify
* [test] finished test TestVerify
* [test] Added test TestVerify, TestApplySlashRate, TestSetDifference
* [test] half through TestDelegatorSlashApply
* [test] fix the problem cause by unsafe usage of big.Int
* [staking] added the copy methods to validatorWrapper
* [test] added test cases for copy method for staking/validatorWrapper
* [test] added test case TestApply
* [test] added test case TestRate
* [test] fix the golint errors
* [test] removed commented out unit test code
* [test] remote the empty line in imports
* [test] moved copy methods to stake_testing module
* [test] removed usage of interface stateDB
* [test] removed empty lines in imports
* [test] fixed golint package name issues
* [test] removed a todo when writing code
* [test] moved record.Copy to staking/slash/test
* [test] add some changes
* [test] added prototypes in staketest module
* [test] fix the golint issue in staketest
* [test] make prototype more beautiful
* [test] refactored test TestCheckDuplicateFields
* [test] add createValidator test data
* [test] added positive test case for VerifyAndCreateValidatorFromMsg
* [test] added create validator test
* [test] added the positive test case for TestVerifyAndEditValidatorFromMsg
* [test] added the tests case TestVerifyAndEditValidatorFromMsg
* [test] fix one of the error is not triggered as expected
* [test] more changes in test
* [test] fix the positive test data for TestVerifyAndDelegateFromMsg
* [test] Fixed two comment golint errors
* [test] added delegate tests
* [test] added a make function. WIP
* [test] added undelegate positive test
* [test] added negative test cases for undelegate
* [test] added positive test. not passed. Need to add assert method in test suites
* [test] added equal function to check Validator Equality
* [test] added equals for staketest
* [test] replaced deep equal with new equal methods:
* [test] removed unused codes
* [test] Finishing touch
* [test] fix comment golint issue
* [test] removed dead code in staking_verifier_test.go
Co-authored-by: Ganesha Upadhyaya <ganeshrvce@gmail.com>
* changed the sync port to dns port in flag
* [network] Limit client sync connection (#3071)
* [network] limit client connected peers
* Changed signature and added tests
* Set secure permissions on generated blskey pass file in node.sh
* Fix spellin gtypo in node.sh
* fix latest param handling in api v1
* added comment for the isGreaterThanLatestBlockNum check
* fix a nil pointer crash due to previous revert
Signed-off-by: Leo Chen <leo@harmony.one>
* fix nil pointer crash
Signed-off-by: Leo Chen <leo@harmony.one>
* fix nil pointer of block
Signed-off-by: Leo Chen <leo@harmony.one>
* [rpc] add viewID and epoch to RPCMarshalBlock (#3009)
* [rpc] add viewID and epoch to RPCMarshalBlock
* add apt-get update
* Do not rollback current block on failed block sync (#3101)
Co-authored-by: Ganesha Upadhyaya <ganeshrvce@gmail.com>
Co-authored-by: Rongjian Lan <rongjian.lan@gmail.com>
Co-authored-by: Jacky Wang <jackyw.se@gmail.com>
Co-authored-by: Janet Liang <56005637+janet-harmony@users.noreply.github.com>
Co-authored-by: Daniel Van Der Maden <dvandermaden0@berkeley.edu>
Co-authored-by: Janet Liang <janet@harmony.one>
Co-authored-by: Sebastian Johnsson <sebastian.johnsson@gmail.com>
Co-authored-by: hsiung <hsiung@pinterest.com>
Co-authored-by: Dennis Won <jhwon0820@gmail.com>
Co-authored-by: Yishuang Chen <34232522+ivorytowerdds@users.noreply.github.com>
* [project] Dead test
* [node] If fields always same, then just use the constant
* [project] Remove overcomplicated ctxerror
* [project] Remove more dead tests, adjust error replacing ctxerror
* [project] More dead tests, fix travis complaint on Errorf
* [node.sh] Remove is-genesis
* Clean up logs
* remove log
* Refactor block period logic; wait for 100% sig before timeout
* logic fixes
* optimize now init
* always wait for 2s for grace period
* [double-sign] Commit changes in consensus needed for double-sign
* [double-sign] Leader captures when valdator double signs, broadcasts to beaconchain
* [slash] Add quick iteration tool for testing double-signing
* [slash] Add webhook example
* [slash] Add http server for hook to trigger double sign behavior
* [double-sign] Use bin/trigger-double-sign to cause a double-sign
* [double-sign] Full feedback loop working
* [slash] Thread through the slash records in the block proposal step
* [slash] Compute the slashing rate
* [double-sign] Generalize yaml malicious for many keys
* [double-sign][slash] Modify data structures, verify via webhook handler
* [slash][double-sign] Find one address of bls public key signer, seemingly settle on data structures
* [slash] Apply to state slashing for double signing
* [slash][double-sign] Checkpoint for working code that slashes on beaconchain
* [slash] Keep track of the total slash and total reporters reward
* [slash] Dump account state before and after the slash
* [slash] Satisfy Travis
* [slash][state] Apply slash to the snapshot at beginning of epoch, now need to capture also the new delegates
* [slash] Capture the unique new delegations since snapshot as well
* [slash] Filter undelegation by epoch of double sign
* [slash] Add TODO of correctness needed in slash needs on off-chain data
* [rpc] Fix closure issue on shardID
* [slash] Add delegator to double-sign testing script
* [slash] Expand crt-validator.sh with commenting printfs and make delegation
* [slash] Finish track payment of leftover slash debt after undelegation runs out
* [slash] Now be explicit about error wrt delegatorSlashApply
* [slash] Capture specific sanity check on slash paidoff
* [slash] Track slash from undelegation piecemeal
* [slash][delegation] Named slice types, .String()
* [slash] Do no RLP encode twice, once is enough
* [slash] Remove special case of validators own delegation
* [slash] Refactor approach to slash state application
* [slash] Begin expanding out Verify
* [slash] Slash on snapshot delegations, not current
* [slash] Fix Epoch Cmp
* [slash] Third iteration on slash logic
* [slash] Use full slash amount
* [slash] More log, whitespace
* [slash] Remove Println, add log
* [slash] Remove debug Println
* [slash] Add record in unit test
* [slash] Build Validator snapshot, current. Fill out slash record
* [slash] Need to get RLP dump of a header to use in test
* [slash] Factor out double sign test constants
* [slash] Factor out common for validator, stub out slash application, finish out deserialization setup
* [slash] Factor out data structure creation because of var lexical scoping
* [slash] Seem to have pipeline of unit test e2e executing
* [slash] Add expected snitch, slash amounts
* [slash] Checkpoint
* [slash] Unit test correctly checks case of validator own stake which could drop below 1 ONE in slashing
* [config] add double-sign testnet config (#1)
Signed-off-by: Leo Chen <leo@harmony.one>
* [slash] Commit for as is code & data of current dump.json
* [slash] Order of state operation not correct in test, hence bad results, thank you dlv
* [slash] Add snapshot state dump
* [slash] Pay off slash of validator own delegation correctly
* [slash] Pay off slash debt with special case for min-self
* [slash] Pass first scenario conclusively
* [slash] 2% slash passes unit test for own delegation and external
* [slash] Parameterize unit test to easily test .02 vs .80 slash
* [slash] Handle own delegation correctly at 80% slash
* [slash] Have 80% slash working with external delegator
* [slash] Remove debug code from slash
* [slash] Adjust Apply signature, test again for 2% slash
* [slash] Factor out scenario in testing so can test 2% and 80% at same time
* [slash] Correct balance deduction on plan delegation
* [slash] Mock out ChainReader for TestVerify
* [slash] Small surface area interface, now feedback loop for verify
* [slash] Remove development json
* [slash] trigger-double-sign consumes yaml
* [slash] Remove dead code
* [slash][test] Factor ValidatorWrapper into scenario
* [slash][test] Add example from local-testing dump - caution might be off
* [slash] Factor out mutation of slashDebt
* [slash][test] Factor out tests so can easily load test-case from bytes
* [slash] Fix payment mistake in validator own delegation wrt min-self-delgation respected
* [slash] Satisfy Travis
* [slash] Begin cleanup of PR
* [slash] Apply slash from header to Finalize via state processor
* [slash] Productionize code, Println => logs; adjust slash picked in newblock
* [slash] Need pointer for rlp.Decode
* [slash] ValidatorInformation use full wrapper
* Fix median stake
* [staking] Adjust MarshalJSON for Validator, Wrapper
* Refactor offchain data commit; Make block onchain/offchain commit atomic (#2279)
* Refactor offchain data; Add epoch to ValidatorSnapshot
* Make block onchain/offchain data commit atomically
* [slash][committee] Set .Active to false on double sign, do not consider banned or inactive for committee assignment
* [effective] VC eligible.go
* [consensus] Redundant field in printf
* [docker] import-ks for a dev account
* [slash] Create BLS key for dockerfile and crt-validator.sh
* [slash][docker] Easy deployment of double-sign testing
* [docker] Have slash work as single docker command
* [rpc] Fix median-stake RPC
* [slash] Update webhook with default docker BLS key
* [docker][slash] Fresh yaml copy for docker build, remove dev code in main.go
* [slash] Remove helper binary, commented out code, change to local config
* [params] Factor out test genesis value
* Add shard checking to Tx-Pool & correct blacklist (#2301)
* [core] Fix blacklist & add shardID check
* [staking + node + cmd] Fix blacklist & add shardID check
* [slash] Adjust to PR comments part 1
* [docker] Use different throw away funded account
* [docker] Create easier testing for delegation with private keys
* [docker] Update yaml
* [slash] Remove special case for slashing validator own delegation wrt min-self-delegate
* [docker] Install nano as well
* [slash] Early error if banned
* [quorum] Expose earning account in decider marshal json
* Revert "Refactor offchain data commit; Make block onchain/offchain commit atomic (#2279)"
This reverts commit 9ffbf682c0.
* [slash] Add non-sanity check way to update validator
* [reward] Increase percision on percentage in schedule
* [slash] Adjust logs
* [committee] Check eligibility of validator before doing sanity check
* [slash] Update docker
* [slash] Move create validator script to test
* [slash] More log
* [param] Make things faster
* [slash][off-chain] Clear out slashes from pending in writeblockwithstate
* [cross-link] Log is not error, just info
* [blockchain] Not necessary to guard DeletePendingSlashingCandidates
* [slash][consensus] Use plain []byte for signature b/c bls.Sign has private impl fields, rlp does not encode that
* [slash][test] Use faucet as sender, assume user imported
* [slash] Test setup
* [slash] reserve error for real error in logs
* [slash][availability] Apply availability correct, bump signing count each block
* [slash][staking] Consider banned field in sanity check, pay snitch only half of what was actually slashed
* [slash] Pay as much as can
* [slash] use right nowAmt
* [slash] Take away from rewards as well
* [slash] iterate faster
* [slash] Remove dev based timing
* [slash] Add more log, sanity check incoming slash records, only count external for slash rate
* [availability][state] Adjust signature of ValidatorWrapper wrt state, filter out for staked validators, correct availaibility measure on running counters
* [availability] More log
* [slash] Simply pre slash erra slashing
* [slash] Remove development code
* [slash] Use height from recvMsg, todo on epoch
* [staking] Not necessary to touch LastEpochInCommittee in staking_verifier
* [slash] Undo ds in endpoint pattern config
* [slash] Add TODO and log when delegation becomes 0 b/c slash debt payment
* [slash] Abstract staked validators from shard.State into type, set slash rate based BLSKey count
Co-authored-by: Leo Chen <leo@harmony.one>
Co-authored-by: flicker-harmony <52401354+flicker-harmony@users.noreply.github.com>
Co-authored-by: Rongjian Lan <rongjian@harmony.one>
Co-authored-by: Daniel Van Der Maden <daniel@harmony.one>
* add retries to process state sync where failed peer config is excluded on the next try
* Updated per @fxfactorial 's review comments.
* use anonymous function as a callback for iteration
Jacky Wang
Rongjian Lan
Daniel Van Der Maden
Janet Liang
Leo Chen
Edgar Aroutiounian
flicker-harmony
Jong Hyuck Won