Commit Graph

153 Commits

Author SHA1 Message Date
Dario Gabriel Lipicar c2ac108556 chore: rework data structures to accomodate new providers 2023-08-03 12:53:00 -03:00
Stefan eb8d74e1ae feat(wallet) add request id to activity events
Add and use the optional chainID in the wallet event structure.

Updates status-desktop #11380
2023-07-31 18:22:13 +02:00
Dario Gabriel Lipicar 5ba5611a8d feat: implement collectibles service 2023-07-27 12:12:03 -03:00
Dario Gabriel Lipicar b1cf54974e chore: make opensea client return common types 2023-07-27 12:12:03 -03:00
Dario Gabriel Lipicar b5224b3cc5 chore: rename and reorder types 2023-07-27 12:12:03 -03:00
Anthony Laibe e5ce2c7c03 feat: make activity check optional 2023-07-26 09:07:55 +02:00
Sale Djenic 6a5cdbaa8b fix: review comments applied
`GetKeypairs(includeRemoved bool)` removed
`GetActiveKeypairs()` added
`GetAllKeypairs()` added

`GetAccounts(includeRemoved bool)` removed
`GetActiveAccounts()` added
`GetAllAccounts()` added
2023-07-25 18:11:05 +02:00
Sale Djenic d5bba5d80f chore: wallet accounts improvements - soft delete 2023-07-25 18:11:05 +02:00
Dario Gabriel Lipicar 1f379aec1f feat: implemented multi chain collectible ownership provider 2023-07-19 07:58:05 -03:00
Anthony Laibe 0f8347dc59 feat: get chain id for url api 2023-07-18 13:50:13 +02:00
Anthony Laibe 104d9c8ff6
feat: add related chain id to networks (#3697) 2023-07-13 16:03:49 +02:00
Anthony Laibe 23492467b9 feat: clear balance cache after usage 2023-07-12 09:23:56 +02:00
Ivan Belyakov 09dff82db5 feat(wallet): Move pending transactions to `transactions` module.
Handle creation and deletion of pending transactions automatically
on status-go side.
2023-07-11 16:07:42 +02:00
Anthony Laibe dffcb708ea feat: add fourbyte github integration 2023-07-06 11:31:14 +02:00
Stefan c61a4000d8 feat(wallet) make remaining filter apis async
Implement activity.Scheduler to serialize and limit the number of
calls on the activity service. This way we protect form inefficient
parallel queries and easy support async and rate limiting based on the
API requirements.

Refactor the activity APIs async and use the Scheduler for managing
the activity service calls configured with one of the two rules: cancel
ignore.

Updates status-desktop #11170
2023-07-03 16:50:48 +02:00
Stefan ea7a389075 feat(wallet) api to retrieve last activity timestamp
Also fix the lookup source for `GetRecipients` API

Updates status-desktop #11169
2023-06-22 14:06:55 +02:00
Stefan 8e63f44735 feat(wallet) filter activity by erc20
Main changes:

- Refactor activity API to propagate token identities.
- Extend service to convert token identities to symbols for filtering
  multi-transaction
- Filter transfers, pending_transactions and multi-transactions based
  on the provided token identities
- Return involved token identities in activity API
- Test token filtering

Also:

- Fixed calling cancel on a filer activity completed task to release
  resources

Notes:

- Found limitations with the token identity which complicates things
  by not allowing to filter by token groups (like token-code does)

Updates status-desktop #11025
2023-06-20 14:06:49 +02:00
Anthony Laibe 9d5b123c95 feat: add api to parse tx input 2023-06-16 12:10:22 +01:00
Stefan 6f2c338f72 feat(wallet) add filter api to retrieve recipients of a wallet
The new API returns all known recipients of a wallet, by
sourcing transfers, pending_transactions and multi_transactions tables
The API is synchronous. Future work will be to make it async.
In some corner cases, when watching a famous wallet, it can
be that there are too many recipients to be returned in one go. Offset
and limit can be used to paginate through the results.

Updates status-desktop #10025
2023-06-15 20:40:44 -03:00
Dario Gabriel Lipicar ffc959a9e3 chore(wallet): split multitransaction command from full struct
Part of #10791
2023-06-13 07:58:40 -03:00
Stefan d8eb038d7d feat(wallet): make filer API async
Refactor the filter interface to be an async call which returns
the result using a wallet event
A call to the filter API will cancel the ongoing filter and receive
an error result event

Closes status-desktop #10994
2023-06-12 15:42:26 +02:00
Dario Gabriel Lipicar 2fc79fb9b5 feat(Wallet) detect uniswapV2 swap events
Part of #10251
2023-06-05 12:08:18 -03:00
Sale Djenic 03d9af0b95 feat: `AddressExists` endpoint added 2023-05-26 07:12:40 +02:00
Sale Djenic eeaaf0ce3f feat: accounts improvements applied
- old `accounts` table is moved/mapped to `keypairs` and `keypairs_accounts`
- `keycards` table has foreign key which refers to `keypairs.key_uid`
- `Keypair` introduced as a new type
- api endpoints updated according to this change
2023-05-25 19:46:47 +02:00
Stefan e78a73bd9f feat(Wallet) complete the filter API
It uses the current data only and doesn't extend with new types or
include new features in activity sources DBs.

Major changes:
- Partially filter by chain IDs
- Partially filter by Status if it is the case
- Partially filter by token types
- Filter by counterparty addresses
- Use wallet accounts for TO/FROM instead of filters

Closes: #10634
2023-05-23 14:48:29 +02:00
Anthony Laibe 8b05ba6d8b fix: check balance for address details 2023-05-22 09:13:09 +02:00
Andrea Maria Piana 6acb34bab7 Allow setting up wallet with new config
This commit does a few things:

1) Extend create/import account endpoint to get wallet config, some of
   which has been moved to the backend
2) Set up a loop for retrieving balances every 10 minutes, caching the
   balances
3) Return information about which checks are not passing when trying to
   join a token gated community
4) Add tests to the token gated communities
5) Fixes an issue with addresses not matching when checking for
   permissions

The move to the wallet as a background task is not yet complete, I need
to publish a signal, and most likely I will disable it before merging
for now, as it's currently not used by desktop/mobile, but the PR was
  getting to big
2023-05-19 13:23:21 +01:00
Stefan c020222f1b feat(Wallet): add activity filter api prototype
Add the possibility of retrieving the metadata of wallet activity based
on the given filter criteria.

Current implementation relies that after fetching the metadata, user
will follow up with more requests for details. However, after some
experimenting I'm considering extracting all required information
for the summary viewing while filtering. This way there will be no
need for another batch requests for transfers, multi-transactions and
pending transactions to show the summary. Only when user wants to see
the details for one will specifically request it.

For this first prototype, the filter criteria is limited to:
- time
- type
- addresses

Major changes:
- Add the filter definition to be used in propagating the filter
  information
- Add GetActivityEntries API to return the list of activity entries
  for the given addresses/chainIDs by a view in the complete list
- GetTransfersForIdentities to batch retrieve further details of the
  transfers
- GetPendingTransactionsForIdentities to batch retrieve further details
  of the pending transactions
- Added a new package testutils for tests.
- Added tests

Updates status-desktop #10366
Closes status-desktop #10633
2023-05-14 23:05:28 +02:00
IvanBelyakoff cb9f2dd7d2
feat(wallet): refactor transfers to allow multiple transfer fetching (#3432)
strategies.

On mobile devices we might not want to load all transfers history
to avoid high internet traffic consumption or to save some space.
On desktop we will load all transfers in background.

- Moved current fetching transfers implementation to
OnDemandFetchStrategy
- Implemented QueuedAtomicGroup to cache outgoing commands above a
threshold
- Refactored some type names, methods for better clarity:
  - LastKnownBlock name was misused
  - Block renamed to BlockDAO to clarify what it does and avoid
confusion with geth Block type
- Cleanup - removed unused parameters and types' members
- Changed tests to use in memory DB for speedup
- Added more logging and comments

Updates #10246
2023-05-08 08:02:00 +02:00
Dario Gabriel Lipicar c8f0ceccc8 feat: add api to get list of owners from a given nft contract
Fixes #10290
2023-04-19 08:30:10 -03:00
Anthony Laibe ec5449c2bd fix: collectible status event 2023-03-31 19:22:53 +02:00
Anthony Laibe ba75bda39e feat: event on error 2023-03-31 19:22:53 +02:00
Sale Djenic d30c88b80e neat: accounts and wallet api sorted out
Unused endpoints removed, new ones with more meaningful naming are added and
their purposes were revised.
2023-03-28 16:19:27 +02:00
Dario Gabriel Lipicar a1e7eed141 feat: fetch NFT metadata from Communities 2023-03-24 15:17:41 -03:00
Dario Gabriel Lipicar bd82250cf7 feat(Wallet): add API to fetch collectibles by owner and contract address 2023-03-20 10:52:16 -03:00
Dario Gabriel Lipicar bac7eb08ca feat(Wallet): add API to fetch collectibles in a paginated way 2023-03-10 11:27:03 -03:00
Stefan f607164122 feat(wallet) add GetMultiTransactions wallet API
Updates status-desktop #7663
2023-03-07 19:38:31 +04:00
Dario Gabriel Lipicar 3f3e8f8894 feat(Wallet): add opensea asset fetching by contract address and token id 2023-03-07 10:33:50 -03:00
IvanBelyakoff 48078393f9
feat: Update saved addresses DB to store ENS, isTest flag and chains (#3183)
prefixes. Changed primary keys and API methods.
Fixed tests and added new ones.
Fixed saved addresses and transaction tests to use ':memory:' sqlite
DB instead of a tmp file to speed up testing by hundred of times.

Fixes #8599
2023-03-06 16:26:46 +03:00
Stefan 7c7c3a1f13 feat(wallet): keep multi-transactions relation after transaction is complete
Updates status-desktop #7663
2023-03-01 23:34:00 +04:00
Anthony Laibe 60e1978bb5 feat: fallback rpc endpoint 2023-02-28 08:43:57 +01:00
Anthony Laibe e543fda4b5 feat: add coingecko fallback 2023-02-27 09:55:04 +01:00
dlipicar 1d1a95091d
feat: implement currency formatting calculation (#3191) 2023-02-17 11:11:07 -03:00
Stefan f4f6b25302 feat: convert history balance tokens to fiat
Add history.exchange sub-package with following responsibilities

- fetch and caches daily exchange rates for tokens
    - Partial update if missing form yesterday back
- Implement all time fetching special case
- Fetches the price of the token after merging entries for the selected
chains

history.service package changes

- Return ValuePoint instead of DataPoint
    - Value point contains the value in fiat as float64 instead
- Convert merged values from tokens balance (wei) to fiat

Other changes

- Move start/stop balance history to startWallet/stopWallet
- Move cryptocompare to thirdparty package to avoid recursive import
- Rename DataPoint.Value to DataPoint.Balance
- Don't merge entries for single chain
2023-02-15 18:17:21 +04:00
Sale Djenic d44fa42cbf feat: `GetDerivedAddressForPath` endpoint added 2023-02-01 09:03:59 +01:00
Stefan a2ff03c79e feat: retrieve balance history for tokens and cache it to DB
Extends wallet module with the history package with the following
components:

BalanceDB (balance_db.go)

- Keeps track of balance information (token count, block, block timestamp)
for a token identity (chain, address, currency)
- The cached data is stored in `balance_history` table.
- Uniqueness constrained is enforced by the `balance_history_identify_entry`
UNIQUE index.
- Optimal DB fetching is ensured by the `balance_history_filter_entries`
index

Balance (balance.go)

- Provides two stages:
    - Fetch of balance history using RPC calls (Balance.update function)
    - Retrieving of cached balance data from the DB it exists (Balance.get
    function)
- Fetching and retrieving of data is done for specific time intervals
    defined by TimeInterval "enumeration"
- Update process is done for a token identity by the Balance.Update function
- The granularity of data points returned is defined by the constant
increment step define in `timeIntervalToStride` for each time interval.
- The `blocksStride` values have a common divisor to have cache hit
between time intervals.

Service (service.go)

- Main APIs
    - StartBalanceHistory: Regularly updates balance history for all
    enabled networks, available accounts and provided tokens.
    - GetBalanceHistory: retrieves cached token count for a token identity
    (chain, address, currency) for multiple chains
    - UpdateVisibleTokens: will set the list of tokens to have historical
    balance fetched. This is a simplification to limit tokens to a small
    list that make sense

Fetch balance history for ECR20 tokens

- Add token.Manager.GetTokenBalanceAt to fetch balance of a specific
block number of ECR20.
- Add tokenChainClientSource concrete implementation of DataSource
to fetch balance of ECR20 tokens.
- Chose the correct DataSource implementation based on the token
"is native" property.

Tests

Tests are implemented using a mock of `DataSource` interface used
to intercept the RPC calls.

Notes:

- the timestamp used for retrieving block balance is constant

Closes status-desktop: #8175, #8226, #8862
2023-01-25 22:25:50 +04:00
Anthony Laibe e8cd779e35 feat: api to return service up or down 2023-01-21 13:11:03 +01:00
dlipicar c2a8dd8a0c
feat(wallet): add price cache (#3107) 2023-01-19 11:49:48 -03:00
dlipicar 77a56e2b93
Feature/8640 unified currency rounding (#3079)
* feat(@desktop/wallet): added iso4217 library for fiat currency display decimals

* feat(@desktop/wallet): added token peg info and use numbers for token market values

* feat(@desktop/wallet): added
2023-01-12 14:54:14 -03:00
dlipicar 7d04be3613
Revert "feat/currency rounding (#3041)" (#3046)
This reverts commit 3d22f4a86d.
2023-01-04 09:40:26 -03:00
dlipicar 3d22f4a86d
feat/currency rounding (#3041)
* feat(@desktop/wallet): added iso4217 library for fiat currency display decimals

* feat(@desktop/wallet): added token peg info and use numbers for token market values

* feat(@desktop/wallet): extend wallet api to fetch prices in multiple currencies

* chore(@desktop/wallet): rename token peg field for clarity
2023-01-03 10:24:55 -03:00
Anthony Laibe 6abbe98cd2 feat: allow to lock amount in router 2022-12-21 16:58:33 +01:00
Anthony Laibe d7bf19fdbb feat: allow to get wallet token for specific addresses 2022-12-08 09:16:17 +01:00
Anthony Laibe c735e2a6bb feat: add wallet ticker 2022-12-02 10:53:21 +01:00
Anthony Laibe eff02a79a9 feat: add wallet token endpoint 2022-12-02 09:32:07 +01:00
Stefan 601484af3e feat: Retrieve balance history for native token
Add functionality to sample and retrieve balance history and cache
it in memory for the current transfer controller.

The end of the balance history is snapped at twice per day to
avoid having to query the blockchain again for each fetching within
12 hours interval

The functionality will be extended with DB caching, API call batching,
"smarter" cache hitting and syncing between devices

Updates: #7662
2022-11-07 22:39:21 +01:00
Sale Djenic b0b23076a0 feat: `GetDerivedAddressDetails` added to accounts api 2022-10-28 13:27:55 +02:00
Anthony Laibe b11643e66d feat: hop integration 2022-10-26 09:39:30 +02:00
Khushboo-dev-cpp 3364c159f4
feat: Added API for getting historical data for a token (#2882) 2022-10-10 21:02:04 +02:00
Stefan b9d6e6d8c8 feat: sync saved addresses
Main changes:
- Extend saved addresses DB with sync info: sync timestamp, update timestamp
and soft removed flag
- Create custom protobuf message payload to sync saved addresses
- Cleanup saved addresses on each start of messenger, by deleting
soft removed older entries
- Sync all saved addresses on Messenger.SyncDevices calls
- Sync particular changes to saved addresses
- Add SavedAddressManager instance to messenger
  - Note, can't find a clean way to pass the SavedAddressManager to the
  messenger, so we create another one
- Add tests for sync and new DB API

Closes: #7229
2022-10-10 11:26:35 +02:00
Stefan aa4d95917c feat: merge favourites with saved address
Remove Favourites APIs and update the saved address APIs

Added up migration scripts that move the favourites from the old table
to the saved_addresses table with true flag and then drop the favourites table.

Required by #6546
2022-09-12 13:46:04 +02:00
Khushboo-dev-cpp 25a80cf20b
feat(CryptoCompareApi): Get token details from crypto compare (#2793) 2022-08-23 10:46:15 +02:00
Anthony Laibe ce0caa0f7f
feat: multi transaction (#2751) 2022-07-15 10:53:56 +02:00
Khushboo-dev-cpp b2ce92fd41
feat: Add logic to re caculate route for sending a transaction based on networks disabled by the user (#2742) 2022-07-14 16:22:42 +02:00
Anthony Laibe 35c4001e57
feat: estimate time for a transaction (#2744) 2022-07-12 14:25:32 +02:00
Vitaliy Vlasov 3dee94e505 Wallet sync for generated accounts 2022-07-06 19:24:43 +03:00
Anthony Laibe 4a3c4ad0ca
feat: allows to pass array of chain ids (#2733) 2022-07-04 09:48:30 +02:00
Anthony Laibe 8c0f230644
feat: Simple transaction router (#2686) 2022-06-09 15:09:56 +02:00
Khushboo-dev-cpp 15e5584ed2
feat: Add hasActivity param to derived addresses (#2663)
Added functionality to find target address when 6th param in path is added
for ex: "m'/44'/60'/0'/0/500" reperents the Address at the 500th index

Added a api to get the Address derived from a private key
2022-05-18 13:31:45 +02:00
Anthony Laibe e199ddbe9d
feat: get wallet api (#2619) 2022-05-10 09:48:05 +02:00
Anthony Laibe 907ba8ee5c
feat: visible token api (#2624) 2022-04-13 09:55:38 +02:00
Anthony Laibe 4d39547b81
Feat/expose registrar address (#2600)
* feat: expose registrar address

* fix code gen
2022-04-04 12:54:44 -04:00
Anthony Laibe 16311512cb
feat: add suggested fees api (#2604) 2022-03-29 17:12:05 -04:00
Anthony Laibe b629d6fa74
feat: move fetch prices to status-go (#2595) 2022-03-23 09:35:58 +01:00
Anthony Laibe 66d511e33f
feat: add opensea api key (#2528) 2022-02-16 10:22:19 +01:00
Anthony Laibe 9d8ec4432e
feat: Add token store API (#2482) 2022-01-14 10:21:00 +01:00
Richard Ramos ee41e30881
feat: extract node config from settings to individual tables (#2470) 2022-01-12 16:04:43 -04:00
Roman Volosovskyi 7ef2efaabd
Support for binance chains 2021-11-27 10:47:57 +02:00
Richard Ramos 38cc695753
waku2: log envelope hash and ids for all messages (#2427) 2021-11-11 12:13:55 -04:00
Anthony Laibe 26bfeddad4
feat: Rpc client manage multiple eth client (#2359) 2021-09-22 13:49:20 -04:00
Anthony Laibe 95dcbef5e5
feat: enable rinkeby for opensea (#2357) 2021-09-20 12:24:07 -04:00
Eric Mastro 06d4163de8
feat: Add Saved Addresses CRUD (#2356) 2021-09-10 14:08:22 -04:00
Anthony Laibe 07651d4d06
feat: enable wallet without network binding (#2349)
* feat: enable wallet without network binding

* feat: make transfer network aware

* feat: allow to pass initial networks via config

* fix: nil check and feed

* feat: Add documentation with better function name

* fix: do not init the manager more than once

* fix: PR feedbacks

* Bump version

* Update Jenkinsfile.tests

* Convert int to string

Co-authored-by: RichΛrd <info@richardramos.me>
2021-09-09 16:28:54 +02:00
Anthony Laibe 8f9c644dae
feat: fetch assets from opensea (#2320) 2021-08-20 15:53:24 -04:00
Roman Volosovskyi d1dc5f1e27
[wallet] Add wallet_getChachedBalances method 2021-05-25 10:03:05 +03:00
Roman Volosovskyi 6037570901
[wallet] Pending transactions API 2021-04-23 18:20:38 +03:00
Roman Volosovskyi f3ee49c110
[wallet] cleanup 2021-04-08 23:30:27 +03:00
Roman Volosovskyi 5a76e93063
[wallet] WatchTransaction method 2021-03-30 21:18:48 +03:00
Roman Volosovskyi 04fb7fdb3d
[wallet] GetTransfersByAddress for preloaded transfers 2021-03-24 17:35:34 +02:00
Roman Volosovskyi a7f2e94999
[wallet] Store account's last known balance and nonce 2021-03-15 16:18:12 +02:00
Roman Volosovskyi d21cd6aba1
[wallet] Set initial blocks range for a new empty account 2021-03-03 10:05:52 +02:00
Roman Volosovskyi 363ab0a2ab
[wallet] Avoid some unnecessary RPC requests
- avoid making RPC request for `zero - zero` range
- avoid checking of nonce for a lower block in the range if it is zero
  in a higher block
- on `wallet_getTransfersByAddress` scanning of history is skipped if
  zero block is already reached
- no need to fetch block num before fetching token balances
2021-02-17 13:55:27 +02:00
Samuel Hawksby-Robinson db962e0135 Added API for getting on ramp data 2021-02-17 09:53:45 +01:00
Roman Volosovskyi d8bccaff18
[wallet] Detect non archival RPC node 2021-01-25 14:52:14 +02:00
andrey 397ee840c6 [#2042] Wrong ERC20 decimal rounding in "Set max" 2020-09-22 16:00:47 +02:00
andrey 682722b973 add wallet favourites 2020-09-21 10:48:00 +02:00
RichΛrd 62c9d56fe8
Add API functions to store pending transaction data (#2037)
* Add API functions to store pending transaction data
* fix: code review
2020-09-14 09:39:24 -04:00
Roman Volosovskyi dc80cb0e06
Cleanup after tx fetching changes
- unused API methods are removed
- some unusued code is removed too
- API docs are updated

That's just a portion of clean up that should be done,
but the rest of it will probably happen in different PR
with changes to the way how we watch to chain updates.
2020-02-09 12:05:36 +02:00
Roman Volosovskyi a92a95cf83
status-im/status-react#9203 Faster tx fetching with less request
*** How it worked before this PR on multiaccount creation:
- On multiacc creation we scanned chain for eth and erc20 transfers. For
  each address of a new empty multiaccount this scan required
  1. two `eth_getBalance` requests to find out that there is no any
     balance change between zero and the last block, for eth transfers
  2. and `chain-size/100000` (currently ~100) `eth_getLogs` requests,
     for erc20 transfers
- For some reason we scanned an address of the chat account as well, and
  also accounts were not deduplicated. So even for an empty multiacc we
  scanned chain twice for each chat and main wallet addresses, in result
  app had to execute about 400 requests.
- As mentioned above, `eth_getBalance` requests were used to check if
  there were any eth transfers, and that caused empty history in case
  if user already used all available eth (so that both zero and latest
  blocks show 0 eth for an address). There might have been transactions
  but we wouldn't fetch/show them.
- There was no upper limit for the number of rpc requests during the
  scan, so it could require indefinite number of requests; the scanning
  algorithm was written so that we persisted the whole history of
  transactions or tried to scan form the beginning again in case of
  failure, giving up only after 10 minutes of failures. In result
  addresses with sufficient number of transactions would never be fully
  scanned and during these 10 minutes app could use gigabytes of
  internet data.
- Failures were caused by `eth_getBlockByNumber`/`eth_getBlockByHash`
  requests. These requests return significantly bigger responses than
  `eth_getBalance`/`eth_transactionsCount` and it is likely that
  execution of thousands of them in parallel caused failures for
  accounts with hundreds of transactions. Even for an account with 12k
  we could successfully determine blocks with transaction in a few
  minutes using `eth_getBalance` requests, but `eth_getBlock...`
  couldn't be processed for this acc.
- There was no caching for for `eth_getBalance` requests, and this
  caused in average 3-4 times more such requests than is needed.

*** How it works now on multiaccount creation:
- On multiacc creation we scan chain for last ~30 eth transactions and
  then check erc20 in the range where these eth transactions were found.
  For an empty address in multiacc this means:
  1. two `eth_getBalance` transactions to determine that there was no
     balance change between zero and the last block; two
     `eth_transactionsCount` requests to determine there are no outgoing
     transactions for this address; total 4 requests for eth transfers
  2. 20 `eth_getLogs` for erc20 transfers. This number can be lowered,
     but that's not a big deal
- Deduplication of addresses is added and also we don't scan chat
  account, so a new multiacc requires ~25 (we also request latest block
  number and probably execute a few other calls) request to determine
  that multiacc is empty (comparing to ~400 before)
- In case if address contains transactions we:
  1. determine the range which contains 20-25 outgoing eth/erc20
     transactions. This usually requires up to 10 `eth_transactionCount`
     requests
  2. then we scan chain for eth transfers using `eth_getBalance` and
     `eth_transactionCount` (for double checking zero balances)
  3. we make sure that we do not scan db for more than 30 blocks with
     transfers. That's important for accounts with mostly incoming
     transactions, because the range found on the first step might
     contain any number of incoming transfers, but only 20-25 outgoing
     transactions
  4. when we found ~30 blocks in a given range, we update initial
     range `from` block using the oldest found block
  5. and now we scan db for erc20transfers using `eth_getLogs`
     `oldest-found-eth-block`-`latest-block`, we make not more than 20 calls
  6. when all blocks which contain incoming/outgoing transfers for a
     given address are found, we save these blocks to db and mark that
     transfers from these blocks are still to be fetched
  7. Then we select latest ~30 (the number can be adjusted) blocks from
     these which were found and fetch transfers, this requires 3-4
     requests per transfer.
  8. we persist scanned range so that we know were to start next time
  9. we dispatch an event which tells client that transactions are found
  10. client fetches latest 20 transfers
- when user presses "fetch more" button we check if app's db contains next
  20 transfers, if not we scan chain again and return transfers after

small fixes
2020-01-23 10:36:11 +02:00
André Medeiros 0571f561f0
APIs to Get and Create custom Tokens (#1717) 2019-12-10 12:31:08 -05:00