* Migrations in place, how to run them?
* Remove down migrations and touch database.go
* Database and Database Test package in place, added functions to get and store app metrics
* make generate output
* Minor bug fix on app metrics insert and select
* Add a validation layer to restrict what can be saved in the database
* Make validation more terse, throw error if schema doesn't exist, expose appmetrics service
* service updates
* Compute all errors before sending them out
* Trying to bring a closjure to appmetrics go
* Expose appmetrics via an api, skip fancy
* Address value as Jason Dawt Rawmasage to ease parsing
* Introduce a buffered chan with magic cap of 8 to minimize writes to DB. Tests for service and API. Also expose GetAppMetrics function.
* Lint issues
* Remove autoincrement, undo waku.json changes, fix error being shadowed, return nil where nil ought to be returned, get rid of buffered channel
* Bump migration number
* Fix API factory usage
* Add comment re:json.RawMessage instead of strings
* Get rid of test vars, throw save error inside the loop
* Update version
Co-authored-by: Samuel Hawksby-Robinson <samuel@samyoul.com>
- old existing ranges are merged when wallet service is started
- a new range is merged with an existing one if possible
This will decrease the number of entries in blocks_range table as
currently it can grow indefinitely (@flexsurfer reported 23307 entries).
This change is also needed for further optimisations of RPC usage.
- Wallet service is not started on foreground event on status-go side
anymore, it leaves a client side opportunity to decide whether new
blocks should be watched.
- `watchNewBlocks` parameter is added to `StartWallet`.
- Some requests are removed/moved to the place where they are necessary.
Storing absolute path for different configs breaks compatibility on iOS
as app's dir is changed after upgrade. The solution is to store relative
paths and to concatenate it with `backend.rootDataDir`. The only
exception is `LogFile` as it is stored outside `backend.rootDataDir` on
Android. `LogDir` config was added to allow adding of custom dir for log
file.
Configs concerned:
`DataDir`
`LogDir`
`LogFile`
`KeystoreDir`
`BackupDisabledDataDir`
*** 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
Move settings table schema from a key-value store to a one row table with many columns.
We now save the first row with initial data in saveAccountAndLogin and follow up saveSetting calls are only saving one setting at a time.
Co-authored-by: Adam Babik <a.babik@designfortress.com>
RichΛrd
Andrea Maria Piana
Roman Volosovskyi
Shivek Khurana
Samuel Hawksby-Robinson
Gheorghe Pinzaru
Adam Babik
Pedro Pombeiro
Pedro Pombeiro
Adam Babik
yenda