This replaces the previously hardcoded "numberOfAdditionalBatchesToSearch" variable, and specifies the minimum number of empty consecutive addresses required before a set of wallet transactions is considered complete. Used for foreign transaction lists and balances.
This is a simple way to discard the 5-minute online account timestamps (from out of date nodes) once the switch to 30-minute online account timestamps has taken place.
Online account nonces are appended to the onlineAccountsSignatures to avoid the need for a new field, but it probably makes more sense to separate them.
Although BlockMinter could reattach a repository session to its cache of potential blocks,
and these blocks would in turn reattach that repository session to their transactions,
further transaction-specific fields (e.g. creator PublicKeyAccount) were not being updated.
This would lead to NPEs like the following:
Exception in thread "BlockMinter" java.lang.NullPointerException
at org.qortal.repository.hsqldb.HSQLDBRepository.cachePreparedStatement(HSQLDBRepository.java:587)
at org.qortal.repository.hsqldb.HSQLDBRepository.prepareStatement(HSQLDBRepository.java:569)
at org.qortal.repository.hsqldb.HSQLDBRepository.checkedExecute(HSQLDBRepository.java:609)
at org.qortal.repository.hsqldb.HSQLDBAccountRepository.getBalance(HSQLDBAccountRepository.java:327)
at org.qortal.account.Account.getConfirmedBalance(Account.java:72)
at org.qortal.transaction.MessageTransaction.isValid(MessageTransaction.java:200)
at org.qortal.block.Block.areTransactionsValid(Block.java:1190)
at org.qortal.block.Block.isValid(Block.java:1137)
at org.qortal.controller.BlockMinter.run(BlockMinter.java:301)
where the Account has an associated repository session which is now obsolete.
This commit reverts BlockMinter back to obtaining a repository session before entering main loop.
To prevent a single or very small number of minters receiving the rewards for an entire tier, share bins can now require "activation". This adds the requirement that a minimum number of accounts must be present in a share bin before it is considered active. When inactive, the rewards and minters are added to the previous tier.
Summary of new functionality:
- If a share bin has more than one, but less than 30 accounts present, the rewards and accounts are shifted to the previous share bin.
- This process is iterative, so the accounts can shift through multiple tiers until the minimum number of accounts is met, OR the share bin's starting level is less than shareBinActivationMinLevel.
- Applies to level 7+, so that no backwards support is needed. It will only take effect once the first account reaches level 7.
This requires hot swapping the sharesByLevel data to combine tiers where needed, so is a considerable shift away from the immutable array that was in place previously.
All existing and new unit tests are now passing, however a lot more testing will be needed.
- This adds mempow requirements to online account importing (after activation timestamp), however doesn't yet add any requirements to block validation.
- It also causes the 'next' online accounts timestamp to be computed in addition to the 'current', so that the computed nonce value is ready when the next online accounts timestamp window begins.
Online account credit is a more useful definition of "minting" than block signing, from the user's perspective. Should bring UI minting/syncing status in line with the core's systray status.
- Reduce concurrent reward share limit from 6 to 3 (or from 5 to 2 when including self share) - as per community vote.
- Founders remain at 6 (5 when including self share) - also decided in community vote.
- When all slots are being filled, require that at least one is a self share, so that not all can be used for sponsorship.
- Activates at future undecided timestamp.
We already mark peers as misbehaved if they returned invalid signatures, but this wasn't sufficient when multiple copies of the same invalid block exist on the network (e.g. after a hard fork). In these cases, we need to be more proactive to avoid syncing with these peers, to increase the chances of preserving other candidate blocks.
Previously, a peer would be continuously considered not 'old' if it had a connection attempt in the past day. This prevented some peers from being removed, causing nodes to hold a large repository of peers. On slower systems, this large number of known peers resulted in low numbers of outbound connections being made, presumably because of the time taken to iterate through dataset, using up a lot of allKnownPeers lock time.
On devices that experienced the problem, it could be solved by deleting all known peers. This adds confidence that the old peers were the problem.
Previously, a peer would be continuously considered not 'old' if it had a connection attempt in the past day. This prevented some peers from being removed, causing nodes to hold a large repository of peers. On slower systems, this large number of known peers resulted in low numbers of outbound connections being made, presumably because of the time taken to iterate through dataset, using up a lot of allKnownPeers lock time.
On devices that experienced the problem, it could be solved by deleting all known peers. This adds confidence that the old peers were the problem.
- Show "Minting" as long as online accounts are submitted to the network (previously it related to block signing).
- Fixed bug causing it to regularly show "Synchronizing 100%".
- Only show "Synchronizing" if the chain falls more than 2 hours behind - anything less is unnecessary noise.
Symptoms are:
* AutoUpdate trying to run new ApplyUpdate process, but nothing appears in log-apply-update.?.txt
* Main qortal.jar process continues to run without updating
* Last AutoUpdate line in log.txt.? is:
2022-06-18 15:42:46 INFO AutoUpdate:258 - Applying update with: /usr/local/openjdk11/bin/java -Djava.net.preferIPv4Stack=false -Xss256k -Xmx1024m -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=127.0.0.1:5005 -cp new-qortal.jar org.qortal.ApplyUpdate
Changes are:
* child process now inherits parent's stdout / stderr (was piped from parent)
* child process is given a fresh stdin, which is immediately closed
* AutoUpdate now converts -agentlib JVM arg to -DQORTAL_agentlib
* ApplyUpdate converts -DQORTAL_agentlib to -agentlib
The latter two changes are to prevent a conflict where two processes try to reuse the same JVM debugging port number.
Reduced AT state info from per-AT address + state hash + fees to AT count + total AT fees + hash of all AT states.
Modified Block and Controller to support above. Controller needs more work regarding CachedBlockMessages.
Note that blocks fetched from archive are in old V1 format.
Changed Triple<BlockData, List<TransactionData>, List<ATStateData>> to BlockTransformation to support both V1 and V2 forms.
Set min peer version to 3.3.203 in BlockV2Message class.
Bump v3 min peer version from 3.2.203 to 3.3.203
No need for toOnlineAccountTimestamp(long) as we only ever use getCurrentOnlineAccountTimestamp().
Latter now returns Long and does the call to NTP.getTime() on behalf of caller, removing duplicated NTP.getTime() calls and null checks in multiple callers.
Add aggregate-signature feature-trigger timestamp threshold checks where needed, near sign() and verify() calls.
Improve logging - but some logging will need to be removed / reduced before merging.
Aggregated signature should reduce block payload significantly,
as well as associated network, memory & CPU loads.
org.qortal.crypto.BouncyCastle25519 renamed to Qortal25519Extras.
Our class provides additional features such as DH-based shared secret,
aggregating public keys & signatures and sign/verify for aggregate use.
BouncyCastle's Ed25519 class copied in as BouncyCastleEd25519,
but with 'private' modifiers changed to 'protected',
to allow extension by our Qortal25519Extras class,
and to avoid lots of messy reflection-based calls.
Slight optimization to BlockMinter by adding OnlineAccountsManager.hasOnlineAccounts():boolean instead of returning actual data, only to call isEmpty()!
Move online account cache code from Block into OnlineAccountsManager, simplifying Block code and removing duplicated caches from Block also.
This tidies up those remaining set-based getters in OnlineAccountsManager.
No need for currentOnlineAccountsHashes's inner Map to be sorted so addAccounts() creates new ConcurentHashMap insteaad of ConcurrentSkipListMap.
Changed GetOnlineAccountsV3Message to use a single byte for count of hashes as it can only be 1 to 256.
256 is represented by 0.
Comments tidy-up.
Change v3 broadcast interval from 10s to 15s.
Adding support for GET_ONLINE_ACCOUNTS_V3 to Controller, which calls OnlineAccountsManager.
With OnlineAccountsV3, instead of nodes sending their list of known online accounts (public keys),
nodes now send a summary which contains hashes of known online accounts, one per timestamp + leading-byte combo.
Thus outgoing messages are much smaller and scale better with more users.
Remote peers compare the hashes and send back lists of online accounts (for that timestamp + leading-byte combo) where hashes do not match.
Massive rewrite of OnlineAccountsManager to maintain online accounts.
Now there are three caches:
1. all online accounts, but split into sets by timestamp
2. 'hashes' of all online accounts, one hash per timestamp+leading-byte combination
Mainly for efficient use by GetOnlineAccountsV3 message constructor.
3. online accounts for the highest blocks on our chain to speed up block processing
Note that highest blocks might be way older than 'current' blocks if we're somewhat behind in syncing.
Other OnlineAccountsManager changes:
* Use scheduling executor service to manage subtasks
* Switch from 'synchronized' to 'concurrent' collections
* Generally switch from Lists to Sets - requires improved OnlineAccountData.hashCode() - further work needed
* Only send V3 messages to peers with version >= 3.2.203 (for testing)
* More info on which online accounts lists are returned depending on use-cases
To test, change your peer's version (in pom.xml?) to v3.2.203.
Reduced AT state info from per-AT address + state hash + fees to AT count + total AT fees + hash of all AT states.
Modified Block and Controller to support above. Controller needs more work regarding CachedBlockMessages.
Note that blocks fetched from archive are in old V1 format.
Changed Triple<BlockData, List<TransactionData>, List<ATStateData>> to BlockTransformation to support both V1 and V2 forms.
Set min peer version to 3.3.203 in BlockV2Message class.
A full sync is unavoidable for P2SH redeem/refund, so we need to be able to save our progress. Creating a new null seed wallet each time isn't an option because it relies on having a recent checkpoint to avoid having to sync large amounts of blocks every time (sync is per wallet, not per node).
This allows for compatibility with TRANSFER_PRIVS validation in commit 8950bb7, which treats any account with a non-null reference as "existing". It also avoids possible unknown side effects from trying to process and store transactions with a null reference - something that wouldn't have been possible until the validation was removed.
This should prevent the failed transactions that are encountered when issuing two or more in a short space of time. Using a feature trigger (hard fork) to release this, to avoid potential consensus confusion around the time of the update (older versions could consider the main chain invalid until updating).
This will hopefully reduce the number of failed tradeoffer listings that result in a nonfunctional tradebot (and subsequent PENDING status shown in the UI)
This is needed to allow redeem/refund of P2SH without having an actively synced and initialized wallet. It also ultimately avoids us having to retain the wallet entropy in the trade bot states. Various safety checks have been introduced to make sure that a disposable wallet is never used for anything other than P2SH redeem/refund.
This has been modified to a) use full public keys instead of PKH, and b) hand off all transaction building, signing, and broadcasting to the (heavily customized) Pirate light wallet library.
Currently, new transactions take a very long time to be included in each block (or reach the intended recipient), because each node has to obtain a repository lock and import the transaction before it notifies its peers. This can take a long time due to the lock being held by the block minter or synchronizer, and this compounds with every peer that the transaction is routed through.
Validating signatures doesn't require a lock, and so can take place very soon after receipt of a new transaction. This change causes each node to broadcast a new transaction to its peers as soon as its signature is validated, rather than waiting until after the import.
When a notified peer then makes a request for the transaction data itself, this can now be loaded from the sig-valid import queue as an alternative to the repository (since they won't be in the repository until after the import, which likely won't have happened yet).
One small downside to this approach is that each unconfirmed transaction is now notified twice - once after the signature is deemed valid, and again in Controller.onNewTransaction(), but this should be an acceptable trade off given the speed improvements it should achieve. Another downside is that it could cause invalid transactions (with valid signatures) to propagate, but these would quickly be added to each peer's invalidUnconfirmedTransactions list after the import failure, and therefore be ignored.
Importing has to be single threaded since it requires the database lock, but there's nothing to stop us from validating signatures on multiple threads, as no lock is required. So it makes sense to separate these two functions to allow for possible multi threaded signature validation in the future, to speed up the process.
Everything remains single threaded in this commit. It should be functionally the same as before, to reduce risk.
Note: this relies on (a modified version of) liblitewallet-jni which is not included, but will ultimately be compiled for each supported architecture and hosted on QDN.
LiteWalletJni code is based on https://github.com/PirateNetwork/cordova-plugin-litewallet - thanks to @CryptoForge for the help in getting this up and running.
Note: it's important that this timestamp is set on a 1-hour boundary (such as 16:00:00) to ensure a clean switchover.
# Conflicts:
# src/main/java/org/qortal/block/BlockChain.java
Also removed CrossChainDigibyteACCTv1Resource, since this is unused, and it seems excessive to maintain support of this for every coin (and potentially every ACCT version).
Direct connections for arbitrary data are currently unlikely to succeed, because those allowing incoming connections generally have their slots maxed out and have reached maxPeers. The idea here is that some connections remain reserved for dedicated arbitrary data transfers, therefore temporarily circumventing the limit (up to a defined maximum number of reserved connections).
Arbitrary data connections will auto disconnect after 2 minutes (we might be able to reduce this at a later date), and it also probably makes sense for the requesting node to disconnect as soon as it has all the chunks that it needs (this part isn't implemented yet).
One downside of this feature is that the listen socket is now going to be accepting connections most of the time, since it is unlikely that we will regularly have 4 data peers connected. This could be improved by modifying the OP_ACCEPT behaviour based on whether we are expecting any data peers to connect. In most cases, this would allow it to remain closed. But for the sake of simplicity I will leave that optimization for a future commit.
This is used to force a quick disconnect for peers that are only connecting for the purposes of requesting data for a specific arbitrary transaction signature.
