- Add error returns to Database.Reader() and NodeIterator() methods
- Introduce committed flag to prevent usage of tries after commit
- Update callers to handle new error signatures
- Add MustNodeIterator() helper for backward compatibility
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
* trie: add node type common package
In trie/types package, a few node wrappers are defined, which will be used
in both trie package, trie/snap package, etc. Therefore, a standalone common
package is created to put these stuffs.
* trie: rename trie/types to trie/trienode
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
In this PR, all TryXXX(e.g. TryGet) APIs of trie are renamed to XXX(e.g. Get) with an error returned.
The original XXX(e.g. Get) APIs are renamed to MustXXX(e.g. MustGet) and does not return any error -- they print a log output. A future PR will change the behaviour to panic on errorrs.
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
This PR introduces a node scheme abstraction. The interface is only implemented by `hashScheme` at the moment, but will be extended by `pathScheme` very soon.
Apart from that, a few changes are also included which is worth mentioning:
- port the changes in the stacktrie, tracking the path prefix of nodes during commit
- use ethdb.Database for constructing trie.Database. This is not necessary right now, but it is required for path-based used to open reverse diff freezer
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
This PR fixes an error in trie commit. If the trie.root is nil, it can be two possible scenarios:
- The trie was empty, and no change happens
- The trie was non-empty and all nodes are dropped
For the latter one, we should collect the deletions and apply them into database(e.g. in PBSS).
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
This PR includes minor updates to comments in trie/committer that reference insertion to the db, and adds an err != nil check for the return value of preimages.commit.
Co-authored-by: Darioush Jalali <darioush.jalali@avalabs.org>
* core: use TryGetAccount to read where TryUpdateAccount has been used to write
* Gary's review feedback
* implement Gary's suggestion
* fix bug + rename NewSecure into NewStateTrie
* trie: add backwards-compatibility aliases for SecureTrie
* Update database.go
* make the linter happy
Co-authored-by: Guillaume Ballet <3272758+gballet@users.noreply.github.com>
Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Trie tracer is an auxiliary tool to capture all deleted nodes
which can't be captured by trie.Committer. The deleted nodes
can be removed from the disk later.
Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
This functionality is needed in new path-based storage scheme, but
can be implemented in a seperate PR though.
When an account is deleted, then all the storage slots should be
nuked out from the disk as well. In hash-based storage scheme they
are still left in the disk but in new scheme, they will be iterated
and marked as deleted.
But why the NodeBlob API is needed in this scenario? Because when
the node is marked deleted, the previous value is also required to
be recorded to construct the reverse diff.
Co-authored-by: Gary Rong <garyrong0905@gmail.com>
* trie: update tests to check commit integrity
* trie: polish committer
* trie: fix typo
* trie: remove hasvalue notion
According to the benchmarks, type assertion between the pointer and
interface is extremely fast.
BenchmarkIntmethod-12 1000000000 1.91 ns/op
BenchmarkInterface-12 1000000000 2.13 ns/op
BenchmarkTypeSwitch-12 1000000000 1.81 ns/op
BenchmarkTypeAssertion-12 2000000000 1.78 ns/op
So the overhead for asserting whether the shortnode has "valuenode"
child is super tiny. No necessary to have another field.
* trie: linter nitpicks
Co-authored-by: Martin Holst Swende <martin@swende.se>
The current trie memory database/cache that we do pruning on stores
trie nodes as binary rlp encoded blobs, and also stores the node
relationships/references for GC purposes. However, most of the trie
nodes (everything apart from a value node) is in essence just a
collection of references.
This PR switches out the RLP encoded trie blobs with the
collapsed-but-not-serialized trie nodes. This permits most of the
references to be recovered from within the node data structure,
avoiding the need to track them a second time (expensive memory wise).
