This PR offers two more database sub commands for exporting and importing data.
Two exporters are implemented: preimage and snapshot data respectively.
The import command is generic, it can take any data export and import into leveldb.
The data format has a 'magic' for disambiguation, and a version field for future compatibility.
It is because write known block only checks block and state without snapshot, which could lead to gap between newest snapshot and newest block state. However, new blocks which would cause snapshot to become fixed were ignored, since state was already known.
Co-authored-by: Gary Rong <garyrong0905@gmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
* core: write test showing that TD is not stored properly at genesis
The ToBlock method applies a default value for an empty
difficulty value. This default is not carried over through the Commit
method because the TotalDifficulty database write writes the
original difficulty value (nil) instead of the defaulty value
present on the genesis Block.
Date: 2021-10-22 08:25:32-07:00
Signed-off-by: meows <b5c6@protonmail.com>
* core: write TD value from Block, not original genesis value
This an issue where a default TD value was not written to
the database, resulting in a 0 value TD at genesis.
A test for this issue was provided at 90e3ffd393
Date: 2021-10-22 08:28:00-07:00
Signed-off-by: meows <b5c6@protonmail.com>
* core: fix tests by adding GenesisDifficulty to expected result
See prior two commits.
Date: 2021-10-22 09:16:01-07:00
Signed-off-by: meows <b5c6@protonmail.com>
* les: fix test with genesis change
Co-authored-by: Martin Holst Swende <martin@swende.se>
This PR adds a new accessor method to the freezer database. This new view offers a consistent interface, guaranteeing that all individual tables (headers, bodies etc) are all on the same number, and that this number is not changes (added/truncated) while the operation is performing.
* core/state/snapshot: fix BAD BLOCK error when snapshot is generating
* core/state/snapshot: alternative fix for the snapshot generator
* add comments and minor update
Co-authored-by: Martin Holst Swende <martin@swende.se>
This doesn't fix all go-critic warnings, just the most serious ones.
Co-authored-by: Felix Lange <fjl@twurst.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
This removes some code:
- The clique engine calculated the snapshot twice when verifying headers/blocks.
- The method GetBlockHashesFromHash in Header/Block/Lightchain was only used by tests. It
is now removed from the API.
- The method GetTdByHash internally looked up the number before calling GetTd(hash, num).
In many cases, callers already had the number, and used this method just because it has a
shorter name. I have removed the method to make the API surface smaller.
This change removes misuses of sync.WaitGroup in BlockChain. Before this change,
block insertion modified the WaitGroup counter in order to ensure that Stop would wait
for pending operations to complete. This was racy and could even lead to crashes
if Stop was called at an unfortunate time. The issue is resolved by adding a specialized
'closable' mutex, which prevents chain modifications after stopping while also
synchronizing writers with each other.
Co-authored-by: Felix Lange <fjl@twurst.com>
This resolves a long-standing TODO. The point of copying the address is
to ensure that all data referenced by types.Transaction is independent of the
data passed into the constructor.
Co-authored-by: Felix Lange <fjl@twurst.com>
* core/types: rm extranous check in test
* core/rawdb: add lightweight types for block logs
* core/rawdb,eth: use lightweight accessor for log filtering
* core/rawdb: add bench for decoding into rlpLogs
This change introduces 2 new optional methods; `enter()` and `exit()` for js tracers, and makes `step()` optiona. The two new methods are invoked when entering and exiting a call frame (but not invoked for the outermost scope, which has it's own methods). Currently these are the data fields passed to each of them:
enter: type (opcode), from, to, input, gas, value
exit: output, gasUsed, error
The PR also comes with a re-write of the callTracer. As a backup we keep the previous tracing script under the name `callTracerLegacy`. Behaviour of both tracers are equivalent for the most part, although there are some small differences (improvements), where the new tracer is more correct / has more information.
This change is a rewrite of the freezer code.
When writing ancient chain data to the freezer, the previous version first encoded each
individual item to a temporary buffer, then wrote the buffer. For small item sizes (for
example, in the block hash freezer table), this strategy causes a lot of system calls for
writing tiny chunks of data. It also allocated a lot of temporary []byte buffers.
In the new version, we instead encode multiple items into a re-useable batch buffer, which
is then written to the file all at once. This avoids performing a system call for every
inserted item.
To make the internal batching work, the ancient database API had to be changed. While
integrating this new API in BlockChain.InsertReceiptChain, additional optimizations were
also added there.
Co-authored-by: Felix Lange <fjl@twurst.com>
* core/rawdb: implement sequential reads in freezer_table
* core/rawdb, ethdb: add sequential reader to db interface
* core/rawdb: lint nitpicks
* core/rawdb: fix some nitpicks
* core/rawdb: fix flaw with deferred reads not being performed
* core/rawdb: better documentation
