bfdf7a2cf2
* [NOD-237] Implemented transaction mass. * [NOD-237] Added transaction mass validation to the mempool. * [NOD-237] Made blockMaxMassMax not rely on MaxBlockPayload. * [NOD-237] Added comments describing the new constants in validate.go. * [NOD-237] Changed the default blockmaxmass to 10,000,000. * [NOD-237] Fixed a comment that erroneously didn't refer to mass. * [NOD-237] Added comments to ValidateTxMass and CalcTxMass. * [NOD-237] Renamed "size" to "byte". Made validateBlockMass exit early if validation fails. Fixed unit names in comments. In CalcTxMass, moved summing of mass to the bottom of the function. * [NOD-237] Instead of ErrMassTooHigh, renamed ErrBlockTooBig and ErrTxTooBig. Replaced wire.MaxBlockPayload with MaxMassPerBlock. * [NOD-237] Fixed sanity checks related to block size in commands. * [NOD-237] To use up less memory during testing, made the mass in the "too big" test come from pkScripts rather than input bytes. * [NOD-237] Added an overflow check to validateBlockMass.
database
Package database provides a block and metadata storage database.
Please note that this package is intended to enable btcd to support different database backends and is not something that a client can directly access as only one entity can have the database open at a time (for most database backends), and that entity will be btcd.
When a client wants programmatic access to the data provided by btcd, they'll likely want to use the rpcclient package which makes use of the JSON-RPC API.
However, this package could be extremely useful for any applications requiring Bitcoin block storage capabilities.
The default backend, ffldb, has a strong focus on speed, efficiency, and robustness. It makes use of leveldb for the metadata, flat files for block storage, and strict checksums in key areas to ensure data integrity.
Feature Overview
- Key/value metadata store
- Bitcoin block storage
- Efficient retrieval of block headers and regions (transactions, scripts, etc)
- Read-only and read-write transactions with both manual and managed modes
- Nested buckets
- Iteration support including cursors with seek capability
- Supports registration of backend databases
- Comprehensive test coverage
Installation and Updating
$ go get -u github.com/daglabs/btcd/database
Examples
-
Basic Usage Example
Demonstrates creating a new database and using a managed read-write transaction to store and retrieve metadata. -
Block Storage and Retrieval Example
Demonstrates creating a new database, using a managed read-write transaction to store a block, and then using a managed read-only transaction to fetch the block.
License
Package database is licensed under the copyfree ISC License.