Commit graph

12 commits

Author SHA1 Message Date
Oliver Gugger
a27bab6eb9
walletdb: add View and Update to DB interface
We want to make sure that every database backend has their own
implementation of the View() and Update() methods to make sure any
custom retry/commit/rollback strategies are used even when invoked
through the package-provided View() and Update() functions.
2021-07-29 16:53:09 +02:00
Andras Banki-Horvath
c6f007b74a
walletdb: add ForEachBucket to the ReadTx with bbolt implementation
This commit extends the ReadTx (and ReadWriteTx) interface with
ForEachBucket which can be used to iterate through all top level
buckets. This is a missing piece from the walletdb abstraction which
will allow us to iterate all keys in a walletdb opening the possibility
to build generic tools to browse and edit walletdb files regardless of
the underlying driver.
2021-04-27 11:14:43 +02:00
Olaoluwa Osuntokun
2c6a714c14
walletdb: add new Batch package-level function
In this commit, we add a new package-level function to emulate the
existing Batch interface for bbolt. We do this via a new super-set
interface which is then checked against in the main implementation of
the Batch method.
2020-01-15 04:52:44 -08:00
Olaoluwa Osuntokun
da2fe0e3b0
walletdb: ensure transactions are rolled back on panic 2020-01-15 04:52:34 -08:00
Olaoluwa Osuntokun
0bcbb4cc4a
walletdb: add sequence methods to main interface, update bdb to implement
In this commit, we add the trio of sequence based methods that bbolt
ships with to the main bucket interface. We do this in order to easily
allow walletdb as is to be slotted into place where bbolt is currently
used, without sacrificing any functionality.
2020-01-15 04:51:15 -08:00
Johan T. Halseth
3378be750b
walletdb/interface: add OnCommit and Tx methods
This commit adds the method OnCommit to the ReadWriteTx interface,
making it possible to add closures to be executed once the transaction
is commitited. The method Tx is added to the ReadWriteBucket interface,
for getting the bucket's underlying tx.

The bdb implementation is updated to satisfy the interface change.
2019-02-14 09:19:18 +01:00
Josh Rickmar
4656a00705 Improve wallet atomicity.
This changes the database access APIs and each of the "manager"
packages (waddrmgr/wstakemgr) so that transactions are opened (only)
by the wallet package and the namespace buckets that each manager
expects to operate on are passed in as parameters.

This helps improve the atomicity situation as it means that many
calls to these APIs can be grouped together into a single
database transaction.

This change does not attempt to completely fix the "half-processed"
block problem.  Mined transactions are still added to the wallet
database under their own database transaction as this is how they are
notified by the consensus JSON-RPC server (as loose transactions,
without the rest of the block that contains them). It will make
updating to a fixed notification model significantly easier, as the
same "manager" APIs can still be used, but grouped into a single
atomic transaction.
2018-05-23 19:38:56 -07:00
Josh Rickmar
fcccae3d1a Manage wallet db namespaces from wallet package.
This changes the wallet.Open function signature to remove the database
namespace parameters.  This is done so that the wallet package itself
is responsible for the location and opening of these namespaces from
the database, rather than requiring the caller to open these ahead of
time.

A new wallet.Create function has also been added.  This function
initializes a new wallet in an empty database, using the same
namespaces as wallet.Open will eventually use.  This relieves the
caller from needing to manage wallet database namespaces explicitly.

Fixes .
2016-03-21 11:25:28 -04:00
Josh Rickmar
5140086f6e Use LICENSE file and short license headers. 2016-02-28 22:22:34 -05:00
Dave Collins
c820c8a015 Relicense to the btcsuite developers. 2015-05-01 12:20:05 -05:00
Josh Rickmar
437c7b3e59 Add cursor functionality to walletdb. 2015-04-20 18:20:19 -04:00
Dave Collins
e8b4de9379 Implement new namespaced db package named walletdb.
This commit implements a new namespaced db package which  is intended to
be used be wallet and any sub-packages as its data storage mechanism.

- Key/value store
- Namespace support
- Allows multiple packages to have their own area in the database without
  worrying about conflicts
- Read-only and read-write transactions with both manual and managed modes
- Nested buckets
- Supports registration of backend databases
- Comprehensive test coverage
2014-11-10 16:01:45 -06:00