storage

Documentation

Index

• type SerialTransaction
• type SnapshotTree
  • func NewSnapshotTree(base state.StorageSnapshot) SnapshotTree
  • func (tree SnapshotTree) Append(update *state.ExecutionSnapshot) SnapshotTree
  • func (tree SnapshotTree) Get(id flow.RegisterID) (flow.RegisterValue, error)
• type Transaction
• type TransactionComitter

Types

type SerialTransaction

type SerialTransaction struct {
	state.NestedTransaction
	derived.DerivedTransactionCommitter
}

TODO(patrick): implement proper transaction.

type SnapshotTree

type SnapshotTree struct {
	// contains filtered or unexported fields
}

SnapshotTree is a simple LSM tree representation of the key/value storage at a given point in time.

func NewSnapshotTree

func NewSnapshotTree(base state.StorageSnapshot) SnapshotTree

NewSnapshotTree returns a tree with keys/values initialized to the base storage snapshot.

func (SnapshotTree) Append

func (tree SnapshotTree) Append(
	update *state.ExecutionSnapshot,
) SnapshotTree

Append returns a new tree with updates from the execution snapshot "applied" to the original original tree.

func (SnapshotTree) Get

func (tree SnapshotTree) Get(id flow.RegisterID) (flow.RegisterValue, error)

Get returns the register id's value.

type Transaction

type Transaction interface {
	state.NestedTransaction
	derived.DerivedTransaction
}

type TransactionComitter

type TransactionComitter interface {
	Transaction

	// Validate returns nil if the transaction does not conflict with
	// previously committed transactions.  It returns an error otherwise.
	Validate() error

	// Commit commits the transaction.  If the transaction conflict with
	// previously committed transactions, an error is returned and the
	// transaction is not committed.
	Commit() error
}