Documentation
¶
Overview ¶
Package tx provides transactional interfaces for atomic storage operations. It supports conditional execution with predicates for complex transaction logic.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Factory ¶ added in v1.5.0
Factory creates new transactions bound to a storage instance.
It is the lightest "begin a transaction" surface — bind once via Storage.TxFactory and pass the resulting Factory around to components that only need to start transactions, instead of handing out the full Storage. A Storage's Tx method satisfies this signature directly, so a Factory can also be obtained as a method value: var f tx.Factory = s.Tx.
type RequestResponse ¶
type RequestResponse struct {
// Values contains the result data for Get operations.
Values []kv.KeyValue
}
RequestResponse represents the response for an individual transaction operation.
type Response ¶
type Response struct {
// Succeeded indicates whether the transaction predicates evaluated to true.
Succeeded bool
// Results contains the responses for each operation in Then/Else blocks.
Results []RequestResponse
}
Response contains the result of a transaction execution.
type Tx ¶
type Tx interface {
// If specifies predicates for conditional transaction execution.
// Empty predicate list means always true (unconditional execution).
If(predicates ...predicate.Predicate) Tx
// Then specifies operations to execute if predicates evaluate to true.
// At least one Then call is required.
Then(operations ...operation.Operation) Tx
// Else specifies operations to execute if predicates evaluate to false.
// This is optional.
Else(operations ...operation.Operation) Tx
// Commit atomically executes the transaction and returns the result.
Commit() (Response, error)
}
Tx represents a transactional interface for atomic operations. Transactions support conditional execution with predicates.
Source Files