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91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
package command
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import (
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"github.com/goraft/raft"
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"github.com/otoolep/rqlite/db"
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"github.com/otoolep/rqlite/log"
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)
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// ExecuteCommand encapsulates a sqlite statement.
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type ExecuteCommand struct {
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Stmt string `json:"stmt"`
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}
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// NewExecuteCommand creates a new Execute command.
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func NewExecuteCommand(stmt string) *ExecuteCommand {
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return &ExecuteCommand{
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Stmt: stmt,
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}
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}
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// CommandName of the ExecuteCommand in the log.
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func (c *ExecuteCommand) CommandName() string {
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return "execute"
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}
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// Apply executes an sqlite statement.
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func (c *ExecuteCommand) Apply(server raft.Server) (interface{}, error) {
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log.Tracef("Applying ExecuteCommand: '%s'", c.Stmt)
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db := server.Context().(*db.DB)
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return nil, db.Execute(c.Stmt)
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}
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// TransactionExecuteCommandSet encapsulates a set of sqlite statement, which are executed
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// within a transaction.
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type TransactionExecuteCommandSet struct {
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Stmts []string `json:"stmts"`
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}
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// NewTransactionExecuteCommandSet Creates a new set of sqlite commands, which
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// execute within a transaction.
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func NewTransactionExecuteCommandSet(stmts []string) *TransactionExecuteCommandSet {
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return &TransactionExecuteCommandSet{
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Stmts: stmts,
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}
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}
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// CommandName of the TransactionExecute command in the log.
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func (c *TransactionExecuteCommandSet) CommandName() string {
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return "transaction_execute"
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}
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// Apply executes a set of sqlite statements, within a transaction. All statements
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// will take effect, or none.
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func (c *TransactionExecuteCommandSet) Apply(server raft.Server) (interface{}, error) {
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log.Tracef("Applying TransactionExecuteCommandSet of size %d", len(c.Stmts))
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commitSuccess := false
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db := server.Context().(*db.DB)
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defer func() {
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if !commitSuccess {
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err := db.RollbackTransaction()
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if err != nil {
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log.Errorf("Failed to rollback transaction: %s", err.Error())
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}
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}
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}()
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err := db.StartTransaction()
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if err != nil {
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log.Errorf("Failed to start transaction: %s", err.Error())
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return nil, err
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}
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for i := range c.Stmts {
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err = db.Execute(c.Stmts[i])
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if err != nil {
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log.Errorf("Failed to execute statement within transaction: %s", err.Error())
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return nil, err
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}
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}
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if err = db.CommitTransaction(); err != nil {
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log.Errorf("Failed to commit transaction: %s", err.Error())
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return nil, err
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}
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commitSuccess = true
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return nil, nil
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}
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