45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
package commonclient
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import (
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"fmt"
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"github.com/google/uuid"
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"github.com/nspcc-dev/neo-go/pkg/rpcclient/unwrap"
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"github.com/nspcc-dev/neo-go/pkg/smartcontract"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
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)
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// ReadIteratorItems calls method that returns iterator and traverses the iterator until all items are read into array.
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func ReadIteratorItems(inv Invoker, batchSize int, contract util.Uint160, method string, params ...any) ([]stackitem.Item, error) {
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if batchSize <= 0 {
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panic("batch size must be positive")
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}
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script, err := smartcontract.CreateCallAndPrefetchIteratorScript(contract, method, batchSize, params...)
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if err != nil {
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return nil, fmt.Errorf("couldn't create unwrap script: %w", err)
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}
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arr, sessionID, iter, err := unwrap.ArrayAndSessionIterator(inv.Run(script))
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if err != nil {
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return nil, fmt.Errorf("unwrap session iterator: %w", err)
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}
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if (sessionID == uuid.UUID{}) {
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return arr, nil
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}
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var shouldStop bool
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res := arr
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for !shouldStop {
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items, err := inv.TraverseIterator(sessionID, &iter, batchSize)
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if err != nil {
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return nil, err
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}
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res = append(res, items...)
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shouldStop = len(items) < batchSize
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}
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return res, nil
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}
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