f155a7f161
Which will be reused by upper-layer packages. It can be extended with more types in future.
44 lines
2 KiB
Go
44 lines
2 KiB
Go
package rpcclient
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import (
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"fmt"
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"github.com/nspcc-dev/neo-go/pkg/config"
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"github.com/nspcc-dev/neo-go/pkg/core/transaction"
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"github.com/nspcc-dev/neo-go/pkg/neorpc/result"
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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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)
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// InvokeAndPackIteratorResults creates a script containing System.Contract.Call
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// of the specified contract with the specified arguments. It assumes that the
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// specified operation will return iterator. The script traverses the resulting
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// iterator, packs all its values into array and pushes the resulting array on
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// stack. Constructed script is invoked via `invokescript` JSON-RPC API using
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// the provided signers. The result of the script invocation contains single array
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// stackitem on stack if invocation HALTed. InvokeAndPackIteratorResults can be
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// used to interact with JSON-RPC server where iterator sessions are disabled to
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// retrieve iterator values via single `invokescript` JSON-RPC call. It returns
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// maxIteratorResultItems items at max which is set to
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// config.DefaultMaxIteratorResultItems by default.
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//
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// Deprecated: please use more convenient and powerful invoker.Invoker interface with
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// CallAndExpandIterator method. This method will be removed in future versions.
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func (c *Client) InvokeAndPackIteratorResults(contract util.Uint160, operation string, params []smartcontract.Parameter, signers []transaction.Signer, maxIteratorResultItems ...int) (*result.Invoke, error) {
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max := config.DefaultMaxIteratorResultItems
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if len(maxIteratorResultItems) != 0 {
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max = maxIteratorResultItems[0]
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}
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values, err := smartcontract.ExpandParameterToEmitable(smartcontract.Parameter{
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Type: smartcontract.ArrayType,
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Value: params,
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})
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if err != nil {
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return nil, fmt.Errorf("expanding params to emitable: %w", err)
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}
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bytes, err := smartcontract.CreateCallAndUnwrapIteratorScript(contract, operation, max, values.([]interface{})...)
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if err != nil {
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return nil, fmt.Errorf("failed to create iterator unwrapper script: %w", err)
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}
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return c.InvokeScript(bytes, signers)
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}
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