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task.hexencode.go
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task.hexencode.go
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package pipeline
import (
"context"
"encoding/hex"
"fmt"
"github.com/pkg/errors"
"go.uber.org/multierr"
"github.com/smartcontractkit/chainlink/v2/core/logger"
)
// Return types:
//
// string
type HexEncodeTask struct {
BaseTask `mapstructure:",squash"`
Input string `json:"input"`
}
var _ Task = (*HexEncodeTask)(nil)
func (t *HexEncodeTask) Type() TaskType {
return TaskTypeHexEncode
}
func addHexPrefix(val string) string {
if len(val) > 0 {
return "0x" + val
}
return ""
}
func (t *HexEncodeTask) Run(_ context.Context, _ logger.Logger, vars Vars, inputs []Result) (result Result, runInfo RunInfo) {
_, err := CheckInputs(inputs, 0, 1, 0)
if err != nil {
return Result{Error: errors.Wrap(err, "task inputs")}, runInfo
}
var stringInput StringParam
err = multierr.Combine(
errors.Wrap(ResolveParam(&stringInput, From(VarExpr(t.Input, vars), NonemptyString(t.Input), Input(inputs, 0))), "input"),
)
if err == nil {
// string
return Result{Value: addHexPrefix(hex.EncodeToString([]byte(stringInput.String())))}, runInfo
}
var bytesInput BytesParam
err = multierr.Combine(
errors.Wrap(ResolveParam(&bytesInput, From(VarExpr(t.Input, vars), NonemptyString(t.Input), Input(inputs, 0))), "input"),
)
if err == nil {
// bytes
return Result{Value: addHexPrefix(hex.EncodeToString(bytesInput))}, runInfo
}
var decimalInput DecimalParam
err = multierr.Combine(
errors.Wrap(ResolveParam(&decimalInput, From(VarExpr(t.Input, vars), NonemptyString(t.Input), Input(inputs, 0))), "input"),
)
if err == nil && !decimalInput.Decimal().IsInteger() {
// decimal
return Result{Error: errors.New("decimal input")}, runInfo
}
var bigIntInput MaybeBigIntParam
err = multierr.Combine(
errors.Wrap(ResolveParam(&bigIntInput, From(VarExpr(t.Input, vars), NonemptyString(t.Input), Input(inputs, 0))), "input"),
)
if err == nil {
// one of integer types
if bigIntInput.BigInt().Sign() == -1 {
return Result{Error: errors.New("negative integer")}, runInfo
}
return Result{Value: addHexPrefix(fmt.Sprintf("%x", bigIntInput.BigInt()))}, runInfo
}
return Result{Error: err}, runInfo
}