mirror of
https://github.com/rocky-linux/peridot.git
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139 lines
4.5 KiB
Go
139 lines
4.5 KiB
Go
// The MIT License
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//
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// Copyright (c) 2020 Temporal Technologies Inc. All rights reserved.
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//
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// Copyright (c) 2020 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package internal
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import (
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"errors"
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"fmt"
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"reflect"
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commonpb "go.temporal.io/api/common/v1"
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"go.temporal.io/sdk/converter"
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)
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// encode multiple arguments(arguments to a function).
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func encodeArgs(dc converter.DataConverter, args []interface{}) (*commonpb.Payloads, error) {
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return dc.ToPayloads(args...)
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}
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// decode multiple arguments(arguments to a function).
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func decodeArgs(dc converter.DataConverter, fnType reflect.Type, data *commonpb.Payloads) (result []reflect.Value, err error) {
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r, err := decodeArgsToPointerValues(dc, fnType, data)
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if err != nil {
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return
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}
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for i := 0; i < len(r); i++ {
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result = append(result, reflect.ValueOf(r[i]).Elem())
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}
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return
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}
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func decodeArgsToPointerValues(dc converter.DataConverter, fnType reflect.Type, data *commonpb.Payloads) (result []interface{}, err error) {
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argsLoop:
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for i := 0; i < fnType.NumIn(); i++ {
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argT := fnType.In(i)
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if i == 0 && (isActivityContext(argT) || isWorkflowContext(argT)) {
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continue argsLoop
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}
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arg := reflect.New(argT).Interface()
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result = append(result, arg)
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}
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err = dc.FromPayloads(data, result...)
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if err != nil {
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return
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}
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return
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}
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func decodeArgsToRawValues(dc converter.DataConverter, fnType reflect.Type, data *commonpb.Payloads) ([]interface{}, error) {
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// Build pointers to results
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var pointers []interface{}
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for i := 0; i < fnType.NumIn(); i++ {
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argT := fnType.In(i)
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if i == 0 && (isActivityContext(argT) || isWorkflowContext(argT)) {
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continue
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}
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pointers = append(pointers, reflect.New(argT).Interface())
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}
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// Unmarshal
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if err := dc.FromPayloads(data, pointers...); err != nil {
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return nil, err
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}
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// Convert results back to non-pointer versions
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results := make([]interface{}, len(pointers))
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for i, pointer := range pointers {
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result := reflect.ValueOf(pointer).Elem()
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// Do not set nil pointers
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if result.Kind() != reflect.Ptr || !result.IsNil() {
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results[i] = result.Interface()
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}
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}
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return results, nil
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}
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// encode single value(like return parameter).
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func encodeArg(dc converter.DataConverter, arg interface{}) (*commonpb.Payloads, error) {
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return dc.ToPayloads(arg)
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}
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// decode single value(like return parameter).
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func decodeArg(dc converter.DataConverter, data *commonpb.Payloads, valuePtr interface{}) error {
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return dc.FromPayloads(data, valuePtr)
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}
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func decodeAndAssignValue(dc converter.DataConverter, from interface{}, toValuePtr interface{}) error {
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if toValuePtr == nil {
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return nil
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}
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if rf := reflect.ValueOf(toValuePtr); rf.Type().Kind() != reflect.Ptr {
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return errors.New("value parameter provided is not a pointer")
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}
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if data, ok := from.(*commonpb.Payloads); ok {
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if err := decodeArg(dc, data, toValuePtr); err != nil {
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return err
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}
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} else if fv := reflect.ValueOf(from); fv.IsValid() {
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fromType := fv.Type()
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toType := reflect.TypeOf(toValuePtr).Elem()
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// If the value set was a pointer and is the same type as the wanted result,
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// instead of panicking because it is not a pointer to a pointer, we will
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// just set the pointer
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if fv.Kind() == reflect.Ptr && fromType.Elem() == toType {
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reflect.ValueOf(toValuePtr).Elem().Set(fv.Elem())
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} else {
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assignable := fromType.AssignableTo(toType)
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if !assignable {
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return fmt.Errorf("%s is not assignable to %s", fromType.Name(), toType.Name())
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}
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reflect.ValueOf(toValuePtr).Elem().Set(fv)
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}
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}
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return nil
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}
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