mirror of
https://github.com/cgrates/cgrates.git
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93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
/*
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Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
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Copyright (C) ITsysCOM GmbH
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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package config
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import (
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"fmt"
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"strconv"
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"strings"
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"github.com/cgrates/cgrates/utils"
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)
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// NewFWVProvider constructs a utils.DataProvider
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func NewFWVProvider(record string) (dP utils.DataProvider) {
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dP = &FWVProvider{
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req: record,
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cache: utils.MapStorage{},
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}
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return
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}
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// FWVProvider implements engine.utils.DataProvider so we can pass it to filters
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type FWVProvider struct {
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req string
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cache utils.MapStorage
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}
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// String is part of engine.utils.DataProvider interface
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// when called, it will display the already parsed values out of cache
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func (fP *FWVProvider) String() string {
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return utils.ToJSON(fP.req)
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}
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// FieldAsInterface is part of engine.utils.DataProvider interface
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func (fP *FWVProvider) FieldAsInterface(fldPath []string) (data any, err error) {
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if len(fldPath) == 0 {
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return
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}
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fwvIdx := fldPath[0]
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if data, err = fP.cache.FieldAsInterface(fldPath); err == nil ||
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err != utils.ErrNotFound { // item found in cache
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return
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}
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err = nil // cancel previous err
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indexes := strings.Split(fwvIdx, "-")
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if len(indexes) != 2 {
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return "", fmt.Errorf("Invalid format for index : %+v", fldPath)
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}
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startIndex, err := strconv.Atoi(indexes[0])
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if err != nil {
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return nil, err
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}
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if startIndex > len(fP.req) {
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return "", fmt.Errorf("StartIndex : %+v is greater than : %+v", startIndex, len(fP.req))
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}
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finalIndex, err := strconv.Atoi(indexes[1])
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if err != nil {
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return nil, err
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}
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if finalIndex > len(fP.req) {
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return "", fmt.Errorf("FinalIndex : %+v is greater than : %+v", finalIndex, len(fP.req))
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}
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data = fP.req[startIndex:finalIndex]
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fP.cache.Set(fldPath, data)
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return
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}
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// FieldAsString is part of engine.utils.DataProvider interface
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func (fP *FWVProvider) FieldAsString(fldPath []string) (data string, err error) {
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var valIface any
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valIface, err = fP.FieldAsInterface(fldPath)
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if err != nil {
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return
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}
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return utils.IfaceAsString(valIface), nil
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}
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