mirror of
https://github.com/cgrates/cgrates.git
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95 lines
2.7 KiB
Go
95 lines
2.7 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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"github.com/cgrates/cgrates/utils"
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)
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// NewSliceDP constructs a utils.DataProvider
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func NewSliceDP(record []string, indxAls map[string]int) (dP utils.DataProvider) {
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return &SliceDP{
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req: record,
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cache: utils.MapStorage{utils.Length: len(record)},
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idxAls: indxAls,
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}
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}
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// SliceDP implements engine.utils.DataProvider so we can pass it to filters
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type SliceDP struct {
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req []string
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cache utils.MapStorage
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idxAls map[string]int // aliases for indexes
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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 (cP *SliceDP) String() string {
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return utils.ToJSON(cP.req)
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}
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// FieldAsInterface is part of engine.utils.DataProvider interface
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func (cP *SliceDP) 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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if len(fldPath) != 1 {
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return nil, fmt.Errorf("Invalid fieldPath %+v", fldPath)
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}
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idx := fldPath[0]
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if data, err = cP.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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var cfgFieldIdx int
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if cfgFieldIdx, err = cP.getIndex(idx); err != nil {
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return nil, fmt.Errorf("Ignoring record: %v with error : %+v", cP.req, err)
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}
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if len(cP.req) <= cfgFieldIdx {
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return nil, utils.ErrNotFound
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}
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data = cP.req[cfgFieldIdx]
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cP.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 (cP *SliceDP) FieldAsString(fldPath []string) (data string, err error) {
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var valIface any
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valIface, err = cP.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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// getIndex returns the index from index alias map or if not found try to convert it to int
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func (cP *SliceDP) getIndex(idx string) (fieldIdx int, err error) {
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if cP.idxAls != nil {
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var has bool
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if fieldIdx, has = cP.idxAls[idx]; has {
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return
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}
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}
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return strconv.Atoi(idx)
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}
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