mirror of
https://github.com/cgrates/cgrates.git
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87 lines
3.3 KiB
Go
87 lines
3.3 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 engine
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import (
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"github.com/cgrates/cgrates/utils"
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)
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func NewReqFilterIndexer(dataDB DataDB, dbKey string) (*ReqFilterIndexer, error) {
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indexes, err := dataDB.GetReqFilterIndexes(dbKey)
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if err != nil && err != utils.ErrNotFound {
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return nil, err
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}
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if indexes == nil {
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indexes = make(map[string]map[string]utils.StringMap)
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}
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return &ReqFilterIndexer{dataDB: dataDB, dbKey: dbKey,
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indexes: indexes, chngdIndxKeys: make(utils.StringMap)}, nil
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}
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// ReqFilterIndexer is a centralized indexer for all data sources using RequestFilter
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// retrieves and stores it's data from/to dataDB
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// not thread safe, meant to be used as logic within other code blocks
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type ReqFilterIndexer struct {
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indexes map[string]map[string]utils.StringMap // map[fieldName]map[fieldValue]utils.StringMap[resourceID]
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dataDB DataDB
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dbKey string // get/store the result from/into this key
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chngdIndxKeys utils.StringMap // keep record of the changed fieldName:fieldValue pair so we can re-cache wisely
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}
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// ChangedKeys returns the changed keys from original indexes so we can reload wisely
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func (rfi *ReqFilterIndexer) ChangedKeys() utils.StringMap {
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return rfi.chngdIndxKeys
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}
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// IndexFilters parses reqFltrs, adding itemID in the indexes and marks the changed keys in chngdIndxKeys
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func (rfi *ReqFilterIndexer) IndexFilters(itemID string, reqFltrs []*RequestFilter) {
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var hasMetaString bool
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for _, fltr := range reqFltrs {
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if fltr.Type != MetaString {
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continue
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}
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hasMetaString = true // Mark that we found at least one metatring so we don't index globally
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if _, hastIt := rfi.indexes[fltr.FieldName]; !hastIt {
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rfi.indexes[fltr.FieldName] = make(map[string]utils.StringMap)
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}
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for _, fldVal := range fltr.Values {
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if _, hasIt := rfi.indexes[fltr.FieldName][fldVal]; !hasIt {
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rfi.indexes[fltr.FieldName][fldVal] = make(utils.StringMap)
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}
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rfi.indexes[fltr.FieldName][fldVal][itemID] = true
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rfi.chngdIndxKeys[utils.ConcatenatedKey(fltr.FieldName, fldVal)] = true
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}
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}
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if !hasMetaString {
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if _, hasIt := rfi.indexes[utils.NOT_AVAILABLE]; !hasIt {
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rfi.indexes[utils.NOT_AVAILABLE] = make(map[string]utils.StringMap)
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}
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if _, hasIt := rfi.indexes[utils.NOT_AVAILABLE][utils.NOT_AVAILABLE]; !hasIt {
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rfi.indexes[utils.NOT_AVAILABLE][utils.NOT_AVAILABLE] = make(utils.StringMap)
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}
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rfi.indexes[utils.NOT_AVAILABLE][utils.NOT_AVAILABLE][itemID] = true // Fields without real field index will be located in map[NOT_AVAILABLE][NOT_AVAILABLE][rl.ID]
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}
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return
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}
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// StoreIndexes handles storing the indexes to dataDB
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func (rfi *ReqFilterIndexer) StoreIndexes() error {
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return rfi.dataDB.SetReqFilterIndexes(rfi.dbKey, rfi.indexes)
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}
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