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https://github.com/cgrates/cgrates.git
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104 lines
4.1 KiB
Go
104 lines
4.1 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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"strings"
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"github.com/cgrates/cgrates/config"
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"github.com/cgrates/cgrates/guardian"
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"github.com/cgrates/cgrates/utils"
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)
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// MatchingItemIDsForEvent returns the list of item IDs matching fieldName/fieldValue for an event
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// fieldIDs limits the fields which are checked against indexes
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// helper on top of dataDB.GetIndexes, adding utils.ANY to list of fields queried
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func MatchingItemIDsForEvent(ev utils.MapStorage, stringFldIDs, prefixFldIDs, suffixFldIDs *[]string,
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dm *DataManager, cacheID, itemIDPrefix string, indexedSelects, nestedFields bool) (itemIDs utils.StringSet, err error) {
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itemIDs = make(utils.StringSet)
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var allFieldIDs []string
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if indexedSelects && (stringFldIDs == nil || prefixFldIDs == nil || suffixFldIDs == nil) {
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allFieldIDs = ev.GetKeys(nestedFields, 2, utils.EmptyString)
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}
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// Guard will protect the function with automatic locking
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lockID := utils.CacheInstanceToPrefix[cacheID] + itemIDPrefix
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guardian.Guardian.Guard(func() (gRes interface{}, gErr error) {
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if !indexedSelects {
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var keysWithID []string
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if keysWithID, err = dm.DataDB().GetKeysForPrefix(utils.CacheIndexesToPrefix[cacheID]); err != nil {
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return
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}
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var sliceIDs []string
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for _, id := range keysWithID {
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sliceIDs = append(sliceIDs, utils.SplitConcatenatedKey(id)[1])
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}
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itemIDs = utils.NewStringSet(sliceIDs)
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return
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}
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stringFieldVals := map[string]string{utils.ANY: utils.ANY} // cache here field string values, start with default one
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filterIndexTypes := []string{utils.MetaString, utils.MetaPrefix, utils.MetaSuffix, utils.MetaNone} // the MetaNone is used for all items that do not have filters
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for i, fieldIDs := range []*[]string{stringFldIDs, prefixFldIDs, suffixFldIDs, {utils.ANY}} { // same routine for both string and prefix filter types
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if fieldIDs == nil {
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fieldIDs = &allFieldIDs
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}
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for _, fldName := range *fieldIDs {
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fieldValIf, err := ev.FieldAsInterface(strings.Split(fldName, utils.NestingSep))
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if err != nil && filterIndexTypes[i] != utils.MetaNone {
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continue
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}
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if _, cached := stringFieldVals[fldName]; !cached {
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stringFieldVals[fldName] = utils.IfaceAsString(fieldValIf)
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}
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fldVal := stringFieldVals[fldName]
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fldVals := []string{fldVal}
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// default is only one fieldValue checked
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if filterIndexTypes[i] == utils.MetaPrefix {
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fldVals = utils.SplitPrefix(fldVal, 1) // all prefixes till last digit
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} else if filterIndexTypes[i] == utils.MetaSuffix {
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fldVals = utils.SplitSuffix(fldVal) // all suffix till first digit
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}
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var dbItemIDs utils.StringSet // list of items matched in DB
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for _, val := range fldVals {
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var dbIndexes map[string]utils.StringSet // list of items matched in DB
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key := utils.ConcatenatedKey(filterIndexTypes[i], fldName, val)
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if dbIndexes, err = dm.GetIndexes(cacheID, itemIDPrefix, key, true, true); err != nil {
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if err == utils.ErrNotFound {
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err = nil
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continue
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}
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return
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}
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dbItemIDs = dbIndexes[key]
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break // we got at least one answer back, longest prefix wins
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}
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for itemID := range dbItemIDs {
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if _, hasIt := itemIDs[itemID]; !hasIt { // Add it to list if not already there
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itemIDs[itemID] = dbItemIDs[itemID]
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}
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}
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}
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}
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return
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}, config.CgrConfig().GeneralCfg().LockingTimeout, lockID)
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if len(itemIDs) == 0 {
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return nil, utils.ErrNotFound
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}
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return
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}
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