mirror of
https://github.com/cgrates/cgrates.git
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281 lines
11 KiB
Go
281 lines
11 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 agents
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import (
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"fmt"
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"net/http"
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"github.com/cgrates/birpc/context"
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"github.com/cgrates/cgrates/config"
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"github.com/cgrates/cgrates/engine"
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"github.com/cgrates/cgrates/sessions"
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"github.com/cgrates/cgrates/utils"
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)
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// NewHttpAgent will construct a HTTPAgent
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func NewHTTPAgent(connMgr *engine.ConnManager, sessionConns []string,
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filterS *engine.FilterS, dfltTenant, reqPayload, rplyPayload string,
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reqProcessors []*config.RequestProcessor) *HTTPAgent {
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return &HTTPAgent{
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connMgr: connMgr,
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filterS: filterS,
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dfltTenant: dfltTenant,
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reqPayload: reqPayload,
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rplyPayload: rplyPayload,
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reqProcessors: reqProcessors,
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sessionConns: sessionConns,
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}
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}
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// HTTPAgent is a handler for HTTP requests
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type HTTPAgent struct {
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connMgr *engine.ConnManager
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filterS *engine.FilterS
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dfltTenant string
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reqPayload string
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rplyPayload string
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reqProcessors []*config.RequestProcessor
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sessionConns []string
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}
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// ServeHTTP implements http.Handler interface
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func (ha *HTTPAgent) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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dcdr, err := newHADataProvider(ha.reqPayload, req) // dcdr will provide information from request
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if err != nil {
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utils.Logger.Warning(
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fmt.Sprintf("<%s> error creating decoder: %s",
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utils.HTTPAgent, err.Error()))
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return
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}
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cgrRplyNM := &utils.DataNode{Type: utils.NMMapType, Map: make(map[string]*utils.DataNode)}
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rplyNM := utils.NewOrderedNavigableMap()
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opts := utils.MapStorage{}
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reqVars := &utils.DataNode{Type: utils.NMMapType, Map: map[string]*utils.DataNode{utils.RemoteHost: utils.NewLeafNode(req.RemoteAddr)}}
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for _, reqProcessor := range ha.reqProcessors {
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agReq := NewAgentRequest(dcdr, reqVars, cgrRplyNM, rplyNM,
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opts, reqProcessor.Tenant, ha.dfltTenant,
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utils.FirstNonEmpty(reqProcessor.Timezone,
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config.CgrConfig().GeneralCfg().DefaultTimezone),
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ha.filterS, nil, nil)
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lclProcessed, err := ha.processRequest(reqProcessor, agReq)
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if err != nil {
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utils.Logger.Warning(
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fmt.Sprintf("<%s> error: %s processing request: %s",
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utils.HTTPAgent, err.Error(), utils.ToJSON(agReq)))
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return // FixMe with returning some error on HTTP level
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}
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if !lclProcessed {
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continue
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}
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if lclProcessed && !reqProcessor.Flags.GetBool(utils.MetaContinue) {
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break
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}
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}
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encdr, err := newHAReplyEncoder(ha.rplyPayload, w)
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if err != nil {
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utils.Logger.Warning(
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fmt.Sprintf("<%s> error creating reply encoder: %s",
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utils.HTTPAgent, err.Error()))
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return
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}
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if err = encdr.Encode(rplyNM); err != nil {
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utils.Logger.Warning(
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fmt.Sprintf("<%s> error: %s encoding out %s",
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utils.HTTPAgent, err.Error(), utils.ToJSON(rplyNM)))
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return
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}
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}
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// processRequest represents one processor processing the request
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func (ha *HTTPAgent) processRequest(reqProcessor *config.RequestProcessor,
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agReq *AgentRequest) (processed bool, err error) {
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if pass, err := ha.filterS.Pass(context.TODO(), agReq.Tenant,
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reqProcessor.Filters, agReq); err != nil || !pass {
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return pass, err
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}
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if err = agReq.SetFields(reqProcessor.RequestFields); err != nil {
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return
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}
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cgrEv := utils.NMAsCGREvent(agReq.CGRRequest, agReq.Tenant, utils.NestingSep, agReq.Opts)
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var reqType string
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for _, typ := range []string{
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utils.MetaDryRun, utils.MetaAuthorize,
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utils.MetaInitiate, utils.MetaUpdate,
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utils.MetaTerminate, utils.MetaMessage,
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utils.MetaCDRs, utils.MetaEvent, utils.MetaEmpty} {
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if reqProcessor.Flags.Has(typ) { // request type is identified through flags
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reqType = typ
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break
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}
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}
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var cgrArgs utils.Paginator
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if reqType == utils.MetaAuthorize ||
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reqType == utils.MetaMessage ||
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reqType == utils.MetaEvent {
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if cgrArgs, err = utils.GetRoutePaginatorFromOpts(cgrEv.APIOpts); err != nil {
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utils.Logger.Warning(fmt.Sprintf("<%s> args extraction failed because <%s>",
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utils.HTTPAgent, err.Error()))
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err = nil // reset the error and continue the processing
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}
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}
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if reqProcessor.Flags.Has(utils.MetaLog) {
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utils.Logger.Info(
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fmt.Sprintf("<%s> LOG, processorID: %s, http message: %s",
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utils.HTTPAgent, reqProcessor.ID, agReq.Request.String()))
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}
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switch reqType {
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default:
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return false, fmt.Errorf("unknown request type: <%s>", reqType)
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case utils.MetaNone: // do nothing on CGRateS side
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case utils.MetaDryRun:
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utils.Logger.Info(
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fmt.Sprintf("<%s> DRY_RUN, processorID: %s, CGREvent: %s",
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utils.HTTPAgent, reqProcessor.ID, utils.ToJSON(cgrEv)))
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case utils.MetaAuthorize:
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authArgs := sessions.NewV1AuthorizeArgs(
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reqProcessor.Flags.GetBool(utils.MetaAttributes),
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reqProcessor.Flags.ParamsSlice(utils.MetaAttributes, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaThresholds),
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reqProcessor.Flags.ParamsSlice(utils.MetaThresholds, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaStats),
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reqProcessor.Flags.ParamsSlice(utils.MetaStats, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaResources),
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reqProcessor.Flags.Has(utils.MetaAccounts),
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reqProcessor.Flags.GetBool(utils.MetaRoutes),
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reqProcessor.Flags.Has(utils.MetaRoutesIgnoreErrors),
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reqProcessor.Flags.Has(utils.MetaRoutesEventCost),
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cgrEv, cgrArgs, reqProcessor.Flags.Has(utils.MetaFD),
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reqProcessor.Flags.ParamValue(utils.MetaRoutesMaxCost),
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)
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rply := new(sessions.V1AuthorizeReply)
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err = ha.connMgr.Call(context.TODO(), ha.sessionConns, utils.SessionSv1AuthorizeEvent,
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authArgs, rply)
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rply.SetMaxUsageNeeded(authArgs.GetMaxUsage)
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agReq.setCGRReply(rply, err)
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case utils.MetaInitiate:
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initArgs := sessions.NewV1InitSessionArgs(
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reqProcessor.Flags.GetBool(utils.MetaAttributes),
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reqProcessor.Flags.ParamsSlice(utils.MetaAttributes, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaThresholds),
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reqProcessor.Flags.ParamsSlice(utils.MetaThresholds, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaStats),
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reqProcessor.Flags.ParamsSlice(utils.MetaStats, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaResources),
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reqProcessor.Flags.Has(utils.MetaAccounts),
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cgrEv, reqProcessor.Flags.Has(utils.MetaFD))
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rply := new(sessions.V1InitSessionReply)
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err = ha.connMgr.Call(context.TODO(), ha.sessionConns, utils.SessionSv1InitiateSession,
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initArgs, rply)
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rply.SetMaxUsageNeeded(initArgs.InitSession)
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agReq.setCGRReply(rply, err)
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case utils.MetaUpdate:
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updateArgs := sessions.NewV1UpdateSessionArgs(
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reqProcessor.Flags.GetBool(utils.MetaAttributes),
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reqProcessor.Flags.ParamsSlice(utils.MetaAttributes, utils.MetaIDs),
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reqProcessor.Flags.Has(utils.MetaAccounts),
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cgrEv, reqProcessor.Flags.Has(utils.MetaFD))
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rply := new(sessions.V1UpdateSessionReply)
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err = ha.connMgr.Call(context.TODO(), ha.sessionConns, utils.SessionSv1UpdateSession,
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updateArgs, rply)
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rply.SetMaxUsageNeeded(updateArgs.UpdateSession)
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agReq.setCGRReply(rply, err)
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case utils.MetaTerminate:
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terminateArgs := sessions.NewV1TerminateSessionArgs(
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reqProcessor.Flags.Has(utils.MetaAccounts),
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reqProcessor.Flags.GetBool(utils.MetaResources),
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reqProcessor.Flags.GetBool(utils.MetaThresholds),
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reqProcessor.Flags.ParamsSlice(utils.MetaThresholds, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaStats),
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reqProcessor.Flags.ParamsSlice(utils.MetaStats, utils.MetaIDs),
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cgrEv, reqProcessor.Flags.Has(utils.MetaFD))
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var rply string
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err = ha.connMgr.Call(context.TODO(), ha.sessionConns, utils.SessionSv1TerminateSession,
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terminateArgs, &rply)
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agReq.setCGRReply(nil, err)
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case utils.MetaMessage:
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evArgs := sessions.NewV1ProcessMessageArgs(
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reqProcessor.Flags.GetBool(utils.MetaAttributes),
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reqProcessor.Flags.ParamsSlice(utils.MetaAttributes, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaThresholds),
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reqProcessor.Flags.ParamsSlice(utils.MetaThresholds, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaStats),
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reqProcessor.Flags.ParamsSlice(utils.MetaStats, utils.MetaIDs),
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reqProcessor.Flags.GetBool(utils.MetaResources),
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reqProcessor.Flags.Has(utils.MetaAccounts),
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reqProcessor.Flags.GetBool(utils.MetaRoutes),
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reqProcessor.Flags.Has(utils.MetaRoutesIgnoreErrors),
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reqProcessor.Flags.Has(utils.MetaRoutesEventCost),
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cgrEv, cgrArgs, reqProcessor.Flags.Has(utils.MetaFD),
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reqProcessor.Flags.ParamValue(utils.MetaRoutesMaxCost),
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)
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rply := new(sessions.V1ProcessMessageReply)
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err = ha.connMgr.Call(context.TODO(), ha.sessionConns, utils.SessionSv1ProcessMessage,
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evArgs, rply)
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// if utils.ErrHasPrefix(err, utils.RalsErrorPrfx) {
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// cgrEv.Event[utils.Usage] = 0 // avoid further debits
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// } else
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if evArgs.Debit {
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cgrEv.Event[utils.Usage] = rply.MaxUsage // make sure the CDR reflects the debit
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}
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rply.SetMaxUsageNeeded(evArgs.Debit)
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agReq.setCGRReply(nil, err)
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case utils.MetaEvent:
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evArgs := &sessions.V1ProcessEventArgs{
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Flags: reqProcessor.Flags.SliceFlags(),
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CGREvent: cgrEv,
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Paginator: cgrArgs,
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}
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rply := new(sessions.V1ProcessEventReply)
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err = ha.connMgr.Call(context.TODO(), ha.sessionConns, utils.SessionSv1ProcessEvent,
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evArgs, rply)
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// if utils.ErrHasPrefix(err, utils.RalsErrorPrfx) {
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// cgrEv.Event[utils.Usage] = 0 // avoid further debits
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// } else
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// if needsMaxUsage(reqProcessor.Flags[utils.MetaRALs]) {
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// cgrEv.Event[utils.Usage] = rply.MaxUsage // make sure the CDR reflects the debit
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// }
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agReq.setCGRReply(rply, err)
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case utils.MetaCDRs: // allow CDR processing
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}
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// separate request so we can capture the Terminate/Event also here
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if reqProcessor.Flags.GetBool(utils.MetaCDRs) &&
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!reqProcessor.Flags.Has(utils.MetaDryRun) {
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var rplyCDRs string
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if err = ha.connMgr.Call(context.TODO(), ha.sessionConns, utils.SessionSv1ProcessCDR,
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cgrEv, &rplyCDRs); err != nil {
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agReq.CGRReply.Map[utils.Error] = utils.NewLeafNode(err.Error())
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}
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}
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if err := agReq.SetFields(reqProcessor.ReplyFields); err != nil {
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return false, err
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}
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if reqProcessor.Flags.Has(utils.MetaLog) {
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utils.Logger.Info(
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fmt.Sprintf("<%s> LOG, HTTP reply: %s",
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utils.HTTPAgent, agReq.Reply))
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}
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if reqType == utils.MetaDryRun {
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utils.Logger.Info(
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fmt.Sprintf("<%s> DRY_RUN, HTTP reply: %s",
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utils.HTTPAgent, agReq.Reply))
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}
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return true, nil
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}
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