mirror of
https://github.com/cgrates/cgrates.git
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229 lines
7.7 KiB
Go
229 lines
7.7 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 agents
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import (
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"errors"
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"fmt"
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"net/http"
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"time"
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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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"github.com/cgrates/rpcclient"
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)
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// NewHttpAgent will construct a HTTPAgent
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func NewHTTPAgent(
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sessionS rpcclient.RpcClientConnection,
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filterS *engine.FilterS, tenantCfg utils.RSRFields,
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dfltTenant, timezone, reqPayload, rplyPayload string,
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reqProcessors []*config.HttpAgntProcCfg) *HTTPAgent {
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return &HTTPAgent{sessionS: sessionS,
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dfltTenant: dfltTenant, timezone: timezone,
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reqPayload: reqPayload, rplyPayload: rplyPayload,
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reqProcessors: reqProcessors}
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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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sessionS rpcclient.RpcClientConnection
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filterS *engine.FilterS
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tenantCfg utils.RSRFields
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dfltTenant,
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timezone,
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reqPayload,
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rplyPayload string
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reqProcessors []*config.HttpAgntProcCfg
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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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agReq := newAgentRequest(dcdr, ha.tenantCfg, ha.dfltTenant, ha.filterS)
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var processed bool
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for _, reqProcessor := range ha.reqProcessors {
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var lclProcessed bool
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if lclProcessed, err = ha.processRequest(reqProcessor, agReq); lclProcessed {
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processed = lclProcessed
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}
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if err != nil ||
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(lclProcessed && !reqProcessor.ContinueOnSuccess) {
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break
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}
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}
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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(req)))
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return // FixMe with returning some error on HTTP level
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} else if !processed {
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utils.Logger.Warning(
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fmt.Sprintf("<%s> no request processor enabled, ignoring request %s",
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utils.HTTPAgent, utils.ToJSON(req)))
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return // FixMe with returning some error on HTTP level
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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(agReq.Reply); 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(agReq.Reply)))
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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.HttpAgntProcCfg,
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agReq *AgentRequest) (processed bool, err error) {
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if pass, err := ha.filterS.Pass(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 agReq.CGRRequest, err = agReq.AsNavigableMap(reqProcessor.RequestFields); err != nil {
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return
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}
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cgrEv := &utils.CGREvent{
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Tenant: agReq.Tenant,
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ID: utils.UUIDSha1Prefix(),
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Time: utils.TimePointer(time.Now()),
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Event: agReq.CGRRequest.AsMapStringInterface(),
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}
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var reqType string
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for _, typ := range []string{
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utils.MetaDryRun, utils.MetaAuth,
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utils.MetaInitiate, utils.MetaUpdate,
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utils.MetaTerminate, utils.MetaEvent} {
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if reqProcessor.Flags.HasKey(typ) { // request type is identified through flags
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reqType = typ
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}
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}
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switch reqType {
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default:
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return false, errors.New("unknown request type")
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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, HTTP request: %s",
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utils.HTTPAgent, reqProcessor.Id, utils.ToJSON(agReq.Request)))
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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.MetaAuth:
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authArgs := sessions.NewV1AuthorizeArgs(
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reqProcessor.Flags.HasKey(utils.MetaAttributes),
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reqProcessor.Flags.HasKey(utils.MetaResources),
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reqProcessor.Flags.HasKey(utils.MetaAccounts),
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reqProcessor.Flags.HasKey(utils.MetaThresholds),
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reqProcessor.Flags.HasKey(utils.MetaStats),
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reqProcessor.Flags.HasKey(utils.MetaSuppliers),
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reqProcessor.Flags.HasKey(utils.MetaSuppliersIgnoreErrors),
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reqProcessor.Flags.HasKey(utils.MetaSuppliersEventCost),
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*cgrEv)
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var authReply sessions.V1AuthorizeReply
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err = ha.sessionS.Call(utils.SessionSv1AuthorizeEvent,
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authArgs, &authReply)
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if agReq.CGRReply, err = NewCGRReply(&authReply, err); err != nil {
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return
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}
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case utils.MetaInitiate:
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initArgs := sessions.NewV1InitSessionArgs(
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reqProcessor.Flags.HasKey(utils.MetaAttributes),
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reqProcessor.Flags.HasKey(utils.MetaResources),
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reqProcessor.Flags.HasKey(utils.MetaAccounts),
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reqProcessor.Flags.HasKey(utils.MetaThresholds),
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reqProcessor.Flags.HasKey(utils.MetaStats), *cgrEv)
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var initReply sessions.V1InitSessionReply
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err = ha.sessionS.Call(utils.SessionSv1InitiateSession,
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initArgs, &initReply)
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if agReq.CGRReply, err = NewCGRReply(&initReply, err); err != nil {
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return
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}
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case utils.MetaUpdate:
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updateArgs := sessions.NewV1UpdateSessionArgs(
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reqProcessor.Flags.HasKey(utils.MetaAttributes),
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reqProcessor.Flags.HasKey(utils.MetaAccounts), *cgrEv)
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var updateReply sessions.V1UpdateSessionReply
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err = ha.sessionS.Call(utils.SessionSv1UpdateSession,
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updateArgs, &updateReply)
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if agReq.CGRReply, err = NewCGRReply(&updateReply, err); err != nil {
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return
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}
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case utils.MetaTerminate:
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terminateArgs := sessions.NewV1TerminateSessionArgs(
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reqProcessor.Flags.HasKey(utils.MetaAccounts),
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reqProcessor.Flags.HasKey(utils.MetaResources),
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reqProcessor.Flags.HasKey(utils.MetaThresholds),
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reqProcessor.Flags.HasKey(utils.MetaStats), *cgrEv)
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var tRply string
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err = ha.sessionS.Call(utils.SessionSv1TerminateSession,
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terminateArgs, &tRply)
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if agReq.CGRReply, err = NewCGRReply(nil, err); err != nil {
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return
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}
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case utils.MetaEvent:
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evArgs := sessions.NewV1ProcessEventArgs(
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reqProcessor.Flags.HasKey(utils.MetaResources),
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reqProcessor.Flags.HasKey(utils.MetaAccounts),
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reqProcessor.Flags.HasKey(utils.MetaAttributes), *cgrEv)
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var eventRply sessions.V1ProcessEventReply
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err = ha.sessionS.Call(utils.SessionSv1ProcessEvent,
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evArgs, &eventRply)
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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 if eventRply.MaxUsage != nil {
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cgrEv.Event[utils.Usage] = *eventRply.MaxUsage // make sure the CDR reflects the debit
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}
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if agReq.CGRReply, err = NewCGRReply(&eventRply, err); err != nil {
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return
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}
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}
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if reqProcessor.Flags.HasKey(utils.MetaCDRs) &&
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utils.IsSliceMember([]string{utils.MetaTerminate, utils.MetaEvent}, reqType) {
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var rplyCDRs string
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if err = ha.sessionS.Call(utils.SessionSv1ProcessCDR,
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*cgrEv, &rplyCDRs); err != nil {
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agReq.CGRReply.Set([]string{utils.Error}, err.Error(), false)
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}
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}
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if nM, err := agReq.AsNavigableMap(reqProcessor.ReplyFields); err != nil {
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return false, err
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} else {
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agReq.Reply.Merge(nM)
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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
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}
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