mirror of
https://github.com/cgrates/cgrates.git
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99 lines
3.5 KiB
Go
99 lines
3.5 KiB
Go
/*
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Real-time Charging System for Telecom & ISP environments
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Copyright (C) 2012-2015 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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"github.com/cgrates/cgrates/config"
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"github.com/cgrates/cgrates/utils"
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"github.com/cgrates/rpcclient"
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"github.com/fiorix/go-diameter/diam"
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"github.com/fiorix/go-diameter/diam/datatype"
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"github.com/fiorix/go-diameter/diam/sm"
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)
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func NewDiameterAgent(cgrCfg *config.CGRConfig, smg *rpcclient.RpcClient) (*DiameterAgent, error) {
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da := &DiameterAgent{cgrCfg: cgrCfg, smg: smg}
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dictsDir := cgrCfg.DiameterAgentCfg().DictionariesDir
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if len(dictsDir) != 0 {
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if err := loadDictionaries(dictsDir, "DiameterAgent"); err != nil {
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return nil, err
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}
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}
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return da, nil
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}
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type DiameterAgent struct {
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cgrCfg *config.CGRConfig
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smg *rpcclient.RpcClient // Connection towards CGR-SMG component
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}
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// Creates the message handlers
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func (self *DiameterAgent) handlers() diam.Handler {
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settings := &sm.Settings{
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OriginHost: datatype.DiameterIdentity(self.cgrCfg.DiameterAgentCfg().OriginHost),
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OriginRealm: datatype.DiameterIdentity(self.cgrCfg.DiameterAgentCfg().OriginRealm),
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VendorID: datatype.Unsigned32(self.cgrCfg.DiameterAgentCfg().VendorId),
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ProductName: datatype.UTF8String(self.cgrCfg.DiameterAgentCfg().ProductName),
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FirmwareRevision: datatype.Unsigned32(utils.DIAMETER_FIRMWARE_REVISION),
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}
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dSM := sm.New(settings)
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dSM.HandleFunc("CCR", self.handleCCR)
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dSM.HandleFunc("ALL", self.handleALL)
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go func() {
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for err := range dSM.ErrorReports() {
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utils.Logger.Err(fmt.Sprintf("<DiameterAgent> StateMachine error: %+v", err))
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}
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}()
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return dSM
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}
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func (self *DiameterAgent) handleCCR(c diam.Conn, m *diam.Message) {
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//utils.Logger.Warning(fmt.Sprintf("<DiameterAgent> Received CCR message from %s:\n%s", c.RemoteAddr(), m))
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var ccr CCR
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if err := m.Unmarshal(&ccr); err != nil {
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utils.Logger.Err(fmt.Sprintf("<DiameterAgent> Unmarshaling message: %s, error: %s", m, err))
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return
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}
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ccr.diamMessage = m // Save it for later searches inside AVPs
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//utils.Logger.Debug(fmt.Sprintf("CCR unrmashaled: %+v", ccr))
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cca := NewCCAFromCCR(&ccr)
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cca.OriginHost = self.cgrCfg.DiameterAgentCfg().OriginHost
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cca.OriginRealm = self.cgrCfg.DiameterAgentCfg().OriginRealm
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cca.GrantedServiceUnit.CCTime = 300
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cca.ResultCode = diam.Success
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if dmtA, err := cca.AsDiameterMessage(); err != nil {
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utils.Logger.Err(fmt.Sprintf("<DiameterAgent> Failed to convert cca as diameter message, error: %s", err.Error()))
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return
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} else if _, err := dmtA.WriteTo(c); err != nil {
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utils.Logger.Err(fmt.Sprintf("<DiameterAgent> Failed to write message to %s: %s\n%s\n", c.RemoteAddr(), err, dmtA))
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return
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}
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}
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func (self *DiameterAgent) handleALL(c diam.Conn, m *diam.Message) {
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utils.Logger.Warning(fmt.Sprintf("<DiameterAgent> Received unexpected message from %s:\n%s", c.RemoteAddr(), m))
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}
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func (self *DiameterAgent) ListenAndServe() error {
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return diam.ListenAndServe(self.cgrCfg.DiameterAgentCfg().Listen, self.handlers(), nil)
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}
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