//go:build performance

/*
Real-time Online/Offline Charging System (OCS) for Telecom & ISP environments
Copyright (C) ITsysCOM GmbH

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>
*/

package agents

import (
	"bytes"
	"flag"
	"fmt"
	"path/filepath"
	"sync/atomic"
	"testing"
	"time"

	"github.com/cgrates/birpc/context"
	"github.com/cgrates/cgrates/engine"
	"github.com/cgrates/cgrates/utils"
)

var (
	capsLimit    = flag.Int("caps_limit", 0, "caps limit")
	capsStrategy = flag.String("caps_strategy", "*busy", "caps strategy")
	parallelism  = flag.Int("parallelism", 0, "parallelism")
)

func BenchmarkDiameterCaps(b *testing.B) {
	// CoreS config is dynamic for this benchmark.
	jsonCfg := fmt.Sprintf(`{
"cores": {
	"caps": %d,
	"caps_strategy": "%s",

	// use shutdown_timeout option to set the diameter reply timeout.
	"shutdown_timeout": "100ms"
}
}`, *capsLimit, *capsStrategy)

	ng := engine.TestEngine{
		ConfigJSON: jsonCfg,
		ConfigPath: filepath.Join(*utils.DataDir, "conf", "samples", "diambench"),
		TpFiles: map[string]string{
			utils.AccountActionsCsv: `#Tenant,Account,ActionPlanId,ActionTriggersId,AllowNegative,Disabled
cgrates.org,1001,PACKAGE_1001,,,`,
			utils.ActionPlansCsv: `#Id,ActionsId,TimingId,Weight
PACKAGE_1001,ACT_TOPUP,*asap,10`,
			utils.ActionsCsv: `#ActionsId[0],Action[1],ExtraParameters[2],Filter[3],BalanceId[4],BalanceType[5],Categories[6],DestinationIds[7],RatingSubject[8],SharedGroup[9],ExpiryTime[10],TimingIds[11],Units[12],BalanceWeight[13],BalanceBlocker[14],BalanceDisabled[15],Weight[16]
ACT_TOPUP,*topup_reset,,,balance_sms,*sms,,,,,*unlimited,,1000000,,,,`,
			utils.ChargersCsv: `#Tenant,ID,FilterIDs,ActivationInterval,RunID,AttributeIDs,Weight
cgrates.org,DEFAULT,,,*default,*none,0`,
		},
		DBCfg: engine.InternalDBCfg,
	}
	client, cfg := ng.Run(b)

	time.Sleep(10 * time.Millisecond) // wait for DiameterAgent service to start
	diamClient, err := NewDiameterClient(cfg.DiameterAgentCfg().Listen, "localhost",
		cfg.DiameterAgentCfg().OriginRealm, cfg.DiameterAgentCfg().VendorID,
		cfg.DiameterAgentCfg().ProductName, utils.DiameterFirmwareRevision,
		cfg.DiameterAgentCfg().DictionariesPath, cfg.DiameterAgentCfg().ListenNet)
	if err != nil {
		b.Fatal(err)
	}

	// actual benchmark
	var sent, completed atomic.Int64
	b.SetParallelism(*parallelism)
	b.ResetTimer()
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			sent.Add(1)
			if sendDiamCCR(b, diamClient, cfg.CoreSCfg().ShutdownTimeout, "2001") {
				completed.Add(1)
			}
		}
	})

	// check results
	b.Logf("sent %d, completed %d", sent.Load(), completed.Load())
	var acnt *engine.Account
	attrsAcnt := &utils.AttrGetAccount{
		Tenant:  "cgrates.org",
		Account: "1001",
	}
	expBalance := float64(1000000 - completed.Load())
	if err = client.Call(context.Background(), utils.APIerSv2GetAccount, attrsAcnt, &acnt); err != nil {
		b.Errorf("APIerSv1.GetAccount unexpected err: %v", err)
	} else if rply := acnt.BalanceMap[utils.MetaSMS].GetTotalValue(); rply != expBalance {
		b.Errorf("APIerSv1.GetAccount: sms_balance: %f, want: %f", rply, expBalance)
	}
}

func BenchmarkDiameterReplication(b *testing.B) {
	// Setup for storage engine.
	rplNgJSONCfg := `{
"listen": {
	"rpc_json": "127.0.0.1:22012",
	"rpc_gob": "127.0.0.1:22013",
	"http": "127.0.0.1:22080",
},
"data_db": {
	"db_host": "192.168.122.164"
},
"apiers": {
	"enabled": true,
	"scheduler_conns": ["*internal"]
},
"schedulers": {
	"enabled": true
}
}`

	rplNg := engine.TestEngine{
		TpFiles: map[string]string{
			utils.AccountActionsCsv: `#Tenant,Account,ActionPlanId,ActionTriggersId,AllowNegative,Disabled
cgrates.org,1001,PACKAGE_1001,,,`,
			utils.ActionPlansCsv: `#Id,ActionsId,TimingId,Weight
PACKAGE_1001,ACT_TOPUP,*asap,10`,
			utils.ActionsCsv: `#ActionsId[0],Action[1],ExtraParameters[2],Filter[3],BalanceId[4],BalanceType[5],Categories[6],DestinationIds[7],RatingSubject[8],SharedGroup[9],ExpiryTime[10],TimingIds[11],Units[12],BalanceWeight[13],BalanceBlocker[14],BalanceDisabled[15],Weight[16]
ACT_TOPUP,*topup_reset,,,balance_sms,*sms,,,,,*unlimited,,1000000,,,,`,
			utils.ChargersCsv: `#Tenant,ID,FilterIDs,ActivationInterval,RunID,AttributeIDs,Weight
cgrates.org,DEFAULT,*string:~*req.Account:1001,,*default,*none,10
cgrates.org,Raw,,,*raw,*constant:*req.RequestType:*none,0`,
		},
		ConfigJSON: rplNgJSONCfg,
		DBCfg: engine.DBCfg{
			DataDB: &engine.DBParams{
				Host: utils.StringPointer("192.168.122.164"),
			},
			StorDB: engine.InternalDBCfg.StorDB,
		},
		LogBuffer: new(bytes.Buffer),
	}
	// defer fmt.Println(rplNg.LogBuffer)
	rplClient, _ := rplNg.Run(b)

	// Setup for rater.
	rplInterval := 5 * time.Millisecond
	failedDir := b.TempDir()
	jsonCfg := fmt.Sprintf(`{
"data_db": {
	"db_type": "*internal",
	"remote_conns": ["db_conn"],
	"replication_conns": ["db_conn"],
	"replication_filtered": false,
	"replication_cache": "",
	"replication_failed_dir": "%s",
	"replication_interval": "%s",
	"items":{
		"*accounts": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": true},
		"*reverse_destinations": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*destinations": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*rating_plans": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*rating_profiles": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*actions": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*action_plans": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*account_action_plans": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*action_triggers": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*shared_groups": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*timings": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*filters": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*attribute_profiles": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*charger_profiles": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*load_ids": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*versions": {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*attribute_filter_indexes" : {"limit": -1, "ttl": "", "static_ttl": false, "remote": false, "replicate": false},
		"*charger_filter_indexes" : {"limit": -1, "ttl": "", "static_ttl": false, "remote": true, "replicate": false},
		"*reverse_filter_indexes" : {"limit": -1, "ttl": "", "static_ttl": false, "remote": false, "replicate": false},
	}
},
"rpc_conns": {
	"db_conn": {
		"conns": [
			{
				"address": "127.0.0.1:22013",
				"transport":"*gob",
				"connect_attempts": 5,
				"reconnects": 5,
				"max_reconnect_interval": "",
				"connect_timeout":"1s",
				"reply_timeout":"2s"
			}
		]
	}
}
}`, failedDir, rplInterval)

	ng := engine.TestEngine{
		ConfigJSON: jsonCfg,
		ConfigPath: filepath.Join(*utils.DataDir, "conf", "samples", "diambench"),
		LogBuffer:  new(bytes.Buffer),
	}
	// defer fmt.Println(ng.LogBuffer)
	client, cfg := ng.Run(b)

	time.Sleep(50 * time.Millisecond) // wait for DiameterAgent service to start
	diamClient, err := NewDiameterClient(cfg.DiameterAgentCfg().Listen, "localhost",
		cfg.DiameterAgentCfg().OriginRealm, cfg.DiameterAgentCfg().VendorID,
		cfg.DiameterAgentCfg().ProductName, utils.DiameterFirmwareRevision,
		cfg.DiameterAgentCfg().DictionariesPath, cfg.DiameterAgentCfg().ListenNet)
	if err != nil {
		b.Fatal(err)
	}

	// actual benchmark
	var sent, completed atomic.Int64
	b.SetParallelism(*parallelism)
	b.ResetTimer()
	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			sent.Add(1)
			if sendDiamCCR(b, diamClient, 5*time.Second, "2001") {
				completed.Add(1)
			}
		}
	})

	// Wait for last batch of replications to execute.
	time.Sleep(rplInterval)

	// check results
	b.Logf("sent %d, completed %d", sent.Load(), completed.Load())
	var acnt *engine.Account
	attrsAcnt := &utils.AttrGetAccount{
		Tenant:  "cgrates.org",
		Account: "1001",
	}
	expBalance := float64(1000000 - completed.Load())
	if err = client.Call(context.Background(), utils.APIerSv2GetAccount, attrsAcnt, &acnt); err != nil {
		b.Errorf("APIerSv1.GetAccount unexpected err: %v", err)
	} else if rply := acnt.BalanceMap[utils.MetaSMS].GetTotalValue(); rply != expBalance {
		b.Errorf("APIerSv1.GetAccount: sms_balance: %f, want: %f", rply, expBalance)
	}
	if err = rplClient.Call(context.Background(), utils.APIerSv2GetAccount, attrsAcnt, &acnt); err != nil {
		b.Errorf("APIerSv1.GetAccount unexpected err: %v", err)
	} else if rply := acnt.BalanceMap[utils.MetaSMS].GetTotalValue(); rply != expBalance {
		b.Errorf("APIerSv1.GetAccount: sms_balance: %f, want: %f", rply, expBalance)
	}
}
