func (s *sphinxPools) newConn() (*SphinxDB, error) {
var (
err error
db *sql.DB
o orm.Ormer
)
if db, err = sql.Open("sphinx", "root:root@tcp("+setting.SphinxHost+")/?loc=UTC"); err != nil {
return nil, err
}
if err = db.Ping(); err != nil {
db.Close()
return nil, err
}
db.SetMaxIdleConns(1)
db.SetMaxOpenConns(2)
o, err = orm.NewOrmWithDB("sphinx", "sphinx", db)
if err != nil {
return nil, err
}
sdb := &SphinxDB{
alive: true,
pools: s,
db: db,
orm: o,
}
return sdb, nil
}
func postgresSetup(db *sql.DB) error {
var err error
db.SetMaxIdleConns(4)
db.SetMaxOpenConns(8)
_, err = db.Exec(`CREATE TABLE IF NOT EXISTS Devices (
DeviceID CHAR(63) NOT NULL PRIMARY KEY,
Seen TIMESTAMP NOT NULL
)`)
if err != nil {
return err
}
var tmp string
row := db.QueryRow(`SELECT 'DevicesDeviceIDIndex'::regclass`)
if err = row.Scan(&tmp); err != nil {
_, err = db.Exec(`CREATE INDEX DevicesDeviceIDIndex ON Devices (DeviceID)`)
}
if err != nil {
return err
}
row = db.QueryRow(`SELECT 'DevicesSeenIndex'::regclass`)
if err = row.Scan(&tmp); err != nil {
_, err = db.Exec(`CREATE INDEX DevicesSeenIndex ON Devices (Seen)`)
}
if err != nil {
return err
}
_, err = db.Exec(`CREATE TABLE IF NOT EXISTS Addresses (
DeviceID CHAR(63) NOT NULL,
Seen TIMESTAMP NOT NULL,
Address VARCHAR(2048) NOT NULL
)`)
if err != nil {
return err
}
row = db.QueryRow(`SELECT 'AddressesDeviceIDSeenIndex'::regclass`)
if err = row.Scan(&tmp); err != nil {
_, err = db.Exec(`CREATE INDEX AddressesDeviceIDSeenIndex ON Addresses (DeviceID, Seen)`)
}
if err != nil {
return err
}
row = db.QueryRow(`SELECT 'AddressesDeviceIDAddressIndex'::regclass`)
if err = row.Scan(&tmp); err != nil {
_, err = db.Exec(`CREATE INDEX AddressesDeviceIDAddressIndex ON Addresses (DeviceID, Address)`)
}
if err != nil {
return err
}
return nil
}
// Init must be called once before DB is used.
//
// Since it used glog, make sure it is also called after flag.Parse is called.
func (c *DatabaseConfig) NewVersionedDB() (*VersionedDB, error) {
if err := c.validate(); err != nil {
return nil, err
}
// If there is a connection string then connect to the MySQL server.
// This is for testing only. In production we get the relevant information
// from the metadata server.
var err error
var DB *sql.DB = nil
glog.Infoln("Opening SQL database.")
DB, err = sql.Open(DEFAULT_DRIVER, c.MySQLString())
if err != nil {
return nil, fmt.Errorf("Failed to open connection to SQL server: %v", err)
}
glog.Infoln("Sending Ping.")
if err := DB.Ping(); err != nil {
return nil, fmt.Errorf("Failed to ping SQL server: %v", err)
}
// As outlined in this comment:
// https://github.com/go-sql-driver/mysql/issues/257#issuecomment-48985975
// We can remove this once we have determined it's not necessary.
DB.SetMaxIdleConns(0)
DB.SetMaxOpenConns(200)
result := &VersionedDB{
DB: DB,
migrationSteps: c.MigrationSteps,
}
// Make sure the migration table exists.
if err := result.checkVersionTable(); err != nil {
return nil, fmt.Errorf("Attempt to create version table returned: %v", err)
}
glog.Infoln("Version table OK.")
// Ping the database occasionally to keep the connection fresh.
go func() {
c := time.Tick(1 * time.Minute)
for _ = range c {
if err := result.DB.Ping(); err != nil {
glog.Warningln("Database failed to respond:", err)
}
glog.Infof("db: Successful ping")
}
}()
return result, nil
}
func NewConnection(cfg Config) (*gorp.DbMap, error) {
u, err := url.Parse(cfg.DSN)
if err != nil {
return nil, fmt.Errorf("parse DSN: %v", err)
}
var (
db *sql.DB
dialect gorp.Dialect
)
switch u.Scheme {
case "postgres":
db, err = sql.Open("postgres", cfg.DSN)
if err != nil {
return nil, err
}
db.SetMaxIdleConns(cfg.MaxIdleConnections)
db.SetMaxOpenConns(cfg.MaxOpenConnections)
dialect = gorp.PostgresDialect{}
case "sqlite3":
db, err = sql.Open("sqlite3", u.Host)
if err != nil {
return nil, err
}
if u.Host == ":memory:" {
// NOTE(ericchiang): sqlite3 coordinates concurrent clients through file locks.
// In memory databases do not support concurrent calls. Limit the number of
// open connections to 1.
//
// See: https://www.sqlite.org/faq.html#q5
db.SetMaxOpenConns(1)
}
dialect = gorp.SqliteDialect{}
default:
return nil, errors.New("unrecognized database driver")
}
dbm := gorp.DbMap{Db: db, Dialect: dialect}
for _, t := range tables {
tm := dbm.AddTableWithName(t.model, t.name).SetKeys(t.autoinc, t.pkey...)
for _, unique := range t.unique {
cm := tm.ColMap(unique)
if cm == nil {
return nil, fmt.Errorf("no such column: %q", unique)
}
cm.SetUnique(true)
}
}
return &dbm, nil
}
func InitDB(cfg *Config) (err error) {
if cfg.DBType == "sqlite" {
cfg.DBType = "sqlite3"
}
dsn := cfg.DSN()
if dsn == "" {
return fmt.Errorf("unsupported database: `%s`", cfg.DBType)
}
var raw_db *sql.DB
if raw_db, err = sql.Open(cfg.DBType, dsn); err != nil {
return
}
if cfg.MaxIdleConns > 0 {
raw_db.SetMaxIdleConns(cfg.MaxIdleConns)
}
if cfg.MaxOpenConns > 0 {
raw_db.SetMaxOpenConns(cfg.MaxOpenConns)
}
var dialect gorp.Dialect
switch cfg.DBType {
case "mysql":
dialect = gorp.MySQLDialect{Engine: "InnoDB", Encoding: "UTF-8"}
case "postgres":
dialect = gorp.PostgresDialect{}
case "sqlite3":
dialect = gorp.SqliteDialect{}
}
db = &gorp.DbMap{Db: raw_db, Dialect: dialect}
if cfg.SqlTrace {
db.TraceOn("[db]", logger{})
}
_tableLk.Lock()
_tableFreezed = true
_tableLk.Unlock()
for _, table := range _tables {
name, primary, model := table.Meta()
t := db.AddTableWithName(model, name)
if primary != "" {
t.SetKeys(true, primary)
}
}
return nil
}
func InitMysqlConnPool() error {
var err error
var conn *sql.DB
conn, err = sql.Open("mysql", fmt.Sprintf("%s:%s@tcp(%s)/%s?charset=utf8&parseTime=true&loc=Local",
GlobalConfig.MYSQL_USER, GlobalConfig.MYSQL_PASSWORD, GlobalConfig.MYSQL_ADDR, GlobalConfig.MYSQL_DBNAME))
if err != nil {
return err
}
err = conn.Ping()
if err != nil {
return err
}
conn.SetMaxIdleConns(GlobalConfig.MYSQL_MAX_IDLE_CONN)
conn.SetMaxOpenConns(GlobalConfig.MYSQL_MAX_CONN)
mydb = &db{conn}
return nil
}
func (dbSeq *SequenceDB) Open() (err error) {
var db *sql.DB
db, err = sql.Open("mysql", conf.Conf.SequenceDB.DSN)
if err != nil {
log.Printf("sequence db open error. %v", err)
return err
}
err = db.Ping()
if err != nil {
log.Printf("sequence db ping error. %v", err)
return err
}
db.SetMaxIdleConns(conf.Conf.SequenceDB.MaxIdleConns)
db.SetMaxOpenConns(conf.Conf.SequenceDB.MaxOpenConns)
dbSeq.db = db
return nil
}
func Db() (*sql.DB, error) {
var (
db *sql.DB
err error
)
config, err := BuildFromFile("../config/database.yml")
if err != nil {
log.Fatal(err)
}
db, err = sql.Open("postgres", "user="******" password="******" dbname="+config.DbName+" sslmode=disable")
if err != nil {
return nil, err
}
db.SetMaxIdleConns(10)
db.SetMaxOpenConns(20)
return db, nil
}
func NewDB() *sql.DB {
var db *sql.DB
var e error
dsn := fmt.Sprintf("%s:%s@(%s:%d)/%s",
C.User, C.Pass, C.Host, C.Port, C.DBname)
if db, e = sql.Open(C.Type, dsn); e != nil {
log.Fatal(e)
}
if C.MaxConn > 0 {
db.SetMaxOpenConns(C.MaxConn)
}
if e = db.Ping(); e != nil {
log.Fatal(e)
}
return db
}
func (this *Conns) initSql(host, port, dbname, user, pass string, maxOpenConns, maxIdleConns int) (*sql.DB, error) {
slimSqlLog("Init", "user:"******" pass:"******" host:"+host+" port:"+port+" dbname:"+dbname)
var sqlDB *sql.DB
var err error
sqlDB, err = sql.Open("mysql", user+":"+pass+"@tcp("+host+":"+port+")/"+dbname+"?charset=utf8")
if err != nil {
return nil, err
}
if maxOpenConns > 0 {
sqlDB.SetMaxOpenConns(maxOpenConns)
} else {
sqlDB.SetMaxOpenConns(2000)
}
if maxIdleConns > 0 {
sqlDB.SetMaxIdleConns(maxIdleConns)
} else {
sqlDB.SetMaxIdleConns(1000)
}
err = sqlDB.Ping()
if err != nil {
return nil, err
}
return sqlDB, nil
}
func main() {
flag.Parse()
var db *sql.DB
var err error
var url string
if *usePostgres {
if db, err = sql.Open("postgres", "dbname=postgres sslmode=disable"); err != nil {
log.Fatal(err)
}
} else {
security.SetReadFileFn(securitytest.Asset)
serv := server.StartTestServer(nil)
defer serv.Stop()
url = "https://root@" + serv.ServingAddr() + "?certs=test_certs"
if db, err = sql.Open("cockroach", url); err != nil {
log.Fatal(err)
}
}
if _, err := db.Exec("CREATE DATABASE bank"); err != nil {
if pqErr, ok := err.(*pq.Error); *usePostgres && (!ok || pqErr.Code.Name() != "duplicate_database") {
log.Fatal(err)
}
}
db.Close()
// Open db client with database settings.
if *usePostgres {
if db, err = sql.Open("postgres", "dbname=bank sslmode=disable"); err != nil {
log.Fatal(err)
}
} else {
if db, err = sql.Open("cockroach", url+"&database=bank"); err != nil {
log.Fatal(err)
}
}
// concurrency + 1, for this thread and the "concurrency" number of
// goroutines that move money
db.SetMaxOpenConns(*concurrency + 1)
if _, err = db.Exec("CREATE TABLE IF NOT EXISTS accounts (id BIGINT PRIMARY KEY, balance BIGINT NOT NULL)"); err != nil {
log.Fatal(err)
}
if _, err = db.Exec("TRUNCATE TABLE accounts"); err != nil {
log.Fatal(err)
}
for i := 0; i < *numAccounts; i++ {
if _, err = db.Exec("INSERT INTO accounts (id, balance) VALUES ($1, $2)", i, 1000); err != nil {
log.Fatal(err)
}
}
verifyBank(db)
lastNow := time.Now()
readings := make(chan measurement, 10000)
for i := 0; i < *concurrency; i++ {
go moveMoney(db, readings)
}
for range time.NewTicker(*balanceCheckInterval).C {
now := time.Now()
elapsed := time.Since(lastNow)
lastNow = now
transfers := len(readings)
log.Infof("%d transfers were executed at %.1f/second.", transfers, float64(transfers)/elapsed.Seconds())
if transfers > 0 {
var aggr measurement
for i := 0; i < transfers; i++ {
reading := <-readings
aggr.read += reading.read
aggr.write += reading.write
aggr.total += reading.total
}
d := time.Duration(transfers)
log.Infof("read time: %v, write time: %v, txn time: %v", aggr.read/d, aggr.write/d, aggr.total/d)
}
verifyBank(db)
}
}
func main() {
debugserver.AddFlags(flag.CommandLine)
lagerflags.AddFlags(flag.CommandLine)
etcdFlags := AddETCDFlags(flag.CommandLine)
encryptionFlags := encryption.AddEncryptionFlags(flag.CommandLine)
flag.Parse()
cfhttp.Initialize(*communicationTimeout)
logger, reconfigurableSink := lagerflags.New("bbs")
logger.Info("starting")
initializeDropsonde(logger)
clock := clock.NewClock()
consulClient, err := consuladapter.NewClientFromUrl(*consulCluster)
if err != nil {
logger.Fatal("new-consul-client-failed", err)
}
serviceClient := bbs.NewServiceClient(consulClient, clock)
maintainer := initializeLockMaintainer(logger, serviceClient)
_, portString, err := net.SplitHostPort(*listenAddress)
if err != nil {
logger.Fatal("failed-invalid-listen-address", err)
}
portNum, err := net.LookupPort("tcp", portString)
if err != nil {
logger.Fatal("failed-invalid-listen-port", err)
}
_, portString, err = net.SplitHostPort(*healthAddress)
if err != nil {
logger.Fatal("failed-invalid-health-address", err)
}
_, err = net.LookupPort("tcp", portString)
if err != nil {
logger.Fatal("failed-invalid-health-port", err)
}
registrationRunner := initializeRegistrationRunner(logger, consulClient, portNum, clock)
var activeDB db.DB
var sqlDB *sqldb.SQLDB
var sqlConn *sql.DB
var storeClient etcddb.StoreClient
var etcdDB *etcddb.ETCDDB
key, keys, err := encryptionFlags.Parse()
if err != nil {
logger.Fatal("cannot-setup-encryption", err)
}
keyManager, err := encryption.NewKeyManager(key, keys)
if err != nil {
logger.Fatal("cannot-setup-encryption", err)
}
cryptor := encryption.NewCryptor(keyManager, rand.Reader)
etcdOptions, err := etcdFlags.Validate()
if err != nil {
logger.Fatal("etcd-validation-failed", err)
}
if etcdOptions.IsConfigured {
storeClient = initializeEtcdStoreClient(logger, etcdOptions)
etcdDB = initializeEtcdDB(logger, cryptor, storeClient, serviceClient, *desiredLRPCreationTimeout)
activeDB = etcdDB
}
// If SQL database info is passed in, use SQL instead of ETCD
if *databaseDriver != "" && *databaseConnectionString != "" {
var err error
connectionString := appendSSLConnectionStringParam(logger, *databaseDriver, *databaseConnectionString, *sqlCACertFile)
sqlConn, err = sql.Open(*databaseDriver, connectionString)
if err != nil {
logger.Fatal("failed-to-open-sql", err)
}
defer sqlConn.Close()
sqlConn.SetMaxOpenConns(*maxDatabaseConnections)
sqlConn.SetMaxIdleConns(*maxDatabaseConnections)
err = sqlConn.Ping()
if err != nil {
logger.Fatal("sql-failed-to-connect", err)
}
sqlDB = sqldb.NewSQLDB(sqlConn, *convergenceWorkers, *updateWorkers, format.ENCRYPTED_PROTO, cryptor, guidprovider.DefaultGuidProvider, clock, *databaseDriver)
err = sqlDB.SetIsolationLevel(logger, sqldb.IsolationLevelReadCommitted)
if err != nil {
logger.Fatal("sql-failed-to-set-isolation-level", err)
}
err = sqlDB.CreateConfigurationsTable(logger)
if err != nil {
logger.Fatal("sql-failed-create-configurations-table", err)
}
activeDB = sqlDB
}
if activeDB == nil {
logger.Fatal("no-database-configured", errors.New("no database configured"))
}
encryptor := encryptor.New(logger, activeDB, keyManager, cryptor, clock)
migrationsDone := make(chan struct{})
migrationManager := migration.NewManager(
logger,
etcdDB,
storeClient,
sqlDB,
sqlConn,
cryptor,
migrations.Migrations,
migrationsDone,
clock,
*databaseDriver,
)
desiredHub := events.NewHub()
actualHub := events.NewHub()
repTLSConfig := &rep.TLSConfig{
RequireTLS: *repRequireTLS,
CaCertFile: *repCACert,
CertFile: *repClientCert,
KeyFile: *repClientKey,
ClientCacheSize: *repClientSessionCacheSize,
}
httpClient := cfhttp.NewClient()
repClientFactory, err := rep.NewClientFactory(httpClient, httpClient, repTLSConfig)
if err != nil {
logger.Fatal("new-rep-client-factory-failed", err)
}
auctioneerClient := initializeAuctioneerClient(logger)
exitChan := make(chan struct{})
var accessLogger lager.Logger
if *accessLogPath != "" {
accessLogger = lager.NewLogger("bbs-access")
file, err := os.OpenFile(*accessLogPath, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
logger.Error("invalid-access-log-path", err, lager.Data{"access-log-path": *accessLogPath})
os.Exit(1)
}
accessLogger.RegisterSink(lager.NewWriterSink(file, lager.INFO))
}
var tlsConfig *tls.Config
if *requireSSL {
tlsConfig, err = cfhttp.NewTLSConfig(*certFile, *keyFile, *caFile)
if err != nil {
logger.Fatal("tls-configuration-failed", err)
}
}
cbWorkPool := taskworkpool.New(logger, *taskCallBackWorkers, taskworkpool.HandleCompletedTask, tlsConfig)
handler := handlers.New(
logger,
accessLogger,
*updateWorkers,
*convergenceWorkers,
activeDB,
desiredHub,
actualHub,
cbWorkPool,
serviceClient,
auctioneerClient,
repClientFactory,
migrationsDone,
exitChan,
)
metricsNotifier := metrics.NewPeriodicMetronNotifier(logger)
retirer := controllers.NewActualLRPRetirer(activeDB, actualHub, repClientFactory, serviceClient)
lrpConvergenceController := controllers.NewLRPConvergenceController(logger, activeDB, actualHub, auctioneerClient, serviceClient, retirer, *convergenceWorkers)
taskController := controllers.NewTaskController(activeDB, cbWorkPool, auctioneerClient, serviceClient, repClientFactory)
convergerProcess := converger.New(
logger,
clock,
lrpConvergenceController,
taskController,
serviceClient,
*convergeRepeatInterval,
*kickTaskDuration,
*expirePendingTaskDuration,
*expireCompletedTaskDuration)
var server ifrit.Runner
if tlsConfig != nil {
server = http_server.NewTLSServer(*listenAddress, handler, tlsConfig)
} else {
server = http_server.New(*listenAddress, handler)
}
healthcheckServer := http_server.New(*healthAddress, http.HandlerFunc(healthCheckHandler))
members := grouper.Members{
{"healthcheck", healthcheckServer},
{"lock-maintainer", maintainer},
{"workpool", cbWorkPool},
{"server", server},
{"migration-manager", migrationManager},
{"encryptor", encryptor},
{"hub-maintainer", hubMaintainer(logger, desiredHub, actualHub)},
{"metrics", *metricsNotifier},
{"converger", convergerProcess},
{"registration-runner", registrationRunner},
}
if dbgAddr := debugserver.DebugAddress(flag.CommandLine); dbgAddr != "" {
members = append(grouper.Members{
{"debug-server", debugserver.Runner(dbgAddr, reconfigurableSink)},
}, members...)
}
group := grouper.NewOrdered(os.Interrupt, members)
monitor := ifrit.Invoke(sigmon.New(group))
go func() {
// If a handler writes to this channel, we've hit an unrecoverable error
// and should shut down (cleanly)
<-exitChan
monitor.Signal(os.Interrupt)
}()
logger.Info("started")
err = <-monitor.Wait()
if sqlConn != nil {
sqlConn.Close()
}
if err != nil {
logger.Error("exited-with-failure", err)
os.Exit(1)
}
logger.Info("exited")
}
func main() {
flag.Parse()
var db *sql.DB
var err error
var url string
if *usePostgres {
if db, err = sql.Open("postgres", "dbname=postgres sslmode=disable"); err != nil {
log.Fatal(err)
}
} else {
security.SetReadFileFn(securitytest.Asset)
serv := server.StartTestServer(nil)
defer serv.Stop()
url = "https://root@" + serv.ServingAddr() + "?certs=test_certs"
if db, err = sql.Open("cockroach", url); err != nil {
log.Fatal(err)
}
}
if _, err := db.Exec("CREATE DATABASE bank"); err != nil {
if pqErr, ok := err.(*pq.Error); *usePostgres && (!ok || pqErr.Code.Name() != "duplicate_database") {
log.Fatal(err)
}
}
db.Close()
// Open db client with database settings.
if *usePostgres {
if db, err = sql.Open("postgres", "dbname=bank sslmode=disable"); err != nil {
log.Fatal(err)
}
} else {
if db, err = sql.Open("cockroach", url+"&database=bank"); err != nil {
log.Fatal(err)
}
}
// concurrency + 1, for this thread and the "concurrency" number of
// goroutines that move money
db.SetMaxOpenConns(*concurrency + 1)
if _, err = db.Exec("CREATE TABLE IF NOT EXISTS accounts (id BIGINT PRIMARY KEY, balance BIGINT NOT NULL)"); err != nil {
log.Fatal(err)
}
if _, err = db.Exec("TRUNCATE TABLE accounts"); err != nil {
log.Fatal(err)
}
for i := 0; i < *numAccounts; i++ {
if _, err = db.Exec("INSERT INTO accounts (id, balance) VALUES ($1, $2)", i, 0); err != nil {
log.Fatal(err)
}
}
verifyBank(db)
var lastNumTransfers uint64
lastNow := time.Now()
for i := 0; i < *concurrency; i++ {
go moveMoney(db)
}
for range time.NewTicker(*balanceCheckInterval).C {
now := time.Now()
elapsed := time.Since(lastNow)
numTransfers := atomic.LoadUint64(&numTransfers)
log.Infof("%d transfers were executed at %.1f/second.", (numTransfers - lastNumTransfers), float64(numTransfers-lastNumTransfers)/elapsed.Seconds())
verifyBank(db)
lastNumTransfers = numTransfers
lastNow = now
}
}
func main() {
flag.Usage = usage
flag.Parse()
if flag.NArg() != 1 {
usage()
os.Exit(2)
}
dbURL := flag.Arg(0)
isPostgres := false
var db *sql.DB
var err error
var parsedURL *url.URL
if *dbDriver == "postgres" {
isPostgres = true
} else if *dbDriver != "cockroach" {
log.Fatal("--driver only supports \"cockroach\" and \"postgres\"")
}
if parsedURL, err = url.Parse(dbURL); err != nil {
log.Fatal(err)
}
if isPostgres {
if db, err = sql.Open("postgres", parsedURL.String()); err != nil {
log.Fatal(err)
}
} else {
if db, err = sql.Open("cockroach", parsedURL.String()); err != nil {
log.Fatal(err)
}
}
if _, err := db.Exec("CREATE DATABASE bank"); err != nil {
if pqErr, ok := err.(*pq.Error); isPostgres && (!ok || pqErr.Code.Name() != "duplicate_database") {
log.Fatal(err)
}
}
if err := db.Close(); err != nil {
log.Fatal(err)
}
// Open db client with database settings.
if isPostgres {
q := parsedURL.Query()
q.Set("dbname", "bank")
parsedURL.RawQuery = q.Encode()
if db, err = sql.Open("postgres", parsedURL.String()); err != nil {
log.Fatal(err)
}
} else {
q := parsedURL.Query()
q.Set("database", "bank")
parsedURL.RawQuery = q.Encode()
if db, err = sql.Open("cockroach", parsedURL.String()); err != nil {
log.Fatal(err)
}
}
// concurrency + 1, for this thread and the "concurrency" number of
// goroutines that move money
db.SetMaxOpenConns(*concurrency + 1)
if _, err = db.Exec("CREATE TABLE IF NOT EXISTS accounts (id BIGINT PRIMARY KEY, balance BIGINT NOT NULL)"); err != nil {
log.Fatal(err)
}
if _, err = db.Exec("TRUNCATE TABLE accounts"); err != nil {
log.Fatal(err)
}
for i := 0; i < *numAccounts; i++ {
if _, err = db.Exec("INSERT INTO accounts (id, balance) VALUES ($1, $2)", i, 1000); err != nil {
log.Fatal(err)
}
}
verifyBank(db)
lastNow := time.Now()
readings := make(chan measurement, 10000)
for i := 0; i < *concurrency; i++ {
go moveMoney(db, readings)
}
for range time.NewTicker(*balanceCheckInterval).C {
now := time.Now()
elapsed := time.Since(lastNow)
lastNow = now
transfers := len(readings)
log.Printf("%d transfers were executed at %.1f/second.", transfers, float64(transfers)/elapsed.Seconds())
if transfers > 0 {
var aggr measurement
for i := 0; i < transfers; i++ {
reading := <-readings
aggr.read += reading.read
aggr.write += reading.write
aggr.total += reading.total
}
d := time.Duration(transfers)
log.Printf("read time: %v, write time: %v, txn time: %v", aggr.read/d, aggr.write/d, aggr.total/d)
}
verifyBank(db)
}
}
func (a *Attacker) hit(tr Targeter, tm time.Time) *Result {
var (
res = Result{Timestamp: tm}
tgt Target
err error
)
defer func() {
res.Latency = time.Since(tm)
if err != nil {
res.Error = err.Error()
}
}()
if err = tr(&tgt); err != nil {
return &res
}
req, err := tgt.Query()
if err != nil {
return &res
}
/*
a.cnn, err = sql.Open("mysql", a.dsn)
if err != nil {
res.Code = 500
res.Error = err.Error()
return &res
}
defer a.cnn.Close()
a.cnn.SetMaxIdleConns(a.maxIdleConns)
a.cnn.SetMaxOpenConns(a.maxOpenConns)
*/
//log.Printf("query:%s", req)
var r *sql.Rows
if a.persistent {
r, err = a.cnn.Query(req)
} else {
var cnn *sql.DB
cnn, err = sql.Open("mysql", a.dsn)
cnn.SetMaxIdleConns(0)
cnn.SetMaxOpenConns(1)
cnn.SetConnMaxLifetime(1 * time.Nanosecond)
if err != nil {
res.Code = 500
res.Error = err.Error()
return &res
}
r, err = cnn.Query(req)
}
if err != nil {
// ignore redirect errors when the user set --redirects=NoFollow
if a.redirects == NoFollow && strings.Contains(err.Error(), "stopped after") {
err = nil
}
return &res
}
defer r.Close()
num := 0
for r.Next() {
num++
/*
var id interface{}
if err := r.Scan(&id); err != nil {
res.Code = 501
res.Error = err.Error()
res.Error = fmt.Sprintf("row scan err:%s: query:%s", err.Error(), req)
return &res
}
*/
}
//fmt.Fprintf(os.Stderr, "%d,", num)
res.BytesIn = 0
res.BytesOut = 0
err = r.Err()
if err == nil {
if num == 0 {
res.Code = 201
} else {
res.Code = 200
}
} else {
res.Code = 500
res.Error = fmt.Sprintf("%s: query:%s", err.Error(), req)
}
return &res
}