// NewServer instantiates a DistSQLServer.
func NewServer(cfg ServerConfig) *ServerImpl {
ds := &ServerImpl{
ServerConfig: cfg,
evalCtx: parser.EvalContext{
ReCache: parser.NewRegexpCache(512),
},
flowRegistry: makeFlowRegistry(),
}
return ds
}
// NewServer instantiates a DistSQLServer.
func NewServer(cfg ServerConfig) *ServerImpl {
ds := &ServerImpl{
ServerConfig: cfg,
evalCtx: parser.EvalContext{
ReCache: parser.NewRegexpCache(512),
},
flowRegistry: makeFlowRegistry(),
flowScheduler: newFlowScheduler(cfg.AmbientContext, cfg.Stopper),
}
return ds
}
// NewExecutor creates an Executor and registers a callback on the
// system config.
func NewExecutor(
cfg ExecutorConfig, stopper *stop.Stopper, startupMemMetrics *MemoryMetrics,
) *Executor {
exec := &Executor{
cfg: cfg,
reCache: parser.NewRegexpCache(512),
Latency: metric.NewLatency(MetaLatency, cfg.MetricsSampleInterval),
TxnBeginCount: metric.NewCounter(MetaTxnBegin),
TxnCommitCount: metric.NewCounter(MetaTxnCommit),
TxnAbortCount: metric.NewCounter(MetaTxnAbort),
TxnRollbackCount: metric.NewCounter(MetaTxnRollback),
SelectCount: metric.NewCounter(MetaSelect),
UpdateCount: metric.NewCounter(MetaUpdate),
InsertCount: metric.NewCounter(MetaInsert),
DeleteCount: metric.NewCounter(MetaDelete),
DdlCount: metric.NewCounter(MetaDdl),
MiscCount: metric.NewCounter(MetaMisc),
QueryCount: metric.NewCounter(MetaQuery),
}
exec.systemConfigCond = sync.NewCond(exec.systemConfigMu.RLocker())
gossipUpdateC := cfg.Gossip.RegisterSystemConfigChannel()
stopper.RunWorker(func() {
for {
select {
case <-gossipUpdateC:
sysCfg, _ := cfg.Gossip.GetSystemConfig()
exec.updateSystemConfig(sysCfg)
case <-stopper.ShouldStop():
return
}
}
})
ctx := log.WithLogTag(context.Background(), "startup", nil)
startupSession := NewSession(ctx, SessionArgs{}, exec, nil, startupMemMetrics)
if err := exec.virtualSchemas.init(&startupSession.planner); err != nil {
log.Fatal(ctx, err)
}
startupSession.Finish(exec)
return exec
}