Golang parser.NewRegexpCache函数代码示例

// NewExecutor creates an Executor and registers a callback on the
// system config.
func NewExecutor(db client.DB, gossip *gossip.Gossip, leaseMgr *LeaseManager, metaRegistry *metric.Registry, stopper *stop.Stopper) *Executor {
	exec := &Executor{
		db:       db,
		reCache:  parser.NewRegexpCache(512),
		leaseMgr: leaseMgr,

		latency: metaRegistry.Latency("sql.latency"),
	}
	exec.systemConfigCond = sync.NewCond(&exec.systemConfigMu)

	gossipUpdateC := gossip.RegisterSystemConfigChannel()
	stopper.RunWorker(func() {
		for {
			select {
			case <-gossipUpdateC:
				cfg := gossip.GetSystemConfig()
				exec.updateSystemConfig(cfg)
			case <-stopper.ShouldStop():
				return
			}
		}
	})

	return exec
}

// NewExecutor creates an Executor and registers a callback on the
// system config.
func NewExecutor(ctx ExecutorContext, stopper *stop.Stopper, registry *metric.Registry) *Executor {
	exec := &Executor{
		ctx:     ctx,
		reCache: parser.NewRegexpCache(512),

		registry:         registry,
		latency:          registry.Latency("latency"),
		txnBeginCount:    registry.Counter("txn.begin.count"),
		txnCommitCount:   registry.Counter("txn.commit.count"),
		txnAbortCount:    registry.Counter("txn.abort.count"),
		txnRollbackCount: registry.Counter("txn.rollback.count"),
		selectCount:      registry.Counter("select.count"),
		updateCount:      registry.Counter("update.count"),
		insertCount:      registry.Counter("insert.count"),
		deleteCount:      registry.Counter("delete.count"),
		ddlCount:         registry.Counter("ddl.count"),
		miscCount:        registry.Counter("misc.count"),
	}
	exec.systemConfigCond = sync.NewCond(exec.systemConfigMu.RLocker())

	gossipUpdateC := ctx.Gossip.RegisterSystemConfigChannel()
	stopper.RunWorker(func() {
		for {
			select {
			case <-gossipUpdateC:
				cfg, _ := ctx.Gossip.GetSystemConfig()
				exec.updateSystemConfig(cfg)
			case <-stopper.ShouldStop():
				return
			}
		}
	})

	return exec
}

// NewExecutor creates an Executor and registers a callback on the
// system config.
func NewExecutor(db client.DB, gossip *gossip.Gossip, leaseMgr *LeaseManager, stopper *stop.Stopper) *Executor {
	registry := metric.NewRegistry()
	exec := &Executor{
		db:       db,
		reCache:  parser.NewRegexpCache(512),
		leaseMgr: leaseMgr,

		registry:      registry,
		latency:       registry.Latency("latency"),
		txnBeginCount: registry.Counter("transaction.begincount"),
		selectCount:   registry.Counter("select.count"),
		updateCount:   registry.Counter("update.count"),
		insertCount:   registry.Counter("insert.count"),
		deleteCount:   registry.Counter("delete.count"),
		ddlCount:      registry.Counter("ddl.count"),
		miscCount:     registry.Counter("misc.count"),
	}
	exec.systemConfigCond = sync.NewCond(&exec.systemConfigMu)

	gossipUpdateC := gossip.RegisterSystemConfigChannel()
	stopper.RunWorker(func() {
		for {
			select {
			case <-gossipUpdateC:
				cfg := gossip.GetSystemConfig()
				exec.updateSystemConfig(cfg)
			case <-stopper.ShouldStop():
				return
			}
		}
	})

	return exec
}

// NewDistSQLServer instantiates a DistSQLServer.
func NewDistSQLServer(ctx DistSQLServerContext) *DistSQLServerImpl {
	ds := &DistSQLServerImpl{
		ctx:     ctx,
		evalCtx: parser.EvalContext{ReCache: parser.NewRegexpCache(512)},
	}
	return ds
}

// newExecutor creates an Executor and registers a callback on the
// system config.
func newExecutor(db client.DB, gossip *gossip.Gossip, clock *hlc.Clock) *Executor {
	exec := &Executor{
		db:      db,
		reCache: parser.NewRegexpCache(512),
	}
	gossip.RegisterSystemConfigCallback(exec.updateSystemConfig)
	return exec
}

// NewServer instantiates a DistSQLServer.
func NewServer(ctx ServerContext) *ServerImpl {
	ds := &ServerImpl{
		ctx: ctx,
		evalCtx: parser.EvalContext{
			ReCache: parser.NewRegexpCache(512),
		},
	}
	return ds
}

// newExecutor creates an Executor and registers a callback on the
// system config.
func newExecutor(db client.DB, gossip *gossip.Gossip, leaseMgr *LeaseManager) *Executor {
	exec := &Executor{
		db:       db,
		reCache:  parser.NewRegexpCache(512),
		leaseMgr: leaseMgr,
	}
	exec.systemConfigCond = sync.NewCond(&exec.systemConfigMu)
	gossip.RegisterSystemConfigCallback(exec.updateSystemConfig)
	return exec
}

// NewServer instantiates a DistSQLServer.
func NewServer(cfg ServerConfig) *ServerImpl {
	ds := &ServerImpl{
		ServerConfig: cfg,
		evalCtx: parser.EvalContext{
			ReCache: parser.NewRegexpCache(512),
		},
		flowRegistry: makeFlowRegistry(),
	}
	return ds
}

// NewExecutor creates an Executor and registers a callback on the
// system config.
func NewExecutor(ctx ExecutorContext, stopper *stop.Stopper, registry *metric.Registry) *Executor {
	exec := &Executor{
		ctx:     ctx,
		reCache: parser.NewRegexpCache(512),

		registry:         registry,
		latency:          registry.Latency(MetricLatencyName),
		txnBeginCount:    registry.Counter(MetricTxnBeginName),
		txnCommitCount:   registry.Counter(MetricTxnCommitName),
		txnAbortCount:    registry.Counter(MetricTxnAbortName),
		txnRollbackCount: registry.Counter(MetricTxnRollbackName),
		selectCount:      registry.Counter(MetricSelectName),
		updateCount:      registry.Counter(MetricUpdateName),
		insertCount:      registry.Counter(MetricInsertName),
		deleteCount:      registry.Counter(MetricDeleteName),
		ddlCount:         registry.Counter(MetricDdlName),
		miscCount:        registry.Counter(MetricMiscName),
		queryCount:       registry.Counter(MetricQueryName),
	}
	exec.systemConfigCond = sync.NewCond(exec.systemConfigMu.RLocker())

	gossipUpdateC := ctx.Gossip.RegisterSystemConfigChannel()
	stopper.RunWorker(func() {
		for {
			select {
			case <-gossipUpdateC:
				cfg, _ := ctx.Gossip.GetSystemConfig()
				exec.updateSystemConfig(cfg)
			case <-stopper.ShouldStop():
				return
			}
		}
	})

	return exec
}

// NewExecutor creates an Executor and registers a callback on the
// system config.
func NewExecutor(cfg ExecutorConfig, stopper *stop.Stopper) *Executor {
	exec := &Executor{
		cfg:     cfg,
		reCache: parser.NewRegexpCache(512),

		Latency:          metric.NewLatency(MetaLatency),
		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
			}
		}
	})

	return exec
}