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netlimits.go
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netlimits.go
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// Copyright (C) 2023 Gobalsky Labs Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package services
import (
"context"
"sync"
"code.vegaprotocol.io/vega/core/events"
"code.vegaprotocol.io/vega/core/subscribers"
"code.vegaprotocol.io/vega/protos/vega"
"google.golang.org/protobuf/proto"
)
type netLimitsEvent interface {
events.Event
NetworkLimits() *vega.NetworkLimits
}
type NetLimits struct {
*subscribers.Base
ctx context.Context
limits vega.NetworkLimits
ch chan vega.NetworkLimits
mu sync.RWMutex
}
func NewNetLimits(ctx context.Context) (netLimits *NetLimits) {
defer func() { go netLimits.consume() }()
return &NetLimits{
Base: subscribers.NewBase(ctx, 1000, true),
ctx: ctx,
ch: make(chan vega.NetworkLimits, 100),
}
}
func (n *NetLimits) consume() {
defer func() { close(n.ch) }()
for {
select {
case <-n.Closed():
return
case limits, ok := <-n.ch:
if !ok {
n.Halt()
return
}
n.mu.Lock()
n.limits = limits
n.mu.Unlock()
}
}
}
func (n *NetLimits) Get() *vega.NetworkLimits {
n.mu.RLock()
defer n.mu.RUnlock()
return proto.Clone(&n.limits).(*vega.NetworkLimits)
}
func (n *NetLimits) Push(evts ...events.Event) {
for _, e := range evts {
if ne, ok := e.(netLimitsEvent); ok {
n.ch <- *ne.NetworkLimits()
}
}
}
func (n *NetLimits) Types() []events.Type {
return []events.Type{events.NetworkLimitsEvent}
}