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parties.go
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parties.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/core/types"
vegapb "code.vegaprotocol.io/vega/protos/vega"
)
type partyE interface {
events.Event
Party() vegapb.Party
}
type Parties struct {
*subscribers.Base
ctx context.Context
mu sync.RWMutex
parties map[string]vegapb.Party
ch chan vegapb.Party
}
func NewParties(ctx context.Context) (parties *Parties) {
defer func() {
parties.parties[types.NetworkParty] = vegapb.Party{Id: types.NetworkParty}
go parties.consume()
}()
return &Parties{
Base: subscribers.NewBase(ctx, 1000, true),
ctx: ctx,
parties: map[string]vegapb.Party{},
ch: make(chan vegapb.Party, 100),
}
}
func (a *Parties) consume() {
defer func() { close(a.ch) }()
for {
select {
case <-a.Closed():
return
case party, ok := <-a.ch:
if !ok {
// cleanup base
a.Halt()
// channel is closed
return
}
a.mu.Lock()
a.parties[party.Id] = party
a.mu.Unlock()
}
}
}
func (a *Parties) Push(evts ...events.Event) {
for _, e := range evts {
if ae, ok := e.(partyE); ok {
a.ch <- ae.Party()
}
}
}
func (a *Parties) List() []*vegapb.Party {
a.mu.RLock()
defer a.mu.RUnlock()
out := make([]*vegapb.Party, 0, len(a.parties))
for _, v := range a.parties {
v := v
out = append(out, &v)
}
return out
}
func (a *Parties) Types() []events.Type {
return []events.Type{
events.PartyEvent,
}
}