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package proxy
import (
. "github.com/tendermint/go-common"
cfg "github.com/tendermint/go-config"
)
//-----------------------------
// Tendermint's interface to the application consists of multiple connections
type AppConns interface {
Service
Mempool() AppConnMempool
Consensus() AppConnConsensus
Query() AppConnQuery
}
func NewAppConns(config cfg.Config, clientCreator ClientCreator, handshaker Handshaker) AppConns {
return NewMultiAppConn(config, clientCreator, handshaker)
}
//-----------------------------
// multiAppConn implements AppConns
type Handshaker interface {
Handshake(AppConns) error
}
// a multiAppConn is made of a few appConns (mempool, consensus, query)
// and manages their underlying tmsp clients, including the handshake
// which ensures the app and tendermint are synced.
// TODO: on app restart, clients must reboot together
type multiAppConn struct {
BaseService
config cfg.Config
handshaker Handshaker
mempoolConn *appConnMempool
consensusConn *appConnConsensus
queryConn *appConnQuery
clientCreator ClientCreator
}
// Make all necessary tmsp connections to the application
func NewMultiAppConn(config cfg.Config, clientCreator ClientCreator, handshaker Handshaker) *multiAppConn {
multiAppConn := &multiAppConn{
config: config,
handshaker: handshaker,
clientCreator: clientCreator,
}
multiAppConn.BaseService = *NewBaseService(log, "multiAppConn", multiAppConn)
return multiAppConn
}
// Returns the mempool connection
func (app *multiAppConn) Mempool() AppConnMempool {
return app.mempoolConn
}
// Returns the consensus Connection
func (app *multiAppConn) Consensus() AppConnConsensus {
return app.consensusConn
}
// Returns the query Connection
func (app *multiAppConn) Query() AppConnQuery {
return app.queryConn
}
func (app *multiAppConn) OnStart() error {
app.BaseService.OnStart()
// query connection
querycli, err := app.clientCreator.NewTMSPClient()
if err != nil {
return err
}
app.queryConn = NewAppConnQuery(querycli)
// mempool connection
memcli, err := app.clientCreator.NewTMSPClient()
if err != nil {
return err
}
app.mempoolConn = NewAppConnMempool(memcli)
// consensus connection
concli, err := app.clientCreator.NewTMSPClient()
if err != nil {
return err
}
app.consensusConn = NewAppConnConsensus(concli)
// ensure app is synced to the latest state
if app.handshaker != nil {
return app.handshaker.Handshake(app)
}
return nil
}