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handler.dummy.go
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/
handler.dummy.go
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package handlers
import (
"context"
"sync"
"go.uber.org/multierr"
"github.com/smartcontractkit/chainlink/v2/core/logger"
"github.com/smartcontractkit/chainlink/v2/core/services/gateway/api"
"github.com/smartcontractkit/chainlink/v2/core/services/gateway/config"
)
// DummyHandler forwards each request/response without doing any checks.
type dummyHandler struct {
donConfig *config.DONConfig
don DON
savedCallbacks map[string]*savedCallback
mu sync.Mutex
lggr logger.Logger
}
type savedCallback struct {
id string
callbackCh chan<- UserCallbackPayload
}
var _ Handler = (*dummyHandler)(nil)
func NewDummyHandler(donConfig *config.DONConfig, don DON, lggr logger.Logger) (Handler, error) {
return &dummyHandler{
donConfig: donConfig,
don: don,
savedCallbacks: make(map[string]*savedCallback),
lggr: lggr,
}, nil
}
func (d *dummyHandler) HandleUserMessage(ctx context.Context, msg *api.Message, callbackCh chan<- UserCallbackPayload) error {
d.mu.Lock()
d.savedCallbacks[msg.Body.MessageId] = &savedCallback{msg.Body.MessageId, callbackCh}
don := d.don
d.mu.Unlock()
var err error
// Send to all nodes.
for _, member := range d.donConfig.Members {
err = multierr.Combine(err, don.SendToNode(ctx, member.Address, msg))
}
return err
}
func (d *dummyHandler) HandleNodeMessage(ctx context.Context, msg *api.Message, nodeAddr string) error {
d.mu.Lock()
savedCb, found := d.savedCallbacks[msg.Body.MessageId]
delete(d.savedCallbacks, msg.Body.MessageId)
d.mu.Unlock()
if found {
// Send first response from a node back to the user, ignore any other ones.
savedCb.callbackCh <- UserCallbackPayload{Msg: msg, ErrCode: api.NoError, ErrMsg: ""}
close(savedCb.callbackCh)
}
return nil
}
func (d *dummyHandler) Start(context.Context) error {
return nil
}
func (d *dummyHandler) Close() error {
return nil
}