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api.go
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api.go
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package chunkinfo
import (
"context"
"time"
"github.com/FavorLabs/favorX/pkg/boson"
"github.com/FavorLabs/favorX/pkg/logging"
"github.com/FavorLabs/favorX/pkg/rpc"
"github.com/FavorLabs/favorX/pkg/subscribe"
"github.com/prometheus/client_golang/prometheus"
)
func (ci *ChunkInfo) API() rpc.API {
return rpc.API{
Namespace: "chunkInfo",
Version: "1.0",
Service: &apiService{ci: ci},
Public: true,
}
}
type apiService struct {
ci *ChunkInfo
}
func (a *apiService) DownloadProgress(ctx context.Context, rootCids []string) (*rpc.Subscription, error) {
notifier, supported := rpc.NotifierFromContext(ctx)
if !supported {
return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported
}
sub := notifier.CreateSubscription()
rcids := make([]boson.Address, 0, len(rootCids))
for _, rootCid := range rootCids {
rcid, err := boson.ParseHexAddress(rootCid)
if err != nil {
return nil, err
}
rcids = append(rcids, rcid)
}
a.ci.SubscribeDownloadProgress(notifier, sub, rcids)
return sub, nil
}
func (a *apiService) RetrievalProgress(ctx context.Context, rootCid string) (*rpc.Subscription, error) {
notifier, supported := rpc.NotifierFromContext(ctx)
if !supported {
return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported
}
sub := notifier.CreateSubscription()
cid, err := boson.ParseHexAddress(rootCid)
if err != nil {
return nil, err
}
a.ci.SubscribeRetrievalProgress(notifier, sub, cid)
return sub, nil
}
func (a *apiService) RootCidStatus(ctx context.Context) (*rpc.Subscription, error) {
notifier, supported := rpc.NotifierFromContext(ctx)
if !supported {
return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported
}
sub := notifier.CreateSubscription()
a.ci.SubscribeRootCidStatus(notifier, sub)
return sub, nil
}
func (a *apiService) Metrics(ctx context.Context) (*rpc.Subscription, error) {
notifier, supported := rpc.NotifierFromContext(ctx)
if !supported {
return &rpc.Subscription{}, rpc.ErrNotificationsUnsupported
}
sub := notifier.CreateSubscription()
iNotifier := subscribe.NewNotifier(notifier, sub)
_ = a.ci.subPub.Subscribe(iNotifier, "chunkInfo", "metrics", "")
go func() {
logging.Tracef("%s metrics subscribe success", sub.ID)
send, out := subscribe.ProcessMetricMsg(sub, []prometheus.Metric{
a.ci.metrics.PyramidTotalRetrieved,
a.ci.metrics.PyramidTotalTransferred,
})
if send {
err := a.ci.subPub.Publish("chunkInfo", "metrics", "", out)
if err != nil {
logging.Errorf("%s metrics notify %s", sub.ID, err)
} else {
logging.Tracef("%s metrics notify success", sub.ID)
}
}
t := time.NewTicker(time.Second * 5)
defer t.Stop()
for {
select {
case <-t.C:
send, out = subscribe.ProcessMetricMsg(sub, []prometheus.Metric{
a.ci.metrics.PyramidTotalRetrieved,
a.ci.metrics.PyramidTotalTransferred,
})
if send {
err := a.ci.subPub.Publish("retrieval", "metrics", "", out)
if err != nil {
logging.Errorf("%s metrics notify %s", sub.ID, err)
} else {
logging.Tracef("%s metrics notify success", sub.ID)
}
}
case e := <-sub.Err():
if e == nil {
logging.Debugf("%s metrics quit unsubscribe", sub.ID)
} else {
logging.Warningf("%s metrics quit %s", sub.ID, e)
}
subscribe.CacheRemove(ctx, sub.ID)
return
}
}
}()
return sub, nil
}