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les: stop ODR retrievals at shutdown

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This commit is contained in:
Zsolt Felfoldi 2017-09-16 21:00:14 +02:00
parent 89860f4197
commit e9b9945242
2 changed files with 7 additions and 4 deletions
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6
les/odr.go
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@ -64,7 +64,7 @@ type Msg struct {
// Retrieve tries to fetch an object from the LES network.
// If the network retrieval was successful, it stores the object in local db.
func (self *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err error) {
func (odr *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err error) {
lreq := LesRequest(req)
reqID := genReqID()
@ -84,9 +84,9 @@ func (self *LesOdr) Retrieve(ctx context.Context, req light.OdrRequest) (err err
},
}
if err = self.retriever.retrieve(ctx, reqID, rq, func(p distPeer, msg *Msg) error { return lreq.Validate(self.db, msg) }); err == nil {
if err = odr.retriever.retrieve(ctx, reqID, rq, func(p distPeer, msg *Msg) error { return lreq.Validate(odr.db, msg) }, odr.stop); err == nil {
// retrieved from network, store in db
req.StoreResult(self.db)
req.StoreResult(odr.db)
} else {
log.Debug("Failed to retrieve data from network", "err", err)
}

5
les/retrieve.go
View file

@ -22,6 +22,7 @@ import (
"context"
"crypto/rand"
"encoding/binary"
"fmt"
"sync"
"time"
@ -111,12 +112,14 @@ func newRetrieveManager(peers *peerSet, dist *requestDistributor, serverPool pee
// that is delivered through the deliver function and successfully validated by the
// validator callback. It returns when a valid answer is delivered or the context is
// cancelled.
func (rm *retrieveManager) retrieve(ctx context.Context, reqID uint64, req *distReq, val validatorFunc) error {
func (rm *retrieveManager) retrieve(ctx context.Context, reqID uint64, req *distReq, val validatorFunc, shutdown chan struct{}) error {
sentReq := rm.sendReq(reqID, req, val)
select {
case <-sentReq.stopCh:
case <-ctx.Done():
sentReq.stop(ctx.Err())
case <-shutdown:
sentReq.stop(fmt.Errorf("Client is shutting down"))
}
return sentReq.getError()
}