Golang Logger.Println方法代码示例

func (s *WorkerState) offer(log bitwrk.Logger) {
	defer log.Printf("Stopped offering")
	s.cond.L.Lock()
	defer s.cond.L.Unlock()
	interrupt := make(chan bool, 1)
	for {
		// Interrupt if unregistered, stop iterating
		if s.Unregistered {
			log.Printf("No longer registered")
			interrupt <- true
			break
		}
		if s.Blockers == 0 {
			s.LastError = ""
			if sell, err := s.m.activityManager.NewSell(s); err != nil {
				s.LastError = fmt.Sprintf("Error creating sell: %v", err)
				log.Println(s.LastError)
				s.blockFor(20 * time.Second)
			} else {
				s.Blockers++
				go s.executeSell(log, sell, interrupt)
			}
		}
		s.cond.Wait()
	}
}

// Manages the complete lifecycle of a sell
func (a *SellActivity) PerformSell(log bitwrk.Logger, receiveManager *ReceiveManager, interrupt <-chan bool) error {
	defer log.Println("Sell finished")
	err := a.doPerformSell(log, receiveManager, interrupt)
	if err != nil {
		a.lastError = err
	}
	a.alive = false
	return err
}

func (s *WorkerState) executeSell(log bitwrk.Logger, sell *SellActivity, interrupt <-chan bool) {
	defer func() {
		s.cond.L.Lock()
		s.Blockers--
		s.cond.Broadcast()
		s.cond.L.Unlock()
	}()
	defer sell.Dispose()
	if err := sell.PerformSell(log.Newf("Sell #%v", sell.GetKey()), s.m.receiveManager, interrupt); err != nil {
		s.LastError = fmt.Sprintf("Error performing sell (delaying next sell by 20s): %v", err)
		log.Println(s.LastError)
		s.cond.L.Lock()
		s.blockFor(20 * time.Second)
		s.cond.L.Unlock()
	} else {
		log.Printf("Returned from PerformSell successfully")
	}
}

func (a *SellActivity) HandleWork(log bitwrk.Logger, workFile cafs.File, buyerSecret bitwrk.Thash) (io.ReadCloser, error) {
	// Wait for buyer to establish
	active := true
	var workHash, workSecretHash *bitwrk.Thash
	log.Printf("Watching transaction state...")
	a.waitWhile(func() bool {
		active = a.tx.State == bitwrk.StateActive
		workHash, workSecretHash = a.tx.WorkHash, a.tx.WorkSecretHash
		log.Printf("  state: %v    phase: %v", a.tx.State, a.tx.Phase)
		return active && a.tx.Phase != bitwrk.PhaseTransmitting
	})

	if !active {
		return nil, fmt.Errorf("Transaction timed out waiting for buyer to establish")
	}

	// Verify work hash
	if *workHash != bitwrk.Thash(workFile.Key()) {
		return nil, fmt.Errorf("WorkHash and received data do not match")
	}

	if err := verifyBuyerSecret(workHash, workSecretHash, &buyerSecret); err != nil {
		return nil, err
	}

	log.Println("Got valid work data. Publishing buyer's secret.")
	if err := SendTxMessagePublishBuyerSecret(a.txId, a.identity, &buyerSecret); err != nil {
		return nil, fmt.Errorf("Error publishing buyer's secret: %v", err)
	}

	log.Println("Starting to work...")
	r, err := a.dispatchWork(log, workFile)
	if err != nil {
		log.Printf("Rejecting work because of error '%v'", err)
		if err := SendTxMessageRejectWork(a.txId, a.identity); err != nil {
			log.Printf("Rejecting work failed: %v", err)
		}
	}
	return r, err
}

func (a *Trade) beginTrade(log bitwrk.Logger, interrupt <-chan bool) error {
	// wait for grant or reject
	log.Println("Waiting for permission")

	// Get a permission for the sell
	if err := a.awaitPermission(interrupt); err != nil {
		return fmt.Errorf("Error awaiting permission: %v", err)
	}
	log.Printf("Got permission. Price: %v", a.price)

	// Prevent too many unmatched bids on server
	key := fmt.Sprintf("%v-%v", a.bidType, a.article)
	if err := a.manager.checkoutToken(key, NumUnmatchedBids, interrupt); err != nil {
		return err
	}
	defer a.manager.returnToken(key)

	if err := a.awaitBid(); err != nil {
		return fmt.Errorf("Error awaiting bid: %v", err)
	}
	log.Printf("Got bid id: %v", a.bidId)

	if err := a.awaitTransaction(log); err != nil {
		return fmt.Errorf("Error awaiting transaction: %v", err)
	}
	log.Printf("Got transaction id: %v", a.txId)

	if tx, etag, err := FetchTx(a.txId, ""); err != nil {
		return err
	} else {
		a.tx = tx
		a.txETag = etag
	}

	return nil
}