code.vegaprotocol.io/vega@v0.79.0/wallet/api/node/builder.go (about)

     1  // Copyright (C) 2023 Gobalsky Labs Limited
     2  //
     3  // This program is free software: you can redistribute it and/or modify
     4  // it under the terms of the GNU Affero General Public License as
     5  // published by the Free Software Foundation, either version 3 of the
     6  // License, or (at your option) any later version.
     7  //
     8  // This program is distributed in the hope that it will be useful,
     9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11  // GNU Affero General Public License for more details.
    12  //
    13  // You should have received a copy of the GNU Affero General Public License
    14  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15  
    16  package node
    17  
    18  import (
    19  	"fmt"
    20  	"time"
    21  
    22  	"go.uber.org/zap"
    23  )
    24  
    25  func BuildRoundRobinSelectorWithRetryingNodes(log *zap.Logger, hosts []string, retries uint64, requestTTL time.Duration) (Selector, error) {
    26  	nodes := make([]Node, 0, len(hosts))
    27  	for _, host := range hosts {
    28  		n, err := NewRetryingNode(log.Named("retrying-node"), host, retries, requestTTL)
    29  		if err != nil {
    30  			return nil, fmt.Errorf("could not initialize the node %q: %w", host, err)
    31  		}
    32  		nodes = append(nodes, n)
    33  	}
    34  
    35  	nodeSelector, err := NewRoundRobinSelector(log.Named("round-robin-selector"), nodes...)
    36  	if err != nil {
    37  		return nil, fmt.Errorf("could not instantiate the round-robin node selector: %w", err)
    38  	}
    39  
    40  	return nodeSelector, nil
    41  }