Ruby：如何处理 Mongo 副本集 Mongo::ConnectionFailure 异常？答案

【问题标题】：Ruby: How to handle Mongo replica set Mongo::ConnectionFailure exception?Ruby：如何处理 Mongo 副本集 Mongo::ConnectionFailure 异常？
【发布时间】：2014-09-19 13:48:18
【问题描述】：

如何处理 Ruby 中的 Mogo 副本集 Mongo::ConnectionFailure 异常？

试过了：

  begin
    $mongo = Mongo::MongoReplicaSetClient.new(['seed1:27017', 'seed2:27017', 'seed3:27017'], :read => :primary, :rs_name => 'rs0', :connect_timeout => 30, :op_timeout => 30)
    mongo = $mongo.db('db_name')
  rescue Exception => ex
    puts ex.message
  rescue Mongo::ConnectionFailure => ex
    puts ex.message
  rescue RuntimeError => ex
    puts ex.message
  rescue => ex
    puts ex.message
  end

没有人可以处理救援块的异常信息

【问题讨论】：

标签： ruby mongodb exception-handling replication

【解决方案1】：

解决了：

def rescue_mongo_failures(max_retries=60)
  retries = 0

  begin
    yield
  rescue Mongo::ConnectionFailure => ex
    retries += 1
    # here you can get ex.message
    raise ex if retries > max_retries
    retry
  end
end

def rescue_mongo_failures do
  $mongo = Mongo::MongoReplicaSetClient.new(['seed1:27017', 'seed2:27017', 'seed3:27017'], :read => :primary, :rs_name => 'rs0', :connect_timeout => 30, :op_timeout => 30)
  mongo = $mongo.db('db_name')
  $mongo.db.stats
end

【讨论】：