我想覆盖this method，在此缩写。
class Redis
module Connection
class Ruby
include Redis::Connection::CommandHelper
def self.connect(config)
if config[:scheme] == "unix"
sock = UNIXSocket.connect(config[:path], config[:timeout])
else
sock = TCPSocket.connect(config[:host], config[:port], config[:timeout])
if config[:scheme] == "rediss" or config[:use_ssl]
ssl_context = OpenSSL::SSL::SSLContext.new
ssl_context.ca_file = config[:ssl_ca_file]
ssl_context.key = config[:ssl_key]
ssl_context.cert = config[:ssl_cert]
ssl_context.verify_mode = config[:ssl_verify_mode]
ssl_client = OpenSSL::SSL::SSLSocket.new sock, ssl_context
ssl_client.connect
sock = ssl_client
end
end
instance = new(sock)
instance.timeout = config[:timeout]
instance.set_tcp_keepalive config[:tcp_keepalive]
instance
end
end
end
end
所以我创建了一个RubyGem，它对'redis'有一个运行时依赖。在gem的lib文件夹中，我有一个带
的文件begin
require "openssl"
rescue LoadError
#ignore the error, ssl support will not work
end
Redis::Connection::Ruby.class_eval do
def self.connect(config)
if config[:scheme] == "unix"
sock = UNIXSocket.connect(config[:path], config[:timeout])
else
sock = TCPSocket.connect(config[:host], config[:port], config[:timeout])
if config[:scheme] == "rediss" or config[:use_ssl]
ssl_context = OpenSSL::SSL::SSLContext.new
ssl_context.ca_file = config[:ssl_ca_file]
ssl_context.key = config[:ssl_key]
ssl_context.cert = config[:ssl_cert]
ssl_context.verify_mode = config[:ssl_verify_mode]
ssl_client = OpenSSL::SSL::SSLSocket.new sock, ssl_context
ssl_client.connect
sock = ssl_client
end
end
instance = new(sock)
instance.timeout = config[:timeout]
instance.set_tcp_keepalive config[:tcp_keepalive]
instance
end
end
这是我得到的错误：
/vagrant/misinformed/redis-rb-ssl/lib/redis/connection/ruby.rb:7:in `<top (required)>': uninitialized constant Redis::Connection::Ruby (NameError)
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/redis-3.2.1/lib/redis/connection.rb:9:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/redis-3.2.1/lib/redis/connection.rb:9:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/redis-3.2.1/lib/redis.rb:2631:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/redis-3.2.1/lib/redis.rb:2631:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:76:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:72:in `each'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:72:in `block in require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:61:in `each'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:61:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler.rb:134:in `require'
from /vagrant/dragondoor/config/application.rb:7:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands/commands_tasks.rb:146:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands/commands_tasks.rb:146:in `require_application_and_environment!'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands/commands_tasks.rb:68:in `console'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:8:in `require'
from bin/rails:8:in `<main>'
如何覆盖该方法？我的猜测是我要么命名空间错误，要么我需要require一些东西，但我无法得到任何工作。
更新：
根据删除的评论，我也尝试了
begin
require "openssl"
rescue LoadError
#ignore the error, ssl support will not work
end
class Redis
module Connection
Ruby.class_evel do
def self.connect(config)
if config[:scheme] == "unix"
sock = UNIXSocket.connect(config[:path], config[:timeout])
else
sock = TCPSocket.connect(config[:host], config[:port], config[:timeout])
if config[:scheme] == "rediss" or config[:use_ssl]
ssl_context = OpenSSL::SSL::SSLContext.new
ssl_context.ca_file = config[:ssl_ca_file]
ssl_context.key = config[:ssl_key]
ssl_context.cert = config[:ssl_cert]
ssl_context.verify_mode = config[:ssl_verify_mode]
ssl_client = OpenSSL::SSL::SSLSocket.new sock, ssl_context
ssl_client.connect
sock = ssl_client
end
end
instance = new(sock)
instance.timeout = config[:timeout]
instance.set_tcp_keepalive config[:tcp_keepalive]
instance
end
end
end
end
这似乎让我走得更远，但仍然收到错误信息
/home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.2.0/lib/rails/app_rails_loader.rb:39: warning: Insecure world writable dir /vagrant/dragondoor in PATH, mode 040777
/home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler.rb:302: warning: Insecure world writable dir /vagrant/dragondoor in PATH, mode 040777
/vagrant/misinformed/redis-rb-ssl/lib/redis/connection/ruby.rb:9:in `<module:Connection>': uninitialized constant Redis::Connection::Ruby (NameError)
from /vagrant/misinformed/redis-rb-ssl/lib/redis/connection/ruby.rb:8:in `<class:Redis>'
from /vagrant/misinformed/redis-rb-ssl/lib/redis/connection/ruby.rb:7:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/redis-3.2.1/lib/redis/connection.rb:9:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/redis-3.2.1/lib/redis/connection.rb:9:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/redis-3.2.1/lib/redis.rb:2631:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/redis-3.2.1/lib/redis.rb:2631:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:76:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:72:in `each'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:72:in `block in require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:61:in `each'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler/runtime.rb:61:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/bundler-1.7.12/lib/bundler.rb:134:in `require'
from /vagrant/dragondoor/config/application.rb:7:in `<top (required)>'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands/commands_tasks.rb:146:in `require'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands/commands_tasks.rb:146:in `require_application_and_environment!'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands/commands_tasks.rb:68:in `console'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
from /home/vagrant/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/railties-4.1.9/lib/rails/commands.rb:17:in `<top (required)>'
from bin/rails:8:in `require'
from bin/rails:8:in `<main>'
答案 0 :(得分：0)
尝试将require 'redis'添加到您修补方法的文件中：
require 'redis'
class Redis
module Connection
class Ruby
def self.connect(config)
puts 'the method is overriden'
end
end
end
end