如何用Faraday捕捉Faraday :: Error :: ConnectionFailed異常？

如果我運行從法拉第的HTTP請求，而網絡不可用（即在WiFi環境或脫機工作），這將是不錯的東西在默認情況下捕獲該異常：如何用Faraday捕捉Faraday :: Error :: ConnectionFailed異常？

 
/Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/net/http.rb:762:in `initialize': getaddrinfo: nodename nor servname provided, or not known (Faraday::Error::ConnectionFailed) 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/net/http.rb:762:in `open' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/net/http.rb:762:in `block in connect' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/timeout.rb:54:in `timeout' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/timeout.rb:99:in `timeout' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/net/http.rb:762:in `connect' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/net/http.rb:755:in `do_start' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/net/http.rb:744:in `start' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/net/http.rb:1284:in `request' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/1.9.1/net/http.rb:1026:in `get' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/adapter/net_http.rb:73:in `perform_request' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/adapter/net_http.rb:38:in `call' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/response.rb:8:in `call' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/response/logger.rb:20:in `call' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/request/authorization.rb:36:in `call' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/request/url_encoded.rb:14:in `call' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/request/multipart.rb:13:in `call' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/connection.rb:245:in `run_request' 
    from /Users/pmu/.rbenv/versions/1.9.3-p194/lib/ruby/gems/1.9.1/gems/faraday-0.8.5/lib/faraday/connection.rb:98:in `get' 
    from /Users/pmu/projects/bar/cli/lib/foo/rest_client.rb:32:in `list'

將如何默認情況下可以讓法拉第發現這個問題？

來源

2013-02-18 poseid

如果你想要它做的東西不是一個完整的堆棧跟蹤更好，你可以做這樣的事情在你的法拉第設置的基礎：

begin 
@app.call(env) 
rescue Faraday::Error::ConnectionFailed => e 
    puts "Connection failed: #{e}" 
    # Choose what you want to happen, for example in my gem I do 
    exit 1 
end

來源

2013-08-07 13:10:41

如何用Faraday捕捉Faraday :: Error :: ConnectionFailed異常？

回答

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