{"id":202565,"date":"2020-11-25T10:16:08","date_gmt":"2020-11-25T02:16:08","guid":{"rendered":"http:\/\/4563.org\/?p=202565"},"modified":"2020-11-25T10:16:08","modified_gmt":"2020-11-25T02:16:08","slug":"golang-context-%e7%9a%84%e7%9b%b8%e5%85%b3%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=202565","title":{"rendered":"golang context \u7684\u76f8\u5173\u4f7f\u7528"},"content":{"rendered":"
\n
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golang context \u7684\u76f8\u5173\u4f7f\u7528 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : shhch <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u5982\u9898\uff0c\u4e4b\u524d\u7684\u9879\u76ee\u4e2d\u6ca1\u6709\u4f7f\u7528 context\uff0c\u9ad8\u5e76\u53d1\u7684\u573a\u666f\u4e0b\uff0c\u65e5\u5fd7\u90fd\u96be\u4ee5\u5b9a\u4f4d\u95ee\u9898\uff0c\u4e8e\u662f\u51c6\u5907\u5728\u6240\u6709\u903b\u8f91\u51fd\u6570\u4e2d\u52a0\u4e0a context \uff08\u5de5\u4f5c\u91cf\u6709\u70b9\u5927\uff09\uff0c\u5e76\u4e3a\u6bcf\u6b21\u8bf7\u6c42\u5e26\u4e0a id \u6807\u8bc6\uff1b<\/p>\n

\u4f46\u662f\u9664\u6b64\u4e4b\u5916\u5c31\u6ca1\u6709\u5176\u4ed6\u4f5c\u7528\u4e86\uff0c\u5c31\u6709\u70b9\u6000\u7591\u662f\u5426\u6709\u5fc5\u8981\uff1b<\/p>\n

\u6709\u6ca1\u6709\u5927\u4f6c\u4ecb\u7ecd\u4e0b\u5b9e\u9645\u4e2d\u7684\u5176\u4ed6\u4f7f\u7528\u573a\u666f\u548c\u65b9\u5f0f\uff1f\uff08 With \u7cfb\u5217\u76ee\u524d\u4e5f\u6ca1\u6709\u53d1\u73b0\u6709\u4ec0\u4e48\u4f7f\u7528\u573a\u666f…\uff09<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (30<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : realbender <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e00\u822c\u53ef\u4ee5\u7528\u6765\u4f5c\u4e3a\u7f51\u7edc io \u8c03\u7528\u7684\u8d85\u65f6\u529f\u80fd,\u4f60\u7684\u9700\u6c42\u53ef\u80fd\u9700\u8981\u5728 log \u6253\u5370\u4e2d\u643a\u5e26\u4e00\u4e9b\u4e0a\u4e0b\u6587\u4fe1\u606f,\u4e0d\u4e00\u5b9a\u8981\u7528 context <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : shhch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @realbender \u73b0\u5728\u662f\u6ca1\u6709\u4f7f\u7528\u5230 context \u7684\uff0c\u6709\u6ca1\u6709\u5fc5\u8981\u5728\u903b\u8f91\u51fd\u6570\u91cc\u52a0\u4e0a context \u53c2\u6570\u5f80\u540e\u4f20\u9012\uff0c\u65b9\u4fbf\u540e\u7eed\u6269\u5c55\u4f7f\u7528 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xkeyideal <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6ca1\u4eba\u4f7f\u7528 context \u505a traceid \u7684\u4e8b\u60c5\uff0ccontext \u4e3b\u8981\u7528\u9014\u662f\u63a7\u5236\u5b50 goroutine \u7684\u5b58\u6d3b\uff0c\u4f60\u7684\u9700\u6c42\u53ef\u4ee5\u91c7\u7528 WithOption \u7684\u65b9\u5f0f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : eudore <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    http \u7684\u5c01\u88c5\u4e0b\u5c31\u597d\uff0crpc \u6709\u5168\u94fe\u8def\u65e5\u5fd7\u5c31\u662f context \u4f20\u9012 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : cloverstd <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal \u6211\u4eec\u7528\u4e86… <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : rhtututu <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal \u6211\u4eec\u4e5f\u7528\u4e86… <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : yzbythesea <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal \u6211\u4eec\u8fd8\u662f\u7528\u4e86… <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : xkeyideal <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @cloverstd \u4e3a\u4e86\u660e\u786e\u6570\u636e\u7c7b\u578b\uff0c\u6211\u4eec\u4e0d\u4f7f\u7528 context <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : shhch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u90a3\u6709\u6ca1\u6709\u5fc5\u8981\u5168\u90e8\u52a0\u4e0a context \u5b57\u6bb5\u5f80\u4e0b\u4f20\u9012\uff0c\u4f5c\u4e3a\u540e\u7eed\u9884\u7559\u4f7f\u7528\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : cyrivlclth <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal \u6211\u4eec\u4e5f\u7528\u4e86\u3002\u3002\u3002
    @shhch \u52a0 context \u8fd9\u4e2a\u5de5\u4f5c\u91cf\u8fd8\u597d\u5427\uff0c\u524d\u4e0d\u4e45\u521a\u52a0\u8fc7\uff0c\u7528 goland \u91cd\u6784\u529f\u80fd\u4e00\u4e0b\u5c31\u52a0\u597d\u4e86\u3002\u3002\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : Exceptions <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal \u90fd\u7528\u7684\u597d\u5427\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u5c31\u662f context\uff0c\u65e0\u9650\u4f20\u9012 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : ylsc633 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u4eec\u4e5f\u7528\u4e86 context \u4f20 traceid<\/p>\n

    \u4e3b\u8981\u662f\u9879\u76ee\u662f\u65b0\u5199\u7684, \u65e5\u5fd7\u548c\u65b9\u6cd5\u7b2c\u4e00\u4e2a\u53c2\u6570\u90fd\u662f ctx<\/p>\n

    \u597d\u5904\u5c31\u662f \u6027\u80fd\u597d\u5f88\u591a, \u5f0a\u7aef\u5c31\u662f\u6709\u70b9\u8822..<\/p>\n

    \u5982\u679c\u8001\u9879\u76ee,\u53ef\u4ee5\u7528\u4ee3\u7801\u65e0\u4fb5\u5165\u7684\u65b9\u6cd5,\u4e0d\u8fc7\u6027\u80fd\u6709\u70b9\u95ee\u9898.. <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : securityCoding <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal 233 ,\u6211\u4eec\u90fd\u5728\u7528 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : cloudzhou <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal trace id \u901a\u8fc7 context \u4f20\u9012\uff0c\u8fd9\u7b80\u76f4\u662f\u57fa\u672c\u64cd\u4f5c\u963f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : PiersSoCool <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    context \u5199\u5b9a\u65f6\u4efb\u52a1\uff0cwithCancel \u5728 gracefully shutdown \u7684\u65f6\u5019\u5f88\u597d\u7528\uff0c\u76d1\u542c <-ctx.Done() \u6216\u8005 <-ticker.C \uff08\u7ee7\u7eed\uff09\uff0c\u518d\u7528\u4e00\u4e2a channel \u76d1\u542c\u5b9a\u65f6\u4efb\u52a1\u5b8c\u6210\u7684\u6d88\u606f\uff0c\u5916\u5c42\u8c03\u7528 cancel \u7b49\u5f85 channel \u8fd4\u56de\u6570\u636e\u5c31\u597d <\/p>\n

    with \u65f6\u95f4\u7684\u5c31\u4e0d\u591a\u8bf4\u4e86<\/p>\n

    \u800c\u4e14\u6ca1\u5fc5\u8981\u5728\u6240\u6709\u51fd\u6570\u52a0\u4e0a Context\uff0c\u51e0\u4e2a\u5173\u952e\u5165\u53e3\u5c31\u77e5\u9053\u8c01\u6709\u95ee\u9898\u4e86\u5427 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : GopherDaily <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    At Google, we require that Go programmers pass a Context parameter as the first argument to every function on the call path between incoming and outgoing requests.<\/p>\n

    \u5efa\u8bae\u662f\u6240\u6709\u7684\u51fd\u6570\u7684\u7b2c\u4e00\u4e2a\u90fd\u5e26\u4e0a\u3002
    \u4f5c\u7528\u6709\u51e0\u4e2a\uff1a
    cancel, timeout, trace <\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : lewinlan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6da8\u59ff\u52bf\u4e86\u2026\u2026
    \u6211\u4ee5\u4e3a\u5728\u6240\u6709\u5730\u65b9\u4f20\u9012 ctx \u5f88\u50bb\u53c9\u2026\u2026
    \u770b\u5230\u5927\u5bb6\u90fd\u8fd9\u6837\u6211\u5c31\u653e\u5fc3\u4e86\uff1a) <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : lxml <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal #3 \u7528\u4e86 + 1 \u7528 context \u4f20\u9012 traceId \u662f\u4e3b\u6d41\u64cd\u4f5c\u2026\u2026 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : tiedan <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u4eec\u4e5f\u662f context \u4f20 traceId \u54c8\u54c8 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : K4 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @shhch \u7ba1\u4ed6\u4e09\u4e03\u4e8c\u5341\u4e00\uff0c\u63a5\u53e3\u8bbe\u8ba1\u7684\u65f6\u5019\u5c31\u52a0\u4e0a\uff0c\u7528\u4e0d\u7528\u518d\u8bf4\uff0c\u8bf4\u4e0d\u5b9a\u4ec0\u4e48\u65f6\u5019\u5c31\u7528\u4e0a\u4e86\u5462\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : unixeno <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    trace\uff0c\u7ba1\u7406 go routine \uff08\u63a7\u5236\u8d85\u65f6\u4ec0\u4e48\u7684\uff09
    \u5e94\u8be5\u4e3b\u8981\u5c31\u8fd9\u4e24\u4e2a\u7528\u4e86\uff0c\u5176\u5b9e\u5c31\u662f\u4e2a\u4e0a\u4e0b\u6587\u73af\u5883\u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : dingyaguang117 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u54c8\u54c8 tornado \u5355\u7ebf\u7a0b\u6211\u4eec\u4f7f\u7528 contextvar
    Flask \u4f7f\u7528 threadlocal<\/p>\n

    Go \u968f\u65f6\u8d77 \u6027\u80fd\u597d \u4e0d\u8fc7 ctx \u7528\u8d77\u6765\u9ebb\u70e6\u4e86\u70b9 <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : v2Geeker <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal \u6211\u4eec\u4e5f\u7528\u4e86\u3002context \u975e\u5e38\u9002\u5408\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : yuyoung <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @xkeyideal \u989d\uff0c\u6211\u597d\u50cf\u662f\u8fd9\u4e48\u7528\u7684\uff0c\u8fd9\u91cc\u6709\u4ec0\u4e48\u8bbe\u8ba1\u95ee\u9898\u5417\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : shhch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @K4 \u6ca1\u6bdb\u75c5\uff0c\u5168\u52a0\u4e0a\uff0c\u7528\u4e0d\u7528\u518d\u8bf4_(:\u0437\u300d\u2220)_ <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : tairan2006 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    cxt \u7684\u8bbe\u8ba1\u5176\u5b9e\u975e\u5e38\u7b80\u5355\u7c97\u66b4\u2026\u8fd9\u4e5f\u662f\u4e0d\u5982 java \u7684\u5730\u65b9\uff0c\u5f88\u591a\u65f6\u5019\u6ca1\u6cd5\u5bf9\u4ee3\u7801\u65e0\u4fb5\u5165\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : snowwalf <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u4eec\u4e5f\u662f context \u4f20 tracerid\uff0c\u63a5\u5165 http server\/client\uff0c\u5b9e\u73b0\u591a\u670d\u52a1\u5168\u94fe\u8def\u4e32\u8054\uff1b\u53e6\u5916 context \u91cc\u5e26\u4e0a stack\uff0c\u5b9e\u73b0\u6a21\u5757\u8c03\u7528\u5806\u6808\u6253\u70b9 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : mooyo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6211\u4eec\u4e5f\u7528\u4e86\uff0c\u4e0d\u592a\u7406\u89e3\u4e0d\u7528 ctx \u8981\u600e\u4e48\u505a\u94fe\u8def\u7684\u8ffd\u8e2a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : TypeErrorNone <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4e3b\u8981\u7528\u6765\u4f20\u53c2 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : shhch <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @mooyo +1
    @snowwalf \u5927\u4f6c\uff0c\u5806\u6808\u6253\u70b9\u5177\u4f53\u662f\u600e\u4e48\u505a\u7684\u554a <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

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