ngx_openresty 的 ngx.location.capture 指令直接调用 nginx-tfs 模块会 blocked 无法返回

harveyzh commented 11 years ago

类似的问题：

http://code.taobao.org/p/tfs/issue/1312/

系统信息

$ uname -a Linux tfs004 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

ngx_openresty 版本

$ ./nginx -V nginx version: ngx_openresty/1.2.7.1 built by gcc 4.4.6 20120305 (Red Hat 4.4.6-4) (GCC) TLS SNI support enabled configure arguments: --prefix=/home/server/openresty-debug/nginx --with-debug --with-cc-opt=-O0 --add-module=../ngx_devel_kit-0.2.18 --add-module=../iconv-nginx-module-0.10rc7 --add-module=../echo-nginx-module-0.42 --add-module=../xss-nginx-module-0.03rc9 --add-module=../ngx_coolkit-0.2rc1 --add-module=../set-misc-nginx-module-0.22rc8 --add-module=../form-input-nginx-module-0.07 --add-module=../encrypted-session-nginx-module-0.02 --add-module=../ngx_postgres-1.0rc2 --add-module=../srcache-nginx-module-0.19 --add-module=../ngx_lua-0.7.16 --add-module=../headers-more-nginx-module-0.19 --add-module=../array-var-nginx-module-0.03rc1 --add-module=../memc-nginx-module-0.13rc3 --add-module=../redis2-nginx-module-0.09 --add-module=../redis-nginx-module-0.3.6 --add-module=../auth-request-nginx-module-0.2 --add-module=../rds-json-nginx-module-0.12rc10 --add-module=../rds-csv-nginx-module-0.05rc2 --with-ld-opt=-Wl,-rpath,/home/server/openresty-debug/luajit/lib --with-http_ssl_module --with-http_stub_status_module --add-module=/home/makerpm/git/nginx-auth-ldap --add-module=/home/makerpm/git/nginx_upstream_hash --add-module=/home/makerpm/git/ngx_http_substitutions_filter_module --add-module=/home/makerpm/git/nginx-tfs

nginx-tfs 模块最新的 commit

$ git log -1 commit d1c8349bfa12d7f5ba9d445b87c1f93b0ef83e5f Merge: dcb7507 83d9a33 Author: Zheng Cen mingyan.zc@gmail.com Date: Thu Jan 17 03:03:57 2013 -0800

Merge pull request #12 from monadbobo/fix_upstream

Fix upstream

重现问题的步骤

(1) 使用下面的 nginx.conf 启动 nginx

nginx.conf: https://gist.github.com/harveyzh/5055847#file-nginx-conf

(2) ngx.location.capture 指令直接调用 nginx-tfs 模块会一直 block

测试命令： $ curl -i 127.0.0.1/test_block ^C

相关配置片段：

    location /test_block {
        content_by_lua '
            res = ngx.location.capture("/v1/tfs/T17yCTByJT1RCvBVdK")

            if res.status == ngx.HTTP_OK then
                ngx.print(res.body)
            else
                ngx.exit(res.status)
            end
        ';
    }

debug log: https://gist.github.com/harveyzh/5055847#file-error-log-block

block时的 debug log 停在

2013/02/28 18:41:06 [debug] 29836#0: 6 http copy filter: 0 "/v1/tfs/T17yCTByJT1RCvBVdK?" 2013/02/28 18:41:06 [debug] 29836#0: 6 http finalize request: 0, "/v1/tfs/T17yCTByJT1RCvBVdK?" a:0, c:2 2013/02/28 18:41:06 [debug] 29836#0: 6 lua run post subrequest handler, rc:0 c:2 2013/02/28 18:41:06 [debug] 29836#0: 6 lua restoring write event handler 2013/02/28 18:41:06 [debug] 29836#0: *6 http wake parent request: "/test_block?" 2013/02/28 18:41:06 [debug] 29836#0: keepalive dummy handler 2013/02/28 18:41:06 [debug] 29836#0: timer delta: 1 2013/02/28 18:41:06 [debug] 29836#0: posted events 0000000000000000 2013/02/28 18:41:06 [debug] 29836#0: worker cycle 2013/02/28 18:41:06 [debug] 29836#0: epoll timer: -1

(3) ngx.location.capture 指令间接通过 proxy_pass 调用 nginx-tfs 模块则 ok

测试命令： $ curl -i 127.0.0.1/test_ok HTTP/1.1 200 OK Server: ngx_openresty Date: Thu, 28 Feb 2013 10:59:44 GMT Content-Type: application/octet-stream Transfer-Encoding: chunked Connection: keep-alive

test!

相关配置片段：

    location /tfs/ {
        proxy_pass http://127.0.0.1/v1/tfs/;
    }

    location /test_ok {
        content_by_lua '
            res = ngx.location.capture("/tfs/T17yCTByJT1RCvBVdK")

            if res.status == ngx.HTTP_OK then
                ngx.print(res.body)
            else
                ngx.exit(res.status)
            end
        ';
    }

debug log: https://gist.github.com/harveyzh/5055847#file-error-log-ok

monadbobo commented 11 years ago

你好，现在的ngx tfs模块还不支持 sub request直接访问。

谢谢.

lidaohang commented 11 years ago

你好，能在lua里面取到文件然后通过lua 时时缩放图像吗？例如：GraphicsMagick，OpenCV

toontong commented 11 years ago

lua能调http请求就可以阿！

----------------------------- 华丽的分隔线 ----------------------------- +------------------------------------------------------------------+ | ^^ 继续努力.....赶上.....然后超越....... ^^ | +------------------------------------------------------------------+ ----------------------------- 华丽的分隔线 -----------------------------

2013/4/28 daohang notifications@github.com

你好，能在lua里面取到文件然后通过lua 时时缩放图像吗？例如：GraphicsMagick，OpenCV

— Reply to this email directly or view it on GitHubhttps://github.com/alibaba/nginx-tfs/issues/14#issuecomment-17129387 .

alibaba / nginx-tfs