nginx+lua+ffmpeg实现七牛avinfo功能

异步实现执行命令
git clone github.com/juce/sockproc.git
cd sockproc
make
./sockproc /tmp/shell.sock
chmod 0666 /tmp/shell.sock
cd ..

git clone github.com/juce/lua-resty-shell.git
cp lua-resty-shell/lib/resty/shell.lua /usr/local/share/lua/5.1/resty/shell2.lua
cd ..

yum -y localinstall --nogpgcheck download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm
yum -y install ffmpeg ffmpeg-devel

在fastdfs上面添加avinfo功能
    location /file1/M00 {
        root /data/fastdfs_data/data/;
        set $avinfo 0;
        if ($args ~ "avinfo"){
            set $avinfo "${avinfo}1";
        }
        if ($uri ~ "/[a-zA-Z0-9]+/[a-zA-Z0-9]+(/[a-zA-Z0-9]+/[a-zA-Z0-9]+.*)") {
            set $file $document_root$1;
            set $avinfo "${avinfo}1";
        } 
        if ($avinfo = "011") {
            content_by_lua '
                ngx.header.content_type = "application/json";
                local shell = require("resty.shell2");
                local args = {
                    socket = "unix:/tmp/shell.sock",
                }
                local targetFile = ngx.var.file
                local command = "ffprobe -v quiet -print_format json -show_format -show_streams " .. targetFile
                local status, out, err = shell.execute(command, args)
                --- ngx.say(package.path);
                --- ngx.say(package.cpath);
                ngx.say(out);
            ';
        }
        ngx_fastdfs_module;
    }

访问
域名/file1/M00/02/05/oYYBAGAPtsuAdlf1ABj4W8LbwdQ894.mp3?avinfo