使用Nginx作頁面採集, Kafka收集到對應Topic

時間 2020-12-06

標籤 html jquery linux nginx c++ git github ajax docker json 欄目 Nginx 简体版

原文原文鏈接

0.架構簡介

模擬線上的實時流，好比用戶的操做日誌，採集到數據後，進行處理，暫時只考慮數據的採集，使用Html+Jquery+Nginx+Ngx_kafka_module+Kafka來實現，其中Ngx_kafka_module 是開源的專門用來對接Nginx和Kafka的一個組件。html

1.需求描述

1.1 用`html`和`jquery` 模擬用戶請求日誌

其中包括下面下面幾項：jquery

用戶id:user_id, 訪問時間:act_time, 操做: (action,包括click,job_collect,cv_send,cv_upload)linux

企業編碼job_codenginx

1.2 用Nginx接受1.1中的請求

1.3 接受完請求後，使用ngx_kafka_module將數據發送到Kafka的主題tp_individual 中。

1.4 在kafka中使用一個消費者消費該主題，觀察

2.搭建步驟

2.1 Kafka安裝

因爲使用現成的已安裝好的docker-kafka鏡像，因此直接啓動便可.c++

2.2 安裝Nginx，並啓動

$ cd /usr/local/src
$ git clone git@github.com:edenhill/librdkafka.git
# 進入到librdkafka，而後進行編譯
$  cd librdkafka
$  yum install -y gcc gcc-c++ pcre-devel zlib-devel
$  ./configure
$  make && make install

$ yum -y install make zlib-devel gcc-c++ libtool openssl openssl-devel
$ cd /opt/hoult/software
# 1.下載
$ wget http://nginx.org/download/nginx-1.18.0.tar.gz
# 2.解壓
$ tar -zxf nginx-1.18.0.tar.gz -C /opt/hoult/servers
# 3. 下載模塊源碼
$ cd /opt/hoult/software
$ git clone git@github.com:brg-liuwei/ngx_kafka_module.git
# 4. 編譯
$ cd /opt/hoult/servers/nginx-1.18.0
$ ./configure --add-module=/opt/hoult/software/ngx_kafka_module/
$ make && make install 
# 5.刪除Nginx安裝包
$ rm /opt/hoult/software/nginx-1.18.0.tar.gz
# 6.啓動nginx
$ cd /opt/hoult/servers/nginx-1.18.0
$ nginx

3.相關配置

3.1 nginx配置nginx.conf

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    kafka;
    kafka_broker_list linux121:9092;

    server {
        listen       9090;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        #------------kafka相關配置開始------------
        location = /kafka/log {
                #跨域相關配置
                add_header 'Access-Control-Allow-Origin' $http_origin;
                add_header 'Access-Control-Allow-Credentials' 'true';
                add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';

                kafka_topic tp_individual;
        }

        #error_page  404              /404.html;
    }

}

3.2 啓動kafka 生產者和消費者

# 建立topic
kafka-topics.sh --zookeeper linux121:2181/myKafka --create --topic tp_individual --partitions 1 --replication-factor 1
# 建立消費者
kafka-console-consumer.sh --bootstrap-server linux121:9092 --topic tp_individual --from-beginning
# 建立生產者測試
kafka-console-producer.sh --broker-list linux121:9092 --topic tp_individual

3.3 編寫Html + Jquery代碼

<!DOCTYPE html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1,shrink-to-fit=no">
        <title>index</title>
        <!-- jquery cdn, 可換其餘 -->
        <script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.5.1/jquery.js"></script>
    </head>
    <body>
        <input id="click" type="button" value="點擊" onclick="operate('click')" />
        <input id="collect" type="button" value="收藏" onclick="operate('job_collect')" />
        <input id="send" type="button" value="投簡歷" onclick="operate('cv_send')" />
        <input id="upload" type="button" value="上傳簡歷" onclick="operate('cv_upload')" />
    </body>

    <script>

        function operate(action) {

            var json = {'user_id': 'u_donald', 'act_time': current().toString(), 'action': action, 'job_code': 'donald'};

            $.ajax({
                url:"http://linux121:8437/kafka/log",
                type:"POST" ,
                crossDomain: true,
                data: JSON.stringify(json),
                // 下面這句話容許跨域的cookie訪問
                xhrFields: {
                    withCredentials: true
                },
                success:function (data, status, xhr) {

                    // console.log("操做成功：'" + action)
                },
                error:function (err) {

                    // console.log(err.responseText);
                }
            });
        };

        function current() {
            var d   = new Date(),
                str = '';
            str += d.getFullYear() + '-';
            str += d.getMonth() + 1 + '-';
            str += d.getDate() + ' ';
            str += d.getHours() + ':';
            str += d.getMinutes() + ':';
            str += d.getSeconds();
            return str;
        }
    </script>

</html>

將a.html 放在nginx的目錄下，瀏覽器訪問192.168.18.128:9090git