https://flume.apache.org/FlumeDeveloperGuide.html#client-sdk

flume使用之httpSource - CSDN博客 https://blog.csdn.net/liuxiao723846/article/details/78131732

flume自定义sink之文件 - 伊米伊念 - 博客园 https://www.cnblogs.com/sunyaxue/p/6645753.html

flume自定义组件的 jar 包管理 - CSDN博客 https://blog.csdn.net/u012373815/article/details/54352177

package com.mycom;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import org.apache.flume.Channel;

import org.apache.flume.Context;

import org.apache.flume.Event;

import org.apache.flume.EventDeliveryException;

import org.apache.flume.Transaction;

import org.apache.flume.conf.Configurable;

import org.apache.flume.sink.AbstractSink;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class MyFlumeSink extends AbstractSink implements Configurable {

    private static final Logger logger = LoggerFactory.getLogger(MyFlumeSink.class);

    private static final String PROP_KEY_ROOTPATH = "fileName";

    private String fileName;

    @Override

    public void configure(Context context) {

        // TODO Auto-generated method stub

        fileName = context.getString(PROP_KEY_ROOTPATH);

    }

    @Override

    public Status process() throws EventDeliveryException {

        // TODO Auto-generated method stub

        Channel ch = getChannel();

        Transaction txn = ch.getTransaction();

        Event event = null;

        txn.begin();

        while (true) {

            event = ch.take();

            if (event != null) {

                break;

            }

        }

        try {

            logger.debug("Get event.");

            String body = new String(event.getBody());

            System.out.println("event.getBody()-----" + body);

            String res = body + ":" + System.currentTimeMillis() + "\r\n";

            File file = new File(fileName);

            FileOutputStream fos = null;

            try {

                fos = new FileOutputStream(file, true);

            } catch (FileNotFoundException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

            try {

                fos.write(res.getBytes());

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

            try {

                fos.close();

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

            txn.commit();

            return Status.READY;

        } catch (Throwable th) {

            txn.rollback();

            if (th instanceof Error) {

                throw (Error) th;

            } else {

                throw new EventDeliveryException(th);

            }

        } finally {

            txn.close();

        }

    }

}

　　

[root@d1 apache-flume-1.8.0-bin]# cat conf/http_test.conf

a1.sources=r1

a1.sinks=k1

a1.channels=c1

a1.sources.r1.type=http

a1.sources.r1.bind=0.0.0.0

a1.sources.r1.port=50000

a1.sources.r1.channels=c1

a1.sinks.k1.type=logger

a1.sinks.k1.channel=c1

a1.sinks.k1.type = com.mycom.MyFlumeSink

a1.sinks.k1.fileName=/home/mysinks.txt

a1.channels.c1.type=memory

#a1.channels.c1.capacity=1000

#a1.channels.c1.transactionCapacity=100

a1.channels.c1.capacity=8

a1.channels.c1.transactionCapacity=4

[root@d1 apache-flume-1.8.0-bin]#

　　

[root@d1 home]# cat ~/.bash_profile
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH

JAVA_HOME=/usr/local/jdk;export JAVA_HOME;

HADOOP_PREFIX=/home/hadoop-2.9.1;export HADOOP_PREFIX;HADOOP_CONF_DIR=$HADOOP_PREFIX/etc/hadoop;export HADOOP_CONF_DIR;HADOOP_HOME=/home/hadoop-2.9.1;export HADOOP_HOME;HADOOP_PREFIX=/home/hadoop-2.9.1;export HADOOP_PREFIX;HADOOP_CONF_DIR=$HADOOP_PREFIX/etc/hadoop;export HADOOP_CONF_DIR;HADOOP_HOME=/home/hadoop-2.9.1;export HADOOP_HOME;HADOOP_YARN_HOME=$HADOOP_PREFIX;export HADOOP_YARN_HOME;
[root@d1 home]#

微信小程序入门篇（二）（wx.request的json数据传输） - 微风&细雨 - 博客园 https://www.cnblogs.com/weifengxiyu/p/6515317.html

bin/flume-ng agent -c /home/apache-flume-1.8.0-bin/conf/  -f  /home/apache-flume-1.8.0-bin/conf/http_test.conf -n a1 -Dflume.root.logger=INFO,console -C /home/MyBgJavaLan/target/MyAid-1.0.0-jar-with-dependencies.jar

[INFO]
[INFO] --- maven-jar-plugin:2.3.2:jar (default-jar) @ MyAid ---
[INFO] Building jar: /home/MyBgJavaLan/target/MyAid-1.0.0.jar
[INFO]
[INFO] --- maven-assembly-plugin:2.4:single (make-assembly) @ MyAid ---
[INFO] artifact net.minidev:json-smart: checking for updates from central
[INFO] artifact net.minidev:json-smart: checking for updates from dynamodb-local-oregon
[INFO] artifact net.minidev:json-smart: checking for updates from apache.snapshots.https
[INFO] artifact net.minidev:json-smart: checking for updates from repository.jboss.org
[INFO] Building jar: /home/MyBgJavaLan/target/MyAid-1.0.0-jar-with-dependencies.jar
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 58.121s
[INFO] Finished at: Tue Aug 07 17:33:01 CST 2018
[INFO] Final Memory: 39M/749M
[INFO] ------------------------------------------------------------------------
[root@d1 MyBgJavaLan]# mvn clean;mvn compile;mvn package;

存在的问题：

[DEBUG] 2018-08-07 17:39:59,103 method:org.apache.flume.SinkRunner.stop(SinkRunner.java:104)
Waiting for runner thread to exit
[DEBUG] 2018-08-07 17:39:59,604 method:org.apache.flume.SinkRunner.stop(SinkRunner.java:104)
Waiting for runner thread to exit
[DEBUG] 2018-08-07 17:40:00,104 method:org.apache.flume.SinkRunner.stop(SinkRunner.java:104)
Waiting for runner thread to exit
[DEBUG] 2018-08-07 17:40:00,604 method:org.apache.flume.SinkRunner.stop(SinkRunner.java:104)
Waiting for runner thread to exit
[DEBUG] 2018-08-07 17:40:01,105 method:org.apache.flume.SinkRunner.stop(SinkRunner.java:104)
Waiting for runner thread to exit
[DEBUG] 2018-08-07 17:40:01,605 method:org.apache.flume.SinkRunner.stop(SinkRunner.java:104)
Waiting for runner thread to exit

package com.mycom;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

import com.alibaba.fastjson.JSON;

import com.alibaba.fastjson.JSONObject;

import org.apache.flume.Channel;

import org.apache.flume.Context;

import org.apache.flume.Event;

import org.apache.flume.EventDeliveryException;

import org.apache.flume.Transaction;

import org.apache.flume.conf.Configurable;

import org.apache.flume.sink.AbstractSink;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import com.google.gson.JsonArray;

import com.google.gson.JsonIOException;

import com.google.gson.JsonObject;

import com.google.gson.JsonParser;

import com.google.gson.JsonSyntaxException;

public class MyFlumeSink extends AbstractSink implements Configurable {

    private static final Logger logger = LoggerFactory.getLogger(MyFlumeSink.class);

    private static final String PROP_KEY_ROOTPATH = "fileName";

    private String fileName;

    @Override

    public void configure(Context context) {

        // TODO Auto-generated method stub

        fileName = context.getString(PROP_KEY_ROOTPATH);

    }

    @Override

    public Status process() throws EventDeliveryException {

        // TODO Auto-generated method stub

        Channel ch = getChannel();

        Transaction txn = ch.getTransaction();

        Event event = null;

        txn.begin();

        while (true) {

            event = ch.take();

            if (event != null) {

                break;

            }

        }

        try {

            logger.debug("Get event.");

// request.getParameter("username")

//            JSON json = JSONObject.parseObject(event.getBody());

            //JSONObject jsonObject1 = JSONObject.parseObject(JSON_OBJ_STR); //因为JSONObject继承了JSON，所以这样也是可以的

//            System.out.println(jsonObject.getString("studentName")+":"+jsonObject.getInteger("studentAge"));

//            String body = jsonObject.getString("body");

//

            //old

            //JAVA解析JSON数据 - monsterLin - 博客园 https://www.cnblogs.com/boy1025/p/4551593.html

//            String body = new String(event.getBody());

            String body = event.getBody().toString();

            JsonParser parse = new JsonParser();  //创建json解析器

            JsonObject json = (JsonObject) parse.parse(body);  //创建jsonObject对象

            String bodyReal = json.get("body").getAsString();

            System.out.println("event.getBody()-----" + bodyReal);

            String res = bodyReal + ":" + System.currentTimeMillis() + "\r\n";

            File file = new File(fileName);

            FileOutputStream fos = null;

            try {

                fos = new FileOutputStream(file, true);

            } catch (FileNotFoundException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

            try {

                fos.write(res.getBytes());

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

            try {

                fos.close();

            } catch (IOException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

            txn.commit();

            return Status.READY;

        } catch (Throwable th) {

            txn.rollback();

            if (th instanceof Error) {

                throw (Error) th;

            } else {

                throw new EventDeliveryException(th);

            }

        } finally {

            txn.close();

        }

    }

}
package com.mycom;

import org.apache.flume.Event;

import org.apache.flume.EventDeliveryException;

import org.apache.flume.api.RpcClient;

import org.apache.flume.api.RpcClientFactory;

import org.apache.flume.event.EventBuilder;

import java.nio.charset.Charset;

import java.text.SimpleDateFormat;

//http://flume.apache.org/FlumeDeveloperGuide.html

public class MyAppFlume {

    public static void main(String[] args) {

        MyRpcClientFacade client = new MyRpcClientFacade();

        // Initialize client with the remote Flume agent's host and port

//        client.init("hadoop1", 41414);

//        client.init("192.168.3.101", 41414);

        client.init("0.0.0.0", 41414);

        // Send 10 events to the remote Flume agent. That agent should be configured to listen with an AvroSource.

        String sampleData = "Hello Flume!";

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd--HH-mm-ss");

        long cTm = System.currentTimeMillis();

        String df = sdf.format(cTm);

        System.out.println(df);

        String str_ = "";

        for (int i = 0; i < 14; i++) {

            str_ = str_ + i + df + "加油！！" + sampleData;

        }

        System.out.println(str_);

//        for (int i = 0; i < 20; i++) {

//            String str = i + "------------" + str_ + df + "加油！！" + sampleData;

//            System.out.println(str);

//            client.sendDataToFlume(str);

//        }

        String str = "对StringBuilder抛出ArrayIndexOutOfBoundsException的探究 - CSDN博客 https://blog.csdn.net/liu_005/article/details/73699604" + "------------" + str_ + df + "加油！！" + sampleData;

        System.out.println(str);

        client.sendDataToFlume(str);

        client.cleanUp();

    }

}

class MyRpcClientFacade {

    private RpcClient client;

    private String hostname;

    private int port;

    public void init(String hostname, int port) {

        // Setup the RPC connection

        this.hostname = hostname;

        this.port = port;

        this.client = RpcClientFactory.getDefaultInstance(hostname, port);

        // Use the following method to create a thrift client(instead of the above line);

        // this.client=RpcClientFactory.getThriftInstance(hostname,port);

    }

    public void sendDataToFlume(String data) {

        // Create a Flume Event object that encapsulate the sample data

        Event event = EventBuilder.withBody(data, Charset.forName("UTF-8"));

        System.out.println("--->");

        System.out.println(data);

        System.out.println(event);

        System.out.println("<--->");

/*

*     int getBatchSize();

    void append(Event var1) throws EventDeliveryException;

    void appendBatch(List<Event> var1) throws EventDeliveryException;

    boolean isActive();

    void close() throws FlumeException;

*

* */

        // Send the event

        try {

            this.client.append(event);

            System.out.println("<----------client.append(event)--------------->");

        } catch (EventDeliveryException e) {

            e.printStackTrace();

            System.out.println(e);

            //  clean up and recreate the client

            client.close();

            client = null;

            client = RpcClientFactory.getDefaultInstance(hostname, port);

        }

    }

    public void cleanUp() {

        // Close the RPC connection

        client.close();

    }

}

　　

【动手】

分布式日志Va

版本V a

待废除php，引入go网关

  protected function data2unifiedlog($data)
  {
      /*
      [{
      "headers" : {
          "timestamp" : "434324343",
           "host" : "random_host.example.com"
           },
"body" : "random_body"
},
{
    "headers" : {
    "namenode" : "namenode.example.com",
           "datanode" : "random_datanode.example.com"
           },
"body" : "really_random_body"
}]
         */
      $ch = curl_init();
      $now = date('y-m-d h:i:s', time()) . gethostname();
      $post_data_json = '[{
"headers" : {
           "timestamp" : "434324343",
           "host" : "random_host.example.com"
           },
"body" : \'str86677' . $now . '\'}]';
      $s = '{"hostname":' . gethostname() . ',"timestamp":"' . time() . '"';
      foreach ($data as $k => $v) {
          $s = $s . ',"' . $k . '":"' . $v . '"';
      }
      $s = $s . '}';
      $post_data_json = '[{
"headers" : {
           "timestamp" : "434324343",
           "host" : "random_host.example.com"
           },
"body" : \'' . $s . '\'}]';

      $curlopt_url = 'http://101.201.41.72:50000';
      curl_setopt($ch, CURLOPT_URL, $curlopt_url);
      curl_setopt($ch, CURLOPT_HEADER, TRUE);
      curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type:application/json'));
      curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data_json);
      curl_exec($ch);
      curl_close($ch);
  }

str8667718-11-02 04:23:28a
str8667718-11-02 04:23:28b
str8667718-11-02 04:23:28a
str8667718-11-02 04:23:28c
str8667718-11-02 04:23:28b
str8667718-11-02 04:23:29a
str8667718-11-02 04:23:29a
str8667718-11-02 04:23:29c
str8667718-11-02 04:23:29b
str8667718-11-02 04:23:29c
str8667718-11-02 04:23:29a
str8667718-11-02 04:23:29c
str8667718-11-02 04:23:29c
str8667718-11-02 04:23:29a
str8667718-11-02 04:23:29b
str8667718-11-02 04:23:29c
str8667718-11-02 04:23:30b
str8667718-11-02 04:23:30b
str8667718-11-02 04:23:30c
str8667718-11-02 04:23:30a
str8667718-11-02 04:23:30c
str8667718-11-02 04:23:30a

主机名

a1.sources=r1
a1.sinks=k1
a1.channels=c1

a1.sources.r1.type=http
a1.sources.r1.bind=0.0.0.0
a1.sources.r1.port=50000
a1.sources.r1.channels=c1

a1.sinks.k1.channel=c1
#a1.sinks.k1.type = com.product.FlumeApp
a1.sinks.k1.type = file_roll
a1.sinks.k1.sink.directory = /data/UnifiedLog/log
a1.sinks.k1.batchSize=1
#a1.sinks.k1.pathManager=%y%m%d%H%M%S
a1.sinks.k1.pathManager.extension=log
a1.sinks.k1.pathManager.prefix=webTrack
a1.sinks.k1.rollInterval=0
a1.sinks.k1.sink.serializer = text

a1.channels.c1.type=memory
a1.channels.c1.capacity=1000
a1.channels.c1.transactionCapacity=100
#a1.channels.c1.capacity=8
#a1.channels.c1.transactionCapacity=4

启动
export FlumeHome=/data/UnifiedLog/flume; $FlumeHome/bin/flume-ng agent -c $FlumeHome/conf/  -f  $FlumeHome/conf/httpSourceApp.conf -n a1 -Dflume.root.logger=INFO,console  -Xms10240m  -Xmx10240m ;

进程

root 23619 1.4 7.9 16559800 2608576 pts/3 Sl+ 15:31 1:05 /usr/java/jdk1.8.0_101/bin/java -Xmx20m -Dflume.root.logger=INFO,console -Xms10240m -Xmx10240m -cp /data/UnifiedLog/flume/conf:/data/UnifiedLog/flume/lib/*:/lib/* -Djava.library.path= org.apache.flume.node.Application -f /data/UnifiedLog/flume/conf/httpSourceApp.conf -n a1

端口

tcp 0 0 0.0.0.0:50000 0.0.0.0:* LISTEN 23619/java

　　日志目录

8.0K -rw-r--r-- 1 root root 5.3K Nov 2 16:32 1541143920191-102
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-103
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-104
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-105
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-106
8.0K -rw-r--r-- 1 root root 5.3K Nov 2 16:32 1541143920191-107
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-108
8.0K -rw-r--r-- 1 root root 5.3K Nov 2 16:32 1541143920191-109
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-110
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-111
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-112
8.0K -rw-r--r-- 1 root root 5.3K Nov 2 16:32 1541143920191-113
8.0K -rw-r--r-- 1 root root 5.3K Nov 2 16:32 1541143920191-114
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-115
8.0K -rw-r--r-- 1 root root 5.3K Nov 2 16:32 1541143920191-116
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-117
8.0K -rw-r--r-- 1 root root 8.0K Nov 2 16:32 1541143920191-118
8.0K -rw-r--r-- 1 root root 5.3K Nov 2 16:32 1541143920191-119
4.0K -rw-r--r-- 1 root root 2.7K Nov 2 16:32 1541143920191-120

【动手】

https://github.com/apache/flume/blob/c5168c902634e8ea1f25ec578ed0b7055b246d68/flume-ng-core/src/test/java/org/apache/flume/source/http/TestHTTPSource.java

@Test
  public void testSimpleUTF16() throws IOException, InterruptedException {
   
  StringEntity input = new StringEntity("[{\"headers\":{\"a\": \"b\"},\"body\": \"random_body\"},"
  + "{\"headers\":{\"e\": \"f\"},\"body\": \"random_body2\"}]", "UTF-16");
  input.setContentType("application/json; charset=utf-16");
  postRequest.setEntity(input);
   
  HttpResponse response = httpClient.execute(postRequest);
   
  Assert.assertEquals(HttpServletResponse.SC_OK,
  response.getStatusLine().getStatusCode());
  Transaction tx = httpChannel.getTransaction();
  tx.begin();
  Event e = httpChannel.take();
  Assert.assertNotNull(e);
  Assert.assertEquals("b", e.getHeaders().get("a"));
  Assert.assertEquals("random_body", new String(e.getBody(), "UTF-16"));
   
  e = httpChannel.take();
  Assert.assertNotNull(e);
  Assert.assertEquals("f", e.getHeaders().get("e"));
  Assert.assertEquals("random_body2", new String(e.getBody(), "UTF-16"));
  tx.commit();
  tx.close();
  }
   
  @Test
  public void testInvalid() throws Exception {
  StringEntity input = new StringEntity("[{\"a\": \"b\",[\"d\":\"e\"],\"body\": \"random_body\"},"
  + "{\"e\": \"f\",\"body\": \"random_body2\"}]");
  input.setContentType("application/json");
  postRequest.setEntity(input);
  HttpResponse response = httpClient.execute(postRequest);
   
  Assert.assertEquals(HttpServletResponse.SC_BAD_REQUEST,
  response.getStatusLine().getStatusCode());
  SourceCounter sc = (SourceCounter) Whitebox.getInternalState(httpSource, "sourceCounter");
  Assert.assertEquals(1, sc.getEventReadFail());
   
  }

github  查测试用例

headers  application/json

body [{"headers" : {"a":"b", "c":"d"},"body": "random_body"}, {"headers" : {"e": "f"},"body": "random_body2"}]

https://stackoverflow.com/questions/34765810/flume-httpsource-refuses-json-body-due-to-malform

https://archive.cloudera.com/cdh5/cdh/5/flume-ng/apidocs/org/apache/flume/source/http/JSONHandler.html

org.apache.flume.source.http

Class JSONHandler

  • All Implemented Interfaces:
    Configurable, HTTPSourceHandler

    public class JSONHandler
    
extends Object
    
implements HTTPSourceHandler
    JSONHandler for HTTPSource that accepts an array of events. This handler throws exception if the deserialization fails because of bad format or any other reason. Each event must be encoded as a map with two key-value pairs.

    1. headers - the key for this key-value pair is "headers". The value for this key is another map, which represent the event headers. These headers are inserted into the Flume event as is.

    2. body - The body is a string which represents the body of the event. The key for this key-value pair is "body". All key-value pairs are considered to be headers. An example:

    [{"headers" : {"a":"b", "c":"d"},"body": "random_body"}, {"headers" : {"e": "f"},"body": "random_body2"}]

    would be interpreted as the following two flume events:

    * Event with body: "random_body" (in UTF-8/UTF-16/UTF-32 encoded bytes) and headers : (a:b, c:d)

    * Event with body: "random_body2" (in UTF-8/UTF-16/UTF-32 encoded bytes) and headers : (e:f)

    The charset of the body is read from the request and used. If no charset is set in the request, then the charset is assumed to be JSON's default - UTF-8. The JSON handler supports UTF-8, UTF-16 and UTF-32. To set the charset, the request must have content type specified as "application/json; charset=UTF-8" (replace UTF-8 with UTF-16 or UTF-32 as required). One way to create an event in the format expected by this handler, is to use JSONEvent and use Gson to create the JSON string using the Gson.toJson(java.lang.Object, java.lang.reflect.Type) method. The type token to pass as the 2nd argument of this method for list of events can be created by:

    Type type = new TypeToken<List<JSONEvent>>() {}.getType();

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