Saturday, 7 October 2017

CSV Comparision


Here is the explanatory video and following method :




public class compareCSV {

/**
* @param args
* @throws IOException
         * @author : Aman Saraf Jain
*/
public static void main(String[] args) throws IOException {

HashSet<String> f1 = new HashSet<String>(FileUtils.readLines(new File("C:\\Users\\Aman\\Desktop\\demo\\1.csv")));
HashSet<String> f2 = new HashSet<String>(FileUtils.readLines(new File("C:\\Users\\Aman\\Desktop\\demo\\2.csv")));
f1.removeAll(f2); // f1 now contains only the lines which are not in f2

System.out.println(f1.toString());

}

}

Saturday, 22 April 2017

Use of Log4j in your Java Program


Download Sample Project from here.

Steps to use log4j :

1.) Download log4j dependency.(included in sample project)
2.) Download log4j.properties (included in sample project)

Create Java Program:

package com.asj;

import org.apache.log4j.Logger;

public class LoggerDemo {
/**
* @created by Aman
*/
public static Logger logger = Logger.getLogger(LoggerDemo.class);

public static void main(String[] args) {
logger.info("Hello!! you are in info log");

logger.warn("Hello!! you are in warn log");

logger.error("Hello!! you are in error log");

logger.debug("Hello!! you are in debug log");
}

}

Monday, 2 February 2015

Extract Hbase table through Mapreduce and print table data in to hdfs file (Sample program)

Create Hbase Table


create 'test1', 'cf1'
put 'test1', '20130101#1', 'cf1:sales', '100'
put 'test1', '20130101#2', 'cf1:sales', '110'
put 'test1', '20130102#1', 'cf1:sales', '200'
put 'test1', '20130102#2', 'cf1:sales', '210'

Create Java project with 3 files and include all Hbase required Jars:-

testDriver.java :

package TableDataHdfsFile;

import java.io.File;
import java.io.IOException;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.commons.io.
FileUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;



public class testDriver
{   
      static String FilePath = "/home/admin/Test/mysummary";
      public static void main(String[] args) throws Exception
      {
          File file = new File(FilePath);
          if (file.exists())
          {
              FileUtils.cleanDirectory(file); //clean out directory (this is optional -- but good know)
              FileUtils.forceDelete(file); //delete directory
          }

        FileSystem fs = FileSystem.get(config);
          if (fs.exists( new Path(FilePath)))
          {
              fs.delete(new Path(FilePath), true); // delete file, true for recursive
          }
          Configuration config = HBaseConfiguration.create();
          Job job = Job.getInstance(config);
          job.setJobName("ExampleSummaryToFile");
          job.setJarByClass(testDriver.class);     // class that contains mapper and reducer

          Scan scan = new Scan();
          scan.setCaching(500);        // 1 is the default in Scan, which will be bad for MapReduce jobs
          scan.setCacheBlocks(false);  // don't set to true for MR jobs
          // set other scan attrs

          TableMapReduceUtil.initTableMapperJob(
                  "test1",        // input table
                  scan,               // Scan instance to control CF and attribute selection
                  testMapper.class,     // mapper class
                  Text.class,         // mapper output key
                  IntWritable.class,  // mapper output value
                  job);
          System.out.println(job.getJobName());
          job.setReducerClass(testReducer.class);    // reducer class
          job.setNumReduceTasks(1);    // at least one, adjust as required
         
        

          FileOutputFormat.setOutputPath(job, new Path(FilePath));  // adjust directories as required

          boolean b = job.waitForCompletion(true);
          if (!b) {
                  throw new IOException("error with job!");
          }
      }
}



testMapper.java :-

package TableDataHdfsFile;

import java.io.IOException;

import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.mapreduce.TableMapper;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;


public  class testMapper extends TableMapper<Text, IntWritable>  {
    public static final byte[] CF = "cf".getBytes();

    private final IntWritable ONE = new IntWritable(1);
       private Text text = new Text();

       public void map(ImmutableBytesWritable row, Result value, Context context) throws IOException, InterruptedException {
          // byte[] bSales = columns.getValue(Bytes.toBytes("cf1"), Bytes.toBytes("sales"));
            String val = new String(value.getValue(Bytes.toBytes("cf1"), Bytes.toBytes("sales")));
            text.set(val);     // we can only emit Writables...
            context.write(text, ONE);
       }
}

testReducer.java :-

package TableDataHdfsFile;

import java.io.IOException;
import org.apache.hadoop.io.
IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;



public class testReducer extends Reducer<Text, IntWritable, Text, IntWritable>  {

    public void reduce(Text key, Iterable<IntWritable> values, Context context) throws IOException, InterruptedException {
            int i = 0;
            for (IntWritable val : values) {
                    i += val.get();
            }
            context.write(key, new IntWritable(i));
    }
}

//Create a jar and run basic program given above , we may parametrize this program  also.

// Done

Saturday, 8 November 2014

Invoke Maven Project by - Jenkins !!



How to invoke maven project through Jenkins steps are below :-

1. Download and install jenkins.

2. Run jenkins.war by following command :-

java -jar jenkins.war --httpPort=9090
If you want to use https use the following command:
java -jar jenkins.war --httpsPort=9090

3. Create Jenkins Job:-

Create TestMaven Job


before creating job ensure that you set jdk path in jenkins configuration.


4. Set your POM.xml file path and build jenkins job :-









Done :)

For Creating Maven Project :- Link





Friday, 7 November 2014

How To Create Maven Project !!


Here is the way to create way to create maven project :-

1.) Install Maven in your latest eclipse.

2.) Create Maven Project.

3.) Create Below Java file in package com under src/main/java -

package com;
import javax.swing.JOptionPane;

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;

public class TestClass {
   
     public static void main(String[] args) throws InterruptedException {
            // Create a new instance of the firefox driver
            // Notice that the remainder of the code relies on the interface,
            // not the implementation.
            WebDriver driver = new FirefoxDriver();

            // And now use this to visit Google
            driver.get("http://www.google.com");

            // Find the text input element by its name
            WebElement element = driver.findElement(By.name("q"));

            // Enter something to search for
            element.sendKeys("cheese!");

            // Now submit the form. WebDriver will find the form for us from the element
            element.submit();

            Thread.sleep(5000);
            // Check the title of the page
            JOptionPane.showMessageDialog(null, "Page title is: " + driver.getTitle());
                
            driver.quit();
        }

}

4.)  Edit your pom.xml

Here is edited  pom.xml :-

<project
    xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>kepler_maven</groupId>
    <artifactId>kepler_maven</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <dependencies>
        <dependency>
            <groupId>org.seleniumhq.selenium</groupId>
            <artifactId>selenium-java</artifactId>
            <version>2.44.0</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.1.1</version>
                <executions>
                    <execution>
                        <phase>test</phase>
                        <goals>
                            <goal>java</goal>
                        </goals>
                        <configuration>
                            <mainClass>com.TestClass</mainClass>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

5.) Run pom.xml as Maven Install

6.) Here is the complete zipped project Maven Sample Project

Done !!





Thursday, 16 October 2014

Automatic File Download Selenium Java



Below code snippet for Firefox :-

Automatic File Download Selenium Java

---------------------------------------------------START-----------------------------------------------------

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.firefox.FirefoxProfile;
import atu.utils.windows.handler.exceptions.WindowsHandlerException;


public class autoDownLoad {

public static void main(String[] args) throws WindowsHandlerException, InterruptedException {

 FirefoxProfile profile = new FirefoxProfile();
 String path="d:\\downloads123";
 profile.setPreference("browser.download.folderList", 2);
 profile.setPreference("browser.download.dir", path);
 profile.setPreference("browser.download.manager.alertOnEXEOpen", false);
 profile.setPreference("browser.helperApps.neverAsk.saveToDisk", "application/msword,application/csv,text/csv,image/png ,image/jpeg, application/pdf, text/html,text/plain,application/octet-stream");
 profile.setPreference("browser.download.manager.showWhenStarting", false);
 profile.setPreference("browser.download.manager.focusWhenStarting", false); 
 profile.setPreference("browser.download.useDownloadDir", true);
 profile.setPreference("browser.helperApps.alwaysAsk.force", false);
 profile.setPreference("browser.download.manager.alertOnEXEOpen", false);
 profile.setPreference("browser.download.manager.closeWhenDone", false);
 profile.setPreference("browser.download.manager.showAlertOnComplete", false);
 profile.setPreference("browser.download.manager.useWindow", false);
 profile.setPreference("browser.download.manager.showWhenStarting",false);
 profile.setPreference("services.sync.prefs.sync.browser.download.manager.showWhenStarting", false);
 profile.setPreference("pdfjs.disabled", true);
 WebDriver driver = new FirefoxDriver(profile);
driver.get(YOUR URL);
}

}


More Type--- > MIME TYPES

-----------------------------------------------------END------------------------------------------------------

Monday, 22 September 2014

Loggers In Ruby



require 'logger'

logger = Logger.new($stdout)
logger.warn("This is a warning")
logger.info("This is an info")


//$stdout redirects all logs to console. If you want to redirect all this to a file then //need to initialize $stdout='/home/Aman_Test/log.txt', 'w'