Getting Started with Avro

Question

I want to get started with using Avro with Map Reduce. Can Someone suggest a good tutorial / example to get started with. I couldnt find much through the internet search.

Answer 1

javascript + jquery : https://codepen.io/GentjanLikaj/pen/dyPXLXX

$( "#btn1" ).click(function() {
	$( "table" ).remove();
	var text1 = document.getElementById('text').value;
	var text1=text1.replace(/(\r\n|\n|\r)/gm,"");
	var sep = document.getElementById('sep').value;
	var aray = text1.split(sep);
	var formato = 'stringintdatedatetimefloatvarchar';
	var univoco = ' 
';
	var null1 = ' 
';
	var html = '';
	$.each(aray, function(i, val) {
		html += '';
	});
	html += '
ColummnName
Format
  
Null
   
  
 
' + val + '
' + formato + '
' + null1 + '
';	
	$("#table").append(html);
});

$( "#btn2").click(function() {
	$( "#avro" ).empty();
	var myRows = {myRows:[]};
	var $th = $('#tbl th');
	$('#tbl tbody tr').each(function(i, tr){
		var obj = {}, 
		$tds = $(tr).find('td');
		$td1 = $(tr).find('select.form').children("option:selected");
		$tds2 = $(tr).find('#checkbox');
		$tds3 = $(tr).find('#null');
		$th.each(function(){
			obj['name'] = $tds.eq(0).text();
			var type=$td1.eq(0).val();
			var nullv=$tds3.eq(0).is(':checked');
			if (type=='date') {
				type={type:"int", logicalType:"date"};
			}else if (nullv == true) {
				type = [type ,'null' ];
			}
			else{
				type;
			}
			obj['type'] = type;
			// obj['univoco'] = $tds2.eq(0).is(':checked');
			// obj['null'] = $tds3.eq(0).is(':checked');
		});
		myRows.myRows.push(obj);		
	});	
	console.log(JSON.stringify(myRows));
	var header = '{ 
     "type": "record"  ,  
       "namespace": "Mezzora" ,  
      "name": "ReportDSL" ,  
        "fields": [ 
';
	$('#avro').append(header);
	text ='          '+JSON.stringify(myRows.myRows[0])  +"
";
	$('#avro').append(text);
	var i;
	for (i = 1; i < myRows.myRows.length; i++) {
		text ='           ,'+ JSON.stringify(myRows.myRows[i])  +"
";
		$('#avro').append(text);
	}
	var footer = '         ] 
 }';
	$('#avro').append(footer);	
});

$( "#btn3").click(function() {
	$( "#sql" ).empty();
	var myRows = {myRows:[]};
	var $th = $('#tbl th');
	$('#tbl tbody tr').each(function(i, tr){
		var obj = {}, 
		$tds = $(tr).find('td');
		$td1 = $(tr).find('select.form').children("option:selected");
		$tds2 = $(tr).find('#checkbox');
		$tds3 = $(tr).find('#null');
		$th.each(function(){
			obj['name'] = $tds.eq(0).text();
			var type=$td1.eq(0).val();
			var nullv=$tds3.eq(0).is(':checked');
			if (nullv == false) {
				type= type +' not null';
			}else if (nullv == true) {
				type = type +' null' ;
			}else{
				if (type == 'string') {
					type = 'varchar(50)';
				}else{
					type;
				}
			}			
			obj['type'] = type;
			// obj['univoco'] = $tds2.eq(0).is(':checked');
			// obj['null'] = $tds3.eq(0).is(':checked');
		});
		myRows.myRows.push(obj);		
	});	
	console.log(JSON.stringify(myRows));
	var header = 'CREATE TABLE [schema].[tblName]   ( 
';
	$('#sql').append(header);
	var i;
	for (i = 0; i < myRows.myRows.length; i++) {
		text ='          '+ JSON.stringify(myRows.myRows[i].name).replace('\"',' ').replace('\"',' ') +JSON.stringify(myRows.myRows[i].type).replace('\"',' ').replace('\"',' ')   +", 
";
		$('#sql').append(text);
	}
	var footer = ');';
	$('#sql').append(footer);	
});

.parent {
	display: grid;
	grid-template-columns: repeat(10, 1fr);
	grid-template-rows: repeat(12, 1fr);
	grid-column-gap: 20px;
	grid-row-gap: 0px;
	}
	
	.div1 { grid-area: 1 / 2 / 2 / 11; }
	.div2 { grid-area: 5 / 6 / 6 / 7; }
	.div3 { grid-area: 3 / 1 / 5 / 12; }
	.div4 { grid-area: 2 / 1 / 3 / 2; }
	.div5 { grid-area: 6 / 1 / 13 / 4; }
	.div6 { grid-area: 6 / 4 / 13 / 8; }
	.div7 { grid-area: 6 / 8 / 13 / 12; }
	
	.div6 , .div7{

		border: 1px solid black;
		margin-right: 10px;
	}

	#btn1{
		margin-bottom: 30px;
	}

	
	
	
	
  
  


	
Insert the text and the separator and press the button: 
	

		

		

		

      
       
    
		
Separatetor 
		

			
			
			

		
		

			
Avro Format
			

			
		
		

			
SQL Create