AwsGeek/index.html

## index.html
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>AWS Price List API</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.10.2.js"></script>
  <script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
  <style>
    body { font-size: 62.5%; }
    label, input { display:block; }
    input.text { margin-bottom:12px; width:95%; padding: .4em; }
    fieldset { padding:0; border:0; margin-top:25px; }
    div#servers-container { float:left; margin: 20px 0; }
    div#servers-container table { margin: 1em 0; border-collapse: collapse; width: 100%; }
    div#servers-container table td, div#servers-container table th { border: 1px solid #eee; padding: .6em 10px; text-align: left; }
    .ui-dialog .ui-state-error { padding: .3em; }
    .validateTips { border: 1px solid transparent; padding: 0.3em; }
    label {
      display: block;
      margin: 30px 0 0 0;
    }
    select {
      width: 200px;
    }
    .overflow {
      height: 200px;
    }
  </style>
  <script>

  region = "US West (Oregon)"
  instances = {}

  function update() {
      c = $("#cores").val().trim();
      if (!c) {
        return;
      }
      m = $("#memory").val().trim();
      if (!m) {
        return;
      }
      region = $("#regions option:selected").text();

      scored = [];
      max = 0.0

      // Score each instance
      for(var i=0; i<instances[region].length; i++) {
        instance = instances[region][i];
        dc = Math.log2(instance['vcpu']/c);
        dm = Math.log2(instance['memory']/m);

        if ((dc > -1) && (dm > -1)) {

          score = Math.sqrt(dc*dc + dm*dm);
          max = Math.max(max, score);

          instance['score'] = score;
          scored.push(instance);
        }
      }

      // Normalize scores
      for(var i=0; i<scored.length; i++) {
        scored[i]['score'] = ((1.0 - scored[i]['score']/max) * 100).toFixed(2);
      }

      // Sort by score
      sorted = scored.sort(function(a, b){return b['score']-a['score']});
      $("#instances tbody").empty();
        for(var i=0; i<sorted.length; i++) {
          instance = scored[i];
          $( "#instances tbody" ).append( "<tr class=\"server\">" +
            "<td>" + sorted[i]['score'] + "</td>" +
            "<td>" + sorted[i]["type"] + "</td>" +
            "<td>" + sorted[i]["vcpu"] + "</td>" +
            "<td>" + sorted[i]["memory"] + "</td>" +
            "<td>" + sorted[i]["cost"][0] + "</td>" +
          "</tr>" );
        };
  }

  $(function() {

    $("#regions").selectmenu();

    $('#regions').on('selectmenuchange', function(e) {
      update();
    });

    $('#cores, #memory').on('change', function(e) {
      update();
    });

    $.ajax({
        url: "prices.json",
        context: $(this)
      }).success(function(resp) {
        instances = resp["instances"];

        for (var key in instances) {
          if (instances.hasOwnProperty(key)) {
            $("#regions").append("<option>" + key + "</option>");
          }
        }
        $('#regions').val(region);
        $("#regions").selectmenu("refresh");

        $('#published').text('AWS Price List API Example - Price date ' + resp["published"]);
        $('#generated').text('Generated on ' + resp["created"]);

        update();
      });

  });
  </script>
</head>
<body>
<h1 id="published">AWS Price List API Example</h1>
<h3 id="generated">AWS Price List API Example</h3>
<div id="servers-container" class="ui-widget">
  <table id="servers" class="ui-widget ui-widget-content">
    <thead>
      <tr class="ui-widget-header ">
        <th>Region</th>
        <th>Cores</th>
        <th>Memory (GB)</th>
      </tr>
    </thead>
    <tbody>
      <td><select name="regions" id="regions" class="text ui-widget-content ui-corner-all"></select></td>
      <td><input type="text" name="cores" id="cores" class="text ui-widget-content ui-corner-all" value="1"></td>
      <td><input type="text" name="memory" id="memory" class="text ui-widget-content ui-corner-all" value="2"></td>
    </tbody>
  </table>
  <table id="instances" class="ui-widget ui-widget-content">
    <thead>
      <tr class="ui-widget-header ">
        <th>Score</th>
        <th>Type</th>
        <th>Cores</th>
        <th>Memory (GB)</th>
        <th>Price</th>
      </tr>
    </thead>
    <tbody>
    </tbody>
  </table>
</div>


</body>
</html>

## lambda_function.py
import json, boto3, time, requests

def lambda_handler(event, context):
  if event['offerCode'] == 'AmazonEC2':
    offer = download_offer(event)
    prices = extract_prices(offer)
    upload_prices(prices)

def download_offer(event):
  response = requests.get(event['url']['json'])
  return json.loads(response.text)

def filter_products(products):
  filtered = []

  # Only interested in shared tenancy, linux instances
  for sku, product in products:
    a = product['attributes']
    if not ('locationType' in a and
            'location' in a and
            'tenancy' in a and
            a['tenancy'] == "Shared" and
            a['locationType'] == 'AWS Region' and
            a['operatingSystem'] == 'Linux'):
      continue

    a['sku'] = sku
    filtered.append(a)

  return filtered

def extract_prices(offer):
  terms = offer['terms']
  products = offer['products'].items()

  instances = {}
  for a in filter_products(products):
    term = terms['OnDemand'][a['sku']].items()[0][1]
    cost = [float(term['priceDimensions'].items()[0][1]['pricePerUnit']['USD'])]

    info = {"type" : a['instanceType'], "vcpu" : a['vcpu'],
            "memory" : a['memory'].split(" ")[0], "cost" : cost}

    if not a['location'] in instances:
      instances[a['location']] = []

    instances[a['location']].append(info)

  return {'created': time.strftime("%c"), 'published': offer['publicationDate'],
          'instances': instances}

def upload_prices(prices):
  s3 = boto3.client('s3')
  s3.put_object(ACL='public-read', Body=json.dumps(prices), ContentType='application/json',
                Bucket='<bucket-name>', Key='prices.json')

## prices.json
{"instances": {}, "published": "6/10/2016", "created": "6/10/2016"}
	<!doctype html>
	<html lang="en">
	<head>
	<meta charset="utf-8">
	<title>AWS Price List API</title>
	<link rel="stylesheet" href="//code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
	<script src="//code.jquery.com/jquery-1.10.2.js"></script>
	<script src="//code.jquery.com/ui/1.11.4/jquery-ui.js"></script>
	<style>
	body { font-size: 62.5%; }
	label, input { display:block; }
	input.text { margin-bottom:12px; width:95%; padding: .4em; }
	fieldset { padding:0; border:0; margin-top:25px; }
	div#servers-container { float:left; margin: 20px 0; }
	div#servers-container table { margin: 1em 0; border-collapse: collapse; width: 100%; }
	div#servers-container table td, div#servers-container table th { border: 1px solid #eee; padding: .6em 10px; text-align: left; }
	.ui-dialog .ui-state-error { padding: .3em; }
	.validateTips { border: 1px solid transparent; padding: 0.3em; }
	label {
	display: block;
	margin: 30px 0 0 0;
	}
	select {
	width: 200px;
	}
	.overflow {
	height: 200px;
	}
	</style>
	<script>

	region = "US West (Oregon)"
	instances = {}

	function update() {
	c = $("#cores").val().trim();
	if (!c) {
	return;
	}
	m = $("#memory").val().trim();
	if (!m) {
	return;
	}
	region = $("#regions option:selected").text();

	scored = [];
	max = 0.0

	// Score each instance
	for(var i=0; i<instances[region].length; i++) {
	instance = instances[region][i];
	dc = Math.log2(instance['vcpu']/c);
	dm = Math.log2(instance['memory']/m);

	if ((dc > -1) && (dm > -1)) {

	score = Math.sqrt(dcdc + dmdm);
	max = Math.max(max, score);

	instance['score'] = score;
	scored.push(instance);
	}
	}

	// Normalize scores
	for(var i=0; i<scored.length; i++) {
	scored[i]['score'] = ((1.0 - scored[i]['score']/max) * 100).toFixed(2);
	}

	// Sort by score
	sorted = scored.sort(function(a, b){return b['score']-a['score']});
	$("#instances tbody").empty();
	for(var i=0; i<sorted.length; i++) {
	instance = scored[i];
	$( "#instances tbody" ).append( "<tr class=\"server\">" +
	"<td>" + sorted[i]['score'] + "</td>" +
	"<td>" + sorted[i]["type"] + "</td>" +
	"<td>" + sorted[i]["vcpu"] + "</td>" +
	"<td>" + sorted[i]["memory"] + "</td>" +
	"<td>" + sorted[i]["cost"][0] + "</td>" +
	"</tr>" );
	};
	}

	$(function() {

	$("#regions").selectmenu();

	$('#regions').on('selectmenuchange', function(e) {
	update();
	});

	$('#cores, #memory').on('change', function(e) {
	update();
	});

	$.ajax({
	url: "prices.json",
	context: $(this)
	}).success(function(resp) {
	instances = resp["instances"];

	for (var key in instances) {
	if (instances.hasOwnProperty(key)) {
	$("#regions").append("<option>" + key + "</option>");
	}
	}
	$('#regions').val(region);
	$("#regions").selectmenu("refresh");

	$('#published').text('AWS Price List API Example - Price date ' + resp["published"]);
	$('#generated').text('Generated on ' + resp["created"]);

	update();
	});

	});
	</script>
	</head>
	<body>
	<h1 id="published">AWS Price List API Example</h1>
	<h3 id="generated">AWS Price List API Example</h3>
	<div id="servers-container" class="ui-widget">
	<table id="servers" class="ui-widget ui-widget-content">
	<thead>
	<tr class="ui-widget-header ">
	<th>Region</th>
	<th>Cores</th>
	<th>Memory (GB)</th>
	</tr>
	</thead>
	<tbody>
	<td><select name="regions" id="regions" class="text ui-widget-content ui-corner-all"></select></td>
	<td><input type="text" name="cores" id="cores" class="text ui-widget-content ui-corner-all" value="1"></td>
	<td><input type="text" name="memory" id="memory" class="text ui-widget-content ui-corner-all" value="2"></td>
	</tbody>
	</table>
	<table id="instances" class="ui-widget ui-widget-content">
	<thead>
	<tr class="ui-widget-header ">
	<th>Score</th>
	<th>Type</th>
	<th>Cores</th>
	<th>Memory (GB)</th>
	<th>Price</th>
	</tr>
	</thead>
	<tbody>
	</tbody>
	</table>
	</div>


	</body>
	</html>
	import json, boto3, time, requests

	def lambda_handler(event, context):
	if event['offerCode'] == 'AmazonEC2':
	offer = download_offer(event)
	prices = extract_prices(offer)
	upload_prices(prices)

	def download_offer(event):
	response = requests.get(event['url']['json'])
	return json.loads(response.text)

	def filter_products(products):
	filtered = []

	# Only interested in shared tenancy, linux instances
	for sku, product in products:
	a = product['attributes']
	if not ('locationType' in a and
	'location' in a and
	'tenancy' in a and
	a['tenancy'] == "Shared" and
	a['locationType'] == 'AWS Region' and
	a['operatingSystem'] == 'Linux'):
	continue

	a['sku'] = sku
	filtered.append(a)

	return filtered

	def extract_prices(offer):
	terms = offer['terms']
	products = offer['products'].items()

	instances = {}
	for a in filter_products(products):
	term = terms['OnDemand'][a['sku']].items()[0][1]
	cost = [float(term['priceDimensions'].items()[0][1]['pricePerUnit']['USD'])]

	info = {"type" : a['instanceType'], "vcpu" : a['vcpu'],
	"memory" : a['memory'].split(" ")[0], "cost" : cost}

	if not a['location'] in instances:
	instances[a['location']] = []

	instances[a['location']].append(info)

	return {'created': time.strftime("%c"), 'published': offer['publicationDate'],
	'instances': instances}

	def upload_prices(prices):
	s3 = boto3.client('s3')
	s3.put_object(ACL='public-read', Body=json.dumps(prices), ContentType='application/json',
	Bucket='<bucket-name>', Key='prices.json')