samples/sample_keys.html.erb

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/>
    <meta name="description" content="Display Consul information"/>
    <meta name="author" content="Criteo"/>
    <meta http-equiv="refresh" content="<%= param('refresh', ENV['REFRESH'] || '10') %>"/>
    <title>This page displays random K/V every 10 seconds %></title>
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    <style>
      body {
        padding-top: 5rem;
      }
      .check {
        transition: opacity 1s ease-out;
      }
    </style>
    <style id="css-states">
    </style>
  </head>
  <body>
<main class="container">
<h1>Keys example</h1>
<div>
This example shows how to use kv() results. It requires at least one key if the Consul's KV in order to display something.
</div>
<%
  result = kv('', keys:true)
  num_keys = result.count
  # We refresh key every 10 seconds only
  key_index = (Time.now.to_i / 10)
  prng = Random.new
  if num_keys > 0
    key_to_display = result[key_index % num_keys]
  end
%>
<div>
<h2>Using a single key</h2>
<div>Found <%= num_keys %> keys in KV/Store</div>
<%
if key_to_display
%>
  <h1>Display a random single key using helpers</h1>
  <div>
    <h3>kv('<%= key_to_display %>').get_value :</h3>
    <pre><%= kv(key_to_display).get_value %></pre>
  </div>
  <div>
    <h3>kv('<%= key_to_display %>').get_value_decoded</h3>
    <pre><%= 
  ERB::Util.html_escape(kv(key_to_display).get_value_decoded)
  %></pre>
  </div>
  <div>
    <h3>kv('<%= key_to_display %>').get_value_json(catch_errors: true)</h3>
    <code><% 
  # catch_errors: true will return nil if data cannot be converted to JSON
  json = kv(key_to_display).get_value_json(catch_errors: true)
  %><%= (json ? ERB::Util.html_escape(json) : 'No Valid JSON Data') %></code>
  </div>
<%
end
%>
</div>
<div>
<h2>Listing all keys (without their values)</h2>
<ul>
<%
result.each do |key_name|
%>
  <li><%= key_name %></li>
<%
end
%>
</ul>
</div>
<div>
<h2>Listing 10 first keys (with their values)</h2>
<ol>
<% kv_values = kv('', recurse: true)
   index = 0
   kv_values.each do |tuple|
    index += 1
    break if index > 10
    key_name = tuple['Key']
%>
    <li><%= key_name %>: <code><%= kv_values.get_value_decoded(key_name) %></code></li>
<%
end
%>
</ol>
</div>
</main>
</body>
</html>