Class: PDTP::Server::StatusHandler

Inherits:
Mongrel::HttpHandler
  • Object
show all
Defined in:
lib/pdtp/server/status_handler.rb

Overview

set up the mongrel server for serving the stats page

Instance Method Summary collapse

Constructor Details

#initialize(dispatcher) ⇒ StatusHandler

Returns a new instance of StatusHandler.



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# File 'lib/pdtp/server/status_handler.rb', line 33

def initialize(dispatcher)
  @dispatcher = dispatcher
end

Instance Method Details

#generate_html_stats ⇒ Object

builds an html page with information about the server’s internal workings



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# File 'lib/pdtp/server/status_handler.rb', line 49

def generate_html_stats
  s = ERB.new <<EOF
<html><head><title>DistribuStream Status</title></head>
<body>
<h1>DistribuStream Status</h1>
Time=<%= Time.now %><br> Connected Clients=<%= @dispatcher.connections.size %>
<center><table border="1">
<tr><th>Client</th><th>Transfers</th><th>Files</th></tr>
<% @dispatcher.connections.each do |c| %>
  <tr><td>
  <% if c.file_service? %>
    <b>File Service</b>
  <% else %>
    <%= @dispatcher.connection_name(c) %>
  <% end %>
  <% host, port = c.get_peer_info %>
  <br><%= host %>:<%= port %>
  </td>
  <td>
  <%
  @dispatcher.client_info(c).transfers.each do |key,t|
    if c==t.giver
type="UP: "
peer=t.taker
    else
type="DOWN: "
peer=t.giver
    end
    %>
    <%= type %> id=<%= t.transfer_id %><br>
    <%
  end
  %>
  </td>
  <td>
  <%
  @dispatcher.client_info(c).chunk_info.get_file_stats.each do |fs|
    %>
    <%= fs.url %> size=<%= fs.file_chunks %> req=<%= fs.chunks_requested %>
    prov=<%= fs.chunks_provided %> transf=<%= fs.chunks_transferring %><br>    
    <%
  end      
  %>
  </td></tr>
  <%
end
%>
</table>
</body></html>
EOF
  s.result binding
end

#process(request, response) ⇒ Object

process an incoming request to the admin page



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# File 'lib/pdtp/server/status_handler.rb', line 38

def process(request, response)
  response.start(200) do |head, out|
    out.write begin
      generate_html_stats
    rescue Exception => e
      "Exception: #{e}\n#{e.backtrace.join("\n")}"
    end
  end    
end