Server status

Each project should export its server status in two forms:

• URL/server_status.php: human-readable (web page).
• URL/server_status.php?xml=1: XML format, as follows:

  <server_status>
      <update_time>1127772607</update_time>
      <daemon_status>
          <daemon>
              <host>jocelyn</host>
              <command>BOINC database</command>
              <status>running</status>
          </daemon>
          <daemon>
              <host>castelli</host>
              <command>master science database</command>
              <status>running</status>
          </daemon>
          <daemon>
              <host>kryten</host>
              <command>sah_validate4</command>
              <status>running</status>
          </daemon>
          ...
      </daemon_status>
      <database_file_states>
          <results_ready_to_send>563389</results_ready_to_send>
          <results_in_progress>1198237</results_in_progress>
          <workunits_waiting_for_validation>19</workunits_waiting_for_validation>
          <workunits_waiting_for_assimilation>16</workunits_waiting_for_assimilation>
          <workunits_waiting_for_deletion>0</workunits_waiting_for_deletion>
          <results_waiting_for_deletion>0</results_waiting_for_deletion>
          <transitioner_backlog_hours>-0.0002777</transitioner_backlog_hours>
      </database_file_states>
  </server_status>
  

There are two ways to do this:

1. Copy html/ops/sample_server_status.php to html/user/server_status.php. This works as long as you don't need any customization, and the DB queries in the page only take a few seconds (the page is cached, so they are done infrequently).
2. Write a periodic script that generates the 2 pages as files, and put a script in user/server_status.php that echoes one file or the other.