function _linkchecker_add_node_links in Link checker 6.2

Same name and namespace in other branches

1. 5.2 linkchecker.module \_linkchecker_add_node_links()
2. 7 linkchecker.module \_linkchecker_add_node_links()

Add node links to database.

Parameters

$node: The fully populated node object.

$skip_missing_links_detection: To prevent endless batch loops the value need to be TRUE. With FALSE the need for content re-scans is detected by the number of missing links.

3 calls to _linkchecker_add_node_links()

linkchecker_nodeapi in ./linkchecker.module

_linkchecker_batch_node_import_op in includes/linkchecker.batch.inc

Batch operation: Scan ony by one node for links.

_linkchecker_batch_single_node_import_op in includes/linkchecker.batch.inc

File

./linkchecker.module, line 991

This module periodically check links in given node types, blocks, cck fields, etc.

Code

function _linkchecker_add_node_links($node, $skip_missing_links_detection = FALSE) {
  $links = array_keys(_linkchecker_extract_node_links($node));

  // Node have links.
  if (!empty($links)) {

    // Remove all links from the links array already in the database
    // and only add missing links to database.
    $missing_links = _linkchecker_node_links_missing($node->nid, $links);

    // Only add links to database that do not exists.
    $i = 0;
    foreach ($missing_links as $url) {
      $urlhash = md5($url);
      $link = db_fetch_object(db_query("SELECT lid FROM {linkchecker_links} WHERE urlhash = '%s'", $urlhash));
      if (!$link) {
        $link = new stdClass();
        $link->urlhash = $urlhash;
        $link->url = $url;
        $link->status = _linkchecker_link_check_status_filter($url);
        drupal_write_record('linkchecker_links', $link);
      }
      db_query("INSERT INTO {linkchecker_nodes} (nid, lid) VALUES (%d, %d)", $node->nid, $link->lid);

      // Break processing if max links limit per run has been reached.
      $i++;
      if ($i >= LINKCHECKER_SCAN_MAX_LINKS_PER_RUN) {
        break;
      }
    }

    // The first chunk of links not yet found in the {linkchecker_links} table
    // have now been imported by the above code. If the number of missing links
    // still exceeds the scan limit defined in LINKCHECKER_SCAN_MAX_LINKS_PER_RUN
    // the content need to be re-scanned until all links have been collected and
    // saved in {linkchecker_links} table.
    //
    // Above code has already scanned a number of LINKCHECKER_SCAN_MAX_LINKS_PER_RUN
    // links and need to be substracted from the number of missing links to
    // calculate the correct number of re-scan rounds.
    //
    // To prevent endless loops the $skip_missing_links_detection need to be TRUE.
    // This value will be set by the calling batch process that already knows
    // that it is running a batch job and the number of required re-scan rounds.
    $missing_links_count = count($missing_links) - LINKCHECKER_SCAN_MAX_LINKS_PER_RUN;
    if (!$skip_missing_links_detection && $missing_links_count > 0) {
      module_load_include('inc', 'linkchecker', '/includes/linkchecker.batch');
      batch_set(_linkchecker_batch_import_single_node($node->nid, $missing_links_count));

      // If batches were set in the submit handlers, we process them now,
      // possibly ending execution. We make sure we do not react to the batch
      // that is already being processed (if a batch operation performs a
      // drupal_execute).
      if (($batch =& batch_get()) && !isset($batch['current_set'])) {
        batch_process('node/' . $node->nid);
      }
    }
  }

  // Remove dead link references for cleanup reasons as very last step.
  _linkchecker_cleanup_node_references($node->nid, $links);
}