NEW: Adding a option to run a batch job to the front end

README.md

@@ -26,15 +26,22 @@ The external links module is a task and ModelAdmin to track and to report on bro
  5. Run in your browser - `/dev/build` to rebuild the database.
  6. Run the following task *http://path.to.silverstripe/dev/tasks/CheckExternalLinks* to check for broken external links
 
+## Report ##
+
+A new report is added called 'External Broken links report' from here you can also start a new job which is run
+via AJAX and in batches of 10 so it can be run via content editors who do not have access to jobs or tasks.
+
 ## Dev task ##
 
 Run the following task *http://path.to.silverstripe/dev/tasks/CheckExternalLinks* to check your site for external
 broken links.
+
+## Queued job ##
+
 If you have the queuedjobs module installed you can set the task to be run every so ofter
 Add the following yml config to config.yml in mysite/_config have the the task run once every day (86400 seconds)
 
-`---
-Name: externallinkssettings
----
+```
 CheckExternalLinks:
-  Delay: 86400`
+  Delay: 86400
+```

code/controllers/CMSExternalLinks.php

@@ -2,19 +2,69 @@
 
 class CMSExternalLinks_Controller extends Controller {
 
-	private static $allowed_actions = array('createQueuedReport');
+	private static $allowed_actions = array('getJobStatus', 'clear', 'start');
 
+	/*
+	 * Respond to Ajax requests for info on a running job
+	 * also calls continueJob and clear depending on the status of the job
+	 *
+	 * @return string JSON string detailing status of the job
+	 */
+	public function getJobStatus() {
+		$trackID = Session::get('ExternalLinksTrackID');
+		if (!$trackID) return;
+		$noPages = Versioned::get_by_stage('SiteTree', 'Live')->count();
+		$result = BrokenExternalPageTrack::get()
+			->filter('TrackID', $trackID)
+			->exclude('PageID', 0);
+		$completedPages = count($result);
 
-	public function createQueuedReport() {
-		if (!Permission::check('ADMIN')) return;
+		echo json_encode(array(
+			'TrackID' => $trackID,
+			'Completed' => $completedPages,
+			'Total' => $noPages
+		));
 
-		// setup external links job
-		$externalLinks = new CheckExternalLinksJob();
-		$job = singleton('QueuedJobService');
-		$jobID = $job->queueJob($externalLinks);
+		if ($completedPages >= $noPages) {
+			$this->clear();
+		} else {
+			$this->continueJob();
+		}
+	}
+
+	/*
+	 * Clears the tracking id and any surplus entries for the BrokenExternalPageTrack model
+	 */
+	public function clear() {
+		// clear any old entries
+		$trackID = Session::get('ExternalLinksTrackID');
+		$oldEntries = BrokenExternalPageTrack::get()
+			->exclude('TrackID', $trackID);
+		foreach ($oldEntries as $entry) {
+			$entry->delete();
+		}
+		Session::clear('ExternalLinksTrackID');
+	}
+
+	/*
+	 * Starts a broken external link check
+	 */
+	public function start() {
+		$track = BrokenExternalPageTrack::create();
+		$track->write();
+		$track->TrackID = $track->ID;
+		$track->write();
+
+		Session::set('ExternalLinksTrackID', $track->ID);
+
+		$this->continueJob();
+	}
 
-		// redirect to the jobs page
-		$admin = QueuedJobsAdmin::create();
-		$this->Redirect($admin->Link());
+	/*
+	 * Continues a broken external link check
+	 */
+	public function continueJob() {
+		$task = new CheckExternalLinks();
+		$task->run(null);
 	}
 }

code/jobs/CheckExternalLinksJob.php

@@ -56,7 +56,8 @@ public function process() {
 		}
 
 		$task = new CheckExternalLinks();
-		$task->run($page);
+		$task->pageToProcess = $page;
+		$task->run();
 
 		// and now we store the new list of remaining children
 		$this->pagesToProcess = $remainingPages;

code/model/BrokenExternalLink.php

@@ -31,3 +31,13 @@ function canView($member = false) {
 		return Permission::checkMember($member, $codes);
 	}
 }
+
+class BrokenExternalPageTrack extends DataObject {
+	private static $db = array(
+		'TrackID' => 'Int'
+	);
+
+	private static $has_one = array(
+		'Page' => 'Page'
+	);
+}

code/reports/BrokenExternalLinksReport.php

@@ -66,19 +66,20 @@ public function sourceRecords() {
 	}
 
 	public function getCMSFields() {
+		Requirements::javascript('externallinks/javascript/BrokenExternalLinksReport.js');
 		$fields = parent::getCMSFields();
 		if (class_exists('AbstractQueuedJob')) {
-			$button = '<a href = "%s"><button class="externalLinksReport" type="button">%s</button></a>';
+			$button = '<button id="externalLinksReport" type="button">%s</button>';
 			$runReportButton = new LiteralField(
 				'runReport',
 				sprintf(
 					$button,
-					'admin/externallinks/createQueuedReport',
 					_t('ExternalBrokenLinksReport.RUNREPORT', 'Create new report')
 				)
 			);
 			$fields->push($runReportButton);
-			$reportResultSpan = '<span id="ReportHolder"></span></ br><span id="ReportProgress"></span>';
+
+			$reportResultSpan = '</ br></ br><h3 id="ReportHolder"></h3>';
 			$reportResult = new LiteralField('ResultTitle', $reportResultSpan);
 			$fields->push($reportResult);
 		}

code/tasks/CheckExternalLinks.php

@@ -1,6 +1,7 @@
 <?php
 
 class CheckExternalLinks extends BuildTask {
+	public static $pageToProcess;
 	protected $title = 'Checking broken External links in the SiteTree';
 
 	protected $description = 'A task that records external broken links in the SiteTree';
@@ -10,19 +11,20 @@ class CheckExternalLinks extends BuildTask {
 	private $completedPages;
 	private $totalPages;
 
-	public function getCompletedPages() {
-		return $this->completedPages;
-	}
-
-	public function getTotalPages() {
-		return $this->totalPages;
-	}
-
 	function run($request) {
-		if (isset($request->ID)) {
-			$pages = $request;
+		$trackID = Session::get('ExternalLinksTrackID');
+		if (isset($this->pageToProcess)) {
+			$pages = $this->pageToProcess;
 		} else {
-			$pages = Versioned::get_by_stage('SiteTree', 'Live');
+			if ($trackID) {
+				$result = BrokenExternalPageTrack::get()
+					->filter('TrackID', $trackID);
+				$pages = Versioned::get_by_stage('SiteTree', 'Live')
+					->exclude('ID', $result->column('PageID'))
+					->limit(10);
+			} else {
+				$pages = Versioned::get_by_stage('SiteTree', 'Live');
+			}
 		}
 		foreach ($pages as $page) {
 			++$this->totalPages;
@@ -93,6 +95,12 @@ function run($request) {
 				}
 			}
 			++$this->completedPages;
+			if ($trackID) {
+				$trackPage = new BrokenExternalPageTrack();
+				$trackPage->PageID = $page->ID;
+				$trackPage->TrackID = $trackID;
+				$trackPage->write();
+			}
 		}
 
 		// run this again if queued jobs exists and is a valid int

javascript/BrokenExternalLinksReport.js

@@ -0,0 +1,45 @@
+(function($) {
+	$('#externalLinksReport').entwine({
+		onclick: function() {
+			$(this).start();
+			$(this).poll();
+		},
+		start: function() {
+			// initiate a new job
+			$('#ReportHolder').empty();
+			$('#ReportHolder').text('Running report 0%');
+			$('#ReportHolder').append('<span class="ss-ui-loading-icon"></span>');
+			$.ajax({url: "admin/externallinks/start", async: true, timeout: 1000 });
+		},
+		poll: function() {
+			// poll the current job and update the front end status
+			$.ajax({
+				url: "admin/externallinks/getJobStatus",
+				async: true,
+				success: function(data) {
+					var obj = $.parseJSON(data);
+					if (!obj) return;
+					var completed = obj.Completed ? obj.Completed : 0;
+					var total = obj.Total ? obj.Total : 0;
+					if (total > 0 && completed == total) {
+						$('#ReportHolder').text('Report Finished ' + completed + '/' + total);
+					} else {
+						setTimeout(function() { $('#externalLinksReport').poll(); }, 1);
+					}
+					if (total && completed) {
+						if (completed < total) {
+							var percent = (completed / total) * 100;
+							$('#ReportHolder').text('Running report  ' + completed + '/' + 
+								total + ' (' + percent.toFixed(2) + '%)');
+								$('#ReportHolder').
+									append('<span class="ss-ui-loading-icon"></span>');
+							}
+					}
+				},
+				error: function(e) {
+					console.log(e);
+				}
+			});
+		}
+	});
+}(jQuery));