From a6e9c23016d115541f3d089cb6885441e287ada8 Mon Sep 17 00:00:00 2001
From: Dan Poltawski <dan@moodle.com>
Date: Fri, 21 Aug 2015 14:48:36 +0100
Subject: [PATCH] MDL-51109 task: more debug info for failed scheduled tasks

---
 admin/tool/task/cli/schedule_task.php |  8 ++++++++
 lib/cronlib.php                       | 16 ++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/admin/tool/task/cli/schedule_task.php b/admin/tool/task/cli/schedule_task.php
index 6904d48c8ba..659ee2e82ed 100644
--- a/admin/tool/task/cli/schedule_task.php
+++ b/admin/tool/task/cli/schedule_task.php
@@ -149,6 +149,14 @@ if ($execute = $options['execute']) {
         mtrace("... used " . ($DB->perf_get_queries() - $predbqueries) . " dbqueries");
         mtrace("... used " . (microtime(true) - $pretime) . " seconds");
         mtrace("Task failed: " . $e->getMessage());
+        if ($CFG->debugdeveloper) {
+            if (!empty($e->debuginfo)) {
+                mtrace("Debug info:");
+                mtrace($e->debuginfo);
+            }
+            mtrace("Backtrace:");
+            mtrace(format_backtrace($e->getTrace(), true));
+        }
         \core\task\manager::scheduled_task_failed($task);
         get_mailer('close');
         exit(1);
diff --git a/lib/cronlib.php b/lib/cronlib.php
index 5db8ba8bb2b..e6e6b464476 100644
--- a/lib/cronlib.php
+++ b/lib/cronlib.php
@@ -91,6 +91,14 @@ function cron_run() {
                 mtrace("... used " . (microtime(1) - $pretime) . " seconds");
             }
             mtrace("Scheduled task failed: " . $task->get_name() . "," . $e->getMessage());
+            if ($CFG->debugdeveloper) {
+                 if (!empty($e->debuginfo)) {
+                    mtrace("Debug info:");
+                    mtrace($e->debuginfo);
+                }
+                mtrace("Backtrace:");
+                mtrace(format_backtrace($e->getTrace(), true));
+            }
             \core\task\manager::scheduled_task_failed($task);
         }
         get_mailer('close');
@@ -127,6 +135,14 @@ function cron_run() {
                 mtrace("... used " . (microtime(1) - $pretime) . " seconds");
             }
             mtrace("Adhoc task failed: " . get_class($task) . "," . $e->getMessage());
+            if ($CFG->debugdeveloper) {
+                 if (!empty($e->debuginfo)) {
+                    mtrace("Debug info:");
+                    mtrace($e->debuginfo);
+                }
+                mtrace("Backtrace:");
+                mtrace(format_backtrace($e->getTrace(), true));
+            }
             \core\task\manager::adhoc_task_failed($task);
         }
         get_mailer('close');