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[Rebecca Blundell <1802046@xxxxxxxxxxxxxxxxxx>]

** Changed in: mahara/19.04
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1802046

Title:
  Upgrade to 18.10 error on oAuth clean up

Status in Mahara:
  Fix Released
Status in Mahara 18.04 series:
  Fix Released
Status in Mahara 18.10 series:
  Fix Committed
Status in Mahara 19.04 series:
  Fix Released

Bug description:
  Mahara: 18.10.0
  DB: Postgres
  OS: Linux
  Brower: N/A

  During an upgrade from 17.04 to 18.10, the following error occurs:

  [INF] 79 (lib/mahara.php:238) Upgrading auth.webservice
  [WAR] 79 (lib/errors.php:858) Failed to get a recordset: postgres8 error: [-1: ERROR:  update or delete on table "oauth_server_registry" violates foreign key constraint "oautservconf_oau_fk" on table "oauth_server_config"
  [WAR] 79 (lib/errors.php:858) DETAIL:  Key (id)=(7) is still referenced from table "oauth_server_config".] in adodb_throw(DELETE FROM "oauth_server_registry" WHERE externalserviceid IN (SELECT id FROM "external_services" WHERE component = ?), Array)Command was: DELETE FROM "oauth_server_registry" WHERE externalserviceid IN (SELECT id FROM "external_services" WHERE component = ?) and values was (0:module/lti)
  Call stack (most recent first):
    * log_message("Failed to get a recordset: postgres8 error: [-1: E...", 8, true, true) at /var/www/mahara/htdocs/lib/errors.php:95
    * log_warn("Failed to get a recordset: postgres8 error: [-1: E...") at /var/www/mahara/htdocs/lib/errors.php:858
    * SQLException->__construct("Failed to get a recordset: postgres8 error: [-1: E...") at /var/www/mahara/htdocs/lib/dml.php:1025
    * delete_records_sql("DELETE FROM "oauth_server_registry" WHERE external...", array(size 1)) at /var/www/mahara/htdocs/lib/dml.php:1002
    * delete_records_select("oauth_server_registry", "WHERE externalserviceid IN (SELECT id FROM {extern...", array(size 1)) at /var/www/mahara/htdocs/webservice/lib.php:1529
    * external_delete_descriptions("module/lti") at /var/www/mahara/htdocs/webservice/lib.php:1570
    * external_reload_webservices() at /var/www/mahara/htdocs/auth/webservice/db/upgrade.php:594
    * xmldb_auth_webservice_upgrade("2017030600") at /var/www/mahara/htdocs/lib/upgrade.php:450
    * upgrade_plugin(object(stdClass)) at /var/www/mahara/htdocs/lib/mahara.php:272
    * upgrade_mahara(array(size 1)) at /var/www/mahara/htdocs/admin/cli/upgrade.php:56

  [WAR] 79 (lib/dml.php:1025) Failed to get a recordset: postgres8 error: [-1: ERROR:  update or delete on table "oauth_server_registry" violates foreign key constraint "oautservconf_oau_fk" on table "oauth_server_config"
  [WAR] 79 (lib/dml.php:1025) DETAIL:  Key (id)=(7) is still referenced from table "oauth_server_config".] in adodb_throw(DELETE FROM "oauth_server_registry" WHERE externalserviceid IN (SELECT id FROM "external_services" WHERE component = ?), Array)Command was: DELETE FROM "oauth_server_registry" WHERE externalserviceid IN (SELECT id FROM "external_services" WHERE component = ?) and values was (0:module/lti)
  Call stack (most recent first):
    * delete_records_sql("DELETE FROM "oauth_server_registry" WHERE external...", array(size 1)) at /var/www/mahara/htdocs/lib/dml.php:1002
    * delete_records_select("oauth_server_registry", "WHERE externalserviceid IN (SELECT id FROM {extern...", array(size 1)) at /var/www/mahara/htdocs/webservice/lib.php:1529
    * external_delete_descriptions("module/lti") at /var/www/mahara/htdocs/webservice/lib.php:1570
    * external_reload_webservices() at /var/www/mahara/htdocs/auth/webservice/db/upgrade.php:594
    * xmldb_auth_webservice_upgrade("2017030600") at /var/www/mahara/htdocs/lib/upgrade.php:450
    * upgrade_plugin(object(stdClass)) at /var/www/mahara/htdocs/lib/mahara.php:272
    * upgrade_mahara(array(size 1)) at /var/www/mahara/htdocs/admin/cli/upgrade.php:56


  The lti service had been configured in the past but is now disabled.
  During the upgrade, it tries to clean up the tables for unused modules
  and the lti comes up in the list.

  But, it's failing due to a foreign key constraint on the
  oauth_server_config table.

  The external_delete_descriptions() needs to also remove records from
  the oauth_server_config table before removing records from the
  oauth_server_registry table.

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