Undefined array key "id" in task.class

[EC2311]

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GLPI Version

10.0.19

Plugin version

1.0.3

Bug description

When some agents sends inventory, I have still an error on php and inc/task.class (line 177)

the content of $computer
ordi : O:8:"Computer":22:{s:9:"dohistory";b:1;s:7:"devices";a:0:{}s:13:" * usenotepad";b:1;s:6:"fields";a:0:{}s:5:"input";a:0:{}s:7:"updates";a:0:{}s:9:"oldvalues";a:0:{}s:17:"history_blacklist";a:0:{}s:22:"auto_message_on_action";b:1;s:12:"no_form_page";b:0;s:33:"additional_fields_for_dictionnary";a:0:{}s:10:" * fkfield";s:0:"";s:12:" * searchopt";b:0;s:14:"taborientation";s:8:"vertical";s:23:"get_item_to_display_tab";b:1;s:32:"deduplicate_queued_notifications";b:1;s:5:"right";N;s:7:" * type";i:-1;s:14:" * displaylist";b:1;s:9:"showdebug";b:0;s:19:" * last_clone_index";N;s:8:" * agent";N;}

there is fields array, but it's empty ?

Relevant log output

[2025-09-10 10:28:58] glpiphplog.WARNING:   *** PHP Warning (2): Undefined array key "id" in D:\wamp\www\glpi\plugins\databaseinventory\inc\task.class.php at line 177
  Backtrace :
  src\Plugin.php:1763                                PluginDatabaseinventoryTask::handleInventoryTask()
  src\Inventory\Request.php:420                      Plugin::doHookFunction()
  src\Inventory\Request.php:130                      Glpi\Inventory\Request->handleInventoryTask()
  src\Inventory\Request.php:340                      Glpi\Inventory\Request->handleTask()
  src\Inventory\Request.php:83                       Glpi\Inventory\Request->contact()
  src\Agent\Communication\AbstractRequest.php:359    Glpi\Inventory\Request->handleAction()
  src\Agent\Communication\AbstractRequest.php:271    Glpi\Agent\Communication\AbstractRequest->handleJSONRequest()
  front\inventory.php:100                            Glpi\Agent\Communication\AbstractRequest->handleRequest()
  plugins\glpiinventory\front\communication.php:72   include_once()
  plugins\glpiinventory\index.php:45                 include_once()

Page URL

No response

Steps To reproduce

No response

Your GLPI setup information

No response

Anything else?

No response

[EC2311]

I did some others tests

I deleted computer and agent in GLPI -> always same error (although computer was no more in static group)

I desactivated Dabaseinventory plugin

Inventory raised to glpi
Then I reactivated plugin dabataseInventory (after added computer in static group)
Inventory of DB raised too

So in fact I solved issued, but I don't understand the error...

[stonebuzz]

Hi @EC2311

Line 136

$params['item'] refers to the agent.

You can dump its fields using:

$params['item']->fields

and check for the itemtype and items_id keys.

These two values correspond to the asset linked to this agent (normally a PC on which you want to perform the database inventory).

[EC2311]

Hi @stonebuzz

I have the dump.
params :

the items_id is 0
The agent has just been created, so I remark that sometimes, 2 requests are necessary to create the items :
1 -> agent is created (and not item)
2 -> item is then created

[stonebuzz]

This explains the Undefined array key 'id' error (likely due to a missing asset)

After the first request I believe there might be an issue.
It would be useful to check the GLPI logs to see if anything relevant is being recorded.

[EC2311]

On php errors log( both site and wamp), at the time of the creation of agent, there is no error unless that of databaseinventory :(

what is strange, that I am with glpiinventory 1.5.3 (latest) on dev (the one with issue), and glpiinventory 1.3.4 (older) : I think perhaps an issue in 'creation/updating' agent/item ?

I will test with desactivating databaseinventory to see if some new items/agent are still created with 'no' computer

[stonebuzz]

Here is what I assume happens:

1. The agent runs for the first time (the computer and agent does not yet exists in GLPI).
2. The agent contacts GLPI for the first time (initial "contact" phase).
3. GLPI creates the agent entry (without any associated asset at this stage).
4. GLPI calls the DatabaseInventory plugin to check whether any parameters will need to be requested later depending of related Computer (this is where the warning is triggered).
5. GLPI returns the tasks to be executed (inventory + database parameter request)(in this case only inventory).
6. The agent performs its local inventory.
7. The agent sends the inventory results to GLPI.
8. GLPI processes the inventory file and creates or updates the computer record.
9. GLPI updates the agent entry to link it with the corresponding computer.

[EC2311]

so,

When computer doesn't exist in glpi (or link between agent and computer is not made (agent may have been removed because no activity of computer)), then you call databaseinventory (3) although the id of computer is not known, or is 0 in agent fie link?

so I think a prevent of id (computer) = 0 must be done ?

[stonebuzz]

Yes, I’ll go ahead and add that.

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