nocin.eu

Homelab, Linux, JS & ABAP (~˘▾˘)~
 
Android

[Android] Installing LineageOS on a Motorola Moto G100

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Just installed LineageOS on a used Moto G100. Following are a few notes I made while working through the excellent installation guide.

Two settings must be enabled in the Developer options on your device before you start:

  • Developer options → Enable USB-Debugging
  • Developer options → Enable OEM unlocking

Otherwise, you will encounter the same error as I did when unlocking the bootloader.

adb reboot bootloader
fastboot devices
fastboot oem get_unlock_data
fastboot oem unlock UNIQUE_KEY

After entering the UNIQUE_KEY, select “Unlock Bootloader” on your phone with the volume down button and confirm with the power button.

The next point that confused me for a second was this:

But you just have to use the volume buttons and select recovery on the smartphone screen from the menu you’re in. I just didn’t realize it was a menu at first…

All in all, everything worked without any problems and took maybe 30 minutes in total.

BTP, SAP

[BTP] Change S-User Password

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When testing API Endpoints of applications running on BTP, it can be necessary to authenticate using the right S-User credentials. In such a scenario, the Universal ID password will not help.

Universal ID password can be changed via https://accounts.sap.com (will forward to the Standard SAP ID Service)

A specific S-User password can be changed via https://account.sap.com (will forward to Manage my Account, where you see the different S-User and P-User, linked to your Universal ID)

Home Assistant

[Home Assistant] HASS VM High CPU Usage on Proxmox

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Since my Proxmox Server is also my HTPC in my living room, I noticed that suddenly the CPU fan become very noisy. When checking all LXCs and VMs, it turned out that the Home Assistant VW was the cause.

When checking the Supervisor logs, I saw that there was a docker container that got terminated. This semmed to match the CPU usage pattern I checked before.

To inspect the docker container via the Advanced SSH & Web Terminal add-on, you must disable the Protection mode first.

After that, simply run docker stats.

If there are no suspicious values, simply open some of the add-ons in another window and check how the values behave. In the above screenshot, I simply opened the VSCode editor, and you can immediately see an extreme high CPU usage. After a quick search, I found open issues that seem to be related to this issue:

As a workaround, a user had the idea to simply restart VSCode via an automation, when its CPU rises above a threshold. To do this, you have to enable some CPU & Memory sensors of the VSCode add-on. Search for your Home Assistant Supervisor Integration.

Select the Studio Code Server add-on.

And enable the sensors.

Now you can set up a simple automation like the following.

alias: Restart VSCode when cpu/memory too high
description: ""
triggers:
  - trigger: numeric_state
    entity_id:
      - sensor.studio_code_server_cpu_percent
    for:
      hours: 0
      minutes: 5
      seconds: 0
    above: 50
  - trigger: numeric_state
    entity_id:
      - sensor.studio_code_server_memory_percent
    above: 30
    for:
      hours: 0
      minutes: 5
      seconds: 0
conditions: []
actions:
  - action: hassio.addon_restart
    metadata: {}
    data:
      addon: a0d7b954_vscode
mode: single

Since I have the automation setup, the Proxmox CPU fan is quiet again and the VM behaves normal.

Workflow

[Workflow] AC Rule

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Recently, I had the task of assigning a workflow decision step to some users that were customized in a Z-Table. Normally I would have done this, by creating a container element “Actors”, a task that calls a method to return these Actors and use these Actors in the decision step. But this time I tried a custom AC Rule for the first time and I must say it was much easier than expected.

To begin, simply create a function module. The function module only needs two table parameters, AC_CONTAINER and ACTOR_TAB. They can be copied from RH_GET_ACTORS or GM_GET_RESP_FROM_INTERNAL. There you can also check, how to access the AC_CONTAINER table, if you need any input values from the WF. In my case, I just had to read the Z-Table and return the result via ACTOR_TAB.

SELECT * FROM ztable INTO TABLE @DATA(lt_table).

LOOP at lt_table INTO DATA(ls_table).
  "you can also check if the provided user exists by using function module 'SUSR_USER_CHECK_EXISTENCE'
  APPEND VALUE #( otype = 'US' objid = ls_table-userid ) TO actor_tab.
ENDLOOP.

IF lines( actor_tab) = 0.
  RAISE nobody_found.
ENDIF.

Then simply go to tcode PFAC, create a rule, provide the function module and check the flag box at the end.

In the PFAC transaction, you can also simulate the rule resolution.

If everything works fine, add the new created rule to the decision step.

And done. Really straight forward.

ABAP

[ABAP] Get Filename and Mimetype from uploaded file

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    DATA data_tab TYPE solix_tab.
    DATA filename TYPE string.
    DATA path     TYPE string DEFAULT 'C:\Users\path\to\my\file.pdf'.

    cl_gui_frontend_services=>gui_upload( EXPORTING filename   = path )
                                                    filetype   = 'BIN'
                                          CHANGING  data_tab   = data_tab ).

    CALL FUNCTION 'SO_SPLIT_FILE_AND_PATH'
      EXPORTING
        full_name     = path 
      IMPORTING
        stripped_name = filename
      EXCEPTIONS
        x_error       = 1
        OTHERS        = 2.

    DATA(file_extension) = /iwwrk/cl_mgw_workflow_rt_util=>get_extention_from_file_name( filename ).
    DATA(mimetype)       = /iwwrk/cl_mgw_workflow_rt_util=>get_mime_type_from_extension( file_extension ).

Instead of SO_SPLIT_FILE_AND_PATH you can also use PC_SPLIT_COMPLETE_FILENAME.

Home Assistant

[Home Assistant] Editor shortcuts

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All VS Code shortcuts will also work in Home Assistant. I mostly need the following:

TabMove lines to right
Ctrl + Tab (on Linux Mint it’s Shit + Tab)Move lines to left
Ctrl + Alt + Mouse selectionMark area over multiple lines (works only in YAML editor)
Ctrl + Shift + KDelete row
Alt + Arrow key up or downMove row(s) up or down
Alt + Shift + Arrow downDuplicate selected rows
Ctrl + Shit + /Comment line/area

Also, you can simply expand the window you are working in, by clicking on the window title.