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Add sample output (fixes #7786)

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This commit is contained in:
Fabian Affolter 2019-02-14 16:32:12 +01:00
parent e00c030fef
commit 7eb5321912
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1 changed files with 13 additions and 5 deletions
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18
source/_components/system_log.markdown
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@ -55,11 +55,17 @@ Errors and warnings are posted as the event `system_log_event`, so it is possibl
| `message` | Descriptive message of the error, e.g., "Error handling request". |
| `timestamp` | Unix timestamp with as a double, e.g., 1517241010.237416. |
Live examples of these events can be found in the Home Assistant log file or by just looking in the system log. An example could, for instance, look like this:
Live examples of these events can be found in the Home Assistant log file (`home-assistant.log`) or by just looking in the system log. An example could, for instance, look like this:
<img src='/images/components/system_log/system_log_entry.png' />
```text
2019-02-14 16:20:35 ERROR (MainThread) [homeassistant.loader] Unable to find component system_healt
2019-02-14 16:20:36 ERROR (MainThread) [homeassistant.components.device_tracker] Error setting up platform google_maps
Traceback (most recent call last):
File "/home/fab/Documents/repos/ha/home-assistant/homeassistant/components/device_tracker/__init__.py", line 184, in
[...]
```
The message ("Unable to find service..."), source (`core.py`) and level (`WARNING`) can easily be extracted from the image. The exact timestamp and stack trace is shown in the selected entry.
The message ("Unable to find component system_healt"), source (`homeassistant.loader`) and level (`ERROR`) can easily be extracted from the log. The exact timestamp and if there is a stack trace that's shown as well. Here is another error caused by the `google_map` integration with additional output present.
## {% linkable_title Examples %}
@ -91,6 +97,7 @@ automation:
This automation will create a persistent notification whenever an error or warning is logged that has the word "service" in the message:
{% raw %}
```yaml
automation:
- alias: Create notifications for "service" errors
@ -99,10 +106,11 @@ automation:
event_type: system_log_event
condition:
condition: template
value_template: {% raw %}'{{ "service" in trigger.event.data.message }}'{% endraw %}
value_template: '{{ "service" in trigger.event.data.message }}'
action:
service: persistent_notification.create
data_template:
title: Something bad happened
message: {% raw %}'{{ trigger.event.data.message }}'{% endraw %}
message: '{{ trigger.event.data.message }}'
```
{% endraw %}