Microsoft.Extensions.Logging: Console TimestampFormat lost on reload of appsettings.json

[IgorMilavec]

Description

I have a net5.0 hosted service running from the console with Console TimestampFormat configured in appsettings.json:

  "Logging": {
    "Console": {
      "TimestampFormat": "[HH:mm:ss] "
    },
  },

Console logger output is property timestamped until I edit and save appsettings.json while the app is running. After that the console output is not timestamped anymore until I restart the app.

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Issue Details

---

Description

I have a net5.0 hosted service running from the console with Console TimestampFormat configured in appsettings.json:

  "Logging": {
    "Console": {
      "TimestampFormat": "[HH:mm:ss] "
    },
  },

Console logger output is property timestamped until I edit and save appsettings.json while the app is running. After that the console output is not timestamped anymore until I restart the app.

Author:	IgorMilavec
Assignees:	-
Labels:	area-System.Console, untriaged
Milestone:	-

Tagging subscribers to this area: @maryamariyan
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Description

I have a net5.0 hosted service running from the console with Console TimestampFormat configured in appsettings.json:

  "Logging": {
    "Console": {
      "TimestampFormat": "[HH:mm:ss] "
    },
  },

Console logger output is property timestamped until I edit and save appsettings.json while the app is running. After that the console output is not timestamped anymore until I restart the app.

Author:	IgorMilavec
Assignees:	-
Labels:	area-Extensions-Logging, area-System.Console, untriaged
Milestone:	-

[maryamariyan]

@IgorMilavec there is a breaking change with .NET 5.0.

Please try updating appsettings.json to below a try again:

  "Logging": {
    "Console": {
      "FormatterOptions":
      {
        "TimestampFormat": "[HH:mm:ss] "
      }
    },
  },

How does your console logging setup look like?

[maryamariyan]

Here's a link to doc on the deprecations and description of what's new: https://docs.microsoft.com/en-us/dotnet/core/extensions/console-log-formatter

[IgorMilavec]

Thank you for pointing me in the right direction. I also needed to add FormatterName for this to work:

    "Console": {
      "FormatterName": "simple",
      "FormatterOptions": {
        "TimestampFormat": "[HH:mm:ss] "
      }
    },

It is interesting though, that the old setting worked until reload of appsettings.json, which indicates that some compatibility work was done, but not complete.

[cincuranet]

Triage: Solution already provided above.
Closing as Not Planned.