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file_only_logger
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0.1.3
0.1.0
A simple logger that writes messages to log files only (not to the console).
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file_only_logger
README.md
README.md
# FileOnly Logger
A simple logger that writes messages to log files only (not to the console).
Elixir's Logger Backends were abandoned in favor of Erlang's Logger handlers.
## Installation
Add `file_only_logger` to your list of dependencies in `mix.exs`:
```elixir
def deps do
[
{:file_only_logger, "~> 0.2.0"}
]
end
```
Proper configuration must be set via config files. See files `config/config.exs`
and `config/config_logger.exs` as an example (including log file rotation).
## Usage
Trying to log any message with severity less than the configured level will
simply cause the message to be ignored.
The configuration values for log level are:
- :all (default)
- :none
- [Logger.level()](https://hexdocs.pm/logger/Logger.html#t:level/0)
You may use file `config/runtime.exs` to configure the above log level:
```elixir
import Config
config :file_only_logger, level: :info
```
#### Example
```elixir
defmodule Log do
use File.Only.Logger
warning :error_occurred, {reason, file, env} do
"""
\n'error' occurred...
Reason => '#{:file.format_error(reason)}'
File => #{Path.expand(file) |> inspect() |> maybe_break(8)}
#{from(env, __MODULE__)}\
"""
end
end
defmodule Check do
def log_warning(file) do
Log.warning(:error_occurred, {:enoent, file, __ENV__})
end
end
Check.log_warning(__ENV__.file)
Check.log_warning("generate-line-break")
# will respectively log these lines in the configured log file(s):
2023-12-20 11:37:17.011 [warning]
'error' occurred...
Reason => 'no such file or directory'
File => "c:/Users/Ray/Documents/ex_dev/projects/file_only_logger/iex"
• App: file_only_logger
• Library: file_only_logger
• Module: Log
• Function: Check.log_warning/1
2023-12-20 11:45:13.274 [warning]
'error' occurred...
Reason => 'no such file or directory'
File =>
"c:/Users/Ray/Documents/ex_dev/projects/file_only_logger/generate-line-break"
• App: file_only_logger
• Library: file_only_logger
• Module: Log
• Function: Check.log_warning/1
```