Log4rs rolling file appender error

[fhalwani]

Hi, I managed to run log4rs with a single logfile successfully, but when I try the rolling_appender I get the following errors:

log4rs: error deserializing appender rolling_appender: no appender deserializer for kind `compound` registered
log4rs: Reference to nonexistent appender: `rolling_appender`

this is my Cargo.toml:

[package]
name = "logger"
version = "0.1.0"
edition = "2024"

[dependencies]
log = "0.4.28"
log4rs = { version = "1.4.0", features = ["rolling_file_appender", "compound_policy", "time_trigger", "fixed_window_roller"] }

I also tried:

log4rs = { version = "1.4.0", features = ["all_components"] }

and received the same error.

My logging_config.yaml is:

appenders:
  console_appender:
    kind: console
    encoder:
      pattern: '{h({d(%Y-%m-%d %H:%M:%S)} - {l}: {m}{n})}'
  rolling_appender:
    kind: rolling_file
    path: logs/commonpaths.log
    # For Windows, use path: "$ENV{USERPROFILE}/logs/commonpaths.log"
    # For Linux/macOS, use path: "$ENV{HOME}/logs/commonpaths.log"
    append: true
    encoder:
      pattern: '{h({d(%Y-%m-%d %H:%M:%S)} - {l}: {m}{n})}'
    policy:
    kind: compound
    trigger:
      kind: time
      interval: 1 day
      modulate: false
      max_random_delay: 0
    roller:
      kind: fixed_window
      base: 1
      count: 5
      pattern: logs/commonpaths.log._$TIME{%Y-%m-%d}.gz
root:
  level: trace
  appenders:
    - console_appender
    - rolling_appender

and in my main.rs, I call:

log4rs::init_file("logging_config.yaml", Default::default()).unwrap();

Thank you for your help.

[jer]

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[fhalwani]

Thank you for your email, I have made the corrections

[fhalwani]

Thank you for your guidance, I’ve edited my question.

[firebits.io]

@fhalwani

I also tried:

log4rs = { version = "1.4.0", features = ["all_components"] }

After a quick look at the repository, it seems that you need "config_parsing" and "yaml_format" features as well.

[fhalwani]

Thank you for your help, but I followed your suggestion and I received the same error message.

[fhalwani]

The error was resolved by fixing the indentations in my logging_config.yaml as suggested here:

log4rs rolling file appender error

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