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Pre-release

This release is a pre-release and may not be stable for production use.

OVOS-utils

ovos-utils is a shared utility library for the OpenVoiceOS ecosystem. It provides logging, process lifecycle management, a testing-friendly fake message bus, event scheduling, file utilities, network checks, audio playback, and XDG path helpers. Most OVOS packages, including ovos-bus-client, ovos-config, and ovos-workshop, depend on it, so most projects get it as a transitive dependency.

Install

pip install ovos-utils

Usage

The library exposes many small, independent modules. Import only what you need. For example, use FakeBus to test skill code without a live message bus:

from ovos_utils.fakebus import FakeBus, FakeMessage

bus = FakeBus()

def on_utterance(message):
    print(message.data["utterances"])

bus.on("recognizer_loop:utterance", on_utterance)
bus.emit(FakeMessage("recognizer_loop:utterance", {"utterances": ["hello"]}))

See docs/index.md for the full module overview, with links to detailed pages on logging, process utilities, FakeBus, and event handling. See docs/prerelease-quirks.md for what changed since the last stable release.

Command line: ovos-logs

ovos-logs is a helper tool that slices, lists, and reduces OVOS service logs.

  • ovos-logs slice [options]. Slice logs for a time period. The default period runs from the last service start (-s) until now (-u). Pick specific logs with -l (default: all logs). Set the log directory with -p and the output file with -f.

    ovos-logs slice
    # Slice all logs from the last service start until now.
    
    ovos-logs slice -s 17:05:20 -u 17:05:25
    # Slice all logs between 17:05:20 and 17:05:25.
    
    ovos-logs slice -s 17:05:20 -u 17:05:25 -l skills
    # Slice only skills.log between 17:05:20 and 17:05:25.
    
    ovos-logs slice -s 17:05:20 -u 17:05:25 -f ~/testslice.log
    # Slice logs between 17:05:20 and 17:05:25 into ~/testslice.log.
    # Default output file: ~/slice_<timestamp>.log
    
  • ovos-logs list [-e|-w|-d|-x] [options]. List log lines by severity (error, warning, debug, exception). Specify at least one level. You can combine several. Set the time range with -s and -u (default: last service start until now). Pick specific logs with -l (default: all logs).

    ovos-logs list -x
    # List EXCEPTION-level lines (with tracebacks) from the last service start until now.
    
    ovos-logs list -w -e -s 20-12-2023 -l bus -l skills
    # List WARNING and ERROR lines from bus.log and skills.log since 20 December 2023.
    
  • ovos-logs reduce [options]. Shrink logs to a target size in bytes, or remove entries before a given date. Pick specific logs with -l (default: all logs). Set the log directory with -p.

    ovos-logs reduce
    # Shrink all logs to 0 bytes.
    
    ovos-logs reduce -s 1000000
    # Shrink all logs to about 1 MB, keeping the latest entries.
    
    ovos-logs reduce -d "1-12-2023 17:00"
    # Shrink all logs to entries after the given date and time.
    
    ovos-logs reduce -s 1000000 -l skills -l bus
    # Shrink skills.log and bus.log to about 1 MB each.
    
  • ovos-logs show -l <servicelog>. Print the contents of a log file.

    ovos-logs show -l bus
    # Print the contents of bus.log.
    

    The logs shown depend on which log files exist in the log folder.

Related projects

  • OpenVoiceOS/ovos-bus-client. The real message bus client that FakeBus and FakeMessage stand in for during testing.
  • OpenVoiceOS/ovos-config. Reads and writes mycroft.conf, the configuration file used by LOG, PIDLock, and the network utilities.
  • OpenVoiceOS/ovos-workshop. The skill framework built on EventContainer, RuntimeRequirements, and the other utilities in this library.

License

Apache License 2.0. See LICENSE.

Metadata

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