51c134a036
Drastically simplifies setting up cron within ytdl-sub. Below is the documentation which is available in readthedocs, and a section on how to migrate from the old way to this.
## New Cron Documentation
Cron is preconfigured in every ytdl-sub docker container. Enable by adding the following ENV variables to your docker setup.
```
services:
ytdl-sub:
environment:
- CRON_SCHEDULE="0 */6 * * *"
- CRON_RUN_ON_START=false
```
- CRON_SCHEDULE follows the standard [cron scheduling syntax](https://crontab.guru/#0_*/6_*_*_*). The above value will run the script once every 6 hours.
- CRON_RUN_ON_START toggles whether to run your cron script on container start.
The cron script will reside in the main directory with the file name `cron`. Cron logs should show when viewing the Docker logs.
## Migrating Existing Cron Setup
Containers' cron files will remain intact until you add the `CRON_SCHEDULE` variable. Once you add that with your preferred schedule, it will write that value to /config/crontabs/abc and create a new file `cron` within your working directory. Simply copy everything from your existing `run_cron` script into `cron`.
If you have the ENV variable `DOCKER_MODS` in your docker-compose, remove it. It is now included by default. Not removing this will prevent cron logs from showing in your docker container logs.
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2.3 KiB
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69 lines
2.3 KiB
Text
#!/usr/bin/with-contenv bash
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echo "Starting ytdl-sub..."
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# copy config
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[[ ! -e "$DEFAULT_WORKSPACE/config.yaml" ]] && \
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mkdir -p "$DEFAULT_WORKSPACE" && \
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cp /defaults/config.yaml "$DEFAULT_WORKSPACE/config.yaml"
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[[ ! -e "$DEFAULT_WORKSPACE/subscriptions.yaml" ]] && \
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mkdir -p "$DEFAULT_WORKSPACE" && \
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cp /defaults/subscriptions.yaml "$DEFAULT_WORKSPACE/subscriptions.yaml"
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[[ ! -d "$DEFAULT_WORKSPACE/examples" ]] && \
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mkdir -p "$DEFAULT_WORKSPACE/examples" && \
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cp -r /defaults/examples/* "$DEFAULT_WORKSPACE/examples"
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[[ ! -e "/config/.bashrc" ]] && \
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echo "alias ls='ls --color=auto'" > /config/.bashrc && \
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echo "cd ." >> /config/.bashrc
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# permissions
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chown -R ${PUID:-abc}:${PGID:-abc} \
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/config
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# set up cron
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if [ "$CRON_SCHEDULE" != "" ] ; then
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[[ ! -e "$CRON_SCRIPT" ]] && \
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cp /defaults/cron "$CRON_SCRIPT"
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# create cron script wrapper
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echo '#!/bin/bash' > "$CRON_WRAPPER_SCRIPT"
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echo "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" >> "$CRON_WRAPPER_SCRIPT"
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echo "cd \"$DEFAULT_WORKSPACE\"" >> "$CRON_WRAPPER_SCRIPT"
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echo ". \"$CRON_SCRIPT\" | tee -a \"$LOGS_TO_STDOUT\"" >> "$CRON_WRAPPER_SCRIPT"
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chmod +x "$CRON_WRAPPER_SCRIPT"
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chown abc:abc "$CRON_WRAPPER_SCRIPT"
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# Set the crontab file to the schedule, cleanly
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CRON_SCHEDULE_CLEAN="${CRON_SCHEDULE//\"/}"
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CRON_SCHEDULE_CLEAN="${CRON_SCHEDULE_CLEAN//\'/}"
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echo "# min hour day month weekday command" > /config/crontabs/abc
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echo "$CRON_SCHEDULE_CLEAN $DEFAULT_WORKSPACE/.cron_wrapper" >> /config/crontabs/abc
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chmod +x "$CRON_SCRIPT"
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chown abc:abc "$CRON_SCRIPT"
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crontab -u abc /config/crontabs/abc
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CRON_SUCCESS=$?
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if [ $CRON_SUCCESS -eq 0 ] ; then
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echo "Cron enabled with schedule $CRON_SCHEDULE_CLEAN"
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if [ "$CRON_RUN_ON_START" = true ] ; then
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echo "Running cron script on start"
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. "$CRON_WRAPPER_SCRIPT"
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fi
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else
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echo "Error in CRON_SCHEDULE definition, disabling cron."
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exit 1
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fi
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else
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echo "CRON_SCHEDULE not specified, disabling cron."
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echo "# min hour day month weekday command" > /config/crontabs/abc
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echo "" >> /config/crontabs/abc
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fi
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# always create cron log file, after cron runs
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# on start to not tail it again
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echo "" > "$LOGS_TO_STDOUT"
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