78 lines
2.1 KiB
Bash
Executable File
78 lines
2.1 KiB
Bash
Executable File
#!/data/data/com.termux/files/usr/bin/bash
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# Initialize
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ABSPATH="$(readlink -f "$BASH_SOURCE")"
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set -x
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cd "${ABSPATH%/*}" || { echo "Cannot change directory" >&2; exit 1; }
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test -f ./env && source ./env || { echo "Unable to source user variables in $PWD"; exit 1; }
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# From https://serverfault.com/a/799198
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# Since Termux has no uuidgen command, we need to create one randomly
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function uuidgen() {
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od -x /dev/urandom | head -1 | awk '{OFS="-"; print $2$3,$4,$5,$6,$7$8$9}'
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}
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# From https://unix.stackexchange.com/a/27014
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function time_diff {
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# Find the time difference between the two arguments (in seconds)
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local T="$(( "$1" - "$2" ))"
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local D=$((T/60/60/24))
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local H=$((T/60/60%24))
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local M=$((T/60%60))
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local S=$((T%60))
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(( $D > 0 )) && printf '%dd ' $D
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(( $H > 0 )) && printf '%dh ' $H
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(( $M > 0 )) && printf '%dm ' $M
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(( $D > 0 || $H > 0 || $M > 0 )) && printf 'and '
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printf '%ds\n' $S
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}
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function prune() {
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test -z "$PRUNE_COMMAND" && return
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./run_remote.sh cd "$DESTINATION_LOCATION" "&&" $PRUNE_COMMAND "$BORG_REPO"
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}
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function backup() {
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# First, we need to rsync our changes to the host
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echo "Running rsync..."
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local RETRIES=10
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while (( RETRIES > 0 )); do
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# Try to rsync
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$RSYNC_COMMAND "$SOURCE_LOCATION" "$REMOTE_HOST:$DESTINATION_LOCATION" && break
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(( RETRIES-- ))
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echo "rsync failed. Retrying $RETRIES more times. Sleeping 10s"
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sleep 10s
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done
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if (( RETRIES == 0 )); then
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# We exceeded the retry limit. Fail
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return 1
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fi
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# Next, instruct the host to create a borg
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echo "Running borg..."
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./run_remote.sh cd "$DESTINATION_LOCATION" "&&" pwd "&&" $BORG_COMMAND "$BORG_REPO::$HOSTNAME-$(uuidgen)" . || return 2
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}
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# Take wakelock so we don't fall asleep
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termux-wake-lock
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START_TIME="$(date +%s)"
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# Perform the backup
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backup
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RESULT=$?
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DURATION="$(time_diff "$(date +%s)" "$START_TIME" )"
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# Prune
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prune
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echo "Completed $(date +%F-%T)"
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echo "Duration: $DURATION"
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if (( RESULT == 0 )); then
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termux-notification --title "Backup completed successfully in $DURATION"
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else
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termux-notification --title "Backup failed in $DURATION"
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fi
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# Remove our wakelock
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termux-wake-unlock
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