Add NTFY support

Dockerfile

@@ -5,7 +5,7 @@ FROM alpine:latest AS final
 # RUN pacman --noconfirm -Syu duplicity python-pip python-pydrive2
 ENV CARGO_NET_GIT_FETCH_WITH_CLI=true
 RUN \
-  apk add py3-pip python3-dev gcc libffi-dev musl-dev openssl-dev pkgconfig duplicity rust cargo git && \
+  apk add py3-pip python3-dev gcc libffi-dev musl-dev openssl-dev pkgconfig duplicity rust cargo git curl && \
   pip install --upgrade pip && \
   pip install pydrive2 && \
   apk del rust musl-dev libffi-dev gcc python3-dev cargo git pkgconfig openssl-dev
@@ -32,3 +32,5 @@ LABEL org.opencontainers.image.authors="Stefano Pigozzi <me@steffo.eu>"
 # Configure duplicity
 ENV DUPLICITY_FULL_IF_OLDER_THAN=1M
 
+ENV NTFY=""
+ENV NTFY_TAGS=""

backup.sh

@@ -8,8 +8,47 @@ set -e
 export PASSPHRASE=$(cat "${DUPLICITY_PASSPHRASE_FILE}")
 
 echo "Launched in backup mode, performing backup..." >> /dev/stderr
+
+if [ -n "${NTFY}" ]; then
+	echo "Sending ntfy backup start notification..." >> /dev/stderr
+	curl "${NTFY}" \
+		--silent \
+		--header "X-Title: Backup started" \
+		--data "Duplicity is attempting to perform a backup to **${DUPLICITY_TARGET_URL}**..." \
+		--header "X-Priority: min" \
+		--header "X-Tags: arrow_heading_up,${NTFY_TAGS}" \
+		--header "Content-Type: text/markdown"
+fi
+
 duplicity \
 	--allow-source-mismatch \
 	--full-if-older-than "${DUPLICITY_FULL_IF_OLDER_THAN}" \
 	/mnt \
 	"${DUPLICITY_TARGET_URL}"
+
+backup_result=$?
+
+if [ -n "${NTFY}" ]; then
+	case "$backup_result" in
+		0)
+			echo "Sending ntfy backup complete notification..." >> /dev/stderr
+			curl "${NTFY}" \
+				--silent \
+				--header "X-Title: Backup complete" \
+				--data "Duplicity has successfully performed a backup to **${DUPLICITY_TARGET_URL}**!" \
+				--header "X-Priority: low" \
+				--header "X-Tags: white_check_mark,${NTFY_TAGS}" \
+				--header "Content-Type: text/markdown"
+		;;
+		*)
+			echo "Sending ntfy backup failed notification..." >> /dev/stderr
+			curl "${NTFY}" \
+				--silent \
+				--header "X-Title: Backup failed" \
+				--data "Duplicity failed to perform a backup to **${DUPLICITY_TARGET_URL}**, and exited with status code **${backup_result}**." \
+				--header "X-Priority: max" \
+				--header "X-Tags: sos,${NTFY_TAGS}" \
+				--header "Content-Type: text/markdown"
+		;;
+	esac
+fi

gdrive.docker-compose.yml

@@ -22,6 +22,8 @@ services:
       DUPLICITY_PASSPHRASE_FILE: "/run/secrets/duplicity_passphrase"
       DUPLICITY_TARGET_URL: "pydrive://641079776729-90s4tnli0ao913ajrpv8cp3c4kkk77j5.apps.googleusercontent.com/Duplicity/this"
       GOOGLE_DRIVE_SETTINGS: "/run/secrets/google_client_config"
+      NTFY: "https://ntfy.sh/garasauto"
+      NTFY_TAGS: "garasauto"
     secrets:
       - google_client_config
       - duplicity_passphrase