Add influxdb v2 api token support

README.md

@@ -249,10 +249,13 @@ Variable | Default | Notes
 `PRE_SCP_COMMAND` |  | Commands that is executed on `SCP_HOST` before the backup is transferred.
 `POST_SCP_COMMAND` |  | Commands that is executed on `SCP_HOST` after the backup has been transferred.
 `GPG_PASSPHRASE` |  | When provided, the backup will be encrypted with gpg using this `passphrase`.
-`INFLUXDB_URL` |  | When provided, backup metrics will be sent to an InfluxDB instance at this URL, e.g. `https://influxdb.example.com`.
+`INFLUXDB_URL` |  | Required when sending metrics to InfluxDB.
+`INFLUXDB_MEASUREMENT` | `docker_volume_backup` | Required when sending metrics to InfluxDB.
+`INFLUXDB_API_TOKEN` | | When provided, backup metrics will be sent to an InfluxDB instance using the API token for authorization. If API Tokens are not supported by the InfluxDB version in use, `INFLUXDB_CREDENTIALS` must be provided instead.
+`INFLUXDB_ORGANIZATION` | | Required when using `INFLUXDB_API_TOKEN`; e.g. `personal`.
+`INFLUXDB_BUCKET` | | Required when using `INFLUXDB_API_TOKEN`; e.g. `backup_metrics`
+`INFLUXDB_CREDENTIALS` |  | When provided, backup metrics will be sent to an InfluxDB instance using `user:password` authentication. This is required if `INFLUXDB_API_TOKEN` not provided.
 `INFLUXDB_DB` |  | Required when using `INFLUXDB_URL`; e.g. `my_database`.
-`INFLUXDB_CREDENTIALS` |  | Required when using `INFLUXDB_URL`; e.g. `user:pass`.
-`INFLUXDB_MEASUREMENT` | `docker_volume_backup` | Required when using `INFLUXDB_URL`.
 `TZ` | `UTC` | Which timezone should `cron` use, e.g. `America/New_York` or `Europe/Warsaw`. See [full list of available time zones](http://manpages.ubuntu.com/manpages/bionic/man3/DateTime::TimeZone::Catalog.3pm.html).
 
 ## Metrics

src/backup.sh

@@ -172,7 +172,7 @@ INFLUX_LINE="$INFLUXDB_MEASUREMENT\
 "
 echo "$INFLUX_LINE" | sed 's/ /,/g' | tr , '\n'
 
-if [ ! -z "$INFLUXDB_URL" ]; then
+if [ ! -z "$INFLUXDB_CREDENTIALS" ]; then
   info "Shipping metrics"
   curl \
     --silent \
@@ -181,6 +181,15 @@ if [ ! -z "$INFLUXDB_URL" ]; then
     --user "$INFLUXDB_CREDENTIALS" \
     "$INFLUXDB_URL/write?db=$INFLUXDB_DB" \
     --data-binary "$INFLUX_LINE"
+elif [ ! -z "$INFLUXDB_API_TOKEN" ]; then
+  info "Shipping metrics"
+  curl \
+    --silent \
+    --include \
+    --request POST \
+    --header "Authorization: Token $INFLUXDB_API_TOKEN" \
+    "$INFLUXDB_URL/api/v2/write?org=$INFLUXDB_ORGANIZATION&bucket=$INFLUXDB_BUCKET" \
+    --data-binary "$INFLUX_LINE"
 fi
 
 info "Backup finished"

src/entrypoint.sh

@@ -27,6 +27,9 @@ GPG_PASSPHRASE="${GPG_PASSPHRASE:-}"
 INFLUXDB_URL="${INFLUXDB_URL:-}"
 INFLUXDB_DB="${INFLUXDB_DB:-}"
 INFLUXDB_CREDENTIALS="${INFLUXDB_CREDENTIALS:-}"
+INFLUXDB_ORGANIZATION="${INFLUXDB_ORGANIZATION:-}"
+INFLUXDB_BUCKET="${INFLUXDB_BUCKET:-}"
+INFLUXDB_API_TOKEN="${INFLUXDB_API_TOKEN:-}"
 INFLUXDB_MEASUREMENT="${INFLUXDB_MEASUREMENT:-docker_volume_backup}"
 BACKUP_CUSTOM_LABEL="${BACKUP_CUSTOM_LABEL:-}"
 CHECK_HOST="${CHECK_HOST:-"false"}"