gistfile1.txt

#!/bin/bash
# =============================================================
# synology_folder_sizes.sh
# Collects shared folder sizes and writes to InfluxDB v2
# Schedule in DSM Task Scheduler (e.g. every 24 hours)
# =============================================================

INFLUX_URL="http://INFLUXDB_HOST_HERE:8086"
INFLUX_ORG="INFLUXDB_ORG_HERE"
INFLUX_BUCKET="INFLUXDB_BUCKET_HERE"
INFLUX_TOKEN="PUT_INFLUXDB_TOKEN_HERE"
HOSTNAME="PUT_HOSTNAME_HERE"

log() { echo "[$(date '+%H:%M:%S')] $*"; }

log "Starting synology_folder_sizes.sh"

# Get current unix timestamp
TIMESTAMP=$(date +%s)
log "Timestamp: $TIMESTAMP"

# Build line protocol payload
PAYLOAD=""
COUNT=0
SKIPPED=0

# Get list of shares (skip the header line)
SHARES=$(synoshare --enum ALL 2>/dev/null | tail -n +2)
TOTAL=$(echo "$SHARES" | grep -c .)
log "Found $TOTAL shares"

while IFS= read -r share; do
    # Skip empty lines
    [ -z "$share" ] && continue

    # Get the real path for this share using sed instead of awk
    SHARE_PATH=$(synoshare --get "$share" 2>/dev/null | grep "Path" | sed 's/.*\[\(.*\)\]/\1/')

    if [ -z "$SHARE_PATH" ]; then
        log "  SKIP $share — could not get path"
        SKIPPED=$(( SKIPPED + 1 ))
        continue
    fi

    if [ ! -d "$SHARE_PATH" ]; then
        log "  SKIP $share — path does not exist: $SHARE_PATH"
        SKIPPED=$(( SKIPPED + 1 ))
        continue
    fi

    # Get volume from path (e.g. /volume1/Media -> volume1)
    VOLUME=$(echo "$SHARE_PATH" | cut -d'/' -f2)

    # Get size in KB, convert to bytes
    SIZE_KB=$(du -xsk "$SHARE_PATH" 2>/dev/null | awk '{print $1}')
    if [ -z "$SIZE_KB" ]; then
        log "  SKIP $share — du failed on $SHARE_PATH"
        SKIPPED=$(( SKIPPED + 1 ))
        continue
    fi

    # Escape spaces in share name for line protocol
    SAFE_SHARE=$(echo "$share" | tr ' ' '_')

    log "  OK $share -> $SHARE_PATH ($SIZE_KB kb)"

    # Append to payload
    PAYLOAD="${PAYLOAD}synology_folder,host=${HOSTNAME},folder=${SAFE_SHARE},volume=${VOLUME} size_kb=${SIZE_KB} ${TIMESTAMP}
"
    COUNT=$(( COUNT + 1 ))
done <<< "$SHARES"

log "Collected $COUNT folders, skipped $SKIPPED"

# Write all data points to InfluxDB in one request
if [ -n "$PAYLOAD" ]; then
    log "Writing to InfluxDB..."
    HTTP_STATUS=$(curl -s -o /tmp/influx_response.txt -w "%{http_code}" \
        -X POST "${INFLUX_URL}/api/v2/write?org=${INFLUX_ORG}&bucket=${INFLUX_BUCKET}&precision=s" \
        -H "Authorization: Token ${INFLUX_TOKEN}" \
        --data-raw "$PAYLOAD")
    RESPONSE=$(cat /tmp/influx_response.txt)
    if [ "$HTTP_STATUS" = "204" ]; then
        log "Success! HTTP $HTTP_STATUS — $COUNT folders written to InfluxDB"
    else
        log "ERROR: HTTP $HTTP_STATUS — $RESPONSE"
    fi
else
    log "No data collected, nothing written"
fi

log "Done"