init-backup

#!/usr/bin/env bash

set -e

echo "### logging in to Azure"
az login --identity --verbose
echo "### Setting the subscription"
az account set --subscription $SUBSCRIPTION_ID 

echo "### Getting the secret from Azure Key Vault"

# Get Secret from KV - Private Key
vault_name=$KEY_VAULT_NAME
secret_name=$SECRET_NAME

mkdir -p /root/.ssh
az keyvault secret show --name $secret_name --vault-name $vault_name --query value -o tsv > /root/.ssh/id_rsa
chmod 600 /root/.ssh/id_rsa

# Get Secret from KV - Host Key

echo "### Getting the host key from Azure Key Vault"
secret_name=$GH_HOST_KEY_SECRET_NAME
az keyvault secret show --name $secret_name --vault-name $vault_name --query value -o tsv > /root/.ssh/known_hosts
chmod 644 /root/.ssh/known_hosts

echo "### preparing the config file"

# Prepare backup.config file
cp /backup-utils/backup.config-example /backup-utils/backup.config
NEW_HOSTNAME=$GHE_HOSTNAME
sed -i "s/^GHE_HOSTNAME=\".*\"/GHE_HOSTNAME=\"$NEW_HOSTNAME\"/" /backup-utils/backup.config


# Running the backup script
echo "### Running the backup script"
cd /backup-utils/bin/
bash ./ghe-backup


GHE_SNAPSHOT_TIMESTAMP=$(ls -lt /backup-utils/data/ | grep "^d" | head -n 1 | awk '{print $NF}')


# archive the contents of the data directory with tar
echo "### Archiving the contents of the data directory with tar"
tar -czf /mnt/data/$GHE_SNAPSHOT_TIMESTAMP.tar.gz -C /backup-utils/data/$GHE_SNAPSHOT_TIMESTAMP .

# Delete any files under /mnt/data that are older than $DAYS_RETENTION
echo "### Deleting files older than $DAYS_RETENTION days from /mnt/data"
backup_count=$(find /mnt/data -type f | wc -l)
if [ $backup_count -gt $MIN_BACKUP_NUM ]; then
  find /mnt/data -type f -mmin +$((DAYS_RETENTION * 1440)) | while read -r file; do
    echo "### Deleting file: $file"
    if [ $(find /mnt/data -type f | wc -l) -gt $MIN_BACKUP_NUM ]; then
      rm -f "$file"
      backup_count=$((backup_count - 1))
    else
      echo "### Minimum number of backups ($MIN_BACKUP_NUM) reached. Stopping deletion."
      break
    fi
  done
else
  echo "### Minimum number of backups ($MIN_BACKUP_NUM) not reached. Skipping deletion."
fi