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role-postgresql-backup/templates/postgresql-backup-script.sh

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#!/usr/bin/env bash
# {{ ansible_managed }}
set -o pipefail
BACKUP_DIR_BASE="{{ postgresql_backup.backup_dir | default( '/var/backup/postgresql/' ) }}"
DATE_FORMAT="{{ postgresql_backup.date_format | default( '%Y-%m-%d_%H-%M' ) }}"
create_backup_dir() {
local backup_dir="${BACKUP_DIR_BASE%/}/$(date "+$DATE_FORMAT")"
mkdir -p "$backup_dir"
echo "$backup_dir"
}
backup_databases() {
{% for db in postgresql_backup.databases %}
{% if db.password %}
export PGPASSWORD="{{ db.password }}"
{% endif %}
if (umask 077 && pg_dump -F c -h "{{ db.host | default( 'localhost' ) }}" -U "{{ db.user | default( 'postgres' ) }}" -p "{{ db.port | default( '5432' ) }}" "{{ db.name }}" -f "{{ db.name }}.in_progress.psql"); then
mv "{{ db.name }}.in_progress.psql" "{{ db.name }}.psql"
echo "backup of {{ db.name }} successful"
else
echo "failed to export {{ db.name }}"
return 1
fi;
{% endfor %}
return 0
}
main() {
backup_dir="$(create_backup_dir)"
echo "Created backup directory \"${backup_dir}\"."
pushd . >/dev/null
cd "$backup_dir"
echo "Starting databases backup."
if backup_databases; then
echo "Databases backup is done."
else
echo "Databases backup failed. Exiting."
exit 1;
fi;
popd >/dev/null
}
main