#!/bin/bash

# Gets the latest RPM package revision within the given agent version. Most
# agent versions will only have one (implicit) RPM package revision, which is
# revision #1.  If you create an annotated tag of the form "v<agent
# version>-rpm<revision #>" (e.g. v2.0.0-rpm2), that will indicate that the RPM
# package should have a new revision.

set -euo pipefail

agent_version=$1
if test -z $agent_version
then
  echo "Usage: $0 agent_version" >&2
  exit 1
fi

rpm_tag=$(git describe --abbrev=0 --tags --match "v${agent_version}-rpm*" 2>/dev/null || true)

revision=$(echo -n $rpm_tag | sed -e "s/v${agent_version}-rpm//")

echo -n ${revision:-"1"}