A script to migrate a route between namespaces

migrate-route.sh

#!/bin/bash

# use oc
OC=oc

usage() {
  echo "Usage: ./migrate-route.sh -s nginx-ns1 -d nginx-ns2 -r my.route.example"
  echo "Options:"
  echo "  -s <SOURCE_NAMESPACE>       #required"
  echo "  -d <DEST_NAMESPACE>         #required"
  echo "  -r <ROUTE_NAME>             #required"
  exit 1
}

if [[ ! $@ =~ ^\-.+ ]]
then
  usage
fi

while getopts ":s:d:r:h:" opt; do
  case ${opt} in
    s ) # process option p
      SOURCE_NAMESPACE=$OPTARG;;
    d ) # process option d
      DEST_NAMESPACE=$OPTARG;;
    r ) # process option s
      ROUTE_NAME=$OPTARG;;
    h )
      usage;;
    *)
      usage;;
  esac
done

# need these, make sure we have them
if [[ -z "${SOURCE_NAMESPACE}" || -z "${DEST_NAMESPACE}" || -z "${ROUTE_NAME}" ]]; then
  usage
fi

SOURCE_ROUTE_EXISTS=$(${OC} -n ${SOURCE_NAMESPACE} get route ${ROUTE_NAME} -o name --no-headers 2>/dev/null)
if [ "$SOURCE_ROUTE_EXISTS" = "" ]; then
  echo "Route ${DEST_NAMESPACE}/${ROUTE_NAME} doesn't exist! Bailing!"
  exit 1
fi

DEST_ROUTE_EXISTS=$(${OC} -n ${DEST_NAMESPACE} get route ${ROUTE_NAME} -o name --no-headers 2>/dev/null)
if [ "$DEST_ROUTE_EXISTS" != "" ]; then
  echo "Route ${DEST_NAMESPACE}/${ROUTE_NAME} exists! Bailing!"
  exit 1
fi

echo "Getting ready to migrate the route"
TMP=$(mktemp temp.${SOURCE_NAMESPACE}-${ROUTE_NAME}.yaml.XXXX)
echo ">> exporting route config from ${SOURCE_NAMESPACE}/${ROUTE_NAME}"
${OC} -n ${SOURCE_NAMESPACE} get route ${ROUTE_NAME} -o yaml --export > ${TMP}
echo ">> deleting route ${SOURCE_NAMESPACE}/${ROUTE_NAME}"
${OC} -n ${SOURCE_NAMESPACE} delete route ${ROUTE_NAME}
sleep 2
echo ">> importing route config to ${DEST_NAMESPACE}/${ROUTE_NAME}"
${OC} -n ${DEST_NAMESPACE} create -f ${TMP}
rm ${TMP}