Add a wrapper script to locate the kubefed binary in a CI environment.

federation/develop/kubefed.sh

+#!/bin/bash
+
+# Copyright 2016 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+# "-=-=-=-=-=-=-=-=-=-="
+# This script is only for CI testing purposes. Don't use it in production.
+# "-=-=-=-=-=-=-=-=-=-="
+
+KUBE_ROOT=${KUBE_ROOT:-$(dirname "${BASH_SOURCE}")/../..}
+source "${KUBE_ROOT}/cluster/clientbin.sh"
+
+# If KUBEFED_PATH isn't set, gather up the list of likely places and use ls
+# to find the latest one.
+if [[ -z "${KUBEFED_PATH:-}" ]]; then
+  kubefed=$( get_bin "kubefed" "federation/cmd/kubefed" )
+
+  if [[ ! -x "$kubefed" ]]; then
+    print_error "kubefed"
+    exit 1
+  fi
+elif [[ ! -x "${KUBEFED_PATH}" ]]; then
+  {
+    echo "KUBEFED_PATH environment variable set to '${KUBEFED_PATH}', but "
+    echo "this doesn't seem to be a valid executable."
+  } >&2
+  exit 1
+fi
+kubefed="${KUBEFED_PATH:-${kubefed}}"
+
+# Use the arguments to the script if it is set, a null string
+# otherwise.
+"${kubefed}" "${@+$@}"