Add 'prepare-release.sh' script

This script updates chart version and creates helm package.

Related: #131

deploy/operator.yaml

@@ -36,7 +36,7 @@ spec:
       containers:
         - name: network-operator
           # Replace this with the built image name
-          image: mellanox/network-operator
+           mellanox/network-operator
           command:
           - network-operator
           imagePullPolicy: IfNotPresent

deployment/network-operator/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: network-operator
 version: 0.3.0
 kubeVersion: '>= 1.17.0'
-appVersion: v0.3.0
+appVersion: v0.3.1
 description: Nvidia Mellanox network operator
 type: application
 keywords:

scripts/releases/prepare-release.sh

@@ -0,0 +1,127 @@
+#!/bin/bash -e
+# Copyright 2020 NVIDIA
+#
+# 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 pipefail
+
+this=`basename $0`
+
+usage () {
+cat << EOF
+Usage: $this [-h] RELEASE_VERSION GPG_KEY
+
+Options:
+  -h         show this help and exit
+
+Example:
+
+  $this v0.1.2 "Jane Doe <jane.doe@example.com>"
+
+
+NOTE: The GPG key should be associated with the signer's Github account.
+EOF
+}
+
+sign_helm_chart() {
+  local chart="$1"
+  echo "Signing Helm chart $chart"
+  local sha256=`openssl dgst -sha256 "$chart" | awk '{ print $2 }'`
+  local yaml=`tar xf $chart -O network-operator/Chart.yaml`
+  echo "$yaml
+...
+files:
+  $chart: sha256:$sha256" | gpg -u "$key" --clearsign -o "$chart.prov"
+}
+
+#
+# Parse command line
+#
+while getopts "h" opt; do
+    case $opt in
+        h)  usage
+            exit 0
+            ;;
+        *)  usage
+            exit 1
+            ;;
+    esac
+done
+shift "$((OPTIND - 1))"
+
+# Check that no extra args were provided
+if [ $# -ne 2 ]; then
+    if [ $# -lt 2 ]; then
+        echo -e "ERROR: too few arguments\n"
+    else
+        echo -e "ERROR: unknown arguments: ${@:3}\n"
+    fi
+    usage
+    exit 1
+fi
+
+release=$1
+key="$2"
+shift 2
+
+container_image=k8s.gcr.io/nfd/node-feature-discovery:$release
+
+#
+# Check/parse release number
+#
+if [ -z "$release" ]; then
+    echo -e "ERROR: missing RELEASE_VERSION\n"
+    usage
+    exit 1
+fi
+
+if [[ $release =~ ^(v[0-9]+\.[0-9]+)(\..+)?$ ]]; then
+    docs_version=${BASH_REMATCH[1]}
+    semver=${release:1}
+else
+    echo -e "ERROR: invalid RELEASE_VERSION '$release'"
+    exit 1
+fi
+
+## Patch deployment files
+sed -e s"/image:.*/image: mellanox\/network-operator:$release/" \
+    -i deploy/operator.yaml
+
+# Patch Helm chart
+chart=`echo $release | cut -c 2-`
+sed -e s"/appVersion:.*/appVersion: $release/" \
+    -e s"/^version:.*/version: $chart/" \
+    -i deployment/network-operator/Chart.yaml
+sed -e s"/pullPolicy:.*/pullPolicy: IfNotPresent/" \
+    -i deployment/network-operator/values.yaml
+
+#
+# Create release assets to be uploaded
+#
+helm package deployment/network-operator/ --version $semver
+
+chart_name="network-operator-$semver.tgz"
+sign_helm_chart $chart_name
+
+cat << EOF
+
+*******************************************************************************
+*** Please manually upload the following generated files to the Github release
+*** page:
+***
+***   $chart_name
+***   $chart_name.prov
+***
+*******************************************************************************
+EOF
+