release: add release script

Signed-off-by: Mustafa Elbehery <melbeher@redhat.com>

scripts/release.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+  echo "enter release string according to semantic versioning (e.g. v1.2.3)."
+  read -r INPUT
+  if [[ ! "${INPUT}" =~ ^v[0-9]+.[0-9]+.[0-9]+ ]]; then
+    echo "Expected 'version' param of the form 'v<major-version>.<minor-version>.<patch-version>' but got '${INPUT}'"
+    exit 1
+  fi
+
+  VERSION=${INPUT#v}
+  RELEASE_VERSION="${VERSION}"
+  MINOR_VERSION=$(echo "${VERSION}" | cut -d. -f 1-2)
+
+  source_version=$(grep -E "\s+Version\s*=" ../version/version.go | sed -e "s/.*\"\(.*\)\".*/\1/g")
+  if [[ "${source_version}" != "${RELEASE_VERSION}" ]]; then
+        source_minor_version=$(echo "${source_version}" | cut -d. -f 1-2)
+        echo "$source_minor_version"
+        if [[ "${source_minor_version}" != "${MINOR_VERSION}" ]]; then
+          echo "Wrong bbolt minor version in version.go. Expected ${MINOR_VERSION} but got ${source_minor_version}. Aborting."
+          exit 1
+        fi
+
+        echo "Updating version from ${source_version} to ${RELEASE_VERSION} in version.go"
+        sed -i "" "s/${source_version}/${RELEASE_VERSION}/g" ../version/version.go
+  fi
+
+  REPOSITORY=${REPOSITORY:-"git@github.com:etcd-io/bbolt.git"}
+  BRANCH=${BRANCH:-"release-${MINOR_VERSION}"}
+
+  echo "committing 'version.go' to remote repo"
+  date_string=$(date +%Y%m%d)
+  local_branch_name="version_${date_string}"
+  local_branch_err=$(git checkout -b "$local_branch_name" | grep -E "error|fatal" || true )
+  echo "$local_branch_err"
+  git add ../version/version.go
+
+  echo "committing version.go"
+  git commit -s -m "Update version to ${VERSION}"
+
+  git push -u origin "${BRANCH}"
+  echo "version.go has been committed to remote repo"
+
+
+  remote_tag_exists=$(git ls-remote --tags "$REPOSITORY" | grep -c "${INPUT}" || true)
+  if [ "${remote_tag_exists}" -gt 0 ]; then
+     echo "Release version tag exists on remote. Checking out refs/tags/${INPUT}"
+     git checkout -q "tags/${INPUT}"
+  elif [ "${remote_tag_exists}" -eq 0 ]; then
+     echo "Create new tag"
+     git tag "$INPUT"
+     git push origin "$INPUT"
+  fi
+  echo "SUCCESS"