release: add release script

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

scripts/release.sh

@@ -0,0 +1,62 @@
+#!/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)
+
+REPOSITORY=${REPOSITORY:-"git@github.com:etcd-io/bbolt.git"}
+ORIGIN=${ORIGIN:-"origin"}
+BRANCH=${BRANCH:-"release-${MINOR_VERSION}"}
+
+# ensuring the minor-version is identical.
+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)
+      if [[ "${source_minor_version}" != "${MINOR_VERSION}" ]]; then
+        echo "Wrong bbolt minor version in version.go. Expected ${MINOR_VERSION} but got ${source_minor_version}. Aborting."
+        exit 1
+      fi
+fi
+
+# creating a branch to bump 'version.go'.
+date_string=$(date +%Y%m%d)
+local_branch_name="version_${date_string}"
+local_branch_err=$(git checkout -b "${local_branch_name}" | grep -E "error|fatal" || true )
+if [[ -n "${local_branch_err}" ]]; then
+  echo "${local_branch_err}"
+fi
+
+# bump 'version.go'.
+echo "Updating version from '${source_version}' to '${RELEASE_VERSION}' in 'version.go'"
+sed -i "s/${source_version}/${RELEASE_VERSION}/g" ./version/version.go
+
+# push 'version.go' to remote.
+echo "committing 'version.go'"
+git add ./version/version.go
+git commit -s -m "Update version to ${VERSION}"
+git push -u -f "${ORIGIN}" "${local_branch_name}"
+echo "'version.go' has been committed to remote repo."
+
+# create tag and push to remote.
+remote_tag_exists=$(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 "Creating new tag for '${INPUT}'"
+   git tag -f "${INPUT}"
+   git push -f origin "${INPUT}"
+fi
+echo "Tag '${INPUT}' has been created and pushed to remote repo."
+echo "SUCCESS"

version/version.go

@@ -2,5 +2,5 @@ package version
 
 var (
 	// Version shows the last bbolt binary version released.
-	Version = "1.4.0-alpha.0"
+	Version = "1.4.0-beta.11"
 )