Add update-javaagent gitlab job (#3305)

Author: jeffreyc-splunk

.gitlab-ci.yml

@@ -144,6 +144,16 @@ update-openjdk:
     - .gitlab/install-gh-cli.sh
     - .gitlab/update-openjdk.sh
 
+update-javaagent:
+  only:
+    - schedules
+  stage: update-deps
+  needs: []
+  dependencies: []
+  script:
+    - .gitlab/install-gh-cli.sh
+    - .gitlab/update-javaagent.sh
+
 tidy-dependabot-pr:
   rules:
     - if: $CI_COMMIT_BRANCH =~ /^dependabot\/go_modules\/.*/ && $CI_COMMIT_AUTHOR =~ /^dependabot.*/

.gitlab/update-javaagent.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# NOTE: this script is meant to be run on the GitLab CI, it depends on GitLab CI variables
+# Based on https://github.com/signalfx/splunk-otel-java/blob/c9134906c84e9a32a974dec4b380453fe1757410/scripts/propagate-version.sh
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+# shellcheck source-path=SCRIPTDIR
+source "${SCRIPT_DIR}/common.sh"
+
+ROOT_DIR="${SCRIPT_DIR}/../"
+cd "${ROOT_DIR}"
+
+create_collector_pr() {
+  local repo="signalfx/splunk-otel-collector"
+  local repo_url="https://srv-gh-o11y-gdi:${GITHUB_TOKEN}@github.com/${repo}.git"
+  local branch="create-pull-request/update-javaagent"
+  local message="Update splunk-otel-javaagent to latest"
+
+  echo ">>> Cloning the $repo repository ..."
+  git clone "$repo_url" collector-mirror
+  cd collector-mirror
+
+  setup_branch "$branch" "$repo_url"
+
+  echo ">>> Getting latest splunk-otel-javaagent release ..."
+  tag="$( gh release view --repo "https://github.com/signalfx/splunk-otel-java" --json tagName --jq 'select(.isDraft|not and .isPrelease|not) | .tagName' )"
+  if [[ -n "$tag" ]]; then
+    echo ">>> Updating splunk-otel-javaagent version to $tag ..."
+    echo "$tag" > instrumentation/packaging/java-agent-release.txt
+  else
+    echo "ERROR: Failed to get latest release tag from https://github.com/signalfx/splunk-otel-java !" >&2
+    exit 1
+  fi
+
+  # Only create the PR if there are changes
+  if ! git diff --exit-code >/dev/null 2>&1; then
+    git commit -S -am "$message"
+    git push -f "$repo_url" "$branch"
+    echo ">>> Creating the PR ..."
+    gh pr create \
+      --draft \
+      --repo "$repo" \
+      --title "$message" \
+      --body "$message" \
+      --base main \
+      --head "$branch"
+  fi
+}
+
+setup_gpg
+import_gpg_secret_key "$GITHUB_BOT_GPG_KEY"
+setup_git
+create_collector_pr