GH action for updating logstash version (#18035)

* GH action for updating logstash version

This commit adds a GH action for bumping the logstash version. It uses the
updatescli based on a suggestion for how the beats team is doing file updates.
There is a workflow_dispatch trigger that accepts a new logstash version. Both
the versions.yml and lock file are updated. If it is a branch where we are not
vendoring a lockfile that file is skipped without failing the workflow step.

* use stub workflow to test

* Separate step when modifying

* dont track temp updatecli file and install action

* restore stub

* Refactor updatecli workflow

use pattern suggested in code review

* Use test stub to validate changes

* fix inputs section

* fix branch

* dont fail if file is not present

* try with no global conditionals

* file condition

* name conditional

* split into separate pipeline files

* remove unused scmid

* no explicit pr action?

* add back PR

* try sources pattern

* explicitly connect target with scmid

* ensure lock file lookup executes from checkout

* Cleanup

* test

* restore LOGSTASH_BRANCH

* codereview feedback

Author: donoghuc

.ci/updatecli/bump-logstash-version.yml

@@ -0,0 +1,81 @@
+---
+name: Update logstash version files
+pipelineid: "logstash/version-updates-{{ requiredEnv "LOGSTASH_BRANCH" }}"
+
+scms:
+  default:
+    kind: github
+    spec:
+      user: '{{ requiredEnv "GITHUB_ACTOR" }}'
+      username: '{{ requiredEnv "GITHUB_ACTOR" }}'
+      owner: '{{ .scm.owner }}'
+      repository: '{{ .scm.repository }}'
+      token: '{{ requiredEnv "GITHUB_TOKEN" }}'
+      branch: '{{ requiredEnv "LOGSTASH_BRANCH" }}'
+      commitusingapi: true
+      force: false
+
+actions:
+  default:
+    title: 'Bump logstash version {{ requiredEnv "LOGSTASH_VERSION" }}'
+    kind: github/pullrequest
+    scmid: default
+    spec:
+      automerge: false
+      labels:
+      - automation
+      description: |-
+        ### What
+        Update logstash version
+
+sources:
+  lock_file_exists:
+    kind: shell
+    scmid: default
+    spec:
+      command: test -f Gemfile.jruby-3.1.lock.release
+
+targets:
+  update_logstash_version:
+    name: Update logstash version in versions.yml
+    kind: yaml
+    disablesourceinput: true
+    scmid: default
+    spec:
+      file: versions.yml
+      key: $.logstash
+      value: '{{ requiredEnv "LOGSTASH_VERSION" }}'
+  
+  update_logstash_core_version:
+    name: Update logstash-core version in versions.yml
+    kind: yaml
+    disablesourceinput: true
+    scmid: default
+    spec:
+      file: versions.yml
+      key: $.logstash-core
+      value: '{{ requiredEnv "LOGSTASH_VERSION" }}'
+
+  update_gemfile_lock_dependency:
+    name: Update logstash-core dependency in lockfile
+    kind: file
+    disablesourceinput: true
+    scmid: default
+    dependson:
+      - 'source#lock_file_exists'
+    spec:
+      file: Gemfile.jruby-3.1.lock.release
+      matchpattern: 'logstash-core \(= [0-9]+\.[0-9]+\.[0-9]+'
+      replacepattern: 'logstash-core (= {{ requiredEnv "LOGSTASH_VERSION" }}'
+  
+  update_gemfile_lock_spec:
+    name: Update logstash-core spec in lockfile
+    kind: file
+    disablesourceinput: true
+    scmid: default
+    dependson:
+      - 'source#lock_file_exists'
+    spec:
+      file: Gemfile.jruby-3.1.lock.release
+      matchpattern: 'logstash-core \([0-9]+\.[0-9]+\.[0-9]+-java\)'
+      replacepattern: 'logstash-core ({{ requiredEnv "LOGSTASH_VERSION" }}-java)'

.ci/updatecli/values.d/scm.yml

@@ -0,0 +1,3 @@
+scm:
+  owner: elastic
+  repository: logstash

.github/workflows/bump-logstash.yml

@@ -0,0 +1,31 @@
+name: bump-logstash-version
+
+on:
+  workflow_dispatch:
+    inputs:
+      logstash_version:
+        description: 'Logstash version (example: 9.1.4)'
+        required: true
+        type: string
+      logstash_branch:
+        description: 'Logstash branch (example: 9.1)'
+        required: true
+        type: string
+
+jobs:
+  bump:
+    permissions:
+      contents: write
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+
+      - uses: elastic/oblt-actions/updatecli/run@v1
+        with:
+          command: apply --config .ci/updatecli/bump-logstash-version.yml --values .ci/updatecli/values.d/scm.yml
+          version-file: .updatecli-version
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          LOGSTASH_BRANCH: "${{ github.event.inputs.logstash_branch }}"
+          LOGSTASH_VERSION: "${{ github.event.inputs.logstash_version }}"

.updatecli-version

@@ -0,0 +1 @@
+v0.104.0