Use -SNAPSHOT as the key to not release oss projects in properties file

.github/scripts/__tests__/release-branch-plan.test.js

@@ -38,6 +38,12 @@ describe('branchFor', () => {
       .toEqual({ version: '5.1.0-M1', branch: 'release/5.1.0-M1' });
   });
 
+  it('OSS skips versions that are not -INTERNAL-SNAPSHOT', () => {
+    expect(branchFor(OSS, '5.0.4-SNAPSHOT', '').skip).toMatch(/not being released/);
+    expect(branchFor(OSS, '5.0.3', '').skip).toMatch(/not being released/);
+    expect(branchFor(OSS, '5.1.0-internal-snapshot', '').branch).toBe('release/5.1.0');
+  });
+
   it('commercial strips only -SNAPSHOT', () => {
     expect(branchFor(COMMERCIAL, '5.0.3-SNAPSHOT', '').branch).toBe('release/5.0.3');
     expect(branchFor(COMMERCIAL, '5.0.3', '').branch).toBe('release/5.0.3');
@@ -81,6 +87,17 @@ describe('buildPlan', () => {
       { project: 'spring-cloud-config', branch: 'release/5.1.0', reason: 'branch already exists' }]);
   });
 
+  it('only plans the -INTERNAL-SNAPSHOT projects of an OSS train', () => {
+    const { todo, skipped } = buildPlan({
+      mode: OSS, train: '2026.1.0', ...noTags,
+      entries: entries([['spring-cloud-config', '5.1.0-INTERNAL-SNAPSHOT'],
+        ['spring-cloud-commons', '5.1.0-SNAPSHOT'], ['spring-cloud-release', '2026.1.0-INTERNAL-SNAPSHOT']]),
+    });
+    expect(todo.map(t => t.project)).toEqual(['spring-cloud-config', 'spring-cloud-release']);
+    expect(skipped).toEqual([{
+      project: 'spring-cloud-commons', reason: 'not being released in this train (not -INTERNAL-SNAPSHOT)' }]);
+  });
+
   it('only plans the hotfix projects of a hotfix train', () => {
     const { todo, skipped } = buildPlan({
       mode: HOTFIX, train: '2025.1.2', ...noTags,
@@ -96,9 +113,9 @@ describe('buildPlan', () => {
   ])('skips a version already tagged in the %s, even with no branch', (_, taggedRepo) => {
     const tagExists = (repo, tag) => repo === taggedRepo && tag === 'v5.0.3';
     const { todo, skipped } = buildPlan({
-      mode: OSS, train: '2026.1.0', branchExists: none, tagExists,
+      mode: COMMERCIAL, train: '2025.1.2', branchExists: none, tagExists,
       // Not being released in this train: the entry still names the previous release.
-      entries: entries([['spring-cloud-config', '5.0.3'], ['spring-cloud-commons', '5.1.0-INTERNAL-SNAPSHOT']]),
+      entries: entries([['spring-cloud-config', '5.0.3'], ['spring-cloud-commons', '5.0.4']]),
     });
     expect(todo.map(t => t.project)).toEqual(['spring-cloud-commons']);
     expect(skipped).toEqual([{

.github/scripts/release-branch-plan.js

@@ -18,6 +18,10 @@
 //   create-commercial-release-branch  reads <train>,                   creates release/<x.y.z>
 //   create-hotfix-release-branch      reads <train>,                   creates release/<x.y.z.h>
 //
+// The -INTERNAL-SNAPSHOT file lists every project, but only the ones being released in the
+// train are at -INTERNAL-SNAPSHOT. The rest are at plain -SNAPSHOT and have neither a tag nor a
+// release branch yet, so the tag and branch checks cannot tell them apart - the suffix does.
+//
 // Hotfix versions are the 4-segment ones. The releaser config lists them as -SNAPSHOT, since
 // the train is not finalized when the branches are cut.
 
@@ -66,6 +70,9 @@ const branchFor = (mode, rawVersion, qualifier) => {
   }
 
   if (mode === 'create-oss-release-branch') {
+    if (!/-INTERNAL-SNAPSHOT$/i.test(rawVersion)) {
+      return { skip: 'not being released in this train (not -INTERNAL-SNAPSHOT)' };
+    }
     // 5.1.0-INTERNAL-SNAPSHOT -> 5.1.0: everything after the first `-` goes.
     const version = rawVersion.split('-')[0];
     if (!/^\d+\.\d+(\..+)?$/.test(version)) return { skip: `unusable version '${rawVersion}'` };

.github/workflows/README-create-release-branches.md

@@ -15,7 +15,7 @@ The plan logic is [`release-branch-plan.js`](../scripts/release-branch-plan.js).
 
 | Mode | Properties file | Branch (and `v<version>` tag) checked | Projects included |
 |------|-----------------|----------------|-------------------|
-| `create-oss-release-branch` | `<train>-INTERNAL-SNAPSHOT` (the `-M<n>`/`-RC<n>` phase is stripped for the lookup) | `release/<x.y.z>[-M1\|-RC2]` | every project |
+| `create-oss-release-branch` | `<train>-INTERNAL-SNAPSHOT` (the `-M<n>`/`-RC<n>` phase is stripped for the lookup) | `release/<x.y.z>[-M1\|-RC2]` | only projects whose version is `-INTERNAL-SNAPSHOT`; plain `-SNAPSHOT` entries aren't being released in the train |
 | `create-commercial-release-branch` | `<train>` | `release/<x.y.z>` | every project; the source branch is resolved per project with `resolve-release-branch` |
 | `create-hotfix-release-branch` | `<train>` | `release/<x.y.z.h>` | only projects with a 4-segment version (e.g. `5.0.4.1-SNAPSHOT`) |
 

.github/workflows/create-release-branches.yml

@@ -5,7 +5,8 @@ run-name: "Create Release Branches - ${{ inputs.mode }} - ${{ inputs.spring_clou
 # Runs one of the single-project branch-creation workflows for every project in a release
 # train that does not have its release branch yet.
 #
-#   create-oss-release-branch         OSS release; reads <train>-INTERNAL-SNAPSHOT
+#   create-oss-release-branch         OSS release; reads <train>-INTERNAL-SNAPSHOT, the -INTERNAL-SNAPSHOT
+#                                     projects only (plain -SNAPSHOT ones aren't being released)
 #   create-commercial-release-branch  commercial-only release; reads <train>
 #   create-hotfix-release-branch      hotfix; reads <train>, the 4-segment (x.y.z.h) projects only
 #