Definition of Done for Simantics Platform Releases

  1. All Git repositories that are part of the Simantics release train have a branch called release/x.y.z[.w] and tag called x.y.z[.w].
  2. A change log entry is compiled from the issues in this release and made available to the general public separately for the platform and for the open products included in the release train.
  3. Roadmap is up-to-date.
  4. Tutorials are up-to-date and coherent with the platform.
  5. For all new major/minor releases, Wiki documentation is backed up (cloned).

Simantics Platform Release Process


Released Plug-in Components and Products

There are both plug-in components and products that are part of the Simantics Release Train that shall be released simultaneously to a major or minor Simantics release.

Plug-in components are installable features that are deployed online as P2 repositories for general availability. Products are deployed as ZIP files and made available online in designated locations on simantics.org.

Core components of the release train:

Plug-in components that are part of the release train:

Products that are part of the release train:

For simplicity, each of these components are versioned accoring to platform versioning, i.e. for Platform SDK 1.26.0 there will be Simantics Desktop 1.26.0, Sysdyn 1.26.0, and so on.


Release Schedule


Simantics Platform Release - Step by Step

Create release branch from selected commit

When release stabilisation starts, branch all relevant repositories like this:

git clone ssh://<user>@gerrit.simantics.org:29418/simantics/platform.git
cd platform
git branch release/x.y.z[.w] <commit>
git push origin release/x.y.z[.w]

When creating major/minor releases <commit> is usually a commit in the master branch. With service releases, branch from an existing release/* branch instead.

Instead of doing this clone+branch+push sequence for every SDK repository separately, please use the included release-helper.sh shell script to perform this mechanical work. The script supports many useful basic git commands which all perform the requested operation on all the release train repositories. The operations can be seen from the help text printed by the script when given no arguments:

Usage: release-helper.sh <version> <branch-name> <user-name> clone|branch|checkout|fetch|list-tags|pull|push|push-tags|remove-tag|status|tag

Always begin by cloning all the repositories for working on

./release-helper.sh x.y.z release/x.y.z your-git-username clone

This will create a directory called x.y.z under the current working directory and clone all the repositories under it. The first <version> argument is only used for the base working directory x.y.z. The second <branch-name> argument tells what branch to specify to the action, i.e. branch, checkout, etc.

Branching and pushing the branches to remote happens as follows:

./release-helper.sh x.y.z release/x.y.z your-git-username branch
./release-helper.sh x.y.z release/x.y.z your-git-username checkout
./release-helper.sh x.y.z release/x.y.z your-git-username push

If you're creating a service release x.y.w from x.y.z where w > z, do this:

./release-helper.sh x.y.w release/x.y.z your-git-username clone
./release-helper.sh x.y.w release/x.y.z your-git-username checkout
./release-helper.sh x.y.w release/x.y.w your-git-username branch
./release-helper.sh x.y.w release/x.y.w your-git-username checkout
# Perhaps make modifications to the branch here and commit to each project separately
./release-helper.sh x.y.w release/x.y.w your-git-username push

Prepare release branch for use

In release 1.31.0 Simantics started using the wonderful tool from Obeo (https://github.com/mbarbero/fr.obeo.releng.targetplatform) to generate .target files from .tpd files which allow much simpler specification of the target contents and also composition of .tpd files via inclusion.

In the following steps, it is recommended to ensure every .target file is up-to-date by regenerating them from .tpd files. While doing so, take care to use up-to-date online contents to perform the generation.

Prepare .tpd files in platform repository

  1. Ensure you've ran

    ./release-helper.sh x.y.z release/x.y.z your-git-username checkout
    

    to make sure you're working on the release branch before doing anything.

  2. Go into the cloned platform repository at x.y.z/platform

  3. Edit all target platform files in releng/org.simantics.sdk.build.targetdefinition/, i.e.

    Replace the following rows in both mentioned files:

    location "http://www.simantics.org/download/master/external-components/maven" {
    location "http://www.simantics.org/download/master/external-components/manual" {
    include "http://www.simantics.org/download/master/org.simantics.sdk.build.targetdefinition.tpd"
    location "http://www.simantics.org/download/master/sdk" {
    

    with

    location "http://www.simantics.org/download/release/x.y.z[.w]/maven" {
    location "http://www.simantics.org/download/release/x.y.z[.w]/manual" {
    include "http://www.simantics.org/download/release/x.y.z[.w]/org.simantics.sdk.build.targetdefinition.tpd"
    location "http://www.simantics.org/download/release/x.y.z[.w]/sdk" {
    
  4. Edit version number of org.simantics.sdk feature in features/org.simantics.sdk.feature/feature.xml to x.y.z.

    <feature
          id="org.simantics.sdk"
          label="Simantics SDK"
          version="x.y.z"
          provider-name="VTT Technical Research Centre of Finland">
    

    If the release branch you're setting up is a hotfix-release x.y.z.w, don't include the .w part in this version.

    An example of these changes can be seen in gitweb or review 1361.

  5. Ensure that Gitlab has a release engineering issue for the branched release, such as Simantics 1.34.0 release engineering

  1. Commit the changes made

     git commit -a
    

    with the commit message

     Configured release/x.y.z[.w] branch for SDK builds.
    
     gitlab #xxxx
    

    where #xxxx is the number of the x.y.z[.w] release engineering issue and push them to remote

     git push origin release/x.y.z[.w]
    
  2. If you are branching from master, bump the revision of master right now to start the next release cycle in master. An example of these changes can be seen in gitweb or in review 1362. The changes include:

    Commit the changes with the following commit message

    Bumped master target and org.simantics.sdk feature versions to x.y.z[.w].
    
    gitlab #yyyy
    

    where #yyyy is the number of the next release's release engineering issue.

  3. Do the same for simupedia target platform files as was done in task 6. for platform target definitions.

Test Release Train build

Trigger an execution of the simantics-release-train Jenkins job with parameters

to ensure that all components of the release train build fine and to publish first versions of P2 repositories of everything online.

The release train build is currently never ran automatically. However, after following all these steps, whenever changes are pushed/merged to release/x.y.z[.w] branch in Gerrit, new Jenkins builds are triggered automatically and they will publish the results (P2 repositories/products) at their designated locations online.

[Optional reading] Release train build details

The release train build does two very important steps as the first things, i.e. build the external dependency P2 repositories for both the Platform SDK and Simupedia:

stage('External Dependencies') {
    node {
        build job: 'SDK/Deploy External Components to Web', parameters: params1
        build job: 'Member Components/Simupedia/fi.semantum.simupedia.build.p2.site', parameters: params1
    }    
}

After that it builds the Platform SDK and Simupedia before building anything else:

stage('SDK') {
    node {
        build job: 'SDK/Simantics SDK', parameters: params1
        // Note that Simantics SDK builds simupedia-git as well
    }
}

Review documentation

Documentation to review:

For each wiki page:

Review tutorials

Tag release/* branches

When the release branches are ready for the release, tag them with the tag vx.y.z[.w]:

./release-helper.sh x.y.z release/x.y.z your-git-username checkout
./release-helper.sh x.y.z release/x.y.z your-git-username pull
./release-helper.sh x.y.z release/x.y.z your-git-username tag
./release-helper.sh x.y.z release/x.y.z your-git-username push-tags

Note: release-helper.sh will supply the -m argument to git tag to create an annotated tag. Only annotated or signed tags can be pushed to Gerrit.

Backup documentation wiki databases

NOTE: This step is now deprecated since we are in the process of moving all mediawiki-based documentation into the platform git repository.

This step is only necessary for major/minor releases, not for service releases.

The wiki databases to be backed up are:

These are MediaWiki installations. The only sane way to "tag" the documentation is to back up the mysql database backing the wiki. Should the wiki be required at a later time for some reason, we'll put the documentation up then in a separate Mediawiki installation.

  1. Dump documentation wiki databases using dump-wikis.sh script.
  2. Put the generated backup x.y.z.tar.gz at /var/backup/simantics-releases/x.y.z/wiki/

Compile change log entry

Disseminate information about the release

Newsletter template:

Hello everyone,

Simantics release x.y.z[.w] has been released. Head over to
https://www.simantics.org/redmine/news/<news number>
for the release news.

Best regards,
Simantics Release Engineering Team

Redmine news template:

Title: Simantics x.y.z[.w] released

Simantics x.y.z[.w] was released on <date>.
Please find change log at: [[simantics-platform:Simantics_xyzw|Simantics x.y.z[.w]]]

Insert some general thoughts on the release...

TODO