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Git Migrator for Bitbucket onprem

Support

Stash or bitbucket on-prem has multiple entities for which we support migration which are:

  • Repository
  • Repository Public/Private status
  • Pull requests
  • Pull request comments
  • Pull request review comments
  • Webhooks
  • Branch Rules

Items that would not imported or imported differently:

  • Task lists: Task lists are imported as normal comments
  • Emoji reactions
  • Pull request reviewers and approvers
  • Any attachment
  • LFS objects
  • Webhooks: Some webhook events are not supported. You can check supported triggers here

Estimating export duration

Export will depend on the size of repo and its pull request. A repo which has more pull request but less comments will take more time than one which has more comments and lesser pull requests.

Prerequisites

To export projects from stash, you must have admin access in for the project to successfully export all the supported entities.

Users

All the users encountered anywhere are stored by email and can be found in users.json in the exported zip file.

Installing

You can install the migrator via github releases or run make build with latest go version present in your system.

Branch Protection and Webhooks

When they are exported, supported Stash branch protection rules and webhooks are stored in zip file, which later during import to harness code are mapped according to:

Webhooks

Bitbucket Server events Harness Code events
Repository Push Branch Created, Branch Updated, Branch Deleted, Tag Created, Tag updated, Tag Deleted
Pull Request Opened PR Created, PR Reopened
Pull Request Merged PR Merged
Pull Request Modified PR Updated
Pull Request Declined PR Closed
Pull Request Source branch updated PR Branch Updated
Pull Request Comment Added PR Comment Created

Branch protection rules

Bitbucket Server rule Harness Code rule
Prevent all changes Block branch creation, Block branch deletion, Require pull request
Prevent deletion Block branch deletion
Prevent rewriting history, Prevent changes without a pull request Require pull request

Commands

As a quick start you can run

./migrator stash git-export --project <project name> --repository <repo-name> --host <host-url> --username <stash-username> --token <token> <zip-folder-path>

where you have to replace all values enclosed in brackets <>.

You can also provide more advanced options. You can look at those via help:

./migrator stash git-export --help

Application also supports advanced option like resume which can help you resume run from last successful run and avoid overhead of re-running the same commands.

Troubleshooting

General

Export fails due to unresolved host

If project export fails due to unresolved host make sure bitbucket server is reachable from the machine which is running the migrator.

Missing webhooks or branch rules

If you see missing items for any webhooks or branch rules you can refer ExporterLogs.log file in root of zip folder.

Webhooks don't have all the events

As of now all webhook events are not supported and you can check ExporterLogs.log file to get error logs.