How to migrate a SVN repository to Github
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This page explains how to migrate a SVN repository and its history to a Git repository on GitHub.
Prerequistes
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Ubuntu
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awk :
sudo apt-get install awk -
subversion:
sudo apt-get install subversion -
git:
sudo apt-get install git(tested with git 2.17.1) -
git-svn:
sudo apt-get install git-svn
Migration steps
Retrieve the list of all Subversion committers
A first step will be to retrieve the committers list of the repository.
Checkout a copy of the repository to migrate in a location of your choice: svn checkout <svn-repository-url>
Then run the following command from the locally checkouted repository to retrieve the svn committers:
svn log -q | awk -F '|' '/^r/ {sub("^ ", "", $2); sub(" $", "", $2); print $2" = "$2" <"$2">"}' | sort -u > authors-transform.txt
In Git, the commit author needs to have a name and email listed. So update authors-transform.txt accordingly.
eg: wbates = wbates <wbates> into wbates = Walter Bates <wbates@acme.org>
Clone the Subversion repository using git-svn
git svn clone <svn-repository-url>/<bonita-repo-name> --no-metadata --stdlayout --no-minimize-url -A authors-transform.txt ~/temp
This will do the standard git-svn transformation (using the authors-transform.txt file you created in the step above) and place the git repository in the ~/temp folder inside your home directory.
Note: <bonita-repo-name> should have trunk, branches, tags children folder.
Create a .gitignore
Add a .gitignore in ~/temp with the following content
bin
.classpath
/src-providedGroovy
/template
/h2_database
/process_configurations
/META-INF
.settings
target/
/build.properties
#provided web widgets
/web_widgets/pb*/
#web component preferenes
/web_widgets/.metadata
/web_fragments/.metadata
/web_page/.metadata
/web_page/*/js
/web_fragments/*/*.js
/web_widgets/*/*.js
#bdm jar dependency is regenerate from bom.xml file
/lib/bdm-client-pojo.jar
#only used as user preferences
/database_connectors_propertiesDouble check that all files listed in the .gitignore are not present in ~/temp folder.
Remove them otherwise.
Then add all the changes and commit:
git add -A
git commit -m 'Add .gitignore.'