Difference between revisions of "Import from SVN"

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(→‎Add code-repo’s Git repository as new remote)
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> git config --global user.name "Manuele Simi"
 
> git config --global user.name "Manuele Simi"
 
</source>
 
</source>
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Back to the [[Continuous_Integration_procedure_(2019) | CI guide]].

Revision as of 20:41, 10 May 2019

This guide explains how to migrate a project from SVN to Git.

Download migration utilities

For an easy reference in this guide, the migration scripts is downloaded in the home folder: 

 cd $HOME &&  wget https://bitbucket.org/atlassian/svn-migration-scripts/downloads/svn-migration-scripts.jar

Install git-svn

Ubuntu

On Ubuntu, if you you get this output: 

$ java -jar ./svn-migration-scripts.jar verify  
svn-migration-scripts: using version 0.1.56bbc7f 
Git: using version 2.17.1  
Subversion: using version 1.9.7
git: 'svn' is not a git command. See 'git --help'.
The most similar commands are
fsck
mv
show
git-svn: ERROR: Unable to determine version.

You must install the git-svn package by running: 

$ sudo apt install git-svn

Now, you will get something like this: 

$ java -jar ./svn-migration-scripts.jar verify
svn-migration-scripts: using version 0.1.56bbc7f
Git: using version 2.17.1
Subversion: using version 1.9.7
git-svn: using version 2.17.1

Mount a case-sensitive disk image (for Mac OS)

Check if this step is needed by running: 

java -jar ~/svn-migration-scripts.jar verify
 
svn-migration-scripts: using version 0.1.56bbc7f
Git: using version 2.11.0
Subversion: using version 1.9.4
git-svn: using version 2.11.0
You appear to be running on a case-insensitive file-system. This is unsupported, and can result in data loss.

Following the warning, we create a disk image dedicated to the migration activities: 

java -jar ~/svn-migration-scripts.jar create-disk-image 5 GitMigration
 
created: /Users/manuelesimi/GitMigration.sparseimage
/dev/disk2     		 GUID_partition_scheme     		 
/dev/disk2s1   		 EFI                       		 
/dev/disk2s2   		 Apple_HFS                 		 /Users/manuelesimi/GitMigration
The disk image was created successfully and mounted as: /Users/manuelesimi/GitMigration

Extract the author(s) information

 cd ~/GitMigration
 java -jar ~/svn-migration-scripts.jar authors https://svn.d4science.research-infrastructures.eu/gcube/trunk/Common/gxREST  > authors.txt
About to create the authors file.


Alternative (pure SVN): 

svn co https://svn.d4science.research-infrastructures.eu/gcube/trunk/Common/gxREST
cd gxREST
svn log -q | awk -F '|' '/^r/ {sub("^ ", "", $2); sub(" $", "", $2); print $2" = "$2" <"$2">"}' | sort -u > authors.txt

Edit the authors file

You need to edit the file and add the correct email address (i.e. the address configured in the Git service) for each listed author: 

> cat authors.txt
luca.frosini = luca.frosini <luca.frosini@mycompany.com>
lucio.lelii = lucio.lelii <lucio.lelii@mycompany.com>
manuele.simi = manuele.simi <manuele.simi@mycompany.com
> vi authors.txt
 
> cat authors.txt
luca.frosini = luca.frosini <luca.frosini@isti.cnr.it>
lucio.lelii = lucio.lelii <lucio.lelii@isti.cnr.it>
manuele.simi = manuele.simi <manuele.simi@isti.cnr.it>

Clone the SVN repository

git svn clone --authors-file=authors.txt --follow-parent  https://svn.d4science.research-infrastructures.eu/gcube/trunk/Common/gxREST --username manuele.simi gxRest
 
Note: --follow-parent makes it slower, but it’s needed if the SVN folder has been moved around.
 
Initialized empty Git repository in /Users/manuelesimi/GitMigration/gxRest/.git/
 
This may take a while on large repositories
Checked through r173000
 
Checked Ahrough .classpath
 
    A    pom.xml
    A    gxJRS/.classpath
    A    gxJRS/.project
    A    gxJRS/distro/profile.xml
    A    gxJRS/distro/LICENSE
    A    gxJRS/distro/changelog.xml
    A    gxJRS/distro/README
    A    gxJRS/src/test/java/org/gcube/common/gxrest/request/GXWebTargetAdapterRequestTest.java
    A    gxJRS/src/test/java/org/gcube/common/gxrest/request/GXHTTPStringRequestTest.java
    A    gxJRS/src/test/resources/logback-test.xml
    A    gxJRS/src/main/java/org/gcube/common/gxrest/methods/package-info.java
    A    gxJRS/src/main/java/org/gcube/common/gxrest/request/GXHTTPStreamRequest.java
    A    gxJRS/src/main/java/org/gcube/common/gxrest/request/package-info.java
    A    gxJRS/src/main/java/org/gcube/common/gxrest/request/GXWebTargetAdapterRequest.java
 
    [omitted output]
 
    A    gxJRS/src/main/java/org/gcube/common/gxrest/response/entity/SerializableErrorEntityTextWriter.java
    A    gxJRS/src/main/java/org/gcube/common/gxrest/response/entity/SerializableErrorEntityTextReader.java
    M    gxJRS/src/main/java/org/gcube/common/gxrest/response/entity/SerializableErrorEntity.java
r178787 = ac04855b00de818f2095d0784eb68c51a6ec9f77 (refs/remotes/git-svn)
Checked out HEAD:
  https://svn.d4science.research-infrastructures.eu/gcube/trunk/Common/gxREST r178787
creating empty directory: gxHTTP/src/main/resources
creating empty directory: gxJRS/src/main/resources
creating empty directory: gxJRS/src/test/java/org/gcube/common/gxrest/response

Rename “trunk” branch to “master” (if needed)

>git branch
* trunk
>git branch -m trunk master
> git branch
* master

Check the imported history

> git log -10
commit ac04855b00de818f2095d0784eb68c51a6ec9f77
Author: manuele.simi <manuele.simi@isti.cnr.it>
Date:   Sun Mar 31 03:39:06 2019 +0000
 
	Add JAX-RS MessageBodyWriter/Reader responsible for converting SerializableErrorEntity to/from a stream.
 
	git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/Common/gxREST@178787 82a268e6-3cf1-43bd-a215-b396298e98cf
 
commit 6eb3f608dbe31c50578e46c53e16c469a0cc7f0c
Author: manuele.simi <manuele.simi@isti.cnr.it>
Date:   Sat Mar 30 19:58:21 2019 +0000
 
	Tweak some javadoc.
 
	git-svn-id: https://svn.d4science.research-infrastructures.eu/gcube/trunk/Common/gxREST@178786 82a268e6-3cf1-43bd-a215-b396298e98cf

Add code-repo’s Git repository as new remote

Do note that, before running this step, you need to create a new Git repository. 

> git remote add origin https://code-repo.d4science.org/manuele.simi/gxRest.git
> git remote -v
origin    https://code-repo.d4science.org/manuele.simi/gxRest.git (fetch)
origin    https://code-repo.d4science.org/manuele.simi/gxRest.git (push)

Push the local repo to the new remote

> git push --set-upstream --force origin master
Counting objects: 168, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (125/125), done.
Writing objects: 100% (168/168), 39.47 KiB | 0 bytes/s, done.
Total 168 (delta 44), reused 0 (delta 0)
remote: Resolving deltas: 100% (44/44), done.
To https://code-repo.d4science.org/manuele.simi/gxRest.git
 + 4ec6b48...ac04855 master -> master (forced update)
Branch master set up to track remote branch master from origin.

Clone the repo and create a working copy

> cd ~/Work/CNR/Projects/Git/
> git clone https://code-repo.d4science.org/manuele.simi/gxRest.git
Cloning into 'gxRest'...
remote: Counting objects: 168, done.
remote: Compressing objects: 100% (81/81), done.
remote: Total 168 (delta 44), reused 168 (delta 44)
Receiving objects: 100% (168/168), 39.47 KiB | 0 bytes/s, done.
Resolving deltas: 100% (44/44), done.

Fix authors info

Configure the local author info

> git config user.email "manuele.simi@isti.cnr.it"
> git config user.name "Manuele Simi"

Configure the local author for all the Repos on my computer

> git config --global user.email "manuele.simi@isti.cnr.it"
> git config --global user.name "Manuele Simi"

Back to the CI guide.

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