This is an example of a go-git repository backed by Aerospike.
git has a very well defined storage system, the .git directory, present on any repository. This is the place where git stores all the objects, references and configuration. This information is stored in plain files.
Our original go-git version was designed to work in memory, some time after we added support to read the .git, and now we have added support for fully customized storages.
This means that the internal database of any repository can be saved and accessed on any support, databases, distributed filesystems, etc. This functionality is pretty similar to the libgit2 backends
What do you need? You need an aerospike server. The easiest way to get one for testing is running the official docker container provided by Aerospike:
docker run -d -p 3000:3000 --name aerospike aerospike/aerospike-server
Now, we need the sample code.
go get -u github.com/mcuadros/go-git-aerospike/...
Running this command will make the binary go-git-aerospike. if you have GOPATH on your PATH, you are ready to go. If not, this is a great moment.
Running the command go-git-aerospike with the clone option followed by the URL of a git repository clones the repository into the database, storing all the git objects in it:
go-git-aerospike clone https://github.com/src-d/flamingo.git
The repository is stored in the aerospike database. This means that all the internal objects like commits, trees, blobs and tags are records in different sets in the test namespace:
aql> SELECT hash, type, url FROM test.commit
+--------------------------------------------+----------+-------+-----------------------------------+ | hash | type | blob | url | +--------------------------------------------+----------+-------+-----------------------------------+ | "c94450c805876e49b38d2ff1103b8c09cdd2aef4" | "commit" | 00 00 | ...github.com/src-d/flamingo.git" | | "7f71640877608ee9cfe584fac216f03f9aebb523" | "commit" | 00 00 | ...github.com/src-d/flamingo.git" | | "255f097450dd91812c4eb7b9e0d3a4f034f2acaf" | "commit" | 00 00 | ...github.com/src-d/flamingo.git" | +--------------------------------------------+----------+-------+-----------------------------------+ 102 rows in set (0.071 secs)
And also the references and the configuration (remotes) are stored in it.
aql> SELECT name, target, url FROM test.reference
+------------------------------+--------------------------------------------+-----------------------+ | name | target | url | +------------------------------+--------------------------------------------+-----------------------+ | "HEAD" | "ref: refs/heads/master" | ...rc-d/flamingo.git" | | "refs/heads/master" | "ed3e1aa2e46584cb803ed356cb5d8855f6d05660" | ...rc-d/flamingo.git" | | "refs/remotes/origin/master" | "ed3e1aa2e46584cb803ed356cb5d8855f6d05660" | ...rc-d/flamingo.git" | +------------------------------+--------------------------------------------+-----------------------+ 3 rows in set (0.046 secs)
Running the log command, a git log --online like result is printed:
go-git-aerospike log https://github.com/src-d/flamingo.git
The URL of the repository is the way we identify the objects in the sets, since we can clone several repositories to the same database.
ed3e1aa ID is also allowed in SendFormTo and SayTo 2031f3e Handle close of message channel in WaitForMessage e784495 Add SendFormTo and SayTo 447748a Make text in attachments accept markdown 595b4e7 Form author name and author icon and text groupfield 0f2e315 Test for InvokeAction 0dc7c9a Handle closing of channel b3f167b Implement InvokeAction
The process has read all the commits and all the needed objects from the aerospike sets.
If you want to explore the database, you can execute the aql tool and run some queries:
docker run -it aerospike/aerospike-tools aql -h 172.17.0.1 aql> SELECT * FROM test;