Scm Base

Base class for defining the behavior between screwdriver and source control management systems

Usage

npm install screwdriver-scm-base

Interface

This is a promise based interface for interacting with a source control management system

configure

The configure function takes in an object and resets the configuration values

formatScmUrl

Required parameters:

Parameter	Type	Description
scmUrl	String	Scm Url to format

Expected Outcome

A formatted scm url to be used as a unique key. This function is synchronous.

getPermissions

Required parameters:

Parameter	Type	Description
config	Object	Configuration Object
config.scmUrl	String	The scmUrl to get permissions on
config.token	String	The github token to check permissions on

Expected Outcome

Permissions for a given token on a repository in the form of:

{
    admin: true,
    push: true,
    pull: true
}

Expected Promise response

1. Resolve with a permissions object for the repository
2. Reject if not able to get permissions

getCommitSha

Required parameters:

Parameter	Type	Description
config	Object	Configuration Object
config.scmUrl	String	The scmUrl to get permissions on
config.token	String	The github token to check permissions on

Expected Outcome

The commit sha for a given branch on a repository.

Expected Promise response

1. Resolve with a commit sha string for the given scmUrl
2. Reject if not able to get a sha

updateCommitStatus

The parameters required are:

Parameter	Type	Required	Description
config	Object	true	Configuration Object
config.scmUrl	String	true	The scmUrl to get permissions on
config.token	String	true	The github token to check permissions on
config.sha	String	true	The github sha to update a status for
config.buildStatus	String	true	The screwdriver build status to translate into github commit status
config.url	String	false	The target url for setting up details

Expected Outcome

Update the commit status for a given repository and sha.

Expected Promise Response

1. Resolve when the commit status was updated
2. Reject if the commit status fails to update

getFile

The parameters required are:

Parameter	Type	Required	Description
config	Object	true	Configuration Object
config.scmUrl	String	true	The scmUrl to get permissions on
config.token	String	true	The github token to check permissions on
config.path	String	true	The path to the file on github to read
config.ref	String	false	The reference to the github repo, could be a branch or sha

Expected Outcome

The contents of the file at path in the repository

Expected Promise Response

1. Resolve with the contents of path
2. Reject if the path cannot be downloaded, decoded, or is not a file

Extending

To make use of the validation functions, the functions to override are:

1. formatScmUrl 
2. _getPermissions
3. _getCommitSha
4. _updateCommitStatus
5. _getFile
6. stats 

class MyScm extends ScmBase {
    // Implement the interface
    _getFile(config) {
        // do stuff here to lookup scmUrl
        return Promise.resolve('these are contents that are gotten')
    }
}

const scm = new MyScm({});
scm.getFile({
    scmUrl: 'git@github.com:repo/foo.git#master',
    path: 'screwdriver.yaml',
    token: 'abcdefg'
}).then(data => {
    // do something...
});

Testing

npm test

License

Code licensed under the BSD 3-Clause license. See LICENSE file for terms.