Backup TFS 2013 release 3 build and release definitions

backupBuildRelease.ps1

function Backup-TFSReleaseDefinitions
{
    param([object]$tfsprojs,$tfsurl = 'mytfsinstance.com', $tfscollection = 'Defaultcollection', $apiversion = '3.0-preview',[string]$Path = 'c:\temp\tfsprojects')
    $tfsInstance =  "http://$($tfsurl):8080/tfs/$tfsCollection"

    foreach($tfsproj in $tfsprojs.value)
    { 
        $tfsProjName = $tfsproj.name
        $tfsdev = "$tfsInstance/$tfsProjName"
        $projectIds = Invoke-RestMethod -Method Get -UseDefaultCredentials -uri "$tfsdev/_apis/release/definitions?api-version=$apiversion" -ContentType application/json   
        foreach($projectid in $projectIds)
        {
            $relnumber = $projectid.value.id 
            foreach($rel in $relnumber)
            {
              $relDef = invoke-restmethod -method get -UseDefaultCredentials -uri "$tfsdev/_apis/release/definitions/$($rel)?api-version=$apiversion" -ContentType application/json
              $exportPath = "$path/$tfsProjName"
              if(-not (test-path $exportPath))
              {
                  mkdir $exportPath
              }
              $jsonDoc = $reldef | convertto-json -Depth 100
              $jsonDoc | out-file -FilePath "$exportPath\$($reldef.name).json"
            }
            
        }
    }
    
}
<#
    .Synopsis
    Gets all the TFS projects for a given instance
    .EXAMPLE
    $tfsProjects = get-TFSProjects -tfsurl 'http://yourinstance.com:8080/tfs/Defaultcollection'
    .OUTPUTS
    Returns an object of projects found in tfs.
      count value                                                                                                                                                                                                       
    ----- -----                                                                                                                                                                                                       
    19 {@{id=f7039238-b489-45d1-b9d1-c4c9222497c3; name=Marketing; url=http://yourinstance.com:8080/tfs/DefaultCollection/_apis/projects/[guid]; state=wellFormed; revisi...

#>
function Get-TFSProjects
{
    Param($tfsUrl,$apiversion = '3.0-preview')
    Invoke-RestMethod -method get -UseDefaultCredentials -uri "$tfsurl/_apis/projects?api-version=$apiversion"
}
function Backup-TFSbuildDefinitions
{
    param([object]$tfsprojs,$tfsurl = 'mytfsinstance.com', $tfscollection = 'Defaultcollection', $apiversion = '3.0-preview',[string]$Path = 'c:\temp\tfsbuilds')
    #"$Uri/$DefaultCollection/$TeamProject/_apis/build/definitions?api-version=2.0&name=$buildName"
    $tfsInstance =  "http://$($tfsurl):8080/tfs/$tfsCollection"

    foreach($tfsproj in $tfsprojs.value)
    { 
        $tfsProjName = $tfsproj.name
        $tfsdev = "$tfsInstance/$tfsProjName"
        $projectIds = Invoke-RestMethod -Method Get -UseDefaultCredentials -uri "$tfsdev/_apis/build/definitions?api-version=$apiversion" -ContentType application/json   
        foreach($projectid in $projectIds)
        {
            $relnumber = $projectid.value.id 
            foreach($rel in $relnumber)
            {
              $relDef = invoke-restmethod -method get -UseDefaultCredentials -uri "$tfsdev/_apis/build/definitions/$($rel)?api-version=$apiversion" -ContentType application/json
              $exportPath = "$path/$tfsProjName"
              if(-not (test-path $exportPath))
              {
                  mkdir $exportPath
              }
              $jsonDoc = $reldef | convertto-json -Depth 100
              $jsonDoc | out-file -FilePath "$exportPath\$($reldef.name).json"
            }
            
        }
    }
    
}