Export git history of all files in a specific folder in Azure Repos for a specific date range

Question

Salesforce Folder structure as below containing numerous classes and meta xml's:

Project
 --src
   --classes
       -- Class A
       -- Class A-Meta.xml
       -- Class B
       -- Class B-Meta.xml
       -- Class N

Problem statement: For each class, I need

1. The history within a date range
2. Output should contain File name, commit id and author name who have made commits in this file within this date range.
3. Export this information in excel/csv/word

Sample output

 Classname  Author commit
 Class A    Dev1   abcd
 Class A    Dev2   pqrs
 Class A    Dev3   uvwz
 Class B    Dev9   yuot
 Class B    Dev1   qwew

I am using VSTS Azure Repos. Open to use git log or any other way of getting this done quickly.

Answer 1

1. The history within a date range

We can use this REST API to retrieve git commits for a project in a date range, we can get commit ID, author and committer Info.

Sample:

GET https://dev.azure.com/{Org name}/_apis/git/repositories/{repositoryId}/commits?searchCriteria.toDate=6/16/2018 12:00:00 AM&searchCriteria.fromDate=6/14/2018 12:00:00 AM&api-version=5.0

We can get the commit Folder name via commit ID

GET https://dev.azure.com/{organization}/{project}/_apis/git/repositories/{repositoryId}/commits/{commitId}/changes?api-version=6.0-preview.1

And get the detail commit info with below API

Get https://dev.azure.com/{organization}/{project}/_apis/git/repositories/{repositoryId}/commits/{commitId}?api-version=6.0-preview.1 

Power shell sample:

$connectionToken="{pat}"
$base64AuthInfo= [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes(":$($connectionToken)"))
$Commits = "https://dev.azure.com/{org name}/_apis/git/repositories/{repo id}/commits?searchCriteria.toDate=9/15/2020 12:00:00 AM&searchCriteria.fromDate=9/1/2020 12:00:00 AM&api-version=5.0" 
$CommitInfo = Invoke-RestMethod -Uri $Commits -Headers @{authorization = "Basic $base64AuthInfo"} -Method Get

ForEach ($ID in $CommitInfo.value.commitId)
{
    Write-Host $ID

    $url = "https://dev.azure.com/{org name}/{project name}/_apis/git/repositories/{repo id}/commits/$($ID)?api-version=6.0-preview.1"
    $base64AuthInfo= [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes(":$($connectionToken)"))
    $CommitDetail = Invoke-RestMethod -Uri $url -Headers @{authorization = "Basic $base64AuthInfo"} -Method Get
    Write-Host "commit ID is" $CommitDetail.commitId "author is" $CommitDetail.author.name "committer is" $CommitDetail.committer.name

}

Result:

Answer 2

Here's how to get the data...

git log \
  --after=<date> --before=<date> \
  --format='%an %H' \
  --name-only

This will return lines like:

f76b3d9e85e511879098c899efbcddb5c55e69cd Crow T. Robot
Project/src/classes/ClassA
Project/src/classes/ClassC

1d4ef40149d9c04d7bc6ea7c9bd9424e939af56f Bob A. Fette
Project/src/classes/ClassB

Indicating in commit f76b3d9e85e511879098c899efbcddb5c55e69cd by Crow T. Robot they changed Project/src/classes/ClassA and Project/src/classes/ClassC.

Then you can write a little program to slurp in that data and processes it as you like.