/// <summary>
/// this is our callback for all of the AWS triggers and notifications. We do not
/// use the AWS LambdaSerializer because we are processing more than
/// one type of JSON data packages on the same endpoint.
///
///Use this name to register with Lambda
///BalsamicSolutions.CodeCommit2Slack::BalsamicSolutions.CodeCommit2Slack.LambdaNotificationHandlers::HandleEvent
/// </summary>
/// <param name="input"></param>
/// <param name="context"></param>
public void HandleEvent(Stream input, ILambdaContext context)
{
string jsonAsText = string.Empty;
Console.WriteLine("Dispatching CodeCommitEvent");
if (null != input)
{
StreamReader streamReader = new StreamReader(input);
jsonAsText = streamReader.ReadToEnd();
}
Console.WriteLine($"CodeCommitEvent: received the following JSON: {jsonAsText}");
if (_Enabled)
{
//instead of desesralizing the object, look for the "Records" text which indicates we have a
//branch notification, its faster than parsing the entire jsonData twice for a typed object
int indexOfRecords = jsonAsText.IndexOf("\"Records\"", 0, StringComparison.OrdinalIgnoreCase);
if (-1 == indexOfRecords)
{
PullTypes.CodeCommitPullEvent codeCommitEvent = jsonAsText.FromJson <PullTypes.CodeCommitPullEvent>();
HandlePullEvent(codeCommitEvent, context);
}
else
{
BranchTypes.CodeCommitBranchEvent codeCommitEvent = jsonAsText.FromJson <BranchTypes.CodeCommitBranchEvent>();
HandleBranchEvent(codeCommitEvent, context);
}
}
else
{
Console.WriteLine("This Lambda handler requires additional configuration");
}
Console.WriteLine("Dispatch of CodeCommitEvent complete");
}
public void HandleBranchEvent(BranchTypes.CodeCommitBranchEvent input, ILambdaContext context)
{
Console.WriteLine("Starting HandleBranchEvent");
if (_Enabled)
{
string commitId = "Unknown CommitID";
string refBranch = "Unknown Branch";
BranchTypes.Record ccRecord = input.Records[0];
BranchTypes.Codecommit commitRecord = ccRecord.Codecommit;
//I have only seen multiple references nodes in the test data
//so we only process record [0]
if (null != commitRecord.References && commitRecord.References.Length > 0)
{
bool isDelete = false;
bool isCreated = false;
BranchTypes.Reference ccRef = commitRecord.References[0];
commitId = ccRef.Commit;
refBranch = ccRef.Ref;
if (ccRef.Deleted.HasValue)
{
isDelete = ccRef.Deleted.Value;
}
else if (ccRef.Created.HasValue)
{
isCreated = true;
}
string[] branchParts = refBranch.Split('/');
string branchName = branchParts[branchParts.Length - 1];
string eventSourceARN = ccRecord.EventSourceArn;
string[] eventSourcARNParts = eventSourceARN.Split(':');
string repositoryName = eventSourcARNParts[5];
string regionName = eventSourcARNParts[3];
Amazon.RegionEndpoint regionEndPoint = Amazon.RegionEndpoint.GetBySystemName(regionName);
string userIdentityARN = ccRecord.UserIdentityArn;
string eventTimeAsText = ccRecord.EventTime;
DateTime eventTime = DateTime.Parse(eventTimeAsText).ToUniversalTime();
DateTime localTime = TimeZoneInfo.ConvertTimeFromUtc(eventTime, _TimeZone);
using (AmazonCodeCommitClient codeCommit = new AmazonCodeCommitClient(_AwsCredentials, regionEndPoint))
{
GetRepositoryResponse repositoryInfo = GetRepositoryInfo(codeCommit, repositoryName);
GetCommitResponse commitInfo = GetCommitInfo(codeCommit, repositoryName, commitId);
string authorName = userIdentityARN.LastSplitElement('/');
string notificationMessage = "Unknown Lambda Event";
if (isCreated)
{
notificationMessage = GenerateBranchCreateMessage(authorName, localTime, repositoryName, branchName);
}
else if (isDelete)
{
notificationMessage = GenerateBranchDeleteMessage(authorName, localTime, repositoryName, branchName);
}
else
{
string commitParentId = "HEAD";
if (commitInfo.Commit.Parents.Count > 0)
{
commitParentId = commitInfo.Commit.Parents[0];
}
List <Difference> commitDifferences = GetCommitDifferences(codeCommit, repositoryName, commitId, commitParentId, _MaxChangesWarningThreshold);
if (_MaxChangesWarningThreshold > 0 && commitDifferences.Count >= _MaxChangesWarningThreshold)
{
notificationMessage = GenerateBranchWarningMessage(authorName, commitId, localTime, commitInfo.Commit.Message, repositoryName, branchName);
}
else
{
notificationMessage = GenerateBranchCommitMessage(authorName, commitId, localTime, commitInfo.Commit.Message, repositoryName, branchName, commitDifferences);
}
}
SlackClient slackClient = new SlackClient(_SlackUrl);
slackClient.PostMessage(notificationMessage);
}
}
else
{
Console.WriteLine("No References node, nothing to process");
}
}
Console.WriteLine("Completed HandleBranchEvent");
}
