Notify a comment on AWS CodeCommit to Teams Webhook

notify_codecommit_comment_to_teams.py

import json
import urllib.request

teams_endpoint = "https://outlook.office.com/webhook/.../IncomingWebhook/..."


def build_text(detail, attr):
    def get_username_from_arn(arn):
        return arn.split(":")[-1]

    def get_last_comment(comments):
        return comments[-1]["commentText"]

    def get_pullrequest_url(notificationBody):
        return notificationBody[notificationBody.find("https://") :]

    username = get_username_from_arn(detail["callerUserArn"])
    repository_name = detail["repositoryName"]
    file_path = attr["filePath"]
    last_comment = get_last_comment(attr["comments"])
    url = get_pullrequest_url(detail["notificationBody"])

    text = []
    text.append(
        "### {} commented on {}/{}:".format(username, repository_name, file_path)
    )
    text.append(last_comment)
    text.append("[View it on CodeCommit](" + url + ")")

    return text


def lambda_handler(event, context):
    message = json.loads(event["Records"][0]["Sns"]["Message"])
    print("message: {}".format(message))

    detail = message["detail"]
    attr = message["additionalAttributes"]
    text = build_text(detail, attr)

    body = {"text": "\n\n".join(text)}

    req = urllib.request.Request(
        teams_endpoint,
        data=json.dumps(body).encode("utf8"),
        headers={"content-type": "application/json"},
    )
    urllib.request.urlopen(req)