create-new-data-pr.py

#!/usr/bin/env python3
from __future__ import print_function
from github import Github
from argparse import ArgumentParser
import repo_config
from os.path import expanduser
from json import loads
import re
from github_utils import get_git_tree
from _py2with3compatibility import run_cmd, HTTPError, urlopen


def update_tag_version(current_version):
    updated_version = int(current_version) + 1
    if updated_version < 10:
        updated_version = "0%s" % updated_version
    return str(updated_version)


def get_tag_from_string(tag_string=None):
    tag = None
    for i in tag_string.split("\n"):
        m = re.search("(V[0-9]{2}(-[0-9]{2})+)", i)
        if m:
            tag = m.group()
            break
    return tag


if __name__ == "__main__":
    parser = ArgumentParser(usage="%(prog)s <cms-data-repo> <cms-dist-repo> <pull-request-id>")

    parser.add_argument(
        "-r",
        "--data_repo",
        metavar="<cms-data-repo>",
        help="Github data repository name e.g. cms-data/RecoTauTag-TrainingFiles.",
        type=str,
    )
    parser.add_argument(
        "-d",
        "--dist_repo",
        metavar="<cms-dist-repo>",
        help="Github dist repository name e.g. cms-sw/cmsdist.",
        type=str,
        default="",
    )
    parser.add_argument(
        "-p",
        "--pull_request",
        metavar="<pull-request-id>",
        help="Pull request number",
        type=str,
    )
    parser.add_argument(
        "-n", "--no-merge", dest="merge", help="Disable automerge", action="store_false"
    )

    args = parser.parse_args()

    gh = Github(login_or_token=open(expanduser(repo_config.GH_TOKEN)).read().strip())

    data_repo = gh.get_repo(args.data_repo)
    data_prid = int(args.pull_request)
    dist_repo = gh.get_repo(args.dist_repo)
    data_repo_pr = data_repo.get_pull(data_prid)
    if not data_repo_pr.merged:
        print("The pull request isn't merged !")
        exit(0)
    data_pr_base_branch = data_repo_pr.base.ref
    data_repo_default_branch = data_repo.default_branch
    # create master just to exist on the cms-data repo if it doesn't
    if data_repo_default_branch != "master":
        if "master" not in [branch.name for branch in data_repo.get_branches()]:
            data_repo.create_git_ref(
                ref="refs/heads/master",
                sha=data_repo.get_branch(data_repo_default_branch).commit.sha,
            )

    err, out = run_cmd(
        "rm -rf repo && git clone --bare https://github.com/%s -b %s repo && GIT_DIR=repo git log --pretty='%%d'"
        % (args.data_repo, data_pr_base_branch)
    )
    last_release_tag = get_tag_from_string(out)

    if last_release_tag:
        comparison = data_repo.compare(data_pr_base_branch, last_release_tag)
        print("commits behind ", comparison.behind_by)
        create_new_tag = (
            True if comparison.behind_by > 0 else False
        )  # last tag and master commit difference
        print("create new tag ? ", create_new_tag)
    else:
        create_new_tag = True
        last_release_tag = "V00-00-00"

    # if created files and modified files are the same count, all files are new

    response = urlopen(
        "https://api.github.com/repos/%s/pulls/%s" % (args.data_repo, args.pull_request)
    )
    res_json = loads(response.read().decode())
    print(res_json["additions"], res_json["changed_files"], res_json["deletions"])
    files_modified = res_json["deletions"] + res_json["changed_files"]
    only_new_files = files_modified == 0

    # if the latest tag/release compared with master(base) or the pr(head) branch is behind then make new tag
    new_tag = last_release_tag  # in case the tag doesnt change
    if create_new_tag:
        while True:
            print("searching next tag for ", last_release_tag)
            tag_data = last_release_tag.strip("V").split("-")
            if len(tag_data) < 3:
                tag_data.append("00")
            print(tag_data)
            # update minor for now
            if only_new_files:
                tag_data[-1] = update_tag_version(tag_data[-1])
            else:
                tag_data[-2] = update_tag_version(tag_data[-2])
                tag_data[-1] = "00"
            print("New tag data", tag_data)
            new_tag = "V%s" % "-".join(tag_data)
            try:
                has_tag = get_git_tree(new_tag, args.data_repo)
                if "sha" not in has_tag:
                    break
                last_release_tag = last_release_tag + "-00-00"
            except HTTPError as e:
                break
        print(new_tag)
        tag_ref = data_repo.create_git_ref(
            ref="refs/tags/" + new_tag, sha=data_repo.get_branch(data_pr_base_branch).commit.sha
        )
    default_cms_dist_branch = dist_repo.default_branch
    repo_name_only = args.data_repo.split("/")[1]
    repo_tag_pr_branch = "update-" + repo_name_only + "-to-" + new_tag

    sb = dist_repo.get_branch(default_cms_dist_branch)
    dest_branch = None  #

    try:
        dist_repo.create_git_ref(ref="refs/heads/" + repo_tag_pr_branch, sha=sb.commit.sha)
        dest_branch = dist_repo.get_branch(repo_tag_pr_branch)
    except Exception as e:
        print(str(e))
        dest_branch = dist_repo.get_branch(repo_tag_pr_branch)
        print("Branch exists")

    # file with tags on the default branch
    cmsswdatafile = "data/cmsswdata.txt"
    content_file = dist_repo.get_contents(cmsswdatafile, repo_tag_pr_branch)
    cmsswdatafile_raw = content_file.decoded_content
    new_content = ""
    # remove the existing line no matter where it is and put the new line right under default

    count = 0  # omit first line linebreaker
    repo_name_str = "%s=" % repo_name_only
    for line in cmsswdatafile_raw.splitlines():
        line = line.decode()
        updated_line = None
        if "[default]" in line:
            updated_line = "\n" + line + "\n" + repo_name_only + "=" + new_tag + ""
        elif line.strip().startswith(repo_name_str):
            updated_line = ""
        else:
            if count > 0:
                updated_line = "\n" + line
            else:
                updated_line = line
        count = count + 1
        new_content = new_content + updated_line

    mssg = "Update tag for " + repo_name_only + " to " + new_tag
    update_file_object = dist_repo.update_file(
        cmsswdatafile, mssg, new_content, content_file.sha, repo_tag_pr_branch
    )

    # file with tags on the default branch
    cmsswdataspec = "cmsswdata.spec"
    content_file = dist_repo.get_contents(cmsswdataspec, repo_tag_pr_branch)
    cmsswdatafile_raw = content_file.decoded_content
    new_content = []
    data_pkg = " data-" + repo_name_only
    added_pkg = False
    for line in cmsswdatafile_raw.splitlines():
        line = line.decode()
        new_content.append(line)
        if not line.startswith("Requires: "):
            continue
        if line.strip().endswith(data_pkg):
            added_pkg = False
            break
        if not added_pkg:
            added_pkg = True
            new_content.append("Requires:" + data_pkg)

    if added_pkg:
        mssg = "Update cmssdata spec for" + data_pkg
        update_file_object = dist_repo.update_file(
            cmsswdataspec, mssg, "\n".join(new_content), content_file.sha, repo_tag_pr_branch
        )

    title = "Update tag for " + repo_name_only + " to " + new_tag
    body = "Move " + repo_name_only + " data to new tag, see \n" + data_repo_pr.html_url + "\n"
    change_tag_pull_request = dist_repo.create_pull(
        title=title, body=body, base=default_cms_dist_branch, head=repo_tag_pr_branch
    )

    if args.merge and (data_pr_base_branch == data_repo_default_branch):
        print("cms-data PR was for default branch, will merge now")
        change_tag_pull_request.create_issue_comment(
            "This PR will be merged automatically because cms-data PR was for default branch"
        )
        change_tag_pull_request.merge()