esp-idf/tools/ci/python_packages/gitlab_api.py

import argparse
import os
import re
import tarfile
import tempfile
import time
import zipfile
from functools import wraps
from typing import Any, Callable, Dict, List, Optional

import gitlab

TR = Callable[..., Any]


def retry(func: TR) -> TR:
    """
    This wrapper will only catch several exception types associated with
    "network issues" and retry the whole function.
    """
    @wraps(func)
    def wrapper(self: 'Gitlab', *args: Any, **kwargs: Any) -> Any:
        retried = 0
        while True:
            try:
                res = func(self, *args, **kwargs)
            except (IOError, EOFError, gitlab.exceptions.GitlabError) as e:
                if isinstance(e, gitlab.exceptions.GitlabError):
                    if e.response_code == 500:
                        # retry on this error
                        pass
                    elif e.response_code == 404 and os.environ.get('LOCAL_GITLAB_HTTPS_HOST', None):
                        # remove the environment variable "LOCAL_GITLAB_HTTPS_HOST" and retry
                        os.environ.pop('LOCAL_GITLAB_HTTPS_HOST', None)
                    else:
                        # other GitlabErrors aren't retried
                        raise e
                retried += 1
                if retried > self.DOWNLOAD_ERROR_MAX_RETRIES:
                    raise e  # get out of the loop
                else:
                    print('Network failure in {}, retrying ({})'.format(getattr(func, '__name__', '(unknown callable)'), retried))
                    time.sleep(2 ** retried)  # wait a bit more after each retry
                    continue
            else:
                break
        return res
    return wrapper


class Gitlab(object):
    JOB_NAME_PATTERN = re.compile(r'(\w+)(\s+(\d+)/(\d+))?')

    DOWNLOAD_ERROR_MAX_RETRIES = 3

    def __init__(self, project_id: Optional[int] = None):
        config_data_from_env = os.getenv('PYTHON_GITLAB_CONFIG')
        if config_data_from_env:
            # prefer to load config from env variable
            with tempfile.NamedTemporaryFile('w', delete=False) as temp_file:
                temp_file.write(config_data_from_env)
            config_files = [temp_file.name]  # type: Optional[List[str]]
        else:
            # otherwise try to use config file at local filesystem
            config_files = None
        self._init_gitlab_inst(project_id, config_files)

    @retry
    def _init_gitlab_inst(self, project_id: Optional[int], config_files: Optional[List[str]]) -> None:
        gitlab_id = os.getenv('LOCAL_GITLAB_HTTPS_HOST')  # if None, will use the default gitlab server
        self.gitlab_inst = gitlab.Gitlab.from_config(gitlab_id=gitlab_id, config_files=config_files)
        self.gitlab_inst.auth()
        if project_id:
            self.project = self.gitlab_inst.projects.get(project_id)
        else:
            self.project = None

    @retry
    def get_project_id(self, name: str, namespace: Optional[str] = None) -> int:
        """
        search project ID by name

        :param name: project name
        :param namespace: namespace to match when we have multiple project with same name
        :return: project ID
        """
        projects = self.gitlab_inst.projects.list(search=name)
        res = []
        for project in projects:
            if namespace is None:
                if len(projects) == 1:
                    res.append(project.id)
                    break

            if project.namespace['path'] == namespace:
                if project.name == name:
                    res.insert(0, project.id)
                else:
                    res.append(project.id)

        if not res:
            raise ValueError("Can't find project")
        return int(res[0])

    @retry
    def download_artifacts(self, job_id: int, destination: str) -> None:
        """
        download full job artifacts and extract to destination.

        :param job_id: Gitlab CI job ID
        :param destination: extract artifacts to path.
        """
        job = self.project.jobs.get(job_id)

        with tempfile.NamedTemporaryFile(delete=False) as temp_file:
            job.artifacts(streamed=True, action=temp_file.write)

        with zipfile.ZipFile(temp_file.name, 'r') as archive_file:
            archive_file.extractall(destination)

    @retry
    def download_artifact(self, job_id: int, artifact_path: str, destination: Optional[str] = None) -> List[bytes]:
        """
        download specific path of job artifacts and extract to destination.

        :param job_id: Gitlab CI job ID
        :param artifact_path: list of path in artifacts (relative path to artifact root path)
        :param destination: destination of artifact. Do not save to file if destination is None
        :return: A list of artifact file raw data.
        """
        job = self.project.jobs.get(job_id)

        raw_data_list = []

        for a_path in artifact_path:
            try:
                data = job.artifact(a_path)  # type: bytes
            except gitlab.GitlabGetError as e:
                print("Failed to download '{}' from job {}".format(a_path, job_id))
                raise e
            raw_data_list.append(data)
            if destination:
                file_path = os.path.join(destination, a_path)
                try:
                    os.makedirs(os.path.dirname(file_path))
                except OSError:
                    # already exists
                    pass
                with open(file_path, 'wb') as f:
                    f.write(data)

        return raw_data_list

    @retry
    def find_job_id(self, job_name: str, pipeline_id: Optional[str] = None, job_status: str = 'success') -> List[Dict]:
        """
        Get Job ID from job name of specific pipeline

        :param job_name: job name
        :param pipeline_id: If None, will get pipeline id from CI pre-defined variable.
        :param job_status: status of job. One pipeline could have multiple jobs with same name after retry.
                           job_status is used to filter these jobs.
        :return: a list of job IDs (parallel job will generate multiple jobs)
        """
        job_id_list = []
        if pipeline_id is None:
            pipeline_id = os.getenv('CI_PIPELINE_ID')
        pipeline = self.project.pipelines.get(pipeline_id)
        jobs = pipeline.jobs.list(all=True)
        for job in jobs:
            match = self.JOB_NAME_PATTERN.match(job.name)
            if match:
                if match.group(1) == job_name and job.status == job_status:
                    job_id_list.append({'id': job.id, 'parallel_num': match.group(3)})
        return job_id_list

    @retry
    def download_archive(self, ref: str, destination: str, project_id: Optional[int] = None) -> str:
        """
        Download archive of certain commit of a repository and extract to destination path

        :param ref: commit or branch name
        :param destination: destination path of extracted archive file
        :param project_id: download project of current instance if project_id is None
        :return: root path name of archive file
        """
        if project_id is None:
            project = self.project
        else:
            project = self.gitlab_inst.projects.get(project_id)

        with tempfile.NamedTemporaryFile(delete=False) as temp_file:
            try:
                project.repository_archive(sha=ref, streamed=True, action=temp_file.write)
            except gitlab.GitlabGetError as e:
                print('Failed to archive from project {}'.format(project_id))
                raise e

        print('archive size: {:.03f}MB'.format(float(os.path.getsize(temp_file.name)) / (1024 * 1024)))

        with tarfile.open(temp_file.name, 'r') as archive_file:
            root_name = archive_file.getnames()[0]
            archive_file.extractall(destination)

        return os.path.join(os.path.realpath(destination), root_name)

    def get_job_tags(self, job_id: int) -> str:
        """
        Get tags of a job

        :param job_id: job id
        :return: comma-separated tags of the job
        """
        job = self.project.jobs.get(job_id)
        return ','.join(job.tag_list)


def main() -> None:
    parser = argparse.ArgumentParser()
    parser.add_argument('action')
    parser.add_argument('project_id', type=int)
    parser.add_argument('--pipeline_id', '-i', type=int, default=None)
    parser.add_argument('--ref', '-r', default='master')
    parser.add_argument('--job_id', '-j', type=int, default=None)
    parser.add_argument('--job_name', '-n', default=None)
    parser.add_argument('--project_name', '-m', default=None)
    parser.add_argument('--destination', '-d', default=None)
    parser.add_argument('--artifact_path', '-a', nargs='*', default=None)
    args = parser.parse_args()

    gitlab_inst = Gitlab(args.project_id)
    if args.action == 'download_artifacts':
        gitlab_inst.download_artifacts(args.job_id, args.destination)
    if args.action == 'download_artifact':
        gitlab_inst.download_artifact(args.job_id, args.artifact_path, args.destination)
    elif args.action == 'find_job_id':
        job_ids = gitlab_inst.find_job_id(args.job_name, args.pipeline_id)
        print(';'.join([','.join([str(j['id']), j['parallel_num']]) for j in job_ids]))
    elif args.action == 'download_archive':
        gitlab_inst.download_archive(args.ref, args.destination)
    elif args.action == 'get_project_id':
        ret = gitlab_inst.get_project_id(args.project_name)
        print('project id: {}'.format(ret))
    elif args.action == 'get_job_tags':
        ret = gitlab_inst.get_job_tags(args.job_id)
        print(ret)


if __name__ == '__main__':
    main()