Add language docker_image

Author: Jan Eil

pre_commit_mirror_maker/docker_image/.pre-commit-hooks.yaml

@@ -0,0 +1,10 @@
+-   id: {id}
+    name: {name}
+    description: {description!r}
+    entry: '{entry}:{version}'
+    language: {language}
+    '{match_key}': {match_val}
+    args: {args}
+    require_serial: {require_serial}
+    additional_dependencies: {additional_dependencies}
+    minimum_pre_commit_version: {minimum_pre_commit_version!r}

pre_commit_mirror_maker/languages.py

@@ -33,6 +33,30 @@ def rust_get_package_versions(package_name: str) -> list[str]:
     return list(reversed([version['num'] for version in resp['versions']]))
 
 
+def docker_image_get_package_versions(package_name: str) -> list[str]:
+    # If package_name contains a slash, it's a user/org repository,
+    # otherwise it's an official repository
+    if '/' not in package_name:
+        package_name = f'library/{package_name}'
+    base_url = (
+        'https://hub.docker.com/v2/repositories/'
+        f'{package_name}/tags?page_size=100'
+    )
+
+    all_tags: list[str] = []
+    url = base_url
+
+    # Fetch all pages of results
+    while url:
+        resp = json.load(urllib.request.urlopen(url))
+        # Add tags from the current page
+        all_tags.extend(tag['name'] for tag in resp['results'])
+        # Get URL for next page, if any
+        url = resp.get('next')
+
+    return list(reversed(all_tags))
+
+
 def node_get_additional_dependencies(
         package_name: str, package_version: str,
 ) -> list[str]:
@@ -46,6 +70,7 @@ def rust_get_additional_dependencies(
 
 
 LIST_VERSIONS = {
+    'docker_image': docker_image_get_package_versions,
     'node': node_get_package_versions,
     'python': python_get_package_versions,
     'ruby': ruby_get_package_versions,

setup.cfg

@@ -35,6 +35,7 @@ console_scripts =
 pre_commit_mirror_maker =
     all/.pre-commit-hooks.yaml
     all/.version
+    docker_image/.pre-commit-hooks.yaml
     node/.npmignore
     node/*
     python/*

tests/languages_test.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from pre_commit_mirror_maker.languages import docker_image_get_package_versions
 from pre_commit_mirror_maker.languages import node_get_package_versions
 from pre_commit_mirror_maker.languages import python_get_package_versions
 from pre_commit_mirror_maker.languages import ruby_get_package_versions
@@ -39,3 +40,9 @@ def test_rust_get_package_version_output():
     ret = rust_get_package_versions('clap')
     assert ret
     assert_all_text(ret)
+
+
+def test_docker_image_get_package_version_output():
+    ret = docker_image_get_package_versions('alpine/flake8')
+    assert ret
+    assert_all_text(ret)

tests/make_repo_test.py

@@ -236,3 +236,23 @@ def test_rust_integration(in_git_dir):
     assert _cmd('git', 'log', '--oneline')
 
     # TODO: test that the package is installable
+
+
+def test_docker_image_integration(in_git_dir):
+    make_repo(
+        '.',
+        language='docker_image', name='alpine/flake8', description='',
+        entry='alpine/flake8', id='flake8-docker', match_key='files',
+        match_val=r'\.py$', args='[]', require_serial='false',
+        minimum_pre_commit_version='0',
+    )
+    # Our files should exist
+    assert in_git_dir.join('.version').exists()
+    assert in_git_dir.join('.pre-commit-hooks.yaml').exists()
+
+    # Should have made _some_ tags
+    assert _cmd('git', 'tag', '-l')
+    # Should have made _some_ commits
+    assert _cmd('git', 'log', '--oneline')
+
+    # TODO: test that the package is installable