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|
# -*- coding: utf-8 -*-
# Copyright: (c) 2020-2021, Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
"""A facade for interfacing with multiple Galaxy instances."""
from __future__ import annotations
import typing as t
if t.TYPE_CHECKING:
from ansible.galaxy.api import CollectionVersionMetadata
from ansible.galaxy.collection.concrete_artifact_manager import (
ConcreteArtifactsManager,
)
from ansible.galaxy.dependency_resolution.dataclasses import (
Candidate, Requirement,
)
from ansible.galaxy.api import GalaxyAPI, GalaxyError
from ansible.module_utils.common.text.converters import to_text
from ansible.utils.display import Display
display = Display()
class MultiGalaxyAPIProxy:
"""A proxy that abstracts talking to multiple Galaxy instances."""
def __init__(self, apis: t.Iterable[GalaxyAPI], concrete_artifacts_manager: ConcreteArtifactsManager, offline: bool = False) -> None:
"""Initialize the target APIs list."""
self._apis = apis
self._concrete_art_mgr = concrete_artifacts_manager
self._offline = offline # Prevent all GalaxyAPI calls
@property
def is_offline_mode_requested(self):
return self._offline
def _assert_that_offline_mode_is_not_requested(self) -> None:
if self.is_offline_mode_requested:
raise NotImplementedError("The calling code is not supposed to be invoked in 'offline' mode.")
def _get_collection_versions(self, requirement: Requirement) -> t.Iterator[tuple[GalaxyAPI, str]]:
"""Helper for get_collection_versions.
Yield api, version pairs for all APIs,
and reraise the last error if no valid API was found.
"""
if self._offline:
return
found_api = False
last_error: Exception | None = None
api_lookup_order = (
(requirement.src, )
if isinstance(requirement.src, GalaxyAPI)
else self._apis
)
for api in api_lookup_order:
try:
versions = api.get_collection_versions(requirement.namespace, requirement.name)
except GalaxyError as api_err:
last_error = api_err
except Exception as unknown_err:
display.warning(
"Skipping Galaxy server {server!s}. "
"Got an unexpected error when getting "
"available versions of collection {fqcn!s}: {err!s}".
format(
server=api.api_server,
fqcn=requirement.fqcn,
err=to_text(unknown_err),
)
)
last_error = unknown_err
else:
found_api = True
for version in versions:
yield api, version
if not found_api and last_error is not None:
raise last_error
def get_collection_versions(self, requirement: Requirement) -> t.Iterable[tuple[str, GalaxyAPI]]:
"""Get a set of unique versions for FQCN on Galaxy servers."""
if requirement.is_concrete_artifact:
return {
(
self._concrete_art_mgr.
get_direct_collection_version(requirement),
requirement.src,
),
}
api_lookup_order = (
(requirement.src, )
if isinstance(requirement.src, GalaxyAPI)
else self._apis
)
return set(
(version, api)
for api, version in self._get_collection_versions(
requirement,
)
)
def get_collection_version_metadata(self, collection_candidate: Candidate) -> CollectionVersionMetadata:
"""Retrieve collection metadata of a given candidate."""
self._assert_that_offline_mode_is_not_requested()
api_lookup_order = (
(collection_candidate.src, )
if isinstance(collection_candidate.src, GalaxyAPI)
else self._apis
)
last_err: t.Optional[Exception]
for api in api_lookup_order:
try:
version_metadata = api.get_collection_version_metadata(
collection_candidate.namespace,
collection_candidate.name,
collection_candidate.ver,
)
except GalaxyError as api_err:
last_err = api_err
except Exception as unknown_err:
# `verify` doesn't use `get_collection_versions` since the version is already known.
# Do the same as `install` and `download` by trying all APIs before failing.
# Warn for debugging purposes, since the Galaxy server may be unexpectedly down.
last_err = unknown_err
display.warning(
"Skipping Galaxy server {server!s}. "
"Got an unexpected error when getting "
"available versions of collection {fqcn!s}: {err!s}".
format(
server=api.api_server,
fqcn=collection_candidate.fqcn,
err=to_text(unknown_err),
)
)
else:
self._concrete_art_mgr.save_collection_source(
collection_candidate,
version_metadata.download_url,
version_metadata.artifact_sha256,
api.token,
version_metadata.signatures_url,
version_metadata.signatures,
)
return version_metadata
raise last_err
def get_collection_dependencies(self, collection_candidate: Candidate) -> dict[str, str]:
# FIXME: return Requirement instances instead?
"""Retrieve collection dependencies of a given candidate."""
if collection_candidate.is_concrete_artifact:
return (
self.
_concrete_art_mgr.
get_direct_collection_dependencies
)(collection_candidate)
return (
self.
get_collection_version_metadata(collection_candidate).
dependencies
)
def get_signatures(self, collection_candidate: Candidate) -> list[str]:
self._assert_that_offline_mode_is_not_requested()
namespace = collection_candidate.namespace
name = collection_candidate.name
version = collection_candidate.ver
last_err: Exception | None = None
api_lookup_order = (
(collection_candidate.src, )
if isinstance(collection_candidate.src, GalaxyAPI)
else self._apis
)
for api in api_lookup_order:
try:
return api.get_collection_signatures(namespace, name, version)
except GalaxyError as api_err:
last_err = api_err
except Exception as unknown_err:
# Warn for debugging purposes, since the Galaxy server may be unexpectedly down.
last_err = unknown_err
display.warning(
"Skipping Galaxy server {server!s}. "
"Got an unexpected error when getting "
"available versions of collection {fqcn!s}: {err!s}".
format(
server=api.api_server,
fqcn=collection_candidate.fqcn,
err=to_text(unknown_err),
)
)
if last_err:
raise last_err
return []
|
