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* Convert all Python2 to Python3 syntax. * Removes oauth2lib dependency * Replace mockredis with fakeredis * byte/str conversions * Removes nonexisting __nonzero__ in Python3 * Python3 Dockerfile and related * [PROJQUAY-98] Replace resumablehashlib with rehash * PROJQUAY-123 - replace gpgme with python3-gpg * [PROJQUAY-135] Fix unhashable class error * Update external dependencies for Python 3 - Move github.com/app-registry/appr to github.com/quay/appr - github.com/coderanger/supervisor-stdout - github.com/DevTable/container-cloud-config - Update to latest mockldap with changes applied from coreos/mockldap - Update dependencies in requirements.txt and requirements-dev.txt * Default FLOAT_REPR function to str in json encoder and removes keyword assignment True, False, and str were not keywords in Python2... * [PROJQUAY-165] Replace package `bencode` with `bencode.py` - Bencode is not compatible with Python 3.x and is no longer maintained. Bencode.py appears to be a drop-in replacement/fork that is compatible with Python 3. * Make sure monkey.patch is called before anything else ( * Removes anunidecode dependency and replaces it with text_unidecode * Base64 encode/decode pickle dumps/loads when storing value in DB Base64 encodes/decodes the serialized values when storing them in the DB. Also make sure to return a Python3 string instead of a Bytes when coercing for db, otherwise, Postgres' TEXT field will convert it into a hex representation when storing the value. * Implement __hash__ on Digest class In Python 3, if a class defines __eq__() but not __hash__(), its instances will not be usable as items in hashable collections (e.g sets). * Remove basestring check * Fix expected message in credentials tests * Fix usage of Cryptography.Fernet for Python3 (#219) - Specifically, this addresses the issue where Byte<->String conversions weren't being applied correctly. * Fix utils - tar+stream layer format utils - filelike util * Fix storage tests * Fix endpoint tests * Fix workers tests * Fix docker's empty layer bytes * Fix registry tests * Appr * Enable CI for Python 3.6 * Skip buildman tests Skip buildman tests while it's being rewritten to allow ci to pass. * Install swig for CI * Update expected exception type in redis validation test * Fix gpg signing calls Fix gpg calls for updated gpg wrapper, and add signing tests. * Convert / to // for Python3 integer division * WIP: Update buildman to use asyncio instead of trollius. This dependency is considered deprecated/abandoned and was only used as an implementation/backport of asyncio on Python 2.x This is a work in progress, and is included in the PR just to get the rest of the tests passing. The builder is actually being rewritten. * Target Python 3.8 * Removes unused files - Removes unused files that were added accidentally while rebasing - Small fixes/cleanup - TODO tasks comments * Add TODO to verify rehash backward compat with resumablehashlib * Revert "[PROJQUAY-135] Fix unhashable class error" and implements __hash__ instead. This reverts commit 735e38e3c1d072bf50ea864bc7e119a55d3a8976. Instead, defines __hash__ for encryped fields class, using the parent field's implementation. * Remove some unused files ad imports Co-authored-by: Kenny Lee Sin Cheong <kenny.lee@redhat.com> Co-authored-by: Tom McKay <thomasmckay@redhat.com>
80 lines
2.3 KiB
Python
80 lines
2.3 KiB
Python
import os
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from abc import ABCMeta, abstractmethod, abstractproperty
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from collections import namedtuple
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from six import add_metaclass
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MigrationPhase = namedtuple("MigrationPhase", ["name", "alembic_revision", "flags"])
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@add_metaclass(ABCMeta)
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class DataMigration(object):
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@abstractproperty
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def alembic_migration_revision(self):
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"""
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Returns the alembic migration revision corresponding to the currently configured phase.
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"""
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@abstractmethod
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def has_flag(self, flag):
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"""
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Returns true if the data migration's current phase has the given flag set.
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"""
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class NullDataMigration(DataMigration):
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@property
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def alembic_migration_revision(self):
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return "head"
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def has_flag(self, flag):
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raise NotImplementedError()
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class DefinedDataMigration(DataMigration):
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def __init__(self, name, env_var, phases):
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assert phases
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self.name = name
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self.phases = {phase.name: phase for phase in phases}
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# Add a synthetic phase for new installations that skips the entire migration.
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self.phases["new-installation"] = phases[-1]._replace(
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name="new-installation", alembic_revision="head"
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)
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phase_name = os.getenv(env_var)
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if phase_name is None:
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msg = "Missing env var `%s` for data migration `%s`. %s" % (
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env_var,
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self.name,
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self._error_suffix,
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)
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raise Exception(msg)
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current_phase = self.phases.get(phase_name)
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if current_phase is None:
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msg = "Unknown phase `%s` for data migration `%s`. %s" % (
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phase_name,
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self.name,
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self._error_suffix,
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)
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raise Exception(msg)
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self.current_phase = current_phase
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@property
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def _error_suffix(self):
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message = "Available values for this migration: %s. " % (list(self.phases.keys()))
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message += "If this is a new installation, please use `new-installation`."
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return message
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@property
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def alembic_migration_revision(self):
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assert self.current_phase
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return self.current_phase.alembic_revision
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def has_flag(self, flag):
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assert self.current_phase
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return flag in self.current_phase.flags
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