1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
# SPDX-License-Identifier: GPL-3.0-or-later
# Haketilo proxy data and configuration (instantiatable HaketiloState subtype).
#
# This file is part of Hydrilla&Haketilo.
#
# Copyright (C) 2022 Wojtek Kosior
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
#
# I, Wojtek Kosior, thereby promise not to sue for violation of this
# file's license. Although I request that you do not make use this code
# in a proprietary program, I am not going to enforce this in court.
"""
This module contains logic for keeping track of all settings, rules, mappings
and resources.
"""
# Enable using with Python 3.7.
from __future__ import annotations
import sqlite3
import typing as t
import dataclasses as dc
from pathlib import Path
from ...exceptions import HaketiloException
from ...translations import smart_gettext as _
from ... import url_patterns
from ... import item_infos
from .. import state as st
from .. import policies
from .. import simple_dependency_satisfying as sds
from . import base
from . import mappings
from . import repos
from . import _operations
here = Path(__file__).resolve().parent
@dc.dataclass(frozen=True, unsafe_hash=True)
class ConcreteRepoIterationRef(st.RepoIterationRef):
pass
@dc.dataclass(frozen=True, unsafe_hash=True)
class ConcreteResourceRef(st.ResourceRef):
pass
@dc.dataclass(frozen=True, unsafe_hash=True)
class ConcreteResourceVersionRef(st.ResourceVersionRef):
pass
@dc.dataclass
class ConcreteHaketiloState(base.HaketiloStateWithFields):
def __post_init__(self) -> None:
sqlite3.enable_callback_tracebacks(True)
self._prepare_database()
self.rebuild_structures()
def _prepare_database(self) -> None:
"""...."""
cursor = self.connection.cursor()
try:
cursor.execute(
'''
SELECT
COUNT(name)
FROM
sqlite_master
WHERE
name = 'general' AND type = 'table';
'''
)
(db_initialized,), = cursor.fetchall()
if not db_initialized:
cursor.executescript((here.parent / 'tables.sql').read_text())
else:
cursor.execute(
'''
SELECT
haketilo_version
FROM
general;
'''
)
(db_haketilo_version,) = cursor.fetchone()
if db_haketilo_version != '3.0b1':
raise HaketiloException(_('err.proxy.unknown_db_schema'))
cursor.execute('PRAGMA FOREIGN_KEYS;')
if cursor.fetchall() == []:
raise HaketiloException(_('err.proxy.no_sqlite_foreign_keys'))
cursor.execute('PRAGMA FOREIGN_KEYS=ON;')
finally:
cursor.close()
def import_packages(self, malcontent_path: Path) -> None:
with self.cursor(transaction=True) as cursor:
_operations._load_packages_no_state_update(
cursor = cursor,
malcontent_path = malcontent_path,
repo_id = 1
)
self.rebuild_structures()
def recompute_dependencies(
self,
extra_requirements: t.Iterable[sds.MappingRequirement] = []
) -> None:
with self.cursor() as cursor:
assert self.connection.in_transaction
_operations._recompute_dependencies_no_state_update(
cursor = cursor,
extra_requirements = extra_requirements
)
self.rebuild_structures()
def repo_store(self) -> st.RepoStore:
return repos.ConcreteRepoStore(self)
def get_repo_iteration(self, repo_iteration_id: str) -> st.RepoIterationRef:
return ConcreteRepoIterationRef(repo_iteration_id)
def mapping_store(self) -> st.MappingStore:
return mappings.ConcreteMappingStore(self)
def mapping_version_store(self) -> st.MappingVersionStore:
return mappings.ConcreteMappingVersionStore(self)
def get_resource(self, resource_id: str) -> st.ResourceRef:
return ConcreteResourceRef(resource_id)
def get_resource_version(self, resource_version_id: str) \
-> st.ResourceVersionRef:
return ConcreteResourceVersionRef(resource_version_id)
def get_payload(self, payload_id: str) -> st.PayloadRef:
raise NotImplementedError()
def get_settings(self) -> st.HaketiloGlobalSettings:
return st.HaketiloGlobalSettings(
mapping_use_mode = st.MappingUseMode.AUTO,
default_allow_scripts = True,
repo_refresh_seconds = 0
)
def update_settings(
self,
*,
mapping_use_mode: t.Optional[st.MappingUseMode] = None,
default_allow_scripts: t.Optional[bool] = None,
repo_refresh_seconds: t.Optional[int] = None
) -> None:
raise NotImplementedError()
def select_policy(self, url: url_patterns.ParsedUrl) -> policies.Policy:
"""...."""
with self.lock:
policy_tree = self.policy_tree
try:
best_priority: int = 0
best_policy: t.Optional[policies.Policy] = None
for factories_set in policy_tree.search(url):
for stored_factory in sorted(factories_set):
factory = stored_factory.item
policy = factory.make_policy(self)
if policy.priority > best_priority:
best_priority = policy.priority
best_policy = policy
except Exception as e:
return policies.ErrorBlockPolicy(
builtin = True,
error = e
)
if best_policy is not None:
return best_policy
if self.get_settings().default_allow_scripts:
return policies.FallbackAllowPolicy()
else:
return policies.FallbackBlockPolicy()
@staticmethod
def make(store_dir: Path) -> 'ConcreteHaketiloState':
connection = sqlite3.connect(
str(store_dir / 'sqlite3.db'),
isolation_level = None,
check_same_thread = False
)
return ConcreteHaketiloState(
store_dir = store_dir,
connection = connection
)
|
