feat: store manager basic implementation

Refs: OPS-16

poetry.lock

@@ -243,6 +243,18 @@ tomli = {version = ">=1", markers = "python_version < \"3.11\""}
 [package.extras]
 dev = ["argcomplete", "attrs (>=19.2)", "hypothesis (>=3.56)", "mock", "pygments (>=2.7.2)", "requests", "setuptools", "xmlschema"]
 
+[[package]]
+name = "tinydb"
+version = "3.15.2"
+description = "TinyDB is a tiny, document oriented database optimized for your happiness :)"
+optional = false
+python-versions = "*"
+groups = ["main"]
+files = [
+    {file = "tinydb-3.15.2-py2.py3-none-any.whl", hash = "sha256:1087ade5300c47dbf9539d9f6dafd53115bd5e85a67d480d8188bdbfa2d9eaf4"},
+    {file = "tinydb-3.15.2.tar.gz", hash = "sha256:f273d9b6d8b1b5e1d094a6eb8b72851b39b81099293344132c73332b60e3b893"},
+]
+
 [[package]]
 name = "tomli"
 version = "2.2.1"
@@ -307,4 +319,4 @@ watchdog = ["watchdog (>=2.3)"]
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.10"
-content-hash = "45718b68919d6fafaaed35cd58dbbb244f8ebb0f0c73de8050cd04b8cae82738"
+content-hash = "29ea72f4fd9859486c77dc4fd0668e0c55b618c56c01c23a0e2ce0a2cf75d026"

pyproject.toml

@@ -2,19 +2,17 @@
 name = "senju"
 version = "0.1.0"
 description = "API / Webservice for Phrases/Words/Kanji/Haiku"
-authors = [
-    {name = "PlexSheep",email = "software@cscherr.de"}
-]
+authors = [{ name = "PlexSheep", email = "software@cscherr.de" }]
 readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
 	"jinja2 (>=3.1.5,<4.0.0)",
 	"pytest>=7.0.0",
 	"flask (>=3.1.0,<4.0.0)",
+	"tinydb (>=3.1.0,<4.0.0)",
 ]
 
 
-
 [build-system]
 requires = ["poetry-core>=2.0.0,<3.0.0"]
 build-backend = "poetry.core.masonry.api"

senju/store_manager.py

@@ -0,0 +1,50 @@
+from typing import Optional
+from tinydb import TinyDB, Query
+from uuid import UUID, uuid1
+from pathlib import Path
+import time
+
+from tinydb.queries import QueryImpl
+
+DEFAULT_DB_PATH: Path = Path("/var/lib/senju.json")
+
+
+class StoreManager:
+    __slots__ = "_db"
+    _db: TinyDB
+
+    def __init__(self, path_to_db: Path = DEFAULT_DB_PATH) -> None:
+        self._db = TinyDB(path_to_db)
+
+    def new_id(self) -> UUID:
+        unix_timestamp: int = int(time.time())
+        _guard: int = 0
+        while True:
+            id = uuid1(node=None, clock_seq=unix_timestamp)
+            if len(self._query(Query().id == id)) > 0:
+                break
+            _guard += 1
+            if _guard > 100:
+                raise Exception(
+                    "tried 100 random UUIDs but found no unused one")
+        return id
+
+    def _query(self, query: QueryImpl) -> list[dict]:
+        return self._db.search(query)
+
+    def load(self, key: UUID) -> Optional[dict]:
+        results = self._query(Query().id == key)
+        if len(results) < 1:
+            raise Exception("foobar")
+        elif len(results) > 2:
+            raise KeyError("The requested item did not exist in our database")
+        else:
+            return results[0]
+
+    def save(self, data: dict) -> UUID:
+        id = self.new_id()
+        self._db.insert({
+            "id": id,
+            "data": data
+        })
+        return id