Add default config when init

update JsonEncoder
2026-03-24 20:47:54 +00:00 · 2020-10-16 16:55:33 +08:00
parent c0259bc699
commit dc2ac9cc90
7 changed files with 153 additions and 65 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,11 @@

 ## 0.1

+### 0.1.2
+
+- Add default config when init.
+- Update JsonEncoder.
+
 ### 0.1.1

 - Add in-memory support.
--- a/fastapi_cache/init.py
+++ b/fastapi_cache/init.py
@@ -1,17 +1,34 @@
+from typing import Callable
+
+from fastapi_cache.coder import Coder, JsonCoder
+from fastapi_cache.key_builder import default_key_builder
+
+
 class FastAPICache:
    _backend = None
    _prefix = None
    _expire = None
    _init = False
+    _coder = None
+    _key_builder = None

    @classmethod
-    def init(cls, backend, prefix: str = "", expire: int = None):
+    def init(
+        cls,
+        backend,
+        prefix: str = "",
+        expire: int = None,
+        coder: Coder = JsonCoder,
+        key_builder: Callable = default_key_builder,
+    ):
        if cls._init:
            return
        cls._init = True
        cls._backend = backend
        cls._prefix = prefix
        cls._expire = expire
+        cls._coder = coder
+        cls._key_builder = key_builder

    @classmethod
    def get_backend(cls):
@@ -25,3 +42,11 @@ class FastAPICache:
    @classmethod
    def get_expire(cls):
        return cls._expire
+
+    @classmethod
+    def get_coder(cls):
+        return cls._coder
+
+    @classmethod
+    def get_key_builder(cls):
+        return cls._key_builder
--- a/fastapi_cache/coder.py
+++ b/fastapi_cache/coder.py
@@ -1,7 +1,40 @@
+import datetime
 import json
 import pickle  # nosec:B403
+from decimal import Decimal
 from typing import Any

+import dateutil.parser
+
+CONVERTERS = {
+    "date": dateutil.parser.parse,
+    "datetime": dateutil.parser.parse,
+    "decimal": Decimal,
+}
+
+
+class JsonEncoder(json.JSONEncoder):
+    def default(self, obj):
+        if isinstance(obj, datetime.datetime):
+            return {"val": obj.strftime("%Y-%m-%d %H:%M:%S"), "_spec_type": "datetime"}
+        elif isinstance(obj, datetime.date):
+            return {"val": obj.strftime("%Y-%m-%d"), "_spec_type": "date"}
+        elif isinstance(obj, Decimal):
+            return {"val": str(obj), "_spec_type": "decimal"}
+        else:
+            return super().default(obj)
+
+
+def object_hook(obj):
+    _spec_type = obj.get("_spec_type")
+    if not _spec_type:
+        return obj
+
+    if _spec_type in CONVERTERS:
+        return CONVERTERS[_spec_type](obj["val"])
+    else:
+        raise TypeError("Unknown {}".format(_spec_type))
+

 class Coder:
    @classmethod
@@ -16,11 +49,11 @@ class Coder:
 class JsonCoder(Coder):
    @classmethod
    def encode(cls, value: Any):
-        return json.dumps(value)
+        return json.dumps(value, cls=JsonEncoder)

    @classmethod
    def decode(cls, value: Any):
-        return json.loads(value)
+        return json.loads(value, object_hook=object_hook)


 class PickleCoder(Coder):
--- a/fastapi_cache/decorator.py
+++ b/fastapi_cache/decorator.py
@@ -1,30 +1,14 @@
 from functools import wraps
 from typing import Callable, Optional, Type

-from starlette.requests import Request
-from starlette.responses import Response
-
 from fastapi_cache import FastAPICache
-from fastapi_cache.coder import Coder, JsonCoder
-
-
-def default_key_builder(
-    func,
-    namespace: Optional[str] = "",
-    request: Request = None,
-    response: Response = None,
-    *args,
-    **kwargs,
-):
-    prefix = FastAPICache.get_prefix()
-    cache_key = f"{prefix}:{namespace}:{func.__module__}:{func.__name__}:{args}:{kwargs}"
-    return cache_key
+from fastapi_cache.coder import Coder


 def cache(
    expire: int = None,
-    coder: Type[Coder] = JsonCoder,
-    key_builder: Callable = default_key_builder,
+    coder: Type[Coder] = None,
+    key_builder: Callable = None,
    namespace: Optional[str] = "",
 ):
    """
@@ -39,6 +23,13 @@ def cache(
    def wrapper(func):
        @wraps(func)
        async def inner(*args, **kwargs):
+            nonlocal coder
+            nonlocal expire
+            nonlocal key_builder
+
+            coder = coder or FastAPICache.get_coder()
+            expire = expire or FastAPICache.get_expire()
+            key_builder = key_builder or FastAPICache.get_key_builder()
            request = kwargs.get("request")
            backend = FastAPICache.get_backend()
            cache_key = key_builder(func, namespace, *args, **kwargs)
--- a/fastapi_cache/key_builder.py
+++ b/fastapi_cache/key_builder.py
@@ -0,0 +1,19 @@
+from typing import Optional
+
+from starlette.requests import Request
+from starlette.responses import Response
+
+
+def default_key_builder(
+    func,
+    namespace: Optional[str] = "",
+    request: Request = None,
+    response: Response = None,
+    *args,
+    **kwargs,
+):
+    from fastapi_cache import FastAPICache
+
+    prefix = FastAPICache.get_prefix()
+    cache_key = f"{prefix}:{namespace}:{func.__module__}:{func.__name__}:{args}:{kwargs}"
+    return cache_key
--- a/poetry.lock
+++ b/poetry.lock
@@ -107,7 +107,7 @@ marker = "sys_platform == \"win32\" or platform_system == \"Windows\""
 name = "colorama"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "0.4.3"
+version = "0.4.4"

 [[package]]
 category = "main"
@@ -204,7 +204,7 @@ description = "iniconfig: brain-dead simple config-ini parsing"
 name = "iniconfig"
 optional = false
 python-versions = "*"
-version = "1.0.1"
+version = "1.1.1"

 [[package]]
 category = "dev"
@@ -212,7 +212,7 @@ description = "A Python utility / library to sort Python imports."
 name = "isort"
 optional = false
 python-versions = ">=3.6,<4.0"
-version = "5.5.5"
+version = "5.6.4"

 [package.extras]
 colors = ["colorama (>=0.4.3,<0.5.0)"]
@@ -342,6 +342,17 @@ version = ">=0.12"
 checkqa_mypy = ["mypy (0.780)"]
 testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xmlschema"]

+[[package]]
+category = "main"
+description = "Extensions to the standard Python datetime module"
+name = "python-dateutil"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,>=2.7"
+version = "2.8.1"
+
+[package.dependencies]
+six = ">=1.5"
+
 [[package]]
 category = "dev"
 description = "YAML parser and emitter for Python"
@@ -356,10 +367,10 @@ description = "Alternative regular expression module, to replace re."
 name = "regex"
 optional = false
 python-versions = "*"
-version = "2020.9.27"
+version = "2020.10.15"

 [[package]]
-category = "dev"
+category = "main"
 description = "Python 2 and 3 compatibility utilities"
 name = "six"
 optional = false
@@ -451,7 +462,7 @@ marker = "python_version < \"3.8\""
 name = "zipp"
 optional = false
 python-versions = ">=3.6"
-version = "3.3.0"
+version = "3.3.1"

 [package.extras]
 docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
@@ -463,7 +474,8 @@ memcache = ["aiomcache"]
 redis = ["aioredis"]

 [metadata]
-content-hash = "7383e3309fd4b12030141bf2ea503188c36ffb892b2a3ae154d7a21c3ea875be"
+content-hash = "59799bfd90773b87a5c13b46ae557fdd313cd696925ba209c4e17cbae44b718b"
+lock-version = "1.0"
 python-versions = "^3.7"

 [metadata.files]
@@ -504,8 +516,7 @@ click = [
    {file = "click-7.1.2.tar.gz", hash = "sha256:d2b5255c7c6349bc1bd1e59e08cd12acbbd63ce649f2588755783aa94dfb6b1a"},
 ]
 colorama = [
-    {file = "colorama-0.4.3-py2.py3-none-any.whl", hash = "sha256:7d73d2a99753107a36ac6b455ee49046802e59d9d076ef8e47b61499fa29afff"},
-    {file = "colorama-0.4.3.tar.gz", hash = "sha256:e96da0d330793e2cb9485e9ddfd918d456036c7149416295932478192f4436a1"},
+    {file = "colorama-0.4.4-py2.py3-none-any.whl", hash = "sha256:9f47eda37229f68eee03b24b9748937c7dc3868f906e8ba69fbcbdd3bc5dc3e2"},
 ]
 fastapi = [
    {file = "fastapi-0.61.1-py3-none-any.whl", hash = "sha256:6cc31bb555dd8ca956d1d227477d661e4ac012337242a41d36214ffbda78bfe9"},
@@ -580,12 +591,11 @@ importlib-metadata = [
    {file = "importlib_metadata-2.0.0.tar.gz", hash = "sha256:77a540690e24b0305878c37ffd421785a6f7e53c8b5720d211b211de8d0e95da"},
 ]
 iniconfig = [
-    {file = "iniconfig-1.0.1-py3-none-any.whl", hash = "sha256:80cf40c597eb564e86346103f609d74efce0f6b4d4f30ec8ce9e2c26411ba437"},
-    {file = "iniconfig-1.0.1.tar.gz", hash = "sha256:e5f92f89355a67de0595932a6c6c02ab4afddc6fcdc0bfc5becd0d60884d3f69"},
+    {file = "iniconfig-1.1.1.tar.gz", hash = "sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32"},
 ]
 isort = [
-    {file = "isort-5.5.5-py3-none-any.whl", hash = "sha256:87355bbc3465bf096a8bf09c4dd949b6b9294958c478740442fd9fbd01b817f2"},
-    {file = "isort-5.5.5.tar.gz", hash = "sha256:47e0fdc03aed3a9ba507284f90e4b3b6f2a4725d919816a7b547675befc38ffb"},
+    {file = "isort-5.6.4-py3-none-any.whl", hash = "sha256:dcab1d98b469a12a1a624ead220584391648790275560e1a43e54c5dceae65e7"},
+    {file = "isort-5.6.4.tar.gz", hash = "sha256:dcaeec1b5f0eca77faea2a35ab790b4f3680ff75590bfcb7145986905aab2f58"},
 ]
 mccabe = [
    {file = "mccabe-0.6.1-py2.py3-none-any.whl", hash = "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42"},
@@ -646,6 +656,10 @@ pytest = [
    {file = "pytest-6.1.1-py3-none-any.whl", hash = "sha256:7a8190790c17d79a11f847fba0b004ee9a8122582ebff4729a082c109e81a4c9"},
    {file = "pytest-6.1.1.tar.gz", hash = "sha256:8f593023c1a0f916110285b6efd7f99db07d59546e3d8c36fc60e2ab05d3be92"},
 ]
+python-dateutil = [
+    {file = "python-dateutil-2.8.1.tar.gz", hash = "sha256:73ebfe9dbf22e832286dafa60473e4cd239f8592f699aa5adaf10050e6e1823c"},
+    {file = "python_dateutil-2.8.1-py2.py3-none-any.whl", hash = "sha256:75bb3f31ea686f1197762692a9ee6a7550b59fc6ca3a1f4b5d7e32fb98e2da2a"},
+]
 pyyaml = [
    {file = "PyYAML-5.3.1-cp27-cp27m-win32.whl", hash = "sha256:74809a57b329d6cc0fdccee6318f44b9b8649961fa73144a98735b0aaf029f1f"},
    {file = "PyYAML-5.3.1-cp27-cp27m-win_amd64.whl", hash = "sha256:240097ff019d7c70a4922b6869d8a86407758333f02203e0fc6ff79c5dcede76"},
@@ -660,33 +674,33 @@ pyyaml = [
    {file = "PyYAML-5.3.1.tar.gz", hash = "sha256:b8eac752c5e14d3eca0e6dd9199cd627518cb5ec06add0de9d32baeee6fe645d"},
 ]
 regex = [
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+    {file = "regex-2020.10.15-cp39-cp39-manylinux1_i686.whl", hash = "sha256:85b733a1ef2b2e7001aff0e204a842f50ad699c061856a214e48cfb16ace7d0c"},
+    {file = "regex-2020.10.15-cp39-cp39-manylinux1_x86_64.whl", hash = "sha256:af1f5e997dd1ee71fb6eb4a0fb6921bf7a778f4b62f1f7ef0d7445ecce9155d6"},
+    {file = "regex-2020.10.15-cp39-cp39-manylinux2010_i686.whl", hash = "sha256:b5eeaf4b5ef38fab225429478caf71f44d4a0b44d39a1aa4d4422cda23a9821b"},
+    {file = "regex-2020.10.15-cp39-cp39-manylinux2010_x86_64.whl", hash = "sha256:aeac7c9397480450016bc4a840eefbfa8ca68afc1e90648aa6efbfe699e5d3bb"},
+    {file = "regex-2020.10.15-cp39-cp39-win32.whl", hash = "sha256:698f8a5a2815e1663d9895830a063098ae2f8f2655ae4fdc5dfa2b1f52b90087"},
+    {file = "regex-2020.10.15-cp39-cp39-win_amd64.whl", hash = "sha256:a51e51eecdac39a50ede4aeed86dbef4776e3b73347d31d6ad0bc9648ba36049"},
+    {file = "regex-2020.10.15.tar.gz", hash = "sha256:d25f5cca0f3af6d425c9496953445bf5b288bb5b71afc2b8308ad194b714c159"},
 ]
 six = [
    {file = "six-1.15.0-py2.py3-none-any.whl", hash = "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"},
@@ -741,6 +755,6 @@ uvicorn = [
    {file = "uvicorn-0.12.1.tar.gz", hash = "sha256:a461e76406088f448f36323f5ac774d50e5a552b6ccb54e4fca8d83ef614a7c2"},
 ]
 zipp = [
-    {file = "zipp-3.3.0-py3-none-any.whl", hash = "sha256:eed8ec0b8d1416b2ca33516a37a08892442f3954dee131e92cfd92d8fe3e7066"},
-    {file = "zipp-3.3.0.tar.gz", hash = "sha256:64ad89efee774d1897a58607895d80789c59778ea02185dd846ac38394a8642b"},
+    {file = "zipp-3.3.1-py3-none-any.whl", hash = "sha256:16522f69653f0d67be90e8baa4a46d66389145b734345d68a257da53df670903"},
+    {file = "zipp-3.3.1.tar.gz", hash = "sha256:c1532a8030c32fd52ff6a288d855fe7adef5823ba1d26a29a68fd6314aa72baa"},
 ]
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "fastapi-cache2"
-version = "0.1.1"
+version = "0.1.2"
 description = "Cache for FastAPI"
 authors = ["long2ice <long2ice@gmail.com>"]
 license = "Apache-2.0"
@@ -20,6 +20,7 @@ fastapi = "*"
 uvicorn = "*"
 aioredis = {version = "*", optional = true}
 aiomcache = {version = "*", optional = true}
+python-dateutil = "*"

 [tool.poetry.dev-dependencies]
 flake8 = "*"