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添加外部获取缓存方法 #119

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添加外部获取缓存方法 #119

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3 changes: 1 addition & 2 deletions lib/src/core/manager.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -116,8 +116,7 @@ class CacheManager {
ICacheStore? diskCacheStore,
Future<bool>? memoryCacheFuture,
Future<bool>? diskCacheFuture) async {
var result1 =
(null == memoryCacheStore) ? true : (await memoryCacheFuture!);
var result1 = (null == memoryCacheStore) ? true : (await memoryCacheFuture!);
var result2 = (null == diskCacheStore) ? true : (await diskCacheFuture!);
return result1 && result2;
}
Expand Down
50 changes: 34 additions & 16 deletions lib/src/manager_dio.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ import 'package:dio/dio.dart';
import 'package:dio_http_cache/src/core/config.dart';
import 'package:dio_http_cache/src/core/manager.dart';
import 'package:dio_http_cache/src/core/obj.dart';
import 'package:flutter/foundation.dart';

const DIO_CACHE_KEY_TRY_CACHE = "dio_cache_try_cache";
const DIO_CACHE_KEY_MAX_AGE = "dio_cache_max_age";
Expand Down Expand Up @@ -38,6 +39,31 @@ class DioCacheManager {
return _interceptor;
}

///获取缓存方法
Future<Map?> getCacheWithUrl({required String url, String method = "GET", Map? params, dynamic data}) async {
if (params != null) {
var query = Transformer.urlEncodeMap(params, ListFormat.multi);
url += "?$query";
}
Uri _uri = Uri.parse(url);
// Uri _uri = Uri.http(url, unencodedPath)
String primaryKey = _getPrimaryKeyFromUri(_uri);
String key = "$method-$primaryKey";
// GET-134.175.182.139/app/city/440100/top-submitter
String subKey = _getSubKeyFromUri(_uri, data: data ?? null);
CacheObj? _obj = await _manager.pullFromCacheBeforeMaxAge(key, subKey: subKey);
if (null != _obj) {
dynamic data = _obj.content;
data = jsonDecode(utf8.decode(data));
debugPrint("\ngetCacheWithUrl, url: $url,\nkey:$key, subKey:$subKey \ndata: $data");
// return _buildResponse(_obj, _obj.statusCode, options);
return data;
} else {
debugPrint("\ngetCacheWithUrl, url: $url,\nkey: $key, subKey: $subKey \ndata: null");
return null;
}
}

_onRequest(RequestOptions options, RequestInterceptorHandler handler) async {
if ((options.extra[DIO_CACHE_KEY_TRY_CACHE] ?? false) != true) {
return handler.next(options);
Expand All @@ -47,17 +73,14 @@ class DioCacheManager {
}
var responseDataFromCache = await _pullFromCacheBeforeMaxAge(options);
if (null != responseDataFromCache) {
return handler.resolve(
_buildResponse(
responseDataFromCache, responseDataFromCache.statusCode, options),
true);
return handler.resolve(_buildResponse(
responseDataFromCache, responseDataFromCache.statusCode, options), true);
}
return handler.next(options);
}

_onResponse(Response response, ResponseInterceptorHandler handler) async {
if ((response.requestOptions.extra[DIO_CACHE_KEY_TRY_CACHE] ?? false) ==
true &&
if ((response.requestOptions.extra[DIO_CACHE_KEY_TRY_CACHE] ?? false) == true &&
response.statusCode != null &&
response.statusCode! >= 200 &&
response.statusCode! < 300) {
Expand All @@ -68,8 +91,7 @@ class DioCacheManager {

_onError(DioError e, ErrorInterceptorHandler handler) async {
if ((e.requestOptions.extra[DIO_CACHE_KEY_TRY_CACHE] ?? false) == true) {
var responseDataFromCache =
await _pullFromCacheBeforeMaxStale(e.requestOptions);
var responseDataFromCache = await _pullFromCacheBeforeMaxStale(e.requestOptions);
if (null != responseDataFromCache) {
var response = _buildResponse(responseDataFromCache,
responseDataFromCache.statusCode, e.requestOptions);
Expand Down Expand Up @@ -101,8 +123,7 @@ class DioCacheManager {
return Response(
data: data,
headers: headers,
requestOptions: options.copyWith(
extra: options.extra..remove(DIO_CACHE_KEY_TRY_CACHE)),
requestOptions: options.copyWith(extra: options.extra..remove(DIO_CACHE_KEY_TRY_CACHE)),
statusCode: statusCode ?? 200);
}

Expand Down Expand Up @@ -152,10 +173,8 @@ class DioCacheManager {
// try to get maxAge and maxStale from cacheControl
Map<String, String?> parameters;
try {
parameters = HeaderValue.parse(
"${HttpHeaders.cacheControlHeader}: $cacheControl",
parameterSeparator: ",",
valueSeparator: "=")
parameters = HeaderValue.parse("${HttpHeaders.cacheControlHeader}: $cacheControl",
parameterSeparator: ",", valueSeparator: "=")
.parameters;
_maxAge = _tryGetDurationFromMap(parameters, "s-maxage");
if (null == _maxAge) {
Expand Down Expand Up @@ -186,8 +205,7 @@ class DioCacheManager {
callback(_maxAge, maxStale);
}

Duration? _tryGetDurationFromMap(
Map<String, String?> parameters, String key) {
Duration? _tryGetDurationFromMap(Map<String, String?> parameters, String key) {
if (parameters.containsKey(key)) {
var value = int.tryParse(parameters[key]!);
if (null != value && value >= 0) {
Expand Down