auto zone: support set default zones

Author: yangsen

QiniuSDK/Common/QNAutoZone.h

@@ -10,12 +10,18 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+@class QNFixedZone;
 @interface QNAutoZone : QNZone
 
 + (instancetype)zoneWithUcHosts:(NSArray *)ucHosts;
 
 + (void)clearCache;
 
+/**
+ * 当 查询失败时，会使用 zones 进行上传，默认不配置。
+ */
+- (void)setDefaultZones:(NSArray <QNFixedZone *> *)zones;
+
 @end
 
 NS_ASSUME_NONNULL_END

QiniuSDK/Common/QNAutoZone.m

@@ -97,6 +97,7 @@ @implementation QNUCQuerySingleFlightValue
 @interface QNAutoZone()
 
 @property(nonatomic, strong)NSArray *ucHosts;
+@property(nonatomic, strong)QNFixedZone *defaultZone;
 @property(nonatomic, strong)NSMutableArray <QNRequestTransaction *> *transactions;
 
 @end
@@ -128,6 +129,10 @@ - (instancetype)init{
     return self;
 }
 
+- (void)setDefaultZones:(NSArray <QNFixedZone *> *)zones {
+    self.defaultZone = [QNFixedZone combineZones:zones];
+}
+
 - (QNZonesInfo *)getZonesInfoWithToken:(QNUpToken * _Nullable)token
                             actionType:(QNActionType)actionType {
 
@@ -196,9 +201,17 @@ - (void)preQuery:(QNUpToken *)token actionType:(QNActionType)actionType on:(QNPr
             if (responseInfo.isConnectionBroken) {
                 ret(kQNNetworkError, responseInfo, metrics);
             } else {
-                QNZonesInfo *zonesInfo = [[QNFixedZone localsZoneInfo] getZonesInfoWithToken:token];
-                if ([zonesInfo isValid]) {
-                    [[QNAutoZoneCache share] cache:zonesInfo forKey:cacheKey];
+                QNZonesInfo *info = nil;
+                if (self.defaultZone) {
+                    QNZonesInfo * infoP = [self.defaultZone getZonesInfoWithToken:token actionType:actionType];
+                    if (infoP && [infoP isValid]) {
+                        [infoP toTemporary];
+                        info = infoP;
+                    }
+                }
+                
+                if (info) {
+                    [[QNAutoZoneCache share] cache:info forKey:cacheKey];
                     ret(0, responseInfo, metrics);
                 } else {
                     ret(-1, responseInfo, metrics);

QiniuSDK/Common/QNFixedZone.h

@@ -83,6 +83,11 @@ NS_ASSUME_NONNULL_BEGIN
  */
 + (QNFixedZone *)localsZoneInfo;
 
+/**
+ *  合并区域
+ */
++ (QNFixedZone *)combineZones:(NSArray<QNFixedZone *> *)zones;
+
 @end
 
 NS_ASSUME_NONNULL_END

QiniuSDK/Common/QNFixedZone.m

@@ -103,6 +103,17 @@ + (QNFixedZone *)localsZoneInfo{
                        [QNFixedZone zoneNa0],
                        [QNFixedZone zoneApNorthEast1],
                        [QNFixedZone zoneAs0]];
+    QNFixedZone *zone = [self combineZones:zones];
+    if (zone) {
+        [zone.zonesInfo toTemporary];
+    }
+    return zone;
+}
+
++ (QNFixedZone *)combineZones:(NSArray<QNFixedZone *> *)zones {
+    if (zones == nil || zones.count == 0) {
+        return nil;
+    }
 
     NSMutableArray <QNZoneInfo *> *zoneInfoArray = [NSMutableArray array];
     for (QNFixedZone *zone in zones) {