YH_HttpDnsService.m
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//
// YH_HttpDnsService.m
// YH_Mall
//
// Created by jhsonzhi on 16/7/18.
// Copyright © 2016年 YOHO. All rights reserved.
//
#import "YH_HttpDnsService.h"
#import "YH_DNSCacheManager.h"
#import "YH_DNSNetworkManager.h"
#import "YH_DNSDomainModel.h"
#import "YH_DNSUtils.h"
#import <UIKit/UIKit.h>
#ifdef SUPPORT_REQUEST_UDID
#import "OpenUDID.h"
#endif
static const NSTimeInterval processPeriodicTaskSeconds = 60.0;
@interface YH_HttpDnsService ()
@property (strong, nonatomic) YH_DNSCacheManager *cacheManager;
@property (strong, nonatomic) YH_DNSNetworkManager *networkManager;
@property (strong, nonatomic) NSMutableDictionary *runningTask;
@property (strong, nonatomic) NSOperationQueue *taskQueue;
@property (strong, nonatomic) NSTimer *refreshTimer;
@property (copy, nonatomic) NSString *dnsFlag;
@end
@implementation YH_HttpDnsService
+ (instancetype)shareInstance
{
static YH_HttpDnsService *httpDnsService = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
httpDnsService = [[YH_HttpDnsService alloc] init];
});
return httpDnsService;
}
- (instancetype)init{
if (self = [super init]) {
self.cacheManager = [YH_DNSCacheManager sharedInstance];
self.networkManager = [[YH_DNSNetworkManager alloc] init];
self.networkManager.appVersion = [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleVersionKey];
self.networkManager.osVersion = [[UIDevice currentDevice] systemVersion];
#ifdef SUPPORT_REQUEST_UDID
self.networkManager.udid = [OpenUDID value];
#endif
}
return self;
}
- (NSMutableDictionary *)runningTask{
if (!_runningTask) {
_runningTask = [[NSMutableDictionary alloc] init];
}
return _runningTask;
}
- (NSOperationQueue *)taskQueue{
if (!_taskQueue) {
_taskQueue = [[NSOperationQueue alloc] init];
}
return _taskQueue;
}
- (NSTimer *)refreshTimer{
if (!_refreshTimer) {
_refreshTimer = [NSTimer timerWithTimeInterval:processPeriodicTaskSeconds
target:self
selector:@selector(processPeriodicTask)
userInfo:nil
repeats:YES];
}
return _refreshTimer;
}
-(void)dealloc{
_cacheManager = nil;
_networkManager = nil;
_refreshTimer = nil;
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
- (void)checkUpdate:(NSString *)domain {
if (YHDNS_isStrEmpty(domain)) {
return;
}
NSBlockOperation* operation = self.runningTask[domain];
if (operation == nil) {
__weak __typeof(&*self)weakSelf = self;
NSBlockOperation* operation = [NSBlockOperation blockOperationWithBlock:^{
[weakSelf.networkManager fetchHttpDnsByDomain:domain completionHandler:^(YH_DNSHttpDnsPack *dnsPack) {
if(dnsPack){
[weakSelf.cacheManager insertDnsCache:dnsPack];
}
[weakSelf.runningTask performSelectorOnMainThread:@selector(removeObjectForKey:) withObject:domain waitUntilDone:NO];
}];
}];
[self.runningTask setObject:operation forKey:domain];
[self.taskQueue addOperation:operation];
}
}
- (void)setPreResolveHosts:(NSArray *)hosts {
for (NSString* domain in hosts) {
NSString* host = domain;
if ([domain hasPrefix:@"http://"]) {
NSURL* url = [NSURL URLWithString:domain];
host = url.host;
}
[self checkUpdate:host];
}
}
- (NSString *)getIpByHost:(NSString *)urlString {
NSURL* url = [NSURL URLWithString:urlString];
if (url.host == nil) {
NSLog(@"ERROR:%s:%d get host from (%@) failed ",__FUNCTION__,__LINE__, urlString);
return nil;
}
if ([YH_DNSUtils isIpV4Address:url.host]) {
NSLog(@"ERROR:%s:%d get host from (%@) failed ",__FUNCTION__,__LINE__, urlString);
return urlString;
}
NSDictionary *resultDic = [[self.cacheManager getDnsCacheByHost:url.host] copy];
NSString *resultIpSting = resultDic[@"ip"];
BOOL isNeedPrefetch = [resultDic[@"prefetch"] boolValue];
if (!resultDic || YHDNS_isStrEmpty(resultIpSting) || isNeedPrefetch) {
NSLog(@"fetch host:%@ isNeedPrefetch:%d",url.host,isNeedPrefetch);
[self checkUpdate:url.host];
}else{
NSLog(@"INFO:%s:%d get host:(%@) ip:(%@) failed ",__FUNCTION__,__LINE__, urlString ,resultIpSting);
}
return resultIpSting;
}
- (void)addTimer{
[[NSRunLoop currentRunLoop] addTimer:self.refreshTimer forMode:NSDefaultRunLoopMode];
[[NSRunLoop currentRunLoop] run];
NSLog(@"INFO:===> Start HttpDNS timer and add in runlloop!");
}
- (void)enableScheduledTask{
if ([_refreshTimer isValid]) {
[_refreshTimer invalidate];
_refreshTimer = nil;
}
[self performSelectorInBackground:@selector(addTimer) withObject:nil];
[self.refreshTimer fire];
}
- (void)disableScheduledTask{
if ([self.refreshTimer isValid]) {
[self.refreshTimer invalidate];
_refreshTimer = nil;
NSLog(@"INFO:===> Stop HttpDNS timer!");
}
}
#pragma mark- 定时任务 －刷新域名对应IP
- (void)processPeriodicTask {
NSLog(@"start process periodic(time:%.1f) task,is main thread:%@",processPeriodicTaskSeconds,[NSThread isMainThread]? @"YES" :@"NO");
NSArray* expiredDomainInfos = [self.cacheManager getExpireDnsCache];
for (YH_DNSDomainModel* model in expiredDomainInfos) {
[self checkUpdate:model.domain];
}
}
@end