mirror of https://github.com/oxen-io/session-ios
Create JobQueue
nielsandriesse
5 years ago
parent
28172b4ed2
commit
d80804ca5a
@ -1,2 +1,9 @@
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public protocol Job { }
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public protocol Job : class {
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var delegate: JobDelegate? { get set }
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var failureCount: UInt { get set }
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static var maxFailureCount: UInt { get }
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func execute()
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}
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@ -0,0 +1,6 @@
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public protocol JobDelegate {
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func handleJobSucceeded(_ job: Job)
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func handleJobFailed(_ job: Job, with error: Error)
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}
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@ -0,0 +1,21 @@
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public final class JobQueue : JobDelegate {
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public static let shared = JobQueue()
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public func add(_ job: Job, using transaction: Any) {
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Configuration.shared.storage.persist(job, using: transaction)
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job.delegate = self
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job.execute()
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}
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public func handleJobSucceeded(_ job: Job) {
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// Mark the job as succeeded
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}
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public func handleJobFailed(_ job: Job, with error: Error) {
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// Persist the job
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// Retry it if the max failure count hasn't been reached
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// Propagate the error otherwise
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}
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}
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@ -0,0 +1,16 @@
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#import <Foundation/Foundation.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface NSTimer (Session)
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// This method avoids the classic NSTimer retain cycle bug by using a weak reference to the target
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+ (NSTimer *)weakScheduledTimerWithTimeInterval:(NSTimeInterval)timeInterval
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target:(id)target
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selector:(SEL)selector
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userInfo:(nullable id)userInfo
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repeats:(BOOL)repeats;
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@end
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NS_ASSUME_NONNULL_END
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@ -0,0 +1,64 @@
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#import <Foundation/Foundation.h>
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#import "NSTimer+Proxying.h"
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#import <objc/runtime.h>
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NS_ASSUME_NONNULL_BEGIN
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@interface NSTimerProxy : NSObject
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@property (nonatomic, weak) id target;
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@property (nonatomic) SEL selector;
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@end
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@implementation NSTimerProxy
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- (void)timerFired:(NSDictionary *)userInfo
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{
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
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[self.target performSelector:self.selector withObject:userInfo];
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#pragma clang diagnostic pop
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}
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@end
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static void *kNSTimer_SN_Proxy = &kNSTimer_SN_Proxy;
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@implementation NSTimer (Session)
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- (NSTimerProxy *)sn_proxy
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{
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return objc_getAssociatedObject(self, kNSTimer_SN_Proxy);
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}
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- (void)sn_setProxy:(NSTimerProxy *)proxy
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{
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#if DEBUG
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assert(proxy != nil);
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#endif
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objc_setAssociatedObject(self, kNSTimer_SN_Proxy, proxy, OBJC_ASSOCIATION_RETAIN);
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}
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+ (NSTimer *)weakScheduledTimerWithTimeInterval:(NSTimeInterval)timeInterval
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target:(id)target
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selector:(SEL)selector
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userInfo:(nullable id)userInfo
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repeats:(BOOL)repeats
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{
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NSTimerProxy *proxy = [NSTimerProxy new];
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proxy.target = target;
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proxy.selector = selector;
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NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:timeInterval
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target:proxy
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selector:@selector(timerFired:)
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userInfo:userInfo
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repeats:repeats];
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[timer sn_setProxy:proxy];
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return timer;
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}
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@end
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NS_ASSUME_NONNULL_END
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