mirror of
https://github.com/firebase/firebase-ios-sdk
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99 lines
3.3 KiB
Objective-C
99 lines
3.3 KiB
Objective-C
/*
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* Copyright 2018 Google
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import "GDTCORLibrary/Private/GDTCORTransformer.h"
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#import "GDTCORLibrary/Private/GDTCORTransformer_Private.h"
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#import <GoogleDataTransport/GDTCORAssert.h>
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#import <GoogleDataTransport/GDTCORConsoleLogger.h>
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#import <GoogleDataTransport/GDTCOREvent.h>
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#import <GoogleDataTransport/GDTCOREventTransformer.h>
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#import <GoogleDataTransport/GDTCORLifecycle.h>
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#import "GDTCORLibrary/Private/GDTCORStorage.h"
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@implementation GDTCORTransformer
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+ (instancetype)sharedInstance {
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static GDTCORTransformer *eventTransformer;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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eventTransformer = [[self alloc] init];
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});
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return eventTransformer;
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}
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- (instancetype)init {
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self = [super init];
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if (self) {
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_eventWritingQueue =
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dispatch_queue_create("com.google.GDTCORTransformer", DISPATCH_QUEUE_SERIAL);
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_storageInstance = [GDTCORStorage sharedInstance];
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}
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return self;
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}
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- (void)transformEvent:(GDTCOREvent *)event
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withTransformers:(NSArray<id<GDTCOREventTransformer>> *)transformers
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onComplete:(nonnull void (^)(BOOL wasWritten, NSError *error))completion {
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GDTCORAssert(event, @"You can't write a nil event");
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if (!completion) {
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completion = ^(BOOL wasWritten, NSError *_Nullable error) {
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};
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}
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__block GDTCORBackgroundIdentifier bgID = GDTCORBackgroundIdentifierInvalid;
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bgID = [[GDTCORApplication sharedApplication]
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beginBackgroundTaskWithName:@"GDTTransformer"
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expirationHandler:^{
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[[GDTCORApplication sharedApplication] endBackgroundTask:bgID];
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bgID = GDTCORBackgroundIdentifierInvalid;
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}];
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dispatch_async(_eventWritingQueue, ^{
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GDTCOREvent *transformedEvent = event;
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for (id<GDTCOREventTransformer> transformer in transformers) {
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if ([transformer respondsToSelector:@selector(transform:)]) {
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GDTCORLogDebug("Applying a transformer to event %@", event);
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transformedEvent = [transformer transform:transformedEvent];
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if (!transformedEvent) {
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completion(NO, nil);
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return;
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}
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} else {
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GDTCORLogError(GDTCORMCETransformerDoesntImplementTransform,
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@"Transformer doesn't implement transform: %@", transformer);
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completion(NO, nil);
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return;
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}
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}
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[self.storageInstance storeEvent:transformedEvent onComplete:completion];
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// The work is done, cancel the background task if it's valid.
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[[GDTCORApplication sharedApplication] endBackgroundTask:bgID];
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bgID = GDTCORBackgroundIdentifierInvalid;
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});
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}
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#pragma mark - GDTCORLifecycleProtocol
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- (void)appWillTerminate:(GDTCORApplication *)application {
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// Flush the queue immediately.
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dispatch_sync(_eventWritingQueue, ^{
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});
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}
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@end
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