113 lines
3.5 KiB
Objective-C
113 lines
3.5 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 "GDTLibrary/Private/GDTTransformer.h"
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#import "GDTLibrary/Private/GDTTransformer_Private.h"
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#import <GoogleDataTransport/GDTAssert.h>
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#import <GoogleDataTransport/GDTConsoleLogger.h>
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#import <GoogleDataTransport/GDTEventTransformer.h>
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#import <GoogleDataTransport/GDTLifecycle.h>
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#import "GDTLibrary/Private/GDTStorage.h"
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@implementation GDTTransformer
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+ (instancetype)sharedInstance {
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static GDTTransformer *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 = dispatch_queue_create("com.google.GDTTransformer", DISPATCH_QUEUE_SERIAL);
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_storageInstance = [GDTStorage sharedInstance];
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}
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return self;
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}
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- (void)transformEvent:(GDTEvent *)event
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withTransformers:(NSArray<id<GDTEventTransformer>> *)transformers {
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GDTAssert(event, @"You can't write a nil event");
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__block GDTBackgroundIdentifier bgID = GDTBackgroundIdentifierInvalid;
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if (_runningInBackground) {
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bgID = [[GDTApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
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if (bgID != GDTBackgroundIdentifierInvalid) {
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[[GDTApplication sharedApplication] endBackgroundTask:bgID];
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bgID = GDTBackgroundIdentifierInvalid;
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}
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}];
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}
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dispatch_async(_eventWritingQueue, ^{
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GDTEvent *transformedEvent = event;
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for (id<GDTEventTransformer> transformer in transformers) {
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if ([transformer respondsToSelector:@selector(transform:)]) {
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transformedEvent = [transformer transform:transformedEvent];
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if (!transformedEvent) {
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return;
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}
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} else {
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GDTLogError(GDTMCETransformerDoesntImplementTransform,
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@"Transformer doesn't implement transform: %@", transformer);
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return;
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}
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}
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[self.storageInstance storeEvent:transformedEvent];
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if (self->_runningInBackground) {
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[[GDTApplication sharedApplication] endBackgroundTask:bgID];
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bgID = GDTBackgroundIdentifierInvalid;
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}
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});
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}
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#pragma mark - GDTLifecycleProtocol
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- (void)appWillForeground:(GDTApplication *)app {
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dispatch_async(_eventWritingQueue, ^{
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self->_runningInBackground = NO;
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});
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}
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- (void)appWillBackground:(GDTApplication *)app {
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// Create an immediate background task to run until the end of the current queue of work.
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__block GDTBackgroundIdentifier bgID = [app beginBackgroundTaskWithExpirationHandler:^{
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if (bgID != GDTBackgroundIdentifierInvalid) {
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[app endBackgroundTask:bgID];
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bgID = GDTBackgroundIdentifierInvalid;
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}
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}];
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dispatch_async(_eventWritingQueue, ^{
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if (bgID != GDTBackgroundIdentifierInvalid) {
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[app endBackgroundTask:bgID];
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bgID = GDTBackgroundIdentifierInvalid;
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}
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});
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}
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- (void)appWillTerminate:(GDTApplication *)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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