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// Copyright 2020 Google LLC
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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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#import "FirebasePerformance/Sources/Instrumentation/FPRInstrumentation.h"
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#import "FirebasePerformance/Sources/Common/FPRDiagnostics.h"
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#import "FirebasePerformance/Sources/Instrumentation/FPRInstrument.h"
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#import "FirebasePerformance/Sources/Instrumentation/Network/FPRNSURLConnectionInstrument.h"
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#import "FirebasePerformance/Sources/Instrumentation/Network/FPRNSURLSessionInstrument.h"
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#import "FirebasePerformance/Sources/Instrumentation/UIKit/FPRUIViewControllerInstrument.h"
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#import "FirebasePerformance/Sources/Configurations/FPRConfigurations.h"
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// The instrumentation group keys.
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NSString *const kFPRInstrumentationGroupNetworkKey = @"network";
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NSString *const kFPRInstrumentationGroupUIKitKey = @"uikit";
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/** Use ivars instead of properties to reduce message sending overhead. */
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@interface FPRInstrumentation () {
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// A dictionary of the instrument groups.
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NSDictionary<NSString *, NSMutableArray *> *_instrumentGroups;
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}
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/** Registers an instrument in the given group.
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*
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* @param instrument The instrument to register.
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* @param group The group to register the instrument in.
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*/
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- (void)registerInstrument:(FPRInstrument *)instrument group:(NSString *)group;
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@end
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@implementation FPRInstrumentation
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- (instancetype)init {
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self = [super init];
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if (self) {
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_instrumentGroups = @{
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kFPRInstrumentationGroupNetworkKey : [[NSMutableArray alloc] init],
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kFPRInstrumentationGroupUIKitKey : [[NSMutableArray alloc] init]
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};
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}
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return self;
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}
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- (void)registerInstrument:(FPRInstrument *)instrument group:(NSString *)group {
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FPRAssert(instrument, @"Instrument must be non-nil.");
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FPRAssert(_instrumentGroups[group], @"groups and group must be non-nil, and groups[group] must be"
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"non-nil.");
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if (instrument != nil) {
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[_instrumentGroups[group] addObject:instrument];
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}
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[instrument registerInstrumentors];
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}
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- (NSUInteger)registerInstrumentGroup:(NSString *)group {
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FPRAssert(_instrumentGroups[group], @"The group key does not exist", group);
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FPRAssert(_instrumentGroups[group].count == 0, @"This group is already instrumented");
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if ([group isEqualToString:kFPRInstrumentationGroupNetworkKey]) {
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[self registerInstrument:[[FPRNSURLSessionInstrument alloc] init] group:group];
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[self registerInstrument:[[FPRNSURLConnectionInstrument alloc] init] group:group];
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}
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if ([group isEqualToString:kFPRInstrumentationGroupUIKitKey]) {
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[self registerInstrument:[[FPRUIViewControllerInstrument alloc] init] group:group];
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}
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return _instrumentGroups[group].count;
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}
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- (BOOL)deregisterInstrumentGroup:(NSString *)group {
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FPRAssert(_instrumentGroups[group], @"You're attempting to deregister an invalid group key.");
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for (FPRInstrument *instrument in _instrumentGroups[group]) {
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[instrument deregisterInstrumentors];
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}
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[_instrumentGroups[group] removeAllObjects];
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return _instrumentGroups[group].count == 0;
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}
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@end
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