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/*
* Copyright 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#import "RTCFileLogger.h"
#include <memory>
#include "rtc_base/checks.h"
#include "rtc_base/file_rotating_stream.h"
#include "rtc_base/log_sinks.h"
#include "rtc_base/logging.h"
NSString *const kDefaultLogDirName = @"webrtc_logs";
NSUInteger const kDefaultMaxFileSize = 10 * 1024 * 1024; // 10MB.
const char *kRTCFileLoggerRotatingLogPrefix = "rotating_log";
@implementation RTC_OBJC_TYPE (RTCFileLogger) {
BOOL _hasStarted;
NSString *_dirPath;
NSUInteger _maxFileSize;
std::unique_ptr<rtc::FileRotatingLogSink> _logSink;
}
@synthesize severity = _severity;
@synthesize rotationType = _rotationType;
@synthesize shouldDisableBuffering = _shouldDisableBuffering;
- (instancetype)init {
NSArray *paths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirPath = [paths firstObject];
NSString *defaultDirPath =
[documentsDirPath stringByAppendingPathComponent:kDefaultLogDirName];
return [self initWithDirPath:defaultDirPath
maxFileSize:kDefaultMaxFileSize];
}
- (instancetype)initWithDirPath:(NSString *)dirPath
maxFileSize:(NSUInteger)maxFileSize {
return [self initWithDirPath:dirPath
maxFileSize:maxFileSize
rotationType:RTCFileLoggerTypeCall];
}
- (instancetype)initWithDirPath:(NSString *)dirPath
maxFileSize:(NSUInteger)maxFileSize
rotationType:(RTCFileLoggerRotationType)rotationType {
NSParameterAssert(dirPath.length);
NSParameterAssert(maxFileSize);
if (self = [super init]) {
BOOL isDir = NO;
NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:dirPath isDirectory:&isDir]) {
if (!isDir) {
// Bail if something already exists there.
return nil;
}
} else {
if (![fileManager createDirectoryAtPath:dirPath
withIntermediateDirectories:NO
attributes:nil
error:nil]) {
// Bail if we failed to create a directory.
return nil;
}
}
_dirPath = dirPath;
_maxFileSize = maxFileSize;
_severity = RTCFileLoggerSeverityInfo;
}
return self;
}
- (void)dealloc {
[self stop];
}
- (void)start {
if (_hasStarted) {
return;
}
switch (_rotationType) {
case RTCFileLoggerTypeApp:
_logSink.reset(
new rtc::FileRotatingLogSink(_dirPath.UTF8String,
kRTCFileLoggerRotatingLogPrefix,
_maxFileSize,
_maxFileSize / 10));
break;
case RTCFileLoggerTypeCall:
_logSink.reset(
new rtc::CallSessionFileRotatingLogSink(_dirPath.UTF8String,
_maxFileSize));
break;
}
if (!_logSink->Init()) {
RTC_LOG(LS_ERROR) << "Failed to open log files at path: " << _dirPath.UTF8String;
_logSink.reset();
return;
}
if (_shouldDisableBuffering) {
_logSink->DisableBuffering();
}
rtc::LogMessage::LogThreads(true);
rtc::LogMessage::LogTimestamps(true);
rtc::LogMessage::AddLogToStream(_logSink.get(), [self rtcSeverity]);
_hasStarted = YES;
}
- (void)stop {
if (!_hasStarted) {
return;
}
RTC_DCHECK(_logSink);
rtc::LogMessage::RemoveLogToStream(_logSink.get());
_hasStarted = NO;
_logSink.reset();
}
- (nullable NSData *)logData {
if (_hasStarted) {
return nil;
}
NSMutableData* logData = [NSMutableData data];
std::unique_ptr<rtc::FileRotatingStreamReader> stream;
switch(_rotationType) {
case RTCFileLoggerTypeApp:
stream = std::make_unique<rtc::FileRotatingStreamReader>(_dirPath.UTF8String,
kRTCFileLoggerRotatingLogPrefix);
break;
case RTCFileLoggerTypeCall:
stream = std::make_unique<rtc::CallSessionFileRotatingStreamReader>(_dirPath.UTF8String);
break;
}
size_t bufferSize = stream->GetSize();
if (bufferSize == 0) {
return logData;
}
// Allocate memory using malloc so we can pass it direcly to NSData without
// copying.
std::unique_ptr<uint8_t[]> buffer(static_cast<uint8_t*>(malloc(bufferSize)));
size_t read = stream->ReadAll(buffer.get(), bufferSize);
logData = [[NSMutableData alloc] initWithBytesNoCopy:buffer.release()
length:read];
return logData;
}
#pragma mark - Private
- (rtc::LoggingSeverity)rtcSeverity {
switch (_severity) {
case RTCFileLoggerSeverityVerbose:
return rtc::LS_VERBOSE;
case RTCFileLoggerSeverityInfo:
return rtc::LS_INFO;
case RTCFileLoggerSeverityWarning:
return rtc::LS_WARNING;
case RTCFileLoggerSeverityError:
return rtc::LS_ERROR;
}
}
@end
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