mirror of
https://github.com/samsonjs/arq_restore.git
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135 lines
5 KiB
Objective-C
135 lines
5 KiB
Objective-C
// Software License Agreement (BSD License)
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//
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// Copyright (c) 2010-2015, Deusty, LLC
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// All rights reserved.
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//
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// Redistribution and use of this software in source and binary forms,
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// with or without modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Neither the name of Deusty nor the names of its contributors may be used
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// to endorse or promote products derived from this software without specific
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// prior written permission of Deusty, LLC.
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#import <Foundation/Foundation.h>
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#import <libkern/OSAtomic.h>
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// Disable legacy macros
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#ifndef DD_LEGACY_MACROS
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#define DD_LEGACY_MACROS 0
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#endif
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#import "DDLog.h"
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/**
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* This class provides a log formatter that prints the dispatch_queue label instead of the mach_thread_id.
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*
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* A log formatter can be added to any logger to format and/or filter its output.
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* You can learn more about log formatters here:
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* Documentation/CustomFormatters.md
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*
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* A typical NSLog (or DDTTYLogger) prints detailed info as [<process_id>:<thread_id>].
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* For example:
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*
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* 2011-10-17 20:21:45.435 AppName[19928:5207] Your log message here
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*
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* Where:
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* - 19928 = process id
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* - 5207 = thread id (mach_thread_id printed in hex)
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*
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* When using grand central dispatch (GCD), this information is less useful.
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* This is because a single serial dispatch queue may be run on any thread from an internally managed thread pool.
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* For example:
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*
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* 2011-10-17 20:32:31.111 AppName[19954:4d07] Message from my_serial_dispatch_queue
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* 2011-10-17 20:32:31.112 AppName[19954:5207] Message from my_serial_dispatch_queue
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* 2011-10-17 20:32:31.113 AppName[19954:2c55] Message from my_serial_dispatch_queue
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*
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* This formatter allows you to replace the standard [box:info] with the dispatch_queue name.
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* For example:
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*
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* 2011-10-17 20:32:31.111 AppName[img-scaling] Message from my_serial_dispatch_queue
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* 2011-10-17 20:32:31.112 AppName[img-scaling] Message from my_serial_dispatch_queue
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* 2011-10-17 20:32:31.113 AppName[img-scaling] Message from my_serial_dispatch_queue
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*
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* If the dispatch_queue doesn't have a set name, then it falls back to the thread name.
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* If the current thread doesn't have a set name, then it falls back to the mach_thread_id in hex (like normal).
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*
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* Note: If manually creating your own background threads (via NSThread/alloc/init or NSThread/detachNeThread),
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* you can use [[NSThread currentThread] setName:(NSString *)].
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**/
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@interface DDDispatchQueueLogFormatter : NSObject <DDLogFormatter>
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/**
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* Standard init method.
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* Configure using properties as desired.
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**/
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- (instancetype)init NS_DESIGNATED_INITIALIZER;
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/**
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* The minQueueLength restricts the minimum size of the [detail box].
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* If the minQueueLength is set to 0, there is no restriction.
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*
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* For example, say a dispatch_queue has a label of "diskIO":
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*
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* If the minQueueLength is 0: [diskIO]
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* If the minQueueLength is 4: [diskIO]
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* If the minQueueLength is 5: [diskIO]
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* If the minQueueLength is 6: [diskIO]
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* If the minQueueLength is 7: [diskIO ]
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* If the minQueueLength is 8: [diskIO ]
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*
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* The default minQueueLength is 0 (no minimum, so [detail box] won't be padded).
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*
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* If you want every [detail box] to have the exact same width,
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* set both minQueueLength and maxQueueLength to the same value.
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**/
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@property (assign, atomic) NSUInteger minQueueLength;
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/**
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* The maxQueueLength restricts the number of characters that will be inside the [detail box].
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* If the maxQueueLength is 0, there is no restriction.
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*
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* For example, say a dispatch_queue has a label of "diskIO":
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*
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* If the maxQueueLength is 0: [diskIO]
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* If the maxQueueLength is 4: [disk]
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* If the maxQueueLength is 5: [diskI]
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* If the maxQueueLength is 6: [diskIO]
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* If the maxQueueLength is 7: [diskIO]
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* If the maxQueueLength is 8: [diskIO]
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*
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* The default maxQueueLength is 0 (no maximum, so [detail box] won't be truncated).
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*
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* If you want every [detail box] to have the exact same width,
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* set both minQueueLength and maxQueueLength to the same value.
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**/
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@property (assign, atomic) NSUInteger maxQueueLength;
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/**
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* Sometimes queue labels have long names like "com.apple.main-queue",
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* but you'd prefer something shorter like simply "main".
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*
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* This method allows you to set such preferred replacements.
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* The above example is set by default.
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*
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* To remove/undo a previous replacement, invoke this method with nil for the 'shortLabel' parameter.
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**/
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- (NSString *)replacementStringForQueueLabel:(NSString *)longLabel;
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- (void)setReplacementString:(NSString *)shortLabel forQueueLabel:(NSString *)longLabel;
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@end
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/**
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* Method declarations that make it easier to extend/modify DDDispatchQueueLogFormatter
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**/
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@interface DDDispatchQueueLogFormatter (OverridableMethods)
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- (NSString *)stringFromDate:(NSDate *)date;
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- (NSString *)queueThreadLabelForLogMessage:(DDLogMessage *)logMessage;
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- (NSString *)formatLogMessage:(DDLogMessage *)logMessage;
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@end
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