Class AbstractAccessLogValve.DateFormatCache
- java.lang.Object
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- org.apache.catalina.valves.AbstractAccessLogValve.DateFormatCache
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- Enclosing class:
- AbstractAccessLogValve
protected static class AbstractAccessLogValve.DateFormatCache extends java.lang.Object
Cache structure for formatted timestamps based on seconds.
The cache consists of entries for a consecutive range of seconds. The length of the range is configurable. It is implemented based on a cyclic buffer. New entries shift the range.
There is one cache for the CLF format (the access log standard format) and a HashMap of caches for additional formats used by SimpleDateFormat.
Although the cache supports specifying a locale when retrieving a formatted timestamp, each format will always use the locale given when the format was first used. New locales can only be used for new formats. The CLF format will always be formatted using the locale
en_US
.The cache is not threadsafe. It can be used without synchronization via thread local instances, or with synchronization as a global cache.
The cache can be created with a parent cache to build a cache hierarchy. Access to the parent cache is threadsafe.
This class uses a small thread local first level cache and a bigger synchronized global second level cache.
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Nested Class Summary
Nested Classes Modifier and Type Class Description protected class
AbstractAccessLogValve.DateFormatCache.Cache
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Field Summary
Fields Modifier and Type Field Description protected AbstractAccessLogValve.DateFormatCache.Cache
cLFCache
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Constructor Summary
Constructors Modifier Constructor Description protected
DateFormatCache(int size, java.util.Locale loc, AbstractAccessLogValve.DateFormatCache parent)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
getFormat(long time)
java.lang.String
getFormat(java.lang.String format, java.util.Locale loc, long time)
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Field Detail
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cLFCache
protected final AbstractAccessLogValve.DateFormatCache.Cache cLFCache
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Constructor Detail
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DateFormatCache
protected DateFormatCache(int size, java.util.Locale loc, AbstractAccessLogValve.DateFormatCache parent)
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