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author | Péter Szilágyi <peterke@gmail.com> | 2018-11-13 00:47:34 +0800 |
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committer | Péter Szilágyi <peterke@gmail.com> | 2018-11-15 18:22:13 +0800 |
commit | 434dd5bc0067cdf604d84426df9086015721dd36 (patch) | |
tree | 279d85e32a36b8804d60c5a4b83b444514850782 /vendor/github.com/allegro/bigcache/logger.go | |
parent | 9a000601c6c4e4f8134caedba1957ffe28d2b659 (diff) | |
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cmd, core, eth, light, trie: add trie read caching layer
Diffstat (limited to 'vendor/github.com/allegro/bigcache/logger.go')
-rw-r--r-- | vendor/github.com/allegro/bigcache/logger.go | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/vendor/github.com/allegro/bigcache/logger.go b/vendor/github.com/allegro/bigcache/logger.go new file mode 100644 index 000000000..50e84abc8 --- /dev/null +++ b/vendor/github.com/allegro/bigcache/logger.go @@ -0,0 +1,30 @@ +package bigcache + +import ( + "log" + "os" +) + +// Logger is invoked when `Config.Verbose=true` +type Logger interface { + Printf(format string, v ...interface{}) +} + +// this is a safeguard, breaking on compile time in case +// `log.Logger` does not adhere to our `Logger` interface. +// see https://golang.org/doc/faq#guarantee_satisfies_interface +var _ Logger = &log.Logger{} + +// DefaultLogger returns a `Logger` implementation +// backed by stdlib's log +func DefaultLogger() *log.Logger { + return log.New(os.Stdout, "", log.LstdFlags) +} + +func newLogger(custom Logger) Logger { + if custom != nil { + return custom + } + + return DefaultLogger() +} |