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[#195] Logstash appender: add `:flush?` option (@tvanhens) 

Setting the value to true will eagerly flush the tcp writer. Default
behavior is for this to be false.
This commit is contained in:
Tyler van Hensbergen 2016-09-15 12:40:42 -06:00 committed by Peter Taoussanis
parent ef8592f27d
commit e9c5dc0479
1 changed files with 10 additions and 7 deletions
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17
src/taoensso/timbre/appenders/3rd_party/logstash.clj vendored
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@ -50,10 +50,12 @@
format to the logstash server at `host:port`. Additionally `opts`
may be a map with `:pr-stracktrace` mapped to a function taking an
exception, which should write the stacktrace of that exception to
`*out`."
`*out`. Set `:flush?` to true to flush the writer after every
event."
[host port & [opts]]
(let [conn (atom nil)
nl "\n"]
(let [conn (atom nil)
flush? (or (:flush? opts) false)
nl "\n"]
{:enabled? true
:async? false
:min-level nil
@ -63,12 +65,13 @@
(fn [data]
(try
(let [[sock out] (swap! conn
(fn [conn]
(or (and conn (connection-ok? conn) conn)
(connect host port))))]
(fn [conn]
(or (and conn (connection-ok? conn) conn)
(connect host port))))]
(locking sock
(data->json-stream data out (select-keys opts [:pr-stacktrace]))
;; logstash tcp input plugin: "each event is assumed to be one line of text".
(.write ^java.io.Writer out nl)))
(.write ^java.io.Writer out nl)
(when flush? (.flush ^java.io.Writer out))))
(catch java.io.IOException _
nil)))}))