add logrotate out plugin (#2)

* add logrotate out plugin

* fix gzip

* fix test

* update max_size

* update gzip

* add logs

Author: SagiROosto

cmake/plugins_options.cmake

@@ -117,6 +117,7 @@ DEFINE_OPTION(FLB_OUT_DATADOG                 "Enable DataDog output plugin"
 DEFINE_OPTION(FLB_OUT_ES                      "Enable Elasticsearch output plugin"           ON)
 DEFINE_OPTION(FLB_OUT_EXIT                    "Enable Exit output plugin"                    ON)
 DEFINE_OPTION(FLB_OUT_FILE                    "Enable file output plugin"                    ON)
+DEFINE_OPTION(FLB_OUT_LOGROTATE               "Enable logrotate output plugin"               ON)
 DEFINE_OPTION(FLB_OUT_FLOWCOUNTER             "Enable flowcount output plugin"               ON)
 DEFINE_OPTION(FLB_OUT_FORWARD                 "Enable Forward output plugin"                 ON)
 DEFINE_OPTION(FLB_OUT_GELF                    "Enable GELF output plugin"                    ON)

conf/fluent-bit-logrotate.conf

@@ -0,0 +1,21 @@
+[SERVICE]
+    Flush        1
+    Log_Level    info
+    Parsers_File parsers.conf
+
+[INPUT]
+    Name        dummy
+    Tag         test.logrotate
+    Dummy       {"message": "test log message", "level": "info"}
+    Rate        10
+
+[OUTPUT]
+    Name        logrotate
+    Match       test.logrotate
+    Path        /tmp/logs
+    File        test.log
+    Format      json
+    Max_Size    10
+    Max_Files   5
+    Gzip        On
+    Mkdir       On

plugins/CMakeLists.txt

@@ -363,6 +363,11 @@ REGISTER_OUT_PLUGIN("out_datadog")
 REGISTER_OUT_PLUGIN("out_es")
 REGISTER_OUT_PLUGIN("out_exit")
 REGISTER_OUT_PLUGIN("out_file")
+
+if(FLB_OUT_LOGROTATE)
+  REGISTER_OUT_PLUGIN("out_logrotate")
+endif()
+
 REGISTER_OUT_PLUGIN("out_forward")
 REGISTER_OUT_PLUGIN("out_http")
 REGISTER_OUT_PLUGIN("out_influxdb")

plugins/out_logrotate/CMakeLists.txt

@@ -0,0 +1,4 @@
+set(src
+  logrotate.c)
+
+FLB_PLUGIN(out_logrotate "${src}" "")