out_parseable: Add Parseable output plugin

Add a new output plugin for Parseable, a cloud-native log analytics platform.

Features:
- Send logs, metrics, and traces to Parseable
- Gzip compression support
- Custom HTTP headers
- Dynamic stream routing from Kubernetes metadata
- Kubernetes metadata enrichment
- Built-in metrics (requests, errors, records, bytes)
- Configurable retry limits and batch sizes

Signed-off-by: Debabrata <[email protected]>
Signed-off-by: Debanitrkl <[email protected]>

Author: Debanitrkl

cmake/plugins_options.cmake

@@ -135,6 +135,7 @@ DEFINE_OPTION(FLB_OUT_NULL                    "Enable dev null output plugin"
 DEFINE_OPTION(FLB_OUT_OPENSEARCH              "Enable OpenSearch output plugin"              ON)
 DEFINE_OPTION(FLB_OUT_OPENTELEMETRY           "Enable OpenTelemetry plugin"                  ON)
 DEFINE_OPTION(FLB_OUT_ORACLE_LOG_ANALYTICS    "Enable Oracle Cloud Infrastructure Logging analytics plugin" ON)
+DEFINE_OPTION(FLB_OUT_PARSEABLE               "Enable Parseable output plugin"               ON)
 DEFINE_OPTION(FLB_OUT_PGSQL                   "Enable PostgreSQL output plugin"              OFF)
 DEFINE_OPTION(FLB_OUT_PLOT                    "Enable Plot output plugin"                    ON)
 DEFINE_OPTION(FLB_OUT_PROMETHEUS_EXPORTER     "Enable Prometheus exporter plugin"            ON)

plugins/CMakeLists.txt

@@ -379,6 +379,7 @@ REGISTER_OUT_PLUGIN("out_nrlogs")
 REGISTER_OUT_PLUGIN("out_null")
 REGISTER_OUT_PLUGIN("out_opensearch")
 REGISTER_OUT_PLUGIN("out_oracle_log_analytics")
+REGISTER_OUT_PLUGIN("out_parseable")
 
 if (NOT CMAKE_SYSTEM_NAME MATCHES "Windows")
   REGISTER_OUT_PLUGIN("out_plot")

plugins/out_parseable/CMakeLists.txt

@@ -0,0 +1,5 @@
+set(src
+  parseable.c
+  )
+
+FLB_PLUGIN(out_parseable "${src}" "")