engine: dump chunks on shutdown if log level is debug`

Signed-off-by: Wesley Pettit <wppttt@amazon.com>

src/flb_engine.c

@@ -26,6 +26,7 @@
 #include <fluent-bit/flb_time.h>
 #include <fluent-bit/flb_info.h>
 #include <fluent-bit/flb_bits.h>
+#include <fluent-bit/flb_dump.h>
 
 #include <fluent-bit/flb_macros.h>
 #include <fluent-bit/flb_pipe.h>
@@ -819,6 +820,11 @@ int flb_engine_start(struct flb_config *config)
                     /* Increase the grace counter */
                     config->grace_count++;
 
+                    /* Dump buffer status on shutdown if in debug */
+                    if (config->verbose == FLB_LOG_DEBUG) {
+                        flb_dump(config);
+                    }
+
                     /*
                      * Grace period has finished, but we need to check if there is
                      * any pending running task. A running task is associated to an
@@ -979,7 +985,7 @@ void flb_engine_stop_ingestion(struct flb_config *config)
     config->is_ingestion_active = FLB_FALSE;
     config->is_shutting_down = FLB_TRUE;
 
-    flb_info("flb_engine_stop_ingestion()");
+    flb_info("[engine] pausing all inputs..");
 
     flb_input_pause_all(config);
 }