1 files changed, 106 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/out_counter/counter.c b/src/fluent-bit/plugins/out_counter/counter.c
new file mode 100644
index 000000000..812b96782
--- /dev/null
+++ b/src/fluent-bit/plugins/out_counter/counter.c
@@ -0,0 +1,106 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2015-2022 The Fluent Bit Authors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include <fluent-bit/flb_output_plugin.h>
+#include <fluent-bit/flb_time.h>
+#include <fluent-bit/flb_mp.h>
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+struct flb_counter_ctx {
+    uint64_t total;
+};
+
+static int cb_counter_init(struct flb_output_instance *ins,
+                           struct flb_config *config,
+                           void *data)
+{
+    (void) ins;
+    (void) config;
+    (void) data;
+    struct flb_counter_ctx *ctx;
+
+    ctx = flb_malloc(sizeof(struct flb_counter_ctx));
+    if (!ctx) {
+        flb_errno();
+        return -1;
+    }
+    ctx->total = 0;
+    flb_output_set_context(ins, ctx);
+    if (flb_output_config_map_set(ins, (void *)ctx) == -1) {
+        flb_plg_error(ins, "unable to load configuration");
+        flb_free(ctx);
+        return -1;
+    }
+
+    return 0;
+}
+
+static void cb_counter_flush(struct flb_event_chunk *event_chunk,
+                             struct flb_output_flush *out_flush,
+                             struct flb_input_instance *i_ins,
+                             void *out_context,
+                             struct flb_config *config)
+{
+    (void) i_ins;
+    (void) out_context;
+    (void) config;
+    size_t cnt;
+    struct flb_counter_ctx *ctx = out_context;
+    struct flb_time tm;
+
+    /* Count number of parent items */
+    cnt = flb_mp_count(event_chunk->data, event_chunk->size);
+    ctx->total += cnt;
+
+    flb_time_get(&tm);
+    printf("%f,%lu (total = %"PRIu64")\n", flb_time_to_double(&tm), cnt,
+           ctx->total);
+
+    FLB_OUTPUT_RETURN(FLB_OK);
+}
+
+static int cb_counter_exit(void *data, struct flb_config *config)
+{
+    struct flb_counter_ctx *ctx = data;
+
+    if (!ctx) {
+        return 0;
+    }
+
+    flb_free(ctx);
+    return 0;
+}
+
+static struct flb_config_map config_map[] = {
+   /* EOF */
+   {0}
+};
+
+struct flb_output_plugin out_counter_plugin = {
+    .name         = "counter",
+    .description  = "Records counter",
+    .cb_init      = cb_counter_init,
+    .cb_flush     = cb_counter_flush,
+    .cb_exit      = cb_counter_exit,
+    .config_map   = config_map,
+    .flags        = 0,
+};