Merging upstream version 1.44.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

2 files changed, 182 insertions, 0 deletions

diff --git a/fluent-bit/plugins/out_null/CMakeLists.txt b/fluent-bit/plugins/out_null/CMakeLists.txt
new file mode 100644
index 000000000..77a80fe90
--- /dev/null
+++ b/fluent-bit/plugins/out_null/CMakeLists.txt
@@ -0,0 +1,4 @@
+set(src
+  null.c)
+
+FLB_PLUGIN(out_null "${src}" "")
diff --git a/fluent-bit/plugins/out_null/null.c b/fluent-bit/plugins/out_null/null.c
new file mode 100644
index 000000000..a1e1689a0
--- /dev/null
+++ b/fluent-bit/plugins/out_null/null.c
@@ -0,0 +1,178 @@
+/* -*- 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_pack.h>
+#include <fluent-bit/flb_utils.h>
+
+struct flb_null {
+    struct flb_output_instance *ins;
+
+    /* config map properties */
+    int out_format;
+    int json_date_format;
+    flb_sds_t json_date_key;
+    flb_sds_t date_key;
+};
+
+int cb_null_init(struct flb_output_instance *ins, struct flb_config *config,
+                 void *data)
+{
+    int ret;
+    (void) config;
+    (void) data;
+    const char *tmp;
+    struct flb_null *ctx;
+
+    ctx = flb_malloc(sizeof(struct flb_null));
+    if (!ctx) {
+        flb_errno();
+        return -1;
+    }
+    ctx->ins = ins;
+
+    ret = flb_output_config_map_set(ins, (void *) ctx);
+    if (ret == -1) {
+        flb_free(ctx);
+        return -1;
+    }
+
+    ctx->out_format = FLB_PACK_JSON_FORMAT_NONE;
+    tmp = flb_output_get_property("format", ins);
+    if (tmp) {
+        ret = flb_pack_to_json_format_type(tmp);
+        if (ret == -1) {
+            flb_plg_error(ctx->ins, "unrecognized 'format' option. "
+                          "Using 'msgpack'");
+        }
+        else {
+            ctx->out_format = ret;
+        }
+    }
+
+    /* Date key */
+    ctx->date_key = ctx->json_date_key;
+    tmp = flb_output_get_property("json_date_key", ins);
+    if (tmp) {
+        /* Just check if we have to disable it */
+        if (flb_utils_bool(tmp) == FLB_FALSE) {
+            ctx->date_key = NULL;
+        }
+    }
+
+    /* Date format for JSON output */
+    ctx->json_date_format = FLB_PACK_JSON_DATE_DOUBLE;
+    tmp = flb_output_get_property("json_date_format", ins);
+    if (tmp) {
+        ret = flb_pack_to_json_date_type(tmp);
+        if (ret == -1) {
+            flb_plg_error(ctx->ins, "invalid json_date_format '%s'. "
+                          "Using 'double' type", tmp);
+        }
+        else {
+            ctx->json_date_format = ret;
+        }
+    }
+
+    flb_output_set_context(ins, ctx);
+
+    return 0;
+}
+
+static void cb_null_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) out_context;
+    (void) config;
+    flb_sds_t json;
+    struct flb_null *ctx = out_context;
+
+#ifdef FLB_HAVE_METRICS
+    /* Check if the event type is metrics, just return */
+    if (event_chunk->type == FLB_EVENT_TYPE_METRICS) {
+        FLB_OUTPUT_RETURN(FLB_OK);
+    }
+#endif
+
+    /*
+     * There are cases where the user might want to test the performance
+     * of msgpack payload conversion to JSON. Nothing will be printed,
+     * just encodeed and destroyed.
+     */
+    if (ctx->out_format != FLB_PACK_JSON_FORMAT_NONE) {
+        json = flb_pack_msgpack_to_json_format(event_chunk->data,
+                                               event_chunk->size,
+                                               ctx->out_format,
+                                               ctx->json_date_format,
+                                               ctx->date_key);
+        flb_sds_destroy(json);
+    }
+
+    flb_plg_debug(ctx->ins, "discarding %lu bytes", event_chunk->size);
+    FLB_OUTPUT_RETURN(FLB_OK);
+}
+
+/* Configuration properties map */
+static struct flb_config_map config_map[] = {
+    {
+     FLB_CONFIG_MAP_STR, "format", NULL,
+     0, FLB_FALSE, 0,
+     "Specifies the data format to be printed. Supported formats are msgpack json, json_lines and json_stream."
+    },
+    {
+     FLB_CONFIG_MAP_STR, "json_date_format", NULL,
+     0, FLB_FALSE, 0,
+    "Specifies the name of the date field in output."
+    },
+    {
+     FLB_CONFIG_MAP_STR, "json_date_key", "date",
+     0, FLB_TRUE, offsetof(struct flb_null, json_date_key),
+    FBL_PACK_JSON_DATE_FORMAT_DESCRIPTION
+    },
+
+    /* EOF */
+    {0}
+};
+
+static int cb_null_exit(void *data, struct flb_config *config)
+{
+    struct flb_null *ctx = data;
+
+    if (!ctx) {
+        return 0;
+    }
+
+    flb_free(ctx);
+    return 0;
+}
+
+struct flb_output_plugin out_null_plugin = {
+    .name         = "null",
+    .description  = "Throws away events",
+    .cb_init      = cb_null_init,
+    .cb_flush     = cb_null_flush,
+    .cb_exit      = cb_null_exit,
+    .event_type   = FLB_OUTPUT_LOGS | FLB_OUTPUT_METRICS,
+    .config_map   = config_map,
+    .flags        = 0,
+    .workers      = 1,
+};