Merging upstream version 1.44.3.

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

5 files changed, 571 insertions, 0 deletions

diff --git a/fluent-bit/plugins/out_udp/CMakeLists.txt b/fluent-bit/plugins/out_udp/CMakeLists.txt
new file mode 100644
index 000000000..ad4f7e411
--- /dev/null
+++ b/fluent-bit/plugins/out_udp/CMakeLists.txt
@@ -0,0 +1,6 @@
+set(src
+  udp.c
+  udp_conf.c
+  )
+
+FLB_PLUGIN(out_udp "${src}" "mk_core")
diff --git a/fluent-bit/plugins/out_udp/udp.c b/fluent-bit/plugins/out_udp/udp.c
new file mode 100644
index 000000000..8e0044bfe
--- /dev/null
+++ b/fluent-bit/plugins/out_udp/udp.c
@@ -0,0 +1,351 @@
+/* -*- 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_str.h>
+#include <fluent-bit/flb_time.h>
+#include <fluent-bit/flb_utils.h>
+#include <fluent-bit/flb_pack.h>
+#include <fluent-bit/flb_sds.h>
+#include <fluent-bit/flb_config_map.h>
+#include <fluent-bit/flb_log_event_decoder.h>
+#include <msgpack.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "udp.h"
+#include "udp_conf.h"
+
+static int cb_udp_init(struct flb_output_instance *ins,
+                       struct flb_config *config, void *data)
+{
+    struct flb_out_udp *ctx = NULL;
+    (void) data;
+
+    ctx = flb_udp_conf_create(ins, config);
+    if (!ctx) {
+        return -1;
+    }
+
+    /* Set the plugin context */
+    flb_output_set_context(ins, ctx);
+
+    return 0;
+}
+
+static int deliver_chunks_raw(struct flb_out_udp *ctx,
+                              const char *tag, int tag_len,
+                              const void *in_data, size_t in_size)
+{
+    int ret;
+    flb_sds_t buf = NULL;
+    flb_sds_t str;
+    msgpack_object map;
+    ssize_t send_result;
+    struct flb_log_event_decoder log_decoder;
+    struct flb_log_event log_event;
+
+    buf = flb_sds_create_size(in_size);
+    if (!buf) {
+        return FLB_ERROR;
+    }
+
+    ret = flb_log_event_decoder_init(&log_decoder, (char *) in_data, in_size);
+
+    if (ret != FLB_EVENT_DECODER_SUCCESS) {
+        flb_plg_error(ctx->ins,
+                      "Log event decoder initialization error : %d", ret);
+
+        flb_sds_destroy(buf);
+
+        return -1;
+    }
+
+    while ((ret = flb_log_event_decoder_next(
+                    &log_decoder,
+                    &log_event)) == FLB_EVENT_DECODER_SUCCESS) {
+        map = *log_event.body;
+
+        str = flb_ra_translate(ctx->ra_raw_message_key, (char *) tag, tag_len, map, NULL);
+        if (!str) {
+            continue;
+        }
+
+        ret = flb_sds_cat_safe(&buf, str, flb_sds_len(str));
+        if (ret != 0) {
+            flb_plg_error(ctx->ins, "failed to compose payload from '%s'", str);
+        }
+        flb_sds_destroy(str);
+
+        /* append a new line */
+        flb_sds_cat_safe(&buf, "\n", 1);
+
+        if (flb_sds_len(buf) > 65535) {
+            flb_plg_debug(ctx->ins, "record size exceeds maximum datagram size : %zu", flb_sds_len(buf));
+        }
+
+        send_result = send(ctx->endpoint_descriptor,
+                           buf,
+                           flb_sds_len(buf),
+                           0);
+
+        if (send_result == -1) {
+            flb_log_event_decoder_destroy(&log_decoder);
+            flb_sds_destroy(buf);
+
+            return FLB_RETRY;
+        }
+
+        flb_sds_len_set(buf, 0);
+        buf[0] = '\0';
+    }
+
+    flb_log_event_decoder_destroy(&log_decoder);
+    flb_sds_destroy(buf);
+
+    return FLB_OK;
+}
+
+static int deliver_chunks_json(struct flb_out_udp *ctx,
+                               const char *tag, int tag_len,
+                               const void *in_data, size_t in_size)
+{
+    int ret;
+    size_t off = 0;
+    flb_sds_t json = NULL;
+    ssize_t send_result;
+    size_t previous_offset;
+    int append_new_line;
+    struct flb_log_event_decoder log_decoder;
+    struct flb_log_event log_event;
+
+    ret = flb_log_event_decoder_init(&log_decoder, (char *) in_data, in_size);
+
+    if (ret != FLB_EVENT_DECODER_SUCCESS) {
+        flb_plg_error(ctx->ins,
+                      "Log event decoder initialization error : %d", ret);
+
+        return FLB_ERROR;
+    }
+
+    previous_offset = 0;
+
+    while ((ret = flb_log_event_decoder_next(
+                    &log_decoder,
+                    &log_event)) == FLB_EVENT_DECODER_SUCCESS) {
+        off = log_decoder.offset;
+
+        json = flb_pack_msgpack_to_json_format(&((char *) in_data)[previous_offset],
+                                               off - previous_offset,
+                                               ctx->out_format,
+                                               ctx->json_date_format,
+                                               ctx->date_key);
+        if (!json) {
+            flb_plg_error(ctx->ins, "error formatting JSON payload");
+
+            flb_log_event_decoder_destroy(&log_decoder);
+
+            return FLB_ERROR;
+        }
+
+        previous_offset = off;
+        append_new_line = FLB_FALSE;
+
+        if (flb_sds_len(json) > 0) {
+            if (json[flb_sds_len(json) - 1] != '\n') {
+                append_new_line = FLB_TRUE;
+            }
+
+            if (append_new_line) {
+                ret = flb_sds_cat_safe(&json, "\n", 1);
+
+                if (ret != 0) {
+                    flb_log_event_decoder_destroy(&log_decoder);
+                    flb_sds_destroy(json);
+
+                    return FLB_RETRY;
+                }
+            }
+
+            if (flb_sds_len(json) > 65535) {
+                flb_plg_debug(ctx->ins, "record size exceeds maximum datagram size : %zu", flb_sds_len(json));
+            }
+
+            send_result = send(ctx->endpoint_descriptor,
+                               json,
+                               flb_sds_len(json),
+                               0);
+
+            if (send_result == -1) {
+                flb_log_event_decoder_destroy(&log_decoder);
+                flb_sds_destroy(json);
+
+                return FLB_RETRY;
+            }
+        }
+
+        flb_sds_destroy(json);
+    }
+
+    flb_log_event_decoder_destroy(&log_decoder);
+
+    return FLB_OK;
+}
+
+static int deliver_chunks_msgpack(struct flb_out_udp *ctx,
+                                  const char *tag, int tag_len,
+                                  const void *in_data, size_t in_size)
+{
+    size_t off = 0;
+    ssize_t send_result;
+    size_t previous_offset;
+    struct flb_log_event_decoder log_decoder;
+    struct flb_log_event log_event;
+    int ret;
+
+    ret = flb_log_event_decoder_init(&log_decoder, (char *) in_data, in_size);
+
+    if (ret != FLB_EVENT_DECODER_SUCCESS) {
+        flb_plg_error(ctx->ins,
+                      "Log event decoder initialization error : %d", ret);
+
+        return FLB_RETRY;
+    }
+
+    previous_offset = 0;
+
+    while ((ret = flb_log_event_decoder_next(
+                    &log_decoder,
+                    &log_event)) == FLB_EVENT_DECODER_SUCCESS) {
+        off = log_decoder.offset;
+
+        if ((off - previous_offset) > 65535) {
+            flb_plg_debug(ctx->ins, "record size exceeds maximum datagram size : %zu", (off - previous_offset));
+        }
+
+        send_result = send(ctx->endpoint_descriptor,
+                           &((char *) in_data)[previous_offset],
+                           off - previous_offset,
+                           0);
+
+        if (send_result == -1) {
+            flb_log_event_decoder_destroy(&log_decoder);
+
+            return FLB_RETRY;
+        }
+
+        previous_offset = off;
+    }
+
+    flb_log_event_decoder_destroy(&log_decoder);
+
+    return FLB_OK;
+}
+
+static void cb_udp_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)
+{
+    int ret = FLB_ERROR;
+    struct flb_out_udp *ctx = out_context;
+
+    (void) i_ins;
+
+    if (ctx->ra_raw_message_key != NULL) {
+        ret = deliver_chunks_raw(ctx,
+                                 event_chunk->tag,
+                                 flb_sds_len(event_chunk->tag),
+                                 event_chunk->data,
+                                 event_chunk->size);
+    }
+    else if (ctx->out_format == FLB_PACK_JSON_FORMAT_NONE) {
+        ret = deliver_chunks_msgpack(ctx,
+                                     event_chunk->tag,
+                                     flb_sds_len(event_chunk->tag),
+                                     event_chunk->data,
+                                     event_chunk->size);
+    }
+    else {
+        ret = deliver_chunks_json(ctx,
+                                  event_chunk->tag,
+                                  flb_sds_len(event_chunk->tag),
+                                  event_chunk->data,
+                                  event_chunk->size);
+    }
+
+    return FLB_OUTPUT_RETURN(ret);
+}
+
+static int cb_udp_exit(void *data, struct flb_config *config)
+{
+    struct flb_out_udp *ctx = data;
+
+    flb_udp_conf_destroy(ctx);
+
+    return 0;
+}
+
+/* Configuration properties map */
+static struct flb_config_map config_map[] = {
+    {
+     FLB_CONFIG_MAP_STR, "format", "json_lines",
+     0, FLB_FALSE, 0,
+     "Specify the payload format, supported formats: msgpack, json, "
+     "json_lines or json_stream."
+    },
+
+    {
+     FLB_CONFIG_MAP_STR, "json_date_format", "double",
+     0, FLB_FALSE, 0,
+     FBL_PACK_JSON_DATE_FORMAT_DESCRIPTION
+    },
+
+    {
+     FLB_CONFIG_MAP_STR, "json_date_key", "date",
+     0, FLB_TRUE, offsetof(struct flb_out_udp, json_date_key),
+     "Specify the name of the date field in output."
+    },
+
+    {
+     FLB_CONFIG_MAP_STR, "raw_message_key", NULL,
+     0, FLB_TRUE, offsetof(struct flb_out_udp, raw_message_key),
+     "use a raw message key for the message."
+    },
+
+    /* EOF */
+    {0}
+};
+
+/* Plugin reference */
+struct flb_output_plugin out_udp_plugin = {
+    .name           = "udp",
+    .description    = "UDP Output",
+    .cb_init        = cb_udp_init,
+    .cb_flush       = cb_udp_flush,
+    .cb_exit        = cb_udp_exit,
+    .config_map     = config_map,
+
+    .workers        = 2,
+    .flags          = FLB_OUTPUT_NET,
+};
diff --git a/fluent-bit/plugins/out_udp/udp.h b/fluent-bit/plugins/out_udp/udp.h
new file mode 100644
index 000000000..522367ee0
--- /dev/null
+++ b/fluent-bit/plugins/out_udp/udp.h
@@ -0,0 +1,47 @@
+/* -*- 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.
+ */
+
+#ifndef FLB_OUT_UDP_H
+#define FLB_OUT_UDP_H
+
+#include <fluent-bit/flb_info.h>
+#include <fluent-bit/flb_stream.h>
+#include <fluent-bit/flb_connection.h>
+#include <fluent-bit/flb_record_accessor.h>
+
+struct flb_out_udp {
+    /* Output format */
+    int out_format;
+    flb_sds_t raw_message_key;
+    struct flb_record_accessor *ra_raw_message_key;
+
+    char *host;
+    int port;
+
+    flb_sockfd_t endpoint_descriptor;
+
+    /* Timestamp format */
+    int       json_date_format;
+    flb_sds_t json_date_key;
+    flb_sds_t date_key;
+
+    struct flb_output_instance *ins;
+};
+
+#endif
diff --git a/fluent-bit/plugins/out_udp/udp_conf.c b/fluent-bit/plugins/out_udp/udp_conf.c
new file mode 100644
index 000000000..2f5509d3a
--- /dev/null
+++ b/fluent-bit/plugins/out_udp/udp_conf.c
@@ -0,0 +1,135 @@
+/* -*- 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_utils.h>
+#include <fluent-bit/flb_sds.h>
+#include <fluent-bit/flb_pack.h>
+
+#include "udp.h"
+#include "udp_conf.h"
+
+struct flb_out_udp *flb_udp_conf_create(struct flb_output_instance *ins,
+                                        struct flb_config *config)
+{
+    int ret;
+    const char *tmp;
+    struct flb_out_udp *ctx = NULL;
+
+    /* Allocate plugin context */
+    ctx = flb_calloc(1, sizeof(struct flb_out_udp));
+    if (!ctx) {
+        flb_errno();
+        return NULL;
+    }
+    ctx->ins = ins;
+
+    ret = flb_output_config_map_set(ins, (void *) ctx);
+    if (ret == -1) {
+        flb_free(ctx);
+        return NULL;
+    }
+
+    /* Set default network configuration if not set */
+    flb_output_net_default("127.0.0.1", 5170, ins);
+
+    /* raw message key mode */
+    if (ctx->raw_message_key) {
+        ctx->ra_raw_message_key = flb_ra_create(ctx->raw_message_key, FLB_TRUE);
+        if (!ctx->ra_raw_message_key) {
+            flb_plg_error(ctx->ins, "could not create record accessor for raw_message_key");
+            flb_free(ctx);
+            return NULL;
+        }
+    }
+
+    /* Output format */
+    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 '%s'. "
+                          "Using 'msgpack'", tmp);
+        }
+        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, "unrecognized 'json_date_format' option '%s'. "
+                          "Using 'double'", tmp);
+        }
+        else {
+            ctx->json_date_format = ret;
+        }
+    }
+
+    ctx->host = ins->host.name;
+    ctx->port = ins->host.port;
+
+    ctx->endpoint_descriptor = flb_net_udp_connect(ins->host.name,
+                                                   ins->host.port,
+                                                   ins->net_setup.source_address);
+
+    if (ctx->endpoint_descriptor < 0) {
+        flb_udp_conf_destroy(ctx);
+
+        flb_plg_error(ctx->ins, "Error creating upstream socket");
+
+        ctx = NULL;
+    }
+
+    return ctx;
+}
+
+void flb_udp_conf_destroy(struct flb_out_udp *ctx)
+{
+    if (!ctx) {
+        return;
+    }
+
+    if (ctx->ra_raw_message_key) {
+        flb_ra_destroy(ctx->ra_raw_message_key);
+    }
+
+    if (ctx->endpoint_descriptor >= 0) {
+        flb_socket_close(ctx->endpoint_descriptor);
+    }
+
+    flb_free(ctx);
+
+    ctx = NULL;
+}
diff --git a/fluent-bit/plugins/out_udp/udp_conf.h b/fluent-bit/plugins/out_udp/udp_conf.h
new file mode 100644
index 000000000..58cba4564
--- /dev/null
+++ b/fluent-bit/plugins/out_udp/udp_conf.h
@@ -0,0 +1,32 @@
+/* -*- 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.
+ */
+
+#ifndef FLB_OUT_UDP_CONF_H
+#define FLB_OUT_UDP_CONF_H
+
+#include <fluent-bit/flb_info.h>
+#include <fluent-bit/flb_output.h>
+
+#include "udp.h"
+
+struct flb_out_udp *flb_udp_conf_create(struct flb_output_instance *ins,
+                                        struct flb_config *config);
+void flb_udp_conf_destroy(struct flb_out_udp *ctx);
+
+#endif