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-rw-r--r--src/fluent-bit/plugins/out_azure_blob/azure_blob.c594
1 files changed, 594 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/out_azure_blob/azure_blob.c b/src/fluent-bit/plugins/out_azure_blob/azure_blob.c
new file mode 100644
index 000000000..3f539826d
--- /dev/null
+++ b/src/fluent-bit/plugins/out_azure_blob/azure_blob.c
@@ -0,0 +1,594 @@
+/* -*- 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_sds.h>
+#include <fluent-bit/flb_kv.h>
+#include <fluent-bit/flb_utils.h>
+#include <fluent-bit/flb_pack.h>
+#include <fluent-bit/flb_config_map.h>
+#include <fluent-bit/flb_gzip.h>
+#include <fluent-bit/flb_base64.h>
+
+#include <msgpack.h>
+
+#include "azure_blob.h"
+#include "azure_blob_uri.h"
+#include "azure_blob_conf.h"
+#include "azure_blob_appendblob.h"
+#include "azure_blob_blockblob.h"
+#include "azure_blob_http.h"
+
+#define CREATE_BLOB 1337
+
+static int azure_blob_format(struct flb_config *config,
+ struct flb_input_instance *ins,
+ void *plugin_context,
+ void *flush_ctx,
+ int event_type,
+ const char *tag, int tag_len,
+ const void *data, size_t bytes,
+ void **out_data, size_t *out_size)
+{
+ flb_sds_t out_buf;
+ struct flb_azure_blob *ctx = plugin_context;
+
+ out_buf = flb_pack_msgpack_to_json_format(data, bytes,
+ FLB_PACK_JSON_FORMAT_LINES,
+ FLB_PACK_JSON_DATE_ISO8601,
+ ctx->date_key);
+ if (!out_buf) {
+ return -1;
+ }
+
+ *out_data = out_buf;
+ *out_size = flb_sds_len(out_buf);
+ return 0;
+}
+
+static int send_blob(struct flb_config *config,
+ struct flb_input_instance *i_ins,
+ struct flb_azure_blob *ctx, char *name,
+ char *tag, int tag_len, void *data, size_t bytes)
+{
+ int ret;
+ int compressed = FLB_FALSE;
+ int content_encoding = FLB_FALSE;
+ int content_type = FLB_FALSE;
+ uint64_t ms = 0;
+ size_t b_sent;
+ void *out_buf;
+ size_t out_size;
+ flb_sds_t uri = NULL;
+ flb_sds_t blockid = NULL;
+ void *payload_buf;
+ size_t payload_size;
+ struct flb_http_client *c;
+ struct flb_connection *u_conn;
+
+ if (ctx->btype == AZURE_BLOB_APPENDBLOB) {
+ uri = azb_append_blob_uri(ctx, tag);
+ }
+ else if (ctx->btype == AZURE_BLOB_BLOCKBLOB) {
+ blockid = azb_block_blob_id(&ms);
+ if (!blockid) {
+ flb_plg_error(ctx->ins, "could not generate block id");
+ return FLB_RETRY;
+ }
+ uri = azb_block_blob_uri(ctx, tag, blockid, ms);
+ }
+
+ if (!uri) {
+ flb_free(blockid);
+ return FLB_RETRY;
+ }
+
+ /* Get upstream connection */
+ u_conn = flb_upstream_conn_get(ctx->u);
+ if (!u_conn) {
+ flb_plg_error(ctx->ins,
+ "cannot create upstream connection for append_blob");
+ flb_sds_destroy(uri);
+ flb_free(blockid);
+ return FLB_RETRY;
+ }
+
+ /* Format the data */
+ ret = azure_blob_format(config, i_ins,
+ ctx, NULL,
+ FLB_EVENT_TYPE_LOGS,
+ tag, tag_len,
+ data, bytes,
+ &out_buf, &out_size);
+ if (ret != 0) {
+ flb_upstream_conn_release(u_conn);
+ flb_sds_destroy(uri);
+ flb_free(blockid);
+ return FLB_RETRY;
+ }
+
+ /* Map buffer */
+ payload_buf = out_buf;
+ payload_size = out_size;
+
+ if (ctx->compress_gzip == FLB_TRUE || ctx->compress_blob == FLB_TRUE) {
+ ret = flb_gzip_compress((void *) out_buf, out_size,
+ &payload_buf, &payload_size);
+ if (ret == -1) {
+ flb_plg_error(ctx->ins,
+ "cannot gzip payload, disabling compression");
+ }
+ else {
+ compressed = FLB_TRUE;
+ /* JSON buffer is not longer needed */
+ flb_sds_destroy(out_buf);
+ }
+ }
+
+ if (ctx->compress_blob == FLB_TRUE) {
+ content_encoding = AZURE_BLOB_CE_NONE;
+ content_type = AZURE_BLOB_CT_GZIP;
+ }
+ else if (compressed == FLB_TRUE) {
+ content_encoding = AZURE_BLOB_CE_GZIP;
+ content_type = AZURE_BLOB_CT_JSON;
+ }
+
+ /* Create HTTP client context */
+ c = flb_http_client(u_conn, FLB_HTTP_PUT,
+ uri,
+ payload_buf, payload_size, NULL, 0, NULL, 0);
+ if (!c) {
+ flb_plg_error(ctx->ins, "cannot create HTTP client context");
+ flb_sds_destroy(out_buf);
+ flb_upstream_conn_release(u_conn);
+ flb_free(blockid);
+ return FLB_RETRY;
+ }
+
+ /* Prepare headers and authentication */
+ azb_http_client_setup(ctx, c, (ssize_t) payload_size, FLB_FALSE,
+ content_type, content_encoding);
+
+ /* Send HTTP request */
+ ret = flb_http_do(c, &b_sent);
+ flb_sds_destroy(uri);
+
+ /* Release */
+ if (compressed == FLB_FALSE) {
+ flb_sds_destroy(out_buf);
+ }
+ else {
+ flb_free(payload_buf);
+ }
+
+ flb_upstream_conn_release(u_conn);
+
+ /* Validate HTTP status */
+ if (ret == -1) {
+ flb_plg_error(ctx->ins, "error sending append_blob");
+ flb_free(blockid);
+ return FLB_RETRY;
+ }
+
+ if (c->resp.status == 201) {
+ flb_plg_info(ctx->ins, "content appended to blob successfully");
+ flb_http_client_destroy(c);
+
+ if (ctx->btype == AZURE_BLOB_BLOCKBLOB) {
+ ret = azb_block_blob_commit(ctx, blockid, tag, ms);
+ flb_free(blockid);
+ return ret;
+ }
+ flb_free(blockid);
+ return FLB_OK;
+ }
+ else if (c->resp.status == 404) {
+ flb_plg_info(ctx->ins, "blob not found: %s", c->uri);
+ flb_http_client_destroy(c);
+ return CREATE_BLOB;
+ }
+ else if (c->resp.payload_size > 0) {
+ flb_plg_error(ctx->ins, "cannot append content to blob\n%s",
+ c->resp.payload);
+ if (strstr(c->resp.payload, "must be 0 for Create Append")) {
+ flb_http_client_destroy(c);
+ return CREATE_BLOB;
+ }
+ }
+ else {
+ flb_plg_error(ctx->ins, "cannot append content to blob");
+ }
+ flb_http_client_destroy(c);
+
+ return FLB_RETRY;
+}
+
+static int create_blob(struct flb_azure_blob *ctx, char *name)
+{
+ int ret;
+ size_t b_sent;
+ flb_sds_t uri = NULL;
+ struct flb_http_client *c;
+ struct flb_connection *u_conn;
+
+ uri = azb_uri_create_blob(ctx, name);
+ if (!uri) {
+ return FLB_RETRY;
+ }
+
+ /* Get upstream connection */
+ u_conn = flb_upstream_conn_get(ctx->u);
+ if (!u_conn) {
+ flb_plg_error(ctx->ins,
+ "cannot create upstream connection for create_append_blob");
+ flb_sds_destroy(uri);
+ return FLB_RETRY;
+ }
+
+ /* Create HTTP client context */
+ c = flb_http_client(u_conn, FLB_HTTP_PUT,
+ uri,
+ NULL, 0, NULL, 0, NULL, 0);
+ if (!c) {
+ flb_plg_error(ctx->ins, "cannot create HTTP client context");
+ flb_upstream_conn_release(u_conn);
+ flb_sds_destroy(uri);
+ return FLB_RETRY;
+ }
+
+ /* Prepare headers and authentication */
+ azb_http_client_setup(ctx, c, -1, FLB_TRUE,
+ AZURE_BLOB_CT_NONE, AZURE_BLOB_CE_NONE);
+
+ /* Send HTTP request */
+ ret = flb_http_do(c, &b_sent);
+ flb_sds_destroy(uri);
+
+ if (ret == -1) {
+ flb_plg_error(ctx->ins, "error sending append_blob");
+ flb_http_client_destroy(c);
+ flb_upstream_conn_release(u_conn);
+ return FLB_RETRY;
+ }
+
+ if (c->resp.status == 201) {
+ flb_plg_info(ctx->ins, "blob created successfully: %s", c->uri);
+ }
+ else {
+ if (c->resp.payload_size > 0) {
+ flb_plg_error(ctx->ins, "http_status=%i cannot create append blob\n%s",
+ c->resp.status, c->resp.payload);
+ }
+ else {
+ flb_plg_error(ctx->ins, "http_status=%i cannot create append blob",
+ c->resp.status);
+ }
+ flb_http_client_destroy(c);
+ flb_upstream_conn_release(u_conn);
+ return FLB_RETRY;
+ }
+
+ flb_http_client_destroy(c);
+ flb_upstream_conn_release(u_conn);
+ return FLB_OK;
+}
+
+static int create_container(struct flb_azure_blob *ctx, char *name)
+{
+ int ret;
+ size_t b_sent;
+ flb_sds_t uri;
+ struct flb_http_client *c;
+ struct flb_connection *u_conn;
+
+ /* Get upstream connection */
+ u_conn = flb_upstream_conn_get(ctx->u);
+ if (!u_conn) {
+ flb_plg_error(ctx->ins,
+ "cannot create upstream connection for container creation");
+ return FLB_FALSE;
+ }
+
+ /* URI */
+ uri = azb_uri_ensure_or_create_container(ctx);
+ if (!uri) {
+ flb_upstream_conn_release(u_conn);
+ return FLB_FALSE;
+ }
+
+ /* Create HTTP client context */
+ c = flb_http_client(u_conn, FLB_HTTP_PUT,
+ uri,
+ NULL, 0, NULL, 0, NULL, 0);
+ if (!c) {
+ flb_plg_error(ctx->ins, "cannot create HTTP client context");
+ flb_upstream_conn_release(u_conn);
+ return FLB_FALSE;
+ }
+
+ /* Prepare headers and authentication */
+ azb_http_client_setup(ctx, c, -1, FLB_FALSE,
+ AZURE_BLOB_CT_NONE, AZURE_BLOB_CE_NONE);
+
+ /* Send HTTP request */
+ ret = flb_http_do(c, &b_sent);
+
+ /* Release URI */
+ flb_sds_destroy(uri);
+
+ /* Validate http response */
+ if (ret == -1) {
+ flb_plg_error(ctx->ins, "error requesting container creation");
+ flb_http_client_destroy(c);
+ flb_upstream_conn_release(u_conn);
+ return FLB_FALSE;
+ }
+
+ if (c->resp.status == 201) {
+ flb_plg_info(ctx->ins, "container '%s' created sucessfully", name);
+ }
+ else {
+ if (c->resp.payload_size > 0) {
+ flb_plg_error(ctx->ins, "cannot create container '%s'\n%s",
+ name, c->resp.payload);
+ }
+ else {
+ flb_plg_error(ctx->ins, "cannot create container '%s'\n%s",
+ name, c->resp.payload);
+ }
+ flb_http_client_destroy(c);
+ flb_upstream_conn_release(u_conn);
+ return FLB_FALSE;
+ }
+
+ flb_http_client_destroy(c);
+ flb_upstream_conn_release(u_conn);
+ return FLB_TRUE;
+}
+
+/*
+ * Check that the container exists, if it doesn't and the configuration property
+ * auto_create_container is enabled, it will send a request to create it. If it
+ * could not be created or auto_create_container is disabled, it returns FLB_FALSE.
+ */
+static int ensure_container(struct flb_azure_blob *ctx)
+{
+ int ret;
+ int status;
+ size_t b_sent;
+ flb_sds_t uri;
+ struct flb_http_client *c;
+ struct flb_connection *u_conn;
+
+ uri = azb_uri_ensure_or_create_container(ctx);
+ if (!uri) {
+ return FLB_FALSE;
+ }
+
+ /* Get upstream connection */
+ u_conn = flb_upstream_conn_get(ctx->u);
+ if (!u_conn) {
+ flb_plg_error(ctx->ins,
+ "cannot create upstream connection for container check");
+ flb_sds_destroy(uri);
+ return FLB_FALSE;
+ }
+
+ /* Create HTTP client context */
+ c = flb_http_client(u_conn, FLB_HTTP_GET,
+ uri,
+ NULL, 0, NULL, 0, NULL, 0);
+ if (!c) {
+ flb_plg_error(ctx->ins, "cannot create HTTP client context");
+ flb_upstream_conn_release(u_conn);
+ return FLB_FALSE;
+ }
+ flb_http_strip_port_from_host(c);
+
+ /* Prepare headers and authentication */
+ azb_http_client_setup(ctx, c, -1, FLB_FALSE,
+ AZURE_BLOB_CT_NONE, AZURE_BLOB_CE_NONE);
+
+ /* Send HTTP request */
+ ret = flb_http_do(c, &b_sent);
+ flb_sds_destroy(uri);
+
+ if (ret == -1) {
+ flb_plg_error(ctx->ins, "error requesting container properties");
+ flb_upstream_conn_release(u_conn);
+ return FLB_FALSE;
+ }
+
+ status = c->resp.status;
+ flb_http_client_destroy(c);
+
+ /* Release connection */
+ flb_upstream_conn_release(u_conn);
+
+ /* Request was successful, validate HTTP status code */
+ if (status == 404) {
+ /* The container was not found, try to create it */
+ flb_plg_info(ctx->ins, "container '%s' not found, trying to create it",
+ ctx->container_name);
+ ret = create_container(ctx, ctx->container_name);
+ return ret;
+ }
+ else if (status == 200) {
+ return FLB_TRUE;
+ }
+
+ return FLB_FALSE;
+}
+
+static int cb_azure_blob_init(struct flb_output_instance *ins,
+ struct flb_config *config, void *data)
+{
+ struct flb_azure_blob *ctx = NULL;
+ (void) ins;
+ (void) config;
+ (void) data;
+
+ ctx = flb_azure_blob_conf_create(ins, config);
+ if (!ctx) {
+ return -1;
+ }
+
+ flb_output_set_http_debug_callbacks(ins);
+ return 0;
+}
+
+static void cb_azure_blob_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;
+ struct flb_azure_blob *ctx = out_context;
+ (void) i_ins;
+ (void) config;
+
+ /* Validate the container exists, otherwise just create it */
+ ret = ensure_container(ctx);
+ if (ret == FLB_FALSE) {
+ FLB_OUTPUT_RETURN(FLB_RETRY);
+ }
+
+ ret = send_blob(config, i_ins, ctx,
+ (char *) event_chunk->tag, /* use tag as 'name' */
+ (char *) event_chunk->tag, flb_sds_len(event_chunk->tag),
+ (char *) event_chunk->data, event_chunk->size);
+
+ if (ret == CREATE_BLOB) {
+ ret = create_blob(ctx, event_chunk->tag);
+ if (ret == FLB_OK) {
+ ret = send_blob(config, i_ins, ctx,
+ (char *) event_chunk->tag, /* use tag as 'name' */
+ (char *) event_chunk->tag,
+ flb_sds_len(event_chunk->tag),
+ (char *) event_chunk->data, event_chunk->size);
+ }
+ }
+
+ /* FLB_RETRY, FLB_OK, FLB_ERROR */
+ FLB_OUTPUT_RETURN(ret);
+}
+
+static int cb_azure_blob_exit(void *data, struct flb_config *config)
+{
+ struct flb_azure_blob *ctx = data;
+
+ if (!ctx) {
+ return 0;
+ }
+
+ flb_azure_blob_conf_destroy(ctx);
+ return 0;
+}
+
+/* Configuration properties map */
+static struct flb_config_map config_map[] = {
+ {
+ FLB_CONFIG_MAP_STR, "account_name", NULL,
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, account_name),
+ "Azure account name (mandatory)"
+ },
+
+ {
+ FLB_CONFIG_MAP_STR, "container_name", NULL,
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, container_name),
+ "Container name (mandatory)"
+ },
+
+ {
+ FLB_CONFIG_MAP_BOOL, "auto_create_container", "true",
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, auto_create_container),
+ "Auto create container if it don't exists"
+ },
+
+ {
+ FLB_CONFIG_MAP_STR, "blob_type", "appendblob",
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, blob_type),
+ "Set the block type: appendblob or blockblob"
+ },
+
+ {
+ FLB_CONFIG_MAP_STR, "compress", NULL,
+ 0, FLB_FALSE, 0,
+ "Set payload compression in network transfer. Option available is 'gzip'"
+ },
+
+ {
+ FLB_CONFIG_MAP_BOOL, "compress_blob", "false",
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, compress_blob),
+ "Enable block blob GZIP compression in the final blob file. This option is "
+ "not compatible with 'appendblob' block type"
+ },
+
+ {
+ FLB_CONFIG_MAP_BOOL, "emulator_mode", "false",
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, emulator_mode),
+ "Use emulator mode, enable it if you want to use Azurite"
+ },
+
+ {
+ FLB_CONFIG_MAP_STR, "shared_key", NULL,
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, shared_key),
+ "Azure shared key"
+ },
+
+ {
+ FLB_CONFIG_MAP_STR, "endpoint", NULL,
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, endpoint),
+ "Custom full URL endpoint to use an emulator"
+ },
+
+ {
+ FLB_CONFIG_MAP_STR, "path", NULL,
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, path),
+ "Set a path for your blob"
+ },
+
+ {
+ FLB_CONFIG_MAP_STR, "date_key", "@timestamp",
+ 0, FLB_TRUE, offsetof(struct flb_azure_blob, date_key),
+ "Name of the key that will have the record timestamp"
+ },
+
+ /* EOF */
+ {0}
+};
+
+/* Plugin registration */
+struct flb_output_plugin out_azure_blob_plugin = {
+ .name = "azure_blob",
+ .description = "Azure Blob Storage",
+ .cb_init = cb_azure_blob_init,
+ .cb_flush = cb_azure_blob_flush,
+ .cb_exit = cb_azure_blob_exit,
+
+ /* Test */
+ .test_formatter.callback = azure_blob_format,
+
+ .config_map = config_map,
+
+ /* Plugin flags */
+ .flags = FLB_OUTPUT_NET | FLB_IO_OPT_TLS,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-08 19:20:57 +0000