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Diffstat (limited to 'src/fluent-bit/plugins/out_forward/forward.h')
| -rw-r--r-- | src/fluent-bit/plugins/out_forward/forward.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/out_forward/forward.h b/src/fluent-bit/plugins/out_forward/forward.h new file mode 100644 index 000000000..8e77e6e11 --- /dev/null +++ b/src/fluent-bit/plugins/out_forward/forward.h @@ -0,0 +1,146 @@ +/* -*- 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_FORWARD +#define FLB_OUT_FORWARD + +#include <fluent-bit/flb_info.h> +#include <fluent-bit/flb_sds.h> +#include <fluent-bit/flb_upstream_ha.h> +#include <fluent-bit/flb_record_accessor.h> +#include <fluent-bit/flb_connection.h> +#include <fluent-bit/flb_pthread.h> +#include <cfl/cfl_list.h> + +/* + * Forward modes + * ============= + */ + +/* + * Message mode + * ------------ + * https://github.com/fluent/fluentd/wiki/Forward-Protocol-Specification-v1#message-modes + */ +#define MODE_MESSAGE 0 + +/* + * Forward mode + * ------------ + * https://github.com/fluent/fluentd/wiki/Forward-Protocol-Specification-v1#forward-mode + */ +#define MODE_FORWARD 1 + +/* + * Forward Compat: similar to MODE_FORWARD, but it sends the timestamps as unsigned + * integers for compatibility with very old versions of Fluentd that don't have timestamps + * with nanoseconds. This mode only applies for Logs. + */ +#define MODE_FORWARD_COMPAT 3 + +/* Compression options */ +#define COMPRESS_NONE 0 +#define COMPRESS_GZIP 1 + +/* + * Configuration: we put this separate from the main + * context so every Upstream Node can have it own configuration + * reference and pass it smoothly to the required caller. + * + * On simple mode (no HA), the structure is referenced + * by flb_forward->config. In HA mode the structure is referenced + * by the Upstream node context as an opaque data type. + */ +struct flb_forward_config { + int secured; /* Using Secure Forward mode ? */ + int compress; /* Using compression ? */ + int time_as_integer; /* Use backward compatible timestamp ? */ + int fluentd_compat; /* Use Fluentd compatible payload for + * metrics and ctraces */ + + /* add extra options to the Forward payload (advanced) */ + struct mk_list *extra_options; + + int fwd_retain_metadata; /* Do not drop metadata in forward mode */ + + /* config */ + flb_sds_t shared_key; /* shared key */ + flb_sds_t self_hostname; /* hostname used in certificate */ + flb_sds_t tag; /* Overwrite tag on forward */ + int empty_shared_key; /* use an empty string as shared key */ + int require_ack_response; /* Require acknowledge for "chunk" */ + int send_options; /* send options in messages */ + flb_sds_t unix_path; /* unix socket path */ + int unix_fd; + + const char *username; + const char *password; + + /* mbedTLS specifics */ + unsigned char shared_key_salt[16]; + +#ifdef FLB_HAVE_RECORD_ACCESSOR + struct flb_record_accessor *ra_tag; /* Tag Record accessor */ + int ra_static; /* Is the record accessor static ? */ +#endif + int (*io_write)(struct flb_connection* conn, int fd, const void* data, + size_t len, size_t *out_len); + int (*io_read)(struct flb_connection* conn, int fd, void* buf, size_t len); + struct mk_list _head; /* Link to list flb_forward->configs */ +}; + +struct flb_forward_uds_connection { + flb_sockfd_t descriptor; + struct cfl_list _head; /* Link to list flb_forward->uds_connnection_list */ +}; + +/* Plugin Context */ +struct flb_forward { + /* if HA mode is enabled */ + int ha_mode; /* High Availability mode enabled ? */ + char *ha_upstream; /* Upstream configuration file */ + struct flb_upstream_ha *ha; + + struct cfl_list uds_connection_list; + pthread_mutex_t uds_connection_list_mutex; + + /* Upstream handler and config context for single mode (no HA) */ + struct flb_upstream *u; + struct mk_list configs; + struct flb_output_instance *ins; +}; + +struct flb_forward_ping { + const char *nonce; + int nonce_len; + const char *auth; + int auth_len; + int keepalive; +}; + +/* Flush callback context */ +struct flb_forward_flush { + struct flb_forward_config *fc; + char checksum_hex[33]; +}; + +struct flb_forward_config *flb_forward_target(struct flb_forward *ctx, + struct flb_upstream_node **node); + +#endif |