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/***
* Copyright 2020 HAProxy Technologies
*
* This file is part of the HAProxy OpenTracing filter.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _OPENTRACING_CONF_H_
#define _OPENTRACING_CONF_H_
#define FLT_OT_CONF(f) ((struct flt_ot_conf *)FLT_CONF(f))
#define FLT_OT_CONF_HDR_FMT "%p:{ { '%.*s' %zu %d } "
#define FLT_OT_CONF_HDR_ARGS(a,b) (a), (int)(a)->b##_len, (a)->b, (a)->b##_len, (a)->cfg_line
#define FLT_OT_STR_HDR_ARGS(a,b) (a)->b, (a)->b##_len
#define FLT_OT_DBG_CONF_SAMPLE_EXPR(f,a) \
FLT_OT_DBG(3, "%s%p:{ '%s' %p }", (f), (a), (a)->value, (a)->expr)
#define FLT_OT_DBG_CONF_SAMPLE(f,a) \
FLT_OT_DBG(3, "%s%p:{ '%s' '%s' %s %d }", \
(f), (a), (a)->key, (a)->value, flt_ot_list_debug(&((a)->exprs)), (a)->num_exprs)
#define FLT_OT_DBG_CONF_STR(f,a) \
FLT_OT_DBG(3, f FLT_OT_CONF_HDR_FMT "}", FLT_OT_CONF_HDR_ARGS(a, str))
#define FLT_OT_DBG_CONF_CONTEXT(f,a) \
FLT_OT_DBG(3, f FLT_OT_CONF_HDR_FMT "0x%02hhx }", FLT_OT_CONF_HDR_ARGS(a, id), (a)->flags)
#define FLT_OT_DBG_CONF_SPAN(f,a) \
FLT_OT_DBG(3, f FLT_OT_CONF_HDR_FMT "'%s' %zu %d '%s' %zu %hhu 0x%02hhx %s %s %s }", \
FLT_OT_CONF_HDR_ARGS(a, id), FLT_OT_STR_HDR_ARGS(a, ref_id), (a)->ref_type, \
FLT_OT_STR_HDR_ARGS(a, ctx_id), (a)->flag_root, (a)->ctx_flags, flt_ot_list_debug(&((a)->tags)), \
flt_ot_list_debug(&((a)->logs)), flt_ot_list_debug(&((a)->baggages)))
#define FLT_OT_DBG_CONF_SCOPE(f,a) \
FLT_OT_DBG(3, f FLT_OT_CONF_HDR_FMT "%hhu %d %s %p %s %s %s }", \
FLT_OT_CONF_HDR_ARGS(a, id), (a)->flag_used, (a)->event, flt_ot_list_debug(&((a)->acls)), \
(a)->cond, flt_ot_list_debug(&((a)->contexts)), flt_ot_list_debug(&((a)->spans)), \
flt_ot_list_debug(&((a)->finish)))
#define FLT_OT_DBG_CONF_GROUP(f,a) \
FLT_OT_DBG(3, f FLT_OT_CONF_HDR_FMT "%hhu %s }", \
FLT_OT_CONF_HDR_ARGS(a, id), (a)->flag_used, flt_ot_list_debug(&((a)->ph_scopes)))
#define FLT_OT_DBG_CONF_PH(f,a) \
FLT_OT_DBG(3, f FLT_OT_CONF_HDR_FMT "%p }", FLT_OT_CONF_HDR_ARGS(a, id), (a)->ptr)
#define FLT_OT_DBG_CONF_TRACER(f,a) \
FLT_OT_DBG(3, f FLT_OT_CONF_HDR_FMT "'%s' %p '%s' %p %u %hhu %hhu 0x%02hhx %p:%s 0x%08x %s %s %s }", \
FLT_OT_CONF_HDR_ARGS(a, id), (a)->config, (a)->cfgbuf, (a)->plugin, (a)->tracer, (a)->rate_limit, (a)->flag_harderr, \
(a)->flag_disabled, (a)->logging, &((a)->proxy_log), flt_ot_list_debug(&((a)->proxy_log.loggers)), (a)->analyzers, \
flt_ot_list_debug(&((a)->acls)), flt_ot_list_debug(&((a)->ph_groups)), flt_ot_list_debug(&((a)->ph_scopes)))
#define FLT_OT_DBG_CONF(f,a) \
FLT_OT_DBG(3, "%s%p:{ %p '%s' '%s' %p %s %s }", \
(f), (a), (a)->proxy, (a)->id, (a)->cfg_file, (a)->tracer, \
flt_ot_list_debug(&((a)->groups)), flt_ot_list_debug(&((a)->scopes)))
#define FLT_OT_STR_HDR(a) \
struct { \
char *a; \
size_t a##_len; \
}
#define FLT_OT_CONF_HDR(a) \
struct { \
FLT_OT_STR_HDR(a); \
int cfg_line; \
struct list list; \
}
struct flt_ot_conf_hdr {
FLT_OT_CONF_HDR(id);
};
/* flt_ot_conf_sample->exprs */
struct flt_ot_conf_sample_expr {
FLT_OT_CONF_HDR(value); /* The sample value. */
struct sample_expr *expr; /* The sample expression. */
};
/*
* flt_ot_conf_span->tags
* flt_ot_conf_span->logs
* flt_ot_conf_span->baggages
*/
struct flt_ot_conf_sample {
FLT_OT_CONF_HDR(key); /* The sample name. */
char *value; /* The sample content. */
struct list exprs; /* Used to chain sample expressions. */
int num_exprs; /* Number of defined expressions. */
};
/* flt_ot_conf_scope->finish */
struct flt_ot_conf_str {
FLT_OT_CONF_HDR(str); /* String content/length. */
};
/* flt_ot_conf_scope->contexts */
struct flt_ot_conf_context {
FLT_OT_CONF_HDR(id); /* The name of the context. */
uint8_t flags; /* The type of storage from which the span context is extracted. */
};
/* flt_ot_conf_scope->spans */
struct flt_ot_conf_span {
FLT_OT_CONF_HDR(id); /* The name of the span. */
FLT_OT_STR_HDR(ref_id); /* The reference name, if used. */
int ref_type; /* The reference type. */
FLT_OT_STR_HDR(ctx_id); /* The span context name, if used. */
uint8_t ctx_flags; /* The type of storage used for the span context. */
bool flag_root; /* Whether this is a root span. */
struct list tags; /* The set of key:value tags. */
struct list logs; /* The set of key:value logs. */
struct list baggages; /* The set of key:value baggage items. */
};
struct flt_ot_conf_scope {
FLT_OT_CONF_HDR(id); /* The scope name. */
bool flag_used; /* The indication that the scope is being used. */
int event; /* FLT_OT_EVENT_* */
struct list acls; /* ACLs declared on this scope. */
struct acl_cond *cond; /* ACL condition to meet. */
struct list contexts; /* Declared contexts. */
struct list spans; /* Declared spans. */
struct list finish; /* The list of spans to be finished. */
};
struct flt_ot_conf_group {
FLT_OT_CONF_HDR(id); /* The group name. */
bool flag_used; /* The indication that the group is being used. */
struct list ph_scopes; /* List of all used scopes. */
};
struct flt_ot_conf_ph {
FLT_OT_CONF_HDR(id); /* The scope/group name. */
void *ptr; /* Pointer to real placeholder structure. */
};
#define flt_ot_conf_ph_group flt_ot_conf_ph
#define flt_ot_conf_ph_scope flt_ot_conf_ph
struct flt_ot_conf_tracer {
FLT_OT_CONF_HDR(id); /* The tracer name. */
char *config; /* The OpenTracing configuration file name. */
char *cfgbuf; /* The OpenTracing configuration. */
char *plugin; /* The OpenTracing plugin library file name. */
struct otc_tracer *tracer; /* The OpenTracing tracer handle. */
uint32_t rate_limit; /* [0 2^32-1] <-> [0.0 100.0] */
bool flag_harderr; /* [0 1] */
bool flag_disabled; /* [0 1] */
uint8_t logging; /* [0 1 3] */
struct proxy proxy_log; /* The log server list. */
uint analyzers; /* Defined channel analyzers. */
struct list acls; /* ACLs declared on this tracer. */
struct list ph_groups; /* List of all used groups. */
struct list ph_scopes; /* List of all used scopes. */
};
struct flt_ot_counters {
#ifdef DEBUG_OT
struct {
bool flag_used; /* Whether this event is used. */
uint64_t htx[2]; /* htx_is_empty() function result counter. */
} event[FLT_OT_EVENT_MAX];
#endif
uint64_t disabled[2]; /* How many times stream processing is disabled. */
};
/* The OpenTracing filter configuration. */
struct flt_ot_conf {
struct proxy *proxy; /* Proxy owning the filter. */
char *id; /* The OpenTracing filter id. */
char *cfg_file; /* The OpenTracing filter configuration file name. */
struct flt_ot_conf_tracer *tracer; /* There can only be one tracer. */
struct list groups; /* List of all available groups. */
struct list scopes; /* List of all available scopes. */
struct flt_ot_counters cnt; /* Various counters related to filter operation. */
};
#define flt_ot_conf_ph_group_free flt_ot_conf_ph_free
#define flt_ot_conf_ph_scope_free flt_ot_conf_ph_free
struct flt_ot_conf_ph *flt_ot_conf_ph_init(const char *id, int linenum, struct list *head, char **err);
void flt_ot_conf_ph_free(struct flt_ot_conf_ph **ptr);
struct flt_ot_conf_sample_expr *flt_ot_conf_sample_expr_init(const char *id, int linenum, struct list *head, char **err);
void flt_ot_conf_sample_expr_free(struct flt_ot_conf_sample_expr **ptr);
struct flt_ot_conf_sample *flt_ot_conf_sample_init(char **args, int linenum, struct list *head, char **err);
void flt_ot_conf_sample_free(struct flt_ot_conf_sample **ptr);
struct flt_ot_conf_str *flt_ot_conf_str_init(const char *id, int linenum, struct list *head, char **err);
void flt_ot_conf_str_free(struct flt_ot_conf_str **ptr);
struct flt_ot_conf_context *flt_ot_conf_context_init(const char *id, int linenum, struct list *head, char **err);
void flt_ot_conf_context_free(struct flt_ot_conf_context **ptr);
struct flt_ot_conf_span *flt_ot_conf_span_init(const char *id, int linenum, struct list *head, char **err);
void flt_ot_conf_span_free(struct flt_ot_conf_span **ptr);
struct flt_ot_conf_scope *flt_ot_conf_scope_init(const char *id, int linenum, struct list *head, char **err);
void flt_ot_conf_scope_free(struct flt_ot_conf_scope **ptr);
struct flt_ot_conf_group *flt_ot_conf_group_init(const char *id, int linenum, struct list *head, char **err);
void flt_ot_conf_group_free(struct flt_ot_conf_group **ptr);
struct flt_ot_conf_tracer *flt_ot_conf_tracer_init(const char *id, int linenum, char **err);
void flt_ot_conf_tracer_free(struct flt_ot_conf_tracer **ptr);
struct flt_ot_conf *flt_ot_conf_init(struct proxy *px);
void flt_ot_conf_free(struct flt_ot_conf **ptr);
#endif /* _OPENTRACING_CONF_H_ */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*
* vi: noexpandtab shiftwidth=8 tabstop=8
*/
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