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-rw-r--r--addons/ot/include/cli.h50
-rw-r--r--addons/ot/include/conf.h228
-rw-r--r--addons/ot/include/config.h46
-rw-r--r--addons/ot/include/debug.h104
-rw-r--r--addons/ot/include/define.h107
-rw-r--r--addons/ot/include/event.h120
-rw-r--r--addons/ot/include/filter.h68
-rw-r--r--addons/ot/include/group.h61
-rw-r--r--addons/ot/include/http.h41
-rw-r--r--addons/ot/include/include.h66
-rw-r--r--addons/ot/include/opentracing.h86
-rw-r--r--addons/ot/include/parser.h172
-rw-r--r--addons/ot/include/pool.h39
-rw-r--r--addons/ot/include/scope.h126
-rw-r--r--addons/ot/include/util.h109
-rw-r--r--addons/ot/include/vars.h55
16 files changed, 1478 insertions, 0 deletions
diff --git a/addons/ot/include/cli.h b/addons/ot/include/cli.h
new file mode 100644
index 0000000..80ed6e8
--- /dev/null
+++ b/addons/ot/include/cli.h
@@ -0,0 +1,50 @@
+/***
+ * 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_CLI_H_
+#define _OPENTRACING_CLI_H_
+
+#define FLT_OT_CLI_CMD "flt-ot"
+
+#define FLT_OT_CLI_LOGGING_OFF "off"
+#define FLT_OT_CLI_LOGGING_ON "on"
+#define FLT_OT_CLI_LOGGING_NOLOGNORM "dontlog-normal"
+#define FLT_OT_CLI_LOGGING_STATE(a) ((a) & FLT_OT_LOGGING_ON) ? (((a) & FLT_OT_LOGGING_NOLOGNORM) ? "enabled, " FLT_OT_CLI_LOGGING_NOLOGNORM : "enabled") : "disabled"
+
+#define FLT_OT_CLI_MSG_CAT(a) ((a) == NULL) ? "" : (a), ((a) == NULL) ? "" : "\n"
+
+enum FLT_OT_LOGGING_enum {
+ FLT_OT_LOGGING_OFF = 0,
+ FLT_OT_LOGGING_ON = 1 << 0,
+ FLT_OT_LOGGING_NOLOGNORM = 1 << 1,
+};
+
+
+void flt_ot_cli_init(void);
+
+#endif /* _OPENTRACING_CLI_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/conf.h b/addons/ot/include/conf.h
new file mode 100644
index 0000000..a4bb7fc
--- /dev/null
+++ b/addons/ot/include/conf.h
@@ -0,0 +1,228 @@
+/***
+ * 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.logsrvs)), (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
+ */
diff --git a/addons/ot/include/config.h b/addons/ot/include/config.h
new file mode 100644
index 0000000..3b26365
--- /dev/null
+++ b/addons/ot/include/config.h
@@ -0,0 +1,46 @@
+/***
+ * 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_CONFIG_H_
+#define _OPENTRACING_CONFIG_H_
+
+#undef DEBUG_OT_SYSTIME
+#define USE_POOL_BUFFER
+#define USE_POOL_OT_SPAN_CONTEXT
+#define USE_POOL_OT_SCOPE_SPAN
+#define USE_POOL_OT_SCOPE_CONTEXT
+#define USE_POOL_OT_RUNTIME_CONTEXT
+#define USE_TRASH_CHUNK
+
+#define FLT_OT_ID_MAXLEN 64
+#define FLT_OT_MAXTAGS 8
+#define FLT_OT_MAXBAGGAGES 8
+#define FLT_OT_RATE_LIMIT_MAX 100.0
+#define FLT_OT_DEBUG_LEVEL 0b00001111
+
+#endif /* _OPENTRACING_CONFIG_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/debug.h b/addons/ot/include/debug.h
new file mode 100644
index 0000000..6274961
--- /dev/null
+++ b/addons/ot/include/debug.h
@@ -0,0 +1,104 @@
+/***
+ * 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_DEBUG_H_
+#define _OPENTRACING_DEBUG_H_
+
+#ifdef DEBUG_FULL
+# define DEBUG_OT
+#endif
+
+#ifdef DEBUG_OT
+# ifdef DEBUG_OT_SYSTIME
+# define FLT_OT_DBG_FMT(f) "[% 2d] %ld.%06ld [" FLT_OT_SCOPE "]: " f, tid, now.tv_sec, now.tv_usec
+# else
+# define FLT_OT_DBG_FMT(f) "[% 2d] %11.6f [" FLT_OT_SCOPE "]: " f, tid, FLT_OT_TV_UDIFF(&(flt_ot_debug.start), &now) / 1e6
+# endif
+# define FLT_OT_DBG_INDENT " "
+# define FLT_OT_DBG(l,f, ...) \
+ do { \
+ if (!(l) || (flt_ot_debug.level & (1 << (l)))) \
+ (void)fprintf(stderr, FLT_OT_DBG_FMT("%.*s" f "\n"), \
+ dbg_indent_level, FLT_OT_DBG_INDENT, ##__VA_ARGS__); \
+ } while (0)
+# define FLT_OT_FUNC(f, ...) do { FLT_OT_DBG(1, "%s(" f ") {", __func__, ##__VA_ARGS__); dbg_indent_level += 3; } while (0)
+# define FLT_OT_RETURN(a) do { dbg_indent_level -= 3; FLT_OT_DBG(1, "}"); return a; } while (0)
+# define FLT_OT_RETURN_EX(a,t,f) do { dbg_indent_level -= 3; { t _r = (a); FLT_OT_DBG(1, "} = " f, _r); return _r; } } while (0)
+# define FLT_OT_RETURN_INT(a) FLT_OT_RETURN_EX((a), int, "%d")
+# define FLT_OT_RETURN_PTR(a) FLT_OT_RETURN_EX((a), void *, "%p")
+# define FLT_OT_DBG_IFDEF(a,b) a
+# define FLT_OT_DBG_ARGS(a, ...) a, ##__VA_ARGS__
+# define FLT_OT_DBG_BUF(a,b) do { FLT_OT_DBG((a), "%p:{ %zu %p %zu %zu }", (b), (b)->size, (b)->area, (b)->data, (b)->head); } while (0)
+
+struct flt_ot_debug {
+#ifndef DEBUG_OT_SYSTIME
+ struct timeval start;
+#endif
+ uint8_t level;
+};
+
+
+extern THREAD_LOCAL int dbg_indent_level;
+extern struct flt_ot_debug flt_ot_debug;
+
+#else
+
+# define FLT_OT_DBG(...) while (0)
+# define FLT_OT_FUNC(...) while (0)
+# define FLT_OT_RETURN(a) return a
+# define FLT_OT_RETURN_EX(a,t,f) return a
+# define FLT_OT_RETURN_INT(a) return a
+# define FLT_OT_RETURN_PTR(a) return a
+# define FLT_OT_DBG_IFDEF(a,b) b
+# define FLT_OT_DBG_ARGS(...)
+# define FLT_OT_DBG_BUF(a,b) while (0)
+#endif /* DEBUG_OT */
+
+/*
+ * ON | NOLOGNORM |
+ * -----+-----------+-------------
+ * 0 | 0 | no log
+ * 0 | 1 | no log
+ * 1 | 0 | log all
+ * 1 | 1 | log errors
+ * -----+-----------+-------------
+ */
+#define FLT_OT_LOG(l,f, ...) \
+ do { \
+ if (!(conf->tracer->logging & FLT_OT_LOGGING_ON)) \
+ FLT_OT_DBG(3, "NOLOG[%d]: [" FLT_OT_SCOPE "]: [%s] " f, (l), conf->id, ##__VA_ARGS__); \
+ else if ((conf->tracer->logging & FLT_OT_LOGGING_NOLOGNORM) && ((l) > LOG_ERR)) \
+ FLT_OT_DBG(2, "NOLOG[%d]: [" FLT_OT_SCOPE "]: [%s] " f, (l), conf->id, ##__VA_ARGS__); \
+ else { \
+ send_log(&(conf->tracer->proxy_log), (l), "[" FLT_OT_SCOPE "]: [%s] " f "\n", conf->id, ##__VA_ARGS__); \
+ \
+ FLT_OT_DBG(1, "LOG[%d]: %s", (l), logline); \
+ } \
+ } while (0)
+
+#endif /* _OPENTRACING_DEBUG_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/define.h b/addons/ot/include/define.h
new file mode 100644
index 0000000..3c3e4a3
--- /dev/null
+++ b/addons/ot/include/define.h
@@ -0,0 +1,107 @@
+/***
+ * 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_DEFINE_H_
+#define _OPENTRACING_DEFINE_H_
+
+#define FLT_OT_DEREF(a,m,v) (((a) != NULL) ? (a)->m : (v))
+#define FLT_OT_DDEREF(a,m,v) ((((a) != NULL) && (*(a) != NULL)) ? (*(a))->m : (v))
+#define FLT_OT_TABLESIZE(a) (sizeof(a) / sizeof((a)[0]))
+#define FLT_OT_IN_RANGE(v,a,b) (((v) >= (a)) && ((v) <= (b)))
+#define FLT_OT_DPTR_ARGS(a) (a), ((a) == NULL) ? NULL : *(a)
+#define FLT_OT_ARG_ISVALID(n) ((args[n] != NULL) && *args[n])
+#define FLT_OT_TV_UDIFF(a,b) (((b)->tv_sec - (a)->tv_sec) * 1000000 + (b)->tv_usec - (a)->tv_usec)
+#define FLT_OT_U32_FLOAT(a,b) ((a) * (double)(b) / UINT32_MAX)
+#define FLT_OT_FLOAT_U32(a,b) ((uint32_t)((a) / (double)(b) * UINT32_MAX + 0.5))
+
+#define FLT_OT_STR_DASH_72 "------------------------------------------------------------------------"
+#define FLT_OT_STR_DASH_78 FLT_OT_STR_DASH_72 "------"
+#define FLT_OT_STR_FLAG_YN(a) (a) ? "yes" : "no"
+
+#define FLT_OT_STR_SIZE(a) (sizeof(a) - 1)
+#define FLT_OT_STR_ADDRSIZE(a) (a), FLT_OT_STR_SIZE(a)
+#define FLT_OT_STR_ISVALID(a) (((a) != NULL) && (*(a) != '\0'))
+#define FLT_OT_STR_CMP(S,s,l) (((l) == FLT_OT_STR_SIZE(S)) && (memcmp((s), FLT_OT_STR_ADDRSIZE(S)) == 0))
+#define FLT_OT_STR_ELLIPSIS(a,n) do { if ((a) != NULL) { if ((n) > 0) (a)[(n) - 1] = '\0'; if ((n) > 3) (a)[(n) - 2] = (a)[(n) - 3] = (a)[(n) - 4] = '.'; } } while (0)
+#define FLT_OT_NIBBLE_TO_HEX(a) ((a) + (((a) < 10) ? '0' : ('a' - 10)))
+
+#define FLT_OT_FREE(a) do { if ((a) != NULL) OTC_DBG_FREE(a); } while (0)
+#define FLT_OT_FREE_VOID(a) do { if ((a) != NULL) OTC_DBG_FREE((void *)(a)); } while (0)
+#define FLT_OT_FREE_CLEAR(a) do { if ((a) != NULL) { OTC_DBG_FREE(a); (a) = NULL; } } while (0)
+#define FLT_OT_STRDUP(s) OTC_DBG_STRDUP(s)
+#define FLT_OT_STRNDUP(s,n) OTC_DBG_STRNDUP((s), (n))
+#define FLT_OT_CALLOC(n,e) OTC_DBG_CALLOC((n), (e))
+#define FLT_OT_MALLOC(s) OTC_DBG_MALLOC((s))
+#define FLT_OT_MEMINFO() OTC_DBG_MEMINFO()
+
+#define FLT_OT_RUN_ONCE(f) do { static bool __f = 1; if (__f) { __f = 0; f; } } while (0)
+
+#define FLT_OT_LIST_ISVALID(a) (((a) != NULL) && ((a)->n != NULL) && ((a)->p != NULL))
+#define FLT_OT_LIST_DEL(a) do { if (FLT_OT_LIST_ISVALID(a)) LIST_DELETE(a); } while (0)
+#define FLT_OT_LIST_DESTROY(t,h) \
+ do { \
+ struct flt_ot_conf_##t *_ptr, *_back; \
+ \
+ if (!FLT_OT_LIST_ISVALID(h) || LIST_ISEMPTY(h)) \
+ break; \
+ \
+ FLT_OT_DBG(2, "- deleting " #t " list %s", flt_ot_list_debug(h)); \
+ \
+ list_for_each_entry_safe(_ptr, _back, (h), list) \
+ flt_ot_conf_##t##_free(&_ptr); \
+ } while (0)
+
+#define FLT_OT_BUFFER_THR(b,m,n,p) \
+ static THREAD_LOCAL char b[m][n]; \
+ static THREAD_LOCAL size_t __idx = 0; \
+ char *p = b[__idx]; \
+ __idx = (__idx + 1) % (m)
+
+#define FLT_OT_ERR(f, ...) \
+ do { \
+ if ((err != NULL) && (*err == NULL)) { \
+ (void)memprintf(err, f, ##__VA_ARGS__); \
+ \
+ FLT_OT_DBG(3, "%d err: '%s'", __LINE__, *err); \
+ } \
+ } while (0)
+#define FLT_OT_ERR_APPEND(f, ...) \
+ do { \
+ if (err != NULL) \
+ (void)memprintf(err, f, ##__VA_ARGS__); \
+ } while (0)
+#define FLT_OT_ERR_FREE(p) \
+ do { \
+ if ((p) == NULL) \
+ break; \
+ \
+ FLT_OT_DBG(0, "%s:%d: ERROR: %s", __func__, __LINE__, (p)); \
+ FLT_OT_FREE_CLEAR(p); \
+ } while (0)
+
+#endif /* _OPENTRACING_DEFINE_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/event.h b/addons/ot/include/event.h
new file mode 100644
index 0000000..8d59163
--- /dev/null
+++ b/addons/ot/include/event.h
@@ -0,0 +1,120 @@
+/***
+ * 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_EVENT_H_
+#define _OPENTRACING_EVENT_H_
+
+/*
+ * This must be defined in order for macro FLT_OT_EVENT_DEFINES
+ * and structure flt_ot_event_data to have the correct contents.
+ */
+#define AN_REQ_NONE 0
+#define AN_REQ_CLIENT_SESS_START 0
+#define AN_REQ_SERVER_UNAVAILABLE 0
+#define AN_REQ_CLIENT_SESS_END 0
+#define AN_RES_SERVER_SESS_START 0
+#define AN_RES_SERVER_SESS_END 0
+#define SMP_VAL_FE_ 0
+#define SMP_VAL_BE_ 0
+
+/*
+ * Event names are selected to be somewhat compatible with the SPOE filter,
+ * from which the following names are taken:
+ * - on-client-session -> on-client-session-start
+ * - on-frontend-tcp-request
+ * - on-frontend-http-request
+ * - on-backend-tcp-request
+ * - on-backend-http-request
+ * - on-server-session -> on-server-session-start
+ * - on-tcp-response
+ * - on-http-response
+ *
+ * FLT_OT_EVENT_NONE is used as an index for 'ot-scope' sections that do not
+ * have an event defined. The 'ot-scope' sections thus defined can be used
+ * within the 'ot-group' section.
+ *
+ * A description of the macro arguments can be found in the structure
+ * flt_ot_event_data definition
+ */
+#define FLT_OT_EVENT_DEFINES \
+ FLT_OT_EVENT_DEF( NONE, REQ, , , 0, "") \
+ FLT_OT_EVENT_DEF( CLIENT_SESS_START, REQ, CON_ACC, , 1, "on-client-session-start") \
+ FLT_OT_EVENT_DEF( INSPECT_FE, REQ, REQ_CNT, , 1, "on-frontend-tcp-request") \
+ FLT_OT_EVENT_DEF( WAIT_HTTP, REQ, , , 1, "on-http-wait-request") \
+ FLT_OT_EVENT_DEF( HTTP_BODY, REQ, , , 1, "on-http-body-request") \
+ FLT_OT_EVENT_DEF( HTTP_PROCESS_FE, REQ, HRQ_HDR, , 1, "on-frontend-http-request") \
+ FLT_OT_EVENT_DEF( SWITCHING_RULES, REQ, , , 1, "on-switching-rules-request") \
+ FLT_OT_EVENT_DEF( INSPECT_BE, REQ, REQ_CNT, REQ_CNT, 1, "on-backend-tcp-request") \
+ FLT_OT_EVENT_DEF( HTTP_PROCESS_BE, REQ, HRQ_HDR, HRQ_HDR, 1, "on-backend-http-request") \
+/* FLT_OT_EVENT_DEF( HTTP_TARPIT, REQ, , , 1, "on-http-tarpit-request") */ \
+ FLT_OT_EVENT_DEF( SRV_RULES, REQ, , , 1, "on-process-server-rules-request") \
+ FLT_OT_EVENT_DEF( HTTP_INNER, REQ, , , 1, "on-http-process-request") \
+ FLT_OT_EVENT_DEF( PRST_RDP_COOKIE, REQ, , , 1, "on-tcp-rdp-cookie-request") \
+ FLT_OT_EVENT_DEF( STICKING_RULES, REQ, , , 1, "on-process-sticking-rules-request") \
+ FLT_OT_EVENT_DEF( CLIENT_SESS_END, REQ, , , 0, "on-client-session-end") \
+ FLT_OT_EVENT_DEF(SERVER_UNAVAILABLE, REQ, , , 0, "on-server-unavailable") \
+ \
+ FLT_OT_EVENT_DEF( SERVER_SESS_START, RES, , SRV_CON, 0, "on-server-session-start") \
+ FLT_OT_EVENT_DEF( INSPECT, RES, RES_CNT, RES_CNT, 0, "on-tcp-response") \
+ FLT_OT_EVENT_DEF( WAIT_HTTP, RES, , , 1, "on-http-wait-response") \
+ FLT_OT_EVENT_DEF( STORE_RULES, RES, , , 1, "on-process-store-rules-response") \
+ FLT_OT_EVENT_DEF( HTTP_PROCESS_BE, RES, HRS_HDR, HRS_HDR, 1, "on-http-response") \
+ FLT_OT_EVENT_DEF( SERVER_SESS_END, RES, , , 0, "on-server-session-end")
+
+enum FLT_OT_EVENT_enum {
+#define FLT_OT_EVENT_DEF(a,b,c,d,e,f) FLT_OT_EVENT_##b##_##a,
+ FLT_OT_EVENT_DEFINES
+ FLT_OT_EVENT_MAX
+#undef FLT_OT_EVENT_DEF
+};
+
+enum FLT_OT_EVENT_SAMPLE_enum {
+ FLT_OT_EVENT_SAMPLE_TAG = 0,
+ FLT_OT_EVENT_SAMPLE_LOG,
+ FLT_OT_EVENT_SAMPLE_BAGGAGE,
+};
+
+struct flt_ot_event_data {
+ uint an_bit; /* Used channel analyser. */
+ uint smp_opt_dir; /* Fetch direction (request/response). */
+ uint smp_val_fe; /* Valid FE fetch location. */
+ uint smp_val_be; /* Valid BE fetch location. */
+ bool flag_http_inject; /* Span context injection allowed. */
+ const char *name; /* Filter event name. */
+};
+
+struct flt_ot_conf_scope;
+
+
+extern const struct flt_ot_event_data flt_ot_event_data[FLT_OT_EVENT_MAX];
+
+
+int flt_ot_scope_run(struct stream *s, struct filter *f, struct channel *chn, struct flt_ot_conf_scope *conf_scope, const struct timespec *ts, uint dir, char **err);
+int flt_ot_event_run(struct stream *s, struct filter *f, struct channel *chn, int event, char **err);
+
+#endif /* _OPENTRACING_EVENT_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/filter.h b/addons/ot/include/filter.h
new file mode 100644
index 0000000..c97a0cc
--- /dev/null
+++ b/addons/ot/include/filter.h
@@ -0,0 +1,68 @@
+/***
+ * 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_FILTER_H_
+#define _OPENTRACING_FILTER_H_
+
+#define FLT_OT_FMT_NAME "'" FLT_OT_OPT_NAME "' : "
+#define FLT_OT_FMT_TYPE "'filter' : "
+#define FLT_OT_VAR_UUID "sess", "ot", "uuid"
+#define FLT_OT_ALERT(f, ...) ha_alert(FLT_OT_FMT_TYPE FLT_OT_FMT_NAME f "\n", ##__VA_ARGS__)
+
+#define FLT_OT_CONDITION_IF "if"
+#define FLT_OT_CONDITION_UNLESS "unless"
+
+enum FLT_OT_RET_enum {
+ FLT_OT_RET_ERROR = -1,
+ FLT_OT_RET_WAIT = 0,
+ FLT_OT_RET_IGNORE = 0,
+ FLT_OT_RET_OK = 1,
+};
+
+#define FLT_OT_DBG_LIST(d,m,p,t,v,f) \
+ do { \
+ if (LIST_ISEMPTY(&((d)->m##s))) { \
+ FLT_OT_DBG(3, p "- no " #m "s " t); \
+ } else { \
+ const struct flt_ot_conf_##m *v; \
+ \
+ FLT_OT_DBG(3, p "- " t " " #m "s: %s", \
+ flt_ot_list_debug(&((d)->m##s))); \
+ list_for_each_entry(v, &((d)->m##s), list) \
+ do { f; } while (0); \
+ } \
+ } while (0)
+
+
+extern const char *ot_flt_id;
+extern struct flt_ops flt_ot_ops;
+
+
+bool flt_ot_is_disabled(const struct filter *f FLT_OT_DBG_ARGS(, int event));
+
+#endif /* _OPENTRACING_FILTER_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/group.h b/addons/ot/include/group.h
new file mode 100644
index 0000000..a9bfcc6
--- /dev/null
+++ b/addons/ot/include/group.h
@@ -0,0 +1,61 @@
+/***
+ * 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_GROUP_H_
+#define _OPENTRACING_GROUP_H_
+
+#define FLT_OT_ACTION_GROUP "ot-group"
+
+enum FLT_OT_ARG_enum {
+ FLT_OT_ARG_FILTER_ID = 0,
+ FLT_OT_ARG_GROUP_ID,
+
+ FLT_OT_ARG_FLT_CONF = 0,
+ FLT_OT_ARG_CONF,
+ FLT_OT_ARG_GROUP,
+};
+
+/*
+ * A description of the macro arguments can be found in the structure
+ * flt_ot_group_data definition
+ */
+#define FLT_OT_GROUP_DEFINES \
+ FLT_OT_GROUP_DEF(ACT_F_TCP_REQ_CON, SMP_VAL_FE_CON_ACC, SMP_OPT_DIR_REQ) \
+ FLT_OT_GROUP_DEF(ACT_F_TCP_REQ_SES, SMP_VAL_FE_SES_ACC, SMP_OPT_DIR_REQ) \
+ FLT_OT_GROUP_DEF(ACT_F_TCP_REQ_CNT, SMP_VAL_FE_REQ_CNT, SMP_OPT_DIR_REQ) \
+ FLT_OT_GROUP_DEF(ACT_F_TCP_RES_CNT, SMP_VAL_BE_RES_CNT, SMP_OPT_DIR_RES) \
+ FLT_OT_GROUP_DEF(ACT_F_HTTP_REQ, SMP_VAL_FE_HRQ_HDR, SMP_OPT_DIR_REQ) \
+ FLT_OT_GROUP_DEF(ACT_F_HTTP_RES, SMP_VAL_BE_HRS_HDR, SMP_OPT_DIR_RES)
+
+struct flt_ot_group_data {
+ enum act_from act_from; /* ACT_F_* */
+ uint smp_val; /* Valid FE/BE fetch location. */
+ uint smp_opt_dir; /* Fetch direction (request/response). */
+};
+
+#endif /* _OPENTRACING_GROUP_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/http.h b/addons/ot/include/http.h
new file mode 100644
index 0000000..c323cde
--- /dev/null
+++ b/addons/ot/include/http.h
@@ -0,0 +1,41 @@
+/***
+ * 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_HTTP_H_
+#define _OPENTRACING_HTTP_H_
+
+#ifndef DEBUG_OT
+# define flt_ot_http_headers_dump(...) while (0)
+#else
+void flt_ot_http_headers_dump(const struct channel *chn);
+#endif
+struct otc_text_map *flt_ot_http_headers_get(struct channel *chn, const char *prefix, size_t len, char **err);
+int flt_ot_http_header_set(struct channel *chn, const char *prefix, const char *name, const char *value, char **err);
+int flt_ot_http_headers_remove(struct channel *chn, const char *prefix, char **err);
+
+#endif /* _OPENTRACING_HTTP_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/include.h b/addons/ot/include/include.h
new file mode 100644
index 0000000..f1a5672
--- /dev/null
+++ b/addons/ot/include/include.h
@@ -0,0 +1,66 @@
+/***
+ * 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_INCLUDE_H_
+#define _OPENTRACING_INCLUDE_H_
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include <haproxy/api.h>
+#include <haproxy/cfgparse.h>
+#include <haproxy/acl.h>
+#include <haproxy/cli.h>
+#include <haproxy/clock.h>
+#include <haproxy/filters.h>
+#include <haproxy/http_htx.h>
+#include <haproxy/http_rules.h>
+#include <haproxy/log.h>
+#include <haproxy/proxy.h>
+#include <haproxy/sample.h>
+#include <haproxy/tcp_rules.h>
+#include <haproxy/tools.h>
+#include <haproxy/vars.h>
+
+#include "config.h"
+#include "debug.h"
+#include "define.h"
+#include "cli.h"
+#include "event.h"
+#include "conf.h"
+#include "filter.h"
+#include "group.h"
+#include "http.h"
+#include "opentracing.h"
+#include "parser.h"
+#include "pool.h"
+#include "scope.h"
+#include "util.h"
+#include "vars.h"
+
+#endif /* _OPENTRACING_INCLUDE_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/opentracing.h b/addons/ot/include/opentracing.h
new file mode 100644
index 0000000..2b88a33
--- /dev/null
+++ b/addons/ot/include/opentracing.h
@@ -0,0 +1,86 @@
+/***
+ * 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_OT_H_
+#define _OPENTRACING_OT_H_
+
+#include <opentracing-c-wrapper/include.h>
+
+
+#define FLT_OT_VSET(p,t,v) \
+ do { (p)->type = otc_value_##t; (p)->value.t##_value = (v); } while (0)
+
+#define FLT_OT_DBG_TEXT_MAP(a) \
+ FLT_OT_DBG(3, "%p:{ %p %p %zu/%zu %hhu }", \
+ (a), (a)->key, (a)->value, (a)->count, (a)->size, (a)->is_dynamic)
+
+#define FLT_OT_DBG_TEXT_CARRIER(a,f) \
+ FLT_OT_DBG(3, "%p:{ { %p %p %zu/%zu %hhu } %p }", \
+ (a), (a)->text_map.key, (a)->text_map.value, (a)->text_map.count, \
+ (a)->text_map.size, (a)->text_map.is_dynamic, (a)->f)
+
+#define FLT_OT_DBG_CUSTOM_CARRIER(a,f) \
+ FLT_OT_DBG(3, "%p:{ { %p %zu %hhu } %p }", \
+ (a), (a)->binary_data.data, (a)->binary_data.size, \
+ (a)->binary_data.is_dynamic, (a)->f)
+
+#define FLT_OT_DBG_SPAN_CONTEXT(a) \
+ FLT_OT_DBG(3, "%p:{ %" PRId64 " %p %p }", (a), (a)->idx, (a)->span, (a)->destroy)
+
+
+#ifndef DEBUG_OT
+# define ot_debug() while (0)
+# define ot_text_map_show(...) while (0)
+#else
+void ot_text_map_show(const struct otc_text_map *text_map);
+void ot_debug(void);
+#endif
+int ot_init(struct otc_tracer **tracer, const char *plugin, char **err);
+int ot_start(struct otc_tracer *tracer, const char *cfgbuf, char **err);
+struct otc_span *ot_span_init(struct otc_tracer *tracer, const char *operation_name, const struct timespec *ts_steady, const struct timespec *ts_system, int ref_type, int ref_ctx_idx, const struct otc_span *ref_span, const struct otc_tag *tags, int num_tags, char **err);
+int ot_span_tag(struct otc_span *span, const struct otc_tag *tags, int num_tags);
+int ot_span_log(struct otc_span *span, const struct otc_log_field *log_fields, int num_fields);
+int ot_span_set_baggage(struct otc_span *span, const struct otc_text_map *baggage);
+struct otc_span_context *ot_inject_http_headers(struct otc_tracer *tracer, const struct otc_span *span, struct otc_http_headers_writer *carrier, char **err);
+struct otc_span_context *ot_extract_http_headers(struct otc_tracer *tracer, struct otc_http_headers_reader *carrier, const struct otc_text_map *text_map, char **err);
+void ot_span_finish(struct otc_span **span, const struct timespec *ts_finish, const struct timespec *log_ts, const char *log_key, const char *log_value, ...);
+void ot_close(struct otc_tracer **tracer);
+
+/* Unused code. */
+struct otc_span *ot_span_init_va(struct otc_tracer *tracer, const char *operation_name, const struct timespec *ts_steady, const struct timespec *ts_system, int ref_type, int ref_ctx_idx, const struct otc_span *ref_span, char **err, const char *tag_key, const char *tag_value, ...);
+int ot_span_tag_va(struct otc_span *span, const char *key, int type, ...);
+int ot_span_log_va(struct otc_span *span, const char *key, const char *value, ...);
+int ot_span_log_fmt(struct otc_span *span, const char *key, const char *format, ...) __attribute__ ((format(printf, 3, 4)));
+int ot_span_set_baggage_va(struct otc_span *span, const char *key, const char *value, ...);
+struct otc_text_map *ot_span_baggage_va(const struct otc_span *span, const char *key, ...);
+struct otc_span_context *ot_inject_text_map(struct otc_tracer *tracer, const struct otc_span *span, struct otc_text_map_writer *carrier);
+struct otc_span_context *ot_inject_binary(struct otc_tracer *tracer, const struct otc_span *span, struct otc_custom_carrier_writer *carrier);
+struct otc_span_context *ot_extract_text_map(struct otc_tracer *tracer, struct otc_text_map_reader *carrier, const struct otc_text_map *text_map);
+struct otc_span_context *ot_extract_binary(struct otc_tracer *tracer, struct otc_custom_carrier_reader *carrier, const struct otc_binary_data *binary_data);
+
+#endif /* _OPENTRACING_OT_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/parser.h b/addons/ot/include/parser.h
new file mode 100644
index 0000000..53e414b
--- /dev/null
+++ b/addons/ot/include/parser.h
@@ -0,0 +1,172 @@
+/***
+ * 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_PARSER_H_
+#define _OPENTRACING_PARSER_H_
+
+#define FLT_OT_SCOPE "OT"
+
+/*
+ * filter FLT_OT_OPT_NAME FLT_OT_OPT_FILTER_ID <FLT_OT_OPT_FILTER_ID_DEFAULT> FLT_OT_OPT_CONFIG <file>
+ */
+#define FLT_OT_OPT_NAME "opentracing"
+#define FLT_OT_OPT_FILTER_ID "id"
+#define FLT_OT_OPT_FILTER_ID_DEFAULT "ot-filter"
+#define FLT_OT_OPT_CONFIG "config"
+
+#define FLT_OT_PARSE_SECTION_TRACER_ID "ot-tracer"
+#define FLT_OT_PARSE_SECTION_GROUP_ID "ot-group"
+#define FLT_OT_PARSE_SECTION_SCOPE_ID "ot-scope"
+
+#define FLT_OT_PARSE_SPAN_ROOT "root"
+#define FLT_OT_PARSE_SPAN_REF_CHILD "child-of"
+#define FLT_OT_PARSE_SPAN_REF_FOLLOWS "follows-from"
+#define FLT_OT_PARSE_CTX_AUTONAME "-"
+#define FLT_OT_PARSE_CTX_IGNORE_NAME '-'
+#define FLT_OT_PARSE_CTX_USE_HEADERS "use-headers"
+#define FLT_OT_PARSE_CTX_USE_VARS "use-vars"
+#define FLT_OT_PARSE_OPTION_HARDERR "hard-errors"
+#define FLT_OT_PARSE_OPTION_DISABLED "disabled"
+#define FLT_OT_PARSE_OPTION_NOLOGNORM "dontlog-normal"
+
+/*
+ * A description of the macro arguments can be found in the structure
+ * flt_ot_parse_data definition
+ */
+#define FLT_OT_PARSE_TRACER_DEFINES \
+ FLT_OT_PARSE_TRACER_DEF( ID, 0, CHAR, 2, 2, "ot-tracer", " <name>") \
+ FLT_OT_PARSE_TRACER_DEF( ACL, 0, CHAR, 3, 0, "acl", " <name> <criterion> [flags] [operator] <value> ...") \
+ FLT_OT_PARSE_TRACER_DEF( LOG, 0, CHAR, 2, 0, "log", " { global | <addr> [len <len>] [format <fmt>] <facility> [<level> [<minlevel>]] }") \
+ FLT_OT_PARSE_TRACER_DEF( CONFIG, 0, NONE, 2, 2, "config", " <file>") \
+ FLT_OT_PARSE_TRACER_DEF( PLUGIN, 0, NONE, 2, 2, "plugin", " <file>") \
+ FLT_OT_PARSE_TRACER_DEF( GROUPS, 0, NONE, 2, 0, "groups", " <name> ...") \
+ FLT_OT_PARSE_TRACER_DEF( SCOPES, 0, NONE, 2, 0, "scopes", " <name> ...") \
+ FLT_OT_PARSE_TRACER_DEF( RATE_LIMIT, 0, NONE, 2, 2, "rate-limit", " <value>") \
+ FLT_OT_PARSE_TRACER_DEF( OPTION, 0, NONE, 2, 2, "option", " { disabled | dontlog-normal | hard-errors }") \
+ FLT_OT_PARSE_TRACER_DEF(DEBUG_LEVEL, 0, NONE, 2, 2, "debug-level", " <value>")
+
+#define FLT_OT_PARSE_GROUP_DEFINES \
+ FLT_OT_PARSE_GROUP_DEF( ID, 0, CHAR, 2, 2, "ot-group", " <name>") \
+ FLT_OT_PARSE_GROUP_DEF(SCOPES, 0, NONE, 2, 0, "scopes", " <name> ...")
+
+#ifdef USE_OT_VARS
+# define FLT_OT_PARSE_SCOPE_INJECT_HELP " <name-prefix> [use-vars] [use-headers]"
+# define FLT_OT_PARSE_SCOPE_EXTRACT_HELP " <name-prefix> [use-vars | use-headers]"
+#else
+# define FLT_OT_PARSE_SCOPE_INJECT_HELP " <name-prefix> [use-headers]"
+# define FLT_OT_PARSE_SCOPE_EXTRACT_HELP " <name-prefix> [use-headers]"
+#endif
+
+/*
+ * In case the possibility of working with OpenTracing context via HAProxyu
+ * variables is not used, args_max member of the structure flt_ot_parse_data
+ * should be reduced for 'inject' keyword. However, this is not critical
+ * because in this case the 'use-vars' argument cannot be entered anyway,
+ * so I will not complicate it here with additional definitions.
+ */
+#define FLT_OT_PARSE_SCOPE_DEFINES \
+ FLT_OT_PARSE_SCOPE_DEF( ID, 0, CHAR, 2, 2, "ot-scope", " <name>") \
+ FLT_OT_PARSE_SCOPE_DEF( SPAN, 0, NONE, 2, 5, "span", " <name> [<reference>] [root]") \
+ FLT_OT_PARSE_SCOPE_DEF( TAG, 1, NONE, 3, 0, "tag", " <name> <sample> ...") \
+ FLT_OT_PARSE_SCOPE_DEF( LOG, 1, NONE, 3, 0, "log", " <name> <sample> ...") \
+ FLT_OT_PARSE_SCOPE_DEF(BAGGAGE, 1, VAR, 3, 0, "baggage", " <name> <sample> ...") \
+ FLT_OT_PARSE_SCOPE_DEF( INJECT, 1, CTX, 2, 4, "inject", FLT_OT_PARSE_SCOPE_INJECT_HELP) \
+ FLT_OT_PARSE_SCOPE_DEF(EXTRACT, 0, CTX, 2, 3, "extract", FLT_OT_PARSE_SCOPE_EXTRACT_HELP) \
+ FLT_OT_PARSE_SCOPE_DEF( FINISH, 0, NONE, 2, 0, "finish", " <name> ...") \
+ FLT_OT_PARSE_SCOPE_DEF( ACL, 0, CHAR, 3, 0, "acl", " <name> <criterion> [flags] [operator] <value> ...") \
+ FLT_OT_PARSE_SCOPE_DEF( EVENT, 0, NONE, 2, 0, "event", " <name> [{ if | unless } <condition>]")
+
+enum FLT_OT_PARSE_INVCHAR_enum {
+ FLT_OT_PARSE_INVALID_NONE,
+ FLT_OT_PARSE_INVALID_CHAR,
+ FLT_OT_PARSE_INVALID_DOM,
+ FLT_OT_PARSE_INVALID_CTX,
+ FLT_OT_PARSE_INVALID_VAR,
+};
+
+enum FLT_OT_PARSE_TRACER_enum {
+#define FLT_OT_PARSE_TRACER_DEF(a,b,c,d,e,f,g) FLT_OT_PARSE_TRACER_##a,
+ FLT_OT_PARSE_TRACER_DEFINES
+#undef FLT_OT_PARSE_TRACER_DEF
+};
+
+enum FLT_OT_PARSE_GROUP_enum {
+#define FLT_OT_PARSE_GROUP_DEF(a,b,c,d,e,f,g) FLT_OT_PARSE_GROUP_##a,
+ FLT_OT_PARSE_GROUP_DEFINES
+#undef FLT_OT_PARSE_GROUP_DEF
+};
+
+enum FLT_OT_PARSE_SCOPE_enum {
+#define FLT_OT_PARSE_SCOPE_DEF(a,b,c,d,e,f,g) FLT_OT_PARSE_SCOPE_##a,
+ FLT_OT_PARSE_SCOPE_DEFINES
+#undef FLT_OT_PARSE_SCOPE_DEF
+};
+
+enum FLT_OT_CTX_USE_enum {
+ FLT_OT_CTX_USE_VARS = 1 << 0,
+ FLT_OT_CTX_USE_HEADERS = 1 << 1,
+};
+
+struct flt_ot_parse_data {
+ int keyword; /* Keyword index. */
+ bool flag_check_id; /* Whether the group ID must be defined for the keyword. */
+ int check_name; /* Checking allowed characters in the name. */
+ int args_min; /* The minimum number of arguments required. */
+ int args_max; /* The maximum number of arguments allowed. */
+ const char *name; /* Keyword name. */
+ const char *usage; /* Usage text to be printed in case of an error. */
+};
+
+#define FLT_OT_PARSE_WARNING(f, ...) \
+ ha_warning("parsing [%s:%d] : " FLT_OT_FMT_TYPE FLT_OT_FMT_NAME "'" f "'\n", ##__VA_ARGS__);
+#define FLT_OT_PARSE_ALERT(f, ...) \
+ do { \
+ ha_alert("parsing [%s:%d] : " FLT_OT_FMT_TYPE FLT_OT_FMT_NAME "'" f "'\n", ##__VA_ARGS__); \
+ \
+ retval |= ERR_ABORT | ERR_ALERT; \
+ } while (0)
+#define FLT_OT_POST_PARSE_ALERT(f, ...) \
+ FLT_OT_PARSE_ALERT(f, flt_ot_current_config->cfg_file, ##__VA_ARGS__)
+
+#define FLT_OT_PARSE_ERR(e,f, ...) \
+ do { \
+ if (*(e) == NULL) \
+ (void)memprintf((e), f, ##__VA_ARGS__); \
+ \
+ retval |= ERR_ABORT | ERR_ALERT; \
+ } while (0)
+#define FLT_OT_PARSE_IFERR_ALERT() \
+ do { \
+ if (err == NULL) \
+ break; \
+ \
+ FLT_OT_PARSE_ALERT("%s", file, linenum, err); \
+ FLT_OT_ERR_FREE(err); \
+ } while (0)
+
+#endif /* _OPENTRACING_PARSER_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/pool.h b/addons/ot/include/pool.h
new file mode 100644
index 0000000..df72c84
--- /dev/null
+++ b/addons/ot/include/pool.h
@@ -0,0 +1,39 @@
+/***
+ * 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_POOL_H_
+#define _OPENTRACING_POOL_H_
+
+void *flt_ot_pool_alloc(struct pool_head *pool, size_t size, bool flag_clear, char **err);
+void *flt_ot_pool_strndup(struct pool_head *pool, const char *s, size_t size, char **err);
+void flt_ot_pool_free(struct pool_head *pool, void **ptr);
+
+struct buffer *flt_ot_trash_alloc(bool flag_clear, char **err);
+void flt_ot_trash_free(struct buffer **ptr);
+
+#endif /* _OPENTRACING_POOL_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/scope.h b/addons/ot/include/scope.h
new file mode 100644
index 0000000..7a3a776
--- /dev/null
+++ b/addons/ot/include/scope.h
@@ -0,0 +1,126 @@
+/***
+ * 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_SCOPE_H_
+#define _OPENTRACING_SCOPE_H_
+
+#define FLT_OT_SCOPE_SPAN_FINISH_REQ "*req*"
+#define FLT_OT_SCOPE_SPAN_FINISH_RES "*res*"
+#define FLT_OT_SCOPE_SPAN_FINISH_ALL "*"
+
+#define FLT_OT_RT_CTX(a) ((struct flt_ot_runtime_context *)(a))
+
+#define FLT_OT_DBG_SCOPE_SPAN(f,a) \
+ FLT_OT_DBG(3, "%s%p:{ '%s' %zu %u %hhu %p %d %p %p }", \
+ (f), (a), FLT_OT_STR_HDR_ARGS(a, id), (a)->smp_opt_dir, \
+ (a)->flag_finish, (a)->span, (a)->ref_type, (a)->ref_span, (a)->ref_ctx)
+
+#define FLT_OT_DBG_SCOPE_CONTEXT(f,a) \
+ FLT_OT_DBG(3, "%s%p:{ '%s' %zu %u %hhu %p }", \
+ (f), (a), FLT_OT_STR_HDR_ARGS(a, id), (a)->smp_opt_dir, \
+ (a)->flag_finish, (a)->context)
+
+#define FLT_OT_DBG_SCOPE_DATA(f,a) \
+ FLT_OT_DBG(3, "%s%p:{ %p %d %p %p %d }", \
+ (f), (a), (a)->tags, (a)->num_tags, (a)->baggage, (a)->log_fields, (a)->num_log_fields)
+
+#define FLT_OT_DBG_RUNTIME_CONTEXT(f,a) \
+ FLT_OT_DBG(3, "%s%p:{ %p %p '%s' %hhu %hhu 0x%02hhx 0x%08x %s %s }", \
+ (f), (a), (a)->stream, (a)->filter, (a)->uuid, (a)->flag_harderr, \
+ (a)->flag_disabled, (a)->logging, (a)->analyzers, flt_ot_list_debug(&((a)->spans)), \
+ flt_ot_list_debug(&((a)->contexts)))
+
+#define FLT_OT_CONST_STR_HDR(a) \
+ struct { \
+ const char *a; \
+ size_t a##_len; \
+ }
+
+
+struct flt_ot_scope_data {
+ struct otc_tag tags[FLT_OT_MAXTAGS]; /* Defined tags. */
+ int num_tags; /* The number of tags used. */
+ struct otc_text_map *baggage; /* Defined baggage. */
+ struct otc_log_field log_fields[OTC_MAXLOGFIELDS]; /* Defined logs. */
+ int num_log_fields; /* The number of log fields used. */
+};
+
+/* flt_ot_runtime_context->spans */
+struct flt_ot_scope_span {
+ FLT_OT_CONST_STR_HDR(id); /* The span operation name/len. */
+ uint smp_opt_dir; /* SMP_OPT_DIR_RE(Q|S) */
+ bool flag_finish; /* Whether the span is marked for completion. */
+ struct otc_span *span; /* The current span. */
+ otc_span_reference_type_t ref_type; /* Span reference type. */
+ struct otc_span *ref_span; /* Span to which the current span refers. */
+ struct otc_span_context *ref_ctx; /* Span context to which the current span refers. */
+ struct list list; /* Used to chain this structure. */
+};
+
+/* flt_ot_runtime_context->contexts */
+struct flt_ot_scope_context {
+ FLT_OT_CONST_STR_HDR(id); /* The span context name/len. */
+ uint smp_opt_dir; /* SMP_OPT_DIR_RE(Q|S) */
+ bool flag_finish; /* Whether the span context is marked for completion. */
+ struct otc_span_context *context; /* The current span context. */
+ struct list list; /* Used to chain this structure. */
+};
+
+/* The runtime filter context attached to a stream. */
+struct flt_ot_runtime_context {
+ struct stream *stream; /* The stream to which the filter is attached. */
+ struct filter *filter; /* The OpenTracing filter. */
+ char uuid[40]; /* Randomly generated UUID. */
+ bool flag_harderr; /* [0 1] */
+ bool flag_disabled; /* [0 1] */
+ uint8_t logging; /* [0 1 3] */
+ uint analyzers; /* Executed channel analyzers. */
+ struct list spans; /* The scope spans. */
+ struct list contexts; /* The scope contexts. */
+};
+
+
+#ifndef DEBUG_OT
+# define flt_ot_pools_info() while (0)
+#else
+void flt_ot_pools_info(void);
+#endif
+struct flt_ot_runtime_context *flt_ot_runtime_context_init(struct stream *s, struct filter *f, char **err);
+void flt_ot_runtime_context_free(struct filter *f);
+
+struct flt_ot_scope_span *flt_ot_scope_span_init(struct flt_ot_runtime_context *rt_ctx, const char *id, size_t id_len, otc_span_reference_type_t ref_type, const char *ref_id, size_t ref_id_len, uint dir, char **err);
+void flt_ot_scope_span_free(struct flt_ot_scope_span **ptr);
+struct flt_ot_scope_context *flt_ot_scope_context_init(struct flt_ot_runtime_context *rt_ctx, struct otc_tracer *tracer, const char *id, size_t id_len, const struct otc_text_map *text_map, uint dir, char **err);
+void flt_ot_scope_context_free(struct flt_ot_scope_context **ptr);
+void flt_ot_scope_data_free(struct flt_ot_scope_data *ptr);
+
+int flt_ot_scope_finish_mark(const struct flt_ot_runtime_context *rt_ctx, const char *id, size_t id_len);
+void flt_ot_scope_finish_marked(const struct flt_ot_runtime_context *rt_ctx, const struct timespec *ts_finish);
+void flt_ot_scope_free_unused(struct flt_ot_runtime_context *rt_ctx, struct channel *chn);
+
+#endif /* _OPENTRACING_SCOPE_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/util.h b/addons/ot/include/util.h
new file mode 100644
index 0000000..776ddd2
--- /dev/null
+++ b/addons/ot/include/util.h
@@ -0,0 +1,109 @@
+/***
+ * 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_UTIL_H_
+#define _OPENTRACING_UTIL_H_
+
+#define HTTP_METH_STR_OPTIONS "OPTIONS"
+#define HTTP_METH_STR_GET "GET"
+#define HTTP_METH_STR_HEAD "HEAD"
+#define HTTP_METH_STR_POST "POST"
+#define HTTP_METH_STR_PUT "PUT"
+#define HTTP_METH_STR_DELETE "DELETE"
+#define HTTP_METH_STR_TRACE "TRACE"
+#define HTTP_METH_STR_CONNECT "CONNECT"
+
+/* Defined in include/haproxy/channel-t.h. */
+#define FLT_OT_AN_DEFINES \
+ FLT_OT_AN_DEF(AN_REQ_INSPECT_FE) \
+ FLT_OT_AN_DEF(AN_REQ_WAIT_HTTP) \
+ FLT_OT_AN_DEF(AN_REQ_HTTP_BODY) \
+ FLT_OT_AN_DEF(AN_REQ_HTTP_PROCESS_FE) \
+ FLT_OT_AN_DEF(AN_REQ_SWITCHING_RULES) \
+ FLT_OT_AN_DEF(AN_REQ_INSPECT_BE) \
+ FLT_OT_AN_DEF(AN_REQ_HTTP_PROCESS_BE) \
+ FLT_OT_AN_DEF(AN_REQ_HTTP_TARPIT) \
+ FLT_OT_AN_DEF(AN_REQ_SRV_RULES) \
+ FLT_OT_AN_DEF(AN_REQ_HTTP_INNER) \
+ FLT_OT_AN_DEF(AN_REQ_PRST_RDP_COOKIE) \
+ FLT_OT_AN_DEF(AN_REQ_STICKING_RULES) \
+ FLT_OT_AN_DEF(AN_REQ_HTTP_XFER_BODY) \
+ FLT_OT_AN_DEF(AN_REQ_WAIT_CLI) \
+ FLT_OT_AN_DEF(AN_RES_INSPECT) \
+ FLT_OT_AN_DEF(AN_RES_WAIT_HTTP) \
+ FLT_OT_AN_DEF(AN_RES_STORE_RULES) \
+ FLT_OT_AN_DEF(AN_RES_HTTP_PROCESS_BE) \
+ FLT_OT_AN_DEF(AN_RES_HTTP_PROCESS_FE) \
+ FLT_OT_AN_DEF(AN_RES_HTTP_XFER_BODY) \
+ FLT_OT_AN_DEF(AN_RES_WAIT_CLI)
+
+#define FLT_OT_PROXIES_LIST_START() \
+ do { \
+ struct flt_conf *fconf; \
+ struct proxy *px; \
+ \
+ for (px = proxies_list; px != NULL; px = px->next) \
+ list_for_each_entry(fconf, &(px->filter_configs), list) \
+ if (fconf->id == ot_flt_id) { \
+ struct flt_ot_conf *conf = fconf->conf;
+#define FLT_OT_PROXIES_LIST_END() \
+ } \
+ } while (0)
+
+#ifdef DEBUG_OT
+# define FLT_OT_ARGS_DUMP() do { if (flt_ot_debug.level & (1 << 2)) flt_ot_args_dump(args); } while (0)
+#else
+# define FLT_OT_ARGS_DUMP() while (0)
+#endif
+
+
+#ifndef DEBUG_OT
+# define flt_ot_filters_dump() while (0)
+#else
+void flt_ot_args_dump(char **args);
+void flt_ot_filters_dump(void);
+const char *flt_ot_chn_label(const struct channel *chn);
+const char *flt_ot_pr_mode(const struct stream *s);
+const char *flt_ot_stream_pos(const struct stream *s);
+const char *flt_ot_type(const struct filter *f);
+const char *flt_ot_analyzer(uint an_bit);
+const char *flt_ot_str_hex(const void *data, size_t size);
+const char *flt_ot_str_ctrl(const void *data, size_t size);
+const char *flt_ot_list_debug(const struct list *head);
+#endif
+
+ssize_t flt_ot_chunk_add(struct buffer *chk, const void *src, size_t n, char **err);
+int flt_ot_args_count(char **args);
+void flt_ot_args_to_str(char **args, int idx, char **str);
+double flt_ot_strtod(const char *nptr, double limit_min, double limit_max, char **err);
+int64_t flt_ot_strtoll(const char *nptr, int64_t limit_min, int64_t limit_max, char **err);
+int flt_ot_sample_to_str(const struct sample_data *data, char *value, size_t size, char **err);
+int flt_ot_sample_to_value(const char *key, const struct sample_data *data, struct otc_value *value, char **err);
+int flt_ot_sample_add(struct stream *s, uint dir, struct flt_ot_conf_sample *sample, struct flt_ot_scope_data *data, int type, char **err);
+
+#endif /* _OPENTRACING_UTIL_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
diff --git a/addons/ot/include/vars.h b/addons/ot/include/vars.h
new file mode 100644
index 0000000..550cc89
--- /dev/null
+++ b/addons/ot/include/vars.h
@@ -0,0 +1,55 @@
+/***
+ * 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_VARS_H_
+#define _OPENTRACING_VARS_H_
+
+#define FLT_OT_VARS_SCOPE "txn"
+#define FLT_OT_VAR_CTX_SIZE int8_t
+#define FLT_OT_VAR_CHAR_DASH 'D'
+#define FLT_OT_VAR_CHAR_SPACE 'S'
+
+struct flt_ot_ctx {
+ char value[BUFSIZ];
+ int value_len;
+};
+
+typedef int (*flt_ot_ctx_loop_cb)(struct sample *, size_t, const char *, const char *, const char *, FLT_OT_VAR_CTX_SIZE, char **, void *);
+
+
+#ifndef DEBUG_OT
+# define flt_ot_vars_dump(...) while (0)
+#else
+void flt_ot_vars_dump(struct stream *s);
+#endif
+int flt_ot_var_register(const char *scope, const char *prefix, const char *name, char **err);
+int flt_ot_var_set(struct stream *s, const char *scope, const char *prefix, const char *name, const char *value, uint opt, char **err);
+int flt_ot_vars_unset(struct stream *s, const char *scope, const char *prefix, uint opt, char **err);
+struct otc_text_map *flt_ot_vars_get(struct stream *s, const char *scope, const char *prefix, uint opt, char **err);
+
+#endif /* _OPENTRACING_VARS_H_ */
+
+/*
+ * Local variables:
+ * c-indent-level: 8
+ * c-basic-offset: 8
+ * End:
+ *
+ * vi: noexpandtab shiftwidth=8 tabstop=8
+ */
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