MINOR: applet: Add support for flags on applets with a flag about the new API

A new field was added in the applet structure to be able to set flags on the
applets The first one is related to the new API. APPLET_FL_NEW_API is set
for applets based on the new API. It was set on all HAProxy's applets.

addons/promex/service-prometheus.c

@@ -2144,6 +2144,7 @@ static void promex_appctx_handle_io(struct appctx *appctx)
 
 struct applet promex_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<PROMEX>", /* used for logging */
 	.init = promex_appctx_init,
 	.release = promex_appctx_release,

include/haproxy/applet-t.h

@@ -81,9 +81,12 @@ static forceinline char *appctx_show_flags(char *buf, size_t len, const char *de
 #undef _
 }
 
+#define APPLET_FL_NEW_API 0x00000001 /* Set if the applet is based on the new API (using applet's buffers) */
+
 /* Applet descriptor */
 struct applet {
 	enum obj_type obj_type;            /* object type = OBJ_TYPE_APPLET */
+	unsigned int flags;                /* APPLET_FL_* flags */
 	/* 3 unused bytes here */
 	char *name;                        /* applet's name to report in logs */
 	int (*init)(struct appctx *);      /* callback to init resources, may be NULL.

src/cache.c

@@ -3139,6 +3139,7 @@ INITCALL1(STG_REGISTER, http_req_keywords_register, &http_req_actions);
 
 struct applet http_cache_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<CACHE>", /* used for logging */
 	.fct = http_cache_io_handler,
 	.rcv_buf = appctx_htx_rcv_buf,

src/cli.c

@@ -3899,6 +3899,7 @@ int mworker_cli_global_proxy_new_listener(struct mworker_proc *proc)
 
 static struct applet cli_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<CLI>", /* used for logging */
 	.fct = cli_io_handler,
 	.rcv_buf = appctx_raw_rcv_buf,
@@ -3909,6 +3910,7 @@ static struct applet cli_applet = {
 /* master CLI */
 static struct applet mcli_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<MCLI>", /* used for logging */
 	.fct = cli_io_handler,
 	.rcv_buf = appctx_raw_rcv_buf,

src/dns.c

@@ -952,6 +952,7 @@ static void dns_session_release(struct appctx *appctx)
 /* DNS tcp session applet */
 static struct applet dns_session_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<STRMDNS>", /* used for logging */
 	.fct = dns_session_io_handler,
 	.rcv_buf = appctx_raw_rcv_buf,

src/flt_spoe.c

@@ -538,6 +538,7 @@ static void spoe_handle_appctx(struct appctx *appctx)
 
 struct applet spoe_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<SPOE>", /* used for logging */
 	.fct = spoe_handle_appctx,
 	.init = spoe_init_appctx,

src/hlua.c

@@ -3437,6 +3437,7 @@ static int hlua_socket_getsockname(struct lua_State *L)
 /* This struct define the applet. */
 static struct applet update_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<LUA_TCP>",
 	.fct = hlua_socket_handler,
 	.rcv_buf = appctx_raw_rcv_buf,
@@ -11610,6 +11611,7 @@ static enum act_parse_ret action_register_service_http(const char **args, int *c
 
 	/* Add applet pointer in the rule. */
 	rule->applet.obj_type = OBJ_TYPE_APPLET;
+	rule->applet.flags = APPLET_FL_NEW_API;
 	rule->applet.name = fcn->name;
 	rule->applet.init = hlua_applet_http_init;
 	rule->applet.rcv_buf = appctx_htx_rcv_buf;
@@ -11797,6 +11799,7 @@ static enum act_parse_ret action_register_service_tcp(const char **args, int *cu
 
 	/* Add applet pointer in the rule. */
 	rule->applet.obj_type = OBJ_TYPE_APPLET;
+	rule->applet.flags = APPLET_FL_NEW_API;
 	rule->applet.name = fcn->name;
 	rule->applet.init = hlua_applet_tcp_init;
 	rule->applet.rcv_buf = appctx_raw_rcv_buf;

src/http_client.c

@@ -1019,6 +1019,7 @@ void httpclient_applet_release(struct appctx *appctx)
 /* HTTP client applet */
 static struct applet httpclient_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<HTTPCLIENT>",
 	.fct = httpclient_applet_io_handler,
 	.rcv_buf = appctx_htx_rcv_buf,

src/log.c

@@ -5967,6 +5967,7 @@ static void syslog_io_handler(struct appctx *appctx)
 
 static struct applet syslog_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<SYSLOG>", /* used for logging */
 	.fct = syslog_io_handler,
 	.rcv_buf = appctx_raw_rcv_buf,

src/peers.c

@@ -3228,6 +3228,7 @@ static void peer_io_handler(struct appctx *appctx)
 
 static struct applet peer_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<PEER>", /* used for logging */
 	.fct = peer_io_handler,
 	.rcv_buf = appctx_raw_rcv_buf,

src/sink.c

@@ -600,6 +600,7 @@ static void sink_forward_session_release(struct appctx *appctx)
 
 static struct applet sink_forward_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<SINKFWD>", /* used for logging */
 	.fct = sink_forward_io_handler,
 	.rcv_buf = appctx_raw_rcv_buf,
@@ -610,6 +611,7 @@ static struct applet sink_forward_applet = {
 
 static struct applet sink_forward_oc_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<SINKFWDOC>", /* used for logging */
 	.fct = sink_forward_oc_io_handler,
 	.rcv_buf = appctx_raw_rcv_buf,

src/stats-html.c

@@ -2103,6 +2103,7 @@ static void http_stats_release(struct appctx *appctx)
 
 struct applet http_stats_applet = {
 	.obj_type = OBJ_TYPE_APPLET,
+	.flags = APPLET_FL_NEW_API,
 	.name = "<STATS>", /* used for logging */
 	.fct = http_stats_io_handler,
 	.rcv_buf = appctx_htx_rcv_buf,