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MINOR: applet: Save the "use-service" rule in the stream to init a service applet

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When a service is initialized, the "use-service" rule that was executed is
now saved in the stream, using "current_rule" field, instead of saving it
into the applet context. It is safe to do so becaues this field is unused at
this stage. To avoid any issue, it is reset after the service
initialization. Doing so, it is no longer necessary to save it in the applet
context. It was the last usage of the rule pointer in the applet context.

The init functions for TCP and HTTP lua services were updated accordingly.
This commit is contained in:
Christopher Faulet 2025-04-24 16:08:48 +02:00
parent 6f59986e7c
commit 568ed6484a
2 changed files with 10 additions and 7 deletions
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14
src/hlua.c
View File

@ -10925,6 +10925,7 @@ static int hlua_applet_tcp_init(struct appctx *ctx)
struct hlua_tcp_ctx *tcp_ctx = applet_reserve_svcctx(ctx, sizeof(*tcp_ctx));
struct stconn *sc = appctx_sc(ctx);
struct stream *strm = __sc_strm(sc);
struct act_rule *rule = strm->current_rule;
struct hlua *hlua;
struct task *task;
char **arg;
@ -10957,7 +10958,7 @@ static int hlua_applet_tcp_init(struct appctx *ctx)
* permits to save performances because a systematic
* Lua initialization cause 5% performances loss.
*/
if (!hlua_ctx_init(hlua, fcn_ref_to_stack_id(ctx->rule->arg.hlua_rule->fcn), task)) {
if (!hlua_ctx_init(hlua, fcn_ref_to_stack_id(rule->arg.hlua_rule->fcn), task)) {
SEND_ERR(strm->be, "Lua applet tcp '%s': can't initialize Lua context.\n",
ctx->applet->name);
return -1;
@ -10988,7 +10989,7 @@ static int hlua_applet_tcp_init(struct appctx *ctx)
}
/* Restore the function in the stack. */
hlua_pushref(hlua->T, ctx->rule->arg.hlua_rule->fcn->function_ref[hlua->state_id]);
hlua_pushref(hlua->T, rule->arg.hlua_rule->fcn->function_ref[hlua->state_id]);
/* Create and and push object stream in the stack. */
if (!hlua_applet_tcp_new(hlua->T, ctx)) {
@ -11000,7 +11001,7 @@ static int hlua_applet_tcp_init(struct appctx *ctx)
hlua->nargs = 1;
/* push keywords in the stack. */
for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
for (arg = rule->arg.hlua_rule->args; arg && *arg; arg++) {
if (!lua_checkstack(hlua->T, 1)) {
SEND_ERR(strm->be, "Lua applet tcp '%s': full stack.\n",
ctx->applet->name);
@ -11128,6 +11129,7 @@ static int hlua_applet_http_init(struct appctx *ctx)
struct hlua_http_ctx *http_ctx = applet_reserve_svcctx(ctx, sizeof(*http_ctx));
struct stconn *sc = appctx_sc(ctx);
struct stream *strm = __sc_strm(sc);
struct act_rule *rule = strm->current_rule;
struct http_txn *txn;
struct hlua *hlua;
char **arg;
@ -11166,7 +11168,7 @@ static int hlua_applet_http_init(struct appctx *ctx)
* permits to save performances because a systematic
* Lua initialization cause 5% performances loss.
*/
if (!hlua_ctx_init(hlua, fcn_ref_to_stack_id(ctx->rule->arg.hlua_rule->fcn), task)) {
if (!hlua_ctx_init(hlua, fcn_ref_to_stack_id(rule->arg.hlua_rule->fcn), task)) {
SEND_ERR(strm->be, "Lua applet http '%s': can't initialize Lua context.\n",
ctx->applet->name);
return -1;
@ -11197,7 +11199,7 @@ static int hlua_applet_http_init(struct appctx *ctx)
}
/* Restore the function in the stack. */
hlua_pushref(hlua->T, ctx->rule->arg.hlua_rule->fcn->function_ref[hlua->state_id]);
hlua_pushref(hlua->T, rule->arg.hlua_rule->fcn->function_ref[hlua->state_id]);
/* Create and and push object stream in the stack. */
if (!hlua_applet_http_new(hlua->T, ctx)) {
@ -11209,7 +11211,7 @@ static int hlua_applet_http_init(struct appctx *ctx)
hlua->nargs = 1;
/* push keywords in the stack. */
for (arg = ctx->rule->arg.hlua_rule->args; arg && *arg; arg++) {
for (arg = rule->arg.hlua_rule->args; arg && *arg; arg++) {
if (!lua_checkstack(hlua->T, 1)) {
SEND_ERR(strm->be, "Lua applet http '%s': full stack.\n",
ctx->applet->name);

3
src/stream.c
View File

@ -1051,9 +1051,10 @@ enum act_return process_use_service(struct act_rule *rule, struct proxy *px,
return ACT_RET_ERR;
/* Finish initialisation of the context. */
appctx->rule = rule;
s->current_rule = rule;
if (appctx_init(appctx) == -1)
return ACT_RET_ERR;
s->current_rule = NULL;
}
else
appctx = __sc_appctx(s->scb);