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[njs] Stream: improved flags argument for s.on() callback methods.

Dmitry Volyntsev
August 10, 2022 11:10PM
details: https://hg.nginx.org/njs/rev/446a1cb64a6a
branches:
changeset: 1927:446a1cb64a6a
user: Dmitry Volyntsev <xeioex@nginx.com>
date: Wed Aug 10 20:04:40 2022 -0700
description:
Stream: improved flags argument for s.on() callback methods.

diffstat:

nginx/ngx_js.c | 25 +++++++++++++++++
nginx/ngx_js.h | 4 ++
nginx/ngx_stream_js_module.c | 64 +++++++++++++++++++++++++++++++------------
src/njs.h | 1 +
src/njs_extern.c | 2 +-
5 files changed, 77 insertions(+), 19 deletions(-)

diffs (182 lines):

diff -r 358e048185d8 -r 446a1cb64a6a nginx/ngx_js.c
--- a/nginx/ngx_js.c Wed Aug 10 20:03:54 2022 -0700
+++ b/nginx/ngx_js.c Wed Aug 10 20:04:40 2022 -0700
@@ -263,6 +263,31 @@ ngx_js_ext_constant(njs_vm_t *vm, njs_ob


njs_int_t
+ngx_js_ext_flags(njs_vm_t *vm, njs_object_prop_t *prop,
+ njs_value_t *value, njs_value_t *setval, njs_value_t *retval)
+{
+ uintptr_t data;
+
+ data = (uintptr_t) njs_vm_external(vm, NJS_PROTO_ID_ANY, value);
+ if (data == 0) {
+ njs_value_undefined_set(retval);
+ return NJS_DECLINED;
+ }
+
+ data = data & (uintptr_t) njs_vm_prop_magic32(prop);
+
+ switch (njs_vm_prop_magic16(prop)) {
+ case NGX_JS_BOOLEAN:
+ default:
+ njs_value_boolean_set(retval, data);
+ break;
+ }
+
+ return NJS_OK;
+}
+
+
+njs_int_t
ngx_js_ext_boolean(njs_vm_t *vm, njs_object_prop_t *prop,
njs_value_t *value, njs_value_t *setval, njs_value_t *retval)
{
diff -r 358e048185d8 -r 446a1cb64a6a nginx/ngx_js.h
--- a/nginx/ngx_js.h Wed Aug 10 20:03:54 2022 -0700
+++ b/nginx/ngx_js.h Wed Aug 10 20:04:40 2022 -0700
@@ -19,6 +19,8 @@
#define NGX_JS_DEPRECATED 1
#define NGX_JS_STRING 2
#define NGX_JS_BUFFER 4
+#define NGX_JS_BOOLEAN 8
+#define NGX_JS_NUMBER 16

#define ngx_js_buffer_type(btype) ((btype) & ~NGX_JS_DEPRECATED)

@@ -80,6 +82,8 @@ njs_int_t ngx_js_ext_uint(njs_vm_t *vm,
njs_value_t *value, njs_value_t *setval, njs_value_t *retval);
njs_int_t ngx_js_ext_constant(njs_vm_t *vm, njs_object_prop_t *prop,
njs_value_t *value, njs_value_t *setval, njs_value_t *retval);
+njs_int_t ngx_js_ext_flags(njs_vm_t *vm, njs_object_prop_t *prop,
+ njs_value_t *value, njs_value_t *setval, njs_value_t *retval);
njs_int_t ngx_js_ext_boolean(njs_vm_t *vm, njs_object_prop_t *prop,
njs_value_t *value, njs_value_t *setval, njs_value_t *retval);

diff -r 358e048185d8 -r 446a1cb64a6a nginx/ngx_stream_js_module.c
--- a/nginx/ngx_stream_js_module.c Wed Aug 10 20:03:54 2022 -0700
+++ b/nginx/ngx_stream_js_module.c Wed Aug 10 20:04:40 2022 -0700
@@ -493,6 +493,30 @@ static njs_external_t ngx_stream_js_ext
};


+static njs_external_t ngx_stream_js_ext_session_flags[] = {
+
+ {
+ .flags = NJS_EXTERN_PROPERTY | NJS_EXTERN_SYMBOL,
+ .name.symbol = NJS_SYMBOL_TO_STRING_TAG,
+ .u.property = {
+ .value = "Stream Flags",
+ }
+ },
+
+ {
+ .flags = NJS_EXTERN_PROPERTY,
+ .name.string = njs_str("last"),
+ .enumerable = 1,
+ .u.property = {
+ .handler = ngx_js_ext_flags,
+ .magic16 = NGX_JS_BOOLEAN,
+ .magic32 = 0x00000001,
+ }
+ },
+
+};
+
+
static njs_vm_ops_t ngx_stream_js_ops = {
ngx_stream_js_set_timer,
ngx_stream_js_clear_timer,
@@ -525,6 +549,7 @@ static ngx_stream_filter_pt ngx_stream_


static njs_int_t ngx_stream_js_session_proto_id;
+static njs_int_t ngx_stream_js_session_flags_proto_id;


static ngx_int_t
@@ -923,14 +948,12 @@ static njs_int_t
ngx_stream_js_run_event(ngx_stream_session_t *s, ngx_stream_js_ctx_t *ctx,
ngx_stream_js_ev_t *event)
{
- size_t len;
- u_char *p;
- njs_int_t ret;
- ngx_buf_t *b;
- ngx_connection_t *c;
- njs_opaque_value_t last_key, last;
-
- static const njs_str_t last_str = njs_str("last");
+ size_t len;
+ u_char *p;
+ njs_int_t ret;
+ ngx_buf_t *b;
+ uintptr_t flags;
+ ngx_connection_t *c;

if (event->ev == NULL) {
return NJS_OK;
@@ -957,16 +980,12 @@ ngx_stream_js_run_event(ngx_stream_sessi
return ret;
}

- njs_vm_value_string_set(ctx->vm, njs_value_arg(&last_key), last_str.start,
- last_str.length);
-
- njs_value_boolean_set(njs_value_arg(&last), b && b->last_buf);
-
- ret = njs_vm_object_alloc(ctx->vm, njs_value_arg(&ctx->args[2]),
- njs_value_arg(&last_key),
- njs_value_arg(&last), NULL);
+ flags = b && b->last_buf;
+
+ ret = njs_vm_external_create(ctx->vm, njs_value_arg(&ctx->args[2]),
+ ngx_stream_js_session_flags_proto_id, (void *) flags, 0);
if (ret != NJS_OK) {
- return ret;
+ return NGX_ERROR;
}

njs_vm_post_event(ctx->vm, event->ev, njs_value_arg(&ctx->args[1]), 2);
@@ -1787,7 +1806,16 @@ ngx_stream_js_init_conf_vm(ngx_conf_t *c
njs_nitems(ngx_stream_js_ext_session));
if (ngx_stream_js_session_proto_id < 0) {
ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
- "failed to add js request proto");
+ "failed to add js session proto");
+ return NGX_ERROR;
+ }
+
+ ngx_stream_js_session_flags_proto_id = njs_vm_external_prototype(conf->vm,
+ ngx_stream_js_ext_session_flags,
+ njs_nitems(ngx_stream_js_ext_session_flags));
+ if (ngx_stream_js_session_flags_proto_id < 0) {
+ ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
+ "failed to add js session flags proto");
return NGX_ERROR;
}

diff -r 358e048185d8 -r 446a1cb64a6a src/njs.h
--- a/src/njs.h Wed Aug 10 20:03:54 2022 -0700
+++ b/src/njs.h Wed Aug 10 20:04:40 2022 -0700
@@ -155,6 +155,7 @@ struct njs_external_s {
struct {
const char value[15]; /* NJS_STRING_SHORT + 1. */
njs_prop_handler_t handler;
+ uint16_t magic16;
uint32_t magic32;
} property;

diff -r 358e048185d8 -r 446a1cb64a6a src/njs_extern.c
--- a/src/njs_extern.c Wed Aug 10 20:03:54 2022 -0700
+++ b/src/njs_extern.c Wed Aug 10 20:04:40 2022 -0700
@@ -92,7 +92,7 @@ njs_external_add(njs_vm_t *vm, njs_arr_t
prop->type = NJS_PROPERTY_HANDLER;
prop->value.type = NJS_INVALID;
prop->value.data.truth = 1;
- prop->value.data.magic16 = 0;
+ prop->value.data.magic16 = external->u.property.magic16;
prop->value.data.magic32 = external->u.property.magic32;
prop->value.data.u.prop_handler = external->u.property.handler;

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[njs] Stream: improved flags argument for s.on() callback methods.

Dmitry Volyntsev 299 August 10, 2022 11:10PM



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