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[nginx] Stream: set module.

Pavel Pautov
September 24, 2020 05:24PM
details: https://hg.nginx.org/nginx/rev/45e9281c6c5b
branches:
changeset: 7713:45e9281c6c5b
user: Pavel Pautov <p.pautov@f5.com>
date: Fri Aug 28 14:10:54 2020 -0700
description:
Stream: set module.

Adds 'set' directive to the stream server context.

diffstat:

auto/modules | 10 +
auto/options | 3 +
src/stream/ngx_stream_set_module.c | 226 +++++++++++++++++++++++++++++++++++++
3 files changed, 239 insertions(+), 0 deletions(-)

diffs (277 lines):

diff -r eb940fe579cf -r 45e9281c6c5b auto/modules
--- a/auto/modules Thu Sep 24 13:51:29 2020 +0100
+++ b/auto/modules Fri Aug 28 14:10:54 2020 -0700
@@ -1119,6 +1119,16 @@ if [ $STREAM != NO ]; then
. auto/module
fi

+ if [ $STREAM_SET = YES ]; then
+ ngx_module_name=ngx_stream_set_module
+ ngx_module_deps=
+ ngx_module_srcs=src/stream/ngx_stream_set_module.c
+ ngx_module_libs=
+ ngx_module_link=$STREAM_SET
+
+ . auto/module
+ fi
+
if [ $STREAM_UPSTREAM_HASH = YES ]; then
ngx_module_name=ngx_stream_upstream_hash_module
ngx_module_deps=
diff -r eb940fe579cf -r 45e9281c6c5b auto/options
--- a/auto/options Thu Sep 24 13:51:29 2020 +0100
+++ b/auto/options Fri Aug 28 14:10:54 2020 -0700
@@ -124,6 +124,7 @@ STREAM_GEOIP=NO
STREAM_MAP=YES
STREAM_SPLIT_CLIENTS=YES
STREAM_RETURN=YES
+STREAM_SET=YES
STREAM_UPSTREAM_HASH=YES
STREAM_UPSTREAM_LEAST_CONN=YES
STREAM_UPSTREAM_RANDOM=YES
@@ -324,6 +325,7 @@ use the \"--with-mail_ssl_module\" optio
--without-stream_split_clients_module)
STREAM_SPLIT_CLIENTS=NO ;;
--without-stream_return_module) STREAM_RETURN=NO ;;
+ --without-stream_set_module) STREAM_SET=NO ;;
--without-stream_upstream_hash_module)
STREAM_UPSTREAM_HASH=NO ;;
--without-stream_upstream_least_conn_module)
@@ -538,6 +540,7 @@ cat << END
--without-stream_split_clients_module
disable ngx_stream_split_clients_module
--without-stream_return_module disable ngx_stream_return_module
+ --without-stream_set_module disable ngx_stream_set_module
--without-stream_upstream_hash_module
disable ngx_stream_upstream_hash_module
--without-stream_upstream_least_conn_module
diff -r eb940fe579cf -r 45e9281c6c5b src/stream/ngx_stream_set_module.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/stream/ngx_stream_set_module.c Fri Aug 28 14:10:54 2020 -0700
@@ -0,0 +1,226 @@
+
+/*
+ * Copyright (C) Pavel Pautov
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_stream.h>
+
+
+typedef struct {
+ ngx_int_t index;
+ ngx_stream_set_variable_pt set_handler;
+ uintptr_t data;
+ ngx_stream_complex_value_t value;
+} ngx_stream_set_cmd_t;
+
+
+typedef struct {
+ ngx_array_t commands;
+} ngx_stream_set_srv_conf_t;
+
+
+static ngx_int_t ngx_stream_set_handler(ngx_stream_session_t *s);
+static ngx_int_t ngx_stream_set_var(ngx_stream_session_t *s,
+ ngx_stream_variable_value_t *v, uintptr_t data);
+static ngx_int_t ngx_stream_set_init(ngx_conf_t *cf);
+static void *ngx_stream_set_create_srv_conf(ngx_conf_t *cf);
+static char *ngx_stream_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+
+
+static ngx_command_t ngx_stream_set_commands[] = {
+
+ { ngx_string("set"),
+ NGX_STREAM_SRV_CONF|NGX_CONF_TAKE2,
+ ngx_stream_set,
+ NGX_STREAM_SRV_CONF_OFFSET,
+ 0,
+ NULL },
+
+ ngx_null_command
+};
+
+
+static ngx_stream_module_t ngx_stream_set_module_ctx = {
+ NULL, /* preconfiguration */
+ ngx_stream_set_init, /* postconfiguration */
+
+ NULL, /* create main configuration */
+ NULL, /* init main configuration */
+
+ ngx_stream_set_create_srv_conf, /* create server configuration */
+ NULL /* merge server configuration */
+};
+
+
+ngx_module_t ngx_stream_set_module = {
+ NGX_MODULE_V1,
+ &ngx_stream_set_module_ctx, /* module context */
+ ngx_stream_set_commands, /* module directives */
+ NGX_STREAM_MODULE, /* module type */
+ NULL, /* init master */
+ NULL, /* init module */
+ NULL, /* init process */
+ NULL, /* init thread */
+ NULL, /* exit thread */
+ NULL, /* exit process */
+ NULL, /* exit master */
+ NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_int_t
+ngx_stream_set_handler(ngx_stream_session_t *s)
+{
+ ngx_str_t str;
+ ngx_uint_t i;
+ ngx_stream_set_cmd_t *cmds;
+ ngx_stream_set_srv_conf_t *scf;
+ ngx_stream_variable_value_t vv;
+
+ scf = ngx_stream_get_module_srv_conf(s, ngx_stream_set_module);
+ cmds = scf->commands.elts;
+ vv = ngx_stream_variable_null_value;
+
+ for (i = 0; i < scf->commands.nelts; i++) {
+ if (ngx_stream_complex_value(s, &cmds[i].value, &str) != NGX_OK) {
+ return NGX_ERROR;
+ }
+
+ if (cmds[i].set_handler != NULL) {
+ vv.len = str.len;
+ vv.data = str.data;
+ cmds[i].set_handler(s, &vv, cmds[i].data);
+
+ } else {
+ s->variables[cmds[i].index].len = str.len;
+ s->variables[cmds[i].index].valid = 1;
+ s->variables[cmds[i].index].no_cacheable = 0;
+ s->variables[cmds[i].index].not_found = 0;
+ s->variables[cmds[i].index].data = str.data;
+ }
+ }
+
+ return NGX_DECLINED;
+}
+
+
+static ngx_int_t
+ngx_stream_set_var(ngx_stream_session_t *s, ngx_stream_variable_value_t *v,
+ uintptr_t data)
+{
+ *v = ngx_stream_variable_null_value;
+
+ return NGX_OK;
+}
+
+
+static ngx_int_t
+ngx_stream_set_init(ngx_conf_t *cf)
+{
+ ngx_stream_handler_pt *h;
+ ngx_stream_core_main_conf_t *cmcf;
+
+ cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module);
+
+ h = ngx_array_push(&cmcf->phases[NGX_STREAM_PREACCESS_PHASE].handlers);
+ if (h == NULL) {
+ return NGX_ERROR;
+ }
+
+ *h = ngx_stream_set_handler;
+
+ return NGX_OK;
+}
+
+
+static void *
+ngx_stream_set_create_srv_conf(ngx_conf_t *cf)
+{
+ ngx_stream_set_srv_conf_t *conf;
+
+ conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_set_srv_conf_t));
+ if (conf == NULL) {
+ return NULL;
+ }
+
+ /*
+ * set by ngx_pcalloc():
+ *
+ * conf->commands = { NULL };
+ */
+
+ return conf;
+}
+
+
+static char *
+ngx_stream_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+ ngx_stream_set_srv_conf_t *scf = conf;
+
+ ngx_str_t *args;
+ ngx_int_t index;
+ ngx_stream_set_cmd_t *set_cmd;
+ ngx_stream_variable_t *v;
+ ngx_stream_compile_complex_value_t ccv;
+
+ args = cf->args->elts;
+
+ if (args[1].data[0] != '$') {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid variable name \"%V\"", &args[1]);
+ return NGX_CONF_ERROR;
+ }
+
+ args[1].len--;
+ args[1].data++;
+
+ v = ngx_stream_add_variable(cf, &args[1],
+ NGX_STREAM_VAR_CHANGEABLE|NGX_STREAM_VAR_WEAK);
+ if (v == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ index = ngx_stream_get_variable_index(cf, &args[1]);
+ if (index == NGX_ERROR) {
+ return NGX_CONF_ERROR;
+ }
+
+ if (v->get_handler == NULL) {
+ v->get_handler = ngx_stream_set_var;
+ }
+
+ if (scf->commands.elts == NULL) {
+ if (ngx_array_init(&scf->commands, cf->pool, 1,
+ sizeof(ngx_stream_set_cmd_t))
+ != NGX_OK)
+ {
+ return NGX_CONF_ERROR;
+ }
+ }
+
+ set_cmd = ngx_array_push(&scf->commands);
+ if (set_cmd == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ set_cmd->index = index;
+ set_cmd->set_handler = v->set_handler;
+ set_cmd->data = v->data;
+
+ ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t));
+
+ ccv.cf = cf;
+ ccv.value = &args[2];
+ ccv.complex_value = &set_cmd->value;
+
+ if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+
+ return NGX_CONF_OK;
+}
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Subject Author Views Posted

[nginx] Stream: set module.

Pavel Pautov 121 September 24, 2020 05:24PM



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