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Stream: return module.

This commit is contained in:
Roman Arutyunyan 2016-05-18 22:08:49 +03:00
parent 3ed8de06ec
commit 74839ea88f
3 changed files with 218 additions and 0 deletions
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8
auto/modules
View File

@ -1028,6 +1028,14 @@ if [ $STREAM != NO ]; then
. auto/module
fi
if [ $STREAM_RETURN = YES ]; then
ngx_module_name=ngx_stream_return_module
ngx_module_deps=
ngx_module_srcs=src/stream/ngx_stream_return_module.c
. auto/module
fi
if [ $STREAM_UPSTREAM_HASH = YES ]; then
ngx_module_name=ngx_stream_upstream_hash_module
ngx_module_deps=

3
auto/options
View File

@ -118,6 +118,7 @@ STREAM_SSL=NO
STREAM_LIMIT_CONN=YES
STREAM_ACCESS=YES
STREAM_MAP=YES
STREAM_RETURN=YES
STREAM_UPSTREAM_HASH=YES
STREAM_UPSTREAM_LEAST_CONN=YES
STREAM_UPSTREAM_ZONE=YES
@ -296,6 +297,7 @@ use the \"--with-mail_ssl_module\" option instead"
STREAM_LIMIT_CONN=NO ;;
--without-stream_access_module) STREAM_ACCESS=NO ;;
--without-stream_map_module) STREAM_MAP=NO ;;
--without-stream_return_module) STREAM_RETURN=NO ;;
--without-stream_upstream_hash_module)
STREAM_UPSTREAM_HASH=NO ;;
--without-stream_upstream_least_conn_module)
@ -495,6 +497,7 @@ cat << END
--without-stream_limit_conn_module disable ngx_stream_limit_conn_module
--without-stream_access_module disable ngx_stream_access_module
--without-stream_map_module disable ngx_stream_map_module
--without-stream_return_module disable ngx_stream_return_module
--without-stream_upstream_hash_module
disable ngx_stream_upstream_hash_module
--without-stream_upstream_least_conn_module

207
src/stream/ngx_stream_return_module.c Normal file
View File

@ -0,0 +1,207 @@
/*
* Copyright (C) Roman Arutyunyan
* Copyright (C) Nginx, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_stream.h>
typedef struct {
ngx_stream_complex_value_t text;
} ngx_stream_return_srv_conf_t;
typedef struct {
ngx_buf_t buf;
} ngx_stream_return_ctx_t;
static void ngx_stream_return_handler(ngx_stream_session_t *s);
static void ngx_stream_return_write_handler(ngx_event_t *ev);
static void *ngx_stream_return_create_srv_conf(ngx_conf_t *cf);
static char *ngx_stream_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static ngx_command_t ngx_stream_return_commands[] = {
{ ngx_string("return"),
NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
ngx_stream_return,
NGX_STREAM_SRV_CONF_OFFSET,
0,
NULL },
ngx_null_command
};
static ngx_stream_module_t ngx_stream_return_module_ctx = {
NULL, /* preconfiguration */
NULL, /* postconfiguration */
NULL, /* create main configuration */
NULL, /* init main configuration */
ngx_stream_return_create_srv_conf, /* create server configuration */
NULL, /* merge server configuration */
};
ngx_module_t ngx_stream_return_module = {
NGX_MODULE_V1,
&ngx_stream_return_module_ctx, /* module context */
ngx_stream_return_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 void
ngx_stream_return_handler(ngx_stream_session_t *s)
{
ngx_str_t text;
ngx_connection_t *c;
ngx_stream_return_ctx_t *ctx;
ngx_stream_return_srv_conf_t *rscf;
c = s->connection;
c->log->action = "returning text";
rscf = ngx_stream_get_module_srv_conf(s, ngx_stream_return_module);
if (ngx_stream_complex_value(s, &rscf->text, &text) != NGX_OK) {
ngx_stream_close_connection(c);
return;
}
ngx_log_debug1(NGX_LOG_DEBUG_STREAM, c->log, 0,
"stream return text: \"%V\"", &text);
if (text.len == 0) {
ngx_stream_close_connection(c);
return;
}
ctx = ngx_pcalloc(c->pool, sizeof(ngx_stream_return_ctx_t));
if (ctx == NULL) {
ngx_stream_close_connection(c);
return;
}
ngx_stream_set_ctx(s, ctx, ngx_stream_return_module);
ctx->buf.pos = text.data;
ctx->buf.last = text.data + text.len;
c->write->handler = ngx_stream_return_write_handler;
ngx_stream_return_write_handler(c->write);
}
static void
ngx_stream_return_write_handler(ngx_event_t *ev)
{
ssize_t n;
ngx_buf_t *b;
ngx_connection_t *c;
ngx_stream_session_t *s;
ngx_stream_return_ctx_t *ctx;
c = ev->data;
s = c->data;
if (ev->timedout) {
ngx_connection_error(c, NGX_ETIMEDOUT, "connection timed out");
ngx_stream_close_connection(c);
return;
}
if (ev->ready) {
ctx = ngx_stream_get_module_ctx(s, ngx_stream_return_module);
b = &ctx->buf;
n = c->send(c, b->pos, b->last - b->pos);
if (n == NGX_ERROR) {
ngx_stream_close_connection(c);
return;
}
if (n > 0) {
b->pos += n;
if (b->pos == b->last) {
ngx_stream_close_connection(c);
return;
}
}
}
if (ngx_handle_write_event(ev, 0) != NGX_OK) {
ngx_stream_close_connection(c);
return;
}
ngx_add_timer(ev, 5000);
}
static void *
ngx_stream_return_create_srv_conf(ngx_conf_t *cf)
{
ngx_stream_return_srv_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_return_srv_conf_t));
if (conf == NULL) {
return NULL;
}
return conf;
}
static char *
ngx_stream_return(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_stream_return_srv_conf_t *rscf = conf;
ngx_str_t *value;
ngx_stream_core_srv_conf_t *cscf;
ngx_stream_compile_complex_value_t ccv;
if (rscf->text.value.data) {
return "is duplicate";
}
value = cf->args->elts;
ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[1];
ccv.complex_value = &rscf->text;
if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
cscf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_core_module);
cscf->handler = ngx_stream_return_handler;
return NGX_CONF_OK;
}