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authorKonstantin Ananyev <konstantin.ananyev@intel.com>2017-10-31 12:40:17 +0000
committerKonstantin Ananyev <konstantin.ananyev@intel.com>2017-10-31 14:19:39 +0000
commite18a033b921d0d79fa8278f853548e6125b93e0c (patch)
treea6a55edf6ddceef824561818c9836914c326340d /app/nginx/src/stream/ngx_stream_split_clients_module.c
parent7e18fa1bf263822c46d7431a911b41d6377d5f69 (diff)
Integrate TLDK with NGINX
Created a clone of nginx (from https://github.com/nginx/nginx) to demonstrate and benchmark TLDK library integrated with real world application. A new nginx module is created and and BSD socket-like API is implemented on top of native TLDK API. Note, that right now only minimalistic subset of socket-like API is provided: - accept - close - readv - recv - writev so only limited nginx functionality is available for a moment. Change-Id: Ie1efe9349a0538da4348a48fb8306cbf636b5a92 Signed-off-by: Mohammad Abdul Awal <mohammad.abdul.awal@intel.com> Signed-off-by: Reshma Pattan <reshma.pattan@intel.com> Signed-off-by: Remy Horton <remy.horton@intel.com> Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Diffstat (limited to 'app/nginx/src/stream/ngx_stream_split_clients_module.c')
-rw-r--r--app/nginx/src/stream/ngx_stream_split_clients_module.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/app/nginx/src/stream/ngx_stream_split_clients_module.c b/app/nginx/src/stream/ngx_stream_split_clients_module.c
new file mode 100644
index 0000000..af6c8a1
--- /dev/null
+++ b/app/nginx/src/stream/ngx_stream_split_clients_module.c
@@ -0,0 +1,244 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_stream.h>
+
+
+typedef struct {
+ uint32_t percent;
+ ngx_stream_variable_value_t value;
+} ngx_stream_split_clients_part_t;
+
+
+typedef struct {
+ ngx_stream_complex_value_t value;
+ ngx_array_t parts;
+} ngx_stream_split_clients_ctx_t;
+
+
+static char *ngx_conf_split_clients_block(ngx_conf_t *cf, ngx_command_t *cmd,
+ void *conf);
+static char *ngx_stream_split_clients(ngx_conf_t *cf, ngx_command_t *dummy,
+ void *conf);
+
+static ngx_command_t ngx_stream_split_clients_commands[] = {
+
+ { ngx_string("split_clients"),
+ NGX_STREAM_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE2,
+ ngx_conf_split_clients_block,
+ NGX_STREAM_MAIN_CONF_OFFSET,
+ 0,
+ NULL },
+
+ ngx_null_command
+};
+
+
+static ngx_stream_module_t ngx_stream_split_clients_module_ctx = {
+ NULL, /* preconfiguration */
+ NULL, /* postconfiguration */
+
+ NULL, /* create main configuration */
+ NULL, /* init main configuration */
+
+ NULL, /* create server configuration */
+ NULL /* merge server configuration */
+};
+
+
+ngx_module_t ngx_stream_split_clients_module = {
+ NGX_MODULE_V1,
+ &ngx_stream_split_clients_module_ctx, /* module context */
+ ngx_stream_split_clients_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_split_clients_variable(ngx_stream_session_t *s,
+ ngx_stream_variable_value_t *v, uintptr_t data)
+{
+ ngx_stream_split_clients_ctx_t *ctx =
+ (ngx_stream_split_clients_ctx_t *) data;
+
+ uint32_t hash;
+ ngx_str_t val;
+ ngx_uint_t i;
+ ngx_stream_split_clients_part_t *part;
+
+ *v = ngx_stream_variable_null_value;
+
+ if (ngx_stream_complex_value(s, &ctx->value, &val) != NGX_OK) {
+ return NGX_OK;
+ }
+
+ hash = ngx_murmur_hash2(val.data, val.len);
+
+ part = ctx->parts.elts;
+
+ for (i = 0; i < ctx->parts.nelts; i++) {
+
+ ngx_log_debug2(NGX_LOG_DEBUG_STREAM, s->connection->log, 0,
+ "stream split: %uD %uD", hash, part[i].percent);
+
+ if (hash < part[i].percent || part[i].percent == 0) {
+ *v = part[i].value;
+ return NGX_OK;
+ }
+ }
+
+ return NGX_OK;
+}
+
+
+static char *
+ngx_conf_split_clients_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+ char *rv;
+ uint32_t sum, last;
+ ngx_str_t *value, name;
+ ngx_uint_t i;
+ ngx_conf_t save;
+ ngx_stream_variable_t *var;
+ ngx_stream_split_clients_ctx_t *ctx;
+ ngx_stream_split_clients_part_t *part;
+ ngx_stream_compile_complex_value_t ccv;
+
+ ctx = ngx_pcalloc(cf->pool, sizeof(ngx_stream_split_clients_ctx_t));
+ if (ctx == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ value = cf->args->elts;
+
+ ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t));
+
+ ccv.cf = cf;
+ ccv.value = &value[1];
+ ccv.complex_value = &ctx->value;
+
+ if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+
+ name = value[2];
+
+ if (name.data[0] != '$') {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid variable name \"%V\"", &name);
+ return NGX_CONF_ERROR;
+ }
+
+ name.len--;
+ name.data++;
+
+ var = ngx_stream_add_variable(cf, &name, NGX_STREAM_VAR_CHANGEABLE);
+ if (var == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ var->get_handler = ngx_stream_split_clients_variable;
+ var->data = (uintptr_t) ctx;
+
+ if (ngx_array_init(&ctx->parts, cf->pool, 2,
+ sizeof(ngx_stream_split_clients_part_t))
+ != NGX_OK)
+ {
+ return NGX_CONF_ERROR;
+ }
+
+ save = *cf;
+ cf->ctx = ctx;
+ cf->handler = ngx_stream_split_clients;
+ cf->handler_conf = conf;
+
+ rv = ngx_conf_parse(cf, NULL);
+
+ *cf = save;
+
+ if (rv != NGX_CONF_OK) {
+ return rv;
+ }
+
+ sum = 0;
+ last = 0;
+ part = ctx->parts.elts;
+
+ for (i = 0; i < ctx->parts.nelts; i++) {
+ sum = part[i].percent ? sum + part[i].percent : 10000;
+ if (sum > 10000) {
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "percent total is greater than 100%%");
+ return NGX_CONF_ERROR;
+ }
+
+ if (part[i].percent) {
+ last += part[i].percent * (uint64_t) 0xffffffff / 10000;
+ part[i].percent = last;
+ }
+ }
+
+ return rv;
+}
+
+
+static char *
+ngx_stream_split_clients(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
+{
+ ngx_int_t n;
+ ngx_str_t *value;
+ ngx_stream_split_clients_ctx_t *ctx;
+ ngx_stream_split_clients_part_t *part;
+
+ ctx = cf->ctx;
+ value = cf->args->elts;
+
+ part = ngx_array_push(&ctx->parts);
+ if (part == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ if (value[0].len == 1 && value[0].data[0] == '*') {
+ part->percent = 0;
+
+ } else {
+ if (value[0].len == 0 || value[0].data[value[0].len - 1] != '%') {
+ goto invalid;
+ }
+
+ n = ngx_atofp(value[0].data, value[0].len - 1, 2);
+ if (n == NGX_ERROR || n == 0) {
+ goto invalid;
+ }
+
+ part->percent = (uint32_t) n;
+ }
+
+ part->value.len = value[1].len;
+ part->value.valid = 1;
+ part->value.no_cacheable = 0;
+ part->value.not_found = 0;
+ part->value.data = value[1].data;
+
+ return NGX_CONF_OK;
+
+invalid:
+
+ ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+ "invalid percent value \"%V\"", &value[0]);
+ return NGX_CONF_ERROR;
+}