refactor: http_router and session

.vscode/settings.json

@@ -113,7 +113,6 @@
 		"vec.h": "c",
 		"module_database.h": "c",
 		"perf_window_t.h": "c",
-		"typeinfo": "c",
 		"module_config.h": "c",
 		"tenant.h": "c",
 		"route_config.h": "c",

runtime/include/http_router.h

@@ -5,11 +5,11 @@
 
 #include "admissions_info.h"
 #include "http.h"
-#include "route_config.h"
 #include "module_database.h"
+#include "route_config.h"
 #include "tcp_server.h"
 
-#define HTTP_ROUTER_CAPACITY 32
+#define HTTP_ROUTER_ROUTES_CAPACITY 32
 
 /* Assumption: entrypoint is always _start. This should be enhanced later */
 struct route {
@@ -23,16 +23,15 @@ struct route {
 	struct admissions_info admissions_info;
 };
 
-
 struct http_router {
-	struct route routes[HTTP_ROUTER_CAPACITY];
-	size_t       route_length;
+	struct route routes[HTTP_ROUTER_ROUTES_CAPACITY];
+	size_t       routes_length;
 };
 
 static inline void
 http_router_init(struct http_router *router)
 {
-	router->route_length = 0;
+	router->routes_length = 0;
 }
 
 static inline int
@@ -43,38 +42,37 @@ http_router_add_route(struct http_router *router, struct route_config *config, s
 	assert(module != NULL);
 	assert(config->route != NULL);
 	assert(config->http_resp_content_type != NULL);
+	assert(router->routes_length <= HTTP_ROUTER_ROUTES_CAPACITY);
 
-	if (router->route_length < HTTP_ROUTER_CAPACITY) {
-		router->routes[router->route_length] = (struct route){
-			.route                 = config->route,
-			.module                = module,
-			.relative_deadline_us  = config->relative_deadline_us,
-			.relative_deadline     = (uint64_t)config->relative_deadline_us * runtime_processor_speed_MHz,
-			.response_size         = config->http_resp_size,
-			.response_content_type = config->http_resp_content_type
-		};
+	if (unlikely(router->routes_length == HTTP_ROUTER_ROUTES_CAPACITY)) { return -1; }
 
-		/* Move strings from config */
-		config->route                  = NULL;
-		config->http_resp_content_type = NULL;
+	router->routes[router->routes_length] = (struct route){
+		.route                 = config->route,
+		.module                = module,
+		.relative_deadline_us  = config->relative_deadline_us,
+		.relative_deadline     = (uint64_t)config->relative_deadline_us * runtime_processor_speed_MHz,
+		.response_size         = config->http_resp_size,
+		.response_content_type = config->http_resp_content_type
+	};
 
-		/* Admissions Control */
-		uint64_t expected_execution = (uint64_t)config->expected_execution_us * runtime_processor_speed_MHz;
-		admissions_info_initialize(&router->routes[router->route_length].admissions_info,
-		                           config->admissions_percentile, expected_execution,
-		                           router->routes[router->route_length].relative_deadline);
+	/* Move strings from config */
+	config->route                  = NULL;
+	config->http_resp_content_type = NULL;
 
-		router->route_length++;
-		return 0;
-	}
+	/* Admissions Control */
+	uint64_t expected_execution = (uint64_t)config->expected_execution_us * runtime_processor_speed_MHz;
+	admissions_info_initialize(&router->routes[router->routes_length].admissions_info,
+	                           config->admissions_percentile, expected_execution,
+	                           router->routes[router->routes_length].relative_deadline);
 
-	return -1;
+	router->routes_length++;
+	return 0;
 }
 
 static inline struct route *
 http_router_match_route(struct http_router *router, char *route)
 {
-	for (int i = 0; i < router->route_length; i++) {
+	for (int i = 0; i < router->routes_length; i++) {
 		if (strncmp(route, router->routes[i].route, strlen(router->routes[i].route)) == 0) {
 			return &router->routes[i];
 		}

runtime/include/http_session.h

@@ -25,7 +25,7 @@ struct http_session {
 	/* HTTP State */
 	struct sockaddr     client_address; /* client requesting connection! */
 	int                 socket;
-	http_parser         http_parser;
+	struct http_parser  http_parser;
 	struct http_request http_request;
 	struct vec_u8       request;
 	struct vec_u8       response;

runtime/include/module.h

@@ -18,9 +18,6 @@
 #include "wasm_memory.h"
 #include "wasm_table.h"
 
-#define MODULE_MAX_PATH_LENGTH  256
-#define MODULE_MAX_ROUTE_LENGTH 256
-
 #define MODULE_DATABASE_CAPACITY 128
 
 extern thread_local int worker_thread_idx;

runtime/src/http_parser_settings.c

@@ -191,23 +191,8 @@ http_parser_settings_on_header_end(http_parser *parser)
 	debuglog("parser: %p\n", parser);
 #endif
 
-	http_request->header_end = true;
-
-	/* Search header for content length */
-	for (int i = 0; i < http_request->header_count; i++) {
-		if (strncasecmp(http_request->headers[i].key, "content-length", strlen("content-length")) == 0) {
-			intmax_t temp = strtoimax(http_request->headers[i].value, NULL, 10);
-
-			if (temp < 0 || temp > INT_MAX) {
-				/* TODO: Improve error handling to not crash runtime */
-				fprintf(stderr, "Unable to parse int for key %.*s\n",
-				        http_request->headers[i].key_length, http_request->headers[i].key);
-				assert(0);
-			} else {
-				http_request->body_length = (int)temp;
-			}
-		}
-	}
+	http_request->header_end  = true;
+	http_request->body_length = parser->content_length;
 
 	return 0;
 }