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authorAndrew Clayton <a.clayton@nginx.com>2023-10-26 22:48:07 +0100
committerAndrew Clayton <a.clayton@nginx.com>2023-10-26 22:54:34 +0100
commite3a37a1bb4908b02553096afaeb380dbc85bb7bb (patch)
tree6457f713cbb2d64b0d6f8839e662733e258c5df2 /wasmtime-wasi-http.c
parent4904aa341be9c74dec28e6eeea79b707211f2f06 (diff)
downloadproject_blackbird-e3a37a1bb4908b02553096afaeb380dbc85bb7bb.tar.gz
project_blackbird-e3a37a1bb4908b02553096afaeb380dbc85bb7bb.tar.bz2
Move wasmtime-wasi-http to its own directory
Moved to c/wasmtime-wasi-http Signed-off-by: Andrew Clayton <a.clayton@nginx.com>
Diffstat (limited to 'wasmtime-wasi-http.c')
-rw-r--r--wasmtime-wasi-http.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/wasmtime-wasi-http.c b/wasmtime-wasi-http.c
deleted file mode 100644
index e1b6693..0000000
--- a/wasmtime-wasi-http.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * Copyright (C) Andrew Clayton
- * Copyright (C) F5, Inc.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <wasm.h>
-#include <wasi.h>
-#include <wasmtime.h>
-
-static void exit_with_error(const char *message, wasmtime_error_t *error,
- wasm_trap_t *trap)
-{
- wasm_byte_vec_t error_message;
-
- fprintf(stderr, "error: %s\n", message);
- if (error != NULL) {
- wasmtime_error_message(error, &error_message);
- wasmtime_error_delete(error);
- } else {
- wasm_trap_message(trap, &error_message);
- wasm_trap_delete(trap);
- }
- fprintf(stderr, "%.*s\n", (int) error_message.size, error_message.data);
- wasm_byte_vec_delete(&error_message);
-
- exit(EXIT_FAILURE);
-}
-
-static wasm_trap_t *dummy_func(void *env, wasmtime_caller_t *caller,
- const wasmtime_val_t *args, size_t nargs,
- wasmtime_val_t *results, size_t nresults)
-{
- (void)env;
- (void)caller;
- (void)args;
- (void)nargs;
- (void)results;
- (void)nresults;
-
- return NULL;
-}
-
-static wasm_functype_t *create_wasm_func(const wasm_valkind_t *pk,
- size_t nr_params,
- const wasm_valkind_t *rk,
- size_t nr_results)
-{
- wasm_valtype_t *pt[14];
- wasm_valtype_t *rt[1];
- wasm_valtype_vec_t params;
- wasm_valtype_vec_t results;
-
- if (nr_params > 0) {
- for (size_t i = 0; i < nr_params; i++)
- pt[i] = wasm_valtype_new(pk[i]);
- wasm_valtype_vec_new(&params, nr_params, pt);
- } else {
- wasm_valtype_vec_new_empty(&params);
- }
-
- if (nr_results > 0) {
- for (size_t i = 0; i < nr_results; i++)
- rt[i] = wasm_valtype_new(rk[i]);
- wasm_valtype_vec_new(&results, nr_results, rt);
- } else {
- wasm_valtype_vec_new_empty(&results);
- }
-
- return wasm_functype_new(&params, &results);
-}
-
-static inline size_t rg(const char *s)
-{
- return strlen(s);
-}
-
-/*
- * Argument counting macros gleamed from
- * https://gist.github.com/christophercrouzet/db9bbb07d427381253a91210e7ddc68d
- */
-#define ARG( \
- _0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, ...) \
- _14
-#define COUNT_ARGS(...) \
- ARG(__VA_ARGS__, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0,)
-
-#define SET_VALS(type, ...) \
- .type = { __VA_ARGS__ }, \
- .nr_##type = COUNT_ARGS(__VA_ARGS__)
-
-#define SET_FUNC(function, function_name, module) \
- .func_name = function_name, \
- .func_namelen = strlen(function_name), \
- .mod_name = module, \
- .mod_namelen = strlen(module), \
- .func = dummy_func
-
-static void set_function_imports(wasmtime_linker_t *linker)
-{
- static const struct {
- const char *func_name;
- int func_namelen;
- const char *mod_name;
- int mod_namelen;
-
- wasmtime_func_callback_t func;
-
- wasm_valkind_t params[14];
- size_t nr_params;
- wasm_valkind_t results[1];
- size_t nr_results;
- } import_functions[] = {
- {
- SET_FUNC(poll_oneoff, "poll-oneoff", "poll2"),
- SET_VALS(params, WASM_I32, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(read, "read", "streams2"),
- SET_VALS(params, WASM_I32, WASM_I64, WASM_I32),
- }, {
- SET_FUNC(blocking_read, "blocking-read", "streams2"),
- SET_VALS(params, WASM_I32, WASM_I64, WASM_I32),
- }, {
- SET_FUNC(subscribe_to_input_stream,
- "subscribe-to-input-stream", "streams2"),
- SET_VALS(params, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(write, "write", "streams2"),
- SET_VALS(params,
- WASM_I32, WASM_I32, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(blocking_write, "blocking-write", "streams2"),
- SET_VALS(params,
- WASM_I32, WASM_I32, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(subscribe_to_output_stream,
- "subscribe-to-output-stream", "streams2"),
- SET_VALS(params, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(handle, "handle", "default-outgoing-HTTP2"),
- SET_VALS(params,
- WASM_I32, WASM_I32, WASM_I32, WASM_I32,
- WASM_I32, WASM_I32, WASM_I32, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(new_fields, "new-fields", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(fields_entries, "fields-entries", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(finish_incoming_stream,
- "finish-incoming-stream", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(finish_outgoing_stream,
- "finish-outgoing-stream", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(incoming_request_method,
- "incoming-request-method", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(incoming_request_path_with_query,
- "incoming-request-path-with-query", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(incoming_request_headers,
- "incoming-request-headers", "types2"),
- SET_VALS(params, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(incoming_request_consume,
- "incoming-request-consume", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(new_outgoing_request, "new-outgoing-request",
- "types2"),
- SET_VALS(params,
- WASM_I32, WASM_I32, WASM_I32, WASM_I32,
- WASM_I32, WASM_I32, WASM_I32, WASM_I32,
- WASM_I32, WASM_I32, WASM_I32, WASM_I32,
- WASM_I32, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(outgoing_request_write,
- "outgoing-request-write", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(set_response_outparam,
- "set-response-outparam", "types2"),
- SET_VALS(params,
- WASM_I32, WASM_I32, WASM_I32, WASM_I32,
- WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(incoming_response_status,
- "incoming-response-status", "types2"),
- SET_VALS(params, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(incoming_response_headers,
- "incoming-response-headers", "types2"),
- SET_VALS(params, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(incoming_response_consume,
- "incoming-response-consume", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(new_outgoing_response,
- "new-outgoing-response", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- SET_VALS(results, WASM_I32),
- }, {
- SET_FUNC(outgoing_response_write,
- "outgoing-response-write", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(future_incoming_response-get,
- "future-incoming-response-get", "types2"),
- SET_VALS(params, WASM_I32, WASM_I32),
- }, {
- SET_FUNC(listen_to_fauture_incoming_response,
- "listen-to-future-incoming-response",
- "types2"),
- SET_VALS(params, WASM_I32),
- SET_VALS(results, WASM_I32),
- },
-
- { }
- }, *imf;
-
- for (imf = import_functions; imf->func_name != NULL; imf++) {
- wasm_functype_t *func_ty;
-
- printf(" [%s::%s]\n", imf->mod_name, imf->func_name);
-
- func_ty = create_wasm_func(imf->params, imf->nr_params,
- imf->results, imf->nr_results);
- wasmtime_linker_define_func(linker,
- imf->mod_name, imf->mod_namelen,
- imf->func_name, imf->func_namelen,
- func_ty, imf->func, NULL, NULL);
- wasm_functype_delete(func_ty);
- }
-}
-
-int main(void)
-{
- wasm_engine_t *engine;
- wasmtime_store_t *store;
- wasmtime_context_t *context;
- wasmtime_module_t *module = NULL;
- wasmtime_linker_t *linker;
- wasmtime_error_t *error;
- wasm_byte_vec_t wasm;
- wasmtime_extern_t item;
- wasi_config_t *wasi_config;
- FILE *file;
- size_t file_size;
- bool ok;
-
- printf("Initialising...\n");
- engine = wasm_engine_new();
- store = wasmtime_store_new(engine, NULL, NULL);
- context = wasmtime_store_context(store);
-
- linker = wasmtime_linker_new(engine);
- error = wasmtime_linker_define_wasi(linker);
- if (error != NULL)
- exit_with_error("failed to link wasi", error, NULL);
-
- printf("Loading binary...\n");
- file = fopen(WASM_MODULE, "r");
- if (!file) {
- printf("> Error loading file!\n");
- exit(EXIT_FAILURE);
- }
- fseek(file, 0L, SEEK_END);
- file_size = ftell(file);
- wasm_byte_vec_new_uninitialized(&wasm, file_size);
- fseek(file, 0L, SEEK_SET);
- if (fread(wasm.data, file_size, 1, file) != 1) {
- printf("> Error loading module!\n");
- exit(EXIT_FAILURE);
- }
- fclose(file);
-
- printf("Compiling module...\n");
- error = wasmtime_module_new(engine, (uint8_t*)wasm.data, wasm.size,
- &module);
- if (!module)
- exit_with_error("failed to compile module", error, NULL);
- wasm_byte_vec_delete(&wasm);
-
- printf("Setting function imports...\n");
- set_function_imports(linker);
-
- printf("Initialising WASI...\n");
- wasi_config = wasi_config_new();
- wasi_config_inherit_env(wasi_config);
- wasi_config_inherit_stdin(wasi_config);
- wasi_config_inherit_stdout(wasi_config);
- wasi_config_inherit_stderr(wasi_config);
- error = wasmtime_context_set_wasi(context, wasi_config);
- if (error)
- exit_with_error("failed to initialise WASI", error, NULL);
-
- printf("Instantiating module...\n");
- error = wasmtime_linker_module(linker, context, "", 0, module);
- if (error != NULL)
- exit_with_error("failed to instantiate module", error, NULL);
-
- printf("Getting function exports...\n");
- ok = wasmtime_linker_get(linker, context, "", 0, "HTTP#handle", 11,
- &item);
- if (!ok) {
- printf("> Error getting function export [HTTP#handle]\n");
- exit(EXIT_FAILURE);
- }
- printf(" [HTTP#handle]\n");
-
- ok = wasmtime_linker_get(linker, context, "", 0, "cabi_realloc", 12,
- &item);
- if (!ok) {
- printf("> Error getting function export [cabi_realloc]\n");
- exit(EXIT_FAILURE);
- }
- printf(" [cabi_realloc]\n");
-
- printf("Shutting down...\n");
- wasmtime_module_delete(module);
- wasmtime_store_delete(store);
- wasm_engine_delete(engine);
-
- printf("Done.\n");
-
- exit(EXIT_SUCCESS);;
-}