118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
/* Copyright (C) 2010, 2011 Tony Garnock-Jones. All rights reserved. */
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <signal.h>
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#include <netinet/in.h>
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#include <ucontext.h>
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#include <assert.h>
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typedef unsigned char u_char;
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#include <event.h>
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#include "cmsg_private.h"
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#include "harness.h"
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#include "net.h"
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#include "ref.h"
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#include "sexp.h"
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#include "hashtable.h"
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#include "node.h"
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#include "queue.h"
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#include "direct.h"
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#include "fanout.h"
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#include "meta.h"
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#define WANT_CONSOLE_LISTENER 1
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static void factory_handle_message(node_t *n, sexp_t *m) {
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size_t msglen = sexp_length(m);
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sexp_t *args;
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cmsg_bytes_t selector;
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if (msglen == 0 || !sexp_stringp(sexp_head(m))) {
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warn("Invalid message in factory\n");
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return;
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}
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selector = sexp_data(sexp_head(m));
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args = sexp_tail(m);
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if ((msglen == 5) && !cmsg_bytes_cmp(selector, cmsg_cstring_bytes("create"))) {
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sexp_t *classname = sexp_listref(args, 0);
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sexp_t *ctor_arg = sexp_listref(args, 1);
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sexp_t *reply_sink = sexp_listref(args, 2);
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sexp_t *reply_name = sexp_listref(args, 3);
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if (sexp_stringp(classname) && sexp_stringp(reply_sink) && sexp_stringp(reply_name)) {
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cmsg_bytes_t classname_bytes = sexp_data(classname);
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node_class_t *nc = lookup_node_class(classname_bytes);
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if (nc == NULL) {
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warn("Node class not found <<%.*s>>\n", classname_bytes.len, classname_bytes.bytes);
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} else {
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sexp_t *error = NULL;
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sexp_t *reply;
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if (new_node(nc, ctor_arg, &error) != NULL) {
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reply = sexp_cons(sexp_cstring("create-ok"), NULL);
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} else {
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reply = sexp_cons(sexp_cstring("create-failed"), sexp_cons(error, NULL));
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}
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INCREF(reply);
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post_node(sexp_data(reply_sink), sexp_data(reply_name), reply, sexp_empty_bytes);
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DECREF(reply, sexp_destructor);
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}
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}
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return;
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}
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warn("Message not understood in factory; selector <<%.*s>>, length %u\n",
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selector.len, selector.bytes,
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msglen);
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}
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static node_class_t factory_class = {
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.name = "factory",
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.extend = NULL,
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.destroy = NULL,
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.handle_message = factory_handle_message
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};
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static void init_factory(void) {
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bind_node(cmsg_cstring_bytes("factory"), new_node(&factory_class, NULL, NULL));
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}
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#if WANT_CONSOLE_LISTENER
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static void console_listener(void *arg) {
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IOHandle *in_handle = new_iohandle(0);
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while (1) {
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cmsg_bytes_t buf = iohandle_readwait(in_handle, 1);
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if (buf.len == 0) break;
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iohandle_drain(in_handle, buf.len);
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}
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delete_iohandle(in_handle);
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interrupt_harness();
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}
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#endif
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int main(int argc, char *argv[]) {
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info("cmsg ALPHA, Copyright (C) 2010, 2011 Tony Garnock-Jones. All rights reserved.\n");
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event_init();
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signal(SIGPIPE, SIG_IGN); /* avoid EPIPE when connections drop unexpectedly */
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info("Using libevent version %s\n", event_get_version());
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init_sexp();
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init_node(cmsg_cstring_bytes("server"));
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init_factory();
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init_queue();
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init_direct();
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init_fanout();
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init_meta();
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#if WANT_CONSOLE_LISTENER
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spawn(console_listener, NULL);
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#endif
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start_net(5671);
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boot_harness();
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done_sexp();
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return 0;
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}
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