/*
- * Copyright (C) 2015-2018 "IoT.bzh"
+ * Copyright (C) 2015-2019 "IoT.bzh"
* Author José Bollo <jose.bollo@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
#include "afb-ws.h"
#include "afb-msg-json.h"
#include "afb-proto-ws.h"
-#include "jobs.h"
#include "fdev.h"
+#include "verbose.h"
struct afb_proto_ws;
struct client_call {
struct client_call *next; /* the next call */
struct afb_proto_ws *protows; /* the proto_ws */
- void *request;
+ void *request; /* the request closure */
uint32_t callid; /* the message identifier */
};
/* on hangup callback */
void (*on_hangup)(void *closure);
+
+ /* queuing facility for processing messages */
+ int (*queuing)(struct afb_proto_ws *proto, void (*process)(int s, void *c), void *closure);
};
/******************* streaming objects **********************************/
{
const char *string;
struct json_object *o;
+ enum json_tokener_error jerr;
int rc = readbuf_string(rb, &string, NULL);
if (rc) {
- o = json_tokener_parse(string);
- if (o == NULL && strcmp(string, "null"))
+ o = json_tokener_parse_verbose(string, &jerr);
+ if (jerr != json_tokener_success)
o = json_object_new_string(string);
*object = o;
}
return string != NULL && writebuf_string(wb, string);
}
+/******************* queuing of messages *****************/
+
+/* queue the processing of the received message (except if size=0 cause it's not a valid message) */
+static void queue_message_processing(struct afb_proto_ws *protows, char *data, size_t size, void (*processing)(int,void*))
+{
+ struct binary *binary;
+
+ if (size) {
+ binary = malloc(sizeof *binary);
+ if (!binary) {
+ /* TODO process the problem */
+ errno = ENOMEM;
+ } else {
+ binary->protows = protows;
+ binary->rb.base = data;
+ binary->rb.head = data;
+ binary->rb.end = data + size;
+ if (!protows->queuing
+ || protows->queuing(protows, processing, binary) < 0)
+ processing(0, binary);
+ return;
+ }
+ }
+ free(data);
+}
+
/******************* ws request part for server *****************/
void afb_proto_ws_call_addref(struct afb_proto_ws_call *call)
if (protows->client_itf->on_event_create && client_msg_event_read(rb, &event_id, &event_name))
protows->client_itf->on_event_create(protows->closure, event_name, (int)event_id);
+ else
+ ERROR("Ignoring creation of event");
}
/* removes an event */
if (protows->client_itf->on_event_remove && client_msg_event_read(rb, &event_id, &event_name))
protows->client_itf->on_event_remove(protows->closure, event_name, (int)event_id);
+ else
+ ERROR("Ignoring deletion of event");
}
/* subscribes an event */
if (protows->client_itf->on_event_subscribe && client_msg_call_get(protows, rb, &call) && client_msg_event_read(rb, &event_id, &event_name))
protows->client_itf->on_event_subscribe(protows->closure, call->request, event_name, (int)event_id);
+ else
+ ERROR("Ignoring subscription to event");
}
/* unsubscribes an event */
if (protows->client_itf->on_event_unsubscribe && client_msg_call_get(protows, rb, &call) && client_msg_event_read(rb, &event_id, &event_name))
protows->client_itf->on_event_unsubscribe(protows->closure, call->request, event_name, (int)event_id);
+ else
+ ERROR("Ignoring unsubscription to event");
}
/* receives broadcasted events */
static void client_on_event_broadcast(struct afb_proto_ws *protows, struct readbuf *rb)
{
- const char *event_name;
+ const char *event_name, *uuid;
+ char hop;
struct json_object *object;
- if (protows->client_itf->on_event_broadcast && readbuf_string(rb, &event_name, NULL) && readbuf_object(rb, &object))
- protows->client_itf->on_event_broadcast(protows->closure, event_name, object);
+ if (protows->client_itf->on_event_broadcast && readbuf_string(rb, &event_name, NULL) && readbuf_object(rb, &object) && (uuid = readbuf_get(rb, 16)) && readbuf_char(rb, &hop))
+ protows->client_itf->on_event_broadcast(protows->closure, event_name, object, (unsigned char*)uuid, (uint8_t)hop);
+ else
+ ERROR("Ignoring broadcast of event");
}
/* pushs an event */
if (protows->client_itf->on_event_push && client_msg_event_read(rb, &event_id, &event_name) && readbuf_object(rb, &object))
protows->client_itf->on_event_push(protows->closure, event_name, (int)event_id, object);
+ else
+ ERROR("Ignoring push of event");
}
static void client_on_reply(struct afb_proto_ws *protows, struct readbuf *rb)
/* callback when receiving binary data */
static void client_on_binary(void *closure, char *data, size_t size)
{
- int rc;
- struct binary *binary;
+ struct afb_proto_ws *protows = closure;
- if (size) {
- binary = malloc(sizeof *binary);
- if (!binary) {
- errno = ENOMEM;
- } else {
- binary->protows = closure;
- binary->rb.base = data;
- binary->rb.head = data;
- binary->rb.end = data + size;
- rc = jobs_queue(NULL, 0, client_on_binary_job, binary);
- if (rc >= 0)
- return;
- free(binary);
- }
- }
- free(data);
+ queue_message_processing(protows, data, size, client_on_binary_job);
}
int afb_proto_ws_client_call(
static void server_on_binary(void *closure, char *data, size_t size)
{
- int rc;
- struct binary *binary;
+ struct afb_proto_ws *protows = closure;
- if (size) {
- binary = malloc(sizeof *binary);
- if (!binary) {
- errno = ENOMEM;
- } else {
- binary->protows = closure;
- binary->rb.base = data;
- binary->rb.head = data;
- binary->rb.end = data + size;
- rc = jobs_queue(NULL, 0, server_on_binary_job, binary);
- if (rc >= 0)
- return;
- free(binary);
- }
- }
- free(data);
+ queue_message_processing(protows, data, size, server_on_binary_job);
}
/******************* server part: manage events **********************************/
int rc;
if (writebuf_char(&wb, order)
- && (order == CHAR_FOR_EVT_BROADCAST || writebuf_uint32(&wb, event_id))
+ && writebuf_uint32(&wb, event_id)
&& writebuf_string(&wb, event_name)
- && (order == CHAR_FOR_EVT_ADD || order == CHAR_FOR_EVT_DEL || writebuf_object(&wb, data))) {
+ && (order != CHAR_FOR_EVT_PUSH || writebuf_object(&wb, data))) {
pthread_mutex_lock(&protows->mutex);
rc = afb_ws_binary_v(protows->ws, wb.iovec, wb.count);
pthread_mutex_unlock(&protows->mutex);
return server_event_send(protows, CHAR_FOR_EVT_PUSH, event_name, event_id, data);
}
-int afb_proto_ws_server_event_broadcast(struct afb_proto_ws *protows, const char *event_name, struct json_object *data)
+int afb_proto_ws_server_event_broadcast(struct afb_proto_ws *protows, const char *event_name, struct json_object *data, const unsigned char uuid[16], uint8_t hop)
{
- return server_event_send(protows, CHAR_FOR_EVT_BROADCAST, event_name, 0, data);
+ struct writebuf wb = { .count = 0 };
+ int rc;
+
+ if (!hop--)
+ return 0;
+
+ if (writebuf_char(&wb, CHAR_FOR_EVT_BROADCAST)
+ && writebuf_string(&wb, event_name)
+ && writebuf_object(&wb, data)
+ && writebuf_put(&wb, uuid, 16)
+ && writebuf_char(&wb, (char)hop)) {
+ pthread_mutex_lock(&protows->mutex);
+ rc = afb_ws_binary_v(protows->ws, wb.iovec, wb.count);
+ pthread_mutex_unlock(&protows->mutex);
+ if (rc >= 0)
+ return 0;
+ }
+ return -1;
}
/*****************************************************/
{
struct afb_proto_ws *protows = closure;
struct client_describe *cd, *ncd;
+ struct client_call *call, *ncall;
+
+ ncd = __atomic_exchange_n(&protows->describes, NULL, __ATOMIC_RELAXED);
+ ncall = __atomic_exchange_n(&protows->calls, NULL, __ATOMIC_RELAXED);
+
+ while (ncall) {
+ call= ncall;
+ ncall = call->next;
+ protows->client_itf->on_reply(protows->closure, call->request, NULL, "disconnected", "server hung up");
+ free(call);
+ }
- ncd = protows->describes;
while (ncd) {
cd= ncd;
ncd = cd->next;
void afb_proto_ws_unref(struct afb_proto_ws *protows)
{
- if (!__atomic_sub_fetch(&protows->refcount, 1, __ATOMIC_RELAXED)) {
+ if (protows && !__atomic_sub_fetch(&protows->refcount, 1, __ATOMIC_RELAXED)) {
afb_proto_ws_hangup(protows);
afb_ws_destroy(protows->ws);
pthread_mutex_destroy(&protows->mutex);
protows->on_hangup = on_hangup;
}
+void afb_proto_ws_set_queuing(struct afb_proto_ws *protows, int (*queuing)(struct afb_proto_ws*, void (*)(int,void*), void*))
+{
+ protows->queuing = queuing;
+}