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Add channel to pub/sub

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This commit is contained in:
Ryan Dahl 2018-06-11 21:57:25 +02:00
parent 997b300745
commit 7242f2b5a5
4 changed files with 32 additions and 26 deletions
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26
deno2/deno.cc
View file

@ -133,16 +133,22 @@ void Pub(const v8::FunctionCallbackInfo<v8::Value>& args) {
v8::Locker locker(d->isolate);
v8::EscapableHandleScope handle_scope(isolate);
v8::Local<v8::Value> v = args[0];
assert(v->IsArrayBuffer());
assert(args.Length() == 2);
v8::Local<v8::Value> channel_v = args[0];
assert(channel_v->IsString());
v8::String::Utf8Value channel_vstr(isolate, channel_v);
const char* channel = *channel_vstr;
auto ab = v8::Local<v8::ArrayBuffer>::Cast(v);
v8::Local<v8::Value> ab_v = args[1];
assert(ab_v->IsArrayBuffer());
auto ab = v8::Local<v8::ArrayBuffer>::Cast(ab_v);
auto contents = ab->GetContents();
void* buf = contents.Data();
int buflen = static_cast<int>(contents.ByteLength());
auto retbuf = d->cb(d, deno_buf{buf, buflen});
auto retbuf = d->cb(d, channel, deno_buf{buf, buflen});
if (retbuf.data) {
// TODO(ry) Support zero-copy.
auto ab = v8::ArrayBuffer::New(d->isolate, retbuf.len);
@ -270,10 +276,7 @@ bool deno_execute(Deno* d, const char* js_filename, const char* js_source) {
return deno::Execute(context, js_filename, js_source);
}
// Routes message to the javascript callback set with deno_sub().
// False return value indicates error. Check deno_last_exception() for exception
// text. Caller owns buf.
bool deno_pub(Deno* d, deno_buf buf) {
bool deno_pub(Deno* d, const char* channel, deno_buf buf) {
v8::Locker locker(d->isolate);
v8::Isolate::Scope isolate_scope(d->isolate);
v8::HandleScope handle_scope(d->isolate);
@ -293,10 +296,9 @@ bool deno_pub(Deno* d, deno_buf buf) {
auto ab = v8::ArrayBuffer::New(d->isolate, buf.len);
memcpy(ab->GetContents().Data(), buf.data, buf.len);
v8::Local<v8::Value> args[1];
args[0] = ab;
assert(!args[0].IsEmpty());
assert(!try_catch.HasCaught());
v8::Local<v8::Value> args[2];
args[0] = deno::v8_str(channel);
args[1] = ab;
sub->Call(context->Global(), 1, args);

8
deno2/include/deno.h
View file

@ -18,7 +18,7 @@ struct deno_s;
typedef struct deno_s Deno;
// The callback from V8 when data is sent.
typedef deno_buf (*deno_sub_cb)(Deno* d, deno_buf buf);
typedef deno_buf (*deno_sub_cb)(Deno* d, const char* channel, deno_buf buf);
void deno_init();
const char* deno_v8_version();
@ -31,9 +31,9 @@ Deno* deno_new(void* data, deno_sub_cb cb);
// Get error text with deno_last_exception().
bool deno_execute(Deno* d, const char* js_filename, const char* js_source);
// Returns false on error.
// Get error text with deno_last_exception().
bool deno_pub(Deno* d, deno_buf buf);
// Routes message to the javascript callback set with deno_sub(). A false return
// value indicates error. Check deno_last_exception() for exception text.
bool deno_pub(Deno* d, const char* channel, deno_buf buf);
const char* deno_last_exception(Deno* d);

12
deno2/js/mock_runtime.js
View file

@ -16,13 +16,15 @@ function CanCallFunction() {
}
function PubSuccess() {
deno_sub(msg => {
deno_sub((channel, msg) => {
assert(channel === "PubSuccess");
deno_print("PubSuccess: ok");
});
}
function PubByteLength() {
deno_sub(msg => {
deno_sub((channel, msg) => {
assert(channel === "PubByteLength");
assert(msg instanceof ArrayBuffer);
assert(msg.byteLength === 3);
});
@ -31,16 +33,16 @@ function PubByteLength() {
function SubReturnEmpty() {
const ui8 = new Uint8Array("abc".split("").map(c => c.charCodeAt(0)));
const ab = typedArrayToArrayBuffer(ui8);
let r = deno_pub(ab);
let r = deno_pub("SubReturnEmpty", ab);
assert(r == null);
r = deno_pub(ab);
r = deno_pub("SubReturnEmpty", ab);
assert(r == null);
}
function SubReturnBar() {
const ui8 = new Uint8Array("abc".split("").map(c => c.charCodeAt(0)));
const ab = typedArrayToArrayBuffer(ui8);
const r = deno_pub(ab);
const r = deno_pub("SubReturnBar", ab);
assert(r instanceof ArrayBuffer);
assert(r.byteLength === 3);
const rui8 = new Uint8Array(r);

12
deno2/mock_runtime_test.cc
View file

@ -31,7 +31,7 @@ deno_buf strbuf(const char* str) {
TEST(MockRuntimeTest, PubSuccess) {
Deno* d = deno_new(NULL, NULL);
EXPECT_TRUE(deno_execute(d, "a.js", "PubSuccess()"));
EXPECT_TRUE(deno_pub(d, strbuf("abc")));
EXPECT_TRUE(deno_pub(d, "PubSuccess", strbuf("abc")));
deno_dispose(d);
}
@ -39,21 +39,22 @@ TEST(MockRuntimeTest, PubByteLength) {
Deno* d = deno_new(NULL, NULL);
EXPECT_TRUE(deno_execute(d, "a.js", "PubByteLength()"));
// We pub the wrong sized message, it should throw.
EXPECT_FALSE(deno_pub(d, strbuf("abcd")));
EXPECT_FALSE(deno_pub(d, "PubByteLength", strbuf("abcd")));
deno_dispose(d);
}
TEST(MockRuntimeTest, PubNoCallback) {
Deno* d = deno_new(NULL, NULL);
// We didn't call deno_sub(), pubing should fail.
EXPECT_FALSE(deno_pub(d, strbuf("abc")));
EXPECT_FALSE(deno_pub(d, "PubNoCallback", strbuf("abc")));
deno_dispose(d);
}
TEST(MockRuntimeTest, SubReturnEmpty) {
static int count = 0;
Deno* d = deno_new(NULL, [](Deno* _, deno_buf buf) {
Deno* d = deno_new(NULL, [](auto _, auto channel, auto buf) {
count++;
EXPECT_STREQ(channel, "SubReturnEmpty");
EXPECT_EQ(static_cast<size_t>(3), buf.len);
// TODO(ry) buf.data should just be a char*.
char* data = reinterpret_cast<char*>(buf.data);
@ -69,8 +70,9 @@ TEST(MockRuntimeTest, SubReturnEmpty) {
TEST(MockRuntimeTest, SubReturnBar) {
static int count = 0;
Deno* d = deno_new(NULL, [](Deno* _, deno_buf buf) {
Deno* d = deno_new(NULL, [](auto _, auto channel, auto buf) {
count++;
EXPECT_STREQ(channel, "SubReturnBar");
EXPECT_EQ(static_cast<size_t>(3), buf.len);
// TODO(ry) buf.data should just be a char*.
char* data = reinterpret_cast<char*>(buf.data);