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blob wants from JS -> C.

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git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@4106 ed5197a5-7fde-0310-b194-c3ffbd925b24
This commit is contained in:
Cory McWilliams 2023-01-05 00:52:23 +00:00
parent 4c01f23ee8
commit c09e043812
4 changed files with 290 additions and 94 deletions
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94
core/ssb.js
View File

@ -2,10 +2,7 @@
var g_wants_requests = {};
var g_database = new Database('core');
let g_attendants = {};
let g_blob_wants_sent = 0;
let g_blob_last_requested = '';
const k_use_create_history_stream = false;
const k_blobs_concurrent_target = 8;
function get_latest_sequence_for_author(author) {
var sequence = 0;
@ -48,72 +45,8 @@ function tunnel_attendants(request) {
});
}
function get_more_blobs(connection) {
while (Object.keys(connection.active_blob_gets).length < k_blobs_concurrent_target) {
let next = Object.keys(connection.blob_get_queue).pop();
let expected_bytes = connection.blob_get_queue[next];
if (!next) {
break;
}
delete connection.blob_get_queue[next];
connection.active_blob_gets[next] = true;
let received_bytes = 0;
let buffer = new Uint8Array(expected_bytes);
connection.send_json({'name': ['blobs', 'get'], 'type': 'source', 'args': [next]}, function(message) {
if (message.flags & 0x4 /* end */) {
delete connection.active_blob_gets[next];
} else {
buffer.set(new Uint8Array(message.message, 0, message.message.byteLength), received_bytes);
received_bytes += message.message.byteLength;
if (received_bytes == expected_bytes) {
ssb.blobStore(buffer);
delete connection.active_blob_gets[next];
get_more_blobs(connection);
}
}
});
}
}
function send_blobs_create_wants(connection) {
connection.send_json({'name': ['blobs', 'createWants'], 'type': 'source', 'args': []}, function on_blob_create_wants(message) {
if (message.message?.name === 'Error') {
return;
}
Object.keys(message.message).forEach(function(id) {
g_blob_wants_sent--;
if (g_blob_wants_sent == 0) {
request_more_blobs(g_wants_requests[connection.id]);
}
if (message.message[id] < 0) {
let blob;
if (g_wants_requests[connection.id]) {
blob = ssb.blobGet(id);
if (blob) {
let out_message = {};
out_message[id] = blob.byteLength;
g_wants_requests[connection.id].send_json(out_message);
}
}
if (!blob && message.message[id] == -1) {
let out_message = {};
out_message[id] = -2;
g_wants_requests[connection.id].send_json(out_message);
}
} else {
let expected_bytes = message.message[id];
connection.blob_get_queue[id] = expected_bytes;
get_more_blobs(connection);
}
});
});
}
ssb.addEventListener('connections', function on_connections_changed(change, connection) {
if (change == 'add') {
connection.active_blob_gets = {};
connection.blob_get_queue = {};
var sequence = get_latest_sequence_for_author(connection.id);
if (k_use_create_history_stream) {
connection.send_json({'name': ['createHistoryStream'], 'type': 'source', 'args': [{'id': connection.id, 'seq': sequence, 'live': true, 'keys': false}]}, storeMessage);
@ -137,7 +70,6 @@ ssb.addEventListener('connections', function on_connections_changed(change, conn
}
});
}
send_blobs_create_wants(connection);
}
} else if (change == 'remove') {
print('REMOVE', connection.id);
@ -149,32 +81,6 @@ ssb.addEventListener('connections', function on_connections_changed(change, conn
}
});
function blob_want_discovered(request, id) {
if (!request || !request.connection) {
return;
}
var message = {};
message[id] = -1;
g_blob_wants_sent++;
request.send_json(message);
}
function request_more_blobs(request) {
return ssb.sqlStream(
'SELECT id FROM blob_wants WHERE id > ? ORDER BY id LIMIT 32',
[g_blob_last_requested],
function(row) {
blob_want_discovered(request, row.id);
g_blob_last_requested = row.id;
});
}
ssb.addRpc(['blobs', 'createWants'], function(request) {
g_wants_requests[request.connection.id] = request;
ssb.addEventListener('blob_want_added', id => blob_want_discovered(request, id));
request_more_blobs(request);
});
function notify_attendant_changed(id, type) {
if (!id) {
print(`notify_attendant_changed called with id=${id}`);

7
src/ssb.c
View File

@ -198,6 +198,8 @@ typedef struct _tf_ssb_connection_t
tf_ssb_connection_t* tunnel_connection;
int32_t tunnel_request_number;
tf_ssb_blob_wants_t blob_wants;
JSValue object;
char name[32];
@ -2926,3 +2928,8 @@ void tf_ssb_connection_remove_room_attendant(tf_ssb_connection_t* connection, co
_tf_ssb_notify_broadcasts_changed(connection->ssb);
}
}
tf_ssb_blob_wants_t* tf_ssb_connection_get_blob_wants_state(tf_ssb_connection_t* connection)
{
return connection ? &connection->blob_wants : NULL;
}

9
src/ssb.h
View File

@ -57,6 +57,13 @@ typedef struct _tf_ssb_stats_t
} callbacks;
} tf_ssb_stats_t;
typedef struct _tf_ssb_blob_wants_t
{
int32_t request_number;
char last_id[k_blob_id_len];
int wants_sent;
} tf_ssb_blob_wants_t;
tf_ssb_t* tf_ssb_create(uv_loop_t* loop, JSContext* context, sqlite3* db);
void tf_ssb_destroy(tf_ssb_t* ssb);
@ -146,3 +153,5 @@ tf_ssb_connection_t* tf_ssb_connection_tunnel_create(tf_ssb_t* ssb, const char*
JSClassID tf_ssb_get_connection_class_id();
void tf_ssb_get_stats(tf_ssb_t* ssb, tf_ssb_stats_t* out_stats);
tf_ssb_blob_wants_t* tf_ssb_connection_get_blob_wants_state(tf_ssb_connection_t* connection);

274
src/ssb.rpc.c
View File

@ -105,6 +105,62 @@ static void _tf_ssb_rpc_blobs_has(tf_ssb_connection_t* connection, uint8_t flags
NULL);
}
static void _tf_ssb_rpc_blob_wants_added_callback(tf_ssb_t* ssb, const char* id, void* user_data)
{
tf_ssb_connection_t* connection = user_data;
tf_ssb_blob_wants_t* blob_wants = tf_ssb_connection_get_blob_wants_state(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue message = JS_NewObject(context);
JS_SetPropertyStr(context, message, id, JS_NewInt64(context, -1));
JSValue json = JS_JSONStringify(context, message, JS_NULL, JS_NULL);
size_t size = 0;
const char* message_str = JS_ToCStringLen(context, &size, json);
tf_ssb_connection_rpc_send(connection, k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream, -blob_wants->request_number, (const uint8_t*)message_str, size, NULL, NULL, NULL);
JS_FreeCString(context, message_str);
JS_FreeValue(context, json);
JS_FreeValue(context, message);
}
static void _tf_ssb_rpc_request_more_blobs(tf_ssb_connection_t* connection)
{
JSContext* context = tf_ssb_connection_get_context(connection);
tf_ssb_blob_wants_t* blob_wants = tf_ssb_connection_get_blob_wants_state(connection);
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
sqlite3* db = tf_ssb_get_db(ssb);
sqlite3_stmt* statement;
if (sqlite3_prepare(db, "SELECT id FROM blob_wants WHERE id > ? ORDER BY id LIMIT 32", -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_bind_text(statement, 1, blob_wants->last_id, -1, NULL) == SQLITE_OK)
{
while (sqlite3_step(statement) == SQLITE_ROW)
{
const char* blob = (const char*)sqlite3_column_text(statement, 0);
JSValue message = JS_NewObject(context);
JS_SetPropertyStr(context, message, blob, JS_NewInt32(context, -1));
JSValue json = JS_JSONStringify(context, message, JS_NULL, JS_NULL);
size_t size = 0;
const char* message_str = JS_ToCStringLen(context, &size, json);
tf_ssb_connection_rpc_send(connection, k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream, -blob_wants->request_number, (const uint8_t*)message_str, size, NULL, NULL, NULL);
JS_FreeCString(context, message_str);
JS_FreeValue(context, json);
JS_FreeValue(context, message);
snprintf(blob_wants->last_id, sizeof(blob_wants->last_id), "%s", blob);
blob_wants->wants_sent++;
}
}
sqlite3_finalize(statement);
}
}
static void _tf_ssb_rpc_blobs_createWants(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_blob_wants_t* blob_wants = tf_ssb_connection_get_blob_wants_state(connection);
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
tf_ssb_add_blob_want_added_callback(ssb, _tf_ssb_rpc_blob_wants_added_callback, NULL, connection);
blob_wants->request_number = request_number;
_tf_ssb_rpc_request_more_blobs(connection);
}
typedef struct tunnel_t
{
tf_ssb_connection_t* connection;
@ -270,11 +326,229 @@ static void _tf_ssb_rpc_tunnel_is_room(tf_ssb_connection_t* connection, uint8_t
JS_FreeValue(context, response);
}
typedef struct _blobs_get_t
{
char id[k_blob_id_len];
size_t received;
size_t expected_size;
char buffer[];
} blobs_get_t;
static void _tf_ssb_rpc_connection_blobs_get_callback(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
blobs_get_t* get = user_data;
if ((flags & k_ssb_rpc_mask_type) == k_ssb_rpc_flag_binary && size > 0 && get->received + size <= get->expected_size)
{
memcpy(get->buffer + get->received, message, size);
get->received += size;
}
else if ((flags & k_ssb_rpc_mask_type) == k_ssb_rpc_flag_json)
{
bool stored = false;
if (JS_ToBool(context, args))
{
char id[256];
stored = tf_ssb_db_blob_store(ssb, (uint8_t*)get->buffer, get->expected_size, id, sizeof(id), NULL);
}
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream | k_ssb_rpc_flag_end_error,
-request_number,
(const uint8_t*)(stored ? "true" : "false"),
strlen(stored ? "true" : "false"),
NULL,
NULL,
NULL);
}
}
static void _tf_ssb_rpc_connection_blobs_get_cleanup(tf_ssb_t* ssb, void* user_data)
{
tf_free(user_data);
}
static void _tf_ssb_rpc_connection_blobs_get(tf_ssb_connection_t* connection, const char* blob_id, size_t size)
{
blobs_get_t* get = tf_malloc(sizeof(blobs_get_t) + size);
*get = (blobs_get_t) { .expected_size = size };
snprintf(get->id, sizeof(get->id), "%s", blob_id);
memset(get->buffer, 0, size);
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_get_context(ssb);
JSValue message = JS_NewObject(context);
JSValue name = JS_NewArray(context);
JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "blobs"));
JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "get"));
JS_SetPropertyStr(context, message, "name", name);
JS_SetPropertyStr(context, message, "type", JS_NewString(context, "source"));
JSValue args = JS_NewArray(context);
JS_SetPropertyUint32(context, args, 0, JS_NewString(context, blob_id));
JS_SetPropertyStr(context, message, "args", args);
JSValue message_val = JS_JSONStringify(context, message, JS_NULL, JS_NULL);
size_t message_size;
const char* message_str = JS_ToCStringLen(context, &message_size, message_val);
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream,
tf_ssb_connection_next_request_number(connection),
(const uint8_t*)message_str,
message_size,
_tf_ssb_rpc_connection_blobs_get_callback,
_tf_ssb_rpc_connection_blobs_get_cleanup,
get);
JS_FreeCString(context, message_str);
JS_FreeValue(context, message);
}
static void _tf_ssb_rpc_connection_blobs_createWants_callback(tf_ssb_connection_t* connection, uint8_t flags, int32_t request_number, JSValue args, const uint8_t* message, size_t size, void* user_data)
{
tf_ssb_blob_wants_t* blob_wants = tf_ssb_connection_get_blob_wants_state(connection);
if (!blob_wants)
{
return;
}
tf_ssb_t* ssb = tf_ssb_connection_get_ssb(connection);
JSContext* context = tf_ssb_connection_get_context(connection);
JSValue name = JS_GetPropertyStr(context, args, "name");
if (!JS_IsUndefined(name))
{
/* { name: "Error" } */
JS_FreeValue(context, name);
return;
}
JSPropertyEnum* ptab;
uint32_t plen;
JS_GetOwnPropertyNames(context, &ptab, &plen, args, JS_GPN_STRING_MASK);
for (uint32_t i = 0; i < plen; ++i)
{
JSValue key = JS_AtomToString(context, ptab[i].atom);
JSPropertyDescriptor desc;
JSValue key_value = JS_NULL;
if (JS_GetOwnProperty(context, &desc, args, ptab[i].atom) == 1)
{
key_value = desc.value;
JS_FreeValue(context, desc.setter);
JS_FreeValue(context, desc.getter);
}
const char* blob_id = JS_ToCString(context, key);
int64_t size = 0;
JS_ToInt64(context, &size, key_value);
if (--blob_wants->wants_sent == 0)
{
_tf_ssb_rpc_request_more_blobs(connection);
}
if (size < 0)
{
size_t blob_size = 0;
if (tf_ssb_db_blob_get(ssb, blob_id, NULL, &blob_size))
{
JSValue message = JS_NewObject(context);
JS_SetPropertyStr(context, message, blob_id, JS_NewInt64(context, blob_size));
JSValue message_val = JS_JSONStringify(context, message, JS_NULL, JS_NULL);
size_t message_size;
const char* message_str = JS_ToCStringLen(context, &message_size, message_val);
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream,
-blob_wants->request_number,
(const uint8_t*)message_str,
message_size,
NULL,
NULL,
NULL);
JS_FreeCString(context, message_str);
JS_FreeValue(context, message);
}
else if (size == -1LL)
{
JSValue message = JS_NewObject(context);
JS_SetPropertyStr(context, message, blob_id, JS_NewInt64(context, -2));
JSValue message_val = JS_JSONStringify(context, message, JS_NULL, JS_NULL);
size_t message_size;
const char* message_str = JS_ToCStringLen(context, &message_size, message_val);
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream,
-blob_wants->request_number,
(const uint8_t*)message_str,
message_size,
NULL,
NULL,
NULL);
JS_FreeCString(context, message_str);
JS_FreeValue(context, message);
}
}
else
{
_tf_ssb_rpc_connection_blobs_get(connection, blob_id, size);
}
JS_FreeCString(context, blob_id);
JS_FreeValue(context, key);
JS_FreeValue(context, key_value);
}
for (uint32_t i = 0; i < plen; ++i)
{
JS_FreeAtom(context, ptab[i].atom);
}
js_free(context, ptab);
}
static void _tf_ssb_rpc_connections_changed_callback(tf_ssb_t* ssb, tf_ssb_change_t change, tf_ssb_connection_t* connection, void* user_data)
{
if (change == k_tf_ssb_change_connect)
{
JSContext* context = tf_ssb_get_context(ssb);
JSValue message = JS_NewObject(context);
JSValue name = JS_NewArray(context);
JS_SetPropertyUint32(context, name, 0, JS_NewString(context, "blobs"));
JS_SetPropertyUint32(context, name, 1, JS_NewString(context, "createWants"));
JS_SetPropertyStr(context, message, "name", name);
JS_SetPropertyStr(context, message, "type", JS_NewString(context, "source"));
JS_SetPropertyStr(context, message, "args", JS_NewArray(context));
JSValue message_val = JS_JSONStringify(context, message, JS_NULL, JS_NULL);
size_t size;
const char* message_str = JS_ToCStringLen(context, &size, message_val);
tf_ssb_connection_rpc_send(
connection,
k_ssb_rpc_flag_json | k_ssb_rpc_flag_stream,
tf_ssb_connection_next_request_number(connection),
(const uint8_t*)message_str,
size,
_tf_ssb_rpc_connection_blobs_createWants_callback,
NULL,
NULL);
JS_FreeCString(context, message_str);
JS_FreeValue(context, message_val);
JS_FreeValue(context, message);
}
else if (change == k_tf_ssb_change_remove)
{
tf_ssb_remove_blob_want_added_callback(ssb, _tf_ssb_rpc_blob_wants_added_callback, connection);
}
}
void tf_ssb_rpc_register(tf_ssb_t* ssb)
{
tf_ssb_add_connections_changed_callback(ssb, _tf_ssb_rpc_connections_changed_callback, NULL, NULL);
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "gossip", "ping", NULL }, _tf_ssb_rpc_gossip_ping, NULL, NULL);
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "blobs", "get", NULL }, _tf_ssb_rpc_blobs_get, NULL, NULL);
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "blobs", "has", NULL }, _tf_ssb_rpc_blobs_has, NULL, NULL);
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "blobs", "createWants", NULL }, _tf_ssb_rpc_blobs_createWants, NULL, NULL);
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "tunnel", "connect", NULL }, _tf_ssb_rpc_tunnel_connect, NULL, NULL);
tf_ssb_add_rpc_callback(ssb, (const char*[]) { "tunnel", "isRoom", NULL }, _tf_ssb_rpc_tunnel_is_room, NULL, NULL);
}