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freeswitch/libs/libblade/src/blade_stack.c

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/*
* Copyright (c) 2007-2014, Anthony Minessale II
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of the original author; nor the names of any contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "blade.h"
struct blade_handle_s {
ks_thread_pool_t *tpool;
blade_transportmgr_t *transportmgr;
blade_rpcmgr_t *rpcmgr;
blade_routemgr_t *routemgr;
blade_subscriptionmgr_t *subscriptionmgr;
blade_mastermgr_t *mastermgr;
blade_connectionmgr_t *connectionmgr;
blade_sessionmgr_t *sessionmgr;
blade_restmgr_t *restmgr;
};
ks_bool_t blade_rpcroute_request_handler(blade_rpc_request_t *brpcreq, void *data);
ks_bool_t blade_rpcregister_request_handler(blade_rpc_request_t *brpcreq, void *data);
ks_bool_t blade_rpcregister_response_handler(blade_rpc_response_t *brpcres, void *data);
ks_bool_t blade_rpcpublish_request_handler(blade_rpc_request_t *brpcreq, void *data);
ks_bool_t blade_rpcauthorize_request_handler(blade_rpc_request_t *brpcreq, void *data);
ks_bool_t blade_rpclocate_request_handler(blade_rpc_request_t *brpcreq, void *data);
ks_bool_t blade_rpcexecute_request_handler(blade_rpc_request_t *brpcreq, void *data);
ks_bool_t blade_rpcsubscribe_request_handler(blade_rpc_request_t *brpcreq, void *data);
ks_bool_t blade_rpcsubscribe_response_handler(blade_rpc_response_t *brpcres, void *data);
ks_bool_t blade_rpcbroadcast_request_handler(blade_rpc_request_t *brpcreq, void *data);
static void blade_handle_cleanup(void *ptr, void *arg, ks_pool_cleanup_action_t action, ks_pool_cleanup_type_t type)
{
blade_handle_t *bh = (blade_handle_t *)ptr;
ks_assert(bh);
switch (action) {
case KS_MPCL_ANNOUNCE:
break;
case KS_MPCL_TEARDOWN:
blade_transportmgr_destroy(&bh->transportmgr);
blade_rpcmgr_destroy(&bh->rpcmgr);
blade_routemgr_destroy(&bh->routemgr);
blade_subscriptionmgr_destroy(&bh->subscriptionmgr);
blade_mastermgr_destroy(&bh->mastermgr);
blade_connectionmgr_destroy(&bh->connectionmgr);
blade_sessionmgr_destroy(&bh->sessionmgr);
blade_restmgr_destroy(&bh->restmgr);
ks_thread_pool_destroy(&bh->tpool);
break;
case KS_MPCL_DESTROY:
break;
}
}
KS_DECLARE(ks_status_t) blade_handle_create(blade_handle_t **bhP)
{
blade_handle_t *bh = NULL;
ks_pool_t *pool = NULL;
ks_thread_pool_t *tpool = NULL;
ks_assert(bhP);
ks_pool_open(&pool);
ks_assert(pool);
ks_thread_pool_create(&tpool, BLADE_HANDLE_TPOOL_MIN, BLADE_HANDLE_TPOOL_MAX, BLADE_HANDLE_TPOOL_STACK, KS_PRI_NORMAL, BLADE_HANDLE_TPOOL_IDLE);
ks_assert(tpool);
bh = ks_pool_alloc(pool, sizeof(blade_handle_t));
bh->tpool = tpool;
blade_transportmgr_create(&bh->transportmgr, bh);
ks_assert(bh->transportmgr);
blade_rpcmgr_create(&bh->rpcmgr, bh);
ks_assert(bh->rpcmgr);
blade_routemgr_create(&bh->routemgr, bh);
ks_assert(bh->routemgr);
blade_subscriptionmgr_create(&bh->subscriptionmgr, bh);
ks_assert(bh->subscriptionmgr);
blade_mastermgr_create(&bh->mastermgr, bh);
ks_assert(bh->mastermgr);
blade_connectionmgr_create(&bh->connectionmgr, bh);
ks_assert(bh->connectionmgr);
blade_sessionmgr_create(&bh->sessionmgr, bh);
ks_assert(bh->sessionmgr);
blade_restmgr_create(&bh->restmgr, bh);
ks_assert(bh->restmgr);
ks_pool_set_cleanup(bh, NULL, blade_handle_cleanup);
*bhP = bh;
ks_log(KS_LOG_DEBUG, "Created\n");
return KS_STATUS_SUCCESS;
}
KS_DECLARE(ks_status_t) blade_handle_destroy(blade_handle_t **bhP)
{
blade_handle_t *bh = NULL;
ks_pool_t *pool;
ks_assert(bhP);
ks_assert(*bhP);
bh = *bhP;
*bhP = NULL;
// shutdown cannot happen inside of the cleanup callback because it'll lock a mutex for the pool during cleanup callbacks which connections and sessions need to finish their cleanup
// and more importantly, memory needs to remain intact until shutdown is completed to avoid various things hitting teardown before shutdown runs
blade_handle_shutdown(bh);
pool = ks_pool_get(bh);
ks_pool_close(&pool);
return KS_STATUS_SUCCESS;
}
ks_status_t blade_handle_config(blade_handle_t *bh, config_setting_t *config)
{
ks_assert(bh);
if (!config) return KS_STATUS_FAIL;
if (!config_setting_is_group(config)) {
ks_log(KS_LOG_DEBUG, "!config_setting_is_group(config)\n");
return KS_STATUS_FAIL;
}
return KS_STATUS_SUCCESS;
}
KS_DECLARE(ks_status_t) blade_handle_startup(blade_handle_t *bh, config_setting_t *config)
{
blade_rpc_t *brpc = NULL;
blade_transport_t *bt = NULL;
ks_assert(bh);
if (blade_handle_config(bh, config) != KS_STATUS_SUCCESS) {
ks_log(KS_LOG_DEBUG, "blade_handle_config failed\n");
return KS_STATUS_FAIL;
}
// internal transport for secure websockets
blade_transport_wss_create(&bt, bh);
ks_assert(bt);
blade_transportmgr_default_set(bh->transportmgr, bt);
blade_transportmgr_transport_add(bh->transportmgr, bt);
// internal core rpcs for blade.xxx
blade_rpc_create(&brpc, bh, "blade.route", NULL, blade_rpcroute_request_handler, NULL);
blade_rpcmgr_corerpc_add(bh->rpcmgr, brpc);
blade_rpc_create(&brpc, bh, "blade.register", NULL, blade_rpcregister_request_handler, NULL);
blade_rpcmgr_corerpc_add(bh->rpcmgr, brpc);
blade_rpc_create(&brpc, bh, "blade.publish", NULL, blade_rpcpublish_request_handler, NULL);
blade_rpcmgr_corerpc_add(bh->rpcmgr, brpc);
blade_rpc_create(&brpc, bh, "blade.authorize", NULL, blade_rpcauthorize_request_handler, NULL);
blade_rpcmgr_corerpc_add(bh->rpcmgr, brpc);
blade_rpc_create(&brpc, bh, "blade.locate", NULL, blade_rpclocate_request_handler, NULL);
blade_rpcmgr_corerpc_add(bh->rpcmgr, brpc);
blade_rpc_create(&brpc, bh, "blade.execute", NULL, blade_rpcexecute_request_handler, NULL);
blade_rpcmgr_corerpc_add(bh->rpcmgr, brpc);
blade_rpc_create(&brpc, bh, "blade.subscribe", NULL, blade_rpcsubscribe_request_handler, NULL);
blade_rpcmgr_corerpc_add(bh->rpcmgr, brpc);
blade_rpc_create(&brpc, bh, "blade.broadcast", NULL, blade_rpcbroadcast_request_handler, NULL);
blade_rpcmgr_corerpc_add(bh->rpcmgr, brpc);
blade_transportmgr_startup(bh->transportmgr, config);
blade_sessionmgr_startup(bh->sessionmgr, config);
blade_mastermgr_startup(bh->mastermgr, config);
blade_restmgr_startup(bh->restmgr, config);
return KS_STATUS_SUCCESS;
}
KS_DECLARE(ks_status_t) blade_handle_shutdown(blade_handle_t *bh)
{
ks_assert(bh);
blade_mastermgr_shutdown(bh->mastermgr);
blade_transportmgr_shutdown(bh->transportmgr);
blade_connectionmgr_shutdown(bh->connectionmgr);
blade_sessionmgr_shutdown(bh->sessionmgr);
blade_restmgr_shutdown(bh->restmgr);
return KS_STATUS_SUCCESS;
}
KS_DECLARE(ks_thread_pool_t *) blade_handle_tpool_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->tpool;
}
KS_DECLARE(blade_transportmgr_t *) blade_handle_transportmgr_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->transportmgr;
}
KS_DECLARE(blade_rpcmgr_t *) blade_handle_rpcmgr_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->rpcmgr;
}
KS_DECLARE(blade_routemgr_t *) blade_handle_routemgr_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->routemgr;
}
KS_DECLARE(blade_subscriptionmgr_t *) blade_handle_subscriptionmgr_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->subscriptionmgr;
}
KS_DECLARE(blade_mastermgr_t *) blade_handle_mastermgr_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->mastermgr;
}
KS_DECLARE(blade_connectionmgr_t *) blade_handle_connectionmgr_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->connectionmgr;
}
KS_DECLARE(blade_sessionmgr_t *) blade_handle_sessionmgr_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->sessionmgr;
}
KS_DECLARE(blade_restmgr_t *) blade_handle_restmgr_get(blade_handle_t *bh)
{
ks_assert(bh);
return bh->restmgr;
}
KS_DECLARE(ks_status_t) blade_handle_connect(blade_handle_t *bh, blade_connection_t **bcP, blade_identity_t *target, const char *session_id)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
blade_transport_t *bt = NULL;
blade_transport_callbacks_t *callbacks = NULL;
ks_assert(bh);
ks_assert(target);
// @todo mini state machine to deal with upstream establishment to avoid attempting multiple upstream connects at the same time?
if ((bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
blade_session_read_unlock(bs);
return KS_STATUS_DUPLICATE_OPERATION;
}
bt = blade_transportmgr_transport_lookup(bh->transportmgr, blade_identity_parameter_lookup(target, "transport"), KS_TRUE);
ks_assert(bt);
callbacks = blade_transport_callbacks_get(bt);
ks_assert(callbacks);
if (callbacks->onconnect) ret = callbacks->onconnect(bcP, bt, target, session_id);
return ret;
}
// BLADE PROTOCOL HANDLERS
// @todo revisit all error sending. JSONRPC "error" should only be used for missing and invalid parameter errors, change the rest to internal errors for each of the corerpcs
// @todo all higher level errors should be handled by each of the calls internally so that a normal result response can be sent with an error block inside the result
// which is important for implementation of blade.execute where errors can be relayed back to the requester properly
typedef struct blade_rpcregister_data_s blade_rpcregister_data_t;
struct blade_rpcregister_data_s {
blade_rpc_response_callback_t original_callback;
void *original_data;
const char *original_requestid;
};
typedef struct blade_rpcsubscribe_data_s blade_rpcsubscribe_data_t;
struct blade_rpcsubscribe_data_s {
blade_rpc_response_callback_t original_callback;
void *original_data;
const char *original_requestid;
blade_rpc_request_callback_t channel_callback;
void *channel_data;
};
ks_status_t blade_handle_rpcregister_raw(blade_handle_t *bh, const char *identity, const char *nodeid, blade_rpc_response_callback_t callback, blade_rpcregister_data_t *data);
ks_status_t blade_handle_rpcsubscribe_raw(blade_handle_t *bh, blade_rpcsubscribe_command_t command, const char *protocol, cJSON *channels, const char *subscriber, ks_bool_t downstream, blade_rpc_response_callback_t callback, blade_rpcsubscribe_data_t *data);
// blade.route request generator
KS_DECLARE(ks_status_t) blade_handle_rpcroute(blade_handle_t *bh, const char *nodeid, ks_bool_t remove, blade_rpc_response_callback_t callback, void *data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
ks_pool_t *pool = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
ks_assert(bh);
ks_assert(nodeid);
if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
pool = ks_pool_get(bh);
ks_assert(pool);
blade_rpc_request_raw_create(pool, &req, &req_params, NULL, "blade.route");
// fill in the req_params
cJSON_AddStringToObject(req_params, "nodeid", nodeid);
if (remove) cJSON_AddTrueToObject(req_params, "remove");
ks_log(KS_LOG_DEBUG, "Session (%s) route request (%s %s) started\n", blade_session_id_get(bs), remove ? "removing" : "adding", nodeid);
ret = blade_session_send(bs, req, 0, callback, data);
done:
if (req) cJSON_Delete(req);
if (bs) blade_session_read_unlock(bs);
return ret;
}
// blade.route request handler
ks_bool_t blade_rpcroute_request_handler(blade_rpc_request_t *brpcreq, void *data)
{
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_params_nodeid = NULL;
cJSON *req_params_remove = NULL;
ks_bool_t remove = KS_FALSE;
cJSON *res = NULL;
cJSON *res_result = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(bh->sessionmgr, blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (!req_params) {
ks_log(KS_LOG_DEBUG, "Session (%s) route request missing 'params' object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params object");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_nodeid = cJSON_GetObjectCstr(req_params, "nodeid");
if (!req_params_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) route request missing 'nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_remove = cJSON_GetObjectItem(req_params, "remove");
remove = req_params_remove && req_params_remove->type == cJSON_True;
ks_log(KS_LOG_DEBUG, "Session (%s) route request (%s %s) processing\n", blade_session_id_get(bs), remove ? "removing" : "adding", req_params_nodeid);
if (remove) {
blade_session_route_remove(bs, req_params_nodeid);
blade_routemgr_route_remove(blade_handle_routemgr_get(bh), req_params_nodeid);
} else {
blade_session_route_add(bs, req_params_nodeid);
blade_routemgr_route_add(blade_handle_routemgr_get(bh), req_params_nodeid, blade_session_id_get(bs));
}
blade_rpc_response_raw_create(&res, &res_result, blade_rpc_request_messageid_get(brpcreq));
blade_session_send(bs, res, 0, NULL, NULL);
done:
if (res) cJSON_Delete(res);
if (bs) blade_session_read_unlock(bs);
return KS_FALSE;
}
static void blade_rpcregister_data_cleanup(void *ptr, void *arg, ks_pool_cleanup_action_t action, ks_pool_cleanup_type_t type)
{
blade_rpcregister_data_t *brpcrd = (blade_rpcregister_data_t *)ptr;
ks_assert(brpcrd);
switch (action) {
case KS_MPCL_ANNOUNCE:
break;
case KS_MPCL_TEARDOWN:
if (brpcrd->original_requestid) ks_pool_free(&brpcrd->original_requestid);
break;
case KS_MPCL_DESTROY:
break;
}
}
// blade.register request generator
KS_DECLARE(ks_status_t) blade_handle_rpcregister(blade_handle_t *bh, const char *identity, blade_rpc_response_callback_t callback, void *data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
const char *localid = NULL;
blade_rpcregister_data_t *temp_data = NULL;
ks_assert(bh);
ks_assert(identity);
if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
temp_data = (blade_rpcregister_data_t *)ks_pool_alloc(ks_pool_get(bh), sizeof(blade_rpcregister_data_t));
temp_data->original_callback = callback;
temp_data->original_data = data;
ks_pool_set_cleanup(temp_data, NULL, blade_rpcregister_data_cleanup);
blade_routemgr_local_copy(bh->routemgr, &localid);
ret = blade_handle_rpcregister_raw(bh, identity, localid, blade_rpcregister_response_handler, temp_data);
ks_pool_free(&localid);
ks_log(KS_LOG_DEBUG, "Session (%s) register request (%s) started\n", blade_session_id_get(bs), identity);
done:
if (bs) blade_session_read_unlock(bs);
return ret;
}
ks_status_t blade_handle_rpcregister_raw(blade_handle_t *bh, const char *identity, const char *nodeid, blade_rpc_response_callback_t callback, blade_rpcregister_data_t *data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
ks_pool_t *pool = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
ks_assert(bh);
ks_assert(identity);
if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
pool = ks_pool_get(bh);
ks_assert(pool);
blade_rpc_request_raw_create(pool, &req, &req_params, NULL, "blade.register");
// fill in the req_params
cJSON_AddStringToObject(req_params, "identity", identity);
cJSON_AddStringToObject(req_params, "nodeid", nodeid);
ret = blade_session_send(bs, req, 0, callback, data);
done:
if (req) cJSON_Delete(req);
if (bs) blade_session_read_unlock(bs);
return ret;
}
// blade.register request handler
ks_bool_t blade_rpcregister_request_handler(blade_rpc_request_t *brpcreq, void *data)
{
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
ks_pool_t *pool = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_params_identity = NULL;
const char *req_params_nodeid = NULL;
cJSON *res = NULL;
cJSON *res_result = NULL;
blade_identity_t *identity = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
pool = ks_pool_get(bh);
ks_assert(pool);
bs = blade_sessionmgr_session_lookup(blade_handle_sessionmgr_get(bh), blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (!req_params) {
ks_log(KS_LOG_DEBUG, "Session (%s) register request missing 'params' object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params object");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_identity = cJSON_GetObjectCstr(req_params, "identity");
if (!req_params_identity) {
ks_log(KS_LOG_DEBUG, "Session (%s) register request missing 'identity'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params identity");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
blade_identity_create(&identity, pool);
if (blade_identity_parse(identity, req_params_identity) != KS_STATUS_SUCCESS) {
ks_log(KS_LOG_DEBUG, "Session (%s) register request invalid 'identity'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params identity");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_nodeid = cJSON_GetObjectCstr(req_params, "nodeid");
if (!req_params_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) register request missing 'nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
ks_log(KS_LOG_DEBUG, "Session (%s) register request (%s for %s) processing\n", blade_session_id_get(bs), req_params_identity, req_params_nodeid);
if (blade_routemgr_master_local(blade_handle_routemgr_get(bh))) {
// @todo add identity mapping to nodeid, normally handled in the response handler
blade_routemgr_identity_add(bh->routemgr, identity, req_params_nodeid);
// @todo this is the masters chance to do any additional validation on the identity registration, just trust it for now
blade_rpc_response_raw_create(&res, &res_result, blade_rpc_request_messageid_get(brpcreq));
cJSON_AddStringToObject(res_result, "identity", req_params_identity);
cJSON_AddStringToObject(res_result, "nodeid", req_params_nodeid);
// request was just received on a session that is already read locked, so we can assume the response goes back on the same session without further lookup
blade_session_send(bs, res, 0, NULL, NULL);
} else {
blade_rpcregister_data_t *temp_data = (blade_rpcregister_data_t *)ks_pool_alloc(pool, sizeof(blade_rpcregister_data_t));
temp_data->original_requestid = ks_pstrdup(pool, blade_rpc_request_messageid_get(brpcreq));
ks_pool_set_cleanup(temp_data, NULL, blade_rpcregister_data_cleanup);
blade_handle_rpcregister_raw(bh, req_params_identity, req_params_nodeid, blade_rpcregister_response_handler, temp_data);
}
done:
if (identity) blade_identity_destroy(&identity);
if (res) cJSON_Delete(res);
if (bs) blade_session_read_unlock(bs);
return KS_FALSE;
}
// blade.register response handler
ks_bool_t blade_rpcregister_response_handler(blade_rpc_response_t *brpcres, void *data)
{
ks_bool_t ret = KS_FALSE;
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
blade_rpcregister_data_t *temp_data = NULL;
cJSON *res = NULL;
cJSON *res_result = NULL;
const char *res_result_identity = NULL;
const char *res_result_nodeid = NULL;
blade_identity_t *identity = NULL;
ks_assert(brpcres);
bh = blade_rpc_response_handle_get(brpcres);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(bh->sessionmgr, blade_rpc_response_sessionid_get(brpcres));
ks_assert(bs);
temp_data = (blade_rpcregister_data_t *)data;
res = blade_rpc_response_message_get(brpcres);
ks_assert(res);
res_result = cJSON_GetObjectItem(res, "result");
if (!res_result) {
ks_log(KS_LOG_DEBUG, "Session (%s) register response missing 'result' object\n", blade_session_id_get(bs));
goto done;
}
res_result_identity = cJSON_GetObjectCstr(res_result, "identity");
if (!res_result_identity) {
ks_log(KS_LOG_DEBUG, "Session (%s) register response missing 'identity'\n", blade_session_id_get(bs));
goto done;
}
blade_identity_create(&identity, ks_pool_get(bh));
if (blade_identity_parse(identity, res_result_identity) != KS_STATUS_SUCCESS) {
ks_log(KS_LOG_DEBUG, "Session (%s) register response invalid 'identity'\n", blade_session_id_get(bs));
goto done;
}
res_result_nodeid = cJSON_GetObjectCstr(res_result, "nodeid");
if (!res_result_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) register response missing 'nodeid'\n", blade_session_id_get(bs));
goto done;
}
blade_routemgr_identity_add(bh->routemgr, identity, res_result_nodeid);
// @note this should only happen on the last response, received by the registering node
if (temp_data && temp_data->original_callback) ret = temp_data->original_callback(brpcres, temp_data->original_data);
if (temp_data && temp_data->original_requestid) {
blade_session_t *relay = NULL;
if (!(relay = blade_routemgr_route_lookup(bh->routemgr, res_result_nodeid))) {
goto done;
}
blade_rpc_response_raw_create(&res, &res_result, temp_data->original_requestid);
cJSON_AddStringToObject(res_result, "identity", res_result_identity);
cJSON_AddStringToObject(res_result, "nodeid", res_result_nodeid);
blade_session_send(relay, res, 0, NULL, NULL);
cJSON_Delete(res);
blade_session_read_unlock(relay);
}
done:
if (temp_data) ks_pool_free(&temp_data);
if (identity) blade_identity_destroy(&identity);
blade_session_read_unlock(bs);
return ret;
}
// blade.publish request generator
KS_DECLARE(ks_status_t) blade_handle_rpcpublish(blade_handle_t *bh, blade_rpcpublish_command_t command, const char *protocol, cJSON *channels, blade_rpc_response_callback_t callback, void *data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
ks_assert(bh);
ks_assert(protocol);
// @todo consideration for the Master trying to publish a protocol, with no upstream
if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
// @todo validate command and parameters
switch (command) {
case BLADE_RPCPUBLISH_COMMAND_CONTROLLER_ADD:
break;
case BLADE_RPCPUBLISH_COMMAND_CONTROLLER_REMOVE:
break;
case BLADE_RPCPUBLISH_COMMAND_CHANNEL_ADD:
if (!channels || cJSON_GetArraySize(channels) <= 0) {
ret = KS_STATUS_ARG_NULL;
goto done;
}
break;
case BLADE_RPCPUBLISH_COMMAND_CHANNEL_REMOVE:
break;
default:
ret = KS_STATUS_ARG_INVALID;
goto done;
}
// create the response
blade_rpc_request_raw_create(ks_pool_get(bh), &req, &req_params, NULL, "blade.publish");
cJSON_AddNumberToObject(req_params, "command", command);
cJSON_AddStringToObject(req_params, "protocol", protocol);
blade_routemgr_local_pack(bh->routemgr, req_params, "requester-nodeid");
if (!blade_routemgr_master_pack(bh->routemgr, req_params, "responder-nodeid")) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
if (channels) cJSON_AddItemToObject(req_params, "channels", cJSON_Duplicate(channels, 1));
// @todo add a parameter containing a block of json for schema definitions for each of the methods being published
ks_log(KS_LOG_DEBUG, "Session (%s) publish request started\n", blade_session_id_get(bs));
ret = blade_session_send(bs, req, 0, callback, data);
done:
if (req) cJSON_Delete(req);
if (bs) blade_session_read_unlock(bs);
return ret;
}
// blade.publish request handler
ks_bool_t blade_rpcpublish_request_handler(blade_rpc_request_t *brpcreq, void *data)
{
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
cJSON *req_params_channels = NULL;
cJSON *req_params_channels_element = NULL;
cJSON *req_params_channels_element_flags = NULL;
cJSON *req_params_command = NULL;
blade_rpcpublish_command_t command = BLADE_RPCPUBLISH_COMMAND_NONE;
const char *req_params_protocol = NULL;
const char *req_params_requester_nodeid = NULL;
const char *req_params_responder_nodeid = NULL;
const char *req_params_channels_element_name = NULL;
cJSON *res = NULL;
cJSON *res_result = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(blade_handle_sessionmgr_get(bh), blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
// @todo error messages in here SHOULD include requester-nodeid and responder-nodeid in the error responses to ensure
// proper return routing of the error message
req_params = cJSON_GetObjectItem(req, "params");
if (!req_params) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request missing 'params' object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params object");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_command = cJSON_GetObjectItem(req_params, "command");
if (!req_params_command) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request missing 'command'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params command");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
command = (blade_rpcpublish_command_t)req_params_command->valueint;
switch (command) {
case BLADE_RPCPUBLISH_COMMAND_CONTROLLER_ADD:
case BLADE_RPCPUBLISH_COMMAND_CONTROLLER_REMOVE:
case BLADE_RPCPUBLISH_COMMAND_CHANNEL_ADD:
case BLADE_RPCPUBLISH_COMMAND_CHANNEL_REMOVE: break;
default: goto done;
}
req_params_protocol = cJSON_GetObjectCstr(req_params, "protocol");
if (!req_params_protocol) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request missing 'protocol'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params protocol");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_requester_nodeid = cJSON_GetObjectCstr(req_params, "requester-nodeid");
if (!req_params_requester_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request missing 'requester-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params requester-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_responder_nodeid = cJSON_GetObjectCstr(req_params, "responder-nodeid");
if (!req_params_responder_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request missing 'responder-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params responder-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
if (!blade_routemgr_master_check(bh->routemgr, req_params_responder_nodeid)) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request invalid 'responder-nodeid' (%s)\n", blade_session_id_get(bs), req_params_responder_nodeid);
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params responder-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
// @todo get enumeration parameter to represent a publish command, including add_protocol, remove_protocol, and update_channels
// @todo switch channels to separate add_channels and remove_channels
req_params_channels = cJSON_GetObjectItem(req_params, "channels");
if (req_params_channels) {
if (req_params_channels->type != cJSON_Array) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request invalid 'channels' type, expected array\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params channels");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
cJSON_ArrayForEach(req_params_channels_element, req_params_channels) {
if (req_params_channels_element->type != cJSON_Object) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request invalid 'channels' element type, expected object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params channels");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_channels_element_name = cJSON_GetObjectCstr(req_params_channels_element, "name");
if (!req_params_channels_element_name) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request missing 'channels' element name\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params channels element name");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_channels_element_flags = cJSON_GetObjectItem(req_params_channels_element, "flags");
if (req_params_channels_element_flags && req_params_channels_element_flags->type != cJSON_Number) {
ks_log(KS_LOG_DEBUG, "Session (%s) publish request invalid 'channels' element flags type, expected number\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params channels element flags type");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
}
}
ks_log(KS_LOG_DEBUG, "Session (%s) publish request (%s to %s) processing\n", blade_session_id_get(bs), req_params_requester_nodeid, req_params_responder_nodeid);
// @todo switch on publish command, make the following code for add_protocol
switch (command) {
case BLADE_RPCPUBLISH_COMMAND_CONTROLLER_ADD:
blade_mastermgr_protocol_controller_add(bh->mastermgr, req_params_protocol, req_params_requester_nodeid);
if (req_params_channels) {
cJSON_ArrayForEach(req_params_channels_element, req_params_channels) {
req_params_channels_element_name = cJSON_GetObjectCstr(req_params_channels_element, "name");
req_params_channels_element_flags = cJSON_GetObjectItem(req_params_channels_element, "flags");
blade_mastermgr_protocol_channel_add(bh->mastermgr, req_params_protocol, req_params_channels_element_name, (blade_channel_flags_t)req_params_channels_element_flags->valueint);
}
}
break;
case BLADE_RPCPUBLISH_COMMAND_CONTROLLER_REMOVE:
blade_mastermgr_protocol_controller_remove(bh->mastermgr, req_params_protocol, req_params_requester_nodeid);
break;
case BLADE_RPCPUBLISH_COMMAND_CHANNEL_ADD:
if (req_params_channels) {
cJSON_ArrayForEach(req_params_channels_element, req_params_channels) {
req_params_channels_element_name = cJSON_GetObjectCstr(req_params_channels_element, "name");
req_params_channels_element_flags = cJSON_GetObjectItem(req_params_channels_element, "flags");
blade_mastermgr_protocol_channel_add(bh->mastermgr, req_params_protocol, req_params_channels_element_name, (blade_channel_flags_t)req_params_channels_element_flags->valueint);
}
}
break;
case BLADE_RPCPUBLISH_COMMAND_CHANNEL_REMOVE:
if (req_params_channels) {
cJSON_ArrayForEach(req_params_channels_element, req_params_channels) {
req_params_channels_element_name = cJSON_GetObjectCstr(req_params_channels_element, "name");
blade_mastermgr_protocol_channel_remove(bh->mastermgr, req_params_protocol, req_params_channels_element_name);
}
}
break;
default:
goto done;
}
// build the actual response finally
blade_rpc_response_raw_create(&res, &res_result, blade_rpc_request_messageid_get(brpcreq));
cJSON_AddStringToObject(res_result, "protocol", req_params_protocol);
cJSON_AddStringToObject(res_result, "requester-nodeid", req_params_requester_nodeid);
cJSON_AddStringToObject(res_result, "responder-nodeid", req_params_responder_nodeid);
// @todo include a list of channels that failed to be added or removed if applicable?
// request was just received on a session that is already read locked, so we can assume the response goes back on the same session without further lookup
blade_session_send(bs, res, 0, NULL, NULL);
done:
if (res) cJSON_Delete(res);
if (bs) blade_session_read_unlock(bs);
return KS_FALSE;
}
// blade.authorize request generator
KS_DECLARE(ks_status_t) blade_handle_rpcauthorize(blade_handle_t *bh, const char *nodeid, ks_bool_t remove, const char *protocol, cJSON *channels, blade_rpc_response_callback_t callback, void *data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
ks_assert(bh);
ks_assert(nodeid);
ks_assert(protocol);
ks_assert(channels);
// @todo consideration for the Master trying to publish a protocol, with no upstream
if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
blade_rpc_request_raw_create(ks_pool_get(bh), &req, &req_params, NULL, "blade.authorize");
// fill in the req_params
cJSON_AddStringToObject(req_params, "protocol", protocol);
if (remove) cJSON_AddTrueToObject(req_params, "remove");
cJSON_AddStringToObject(req_params, "authorized-nodeid", nodeid);
blade_routemgr_local_pack(bh->routemgr, req_params, "requester-nodeid");
if (!blade_routemgr_master_pack(bh->routemgr, req_params, "responder-nodeid")) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
cJSON_AddItemToObject(req_params, "channels", cJSON_Duplicate(channels, 1));
// @todo add a parameter containing a block of json for schema definitions for each of the methods being published
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request started\n", blade_session_id_get(bs));
ret = blade_session_send(bs, req, 0, callback, data);
done:
if (req) cJSON_Delete(req);
if (bs) blade_session_read_unlock(bs);
return ret;
}
// blade.authorize request handler
ks_bool_t blade_rpcauthorize_request_handler(blade_rpc_request_t *brpcreq, void *data)
{
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
cJSON *req_params_channels = NULL;
cJSON *req_params_remove = NULL;
cJSON *channel = NULL;
ks_bool_t remove = KS_FALSE;
const char *req_params_protocol = NULL;
const char *req_params_authorized_nodeid = NULL;
const char *req_params_requester_nodeid = NULL;
const char *req_params_responder_nodeid = NULL;
cJSON *res = NULL;
cJSON *res_result = NULL;
cJSON *res_result_authorized_channels = NULL;
cJSON *res_result_unauthorized_channels = NULL;
cJSON *res_result_failed_channels = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(blade_handle_sessionmgr_get(bh), blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
// @todo error messages in here need to include requester-nodeid and responder-nodeid in the error responses to ensure
// proper return routing of the error message
req_params = cJSON_GetObjectItem(req, "params");
if (!req_params) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request missing 'params' object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params object");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_protocol = cJSON_GetObjectCstr(req_params, "protocol");
if (!req_params_protocol) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request missing 'protocol'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params protocol");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_remove = cJSON_GetObjectItem(req_params, "remove");
if (req_params_remove && req_params_remove->type == cJSON_True) remove = KS_TRUE;
req_params_authorized_nodeid = cJSON_GetObjectCstr(req_params, "authorized-nodeid");
if (!req_params_authorized_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request missing 'authorized-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params authorized-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_requester_nodeid = cJSON_GetObjectCstr(req_params, "requester-nodeid");
if (!req_params_requester_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request missing 'requester-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params requester-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_responder_nodeid = cJSON_GetObjectCstr(req_params, "responder-nodeid");
if (!req_params_responder_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request missing 'responder-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params responder-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_channels = cJSON_GetObjectItem(req_params, "channels");
if (!req_params_channels) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request missing 'channels'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params channels");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
if (req_params_channels->type != cJSON_Array) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request invalid 'channels' type, expected array\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params channels");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
cJSON_ArrayForEach(channel, req_params_channels) {
if (channel->type != cJSON_String) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request invalid 'channels' element type, expected string\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params channels");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
}
if (!blade_routemgr_master_check(bh->routemgr, req_params_responder_nodeid)) {
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request invalid 'responder-nodeid' (%s)\n", blade_session_id_get(bs), req_params_responder_nodeid);
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params responder-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
ks_log(KS_LOG_DEBUG, "Session (%s) authorize request (%s to %s) processing\n", blade_session_id_get(bs), req_params_requester_nodeid, req_params_responder_nodeid);
// build the actual response finally
blade_rpc_response_raw_create(&res, &res_result, blade_rpc_request_messageid_get(brpcreq));
cJSON_ArrayForEach(channel, req_params_channels) {
if (blade_mastermgr_protocol_channel_authorize(bh->mastermgr, remove, req_params_protocol, channel->valuestring, req_params_requester_nodeid, req_params_authorized_nodeid) == KS_STATUS_SUCCESS) {
if (remove) {
if (!res_result_unauthorized_channels) res_result_unauthorized_channels = cJSON_CreateArray();
cJSON_AddItemToArray(res_result_unauthorized_channels, cJSON_CreateString(channel->valuestring));
} else {
if (!res_result_authorized_channels) res_result_authorized_channels = cJSON_CreateArray();
cJSON_AddItemToArray(res_result_authorized_channels, cJSON_CreateString(channel->valuestring));
}
} else {
if (!res_result_failed_channels) res_result_failed_channels = cJSON_CreateArray();
cJSON_AddItemToArray(res_result_failed_channels, cJSON_CreateString(channel->valuestring));
}
}
cJSON_AddStringToObject(res_result, "protocol", req_params_protocol);
cJSON_AddStringToObject(res_result, "authorized-nodeid", req_params_authorized_nodeid);
cJSON_AddStringToObject(res_result, "requester-nodeid", req_params_requester_nodeid);
cJSON_AddStringToObject(res_result, "responder-nodeid", req_params_responder_nodeid);
if (res_result_authorized_channels) cJSON_AddItemToObject(res_result, "authorized-channels", res_result_authorized_channels);
if (res_result_unauthorized_channels) cJSON_AddItemToObject(res_result, "unauthorized-channels", res_result_unauthorized_channels);
if (res_result_failed_channels) cJSON_AddItemToObject(res_result, "failed-channels", res_result_failed_channels);
// request was just received on a session that is already read locked, so we can assume the response goes back on the same session without further lookup
blade_session_send(bs, res, 0, NULL, NULL);
if (res_result_unauthorized_channels) {
blade_handle_rpcsubscribe_raw(bh, BLADE_RPCSUBSCRIBE_COMMAND_SUBSCRIBER_REMOVE, req_params_protocol, res_result_unauthorized_channels, req_params_authorized_nodeid, KS_TRUE, NULL, NULL);
}
done:
if (res) cJSON_Delete(res);
if (bs) blade_session_read_unlock(bs);
return KS_FALSE;
}
// blade.locate request generator
// @todo discuss system to support caching locate results, and internally subscribing to receive event updates related to protocols which have been located
// to ensure local caches remain synced when protocol controllers change, but this requires additional filters for event propagating to avoid broadcasting
// every protocol update to everyone which may actually be a better way than an explicit locate request
KS_DECLARE(ks_status_t) blade_handle_rpclocate(blade_handle_t *bh, const char *protocol, blade_rpc_response_callback_t callback, void *data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
ks_assert(bh);
ks_assert(protocol);
if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
blade_rpc_request_raw_create(ks_pool_get(bh), &req, &req_params, NULL, "blade.locate");
// fill in the req_params
cJSON_AddStringToObject(req_params, "protocol", protocol);
blade_routemgr_local_pack(bh->routemgr, req_params, "requester-nodeid");
if (!blade_routemgr_master_pack(bh->routemgr, req_params, "responder-nodeid")) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
ks_log(KS_LOG_DEBUG, "Session (%s) locate request started\n", blade_session_id_get(bs));
ret = blade_session_send(bs, req, 0, callback, data);
done:
if (req) cJSON_Delete(req);
if (bs) blade_session_read_unlock(bs);
return ret;
}
// blade.locate request handler
ks_bool_t blade_rpclocate_request_handler(blade_rpc_request_t *brpcreq, void *data)
{
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_params_protocol = NULL;
const char *req_params_requester_nodeid = NULL;
const char *req_params_responder_nodeid = NULL;
cJSON *res = NULL;
cJSON *res_result = NULL;
cJSON *res_result_controllers = NULL;
blade_protocol_t *bp = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(blade_handle_sessionmgr_get(bh), blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
// @todo error messages in here need to include requester-nodeid and responder-nodeid in the error responses to ensure
// proper return routing of the error message
req_params = cJSON_GetObjectItem(req, "params");
if (!req_params) {
ks_log(KS_LOG_DEBUG, "Session (%s) locate request missing 'params' object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params object");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_protocol = cJSON_GetObjectCstr(req_params, "protocol");
if (!req_params_protocol) {
ks_log(KS_LOG_DEBUG, "Session (%s) locate request missing 'protocol'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params protocol");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_requester_nodeid = cJSON_GetObjectCstr(req_params, "requester-nodeid");
if (!req_params_requester_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) locate request missing 'requester-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params requester-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_responder_nodeid = cJSON_GetObjectCstr(req_params, "responder-nodeid");
if (!req_params_responder_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) locate request missing 'responder-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params responder-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
if (!blade_routemgr_master_check(bh->routemgr, req_params_responder_nodeid)) {
ks_log(KS_LOG_DEBUG, "Session (%s) locate request invalid 'responder-nodeid' (%s)\n", blade_session_id_get(bs), req_params_responder_nodeid);
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Invalid params responder-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
ks_log(KS_LOG_DEBUG, "Session (%s) locate request (%s to %s) processing\n", blade_session_id_get(bs), req_params_requester_nodeid, req_params_responder_nodeid);
bp = blade_mastermgr_protocol_lookup(bh->mastermgr, req_params_protocol, KS_FALSE);
if (bp) {
res_result_controllers = blade_protocol_controller_pack(bp);
blade_protocol_read_unlock(bp);
}
// build the actual response finally
blade_rpc_response_raw_create(&res, &res_result, blade_rpc_request_messageid_get(brpcreq));
cJSON_AddStringToObject(res_result, "protocol", req_params_protocol);
cJSON_AddStringToObject(res_result, "requester-nodeid", req_params_requester_nodeid);
cJSON_AddStringToObject(res_result, "responder-nodeid", req_params_responder_nodeid);
if (res_result_controllers) cJSON_AddItemToObject(res_result, "controllers", res_result_controllers);
// request was just received on a session that is already read locked, so we can assume the response goes back on the same session without further lookup
blade_session_send(bs, res, 0, NULL, NULL);
done:
if (res) cJSON_Delete(res);
if (bs) blade_session_read_unlock(bs);
return KS_FALSE;
}
// blade.execute request generator
KS_DECLARE(ks_status_t) blade_handle_rpcexecute(blade_handle_t *bh, const char *nodeid, const char *method, const char *protocol, cJSON *params, ks_time_t ttl, blade_rpc_response_callback_t callback, void *data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
ks_assert(bh);
ks_assert(nodeid);
ks_assert(method);
ks_assert(protocol);
if (!(bs = blade_routemgr_route_lookup(blade_handle_routemgr_get(bh), nodeid))) {
if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
}
blade_rpc_request_raw_create(ks_pool_get(bh), &req, &req_params, NULL, "blade.execute");
cJSON_AddStringToObject(req_params, "method", method);
cJSON_AddStringToObject(req_params, "protocol", protocol);
blade_routemgr_local_pack(bh->routemgr, req_params, "requester-nodeid");
cJSON_AddStringToObject(req_params, "responder-nodeid", nodeid);
if (params) cJSON_AddItemToObject(req_params, "params", cJSON_Duplicate(params, 1));
ks_log(KS_LOG_DEBUG, "Session (%s) execute request started\n", blade_session_id_get(bs));
ret = blade_session_send(bs, req, 0, callback, data);
done:
if (req) cJSON_Delete(req);
if (bs) blade_session_read_unlock(bs);
return ret;
}
// blade.execute request handler
ks_bool_t blade_rpcexecute_request_handler(blade_rpc_request_t *brpcreq, void *data)
{
ks_bool_t ret = KS_FALSE;
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_params_method = NULL;
const char *req_params_protocol = NULL;
const char *req_params_requester_nodeid = NULL;
const char *req_params_responder_nodeid = NULL;
blade_rpc_t *brpc = NULL;
blade_rpc_request_callback_t callback = NULL;
cJSON *res = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(blade_handle_sessionmgr_get(bh), blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
// @todo error messages in here need to include requester-nodeid and responder-nodeid in the error responses to ensure
// proper return routing of the error message
req_params = cJSON_GetObjectItem(req, "params");
if (!req_params) {
ks_log(KS_LOG_DEBUG, "Session (%s) execute request missing 'params' object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params object");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_method = cJSON_GetObjectCstr(req_params, "method");
if (!req_params_method) {
ks_log(KS_LOG_DEBUG, "Session (%s) execute request missing 'method'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params method");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_protocol = cJSON_GetObjectCstr(req_params, "protocol");
if (!req_params_protocol) {
ks_log(KS_LOG_DEBUG, "Session (%s) execute request missing 'protocol'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params protocol");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_requester_nodeid = cJSON_GetObjectCstr(req_params, "requester-nodeid");
if (!req_params_requester_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) execute request missing 'requester-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params requester-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_responder_nodeid = cJSON_GetObjectCstr(req_params, "responder-nodeid");
if (!req_params_responder_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) execute request missing 'responder-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params responder-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
ks_log(KS_LOG_DEBUG, "Session (%s) execute request (%s to %s) processing\n", blade_session_id_get(bs), req_params_requester_nodeid, req_params_responder_nodeid);
// @todo pull out nested params block if it exists and check against schema later, so blade_rpc_t should be able to carry a schema with it, even though blade.xxx may not associate one
brpc = blade_rpcmgr_protocolrpc_lookup(blade_handle_rpcmgr_get(bh), req_params_method, req_params_protocol);
if (!brpc) {
ks_log(KS_LOG_DEBUG, "Session (%s) execute request unknown method\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Unknown params method");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
callback = blade_rpc_callback_get(brpc);
if (callback) ret = callback(brpcreq, blade_rpc_data_get(brpc));
done:
if (res) cJSON_Delete(res);
if (bs) blade_session_read_unlock(bs);
return ret;
}
KS_DECLARE(const char *) blade_rpcexecute_request_requester_nodeid_get(blade_rpc_request_t *brpcreq)
{
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_requester_nodeid = NULL;
ks_assert(brpcreq);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (req_params) req_requester_nodeid = cJSON_GetObjectCstr(req_params, "requester-nodeid");
return req_requester_nodeid;
}
KS_DECLARE(const char *) blade_rpcexecute_request_responder_nodeid_get(blade_rpc_request_t *brpcreq)
{
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_responder_nodeid = NULL;
ks_assert(brpcreq);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (req_params) req_responder_nodeid = cJSON_GetObjectCstr(req_params, "responder-nodeid");
return req_responder_nodeid;
}
KS_DECLARE(cJSON *) blade_rpcexecute_request_params_get(blade_rpc_request_t *brpcreq)
{
cJSON *req = NULL;
cJSON *req_params = NULL;
cJSON *req_params_params = NULL;
ks_assert(brpcreq);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (req_params) req_params_params = cJSON_GetObjectItem(req_params, "params");
return req_params_params;
}
KS_DECLARE(cJSON *) blade_rpcexecute_response_result_get(blade_rpc_response_t *brpcres)
{
cJSON *res = NULL;
cJSON *res_result = NULL;
cJSON *res_result_result = NULL;
ks_assert(brpcres);
res = blade_rpc_response_message_get(brpcres);
ks_assert(res);
res_result = cJSON_GetObjectItem(res, "result");
if (res_result) res_result_result = cJSON_GetObjectItem(res_result, "result");
return res_result_result;
}
// @note added blade_rpc_request_duplicate() to support async responding where the callbacks return immediately and the blade_rpc_request_t will be destroyed,
// in such cases duplicate the request to retain a copy for passing to blade_protocol_execute_response_send when sending the response as it contains everything
// needed to produce a response except the inner result block for blade.execute and call blade_rpc_request_destroy() to clean up the duplicate when finished
KS_DECLARE(void) blade_rpcexecute_response_send(blade_rpc_request_t *brpcreq, cJSON *result)
{
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
//const char *req_params_method = NULL;
const char *req_params_protocol = NULL;
const char *req_params_requester_nodeid = NULL;
const char *req_params_responder_nodeid = NULL;
cJSON *res = NULL;
cJSON *res_result = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(blade_handle_sessionmgr_get(bh), blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
ks_assert(req_params);
req_params_protocol = cJSON_GetObjectCstr(req_params, "protocol");
ks_assert(req_params_protocol);
req_params_requester_nodeid = cJSON_GetObjectCstr(req_params, "requester-nodeid");
ks_assert(req_params_requester_nodeid);
req_params_responder_nodeid = cJSON_GetObjectCstr(req_params, "responder-nodeid");
ks_assert(req_params_responder_nodeid);
// build the actual response finally, wrap this into blade_protocol_execute_response_send()
blade_rpc_response_raw_create(&res, &res_result, blade_rpc_request_messageid_get(brpcreq));
cJSON_AddStringToObject(res_result, "protocol", req_params_protocol);
cJSON_AddStringToObject(res_result, "requester-nodeid", req_params_requester_nodeid);
cJSON_AddStringToObject(res_result, "responder-nodeid", req_params_responder_nodeid);
if (result) cJSON_AddItemToObject(res_result, "result", cJSON_Duplicate(result, 1));
// request was just received on a session that is already read locked, so we can assume the response goes back on the same session without further lookup
blade_session_send(bs, res, 0, NULL, NULL);
cJSON_Delete(res);
blade_session_read_unlock(bs);
}
static void blade_rpcsubscribe_data_cleanup(void *ptr, void *arg, ks_pool_cleanup_action_t action, ks_pool_cleanup_type_t type)
{
blade_rpcsubscribe_data_t *brpcsd = (blade_rpcsubscribe_data_t *)ptr;
ks_assert(brpcsd);
switch (action) {
case KS_MPCL_ANNOUNCE:
break;
case KS_MPCL_TEARDOWN:
if (brpcsd->original_requestid) ks_pool_free(&brpcsd->original_requestid);
break;
case KS_MPCL_DESTROY:
break;
}
}
// blade.subscribe request generator
KS_DECLARE(ks_status_t) blade_handle_rpcsubscribe(blade_handle_t *bh,
blade_rpcsubscribe_command_t command,
const char *protocol,
cJSON *channels,
blade_rpc_response_callback_t callback,
void *data,
blade_rpc_request_callback_t channel_callback,
void *channel_data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
const char *localid = NULL;
blade_rpcsubscribe_data_t *temp_data = NULL;
ks_assert(bh);
ks_assert(protocol);
ks_assert(channels);
// @note this is always produced by a subscriber, and sent upstream, master will only use the internal raw call
if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
blade_routemgr_local_copy(bh->routemgr, &localid);
ks_assert(localid);
// @note since this is allocated in the handle's pool, if the handle is shutdown during a pending request, then the data
// memory will be cleaned up with the handle, otherwise should be cleaned up in the response callback
temp_data = (blade_rpcsubscribe_data_t *)ks_pool_alloc(ks_pool_get(bh), sizeof(blade_rpcsubscribe_data_t));
temp_data->original_callback = callback;
temp_data->original_data = data;
temp_data->channel_callback = channel_callback;
temp_data->channel_data = channel_data;
ks_pool_set_cleanup(temp_data, NULL, blade_rpcsubscribe_data_cleanup);
ret = blade_handle_rpcsubscribe_raw(bh, command, protocol, channels, localid, KS_FALSE, blade_rpcsubscribe_response_handler, temp_data);
ks_pool_free(&localid);
done:
if (bs) blade_session_read_unlock(bs);
return ret;
}
ks_status_t blade_handle_rpcsubscribe_raw(blade_handle_t *bh,
blade_rpcsubscribe_command_t command,
const char *protocol,
cJSON *channels,
const char *subscriber,
ks_bool_t downstream,
blade_rpc_response_callback_t callback,
blade_rpcsubscribe_data_t *data)
{
ks_status_t ret = KS_STATUS_SUCCESS;
blade_session_t *bs = NULL;
ks_pool_t *pool = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
ks_assert(bh);
ks_assert(protocol);
ks_assert(channels);
ks_assert(subscriber);
if (downstream) {
// @note if a master is sending a downstream update, it may only remove subscriptions, it cannot force a subscription without the subscriber providing the callback
if (command != BLADE_RPCSUBSCRIBE_COMMAND_SUBSCRIBER_REMOVE) {
ret = KS_STATUS_NOT_ALLOWED;
goto done;
}
if (!(bs = blade_routemgr_route_lookup(blade_handle_routemgr_get(bh), subscriber))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
}
else if (!(bs = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
ret = KS_STATUS_DISCONNECTED;
goto done;
}
pool = ks_pool_get(bh);
ks_assert(pool);
if (command == BLADE_RPCSUBSCRIBE_COMMAND_SUBSCRIBER_REMOVE) {
cJSON *channel = NULL;
cJSON_ArrayForEach(channel, channels) {
blade_subscriptionmgr_subscriber_remove(bh->subscriptionmgr, NULL, protocol, channel->valuestring, subscriber);
}
}
blade_rpc_request_raw_create(pool, &req, &req_params, NULL, "blade.subscribe");
cJSON_AddNumberToObject(req_params, "command", command);
cJSON_AddStringToObject(req_params, "protocol", protocol);
cJSON_AddStringToObject(req_params, "subscriber-nodeid", subscriber);
if (downstream) cJSON_AddTrueToObject(req_params, "downstream");
cJSON_AddItemToObject(req_params, "channels", cJSON_Duplicate(channels, 1));
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe request started\n", blade_session_id_get(bs));
ret = blade_session_send(bs, req, 0, blade_rpcsubscribe_response_handler, data);
done:
if (req) cJSON_Delete(req);
if (bs) blade_session_read_unlock(bs);
return ret;
}
// blade.subscribe request handler
ks_bool_t blade_rpcsubscribe_request_handler(blade_rpc_request_t *brpcreq, void *data)
{
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
ks_pool_t *pool = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
cJSON *req_params_command = NULL;
blade_rpcsubscribe_command_t command = BLADE_RPCSUBSCRIBE_COMMAND_NONE;
const char *req_params_protocol = NULL;
const char *req_params_subscriber_nodeid = NULL;
cJSON *req_params_downstream = NULL;
ks_bool_t downstream = KS_FALSE;
cJSON *req_params_channels = NULL;
ks_bool_t masterlocal = KS_FALSE;
cJSON *res = NULL;
cJSON *res_result = NULL;
cJSON *res_result_subscribe_channels = NULL;
cJSON *res_result_failed_channels = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
pool = ks_pool_get(bh);
ks_assert(pool);
bs = blade_sessionmgr_session_lookup(blade_handle_sessionmgr_get(bh), blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (!req_params) {
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe request missing 'params' object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params object");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_command = cJSON_GetObjectItem(req_params, "command");
if (!req_params_command) {
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe request missing 'command'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params command");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
command = (blade_rpcsubscribe_command_t)req_params_command->valueint;
switch (command) {
case BLADE_RPCSUBSCRIBE_COMMAND_SUBSCRIBER_ADD:
case BLADE_RPCSUBSCRIBE_COMMAND_SUBSCRIBER_REMOVE: break;
default: goto done;
}
req_params_protocol = cJSON_GetObjectCstr(req_params, "protocol");
if (!req_params_protocol) {
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe request missing 'protocol'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params protocol");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_subscriber_nodeid = cJSON_GetObjectCstr(req_params, "subscriber-nodeid");
if (!req_params_subscriber_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe request missing 'subscriber-nodeid'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params subscriber-nodeid");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
// @todo this may not be required, may be able to assume direction based on the session the message is received from, if came from upstream
// then it is heading downstream, otherwise it is heading upstream
req_params_downstream = cJSON_GetObjectItem(req_params, "downstream");
downstream = req_params_downstream && req_params_downstream->type == cJSON_True;
req_params_channels = cJSON_GetObjectItem(req_params, "channels");
if (!req_params_channels) {
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe request missing 'channels'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params channels");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe request processing\n", blade_session_id_get(bs));
masterlocal = blade_routemgr_master_local(blade_handle_routemgr_get(bh));
if (masterlocal || blade_routemgr_local_check(blade_handle_routemgr_get(bh), req_params_subscriber_nodeid)) {
// @note This is normally handled by blade_handle_rpcsubscribe_raw() to ensure authorization removals are processed during the request path
// including on the node they start on, whether that is the master or the subscriber
if (command == BLADE_RPCSUBSCRIBE_COMMAND_SUBSCRIBER_REMOVE) {
cJSON *channel = NULL;
cJSON_ArrayForEach(channel, req_params_channels) {
blade_subscriptionmgr_subscriber_remove(bh->subscriptionmgr, NULL, req_params_protocol, channel->valuestring, req_params_subscriber_nodeid);
}
}
blade_rpc_response_raw_create(&res, &res_result, blade_rpc_request_messageid_get(brpcreq));
cJSON_AddStringToObject(res_result, "protocol", req_params_protocol);
cJSON_AddStringToObject(res_result, "subscriber-nodeid", req_params_subscriber_nodeid);
if (downstream) cJSON_AddTrueToObject(res_result, "downstream");
if (command == BLADE_RPCSUBSCRIBE_COMMAND_SUBSCRIBER_ADD) {
// @note this can only be received by the master due to other validation logic in requests which prevents the master from sending a request to add a subscriber
cJSON *channel = NULL;
cJSON_ArrayForEach(channel, req_params_channels) {
if (blade_mastermgr_protocol_channel_authorization_verify(bh->mastermgr, req_params_protocol, channel->valuestring, req_params_subscriber_nodeid)) {
blade_subscriptionmgr_subscriber_add(bh->subscriptionmgr, NULL, req_params_protocol, channel->valuestring, req_params_subscriber_nodeid);
if (!res_result_subscribe_channels) res_result_subscribe_channels = cJSON_CreateArray();
cJSON_AddItemToArray(res_result_subscribe_channels, cJSON_CreateString(channel->valuestring));
} else {
if (!res_result_failed_channels) res_result_failed_channels = cJSON_CreateArray();
cJSON_AddItemToArray(res_result_failed_channels, cJSON_CreateString(channel->valuestring));
}
}
}
if (res_result_subscribe_channels) cJSON_AddItemToObject(res_result, "subscribe-channels", res_result_subscribe_channels);
if (res_result_failed_channels) cJSON_AddItemToObject(res_result, "failed-channels", res_result_failed_channels);
// @note unsubscribe-channels get handled during the request path, so the response handlers do not need to reiterate them for any forseeable reason, and if they are needed they
// could be pulled from the original request associated to the response
// request was just received on a session that is already read locked, so we can assume the response goes back on the same session without further lookup
blade_session_send(bs, res, 0, NULL, NULL);
} else {
blade_rpcsubscribe_data_t *temp_data = (blade_rpcsubscribe_data_t *)ks_pool_alloc(pool, sizeof(blade_rpcsubscribe_data_t));
temp_data->original_requestid = ks_pstrdup(pool, blade_rpc_request_messageid_get(brpcreq));
ks_pool_set_cleanup(temp_data, NULL, blade_rpcsubscribe_data_cleanup);
blade_handle_rpcsubscribe_raw(bh, command, req_params_protocol, req_params_channels, req_params_subscriber_nodeid, downstream, blade_rpcsubscribe_response_handler, temp_data);
}
done:
if (res) cJSON_Delete(res);
if (bs) blade_session_read_unlock(bs);
return KS_FALSE;
}
// blade.subscribe response handler
ks_bool_t blade_rpcsubscribe_response_handler(blade_rpc_response_t *brpcres, void *data)
{
ks_bool_t ret = KS_FALSE;
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
blade_rpcsubscribe_data_t *temp_data = NULL;
cJSON *res = NULL;
cJSON *res_result = NULL;
const char *res_result_protocol = NULL;
const char *res_result_subscriber_nodeid = NULL;
cJSON *res_result_downstream = NULL;
ks_bool_t downstream = KS_FALSE;
cJSON *res_result_subscribe_channels = NULL;
cJSON *res_result_failed_channels = NULL;
ks_assert(brpcres);
bh = blade_rpc_response_handle_get(brpcres);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(bh->sessionmgr, blade_rpc_response_sessionid_get(brpcres));
ks_assert(bs);
temp_data = (blade_rpcsubscribe_data_t *)data;
res = blade_rpc_response_message_get(brpcres);
ks_assert(res);
res_result = cJSON_GetObjectItem(res, "result");
if (!res_result) {
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe response missing 'result' object\n", blade_session_id_get(bs));
goto done;
}
// @todo the following 2 fields, protocol, and subscriber-nodeid may not be required to carry in the response as they could be
// obtained from the original request tied to the response, change this later
res_result_protocol = cJSON_GetObjectCstr(res_result, "protocol");
if (!res_result_protocol) {
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe response missing 'protocol'\n", blade_session_id_get(bs));
goto done;
}
res_result_subscriber_nodeid = cJSON_GetObjectCstr(res_result, "subscriber-nodeid");
if (!res_result_subscriber_nodeid) {
ks_log(KS_LOG_DEBUG, "Session (%s) subscribe response missing 'subscriber-nodeid'\n", blade_session_id_get(bs));
goto done;
}
res_result_downstream = cJSON_GetObjectItem(res_result, "downstream");
downstream = res_result_downstream && res_result_downstream->type == cJSON_True;
res_result_subscribe_channels = cJSON_GetObjectItem(res_result, "subscribe-channels");
res_result_failed_channels = cJSON_GetObjectItem(res_result, "failed-channels");
if (res_result_subscribe_channels) {
// @note only reach here when the master has responded to authorize subscriptions to channels, so all nodes along the path must
// add the subscriber
cJSON *channel = NULL;
blade_subscription_t *bsub = NULL;
cJSON_ArrayForEach(channel, res_result_subscribe_channels) {
blade_subscriptionmgr_subscriber_add(bh->subscriptionmgr, &bsub, res_result_protocol, channel->valuestring, res_result_subscriber_nodeid);
// @note these will only get assigned on the last response, received by the subscriber
if (temp_data && temp_data->channel_callback) blade_subscription_callback_set(bsub, temp_data->channel_callback);
if (temp_data && temp_data->channel_data) blade_subscription_callback_data_set(bsub, temp_data->channel_data);
}
}
// @note this will only happen on the last response, received by the subscriber
if (temp_data && temp_data->original_callback) ret = temp_data->original_callback(brpcres, temp_data->original_data);
if (temp_data && temp_data->original_requestid) {
blade_session_t *relay = NULL;
if (downstream) {
if (!(relay = blade_sessionmgr_upstream_lookup(bh->sessionmgr))) {
goto done;
}
} else {
if (!(relay = blade_routemgr_route_lookup(bh->routemgr, res_result_subscriber_nodeid))) {
goto done;
}
}
blade_rpc_response_raw_create(&res, &res_result, temp_data->original_requestid);
cJSON_AddStringToObject(res_result, "protocol", res_result_protocol);
cJSON_AddStringToObject(res_result, "subscriber-nodeid", res_result_subscriber_nodeid);
if (downstream) cJSON_AddTrueToObject(res_result, "downstream");
if (res_result_subscribe_channels) cJSON_AddItemToObject(res_result, "subscribe-channels", cJSON_Duplicate(res_result_subscribe_channels, 1));
if (res_result_failed_channels) cJSON_AddItemToObject(res_result, "failed-channels", cJSON_Duplicate(res_result_failed_channels, 1));
blade_session_send(relay, res, 0, NULL, NULL);
cJSON_Delete(res);
blade_session_read_unlock(relay);
}
done:
if (temp_data) ks_pool_free(&temp_data);
blade_session_read_unlock(bs);
return ret;
}
// blade.broadcast request generator
KS_DECLARE(ks_status_t) blade_handle_rpcbroadcast(blade_handle_t *bh, const char *protocol, const char *channel, const char *event, cJSON *params, blade_rpc_response_callback_t callback, void *data)
{
ks_assert(bh);
ks_assert(protocol);
return blade_subscriptionmgr_broadcast(bh->subscriptionmgr, BLADE_RPCBROADCAST_COMMAND_EVENT, NULL, protocol, channel, event, params, callback, data);
}
// @todo blade_handle_rpcbroadcast_raw() to encapsulate adding subcommands to broadcast to support protocol removal, protocol channel removal, and normal event broadcast
// blade.broadcast request handler
ks_bool_t blade_rpcbroadcast_request_handler(blade_rpc_request_t *brpcreq, void *data)
{
ks_bool_t ret = KS_FALSE;
blade_handle_t *bh = NULL;
blade_session_t *bs = NULL;
cJSON *req = NULL;
cJSON *req_params = NULL;
cJSON *req_params_command = NULL;
blade_rpcbroadcast_command_t command = BLADE_RPCBROADCAST_COMMAND_NONE;
const char *req_params_protocol = NULL;
const char *req_params_channel = NULL;
const char *req_params_event = NULL;
cJSON *req_params_params = NULL;
blade_subscription_t *bsub = NULL;
blade_rpc_request_callback_t callback = NULL;
cJSON *res = NULL;
cJSON *res_result = NULL;
ks_assert(brpcreq);
bh = blade_rpc_request_handle_get(brpcreq);
ks_assert(bh);
bs = blade_sessionmgr_session_lookup(blade_handle_sessionmgr_get(bh), blade_rpc_request_sessionid_get(brpcreq));
ks_assert(bs);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (!req_params) {
ks_log(KS_LOG_DEBUG, "Session (%s) broadcast request missing 'params' object\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params object");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_protocol = cJSON_GetObjectCstr(req_params, "protocol");
if (!req_params_protocol) {
ks_log(KS_LOG_DEBUG, "Session (%s) broadcast request missing 'protocol'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params protocol");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
req_params_command = cJSON_GetObjectItem(req_params, "command");
if (!req_params_command) {
ks_log(KS_LOG_DEBUG, "Session (%s) broadcast request missing 'command'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params command");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
command = (blade_rpcbroadcast_command_t)req_params_command->valueint;
switch (command) {
case BLADE_RPCBROADCAST_COMMAND_EVENT:
req_params_event = cJSON_GetObjectCstr(req_params, "event");
if (!req_params_event) {
ks_log(KS_LOG_DEBUG, "Session (%s) broadcast request missing 'event'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params event");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
case BLADE_RPCBROADCAST_COMMAND_CHANNEL_REMOVE:
req_params_channel = cJSON_GetObjectCstr(req_params, "channel");
if (!req_params_channel) {
ks_log(KS_LOG_DEBUG, "Session (%s) broadcast request missing 'channel'\n", blade_session_id_get(bs));
blade_rpc_error_raw_create(&res, NULL, blade_rpc_request_messageid_get(brpcreq), -32602, "Missing params channel");
blade_session_send(bs, res, 0, NULL, NULL);
goto done;
}
break;
case BLADE_RPCBROADCAST_COMMAND_PROTOCOL_REMOVE: break;
default: goto done;
}
req_params_params = cJSON_GetObjectItem(req_params, "params");
if (!blade_session_loopback(bs)) blade_subscriptionmgr_broadcast(bh->subscriptionmgr, command, blade_session_id_get(bs), req_params_protocol, req_params_channel, req_params_event, req_params_params, NULL, NULL);
else if (command == BLADE_RPCBROADCAST_COMMAND_EVENT) {
bsub = blade_subscriptionmgr_subscription_lookup(bh->subscriptionmgr, req_params_protocol, req_params_channel);
if (bsub) {
callback = blade_subscription_callback_get(bsub);
if (callback) ret = callback(brpcreq, blade_subscription_callback_data_get(bsub));
}
}
// build the actual response finally
blade_rpc_response_raw_create(&res, &res_result, blade_rpc_request_messageid_get(brpcreq));
// @todo this is not neccessary, can obtain this from the original request
cJSON_AddStringToObject(res_result, "protocol", req_params_protocol);
if (req_params_channel) cJSON_AddStringToObject(res_result, "channel", req_params_channel);
if (req_params_event) cJSON_AddStringToObject(res_result, "event", req_params_event);
// request was just received on a session that is already read locked, so we can assume the response goes back on the same session without further lookup
blade_session_send(bs, res, 0, NULL, NULL);
done:
if (res) cJSON_Delete(res);
if (bs) blade_session_read_unlock(bs);
return ret;
}
KS_DECLARE(const char *) blade_rpcbroadcast_request_protocol_get(blade_rpc_request_t *brpcreq)
{
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_params_protocol = NULL;
ks_assert(brpcreq);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (req_params) req_params_protocol = cJSON_GetObjectCstr(req_params, "protocol");
return req_params_protocol;
}
KS_DECLARE(const char *) blade_rpcbroadcast_request_channel_get(blade_rpc_request_t *brpcreq)
{
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_params_channel = NULL;
ks_assert(brpcreq);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (req_params) req_params_channel = cJSON_GetObjectCstr(req_params, "channel");
return req_params_channel;
}
KS_DECLARE(const char *) blade_rpcbroadcast_request_event_get(blade_rpc_request_t *brpcreq)
{
cJSON *req = NULL;
cJSON *req_params = NULL;
const char *req_params_event = NULL;
ks_assert(brpcreq);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (req_params) req_params_event = cJSON_GetObjectCstr(req_params, "event");
return req_params_event;
}
KS_DECLARE(cJSON *) blade_rpcbroadcast_request_params_get(blade_rpc_request_t *brpcreq)
{
cJSON *req = NULL;
cJSON *req_params = NULL;
cJSON *req_params_params = NULL;
ks_assert(brpcreq);
req = blade_rpc_request_message_get(brpcreq);
ks_assert(req);
req_params = cJSON_GetObjectItem(req, "params");
if (req_params) req_params_params = cJSON_GetObjectItem(req_params, "params");
return req_params_params;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
*/
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