510 lines
16 KiB
C
510 lines
16 KiB
C
/*
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* Copyright (c) 2017, Shane Bryldt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of the original author; nor the names of any contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "blade.h"
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struct blade_subscriptionmgr_s {
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blade_handle_t *handle;
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ks_hash_t *subscriptions; // key, blade_subscription_t*
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ks_hash_t *subscriptions_cleanup; // target, ks_hash_t*
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};
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static void blade_subscriptionmgr_cleanup(void *ptr, void *arg, ks_pool_cleanup_action_t action, ks_pool_cleanup_type_t type)
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{
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//blade_routemgr_t *brmgr = (blade_routemgr_t *)ptr;
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//ks_assert(brmgr);
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switch (action) {
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case KS_MPCL_ANNOUNCE:
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break;
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case KS_MPCL_TEARDOWN:
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break;
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case KS_MPCL_DESTROY:
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break;
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}
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}
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KS_DECLARE(ks_status_t) blade_subscriptionmgr_create(blade_subscriptionmgr_t **bsmgrP, blade_handle_t *bh)
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{
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ks_pool_t *pool = NULL;
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blade_subscriptionmgr_t *bsmgr = NULL;
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ks_assert(bsmgrP);
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ks_pool_open(&pool);
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ks_assert(pool);
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bsmgr = ks_pool_alloc(pool, sizeof(blade_subscriptionmgr_t));
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bsmgr->handle = bh;
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// @note can let removes free keys and values for subscriptions, both are allocated from the same pool as the hash itself
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ks_hash_create(&bsmgr->subscriptions, KS_HASH_MODE_CASE_INSENSITIVE, KS_HASH_FLAG_RWLOCK | KS_HASH_FLAG_DUP_CHECK | KS_HASH_FLAG_FREE_KEY | KS_HASH_FLAG_FREE_VALUE, pool);
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ks_assert(bsmgr->subscriptions);
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ks_hash_create(&bsmgr->subscriptions_cleanup, KS_HASH_MODE_CASE_INSENSITIVE, KS_HASH_FLAG_RWLOCK | KS_HASH_FLAG_DUP_CHECK | KS_HASH_FLAG_FREE_KEY | KS_HASH_FLAG_FREE_VALUE, pool);
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ks_assert(bsmgr->subscriptions_cleanup);
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ks_pool_set_cleanup(bsmgr, NULL, blade_subscriptionmgr_cleanup);
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*bsmgrP = bsmgr;
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return KS_STATUS_SUCCESS;
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}
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KS_DECLARE(ks_status_t) blade_subscriptionmgr_destroy(blade_subscriptionmgr_t **bsmgrP)
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{
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blade_subscriptionmgr_t *bsmgr = NULL;
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ks_pool_t *pool;
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ks_assert(bsmgrP);
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ks_assert(*bsmgrP);
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bsmgr = *bsmgrP;
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*bsmgrP = NULL;
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pool = ks_pool_get(bsmgr);
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ks_pool_close(&pool);
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return KS_STATUS_SUCCESS;
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}
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KS_DECLARE(blade_handle_t *) blade_subscriptionmgr_handle_get(blade_subscriptionmgr_t *bsmgr)
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{
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ks_assert(bsmgr);
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return bsmgr->handle;
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}
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//KS_DECLARE(blade_session_t *) blade_subscriptionmgr_route_lookup(blade_routemgr_t *brmgr, const char *target)
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//{
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// blade_session_t *bs = NULL;
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// const char *router = NULL;
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//
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// ks_assert(brmgr);
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// ks_assert(target);
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//
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// router = (const char *)ks_hash_search(brmgr->routes, (void *)target, KS_READLOCKED);
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// if (router) bs = blade_handle_sessions_lookup(brmgr->handle, router);
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// ks_hash_read_unlock(brmgr->routes);
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//
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// return bs;
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//}
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KS_DECLARE(blade_subscription_t *) blade_subscriptionmgr_subscription_lookup(blade_subscriptionmgr_t *bsmgr, const char *protocol, const char *channel)
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{
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blade_subscription_t *bsub = NULL;
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char *key = NULL;
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ks_assert(bsmgr);
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ks_assert(protocol);
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ks_assert(channel);
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key = ks_psprintf(ks_pool_get(bsmgr), "%s:%s", protocol, channel);
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bsub = (blade_subscription_t *)ks_hash_search(bsmgr->subscriptions, (void *)key, KS_READLOCKED);
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// @todo if (bsub) blade_subscription_read_lock(bsub);
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ks_hash_read_unlock(bsmgr->subscriptions);
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ks_pool_free(&key);
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return bsub;
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}
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KS_DECLARE(ks_status_t) blade_subscriptionmgr_subscription_remove(blade_subscriptionmgr_t *bsmgr, const char *protocol, const char *channel)
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{
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ks_pool_t *pool = NULL;
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char *bsub_key = NULL;
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blade_subscription_t *bsub = NULL;
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ks_hash_t *subscribers = NULL;
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ks_hash_t *subscriptions = NULL;
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ks_assert(bsmgr);
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ks_assert(protocol);
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ks_assert(channel);
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pool = ks_pool_get(bsmgr);
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bsub_key = ks_psprintf(pool, "%s:%s", protocol, channel);
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ks_hash_write_lock(bsmgr->subscriptions);
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bsub = (blade_subscription_t *)ks_hash_search(bsmgr->subscriptions, (void *)bsub_key, KS_UNLOCKED);
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subscribers = blade_subscription_subscribers_get(bsub);
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ks_assert(subscribers);
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for (ks_hash_iterator_t *it = ks_hash_first(subscribers, KS_UNLOCKED); it; it = ks_hash_next(&it)) {
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void *key = NULL;
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void *value = NULL;
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ks_hash_this(it, (const void **)&key, NULL, &value);
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subscriptions = (ks_hash_t *)ks_hash_search(bsmgr->subscriptions_cleanup, key, KS_UNLOCKED);
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ks_log(KS_LOG_DEBUG, "Subscriber Removed: %s from protocol %s, channel %s\n", key, protocol, channel);
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ks_hash_remove(subscriptions, bsub_key);
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if (ks_hash_count(subscriptions) == 0) {
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ks_hash_remove(bsmgr->subscriptions_cleanup, key);
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}
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}
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ks_log(KS_LOG_DEBUG, "Subscription Removed: %s from %s\n", channel, protocol);
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ks_hash_remove(bsmgr->subscriptions, (void *)bsub_key);
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ks_hash_write_unlock(bsmgr->subscriptions);
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ks_pool_free(&bsub_key);
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return KS_STATUS_SUCCESS;
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}
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KS_DECLARE(ks_bool_t) blade_subscriptionmgr_subscriber_add(blade_subscriptionmgr_t *bsmgr, blade_subscription_t **bsubP, const char *protocol, const char *channel, const char *subscriber)
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{
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ks_pool_t *pool = NULL;
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char *key = NULL;
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blade_subscription_t *bsub = NULL;
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ks_hash_t *bsub_cleanup = NULL;
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ks_bool_t propagate = KS_FALSE;
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ks_assert(bsmgr);
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ks_assert(protocol);
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ks_assert(channel);
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ks_assert(subscriber);
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pool = ks_pool_get(bsmgr);
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key = ks_psprintf(pool, "%s:%s", protocol, channel);
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ks_hash_write_lock(bsmgr->subscriptions);
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bsub = (blade_subscription_t *)ks_hash_search(bsmgr->subscriptions, (void *)key, KS_UNLOCKED);
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if (!bsub) {
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blade_subscription_create(&bsub, pool, protocol, channel);
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ks_assert(bsub);
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ks_hash_insert(bsmgr->subscriptions, (void *)ks_pstrdup(pool, key), (void *)bsub);
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propagate = KS_TRUE;
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}
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bsub_cleanup = (ks_hash_t *)ks_hash_search(bsmgr->subscriptions_cleanup, (void *)subscriber, KS_UNLOCKED);
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if (!bsub_cleanup) {
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ks_hash_create(&bsub_cleanup, KS_HASH_MODE_CASE_INSENSITIVE, KS_HASH_FLAG_RWLOCK | KS_HASH_FLAG_DUP_CHECK | KS_HASH_FLAG_FREE_KEY, pool);
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ks_assert(bsub_cleanup);
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ks_log(KS_LOG_DEBUG, "Subscription Added: %s to %s\n", channel, protocol);
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ks_hash_insert(bsmgr->subscriptions_cleanup, (void *)ks_pstrdup(pool, subscriber), (void *)bsub_cleanup);
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}
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ks_hash_insert(bsub_cleanup, (void *)ks_pstrdup(pool, key), (void *)KS_TRUE);
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blade_subscription_subscribers_add(bsub, subscriber);
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ks_hash_write_unlock(bsmgr->subscriptions);
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ks_log(KS_LOG_DEBUG, "Subscriber Added: %s to protocol %s, channel %s\n", subscriber, protocol, channel);
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ks_pool_free(&key);
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if (bsubP) *bsubP = bsub;
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return propagate;
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}
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KS_DECLARE(ks_bool_t) blade_subscriptionmgr_subscriber_remove(blade_subscriptionmgr_t *bsmgr, blade_subscription_t **bsubP, const char *protocol, const char *channel, const char *subscriber)
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{
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char *key = NULL;
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blade_subscription_t *bsub = NULL;
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ks_hash_t *bsub_cleanup = NULL;
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ks_bool_t propagate = KS_FALSE;
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ks_assert(bsmgr);
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ks_assert(protocol);
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ks_assert(channel);
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ks_assert(subscriber);
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key = ks_psprintf(ks_pool_get(bsmgr), "%s:%s", protocol, channel);
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ks_hash_write_lock(bsmgr->subscriptions);
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bsub = (blade_subscription_t *)ks_hash_search(bsmgr->subscriptions, (void *)key, KS_UNLOCKED);
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if (bsub) {
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bsub_cleanup = (ks_hash_t *)ks_hash_search(bsmgr->subscriptions_cleanup, (void *)subscriber, KS_UNLOCKED);
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if (bsub_cleanup) {
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ks_hash_remove(bsub_cleanup, key);
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if (ks_hash_count(bsub_cleanup) == 0) {
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ks_hash_remove(bsmgr->subscriptions_cleanup, (void *)subscriber);
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}
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ks_log(KS_LOG_DEBUG, "Subscriber Removed: %s from protocol %s, channel %s\n", subscriber, protocol, channel);
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blade_subscription_subscribers_remove(bsub, subscriber);
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if (ks_hash_count(blade_subscription_subscribers_get(bsub)) == 0) {
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ks_log(KS_LOG_DEBUG, "Subscription Removed: %s from %s\n", channel, protocol);
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ks_hash_remove(bsmgr->subscriptions, (void *)key);
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propagate = KS_TRUE;
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}
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}
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}
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ks_hash_write_unlock(bsmgr->subscriptions);
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ks_pool_free(&key);
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if (bsubP) *bsubP = bsub;
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return propagate;
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}
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KS_DECLARE(void) blade_subscriptionmgr_purge(blade_subscriptionmgr_t *bsmgr, const char *target)
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{
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ks_pool_t *pool = NULL;
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ks_bool_t unsubbed = KS_FALSE;
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ks_assert(bsmgr);
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ks_assert(target);
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pool = ks_pool_get(bsmgr);
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while (!unsubbed) {
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ks_hash_t *subscriptions = NULL;
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const char *protocol = NULL;
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const char *channel = NULL;
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ks_hash_read_lock(bsmgr->subscriptions);
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subscriptions = (ks_hash_t *)ks_hash_search(bsmgr->subscriptions_cleanup, (void *)target, KS_UNLOCKED);
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if (!subscriptions) unsubbed = KS_TRUE;
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else {
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void *key = NULL;
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void *value = NULL;
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blade_subscription_t *bsub = NULL;
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ks_hash_iterator_t *it = ks_hash_first(subscriptions, KS_UNLOCKED);
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ks_assert(it);
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ks_hash_this(it, (const void **)&key, NULL, &value);
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bsub = (blade_subscription_t *)ks_hash_search(bsmgr->subscriptions, key, KS_UNLOCKED);
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ks_assert(bsub);
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// @note allocate these to avoid lifecycle issues when the last subscriber is removed causing the subscription to be removed
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protocol = ks_pstrdup(pool, blade_subscription_protocol_get(bsub));
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channel = ks_pstrdup(pool, blade_subscription_channel_get(bsub));
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}
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ks_hash_read_unlock(bsmgr->subscriptions);
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if (!unsubbed) {
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blade_subscriptionmgr_subscriber_remove(bsmgr, NULL, protocol, channel, target);
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ks_pool_free(&protocol);
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ks_pool_free(&channel);
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}
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}
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}
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KS_DECLARE(ks_status_t) blade_subscriptionmgr_broadcast(blade_subscriptionmgr_t *bsmgr, blade_rpcbroadcast_command_t command, const char *excluded_sessionid, const char *protocol, const char *channel, const char *event, cJSON *params, blade_rpc_response_callback_t callback, void *data)
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{
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ks_pool_t *pool = NULL;
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const char *bsub_key = NULL;
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blade_subscription_t *bsub = NULL;
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blade_session_t *bs = NULL;
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cJSON *req = NULL;
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cJSON *req_params = NULL;
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ks_hash_t *routers = NULL;
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ks_hash_t *channels = NULL;
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ks_assert(bsmgr);
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ks_assert(protocol);
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pool = ks_pool_get(bsmgr);
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switch (command) {
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case BLADE_RPCBROADCAST_COMMAND_EVENT:
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ks_assert(channel);
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ks_assert(event);
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case BLADE_RPCBROADCAST_COMMAND_CHANNEL_REMOVE:
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ks_assert(channel);
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bsub_key = ks_psprintf(pool, "%s:%s", protocol, channel);
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ks_hash_read_lock(bsmgr->subscriptions);
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bsub = (blade_subscription_t *)ks_hash_search(bsmgr->subscriptions, (void *)bsub_key, KS_UNLOCKED);
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if (bsub) {
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ks_hash_t *subscribers = blade_subscription_subscribers_get(bsub);
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ks_assert(subscribers);
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for (ks_hash_iterator_t *it = ks_hash_first(subscribers, KS_UNLOCKED); it; it = ks_hash_next(&it)) {
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void *key = NULL;
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void *value = NULL;
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ks_hash_this(it, (const void **)&key, NULL, &value);
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//if (excluded_nodeid && !ks_safe_strcasecmp(excluded_nodeid, (const char *)key)) continue;
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//if (blade_routemgr_local_check(blade_handle_routemgr_get(bsmgr->handle), (const char *)key)) continue;
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bs = blade_routemgr_route_lookup(blade_handle_routemgr_get(bsmgr->handle), (const char *)key);
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if (bs) {
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if (excluded_sessionid && !ks_safe_strcasecmp(excluded_sessionid, blade_session_id_get(bs))) continue;
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if (!routers) ks_hash_create(&routers, KS_HASH_MODE_CASE_INSENSITIVE, KS_HASH_FLAG_NOLOCK | KS_HASH_FLAG_DUP_CHECK, pool);
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if (!ks_hash_search(routers, (void *)blade_session_id_get(bs), KS_UNLOCKED)) ks_hash_insert(routers, (void *)blade_session_id_get(bs), (void *)bs);
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else blade_session_read_unlock(bs);
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}
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}
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if (command == BLADE_RPCBROADCAST_COMMAND_CHANNEL_REMOVE) {
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if (!channels) ks_hash_create(&channels, KS_HASH_MODE_CASE_INSENSITIVE, KS_HASH_FLAG_NOLOCK | KS_HASH_FLAG_DUP_CHECK, pool);
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ks_hash_insert(channels, (void *)channel, (void *)KS_TRUE);
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}
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}
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ks_hash_read_unlock(bsmgr->subscriptions);
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break;
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case BLADE_RPCBROADCAST_COMMAND_PROTOCOL_REMOVE:
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bsub_key = ks_pstrdup(pool, protocol);
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ks_hash_read_lock(bsmgr->subscriptions);
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for (ks_hash_iterator_t *it = ks_hash_first(bsmgr->subscriptions, KS_UNLOCKED); it; it = ks_hash_next(&it)) {
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void *key = NULL;
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void *value = NULL;
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ks_hash_this(it, (const void **)&key, NULL, &value);
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bsub = (blade_subscription_t *)value;
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if (ks_stristr(bsub_key, (const char *)key) == (const char *)key) {
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ks_hash_t *subscribers = blade_subscription_subscribers_get(bsub);
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ks_assert(subscribers);
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for (ks_hash_iterator_t *it2 = ks_hash_first(subscribers, KS_UNLOCKED); it2; it2 = ks_hash_next(&it2)) {
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void *key2 = NULL;
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void *value2 = NULL;
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ks_hash_this(it2, (const void **)&key2, NULL, &value2);
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//if (excluded_nodeid && !ks_safe_strcasecmp(excluded_nodeid, (const char *)key2)) continue;
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//if (blade_routemgr_local_check(blade_handle_routemgr_get(bsmgr->handle), (const char *)key2)) continue;
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bs = blade_routemgr_route_lookup(blade_handle_routemgr_get(bsmgr->handle), (const char *)key2);
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if (bs) {
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if (excluded_sessionid && !ks_safe_strcasecmp(excluded_sessionid, blade_session_id_get(bs))) continue;
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if (!routers) ks_hash_create(&routers, KS_HASH_MODE_CASE_INSENSITIVE, KS_HASH_FLAG_NOLOCK | KS_HASH_FLAG_DUP_CHECK, pool);
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if (!ks_hash_search(routers, (void *)blade_session_id_get(bs), KS_UNLOCKED)) ks_hash_insert(routers, (void *)blade_session_id_get(bs), (void *)bs);
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else blade_session_read_unlock(bs);
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}
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}
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if (!channels) ks_hash_create(&channels, KS_HASH_MODE_CASE_INSENSITIVE, KS_HASH_FLAG_NOLOCK | KS_HASH_FLAG_DUP_CHECK, pool);
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ks_hash_insert(channels, (void *)blade_subscription_channel_get(bsub), (void *)KS_TRUE);
|
|
}
|
|
}
|
|
|
|
ks_hash_read_unlock(bsmgr->subscriptions);
|
|
break;
|
|
default: return KS_STATUS_ARG_INVALID;
|
|
}
|
|
|
|
|
|
bs = blade_sessionmgr_upstream_lookup(blade_handle_sessionmgr_get(bsmgr->handle));
|
|
if (bs) {
|
|
if (!excluded_sessionid || ks_safe_strcasecmp(excluded_sessionid, blade_session_id_get(bs))) {
|
|
if (!routers) ks_hash_create(&routers, KS_HASH_MODE_CASE_INSENSITIVE, KS_HASH_FLAG_NOLOCK | KS_HASH_FLAG_DUP_CHECK, pool);
|
|
ks_hash_insert(routers, (void *)blade_session_id_get(bs), (void *)bs);
|
|
}
|
|
else blade_session_read_unlock(bs);
|
|
}
|
|
|
|
if (channels) {
|
|
for (ks_hash_iterator_t *it = ks_hash_first(channels, KS_UNLOCKED); it; it = ks_hash_next(&it)) {
|
|
void *key = NULL;
|
|
void *value = NULL;
|
|
|
|
ks_hash_this(it, (const void **)&key, NULL, &value);
|
|
|
|
blade_subscriptionmgr_subscription_remove(bsmgr, protocol, (const char *)key);
|
|
}
|
|
ks_hash_destroy(&channels);
|
|
}
|
|
|
|
if (routers) {
|
|
for (ks_hash_iterator_t *it = ks_hash_first(routers, KS_UNLOCKED); it; it = ks_hash_next(&it)) {
|
|
void *key = NULL;
|
|
void *value = NULL;
|
|
|
|
ks_hash_this(it, (const void **)&key, NULL, &value);
|
|
|
|
bs = (blade_session_t *)value;
|
|
|
|
blade_rpc_request_raw_create(pool, &req, &req_params, NULL, "blade.broadcast");
|
|
cJSON_AddNumberToObject(req_params, "command", command);
|
|
cJSON_AddStringToObject(req_params, "protocol", protocol);
|
|
if (channel) cJSON_AddStringToObject(req_params, "channel", channel);
|
|
if (event) cJSON_AddStringToObject(req_params, "event", event);
|
|
if (params) cJSON_AddItemToObject(req_params, "params", cJSON_Duplicate(params, 1));
|
|
|
|
ks_log(KS_LOG_DEBUG, "Broadcasting: protocol %s, channel %s through %s\n", protocol, channel, blade_session_id_get(bs));
|
|
|
|
blade_session_send(bs, req, 0, callback, data);
|
|
|
|
cJSON_Delete(req);
|
|
|
|
blade_session_read_unlock(bs);
|
|
}
|
|
ks_hash_destroy(&routers);
|
|
}
|
|
|
|
ks_pool_free(&bsub_key);
|
|
|
|
return KS_STATUS_SUCCESS;
|
|
}
|
|
|
|
/* 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:
|
|
*/
|