/*
* performs (blocking) etcd_watch calls to check for
* changing discovery endpoint information within etcd.
*/
static void* etcdWatcher_run(void* data) {
etcd_watcher_pt watcher = (etcd_watcher_pt) data;
time_t timeBeforeWatch = time(NULL);
static char rootPath[MAX_ROOTNODE_LENGTH];
int highestModified = 0;
bundle_context_pt context = watcher->discovery->context;
etcdWatcher_addAlreadyExistingWatchpoints(watcher->discovery, &highestModified);
etcdWatcher_getRootPath(context, &rootPath[0]);
while (watcher->running) {
char rkey[MAX_KEY_LENGTH];
char value[MAX_VALUE_LENGTH];
char preValue[MAX_VALUE_LENGTH];
char action[MAX_ACTION_LENGTH];
int modIndex;
if (etcd_watch(rootPath, highestModified + 1, &action[0], &preValue[0], &value[0], &rkey[0], &modIndex) == true) {
if (strcmp(action, "set") == 0) {
etcdWatcher_addEntry(watcher, &rkey[0], &value[0]);
} else if (strcmp(action, "delete") == 0) {
etcdWatcher_removeEntry(watcher, &rkey[0], &value[0]);
} else if (strcmp(action, "expire") == 0) {
etcdWatcher_removeEntry(watcher, &rkey[0], &value[0]);
} else if (strcmp(action, "update") == 0) {
etcdWatcher_addEntry(watcher, &rkey[0], &value[0]);
} else {
logHelper_log(*watcher->loghelper, OSGI_LOGSERVICE_INFO, "Unexpected action: %s", action);
}
highestModified = modIndex;
}
// update own framework uuid
if (time(NULL) - timeBeforeWatch > (DEFAULT_ETCD_TTL/2)) {
etcdWatcher_addOwnFramework(watcher);
timeBeforeWatch = time(NULL);
}
}
return NULL;
}
/*
* performs (blocking) etcd_watch calls to check for
* changing discovery endpoint information within etcd.
*/
static void* etcdWatcher_run(void* data) {
etcd_watcher_pt watcher = (etcd_watcher_pt) data;
time_t timeBeforeWatch = time(NULL);
char rootPath[MAX_ROOTNODE_LENGTH];
int highestModified = 0;
node_discovery_pt node_discovery = watcher->node_discovery;
bundle_context_pt context = node_discovery->context;
memset(rootPath, 0, MAX_ROOTNODE_LENGTH);
etcdWatcher_addAlreadyExistingNodes(node_discovery, &highestModified);
etcdWatcher_getRootPath(context, rootPath);
while ((celixThreadMutex_lock(&watcher->watcherLock) == CELIX_SUCCESS) && watcher->running) {
char rkey[MAX_KEY_LENGTH];
char value[MAX_VALUE_LENGTH];
char preValue[MAX_VALUE_LENGTH];
char action[MAX_ACTION_LENGTH];
int modIndex;
celixThreadMutex_unlock(&watcher->watcherLock);
if (etcd_watch(rootPath, highestModified + 1, &action[0], &preValue[0], &value[0], &rkey[0], &modIndex) == true) {
if ((strcmp(action, "set") == 0) || (strcmp(action, "create") == 0)) {
node_description_pt nodeDescription = NULL;
celix_status_t status = etcdWatcher_getWiringEndpointFromKey(node_discovery, &rkey[0], &value[0], &nodeDescription);
if (status == CELIX_SUCCESS) {
node_discovery_addNode(node_discovery, nodeDescription);
}
} else if (strcmp(action, "delete") == 0) {
node_description_pt nodeDescription = NULL;
celix_status_t status = etcdWatcher_getWiringEndpointFromKey(node_discovery, &rkey[0], NULL, &nodeDescription);
if (status == CELIX_SUCCESS) {
node_discovery_removeNode(node_discovery, nodeDescription);
}
} else if (strcmp(action, "expire") == 0) {
node_description_pt nodeDescription = NULL;
celix_status_t status = etcdWatcher_getWiringEndpointFromKey(node_discovery, &rkey[0], NULL, &nodeDescription);
if (status == CELIX_SUCCESS) {
node_discovery_removeNode(node_discovery, nodeDescription);
}
} else if (strcmp(action, "update") == 0) {
node_description_pt nodeDescription = NULL;
celix_status_t status = etcdWatcher_getWiringEndpointFromKey(node_discovery, &rkey[0], &value[0], &nodeDescription);
if (status == CELIX_SUCCESS) {
node_discovery_addNode(node_discovery, nodeDescription);
}
} else {
fw_log(logger, OSGI_FRAMEWORK_LOG_INFO, "Unexpected action: %s", action);
}
highestModified = modIndex;
}
/* prevent busy waiting, in case etcd_watch returns false */
else if (time(NULL) - timeBeforeWatch <= (DEFAULT_ETCD_TTL / 4)) {
sleep(DEFAULT_ETCD_TTL / 4);
}
// update own framework uuid
if (time(NULL) - timeBeforeWatch > (DEFAULT_ETCD_TTL / 4)) {
etcdWatcher_addOwnNode(watcher);
// perform additional full-sync
etcdWatcher_addAlreadyExistingNodes(node_discovery, &highestModified);
timeBeforeWatch = time(NULL);
}
}
if (watcher->running == false) {
celixThreadMutex_unlock(&watcher->watcherLock);
}
return NULL;
}
