void get_workers() {
zoo_awget_children(zh,
"/workers",
workers_watcher,
NULL,
workers_completion,
NULL);
}
/**
*
* Get the list of tasks.
*
*/
void get_tasks () {
LOG_DEBUG(("Getting tasks"));
zoo_awget_children(zh,
"/tasks",
tasks_watcher,
NULL,
tasks_completion,
NULL);
}
static void zookeeper_get_node_completion(int rc, const char *value,
int value_len,
const struct Stat *stat,
const void *arg) {
int status;
char *address = NULL;
zookeeper_resolver *r = (zookeeper_resolver *)arg;
r->resolved_addrs = NULL;
r->resolved_total = 0;
r->resolved_num = 0;
if (rc != 0) {
gpr_log(GPR_ERROR, "Error in getting zookeeper node %s", r->name);
return;
}
/** If zookeeper node of path r->name does not have address
(i.e. service node), get its children */
address = zookeeper_parse_address(value, (size_t)value_len);
if (address != NULL) {
r->resolved_addrs = gpr_malloc(sizeof(grpc_resolved_addresses));
r->resolved_addrs->addrs = NULL;
r->resolved_addrs->naddrs = 0;
r->resolved_total = 1;
/** Further resolves address by DNS */
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_resolve_address(&exec_ctx, address, NULL, zookeeper_dns_resolved, r);
gpr_free(address);
grpc_exec_ctx_finish(&exec_ctx);
return;
}
status = zoo_awget_children(r->zookeeper_handle, r->name, zookeeper_watcher,
r, zookeeper_get_children_completion, r);
if (status != 0) {
gpr_log(GPR_ERROR, "Error in getting zookeeper children of %s", r->name);
}
}
