read something from ZK

// gcc -Wall -I/usr/include/zookeeper -lzookeeper_mt get.c -o get

#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h> 
#include <time.h>
#include <unistd.h>

#include "zookeeper.h" 


void watcher(zhandle_t *, int, int, const char *, void *);

void log_msg(const char *msg) {
  printf("%s\n", msg);
}

void error(const char *msg, int rc) {
  printf("%s\n", msg);
  exit(rc);
}

void watcher(zhandle_t *zzh, int type, int state, const char *path,
             void *watcherCtx) {
  printf("watcher has state = %d\n", state);
}

int main(int argc, char **argv)
{
  char *host, *path;
  char buf[1024];
  zhandle_t *zh;
  int len = 1024;

  if (argc != 3)
    error("Gimme host/path", 1);

  host = argv[1];
  path = argv[2];

  zh = zookeeper_init(host, watcher, 1000, 0, 0, 0);
  if (!zh)
    error("Failed to connect", errno);

  while (zoo_state(zh) != ZOO_CONNECTED_STATE) {
    sleep(1);
  }

  zoo_get(zh, path, 0, buf, &len, NULL);

  printf("%s\n", buf);

  return 0;
}