// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
// vim: ts=8 sw=2 smarttab
/*
 * Ceph - scalable distributed file system
 *
 * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
 *
 * This is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 2.1, as published by the Free Software 
 * Foundation.  See file COPYING.
 * 
 */

#include "include/types.h"
#include "include/rados/librados.hpp"

using namespace librados;

#include <iostream>

#include <errno.h>
#include <stdlib.h>
#include <time.h>

#pragma GCC diagnostic ignored "-Wpragmas"
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"

void buf_to_hex(const unsigned char *buf, int len, char *str)
{
  str[0] = '\0';
  for (int i = 0; i < len; i++) {
    sprintf(&str[i*2], "%02x", (int)buf[i]);
  }
}

class C_Watch : public WatchCtx {
public:
  C_Watch() {}
  void notify(uint8_t opcode, uint64_t ver, bufferlist& bl) override {
    cout << "C_Watch::notify() opcode=" << (int)opcode << " ver=" << ver << std::endl;
  }
};

void testradospp_milestone(void)
{
  int c;
  cout << "*** press enter to continue ***" << std::endl;
  while ((c = getchar()) != EOF) {
    if (c == '\n')
      break;
  }
}

int main(int argc, const char **argv) 
{
  Rados rados;
  if (rados.init(NULL) < 0) {
     cerr << "couldn't initialize rados!" << std::endl;
     exit(1);
  }

  if (rados.conf_read_file(NULL)) {
     cerr << "couldn't read configuration file." << std::endl;
     exit(1);
  }
  rados.conf_parse_argv(argc, argv);

  if (!rados.conf_set("config option that doesn't exist",
                     "some random value")) {
    printf("error: succeeded in setting nonexistent config option\n");
    exit(1);
  }
  if (rados.conf_set("log to stderr", "true")) {
    printf("error: error setting log_to_stderr\n");
    exit(1);
  }
  std::string tmp;
  if (rados.conf_get("log to stderr", tmp)) {
    printf("error: failed to read log_to_stderr from config\n");
    exit(1);
  }
  if (tmp != "true") {
    printf("error: new setting for log_to_stderr failed to take effect.\n");
    exit(1);
  }

  if (rados.connect()) {
    printf("error connecting\n");
    exit(1);
  }

  cout << "rados_initialize completed" << std::endl;
  testradospp_milestone();

  time_t tm;
  bufferlist bl, bl2, blf;
  char buf[128];

  time(&tm);
  snprintf(buf, 128, "%s", ctime(&tm));
  bl.append(buf, strlen(buf));
  blf.append(buf, 16);

  const char *oid = "bar";

  int r = rados.pool_create("foo");
  cout << "pool_create result = " << r << std::endl;

  IoCtx io_ctx;
  r = rados.ioctx_create("foo", io_ctx);
  cout << "ioctx_create result = " << r << std::endl;

  r = io_ctx.write(oid, bl, bl.length(), 0);
  uint64_t objver = io_ctx.get_last_version();
  assert(objver > 0);
  cout << "io_ctx.write returned " << r << " last_ver=" << objver << std::endl;

  uint64_t stat_size;
  time_t stat_mtime;
  r = io_ctx.stat(oid, &stat_size, &stat_mtime);
  cout << "io_ctx.stat returned " << r << " size = " << stat_size << " mtime = " << stat_mtime << std::endl;

  r = io_ctx.stat(oid, NULL, NULL);
  cout << "io_ctx.stat(does_not_exist) = " << r << std::endl;

  uint64_t handle;
  C_Watch wc;
  r = io_ctx.watch(oid, objver, &handle, &wc);
  cout << "io_ctx.watch returned " << r << std::endl;

  testradospp_milestone();
  io_ctx.set_notify_timeout(7);
  bufferlist notify_bl;
  r = io_ctx.notify(oid, objver, notify_bl);
  cout << "io_ctx.notify returned " << r << std::endl;
  testradospp_milestone();

  r = io_ctx.notify(oid, objver, notify_bl);
  cout << "io_ctx.notify returned " << r << std::endl;
  testradospp_milestone();

  r = io_ctx.unwatch(oid, handle);
  cout << "io_ctx.unwatch returned " << r << std::endl;
  testradospp_milestone();

  r = io_ctx.notify(oid, objver, notify_bl);
  cout << "io_ctx.notify returned " << r << std::endl;
  testradospp_milestone();
  io_ctx.set_assert_version(objver);

  r = io_ctx.write(oid, bl, bl.length() - 1, 0);
  cout << "io_ctx.write returned " << r << std::endl;

  r = io_ctx.write(oid, bl, bl.length() - 2, 0);
  cout << "io_ctx.write returned " << r << std::endl;
  r = io_ctx.write(oid, bl, bl.length() - 3, 0);
  cout << "rados.write returned " << r << std::endl;
  r = io_ctx.append(oid, bl, bl.length());
  cout << "rados.write returned " << r << std::endl;
  r = io_ctx.write_full(oid, blf);
  cout << "rados.write_full returned " << r << std::endl;
  r = io_ctx.read(oid, bl, bl.length(), 0);
  cout << "rados.read returned " << r << std::endl;
  r = io_ctx.trunc(oid, 8);
  cout << "rados.trunc returned " << r << std::endl;
  r = io_ctx.read(oid, bl, bl.length(), 0);
  cout << "rados.read returned " << r << std::endl;
  r = io_ctx.exec(oid, "crypto", "md5", bl, bl2);
  cout << "exec returned " << r <<  " buf size=" << bl2.length() << std::endl;
  const unsigned char *md5 = (const unsigned char *)bl2.c_str();
  char md5_str[bl2.length()*2 + 1];
  buf_to_hex(md5, bl2.length(), md5_str);
  cout << "md5 result=" << md5_str << std::endl;

  // test assert_version
  r = io_ctx.read(oid, bl, 0, 1);
  assert(r >= 0);
  uint64_t v = io_ctx.get_last_version();
  cout << oid << " version is " << v << std::endl;
  assert(v > 0);
  io_ctx.set_assert_version(v);
  r = io_ctx.read(oid, bl, 0, 1);
  assert(r >= 0);
  io_ctx.set_assert_version(v - 1);
  r = io_ctx.read(oid, bl, 0, 1);
  assert(r == -ERANGE);
  io_ctx.set_assert_version(v + 1);
  r = io_ctx.read(oid, bl, 0, 1);
  assert(r == -EOVERFLOW);

  r = io_ctx.exec(oid, "crypto", "sha1", bl, bl2);
  cout << "exec returned " << r << std::endl;
  const unsigned char *sha1 = (const unsigned char *)bl2.c_str();
  char sha1_str[bl2.length()*2 + 1];
  buf_to_hex(sha1, bl2.length(), sha1_str);
  cout << "sha1 result=" << sha1_str << std::endl;

  r = io_ctx.exec(oid, "acl", "set", bl, bl2);
  cout << "exec (set) returned " << r << std::endl;
  r = io_ctx.exec(oid, "acl", "get", bl, bl2);
  cout << "exec (get) returned " << r << std::endl;
  if (bl2.length() > 0) {
    cout << "attr=" << bl2.c_str() << std::endl;
  }

  int size = io_ctx.read(oid, bl2, 128, 0);
  if (size <= 0) {
    cout << "failed to read oid " << oid << "." << std::endl;
    exit(1);
  }
  if (size > 4096) {
    cout << "read too many bytes from oid " << oid << "." << std::endl;
    exit(1);
  }
  char rbuf[size + 1];
  memcpy(rbuf, bl2.c_str(), size);
  rbuf[size] = '\0';
  cout << "read result='" << rbuf << "'" << std::endl;
  cout << "size=" << size << std::endl;

  const char *oid2 = "jjj10.rbd";
  r = io_ctx.exec(oid2, "rbd", "snap_list", bl, bl2);
  cout << "snap_list result=" << r << std::endl;
  r = io_ctx.exec(oid2, "rbd", "snap_add", bl, bl2);
  cout << "snap_add result=" << r << std::endl;

  if (r > 0) {
    char *s = bl2.c_str();
    for (int i=0; i<r; i++, s += strlen(s) + 1)
      cout << s << std::endl;
  }

  cout << "compound operation..." << std::endl;
  ObjectWriteOperation o;
  o.write(0, bl);
  o.setxattr("foo", bl2);
  r = io_ctx.operate(oid, &o);
  cout << "operate result=" << r << std::endl;

  cout << "cmpxattr" << std::endl;
  bufferlist val;
  val.append("foo");
  r = io_ctx.setxattr(oid, "foo", val);
  assert(r >= 0);
  {
    ObjectReadOperation o;
    o.cmpxattr("foo", CEPH_OSD_CMPXATTR_OP_EQ, val);
    r = io_ctx.operate(oid, &o, &bl2);
    cout << " got " << r << " wanted >= 0" << std::endl;
    assert(r >= 0);
  }
  val.append("...");
  {
    ObjectReadOperation o;
    o.cmpxattr("foo", CEPH_OSD_CMPXATTR_OP_EQ, val);
    r = io_ctx.operate(oid, &o, &bl2);
    cout << " got " << r << " wanted " << -ECANCELED << " (-ECANCELED)" << std::endl;
    assert(r == -ECANCELED);
  }

  io_ctx.locator_set_key(string());

  cout << "iterating over objects..." << std::endl;
  int num_objs = 0;
  for (NObjectIterator iter = io_ctx.nobjects_begin();
       iter != io_ctx.nobjects_end(); ++iter) {
    num_objs++;
    cout << "'" << *iter << "'" << std::endl;
  }
  cout << "iterated over " << num_objs << " objects." << std::endl;
  map<string, bufferlist> attrset;
  io_ctx.getxattrs(oid, attrset);

  map<string, bufferlist>::iterator it;
  for (it = attrset.begin(); it != attrset.end(); ++it) {
    cout << "xattr: " << it->first << std::endl;
  }

  r = io_ctx.remove(oid);
  cout << "remove result=" << r << std::endl;

  r = rados.pool_delete("foo");
  cout << "pool_delete result=" << r << std::endl;

  rados.shutdown();

  return 0;
}

#pragma GCC diagnostic pop
#pragma GCC diagnostic warning "-Wpragmas"