// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*
// vim: ts=8 sw=2 smarttab

#include <climits>
#include <errno.h>

#include "gtest/gtest.h"

#include "include/rados/librados.hpp"
#include "include/encoding.h"
#include "include/err.h"
#include "include/scope_guard.h"
#include "test/librados/test_cxx.h"
#include "test/librados/testcase_cxx.h"

#include "crimson_utils.h"

using namespace librados;
using std::string;

typedef RadosTestPP LibRadosIoPP;
typedef RadosTestECPP LibRadosIoECPP;

TEST_F(LibRadosIoPP, TooBigPP) {
  IoCtx ioctx;
  bufferlist bl;
  ASSERT_EQ(-E2BIG, ioctx.write("foo", bl, UINT_MAX, 0));
  ASSERT_EQ(-E2BIG, ioctx.append("foo", bl, UINT_MAX));
  // ioctx.write_full no way to overflow bl.length()
  ASSERT_EQ(-E2BIG, ioctx.writesame("foo", bl, UINT_MAX, 0));
}

TEST_F(LibRadosIoPP, SimpleWritePP) {
  char buf[128];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));
  ioctx.set_namespace("nspace");
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));
}

TEST_F(LibRadosIoPP, ReadOpPP) {
  char buf[128];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));

  {
      bufferlist op_bl;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist op_bl;
      ObjectReadOperation op;
      op.read(0, 0, NULL, NULL); //len=0 mean read the whole object data.
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl, op_bl;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), read_bl.length());
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(read_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist op_bl;
      int rval = 1000;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, &rval);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, rval);
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl, op_bl;
      int rval = 1000;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl, &rval);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), read_bl.length());
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, rval);
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(read_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl1, read_bl2, op_bl;
      int rval1 = 1000, rval2 = 1002;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl1, &rval1);
      op.read(0, sizeof(buf), &read_bl2, &rval2);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), read_bl1.length());
      ASSERT_EQ(sizeof(buf), read_bl2.length());
      ASSERT_EQ(sizeof(buf) * 2, op_bl.length());
      ASSERT_EQ(0, rval1);
      ASSERT_EQ(0, rval2);
      ASSERT_EQ(0, memcmp(read_bl1.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(read_bl2.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(op_bl.c_str() + sizeof(buf), buf, sizeof(buf)));
  }

  {
      bufferlist op_bl;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, NULL));
      ASSERT_EQ(sizeof(buf), read_bl.length());
      ASSERT_EQ(0, memcmp(read_bl.c_str(), buf, sizeof(buf)));
  }

  {
      int rval = 1000;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, &rval);
      ASSERT_EQ(0, ioctx.operate("foo", &op, NULL));
      ASSERT_EQ(0, rval);
  }

  {
      bufferlist read_bl;
      int rval = 1000;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl, &rval);
      ASSERT_EQ(0, ioctx.operate("foo", &op, NULL));
      ASSERT_EQ(sizeof(buf), read_bl.length());
      ASSERT_EQ(0, rval);
      ASSERT_EQ(0, memcmp(read_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl1, read_bl2;
      int rval1 = 1000, rval2 = 1002;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl1, &rval1);
      op.read(0, sizeof(buf), &read_bl2, &rval2);
      ASSERT_EQ(0, ioctx.operate("foo", &op, NULL));
      ASSERT_EQ(sizeof(buf), read_bl1.length());
      ASSERT_EQ(sizeof(buf), read_bl2.length());
      ASSERT_EQ(0, rval1);
      ASSERT_EQ(0, rval2);
      ASSERT_EQ(0, memcmp(read_bl1.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(read_bl2.c_str(), buf, sizeof(buf)));
  }

  // read into a preallocated buffer with a cached crc
  {
      bufferlist op_bl;
      op_bl.append(std::string(sizeof(buf), 'x'));
      ASSERT_NE(op_bl.crc32c(0), bl.crc32c(0));  // cache 'x' crc

      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));

      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(op_bl.crc32c(0), bl.crc32c(0));
  }
}

TEST_F(LibRadosIoPP, SparseReadOpPP) {
  char buf[128];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));

  {
    std::map<uint64_t, uint64_t> extents;
    bufferlist read_bl;
    int rval = -1;
    ObjectReadOperation op;
    op.sparse_read(0, sizeof(buf), &extents, &read_bl, &rval);
    ASSERT_EQ(0, ioctx.operate("foo", &op, nullptr));
    ASSERT_EQ(0, rval);
    assert_eq_sparse(bl, extents, read_bl);
  }
  {
    bufferlist bl;
    bl.append(buf, sizeof(buf) / 2);

    std::map<uint64_t, uint64_t> extents;
    bufferlist read_bl;
    int rval = -1;
    ObjectReadOperation op;
    op.sparse_read(0, sizeof(buf), &extents, &read_bl, &rval, sizeof(buf) / 2, 1);
    ASSERT_EQ(0, ioctx.operate("foo", &op, nullptr));
    ASSERT_EQ(0, rval);
    assert_eq_sparse(bl, extents, read_bl);
  }
}

TEST_F(LibRadosIoPP, RoundTripPP) {
  char buf[128];
  Rados cluster;
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));
  bufferlist cl;
  ASSERT_EQ((int)sizeof(buf), ioctx.read("foo", cl, sizeof(buf), 0));
  ASSERT_EQ(0, memcmp(buf, cl.c_str(), sizeof(buf)));
}

TEST_F(LibRadosIoPP, RoundTripPP2)
{
  bufferlist bl;
  bl.append("ceph");
  ObjectWriteOperation write;
  write.write(0, bl);
  write.set_op_flags2(LIBRADOS_OP_FLAG_FADVISE_DONTNEED);
  ASSERT_EQ(0, ioctx.operate("foo", &write));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  read.set_op_flags2(LIBRADOS_OP_FLAG_FADVISE_NOCACHE|LIBRADOS_OP_FLAG_FADVISE_RANDOM);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "ceph", 4));
}

TEST_F(LibRadosIoPP, Checksum) {
  char buf[128];
  Rados cluster;
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));
  bufferlist init_value_bl;
  encode(static_cast<uint32_t>(-1), init_value_bl);
  bufferlist csum_bl;
  ASSERT_EQ(0, ioctx.checksum("foo", LIBRADOS_CHECKSUM_TYPE_CRC32C,
			      init_value_bl, sizeof(buf), 0, 0, &csum_bl));
  auto csum_bl_it = csum_bl.cbegin();
  uint32_t csum_count;
  decode(csum_count, csum_bl_it);
  ASSERT_EQ(1U, csum_count);
  uint32_t csum;
  decode(csum, csum_bl_it);
  ASSERT_EQ(bl.crc32c(-1), csum);
}

TEST_F(LibRadosIoPP, ReadIntoBufferlist) {

  // here we test reading into a non-empty bufferlist referencing existing
  // buffers

  char buf[128];
  Rados cluster;
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));
  bufferlist bl2;
  char buf2[sizeof(buf)];
  memset(buf2, 0xbb, sizeof(buf2));
  bl2.append(buffer::create_static(sizeof(buf2), buf2));
  ASSERT_EQ((int)sizeof(buf), ioctx.read("foo", bl2, sizeof(buf), 0));
  ASSERT_EQ(0, memcmp(buf, buf2, sizeof(buf)));
  ASSERT_EQ(0, memcmp(buf, bl2.c_str(), sizeof(buf)));
}

TEST_F(LibRadosIoPP, OverlappingWriteRoundTripPP) {
  char buf[128];
  char buf2[64];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl1, sizeof(buf), 0));
  memset(buf2, 0xdd, sizeof(buf2));
  bufferlist bl2;
  bl2.append(buf2, sizeof(buf2));
  ASSERT_EQ(0, ioctx.write("foo", bl2, sizeof(buf2), 0));
  bufferlist bl3;
  ASSERT_EQ((int)sizeof(buf), ioctx.read("foo", bl3, sizeof(buf), 0));
  ASSERT_EQ(0, memcmp(bl3.c_str(), buf2, sizeof(buf2)));
  ASSERT_EQ(0, memcmp(bl3.c_str() + sizeof(buf2), buf, sizeof(buf) - sizeof(buf2)));
}

TEST_F(LibRadosIoPP, WriteFullRoundTripPP) {
  char buf[128];
  char buf2[64];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl1, sizeof(buf), 0));
  memset(buf2, 0xdd, sizeof(buf2));
  bufferlist bl2;
  bl2.append(buf2, sizeof(buf2));
  ASSERT_EQ(0, ioctx.write_full("foo", bl2));
  bufferlist bl3;
  ASSERT_EQ((int)sizeof(buf2), ioctx.read("foo", bl3, sizeof(buf), 0));
  ASSERT_EQ(0, memcmp(bl3.c_str(), buf2, sizeof(buf2)));
}

TEST_F(LibRadosIoPP, WriteFullRoundTripPP2)
{
  bufferlist bl;
  bl.append("ceph");
  ObjectWriteOperation write;
  write.write_full(bl);
  write.set_op_flags2(LIBRADOS_OP_FLAG_FADVISE_NOCACHE);
  ASSERT_EQ(0, ioctx.operate("foo", &write));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  read.set_op_flags2(LIBRADOS_OP_FLAG_FADVISE_DONTNEED|LIBRADOS_OP_FLAG_FADVISE_RANDOM);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "ceph", 4));
}

TEST_F(LibRadosIoPP, AppendRoundTripPP) {
  char buf[64];
  char buf2[64];
  memset(buf, 0xde, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  memset(buf2, 0xad, sizeof(buf2));
  bufferlist bl2;
  bl2.append(buf2, sizeof(buf2));
  ASSERT_EQ(0, ioctx.append("foo", bl2, sizeof(buf2)));
  bufferlist bl3;
  ASSERT_EQ((int)(sizeof(buf) + sizeof(buf2)),
	    ioctx.read("foo", bl3, (sizeof(buf) + sizeof(buf2)), 0));
  const char *bl3_str = bl3.c_str();
  ASSERT_EQ(0, memcmp(bl3_str, buf, sizeof(buf)));
  ASSERT_EQ(0, memcmp(bl3_str + sizeof(buf), buf2, sizeof(buf2)));
}

TEST_F(LibRadosIoPP, TruncTestPP) {
  char buf[128];
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl, sizeof(buf)));
  ASSERT_EQ(0, ioctx.trunc("foo", sizeof(buf) / 2));
  bufferlist bl2;
  ASSERT_EQ((int)(sizeof(buf)/2), ioctx.read("foo", bl2, sizeof(buf), 0));
  ASSERT_EQ(0, memcmp(bl2.c_str(), buf, sizeof(buf)/2));
}

TEST_F(LibRadosIoPP, RemoveTestPP) {
  char buf[128];
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  ASSERT_EQ(0, ioctx.remove("foo"));
  bufferlist bl2;
  ASSERT_EQ(-ENOENT, ioctx.read("foo", bl2, sizeof(buf), 0));
}

TEST_F(LibRadosIoPP, XattrsRoundTripPP) {
  char buf[128];
  char attr1[] = "attr1";
  char attr1_buf[] = "foo bar baz";
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  bufferlist bl2;
  ASSERT_EQ(-ENODATA, ioctx.getxattr("foo", attr1, bl2));
  bufferlist bl3;
  bl3.append(attr1_buf, sizeof(attr1_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo", attr1, bl3));
  bufferlist bl4;
  ASSERT_EQ((int)sizeof(attr1_buf),
      ioctx.getxattr("foo", attr1, bl4));
  ASSERT_EQ(0, memcmp(bl4.c_str(), attr1_buf, sizeof(attr1_buf)));
}

TEST_F(LibRadosIoPP, RmXattrPP) {
  char buf[128];
  char attr1[] = "attr1";
  char attr1_buf[] = "foo bar baz";
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  bufferlist bl2;
  bl2.append(attr1_buf, sizeof(attr1_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo", attr1, bl2));
  ASSERT_EQ(0, ioctx.rmxattr("foo", attr1));
  bufferlist bl3;
  ASSERT_EQ(-ENODATA, ioctx.getxattr("foo", attr1, bl3));

  // Test rmxattr on a removed object
  char buf2[128];
  char attr2[] = "attr2";
  char attr2_buf[] = "foo bar baz";
  memset(buf2, 0xbb, sizeof(buf2));
  bufferlist bl21;
  bl21.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo_rmxattr", bl21, sizeof(buf2), 0));
  bufferlist bl22;
  bl22.append(attr2_buf, sizeof(attr2_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo_rmxattr", attr2, bl22));
  ASSERT_EQ(0, ioctx.remove("foo_rmxattr"));
  ASSERT_EQ(-ENOENT, ioctx.rmxattr("foo_rmxattr", attr2));
}

TEST_F(LibRadosIoPP, XattrListPP) {
  char buf[128];
  char attr1[] = "attr1";
  char attr1_buf[] = "foo bar baz";
  char attr2[] = "attr2";
  char attr2_buf[256];
  for (size_t j = 0; j < sizeof(attr2_buf); ++j) {
    attr2_buf[j] = j % 0xff;
  }
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  bufferlist bl2;
  bl2.append(attr1_buf, sizeof(attr1_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo", attr1, bl2));
  bufferlist bl3;
  bl3.append(attr2_buf, sizeof(attr2_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo", attr2, bl3));
  std::map<std::string, bufferlist> attrset;
  ASSERT_EQ(0, ioctx.getxattrs("foo", attrset));
  for (std::map<std::string, bufferlist>::iterator i = attrset.begin();
       i != attrset.end(); ++i) {
    if (i->first == string(attr1)) {
      ASSERT_EQ(0, memcmp(i->second.c_str(), attr1_buf, sizeof(attr1_buf)));
    }
    else if (i->first == string(attr2)) {
      ASSERT_EQ(0, memcmp(i->second.c_str(), attr2_buf, sizeof(attr2_buf)));
    }
    else {
      ASSERT_EQ(0, 1);
    }
  }
}

TEST_F(LibRadosIoECPP, SimpleWritePP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));
  ioctx.set_namespace("nspace");
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));
}

TEST_F(LibRadosIoECPP, ReadOpPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));

  {
      bufferlist op_bl;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
  }

  {
    bufferlist op_bl;
    ObjectReadOperation op;
    op.read(0, 0, NULL, NULL); //len=0 mean read the whole object data
    ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
    ASSERT_EQ(sizeof(buf), op_bl.length());
    ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl, op_bl;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), read_bl.length());
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(read_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist op_bl;
      int rval = 1000;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, &rval);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, rval);
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl, op_bl;
      int rval = 1000;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl, &rval);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), read_bl.length());
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, rval);
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(read_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl1, read_bl2, op_bl;
      int rval1 = 1000, rval2 = 1002;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl1, &rval1);
      op.read(0, sizeof(buf), &read_bl2, &rval2);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), read_bl1.length());
      ASSERT_EQ(sizeof(buf), read_bl2.length());
      ASSERT_EQ(sizeof(buf) * 2, op_bl.length());
      ASSERT_EQ(0, rval1);
      ASSERT_EQ(0, rval2);
      ASSERT_EQ(0, memcmp(read_bl1.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(read_bl2.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(op_bl.c_str() + sizeof(buf), buf, sizeof(buf)));
  }

  {
      bufferlist op_bl;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));
      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, NULL));
      ASSERT_EQ(sizeof(buf), read_bl.length());
      ASSERT_EQ(0, memcmp(read_bl.c_str(), buf, sizeof(buf)));
  }

  {
      int rval = 1000;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, &rval);
      ASSERT_EQ(0, ioctx.operate("foo", &op, NULL));
      ASSERT_EQ(0, rval);
  }

  {
      bufferlist read_bl;
      int rval = 1000;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl, &rval);
      ASSERT_EQ(0, ioctx.operate("foo", &op, NULL));
      ASSERT_EQ(sizeof(buf), read_bl.length());
      ASSERT_EQ(0, rval);
      ASSERT_EQ(0, memcmp(read_bl.c_str(), buf, sizeof(buf)));
  }

  {
      bufferlist read_bl1, read_bl2;
      int rval1 = 1000, rval2 = 1002;
      ObjectReadOperation op;
      op.read(0, sizeof(buf), &read_bl1, &rval1);
      op.read(0, sizeof(buf), &read_bl2, &rval2);
      ASSERT_EQ(0, ioctx.operate("foo", &op, NULL));
      ASSERT_EQ(sizeof(buf), read_bl1.length());
      ASSERT_EQ(sizeof(buf), read_bl2.length());
      ASSERT_EQ(0, rval1);
      ASSERT_EQ(0, rval2);
      ASSERT_EQ(0, memcmp(read_bl1.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(0, memcmp(read_bl2.c_str(), buf, sizeof(buf)));
  }

  // read into a preallocated buffer with a cached crc
  {
      bufferlist op_bl;
      op_bl.append(std::string(sizeof(buf), 'x'));
      ASSERT_NE(op_bl.crc32c(0), bl.crc32c(0));  // cache 'x' crc

      ObjectReadOperation op;
      op.read(0, sizeof(buf), NULL, NULL);
      ASSERT_EQ(0, ioctx.operate("foo", &op, &op_bl));

      ASSERT_EQ(sizeof(buf), op_bl.length());
      ASSERT_EQ(0, memcmp(op_bl.c_str(), buf, sizeof(buf)));
      ASSERT_EQ(op_bl.crc32c(0), bl.crc32c(0));
  }
}

TEST_F(LibRadosIoECPP, SparseReadOpPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));

  {
    std::map<uint64_t, uint64_t> extents;
    bufferlist read_bl;
    int rval = -1;
    ObjectReadOperation op;
    op.sparse_read(0, sizeof(buf), &extents, &read_bl, &rval);
    ASSERT_EQ(0, ioctx.operate("foo", &op, nullptr));
    ASSERT_EQ(0, rval);
    assert_eq_sparse(bl, extents, read_bl);
  }
}

TEST_F(LibRadosIoECPP, RoundTripPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  Rados cluster;
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl, sizeof(buf), 0));
  bufferlist cl;
  ASSERT_EQ((int)sizeof(buf), ioctx.read("foo", cl, sizeof(buf) * 3, 0));
  ASSERT_EQ(0, memcmp(buf, cl.c_str(), sizeof(buf)));
}

TEST_F(LibRadosIoECPP, RoundTripPP2)
{
  SKIP_IF_CRIMSON();
  bufferlist bl;
  bl.append("ceph");
  ObjectWriteOperation write;
  write.write(0, bl);
  write.set_op_flags2(LIBRADOS_OP_FLAG_FADVISE_DONTNEED);
  ASSERT_EQ(0, ioctx.operate("foo", &write));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  read.set_op_flags2(LIBRADOS_OP_FLAG_FADVISE_DONTNEED|LIBRADOS_OP_FLAG_FADVISE_RANDOM);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "ceph", 4));
}

TEST_F(LibRadosIoECPP, OverlappingWriteRoundTripPP) {
  SKIP_IF_CRIMSON();
  int bsize = alignment;
  int dbsize = bsize * 2;
  char *buf = (char *)new char[dbsize];
  char *buf2 = (char *)new char[bsize];
  auto cleanup = [&] {
    delete[] buf;
    delete[] buf2;
  };
  scope_guard<decltype(cleanup)> sg(std::move(cleanup));
  memset(buf, 0xcc, dbsize);
  bufferlist bl1;
  bl1.append(buf, dbsize);
  ASSERT_EQ(0, ioctx.write("foo", bl1, dbsize, 0));
  memset(buf2, 0xdd, bsize);
  bufferlist bl2;
  bl2.append(buf2, bsize);
  ASSERT_EQ(-EOPNOTSUPP, ioctx.write("foo", bl2, bsize, 0));
  bufferlist bl3;
  ASSERT_EQ(dbsize, ioctx.read("foo", bl3, dbsize, 0));
  // Read the same as first write
  ASSERT_EQ(0, memcmp(bl3.c_str(), buf, dbsize));
}

TEST_F(LibRadosIoECPP, WriteFullRoundTripPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  char buf2[64];
  memset(buf, 0xcc, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo", bl1, sizeof(buf), 0));
  memset(buf2, 0xdd, sizeof(buf2));
  bufferlist bl2;
  bl2.append(buf2, sizeof(buf2));
  ASSERT_EQ(0, ioctx.write_full("foo", bl2));
  bufferlist bl3;
  ASSERT_EQ((int)sizeof(buf2), ioctx.read("foo", bl3, sizeof(buf), 0));
  ASSERT_EQ(0, memcmp(bl3.c_str(), buf2, sizeof(buf2)));
}

TEST_F(LibRadosIoECPP, WriteFullRoundTripPP2)
{
  SKIP_IF_CRIMSON();
  bufferlist bl;
  bl.append("ceph");
  ObjectWriteOperation write;
  write.write_full(bl);
  write.set_op_flags2(LIBRADOS_OP_FLAG_FADVISE_DONTNEED);
  ASSERT_EQ(0, ioctx.operate("foo", &write));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  read.set_op_flags2(LIBRADOS_OP_FLAG_FADVISE_DONTNEED|LIBRADOS_OP_FLAG_FADVISE_RANDOM);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "ceph", 4));
}

TEST_F(LibRadosIoECPP, AppendRoundTripPP) {
  SKIP_IF_CRIMSON();
  char *buf = (char *)new char[alignment];
  char *buf2 = (char *)new char[alignment];
  auto cleanup = [&] {
    delete[] buf;
    delete[] buf2;
  };
  scope_guard<decltype(cleanup)> sg(std::move(cleanup));
  memset(buf, 0xde, alignment);
  bufferlist bl1;
  bl1.append(buf, alignment);
  ASSERT_EQ(0, ioctx.append("foo", bl1, alignment));
  memset(buf2, 0xad, alignment);
  bufferlist bl2;
  bl2.append(buf2, alignment);
  ASSERT_EQ(0, ioctx.append("foo", bl2, alignment));
  bufferlist bl3;
  ASSERT_EQ((int)(alignment * 2),
	    ioctx.read("foo", bl3, (alignment * 4), 0));
  const char *bl3_str = bl3.c_str();
  ASSERT_EQ(0, memcmp(bl3_str, buf, alignment));
  ASSERT_EQ(0, memcmp(bl3_str + alignment, buf2, alignment));
}

TEST_F(LibRadosIoECPP, TruncTestPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl;
  bl.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl, sizeof(buf)));
  ASSERT_EQ(-EOPNOTSUPP, ioctx.trunc("foo", sizeof(buf) / 2));
  bufferlist bl2;
  // Same size
  ASSERT_EQ((int)sizeof(buf), ioctx.read("foo", bl2, sizeof(buf), 0));
  // No change
  ASSERT_EQ(0, memcmp(bl2.c_str(), buf, sizeof(buf)));
}

TEST_F(LibRadosIoECPP, RemoveTestPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  ASSERT_EQ(0, ioctx.remove("foo"));
  bufferlist bl2;
  ASSERT_EQ(-ENOENT, ioctx.read("foo", bl2, sizeof(buf), 0));
}

TEST_F(LibRadosIoECPP, XattrsRoundTripPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  char attr1[] = "attr1";
  char attr1_buf[] = "foo bar baz";
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  bufferlist bl2;
  ASSERT_EQ(-ENODATA, ioctx.getxattr("foo", attr1, bl2));
  bufferlist bl3;
  bl3.append(attr1_buf, sizeof(attr1_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo", attr1, bl3));
  bufferlist bl4;
  ASSERT_EQ((int)sizeof(attr1_buf),
      ioctx.getxattr("foo", attr1, bl4));
  ASSERT_EQ(0, memcmp(bl4.c_str(), attr1_buf, sizeof(attr1_buf)));
}

TEST_F(LibRadosIoECPP, RmXattrPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  char attr1[] = "attr1";
  char attr1_buf[] = "foo bar baz";
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  bufferlist bl2;
  bl2.append(attr1_buf, sizeof(attr1_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo", attr1, bl2));
  ASSERT_EQ(0, ioctx.rmxattr("foo", attr1));
  bufferlist bl3;
  ASSERT_EQ(-ENODATA, ioctx.getxattr("foo", attr1, bl3));

  // Test rmxattr on a removed object
  char buf2[128];
  char attr2[] = "attr2";
  char attr2_buf[] = "foo bar baz";
  memset(buf2, 0xbb, sizeof(buf2));
  bufferlist bl21;
  bl21.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.write("foo_rmxattr", bl21, sizeof(buf2), 0));
  bufferlist bl22;
  bl22.append(attr2_buf, sizeof(attr2_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo_rmxattr", attr2, bl22));
  ASSERT_EQ(0, ioctx.remove("foo_rmxattr"));
  ASSERT_EQ(-ENOENT, ioctx.rmxattr("foo_rmxattr", attr2));
}

TEST_F(LibRadosIoECPP, XattrListPP) {
  SKIP_IF_CRIMSON();
  char buf[128];
  char attr1[] = "attr1";
  char attr1_buf[] = "foo bar baz";
  char attr2[] = "attr2";
  char attr2_buf[256];
  for (size_t j = 0; j < sizeof(attr2_buf); ++j) {
    attr2_buf[j] = j % 0xff;
  }
  memset(buf, 0xaa, sizeof(buf));
  bufferlist bl1;
  bl1.append(buf, sizeof(buf));
  ASSERT_EQ(0, ioctx.append("foo", bl1, sizeof(buf)));
  bufferlist bl2;
  bl2.append(attr1_buf, sizeof(attr1_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo", attr1, bl2));
  bufferlist bl3;
  bl3.append(attr2_buf, sizeof(attr2_buf));
  ASSERT_EQ(0, ioctx.setxattr("foo", attr2, bl3));
  std::map<std::string, bufferlist> attrset;
  ASSERT_EQ(0, ioctx.getxattrs("foo", attrset));
  for (std::map<std::string, bufferlist>::iterator i = attrset.begin();
       i != attrset.end(); ++i) {
    if (i->first == string(attr1)) {
      ASSERT_EQ(0, memcmp(i->second.c_str(), attr1_buf, sizeof(attr1_buf)));
    }
    else if (i->first == string(attr2)) {
      ASSERT_EQ(0, memcmp(i->second.c_str(), attr2_buf, sizeof(attr2_buf)));
    }
    else {
      ASSERT_EQ(0, 1);
    }
  }
}

TEST_F(LibRadosIoPP, CmpExtPP) {
  bufferlist bl;
  bl.append("ceph");
  ObjectWriteOperation write1;
  write1.write(0, bl);
  ASSERT_EQ(0, ioctx.operate("foo", &write1));

  bufferlist new_bl;
  new_bl.append("CEPH");
  ObjectWriteOperation write2;
  write2.cmpext(0, bl, nullptr);
  write2.write(0, new_bl);
  ASSERT_EQ(0, ioctx.operate("foo", &write2));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "CEPH", 4));
}

TEST_F(LibRadosIoPP, CmpExtDNEPP) {
  bufferlist bl;
  bl.append(std::string(4, '\0'));

  bufferlist new_bl;
  new_bl.append("CEPH");
  ObjectWriteOperation write;
  write.cmpext(0, bl, nullptr);
  write.write(0, new_bl);
  ASSERT_EQ(0, ioctx.operate("foo", &write));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "CEPH", 4));
}

TEST_F(LibRadosIoPP, CmpExtMismatchPP) {
  bufferlist bl;
  bl.append("ceph");
  ObjectWriteOperation write1;
  write1.write(0, bl);
  ASSERT_EQ(0, ioctx.operate("foo", &write1));

  bufferlist new_bl;
  new_bl.append("CEPH");
  ObjectWriteOperation write2;
  write2.cmpext(0, new_bl, nullptr);
  write2.write(0, new_bl);
  ASSERT_EQ(-MAX_ERRNO, ioctx.operate("foo", &write2));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "ceph", 4));
}

TEST_F(LibRadosIoECPP, CmpExtPP) {
  SKIP_IF_CRIMSON();
  bufferlist bl;
  bl.append("ceph");
  ObjectWriteOperation write1;
  write1.write(0, bl);
  ASSERT_EQ(0, ioctx.operate("foo", &write1));

  bufferlist new_bl;
  new_bl.append("CEPH");
  ObjectWriteOperation write2;
  write2.cmpext(0, bl, nullptr);
  write2.write_full(new_bl);
  ASSERT_EQ(0, ioctx.operate("foo", &write2));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "CEPH", 4));
}

TEST_F(LibRadosIoECPP, CmpExtDNEPP) {
  SKIP_IF_CRIMSON();
  bufferlist bl;
  bl.append(std::string(4, '\0'));

  bufferlist new_bl;
  new_bl.append("CEPH");
  ObjectWriteOperation write;
  write.cmpext(0, bl, nullptr);
  write.write_full(new_bl);
  ASSERT_EQ(0, ioctx.operate("foo", &write));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "CEPH", 4));
}

TEST_F(LibRadosIoECPP, CmpExtMismatchPP) {
  SKIP_IF_CRIMSON();
  bufferlist bl;
  bl.append("ceph");
  ObjectWriteOperation write1;
  write1.write(0, bl);
  ASSERT_EQ(0, ioctx.operate("foo", &write1));

  bufferlist new_bl;
  new_bl.append("CEPH");
  ObjectWriteOperation write2;
  write2.cmpext(0, new_bl, nullptr);
  write2.write_full(new_bl);
  ASSERT_EQ(-MAX_ERRNO, ioctx.operate("foo", &write2));

  ObjectReadOperation read;
  read.read(0, bl.length(), NULL, NULL);
  ASSERT_EQ(0, ioctx.operate("foo", &read, &bl));
  ASSERT_EQ(0, memcmp(bl.c_str(), "ceph", 4));
}