int dfs_flush(const char *path, struct fuse_file_info *fi) { TRACE1("flush", path) // retrieve dfs specific data dfs_context *dfs = (dfs_context*)fuse_get_context()->private_data; // check params and the context var assert(path); assert(dfs); assert('/' == *path); assert(fi); if (NULL == (void*)fi->fh) { return 0; } // note that fuse calls flush on RO files too and hdfs does not like that and will return an error if (fi->flags & O_WRONLY) { dfs_fh *fh = (dfs_fh*)fi->fh; assert(fh); hdfsFile file_handle = (hdfsFile)fh->hdfsFH; assert(file_handle); assert(fh->fs); if (hdfsFlush(fh->fs, file_handle) != 0) { ERROR("Could not flush %lx for %s\n",(long)file_handle, path); return -EIO; } } return 0; }
tSize HDFSReadWrite::HDFSWrite(std::string fileName, const char* buffer, tSize len) { fileName = "/" + fileName; int flag = O_WRONLY | O_CREAT; if (hdfsExists(::HdfsConnectionPool::hdfs(), fileName.c_str()) == 0) { flag = O_WRONLY | O_APPEND; } hdfsFile writeFile = hdfsOpenFile(::HdfsConnectionPool::hdfs(), fileName.c_str(), flag, 0, 0, 0); if (writeFile != NULL) { tSize bytesWriten = hdfsWrite(::HdfsConnectionPool::hdfs(), writeFile, buffer, len); ; if (hdfsFlush(::HdfsConnectionPool::hdfs(), writeFile) == -1) { return -1; } hdfsCloseFile(::HdfsConnectionPool::hdfs(), writeFile); return bytesWriten; } else { DEBUG("hdfs open file failed!"); } return -1; }
int main(int argc, char **argv) { hdfsFS fs = hdfsConnect("default", 0); const char* writePath = "/test2/2.txt"; hdfsFile writeFile = hdfsOpenFile(fs, writePath, O_WRONLY |O_CREAT, 0, 0, 0); if(!writeFile) { fprintf(stderr, "Failed to open %s for writing!\n", writePath); return -1; } /* //try open again, ERR msg: No lease on /test2/2.txt hdfsFile writeFile2 = hdfsOpenFile(fs, writePath, O_WRONLY |O_CREAT, 0, 0, 0); if(!writeFile2) { fprintf(stderr, "Failed to open %s for writing!\n", writePath); return -1; } */ const char* buffer = "Hello, World!"; tSize num_written_bytes = hdfsWrite(fs, writeFile, (void*)buffer, strlen(buffer)+1); if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", writePath); return -1; } hdfsCloseFile(fs, writeFile); return 0; }
int HdfsFile::flush() { int ret = hdfsFlush(m_fs, m_file); if( IDBLogger::isEnabled() ) IDBLogger::logNoArg(m_fname, this, "flush", ret); return ret; }
void close(std::ios_base::openmode mode = std::ios_base::openmode() ) { if(file == NULL) return; if(file->type == OUTPUT) { const int flush_error = hdfsFlush(filesystem, file); ASSERT_EQ(flush_error, 0); } const int close_error = hdfsCloseFile(filesystem, file); ASSERT_EQ(close_error, 0); file = NULL; }
int HdfsFile::flush() { int ret = hdfsFlush(m_fs, m_file); int savedErrno = errno; if( ERYDBLogger::isEnabled() ) ERYDBLogger::logNoArg(m_fname, this, "flush", ret); errno = savedErrno; return ret; }
MaprOutputCodedBlockFile::~MaprOutputCodedBlockFile() { //LOG(INFO) << "MaprOutputCodedBlockFile::~MaprOutputCodedBlockFile()"; // force destructors to be called that cause a write to happen before // releasing resources needed for a write output_stream_.reset(NULL); copying_output_stream_.reset(NULL); CHECK_EQ(hdfsFlush(fs_, file_), 0); //LOG(INFO) << "closing file: " << file_; CHECK_EQ(hdfsCloseFile(fs_, file_), 0); //LOG(INFO) << "disconnecting fs: " << fs_; CHECK_EQ(hdfsDisconnect(fs_), 0); }
qioerr hdfs_fsync(void* fl, void* fs) { int got; qioerr err_out = 0; STARTING_SLOW_SYSCALL; got = hdfsFlush(to_hdfs_fs(fs)->hfs, to_hdfs_file(fl)->file); if(got == -1) err_out = qio_mkerror_errno(); DONE_SLOW_SYSCALL; return err_out; }
static PyObject *pyhdfsFS_write(pyhdfsFS *self, PyObject *args) { int i,n; PyObject *data; PyArrayObject *array; char *aptr; if (!PyArg_ParseTuple(args, "O", &data)) { PyErr_SetString(exception, "Invalid data"); return NULL; } array = (PyArrayObject *) PyArray_ContiguousFromObject(data, PyArray_CHAR, 0, 0); if (array == NULL) { PyErr_SetString(exception, "Cannot convert input data to array"); return NULL; } // Compute Size of Array if(array->nd == 0) n = 1; else { n = 1; for(i=0;i<array->nd;i++) n = n * array->dimensions[i]; } aptr = array->data; tSize num_written_bytes = hdfsWrite(self->fs, self->file, (void*)aptr, n); tOffset currentPos = -1; if ((currentPos = hdfsTell(self->fs, self->file)) == -1) { return Py_BuildValue("i",0); } if (hdfsFlush(self->fs, self->file)) { return Py_BuildValue("i",0); } Py_DECREF(array); return Py_BuildValue("i",num_written_bytes); }
int main(int argc, char **argv) { hdfsFS fs = hdfsConnect("default", 0); const char* writePath = "/tmp/testfile.txt"; hdfsFile writeFile = hdfsOpenFile(fs, writePath, O_WRONLY|O_CREAT, 0, 0, 0); if(!writeFile) { fprintf(stderr, "Failed to open %s for writing!\n", writePath); exit(-1); } char* buffer = "Hello, World!"; tSize num_written_bytes = hdfsWrite(fs, writeFile, (void*)buffer, strlen(buffer)+1); if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", writePath); exit(-1); } hdfsCloseFile(fs, writeFile); }
int main(int argc, char **argv) { hdfsFS fs = hdfsConnect("default", 0); if(!fs) { fprintf(stderr, "Oops! Failed to connect to hdfs!\n"); exit(-1); } hdfsFS lfs = hdfsConnect(NULL, 0); if(!lfs) { fprintf(stderr, "Oops! Failed to connect to 'local' hdfs!\n"); exit(-1); } const char* writePath = "/tmp/testfile.txt"; { //Write tests hdfsFile writeFile = hdfsOpenFile(fs, writePath, O_WRONLY|O_CREAT, 0, 0, 0); if(!writeFile) { fprintf(stderr, "Failed to open %s for writing!\n", writePath); exit(-1); } fprintf(stderr, "Opened %s for writing successfully...\n", writePath); char* buffer = "Hello, World!"; tSize num_written_bytes = hdfsWrite(fs, writeFile, (void*)buffer, strlen(buffer)+1); fprintf(stderr, "Wrote %d bytes\n", num_written_bytes); tOffset currentPos = -1; if ((currentPos = hdfsTell(fs, writeFile)) == -1) { fprintf(stderr, "Failed to get current file position correctly! Got %ld!\n", currentPos); exit(-1); } fprintf(stderr, "Current position: %ld\n", currentPos); if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", writePath); exit(-1); } fprintf(stderr, "Flushed %s successfully!\n", writePath); hdfsCloseFile(fs, writeFile); } { //Read tests const char* readPath = "/tmp/testfile.txt"; int exists = hdfsExists(fs, readPath); if (exists) { fprintf(stderr, "Failed to validate existence of %s\n", readPath); exit(-1); } hdfsFile readFile = hdfsOpenFile(fs, readPath, O_RDONLY, 0, 0, 0); if (!readFile) { fprintf(stderr, "Failed to open %s for reading!\n", readPath); exit(-1); } fprintf(stderr, "hdfsAvailable: %d\n", hdfsAvailable(fs, readFile)); tOffset seekPos = 1; if(hdfsSeek(fs, readFile, seekPos)) { fprintf(stderr, "Failed to seek %s for reading!\n", readPath); exit(-1); } tOffset currentPos = -1; if((currentPos = hdfsTell(fs, readFile)) != seekPos) { fprintf(stderr, "Failed to get current file position correctly! Got %ld!\n", currentPos); exit(-1); } fprintf(stderr, "Current position: %ld\n", currentPos); static char buffer[32]; tSize num_read_bytes = hdfsRead(fs, readFile, (void*)buffer, sizeof(buffer)); fprintf(stderr, "Read following %d bytes:\n%s\n", num_read_bytes, buffer); num_read_bytes = hdfsPread(fs, readFile, 0, (void*)buffer, sizeof(buffer)); fprintf(stderr, "Read following %d bytes:\n%s\n", num_read_bytes, buffer); hdfsCloseFile(fs, readFile); } int totalResult = 0; int result = 0; { //Generic file-system operations const char* srcPath = "/tmp/testfile.txt"; const char* dstPath = "/tmp/testfile2.txt"; fprintf(stderr, "hdfsCopy(remote-local): %s\n", ((result = hdfsCopy(fs, srcPath, lfs, srcPath)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsCopy(remote-remote): %s\n", ((result = hdfsCopy(fs, srcPath, fs, dstPath)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsMove(local-local): %s\n", ((result = hdfsMove(lfs, srcPath, lfs, dstPath)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsMove(remote-local): %s\n", ((result = hdfsMove(fs, srcPath, lfs, srcPath)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsRename: %s\n", ((result = hdfsRename(fs, dstPath, srcPath)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsCopy(remote-remote): %s\n", ((result = hdfsCopy(fs, srcPath, fs, dstPath)) ? "Failed!" : "Success!")); totalResult += result; const char* slashTmp = "/tmp"; const char* newDirectory = "/tmp/newdir"; fprintf(stderr, "hdfsCreateDirectory: %s\n", ((result = hdfsCreateDirectory(fs, newDirectory)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsSetReplication: %s\n", ((result = hdfsSetReplication(fs, srcPath, 2)) ? "Failed!" : "Success!")); totalResult += result; char buffer[256]; const char *resp; fprintf(stderr, "hdfsGetWorkingDirectory: %s\n", ((resp = hdfsGetWorkingDirectory(fs, buffer, sizeof(buffer))) ? buffer : "Failed!")); totalResult += (resp ? 0 : 1); fprintf(stderr, "hdfsSetWorkingDirectory: %s\n", ((result = hdfsSetWorkingDirectory(fs, slashTmp)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsGetWorkingDirectory: %s\n", ((resp = hdfsGetWorkingDirectory(fs, buffer, sizeof(buffer))) ? buffer : "Failed!")); totalResult += (resp ? 0 : 1); fprintf(stderr, "hdfsGetDefaultBlockSize: %ld\n", hdfsGetDefaultBlockSize(fs)); fprintf(stderr, "hdfsGetCapacity: %ld\n", hdfsGetCapacity(fs)); fprintf(stderr, "hdfsGetUsed: %ld\n", hdfsGetUsed(fs)); hdfsFileInfo *fileInfo = NULL; if((fileInfo = hdfsGetPathInfo(fs, slashTmp)) != NULL) { fprintf(stderr, "hdfsGetPathInfo - SUCCESS!\n"); fprintf(stderr, "Name: %s, ", fileInfo->mName); fprintf(stderr, "Type: %c, ", (char)(fileInfo->mKind)); fprintf(stderr, "Replication: %d, ", fileInfo->mReplication); fprintf(stderr, "BlockSize: %ld, ", fileInfo->mBlockSize); fprintf(stderr, "Size: %ld, ", fileInfo->mSize); fprintf(stderr, "LastMod: %s", ctime(&fileInfo->mLastMod)); fprintf(stderr, "Owner: %s, ", fileInfo->mOwner); fprintf(stderr, "Group: %s, ", fileInfo->mGroup); char permissions[10]; permission_disp(fileInfo->mPermissions, permissions); fprintf(stderr, "Permissions: %d (%s)\n", fileInfo->mPermissions, permissions); hdfsFreeFileInfo(fileInfo, 1); } else { totalResult++; fprintf(stderr, "waah! hdfsGetPathInfo for %s - FAILED!\n", slashTmp); } hdfsFileInfo *fileList = 0; int numEntries = 0; if((fileList = hdfsListDirectory(fs, slashTmp, &numEntries)) != NULL) { int i = 0; for(i=0; i < numEntries; ++i) { fprintf(stderr, "Name: %s, ", fileList[i].mName); fprintf(stderr, "Type: %c, ", (char)fileList[i].mKind); fprintf(stderr, "Replication: %d, ", fileList[i].mReplication); fprintf(stderr, "BlockSize: %ld, ", fileList[i].mBlockSize); fprintf(stderr, "Size: %ld, ", fileList[i].mSize); fprintf(stderr, "LastMod: %s", ctime(&fileList[i].mLastMod)); fprintf(stderr, "Owner: %s, ", fileList[i].mOwner); fprintf(stderr, "Group: %s, ", fileList[i].mGroup); char permissions[10]; permission_disp(fileList[i].mPermissions, permissions); fprintf(stderr, "Permissions: %d (%s)\n", fileList[i].mPermissions, permissions); } hdfsFreeFileInfo(fileList, numEntries); } else { if (errno) { totalResult++; fprintf(stderr, "waah! hdfsListDirectory - FAILED!\n"); } else { fprintf(stderr, "Empty directory!\n"); } } char*** hosts = hdfsGetHosts(fs, srcPath, 0, 1); if(hosts) { fprintf(stderr, "hdfsGetHosts - SUCCESS! ... \n"); int i=0; while(hosts[i]) { int j = 0; while(hosts[i][j]) { fprintf(stderr, "\thosts[%d][%d] - %s\n", i, j, hosts[i][j]); ++j; } ++i; } } else { totalResult++; fprintf(stderr, "waah! hdfsGetHosts - FAILED!\n"); } char *newOwner = "root"; // setting tmp dir to 777 so later when connectAsUser nobody, we can write to it short newPerm = 0666; // chown write fprintf(stderr, "hdfsChown: %s\n", ((result = hdfsChown(fs, writePath, NULL, "users")) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsChown: %s\n", ((result = hdfsChown(fs, writePath, newOwner, NULL)) ? "Failed!" : "Success!")); totalResult += result; // chmod write fprintf(stderr, "hdfsChmod: %s\n", ((result = hdfsChmod(fs, writePath, newPerm)) ? "Failed!" : "Success!")); totalResult += result; sleep(2); tTime newMtime = time(NULL); tTime newAtime = time(NULL); // utime write fprintf(stderr, "hdfsUtime: %s\n", ((result = hdfsUtime(fs, writePath, newMtime, newAtime)) ? "Failed!" : "Success!")); totalResult += result; // chown/chmod/utime read hdfsFileInfo *finfo = hdfsGetPathInfo(fs, writePath); fprintf(stderr, "hdfsChown read: %s\n", ((result = (strcmp(finfo->mOwner, newOwner) != 0)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsChmod read: %s\n", ((result = (finfo->mPermissions != newPerm)) ? "Failed!" : "Success!")); totalResult += result; // will later use /tmp/ as a different user so enable it fprintf(stderr, "hdfsChmod: %s\n", ((result = hdfsChmod(fs, "/tmp/", 0777)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr,"newMTime=%ld\n",newMtime); fprintf(stderr,"curMTime=%ld\n",finfo->mLastMod); fprintf(stderr, "hdfsUtime read (mtime): %s\n", ((result = (finfo->mLastMod != newMtime)) ? "Failed!" : "Success!")); totalResult += result; // No easy way to turn on access times from hdfs_test right now // fprintf(stderr, "hdfsUtime read (atime): %s\n", ((result = (finfo->mLastAccess != newAtime)) ? "Failed!" : "Success!")); // totalResult += result; hdfsFreeFileInfo(finfo, 1); // Clean up fprintf(stderr, "hdfsDelete: %s\n", ((result = hdfsDelete(fs, newDirectory)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsDelete: %s\n", ((result = hdfsDelete(fs, srcPath)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsDelete: %s\n", ((result = hdfsDelete(lfs, srcPath)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsDelete: %s\n", ((result = hdfsDelete(lfs, dstPath)) ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsExists: %s\n", ((result = hdfsExists(fs, newDirectory)) ? "Success!" : "Failed!")); totalResult += (result ? 0 : 1); } totalResult += (hdfsDisconnect(fs) != 0); { // // Now test as connecting as a specific user // This is only meant to test that we connected as that user, not to test // the actual fs user capabilities. Thus just create a file and read // the owner is correct. const char *tuser = "******"; const char* writePath = "/tmp/usertestfile.txt"; const char **groups = (const char**)malloc(sizeof(char*)* 2); groups[0] = "users"; groups[1] = "nobody"; fs = hdfsConnectAsUser("default", 0, tuser, groups, 2); if(!fs) { fprintf(stderr, "Oops! Failed to connect to hdfs as user %s!\n",tuser); exit(-1); } hdfsFile writeFile = hdfsOpenFile(fs, writePath, O_WRONLY|O_CREAT, 0, 0, 0); if(!writeFile) { fprintf(stderr, "Failed to open %s for writing!\n", writePath); exit(-1); } fprintf(stderr, "Opened %s for writing successfully...\n", writePath); char* buffer = "Hello, World!"; tSize num_written_bytes = hdfsWrite(fs, writeFile, (void*)buffer, strlen(buffer)+1); fprintf(stderr, "Wrote %d bytes\n", num_written_bytes); if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", writePath); exit(-1); } fprintf(stderr, "Flushed %s successfully!\n", writePath); hdfsCloseFile(fs, writeFile); hdfsFileInfo *finfo = hdfsGetPathInfo(fs, writePath); fprintf(stderr, "hdfs new file user is correct: %s\n", ((result = (strcmp(finfo->mOwner, tuser) != 0)) ? "Failed!" : "Success!")); totalResult += result; } totalResult += (hdfsDisconnect(fs) != 0); if (totalResult != 0) { return -1; } else { return 0; } }
int libhdfsconnector::mergeFile() { if (nodeID == 0) { if (!fs) { fprintf(stderr, "Could not connect to hdfs on"); return RETURN_FAILURE; } fprintf(stderr, "merging %d file(s) into %s\n", clusterCount, fileName); fprintf(stderr, "Opening %s for writing!\n", fileName); hdfsFile writeFile = hdfsOpenFile(fs, fileName, O_CREAT | O_WRONLY, 0, filereplication, 0); if (!writeFile) { fprintf(stderr, "Failed to open %s for writing!\n", fileName); return EXIT_FAILURE; } tSize totalBytesWritten = 0; for (unsigned node = 0; node < clusterCount; node++) { if (node > 0) { writeFile = hdfsOpenFile(fs, fileName, O_WRONLY | O_APPEND, 0, filereplication, 0); fprintf(stderr, "Re-opening %s for append!\n", fileName); } unsigned bytesWrittenSinceLastFlush = 0; string filepartname; createFilePartName(&filepartname, fileName, node, clusterCount); if (hdfsExists(fs, filepartname.c_str()) == 0) { fprintf(stderr, "Opening readfile %s\n", filepartname.c_str()); hdfsFile readFile = hdfsOpenFile(fs, filepartname.c_str(), O_RDONLY, 0, 0, 0); if (!readFile) { fprintf(stderr, "Failed to open %s for reading!\n", fileName); return EXIT_FAILURE; } unsigned char buffer[bufferSize + 1]; while (hdfsAvailable(fs, readFile)) { tSize num_read_bytes = hdfsRead(fs, readFile, buffer, bufferSize); if (num_read_bytes <= 0) break; tSize bytesWritten = 0; try { bytesWritten = hdfsWrite(fs, writeFile, (void*) buffer, num_read_bytes); totalBytesWritten += bytesWritten; bytesWrittenSinceLastFlush += bytesWritten; if (bytesWrittenSinceLastFlush >= flushThreshold) { if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", fileName); return EXIT_FAILURE; } bytesWrittenSinceLastFlush = 0; } } catch (...) { fprintf(stderr, "Issue detected during HDFSWrite\n"); fprintf(stderr, "Bytes written in current iteration: %d\n", bytesWritten); return EXIT_FAILURE; } } if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", fileName); return EXIT_FAILURE; } fprintf(stderr, "Closing readfile %s\n", filepartname.c_str()); hdfsCloseFile(fs, readFile); if (cleanmerge) { #ifdef HADOOP_GT_21 hdfsDelete(fs, filepartname.c_str(), 0); #else hdfsDelete(fs, filepartname.c_str()); #endif } } else { fprintf(stderr, "Could not merge, part %s was not located\n", filepartname.c_str()); return EXIT_FAILURE; } fprintf(stderr, "Closing writefile %s\n", fileName); if (hdfsCloseFile(fs, writeFile) != 0) fprintf(stderr, "Could not close writefile %s\n", fileName); } if (cleanmerge) { string filecontainer; filecontainer.assign(fileName); filecontainer.append("-parts"); #ifdef HADOOP_GT_21 hdfsDelete(fs, filecontainer.c_str(), 0); #else hdfsDelete(fs, filecontainer.c_str()); #endif } } return EXIT_SUCCESS; }
static int doTestHdfsOperations(struct tlhThreadInfo *ti, hdfsFS fs, const struct tlhPaths *paths) { char tmp[4096]; hdfsFile file; int ret, expected, numEntries; hdfsFileInfo *fileInfo; struct hdfsReadStatistics *readStats = NULL; if (hdfsExists(fs, paths->prefix) == 0) { EXPECT_ZERO(hdfsDelete(fs, paths->prefix, 1)); } EXPECT_ZERO(hdfsCreateDirectory(fs, paths->prefix)); EXPECT_ZERO(doTestGetDefaultBlockSize(fs, paths->prefix)); /* There should be no entry in the directory. */ errno = EACCES; // see if errno is set to 0 on success EXPECT_NULL_WITH_ERRNO(hdfsListDirectory(fs, paths->prefix, &numEntries), 0); if (numEntries != 0) { fprintf(stderr, "hdfsListDirectory set numEntries to " "%d on empty directory.", numEntries); } /* There should not be any file to open for reading. */ EXPECT_NULL(hdfsOpenFile(fs, paths->file1, O_RDONLY, 0, 0, 0)); /* hdfsOpenFile should not accept mode = 3 */ EXPECT_NULL(hdfsOpenFile(fs, paths->file1, 3, 0, 0, 0)); file = hdfsOpenFile(fs, paths->file1, O_WRONLY, 0, 0, 0); EXPECT_NONNULL(file); /* TODO: implement writeFully and use it here */ expected = (int)strlen(paths->prefix); ret = hdfsWrite(fs, file, paths->prefix, expected); if (ret < 0) { ret = errno; fprintf(stderr, "hdfsWrite failed and set errno %d\n", ret); return ret; } if (ret != expected) { fprintf(stderr, "hdfsWrite was supposed to write %d bytes, but " "it wrote %d\n", ret, expected); return EIO; } EXPECT_ZERO(hdfsFlush(fs, file)); EXPECT_ZERO(hdfsHSync(fs, file)); EXPECT_ZERO(hdfsCloseFile(fs, file)); /* There should be 1 entry in the directory. */ EXPECT_NONNULL(hdfsListDirectory(fs, paths->prefix, &numEntries)); if (numEntries != 1) { fprintf(stderr, "hdfsListDirectory set numEntries to " "%d on directory containing 1 file.", numEntries); } /* Let's re-open the file for reading */ file = hdfsOpenFile(fs, paths->file1, O_RDONLY, 0, 0, 0); EXPECT_NONNULL(file); EXPECT_ZERO(hdfsFileGetReadStatistics(file, &readStats)); errno = 0; EXPECT_UINT64_EQ(UINT64_C(0), readStats->totalBytesRead); EXPECT_UINT64_EQ(UINT64_C(0), readStats->totalLocalBytesRead); EXPECT_UINT64_EQ(UINT64_C(0), readStats->totalShortCircuitBytesRead); hdfsFileFreeReadStatistics(readStats); /* TODO: implement readFully and use it here */ ret = hdfsRead(fs, file, tmp, sizeof(tmp)); if (ret < 0) { ret = errno; fprintf(stderr, "hdfsRead failed and set errno %d\n", ret); return ret; } if (ret != expected) { fprintf(stderr, "hdfsRead was supposed to read %d bytes, but " "it read %d\n", ret, expected); return EIO; } EXPECT_ZERO(hdfsFileGetReadStatistics(file, &readStats)); errno = 0; EXPECT_UINT64_EQ((uint64_t)expected, readStats->totalBytesRead); hdfsFileFreeReadStatistics(readStats); EXPECT_ZERO(hdfsFileClearReadStatistics(file)); EXPECT_ZERO(hdfsFileGetReadStatistics(file, &readStats)); EXPECT_UINT64_EQ((uint64_t)0, readStats->totalBytesRead); hdfsFileFreeReadStatistics(readStats); EXPECT_ZERO(memcmp(paths->prefix, tmp, expected)); EXPECT_ZERO(hdfsCloseFile(fs, file)); // TODO: Non-recursive delete should fail? //EXPECT_NONZERO(hdfsDelete(fs, prefix, 0)); EXPECT_ZERO(hdfsCopy(fs, paths->file1, fs, paths->file2)); EXPECT_ZERO(hdfsChown(fs, paths->file2, NULL, NULL)); EXPECT_ZERO(hdfsChown(fs, paths->file2, NULL, "doop")); fileInfo = hdfsGetPathInfo(fs, paths->file2); EXPECT_NONNULL(fileInfo); EXPECT_ZERO(strcmp("doop", fileInfo->mGroup)); EXPECT_ZERO(hdfsFileIsEncrypted(fileInfo)); hdfsFreeFileInfo(fileInfo, 1); EXPECT_ZERO(hdfsChown(fs, paths->file2, "ha", "doop2")); fileInfo = hdfsGetPathInfo(fs, paths->file2); EXPECT_NONNULL(fileInfo); EXPECT_ZERO(strcmp("ha", fileInfo->mOwner)); EXPECT_ZERO(strcmp("doop2", fileInfo->mGroup)); hdfsFreeFileInfo(fileInfo, 1); EXPECT_ZERO(hdfsChown(fs, paths->file2, "ha2", NULL)); fileInfo = hdfsGetPathInfo(fs, paths->file2); EXPECT_NONNULL(fileInfo); EXPECT_ZERO(strcmp("ha2", fileInfo->mOwner)); EXPECT_ZERO(strcmp("doop2", fileInfo->mGroup)); hdfsFreeFileInfo(fileInfo, 1); snprintf(tmp, sizeof(tmp), "%s/nonexistent-file-name", paths->prefix); EXPECT_NEGATIVE_ONE_WITH_ERRNO(hdfsChown(fs, tmp, "ha3", NULL), ENOENT); return 0; }
int uploadFile(const char *path){ hdfsFS fs = hdfsConnect("default", 0); hdfsFile fd_w; int fd; unsigned long size, i; struct stat fd_s; char *buf_r; const char *filename; /* Get the file size */ if ((fd = open(path, O_RDONLY)) < 0){ perror("Open file failed"); exit(1); } if (fstat(fd, &fd_s) < 0){ perror("Get file stat failed"); exit(1); } size = fd_s.st_size; /* Open the file at hdfs */ filename = strrchr(path, '/'); if (!filename){ filename = path; }else{ filename += 1; } fd_w = hdfsOpenFile(fs, filename, O_WRONLY|O_CREAT, 0, 0, 0); if (!fd_w){ perror("Failed to create file to upload"); exit(1); } /* Write the file */ for (i = 0; i + UPLOAD_BLOCK < size; i += UPLOAD_BLOCK){ buf_r = (char *)mmap(NULL,\ UPLOAD_BLOCK,\ PROT_READ,\ MAP_SHARED,\ fd, i); if (buf_r == MAP_FAILED){ perror("Failed to map memory"); exit(1); } hdfsWrite(fs, fd_w, (void*)buf_r, UPLOAD_BLOCK); if (hdfsFlush(fs, fd_w)){ perror("Failed to flush"); exit(1); } if ((munmap(buf_r, UPLOAD_BLOCK)) < 0){ perror("memory unmap error"); exit(1); } } if (size){ /* To avoid size == 0 */ buf_r = (char *)mmap(NULL,\ size - i,\ PROT_READ,\ MAP_SHARED,\ fd, i); if (buf_r == MAP_FAILED){ perror("Failed to map memory"); exit(1); } hdfsWrite(fs, fd_w, (void*)buf_r, size - i); if (hdfsFlush(fs, fd_w)){ perror("Failed to flush"); exit(1); } if ((munmap(buf_r, size - i)) < 0){ perror("memory unmap error"); exit(1); } } /* Upload end */ close(fd); hdfsCloseFile(fs, fd_w); hdfsDisconnect(fs); return 0; }
int libhdfsconnector::writeFlatOffset() { if (!fs) { fprintf(stderr, "Could not connect to hdfs on"); return RETURN_FAILURE; } string filepartname; createFilePartName(&filepartname, fileName, nodeID, clusterCount); hdfsFile writeFile = hdfsOpenFile(fs, filepartname.c_str(), O_CREAT | O_WRONLY, 0, 1, 0); if (!writeFile) { fprintf(stderr, "Failed to open %s for writing!\n", filepartname.c_str()); return RETURN_FAILURE; } fprintf(stderr, "Opened HDFS file %s for writing successfully...\n", filepartname.c_str()); fprintf(stderr, "Opening pipe: %s \n", pipepath); ifstream in; in.open(pipepath, ios::in | ios::binary); char char_ptr[124 * 100]; //TODO: this should be configurable. // should it be bigger/smaller? // should it match the HDFS file block size? size_t bytesread = 0; size_t totalbytesread = 0; size_t totalbyteswritten = 0; fprintf(stderr, "Writing %s to HDFS.", filepartname.c_str()); while (!in.eof()) { memset(&char_ptr[0], 0, sizeof(char_ptr)); in.read(char_ptr, sizeof(char_ptr)); bytesread = in.gcount(); totalbytesread += bytesread; tSize num_written_bytes = hdfsWrite(fs, writeFile, (void*) char_ptr, bytesread); totalbyteswritten += num_written_bytes; //Need to figure out how often this should be done //if(totalbyteswritten % ) { if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", filepartname.c_str()); return EXIT_FAILURE; } } } in.close(); if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", filepartname.c_str()); return EXIT_FAILURE; } fprintf(stderr, "\n total read: %lu, total written: %lu\n", totalbytesread, totalbyteswritten); int clos = hdfsCloseFile(fs, writeFile); fprintf(stderr, "hdfsCloseFile result: %d", clos); return EXIT_SUCCESS; }
int main(int argc, char **argv) { const char *writePath = "/tmp/testfile.txt"; const char *fileContents = "Hello, World!"; const char *readPath = "/tmp/testfile.txt"; const char *srcPath = "/tmp/testfile.txt"; const char *dstPath = "/tmp/testfile2.txt"; const char *slashTmp = "/tmp"; const char *newDirectory = "/tmp/newdir"; const char *newOwner = "root"; const char *tuser = "******"; const char *appendPath = "/tmp/appends"; const char *userPath = "/tmp/usertestfile.txt"; char buffer[32], buffer2[256], rdbuffer[32]; tSize num_written_bytes, num_read_bytes; hdfsFS fs, lfs; hdfsFile writeFile, readFile, localFile, appendFile, userFile; tOffset currentPos, seekPos; int exists, totalResult, result, numEntries, i, j; const char *resp; hdfsFileInfo *fileInfo, *fileList, *finfo; char *buffer3; char permissions[10]; char ***hosts; short newPerm = 0666; tTime newMtime, newAtime; fs = hdfsConnectNewInstance("default", 0); if(!fs) { fprintf(stderr, "Oops! Failed to connect to hdfs!\n"); exit(-1); } lfs = hdfsConnectNewInstance(NULL, 0); if(!lfs) { fprintf(stderr, "Oops! Failed to connect to 'local' hdfs!\n"); exit(-1); } { //Write tests writeFile = hdfsOpenFile(fs, writePath, O_WRONLY|O_CREAT, 0, 0, 0); if(!writeFile) { fprintf(stderr, "Failed to open %s for writing!\n", writePath); exit(-1); } fprintf(stderr, "Opened %s for writing successfully...\n", writePath); num_written_bytes = hdfsWrite(fs, writeFile, (void*)fileContents, (tSize)(strlen(fileContents)+1)); if (num_written_bytes != strlen(fileContents) + 1) { fprintf(stderr, "Failed to write correct number of bytes - expected %d, got %d\n", (int)(strlen(fileContents) + 1), (int)num_written_bytes); exit(-1); } fprintf(stderr, "Wrote %d bytes\n", num_written_bytes); currentPos = -1; if ((currentPos = hdfsTell(fs, writeFile)) == -1) { fprintf(stderr, "Failed to get current file position correctly! Got %" PRId64 "!\n", currentPos); exit(-1); } fprintf(stderr, "Current position: %" PRId64 "\n", currentPos); if (hdfsFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'flush' %s\n", writePath); exit(-1); } fprintf(stderr, "Flushed %s successfully!\n", writePath); if (hdfsHFlush(fs, writeFile)) { fprintf(stderr, "Failed to 'hflush' %s\n", writePath); exit(-1); } fprintf(stderr, "HFlushed %s successfully!\n", writePath); hdfsCloseFile(fs, writeFile); } { //Read tests exists = hdfsExists(fs, readPath); if (exists) { fprintf(stderr, "Failed to validate existence of %s\n", readPath); exit(-1); } readFile = hdfsOpenFile(fs, readPath, O_RDONLY, 0, 0, 0); if (!readFile) { fprintf(stderr, "Failed to open %s for reading!\n", readPath); exit(-1); } if (!hdfsFileIsOpenForRead(readFile)) { fprintf(stderr, "hdfsFileIsOpenForRead: we just opened a file " "with O_RDONLY, and it did not show up as 'open for " "read'\n"); exit(-1); } fprintf(stderr, "hdfsAvailable: %d\n", hdfsAvailable(fs, readFile)); seekPos = 1; if(hdfsSeek(fs, readFile, seekPos)) { fprintf(stderr, "Failed to seek %s for reading!\n", readPath); exit(-1); } currentPos = -1; if((currentPos = hdfsTell(fs, readFile)) != seekPos) { fprintf(stderr, "Failed to get current file position correctly! Got %" PRId64 "!\n", currentPos); exit(-1); } fprintf(stderr, "Current position: %" PRId64 "\n", currentPos); if (!hdfsFileUsesDirectRead(readFile)) { fprintf(stderr, "Direct read support incorrectly not detected " "for HDFS filesystem\n"); exit(-1); } fprintf(stderr, "Direct read support detected for HDFS\n"); // Test the direct read path if(hdfsSeek(fs, readFile, 0)) { fprintf(stderr, "Failed to seek %s for reading!\n", readPath); exit(-1); } memset(buffer, 0, sizeof(buffer)); num_read_bytes = hdfsRead(fs, readFile, (void*)buffer, sizeof(buffer)); if (strncmp(fileContents, buffer, strlen(fileContents)) != 0) { fprintf(stderr, "Failed to read (direct). Expected %s but got %s (%d bytes)\n", fileContents, buffer, num_read_bytes); exit(-1); } fprintf(stderr, "Read (direct) following %d bytes:\n%s\n", num_read_bytes, buffer); if (hdfsSeek(fs, readFile, 0L)) { fprintf(stderr, "Failed to seek to file start!\n"); exit(-1); } // Disable the direct read path so that we really go through the slow // read path hdfsFileDisableDirectRead(readFile); num_read_bytes = hdfsRead(fs, readFile, (void*)buffer, sizeof(buffer)); fprintf(stderr, "Read following %d bytes:\n%s\n", num_read_bytes, buffer); memset(buffer, 0, strlen(fileContents + 1)); num_read_bytes = hdfsPread(fs, readFile, 0, (void*)buffer, sizeof(buffer)); fprintf(stderr, "Read following %d bytes:\n%s\n", num_read_bytes, buffer); hdfsCloseFile(fs, readFile); // Test correct behaviour for unsupported filesystems localFile = hdfsOpenFile(lfs, writePath, O_WRONLY|O_CREAT, 0, 0, 0); if(!localFile) { fprintf(stderr, "Failed to open %s for writing!\n", writePath); exit(-1); } num_written_bytes = hdfsWrite(lfs, localFile, (void*)fileContents, (tSize)(strlen(fileContents) + 1)); hdfsCloseFile(lfs, localFile); localFile = hdfsOpenFile(lfs, writePath, O_RDONLY, 0, 0, 0); if (hdfsFileUsesDirectRead(localFile)) { fprintf(stderr, "Direct read support incorrectly detected for local " "filesystem\n"); exit(-1); } hdfsCloseFile(lfs, localFile); } totalResult = 0; result = 0; { //Generic file-system operations fprintf(stderr, "hdfsCopy(remote-local): %s\n", ((result = hdfsCopy(fs, srcPath, lfs, srcPath)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsCopy(remote-remote): %s\n", ((result = hdfsCopy(fs, srcPath, fs, dstPath)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsMove(local-local): %s\n", ((result = hdfsMove(lfs, srcPath, lfs, dstPath)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsMove(remote-local): %s\n", ((result = hdfsMove(fs, srcPath, lfs, srcPath)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsRename: %s\n", ((result = hdfsRename(fs, dstPath, srcPath)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsCopy(remote-remote): %s\n", ((result = hdfsCopy(fs, srcPath, fs, dstPath)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsCreateDirectory: %s\n", ((result = hdfsCreateDirectory(fs, newDirectory)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsSetReplication: %s\n", ((result = hdfsSetReplication(fs, srcPath, 2)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsGetWorkingDirectory: %s\n", ((resp = hdfsGetWorkingDirectory(fs, buffer2, sizeof(buffer2))) != 0 ? buffer2 : "Failed!")); totalResult += (resp ? 0 : 1); fprintf(stderr, "hdfsSetWorkingDirectory: %s\n", ((result = hdfsSetWorkingDirectory(fs, slashTmp)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsGetWorkingDirectory: %s\n", ((resp = hdfsGetWorkingDirectory(fs, buffer2, sizeof(buffer2))) != 0 ? buffer2 : "Failed!")); totalResult += (resp ? 0 : 1); fprintf(stderr, "hdfsGetDefaultBlockSize: %" PRId64 "\n", hdfsGetDefaultBlockSize(fs)); fprintf(stderr, "hdfsGetCapacity: %" PRId64 "\n", hdfsGetCapacity(fs)); fprintf(stderr, "hdfsGetUsed: %" PRId64 "\n", hdfsGetUsed(fs)); fileInfo = NULL; if((fileInfo = hdfsGetPathInfo(fs, slashTmp)) != NULL) { fprintf(stderr, "hdfsGetPathInfo - SUCCESS!\n"); fprintf(stderr, "Name: %s, ", fileInfo->mName); fprintf(stderr, "Type: %c, ", (char)(fileInfo->mKind)); fprintf(stderr, "Replication: %d, ", fileInfo->mReplication); fprintf(stderr, "BlockSize: %" PRId64 ", ", fileInfo->mBlockSize); fprintf(stderr, "Size: %" PRId64 ", ", fileInfo->mSize); fprintf(stderr, "LastMod: %s", ctime(&fileInfo->mLastMod)); fprintf(stderr, "Owner: %s, ", fileInfo->mOwner); fprintf(stderr, "Group: %s, ", fileInfo->mGroup); permission_disp(fileInfo->mPermissions, permissions); fprintf(stderr, "Permissions: %d (%s)\n", fileInfo->mPermissions, permissions); hdfsFreeFileInfo(fileInfo, 1); } else { totalResult++; fprintf(stderr, "waah! hdfsGetPathInfo for %s - FAILED!\n", slashTmp); } fileList = 0; fileList = hdfsListDirectory(fs, newDirectory, &numEntries); if (!(fileList == NULL && numEntries == 0 && !errno)) { fprintf(stderr, "waah! hdfsListDirectory for empty %s - FAILED!\n", newDirectory); totalResult++; } else { fprintf(stderr, "hdfsListDirectory for empty %s - SUCCESS!\n", newDirectory); } fileList = 0; if((fileList = hdfsListDirectory(fs, slashTmp, &numEntries)) != NULL) { for(i=0; i < numEntries; ++i) { fprintf(stderr, "Name: %s, ", fileList[i].mName); fprintf(stderr, "Type: %c, ", (char)fileList[i].mKind); fprintf(stderr, "Replication: %d, ", fileList[i].mReplication); fprintf(stderr, "BlockSize: %" PRId64 ", ", fileList[i].mBlockSize); fprintf(stderr, "Size: %" PRId64 ", ", fileList[i].mSize); fprintf(stderr, "LastMod: %s", ctime(&fileList[i].mLastMod)); fprintf(stderr, "Owner: %s, ", fileList[i].mOwner); fprintf(stderr, "Group: %s, ", fileList[i].mGroup); permission_disp(fileList[i].mPermissions, permissions); fprintf(stderr, "Permissions: %d (%s)\n", fileList[i].mPermissions, permissions); } hdfsFreeFileInfo(fileList, numEntries); } else { if (errno) { totalResult++; fprintf(stderr, "waah! hdfsListDirectory - FAILED!\n"); } else { fprintf(stderr, "Empty directory!\n"); } } hosts = hdfsGetHosts(fs, srcPath, 0, 1); if(hosts) { fprintf(stderr, "hdfsGetHosts - SUCCESS! ... \n"); i=0; while(hosts[i]) { j = 0; while(hosts[i][j]) { fprintf(stderr, "\thosts[%d][%d] - %s\n", i, j, hosts[i][j]); ++j; } ++i; } } else { totalResult++; fprintf(stderr, "waah! hdfsGetHosts - FAILED!\n"); } // setting tmp dir to 777 so later when connectAsUser nobody, we can write to it // chown write fprintf(stderr, "hdfsChown: %s\n", ((result = hdfsChown(fs, writePath, NULL, "users")) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsChown: %s\n", ((result = hdfsChown(fs, writePath, newOwner, NULL)) != 0 ? "Failed!" : "Success!")); totalResult += result; // chmod write fprintf(stderr, "hdfsChmod: %s\n", ((result = hdfsChmod(fs, writePath, newPerm)) != 0 ? "Failed!" : "Success!")); totalResult += result; sleep(2); newMtime = time(NULL); newAtime = time(NULL); // utime write fprintf(stderr, "hdfsUtime: %s\n", ((result = hdfsUtime(fs, writePath, newMtime, newAtime)) != 0 ? "Failed!" : "Success!")); totalResult += result; // chown/chmod/utime read finfo = hdfsGetPathInfo(fs, writePath); fprintf(stderr, "hdfsChown read: %s\n", ((result = (strcmp(finfo->mOwner, newOwner))) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsChmod read: %s\n", ((result = (finfo->mPermissions != newPerm)) != 0 ? "Failed!" : "Success!")); totalResult += result; // will later use /tmp/ as a different user so enable it fprintf(stderr, "hdfsChmod: %s\n", ((result = hdfsChmod(fs, "/tmp/", 0777)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr,"newMTime=%ld\n",newMtime); fprintf(stderr,"curMTime=%ld\n",finfo->mLastMod); fprintf(stderr, "hdfsUtime read (mtime): %s\n", ((result = (finfo->mLastMod != newMtime)) != 0 ? "Failed!" : "Success!")); totalResult += result; // No easy way to turn on access times from hdfs_test right now // fprintf(stderr, "hdfsUtime read (atime): %s\n", ((result = (finfo->mLastAccess != newAtime)) != 0 ? "Failed!" : "Success!")); // totalResult += result; hdfsFreeFileInfo(finfo, 1); // Clean up fprintf(stderr, "hdfsDelete: %s\n", ((result = hdfsDelete(fs, newDirectory, 1)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsDelete: %s\n", ((result = hdfsDelete(fs, srcPath, 1)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsDelete: %s\n", ((result = hdfsDelete(lfs, srcPath, 1)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsDelete: %s\n", ((result = hdfsDelete(lfs, dstPath, 1)) != 0 ? "Failed!" : "Success!")); totalResult += result; fprintf(stderr, "hdfsExists: %s\n", ((result = hdfsExists(fs, newDirectory)) != 0 ? "Success!" : "Failed!")); totalResult += (result ? 0 : 1); } { // TEST APPENDS // CREATE appendFile = hdfsOpenFile(fs, appendPath, O_WRONLY, 0, 0, 0); if(!appendFile) { fprintf(stderr, "Failed to open %s for writing!\n", appendPath); exit(-1); } fprintf(stderr, "Opened %s for writing successfully...\n", appendPath); buffer3 = "Hello,"; num_written_bytes = hdfsWrite(fs, appendFile, (void*)buffer3, (tSize)strlen(buffer3)); fprintf(stderr, "Wrote %d bytes\n", num_written_bytes); if (hdfsFlush(fs, appendFile)) { fprintf(stderr, "Failed to 'flush' %s\n", appendPath); exit(-1); } fprintf(stderr, "Flushed %s successfully!\n", appendPath); hdfsCloseFile(fs, appendFile); // RE-OPEN appendFile = hdfsOpenFile(fs, appendPath, O_WRONLY|O_APPEND, 0, 0, 0); if(!appendFile) { fprintf(stderr, "Failed to open %s for writing!\n", appendPath); exit(-1); } fprintf(stderr, "Opened %s for writing successfully...\n", appendPath); buffer3 = " World"; num_written_bytes = hdfsWrite(fs, appendFile, (void*)buffer3, (tSize)(strlen(buffer3) + 1)); fprintf(stderr, "Wrote %d bytes\n", num_written_bytes); if (hdfsFlush(fs, appendFile)) { fprintf(stderr, "Failed to 'flush' %s\n", appendPath); exit(-1); } fprintf(stderr, "Flushed %s successfully!\n", appendPath); hdfsCloseFile(fs, appendFile); // CHECK size finfo = hdfsGetPathInfo(fs, appendPath); fprintf(stderr, "fileinfo->mSize: == total %s\n", ((result = (finfo->mSize == (tOffset)(strlen("Hello, World") + 1))) == 1 ? "Success!" : "Failed!")); totalResult += (result ? 0 : 1); // READ and check data readFile = hdfsOpenFile(fs, appendPath, O_RDONLY, 0, 0, 0); if (!readFile) { fprintf(stderr, "Failed to open %s for reading!\n", appendPath); exit(-1); } num_read_bytes = hdfsRead(fs, readFile, (void*)rdbuffer, sizeof(rdbuffer)); fprintf(stderr, "Read following %d bytes:\n%s\n", num_read_bytes, rdbuffer); fprintf(stderr, "read == Hello, World %s\n", ((result = (strcmp(rdbuffer, "Hello, World"))) == 0 ? "Success!" : "Failed!")); hdfsCloseFile(fs, readFile); // DONE test appends } totalResult += (hdfsDisconnect(fs) != 0); { // // Now test as connecting as a specific user // This is only meant to test that we connected as that user, not to test // the actual fs user capabilities. Thus just create a file and read // the owner is correct. fs = hdfsConnectAsUserNewInstance("default", 0, tuser); if(!fs) { fprintf(stderr, "Oops! Failed to connect to hdfs as user %s!\n",tuser); exit(-1); } userFile = hdfsOpenFile(fs, userPath, O_WRONLY|O_CREAT, 0, 0, 0); if(!userFile) { fprintf(stderr, "Failed to open %s for writing!\n", userPath); exit(-1); } fprintf(stderr, "Opened %s for writing successfully...\n", userPath); num_written_bytes = hdfsWrite(fs, userFile, (void*)fileContents, (tSize)(strlen(fileContents)+1)); fprintf(stderr, "Wrote %d bytes\n", num_written_bytes); if (hdfsFlush(fs, userFile)) { fprintf(stderr, "Failed to 'flush' %s\n", userPath); exit(-1); } fprintf(stderr, "Flushed %s successfully!\n", userPath); hdfsCloseFile(fs, userFile); finfo = hdfsGetPathInfo(fs, userPath); fprintf(stderr, "hdfs new file user is correct: %s\n", ((result = (strcmp(finfo->mOwner, tuser))) != 0 ? "Failed!" : "Success!")); totalResult += result; } totalResult += (hdfsDisconnect(fs) != 0); if (totalResult != 0) { return -1; } else { return 0; } }
static int doTestHdfsOperations(struct tlhThreadInfo *ti, hdfsFS fs) { char prefix[256], tmp[256]; hdfsFile file; int ret, expected; hdfsFileInfo *fileInfo; snprintf(prefix, sizeof(prefix), "/tlhData%04d", ti->threadIdx); if (hdfsExists(fs, prefix) == 0) { EXPECT_ZERO(hdfsDelete(fs, prefix, 1)); } EXPECT_ZERO(hdfsCreateDirectory(fs, prefix)); snprintf(tmp, sizeof(tmp), "%s/file", prefix); EXPECT_NONNULL(hdfsOpenFile(fs, tmp, O_RDONLY, 0, 0, 0)); file = hdfsOpenFile(fs, tmp, O_WRONLY, 0, 0, 0); EXPECT_NONNULL(file); /* TODO: implement writeFully and use it here */ expected = (int)strlen(prefix); ret = hdfsWrite(fs, file, prefix, expected); if (ret < 0) { ret = errno; fprintf(stderr, "hdfsWrite failed and set errno %d\n", ret); return ret; } if (ret != expected) { fprintf(stderr, "hdfsWrite was supposed to write %d bytes, but " "it wrote %d\n", ret, expected); return EIO; } EXPECT_ZERO(hdfsFlush(fs, file)); EXPECT_ZERO(hdfsCloseFile(fs, file)); /* Let's re-open the file for reading */ file = hdfsOpenFile(fs, tmp, O_RDONLY, 0, 0, 0); EXPECT_NONNULL(file); /* TODO: implement readFully and use it here */ ret = hdfsRead(fs, file, tmp, sizeof(tmp)); if (ret < 0) { ret = errno; fprintf(stderr, "hdfsRead failed and set errno %d\n", ret); return ret; } if (ret != expected) { fprintf(stderr, "hdfsRead was supposed to read %d bytes, but " "it read %d\n", ret, expected); return EIO; } EXPECT_ZERO(memcmp(prefix, tmp, expected)); EXPECT_ZERO(hdfsCloseFile(fs, file)); snprintf(tmp, sizeof(tmp), "%s/file", prefix); EXPECT_NONZERO(hdfsChown(fs, tmp, NULL, NULL)); EXPECT_ZERO(hdfsChown(fs, tmp, NULL, "doop")); fileInfo = hdfsGetPathInfo(fs, tmp); EXPECT_NONNULL(fileInfo); EXPECT_ZERO(strcmp("doop", fileInfo->mGroup)); hdfsFreeFileInfo(fileInfo, 1); EXPECT_ZERO(hdfsChown(fs, tmp, "ha", "doop2")); fileInfo = hdfsGetPathInfo(fs, tmp); EXPECT_NONNULL(fileInfo); EXPECT_ZERO(strcmp("ha", fileInfo->mOwner)); EXPECT_ZERO(strcmp("doop2", fileInfo->mGroup)); hdfsFreeFileInfo(fileInfo, 1); EXPECT_ZERO(hdfsChown(fs, tmp, "ha2", NULL)); fileInfo = hdfsGetPathInfo(fs, tmp); EXPECT_NONNULL(fileInfo); EXPECT_ZERO(strcmp("ha2", fileInfo->mOwner)); EXPECT_ZERO(strcmp("doop2", fileInfo->mGroup)); hdfsFreeFileInfo(fileInfo, 1); EXPECT_ZERO(hdfsDelete(fs, prefix, 1)); return 0; }