hdf5/test/srb_append.c

/*
 * Copyright (C) 2000 NCSA
 *                    All rights reserved.
 *
 * Programmer: Raymond Lu <slu@ncsa.uiuc.edu>
 *             April 14, 2000
 *
 * Purpose:    Test HDF-SRB if it is configured and compiled.  Append an 
 *             integer dataset to an existent HDF5 file with an integer array 
 *             on SRB server.  
 *
 * Usage:      The HDF5 is built on the top of SRB.  So you just need to 
 *             activate a connection to SRB server by calling function
 *             H5Pset_fapl_srb()(after creating file property list by calling 
 *             H5Pcreate()).  All server information is passed in through its
 *             parameter SRB_Info(a structure).  Its fields are 
 *                 char *srbHost: SRB host address of server.  If the input is
 *                     NULL, it will use the environment varible "srbHost" if 
 *                     it is defined.  If it is not defined, the 
 *                     ~/.srb/.MdasEnd file will be checked next.  If not, it 
 *                     will use the hostname of the client machine.           
 *                 char *srbPort: SRB host port number of server.  If the 
 *                     input value is NULL, it will use the env variable 
 *                     "srbPort" if it is defined.  If not, it defaults to 
 *                     5558.  
 *                 char *srbAuth: SRB Authentication-password.  It is used to
 *                     define password for MDAS or SEA authentication.  
 *                     For SEA authentication, this is the password used by 
 *                     the SEA library to decrypt the encrypted private key 
 *                     stored in the file ~/.SEAuuuuu@ddddd(where uuuuu is 
 *                     the user ID and ddddd is the user domain name).  This 
 *                     input is not needed if an unencrypted private key is 
 *                     available in the /tmp directory(generated using the 
 *                     'seaauth auto' command).  To provide additional 
 *                     flexibility, a client may also use the environment 
 *                     variable "srbAuth" to specify the password.  A client 
 *                     may also supply the password in the ~/.srb/.MdasAuth 
 *                     file.  If a client uses more than one method to specfy 
 *                     the password, the value given in this function call 
 *                     will take precedent, then the environment variable 
 *                     "srbAuth", and lastly, the ~/.srb/.MdasAuth file. 
 *                 int  storSysType: Storage system type on SRB server. 
 *                     0=Unix, 1=UniTree, 2=HPSS, 3=FTP, 4=HTTP               
 *                 int  mode: File access mode, same definition with Unix.
 *                 int  size: File Size, only valid for HPSS, -1 is default
 *
 *             Then you can open an HDF5 file by calling H5Fopen().  When
 *             you pass in the file name, it has to be file name with an 
 *             absolute path.  It you use SDSC server(ghidorah.sdsc.edu), your 
 *             home directory is possibly in /projects/mdas/srb/SRBVault/. 
 */
#include <h5test.h>

#ifndef H5_HAVE_SRB
int main(void)
{
    printf("Test skipped because SRB driver not available\n");
    return 0;
}
#else

#define fileName "/projects/mdas/srb/SRBVault/slu.ncsa/a.h5"
#define DATASETNAME "Int1Array"
#define NX     5                      /* dataset dimensions */
#define NY     6
#define RANK   2

int main(void)
{
  SRB_Info srb_info={   NULL,    /* Use the server name in ~/.srb/MdasEnv    */
                        NULL,    /* Use the server port number in 
                                  * ~/.srb/MdasEnv                           */
                        NULL,    /* Use the password in ~/.srb/MdasAuth      */
                        0,       /* Using Unix storage system.               */
                        0600,    /* Open file for read and write for owner   */
                        -1       /* default                                  */
                    };
    hid_t         fapl =-1, file;
    hid_t         dataspace, datatype, dataset;
    hsize_t       dimsf[2];
  
    herr_t        status = 0;
    int           data[NX][NY];          /* data to write */
    int           i, j;

    /* 
     * Data  and output buffer initialization. 
     */
    for (j = 0; j < NX; j++) {
        for (i = 0; i < NY; i++)
            data[j][i] = i*i + j*j;
    }     
    /*
     *  0   1  4  9 16 25 
     *  1   2  5 10 17 26
     *  4   5  8 13 20 29
     *  9  10 13 18 25 34
     * 16  17 20 25 32 41
     */
  
    /* Create access property list and set the driver to GASS */
    fapl = H5Pcreate (H5P_FILE_ACCESS);
         if (fapl < 0) {
             printf (" H5Pcreate failed. \n");
             return -1;
    }
    status = H5Pset_fapl_srb (fapl, srb_info);
    if (status < 0) {
         printf ("H5Pset_fapl_gass failed. \n");
         return -1;
    }

    /*
     * Open an existing file using H5F_ACC_RDWR access,
     * and srb file access properties.
     */
    file = H5Fopen(fileName, H5F_ACC_RDWR, fapl);
    if (file < 0) {
        printf ("H5Fopen failed. \n");
        return -1;
    }
  
    /*
     * Describe the size of the array and create the data space for fixed
     * size dataset. 
     */
    dimsf[0] = NX;
    dimsf[1] = NY;
    dataspace = H5Screate_simple(RANK, dimsf, NULL); 
    if (dataspace < 0) {
      printf ("H5Screate failed. \n");
      return -1;
    }

    /* 
     * Define datatype for the data in the file.
     * We will store little endian INT numbers.
     */
    datatype = H5Tcopy(H5T_NATIVE_INT);
    if (datatype < 0) {
      printf ("H5Tcopy failed. \n");
      return -1;
    }
    
    status = H5Tset_order(datatype, H5T_ORDER_LE);
    if (status < 0) {
      printf ("H5Tset_order failed. \n");
      return -1;
    }

    /*
     * Create a new dataset within the file using defined dataspace and
     * datatype and default dataset creation properties.
     */
    dataset = H5Dcreate(file, DATASETNAME, datatype, dataspace,
			H5P_DEFAULT);
    if (dataset < 0) {
      printf ("H5Dcreate failed. \n");
      return -1;
    }

    /*
     * Write the data to the dataset using default transfer properties.
     */
    status = H5Dwrite(dataset, H5T_NATIVE_INT, H5S_ALL, H5S_ALL,
		      H5P_DEFAULT, data);
    if (status < 0) {
      printf ("H5Dwrite failed. \n");
      return -1;
    }

    /*
     * Close/release resources.
     */
    H5Sclose(dataspace);
    H5Tclose(datatype);
    H5Dclose(dataset);
    H5Fclose(file);
    H5Pclose(fapl);
    
    printf("Test finished!\n");
    return 0;
}

#endif