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#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <limits.h>
#include <string.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <glusterfs/api/glfs.h>
#include <glusterfs/api/glfs-handles.h>
#define LOG_ERR(msg) \
do { \
fprintf(stderr, "%s : Error (%s)\n", msg, strerror(errno)); \
} while (0)
/*This test tests that shard xlator handles offset in appending writes
* correctly. This test performs writes of 1025 bytes 1025 times, in 5 threads
* with different threads. The buffer to be written is same character repeated
* 1025 times in the buffer for a thread. At the end it reads the buffer till
* end of file and tests that the read of 1025 bytes is always same character
* and the content read is 5*1025*1025 size. 1025 bytes is chosen because it
* will lead to write on more than one shard at some point when the size is
* going over the initial shard*/
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
int thread_data = '1';
glfs_t *
init_glfs(const char *hostname, const char *volname, const char *logfile)
{
int ret = -1;
glfs_t *fs = NULL;
fs = glfs_new(volname);
if (!fs) {
LOG_ERR("glfs_new failed");
return NULL;
}
ret = glfs_set_volfile_server(fs, "tcp", hostname, 24007);
if (ret < 0) {
LOG_ERR("glfs_set_volfile_server failed");
goto out;
}
ret = glfs_set_logging(fs, logfile, 7);
if (ret < 0) {
LOG_ERR("glfs_set_logging failed");
goto out;
}
ret = glfs_init(fs);
if (ret < 0) {
LOG_ERR("glfs_init failed");
goto out;
}
ret = 0;
out:
if (ret) {
glfs_fini(fs);
fs = NULL;
}
return fs;
}
void *
write_data(void *data)
{
char buf[1025] = {0};
glfs_fd_t *glfd = NULL;
glfs_t *fs = data;
int i = 0;
pthread_mutex_lock(&lock);
{
memset(buf, thread_data, sizeof(buf));
thread_data++;
}
pthread_mutex_unlock(&lock);
for (i = 0; i < 1025; i++) {
glfd = glfs_creat(fs, "parallel-write.txt", O_WRONLY | O_APPEND,
S_IRUSR | S_IWUSR | O_SYNC);
if (!glfd) {
LOG_ERR("Failed to create file");
exit(1);
}
if (glfs_write(glfd, buf, sizeof(buf), 0) < 0) {
LOG_ERR("Failed to write to file");
exit(1);
}
if (glfs_close(glfd) != 0) {
LOG_ERR("Failed to close file");
exit(1);
}
}
return NULL;
}
int
main(int argc, char *argv[])
{
pthread_t tid[5] = {0};
char buf[1025] = {0};
char cmp_buf[1025] = {0};
int ret = 0;
char *hostname = NULL;
char *volname = NULL;
char *logfile = NULL;
glfs_t *fs = NULL;
glfs_fd_t *glfd = NULL;
ssize_t bytes_read = 0;
ssize_t total_bytes_read = 0;
int i = 0;
if (argc != 4) {
fprintf(stderr, "Invalid argument\n");
exit(1);
}
hostname = argv[1];
volname = argv[2];
logfile = argv[3];
fs = init_glfs(hostname, volname, logfile);
if (fs == NULL) {
LOG_ERR("init_glfs failed");
return -1;
}
for (i = 0; i < 5; i++) {
pthread_create(&tid[i], NULL, write_data, fs);
}
for (i = 0; i < 5; i++) {
pthread_join(tid[i], NULL);
}
glfd = glfs_open(fs, "parallel-write.txt", O_RDONLY);
if (!glfd) {
LOG_ERR("Failed to open file for reading");
exit(1);
}
while ((bytes_read = glfs_read(glfd, buf, sizeof(buf), 0)) > 0) {
if (bytes_read != sizeof(buf)) {
fprintf(stderr,
"Didn't read complete data read: %zd "
"expected: %lu",
bytes_read, sizeof(buf));
exit(1);
}
total_bytes_read += bytes_read;
if (buf[0] < '1' || buf[0] >= thread_data) {
fprintf(stderr, "Invalid character found: %c", buf[0]);
exit(1);
}
memset(cmp_buf, buf[0], sizeof(cmp_buf));
if (memcmp(cmp_buf, buf, sizeof(cmp_buf))) {
LOG_ERR("Data corrupted");
exit(1);
}
memset(cmp_buf, 0, sizeof(cmp_buf));
}
if (total_bytes_read != 5 * 1025 * 1025) {
fprintf(stderr,
"Failed to read what is written, read; %zd, "
"expected %zu",
total_bytes_read, 5 * 1025 * 1025);
exit(1);
}
if (glfs_close(glfd) != 0) {
LOG_ERR("Failed to close");
exit(1);
}
return 0;
}
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