/*
* delete a given job log directory
* This function takes jobid and deletes the related logs.
*/
int delete_log_directory(const char *subdir, const char * good_local_dirs) {
char* job_log_dir = get_job_log_directory(subdir);
int ret = -1;
if (job_log_dir == NULL) return ret;
//delete the job log directory in <hadoop.log.dir>/userlogs/jobid
delete_path(job_log_dir, true);
char **local_dir = get_mapred_local_dirs(good_local_dirs);
char **local_dir_ptr;
for(local_dir_ptr = local_dir; *local_dir_ptr != NULL; ++local_dir_ptr) {
char *mapred_local_log_dir = concatenate("%s/userlogs/%s",
"mapred local job log dir",
2, *local_dir_ptr, subdir);
if (mapred_local_log_dir != NULL) {
//delete the job log directory in <mapred.local.dir>/userlogs/jobid
delete_path(mapred_local_log_dir, true);
free(mapred_local_log_dir);
}
else
fprintf(LOGFILE, "Failed to delete mapred local log dir for jobid %s\n",
subdir);
}
free(job_log_dir);
free_values(local_dir);
return 0;
}
void test_get_task_log_dir() {
char *logdir = get_job_log_directory("job_5/task_4");
char *expected = TEST_ROOT "/logs/userlogs/job_5/task_4";
if (strcmp(logdir, expected) != 0) {
printf("FAIL: get_task_log_dir expected %s got %s\n", logdir, expected);
}
free(logdir);
}
/**
* delete a given log directory
*/
int delete_log_directory(const char *subdir) {
char* log_subdir = get_job_log_directory(subdir);
int ret = -1;
if (log_subdir != NULL) {
ret = delete_path(log_subdir, strchr(subdir, '/') == NULL);
}
free(log_subdir);
return ret;
}
void test_get_job_log_dir() {
char *expected = TEST_ROOT "/logs/userlogs/job_200906101234_0001";
char *logdir = get_job_log_directory(TEST_ROOT "/logs/userlogs","job_200906101234_0001");
if (strcmp(logdir, expected) != 0) {
printf("Fail get_job_log_dir got %s expected %s\n", logdir, expected);
exit(1);
}
free(logdir);
}
void test_create_log_directory() {
printf("\nTesting test_create_log_directory\n");
create_userlogs_dir();
char *job_log_dir = get_job_log_directory("job_7");
if (job_log_dir == NULL) {
exit(1);
}
if (create_directory_for_user(job_log_dir) != 0) {
exit(1);
}
free(job_log_dir);
char* good_local_dirs = get_value("mapred.local.dir");
if (good_local_dirs == NULL) {
fprintf(LOGFILE, "Mapred local directories could not be obtained.\n");
exit(1);
}
create_attempt_directories(username, good_local_dirs, "job_7", "task_1");
//check if symlink got created
struct stat file;
int status;
char actualpath [PATH_MAX+1];
char *res;
char *filepath = TEST_ROOT "/logs/userlogs/job_7/task_1";
status = lstat(filepath, &file);
if (!S_ISLNK(file.st_mode)) {
fprintf(LOGFILE, "Symlink creation failed\n");
exit(1);
}
//Check if symlink path exists
res = realpath(filepath, actualpath);
if(!res) {
fprintf(LOGFILE, "Failed to get target for the symlink\n");
exit(1);
}
char local_job_dir[PATH_MAX+1];
int i;
bool found = false;
for(i=1; i<5; i++) {
sprintf(local_job_dir, TEST_ROOT "/local-%d/userlogs/job_7/task_1", i);
if (strcmp(local_job_dir, actualpath) == 0) {
found = true;
break;
}
}
if(!found) {
printf("FAIL: symlink path and target path mismatch\n");
exit(1);
}
free(good_local_dirs);
}
void test_delete_log_directory() {
printf("\nTesting delete_log_directory\n");
char *job_log_dir = get_job_log_directory("job_1");
if (job_log_dir == NULL) {
exit(1);
}
if (create_directory_for_user(job_log_dir) != 0) {
exit(1);
}
free(job_log_dir);
char *task_log_dir = get_job_log_directory("job_1/task_2");
if (task_log_dir == NULL) {
exit(1);
}
if (mkdirs(task_log_dir, 0700) != 0) {
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_1/task_2", R_OK) != 0) {
printf("FAIL: can't access task directory - %s\n", strerror(errno));
exit(1);
}
if (delete_log_directory("job_1/task_2") != 0) {
printf("FAIL: can't delete task directory\n");
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_1/task_2", R_OK) == 0) {
printf("FAIL: task directory not deleted\n");
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_1", R_OK) != 0) {
printf("FAIL: job directory not deleted - %s\n", strerror(errno));
exit(1);
}
if (delete_log_directory("job_1") != 0) {
printf("FAIL: can't delete task directory\n");
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_1", R_OK) == 0) {
printf("FAIL: job directory not deleted\n");
exit(1);
}
free(task_log_dir);
}
/**
* Function to prepare the attempt directories for the task JVM.
* It creates the task work and log directories.
*/
static int create_attempt_directories(const char* user, const char *job_id,
const char *task_id) {
// create dirs as 0750
const mode_t perms = S_IRWXU | S_IRGRP | S_IXGRP;
if (job_id == NULL || task_id == NULL || user == NULL) {
fprintf(LOGFILE,
"Either task_id is null or the user passed is null.\n");
return -1;
}
int result = 0;
char **local_dir = get_values(TT_SYS_DIR_KEY);
if (local_dir == NULL) {
fprintf(LOGFILE, "%s is not configured.\n", TT_SYS_DIR_KEY);
return -1;
}
char **local_dir_ptr;
for(local_dir_ptr = local_dir; *local_dir_ptr != NULL; ++local_dir_ptr) {
char *task_dir = get_attempt_work_directory(*local_dir_ptr, user, job_id,
task_id);
if (task_dir == NULL) {
free_values(local_dir);
return -1;
}
if (mkdirs(task_dir, perms) != 0) {
// continue on to create other task directories
free(task_dir);
} else {
free(task_dir);
}
}
free_values(local_dir);
// also make the directory for the task logs
char *job_task_name = malloc(strlen(job_id) + strlen(task_id) + 2);
if (job_task_name == NULL) {
fprintf(LOGFILE, "Malloc of job task name failed\n");
result = -1;
} else {
sprintf(job_task_name, "%s/%s", job_id, task_id);
char *log_dir = get_job_log_directory(job_task_name);
free(job_task_name);
if (log_dir == NULL) {
result = -1;
} else if (mkdirs(log_dir, perms) != 0) {
result = -1;
}
free(log_dir);
}
return result;
}
/**
* Function to prepare the job directories for the task JVM.
*/
int initialize_job(const char *user, const char *jobid,
const char* credentials, const char* job_xml,
char* const* args) {
if (jobid == NULL || user == NULL) {
fprintf(LOGFILE, "Either jobid is null or the user passed is null.\n");
return INVALID_ARGUMENT_NUMBER;
}
// create the user directory
int result = initialize_user(user);
if (result != 0) {
return result;
}
// create the log directory for the job
char *job_log_dir = get_job_log_directory(jobid);
if (job_log_dir == NULL) {
return -1;
}
result = create_directory_for_user(job_log_dir);
free(job_log_dir);
if (result != 0) {
return -1;
}
// open up the credentials file
int cred_file = open_file_as_task_tracker(credentials);
if (cred_file == -1) {
return -1;
}
int job_file = open_file_as_task_tracker(job_xml);
if (job_file == -1) {
return -1;
}
// give up root privs
if (change_user(user_detail->pw_uid, user_detail->pw_gid) != 0) {
return -1;
}
// 750
mode_t permissions = S_IRWXU | S_IRGRP | S_IXGRP;
char **tt_roots = get_values(TT_SYS_DIR_KEY);
if (tt_roots == NULL) {
return INVALID_CONFIG_FILE;
}
char **tt_root;
char *primary_job_dir = NULL;
for(tt_root=tt_roots; *tt_root != NULL; ++tt_root) {
char *job_dir = get_job_directory(*tt_root, user, jobid);
if (job_dir == NULL) {
// try the next one
} else if (mkdirs(job_dir, permissions) != 0) {
free(job_dir);
} else if (primary_job_dir == NULL) {
primary_job_dir = job_dir;
} else {
free(job_dir);
}
}
free_values(tt_roots);
if (primary_job_dir == NULL) {
fprintf(LOGFILE, "Did not create any job directories\n");
return -1;
}
char *cred_file_name = concatenate("%s/%s", "cred file", 2,
primary_job_dir, CREDENTIALS_FILENAME);
if (cred_file_name == NULL) {
return -1;
}
if (copy_file(cred_file, credentials, cred_file_name, S_IRUSR|S_IWUSR) != 0){
return -1;
}
char *job_file_name = concatenate("%s/%s", "job file", 2,
primary_job_dir, JOB_FILENAME);
if (job_file_name == NULL) {
return -1;
}
if (copy_file(job_file, job_xml, job_file_name,
S_IRUSR|S_IWUSR|S_IRGRP) != 0) {
return -1;
}
fclose(stdin);
fflush(LOGFILE);
if (LOGFILE != stdout) {
fclose(stdout);
}
fclose(stderr);
if (chdir(primary_job_dir)) {
fprintf(LOGFILE, "Failure to chdir to job dir - %s\n",
strerror(errno));
return -1;
}
execvp(args[0], args);
fprintf(LOGFILE, "Failure to exec job initialization process - %s\n",
strerror(errno));
return -1;
}
void test_run_task() {
printf("\nTesting run task\n");
if (seteuid(0) != 0) {
printf("FAIL: seteuid to root failed - %s\n", strerror(errno));
exit(1);
}
FILE* creds = fopen(TEST_ROOT "/creds.txt", "w");
if (creds == NULL) {
printf("FAIL: failed to create credentials file - %s\n", strerror(errno));
exit(1);
}
if (fprintf(creds, "secret key\n") < 0) {
printf("FAIL: fprintf failed - %s\n", strerror(errno));
exit(1);
}
if (fclose(creds) != 0) {
printf("FAIL: fclose failed - %s\n", strerror(errno));
exit(1);
}
const char* script_name = TEST_ROOT "/task-script";
FILE* script = fopen(script_name, "w");
if (script == NULL) {
printf("FAIL: failed to create script file - %s\n", strerror(errno));
exit(1);
}
if (seteuid(user_detail->pw_uid) != 0) {
printf("FAIL: failed to seteuid back to user - %s\n", strerror(errno));
exit(1);
}
if (fprintf(script, "#!/bin/bash\n"
"touch foobar\n"
"exit 0") < 0) {
printf("FAIL: fprintf failed - %s\n", strerror(errno));
exit(1);
}
if (fclose(script) != 0) {
printf("FAIL: fclose failed - %s\n", strerror(errno));
exit(1);
}
fflush(stdout);
fflush(stderr);
char* task_dir = get_attempt_work_directory(TEST_ROOT "/local-1",
username, "job_4", "task_1");
pid_t child = fork();
if (child == -1) {
printf("FAIL: failed to fork process for init_job - %s\n",
strerror(errno));
exit(1);
} else if (child == 0) {
if (run_task_as_user(username, "job_4", "task_1",
task_dir, script_name, TEST_ROOT "creds.txt") != 0) {
printf("FAIL: failed in child\n");
exit(42);
}
// should never return
exit(1);
}
int status = 0;
if (waitpid(child, &status, 0) <= 0) {
printf("FAIL: failed waiting for process %d - %s\n", child,
strerror(errno));
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_4/task_1", R_OK) != 0) {
printf("FAIL: failed to create task log directory\n");
exit(1);
}
if (access(task_dir, R_OK) != 0) {
printf("FAIL: failed to create task directory %s\n", task_dir);
exit(1);
}
char buffer[100000];
sprintf(buffer, "%s/foobar", task_dir);
if (access(buffer, R_OK) != 0) {
printf("FAIL: failed to create touch file %s\n", buffer);
exit(1);
}
free(task_dir);
task_dir = get_job_log_directory("logs", "job_4/task_1");
if (access(task_dir, R_OK) != 0) {
printf("FAIL: failed to create job log directory %s\n", task_dir);
exit(1);
}
free(task_dir);
}
void test_init_job() {
printf("\nTesting init job\n");
if (seteuid(0) != 0) {
printf("FAIL: seteuid to root failed - %s\n", strerror(errno));
exit(1);
}
FILE* creds = fopen(TEST_ROOT "/creds.txt", "w");
if (creds == NULL) {
printf("FAIL: failed to create credentials file - %s\n", strerror(errno));
exit(1);
}
if (fprintf(creds, "secret key\n") < 0) {
printf("FAIL: fprintf failed - %s\n", strerror(errno));
exit(1);
}
if (fclose(creds) != 0) {
printf("FAIL: fclose failed - %s\n", strerror(errno));
exit(1);
}
FILE* job_xml = fopen(TEST_ROOT "/job.xml", "w");
if (job_xml == NULL) {
printf("FAIL: failed to create job file - %s\n", strerror(errno));
exit(1);
}
if (fprintf(job_xml, "<jobconf/>\n") < 0) {
printf("FAIL: fprintf failed - %s\n", strerror(errno));
exit(1);
}
if (fclose(job_xml) != 0) {
printf("FAIL: fclose failed - %s\n", strerror(errno));
exit(1);
}
if (seteuid(user_detail->pw_uid) != 0) {
printf("FAIL: failed to seteuid back to user - %s\n", strerror(errno));
exit(1);
}
fflush(stdout);
fflush(stderr);
pid_t child = fork();
if (child == -1) {
printf("FAIL: failed to fork process for init_job - %s\n",
strerror(errno));
exit(1);
} else if (child == 0) {
char *final_pgm[] = {"touch", "my-touch-file", 0};
if (initialize_job(username, "job_4", TEST_ROOT "/creds.txt", final_pgm) != 0) {
printf("FAIL: failed in child\n");
exit(42);
}
// should never return
exit(1);
}
int status = 0;
if (waitpid(child, &status, 0) <= 0) {
printf("FAIL: failed waiting for process %d - %s\n", child,
strerror(errno));
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_4", R_OK) != 0) {
printf("FAIL: failed to create job log directory\n");
exit(1);
}
char* job_dir = get_job_directory(TEST_ROOT "/local-1", username, "job_4");
if (access(job_dir, R_OK) != 0) {
printf("FAIL: failed to create job directory %s\n", job_dir);
exit(1);
}
char buffer[100000];
sprintf(buffer, "%s/jobToken", job_dir);
if (access(buffer, R_OK) != 0) {
printf("FAIL: failed to create credentials %s\n", buffer);
exit(1);
}
sprintf(buffer, "%s/my-touch-file", job_dir);
if (access(buffer, R_OK) != 0) {
printf("FAIL: failed to create touch file %s\n", buffer);
exit(1);
}
free(job_dir);
job_dir = get_job_log_directory("logs","job_4");
if (access(job_dir, R_OK) != 0) {
printf("FAIL: failed to create job log directory %s\n", job_dir);
exit(1);
}
free(job_dir);
}
void test_delete_log_directory() {
printf("\nTesting delete_log_directory\n");
char* local_dirs = get_value("mapred.local.dir");
char *job_log_dir = get_job_log_directory("job_1");
if (job_log_dir == NULL) {
exit(1);
}
if (create_directory_for_user(job_log_dir) != 0) {
exit(1);
}
free(job_log_dir);
char *task_log_dir = get_job_log_directory("job_1/task_2");
if (task_log_dir == NULL) {
exit(1);
}
if (mkdirs(task_log_dir, 0700) != 0) {
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_1/task_2", R_OK) != 0) {
printf("FAIL: can't access task directory - %s\n", strerror(errno));
exit(1);
}
if (delete_log_directory("job_1/task_2", local_dirs) != 0) {
printf("FAIL: can't delete task directory\n");
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_1/task_2", R_OK) == 0) {
printf("FAIL: task directory not deleted\n");
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_1", R_OK) != 0) {
printf("FAIL: job directory not deleted - %s\n", strerror(errno));
exit(1);
}
if (delete_log_directory("job_1", local_dirs) != 0) {
printf("FAIL: can't delete task directory\n");
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_1", R_OK) == 0) {
printf("FAIL: job directory not deleted\n");
exit(1);
}
if (delete_log_directory("job_7", local_dirs) != 0) {
printf("FAIL: can't delete job directory\n");
exit(1);
}
if (access(TEST_ROOT "/logs/userlogs/job_7", R_OK) == 0) {
printf("FAIL: job log directory not deleted\n");
exit(1);
}
char local_job_dir[PATH_MAX+1];
int i;
for(i=1; i<5; i++) {
sprintf(local_job_dir, TEST_ROOT "/local-%d/userlogs/job_7", i);
if (access(local_job_dir, R_OK) == 0) {
printf("FAIL: job log directory in mapred local not deleted\n");
exit(1);
}
}
free(task_log_dir);
free(local_dirs);
}
/**
* Function to prepare the attempt directories for the task JVM.
* It creates the task work and log directories.
*/
int create_attempt_directories(const char* user,
const char * good_local_dirs, const char *job_id, const char *task_id) {
// create dirs as 0750
const mode_t perms = S_IRWXU | S_IRGRP | S_IXGRP;
if (job_id == NULL || task_id == NULL || user == NULL) {
fprintf(LOGFILE,
"Either task_id is null or the user passed is null.\n");
return -1;
}
int result = 0;
char **local_dir = get_mapred_local_dirs(good_local_dirs);
if (local_dir == NULL) {
fprintf(LOGFILE, "Good mapred local directories could not be obtained.\n");
return INVALID_TT_ROOT;
}
char **local_dir_ptr;
for(local_dir_ptr = local_dir; *local_dir_ptr != NULL; ++local_dir_ptr) {
char *task_dir = get_attempt_work_directory(*local_dir_ptr, user, job_id,
task_id);
if (task_dir == NULL) {
free_values(local_dir);
return -1;
}
if (mkdirs(task_dir, perms) != 0) {
// continue on to create other task directories
free(task_dir);
} else {
free(task_dir);
}
}
// also make the directory for the task logs
char *job_task_name = malloc(strlen(job_id) + strlen(task_id) + 2);
char *real_task_dir = NULL; // target of symlink
char *real_job_dir = NULL; // parent dir of target of symlink
char *random_local_dir = NULL;
char *link_task_log_dir = NULL; // symlink
if (job_task_name == NULL) {
fprintf(LOGFILE, "Malloc of job task name failed\n");
result = -1;
} else {
sprintf(job_task_name, "%s/%s", job_id, task_id);
link_task_log_dir = get_job_log_directory(job_task_name);
random_local_dir = get_random_local_dir(local_dir);
if(random_local_dir == NULL) {
result = -1;
goto cleanup;
}
real_job_dir = malloc(strlen(random_local_dir) + strlen(USERLOGS) +
strlen(job_id) + 3);
if (real_job_dir == NULL) {
fprintf(LOGFILE, "Malloc of real job directory failed\n");
result = -1;
goto cleanup;
}
real_task_dir = malloc(strlen(random_local_dir) + strlen(USERLOGS) +
strlen(job_id) + strlen(task_id) + 4);
if (real_task_dir == NULL) {
fprintf(LOGFILE, "Malloc of real task directory failed\n");
result = -1;
goto cleanup;
}
sprintf(real_job_dir, "%s/userlogs/%s", random_local_dir, job_id);
result = create_directory_for_user(real_job_dir);
if( result != 0) {
result = -1;
goto cleanup;
}
sprintf(real_task_dir, "%s/userlogs/%s/%s",
random_local_dir, job_id, task_id);
result = mkdirs(real_task_dir, perms);
if( result != 0) {
result = -1;
goto cleanup;
}
result = symlink(real_task_dir, link_task_log_dir);
if( result != 0) {
fprintf(LOGFILE, "Failed to create symlink %s to %s - %s\n",
link_task_log_dir, real_task_dir, strerror(errno));
result = -1;
}
}
cleanup:
free(random_local_dir);
free(job_task_name);
free(link_task_log_dir);
free(real_job_dir);
free(real_task_dir);
free_values(local_dir);
return result;
}
