mgmt-get-uid-list.sm

/* 
 * (C) 2003 Clemson University and The University of Chicago 
 *
 * See COPYING in top-level directory.
 */

/** \file
 *  \ingroup mgmtint
 *
 *  PVFS management interface routines for obtaining server UID (user ID)
 *  information. This is used to determine which user's are sending
 *  requests to a given server.
 */
#include "client-state-machine.h"
#include "pvfs2-debug.h"
#include "job.h"
#include "gossip.h"
#include "pvfs2-mgmt.h"

extern job_context_id pint_client_sm_context;

static int get_uid_list_comp_fn(
    void* v_p, struct PVFS_server_resp *resp_p, int i);

%%

machine pvfs2_client_mgmt_get_uid_list_sm
{
    state setup_msgpair
    {
        run mgmt_get_uid_list_setup_msgpair;
        success => xfer_msgpair;
        default => cleanup;
    }

    state xfer_msgpair
    {
        jump pvfs2_msgpairarray_sm;
        default => cleanup;
    }

    state cleanup
    {
        run mgmt_get_uid_list_cleanup;
        default => terminate;
    }
}

%%

PVFS_error PVFS_imgmt_get_uid_list(
    PVFS_fs_id fs_id,
    PVFS_credentials *credentials,
    int server_count, 
    PVFS_BMI_addr_t *addr_array,
    uint32_t history,
    PVFS_uid_info_s **uid_info_array,
    uint32_t *uid_count,
    PVFS_mgmt_op_id *op_id,
    PVFS_hint hints,
    void *user_ptr)
{
    PINT_smcb *smcb = NULL;
    PINT_client_sm *sm_p = NULL;
    int ret = 0;

    gossip_debug(GOSSIP_CLIENT_DEBUG, 
                 "PVFS_imgmt_get_uid_list entered\n");

    if ((server_count < 1) || (!addr_array) || (history < 1) ||
        (!uid_info_array) || (!uid_count))
    {
        return -PVFS_EINVAL;
    }

    PINT_smcb_alloc(&smcb, PVFS_MGMT_GET_UID_LIST, 
             sizeof(struct PINT_client_sm),
             client_op_state_get_machine,
             client_state_machine_terminate,
             pint_client_sm_context);

    if (!smcb)
    {
        return -PVFS_ENOMEM;
    }

    sm_p = PINT_sm_frame(smcb, PINT_FRAME_CURRENT);           

    PINT_init_msgarray_params(sm_p, fs_id);
    PINT_init_sysint_credentials(sm_p->cred_p, credentials);
    sm_p->u.get_uid_list.uid_statistics = uid_info_array;
    sm_p->u.get_uid_list.history = history;
    sm_p->u.get_uid_list.fs_id = fs_id;
    sm_p->u.get_uid_list.server_count = server_count;
    sm_p->u.get_uid_list.addr_array = addr_array;
    sm_p->u.get_uid_list.uid_count = uid_count;
    PVFS_hint_copy(hints, &sm_p->hints);

    ret = PINT_msgpairarray_init(&sm_p->msgarray_op, server_count);
    if (ret != 0)
    {
       PINT_smcb_free(smcb);
       return ret;
    }

    return PINT_client_state_machine_post(
        smcb, op_id, user_ptr); 
}

PVFS_error PVFS_mgmt_get_uid_list(
    PVFS_fs_id fs_id,
    PVFS_credentials *credentials,
    int server_count, 
    PVFS_BMI_addr_t *addr_array,
    uint32_t history,
    PVFS_uid_info_s **uid_info_array,
    uint32_t *uid_count,
    PVFS_hint hints,
    void *user_ptr)
{
    PVFS_error ret = -PVFS_EINVAL, error = 0;
    PVFS_mgmt_op_id op_id;

    gossip_debug(GOSSIP_CLIENT_DEBUG,
                 "PVFS_mgmt_get_uid_list entered\n");

    ret = PVFS_imgmt_get_uid_list(fs_id, credentials, server_count, addr_array,
              history, uid_info_array, uid_count, &op_id, hints, NULL);
    if (ret)
    {
        PVFS_perror_gossip("PVFS_imgmt_get_uid_list call", ret);
        error = ret;
    }
    else
    {
        ret = PVFS_mgmt_wait(op_id, "get_uid_list", &error);
        if (ret)
        {
            PVFS_perror_gossip("PVFS_mgmt_wait call", ret);
            error = ret;
        }
    }

    gossip_debug(GOSSIP_CLIENT_DEBUG,
                 "PVFS_mgmt_get_uid_list completed\n");

    PINT_mgmt_release(op_id);
    return error;
}

static PINT_sm_action mgmt_get_uid_list_setup_msgpair(
        struct PINT_smcb *smcb, job_status_s *js_p)
{
    struct PINT_client_sm *sm_p = PINT_sm_frame(smcb, PINT_FRAME_CURRENT);
    int i = 0;
    PINT_sm_msgpair_state *msg_p = NULL;

    gossip_debug(GOSSIP_CLIENT_DEBUG, "get_uid_list state: "
                 "mgmt_get_uid_list_setup_msgpair\n");

    /* setup msgpair array */
    foreach_msgpair(&sm_p->msgarray_op, msg_p, i)
    {
	PINT_SERVREQ_MGMT_GET_UID_FILL(
            msg_p->req,
            *sm_p->cred_p,
            sm_p->u.get_uid_list.history,
            sm_p->hints);

	msg_p->fs_id = sm_p->u.get_uid_list.fs_id;
	msg_p->handle = PVFS_HANDLE_NULL;
	msg_p->retry_flag = PVFS_MSGPAIR_RETRY;
	msg_p->comp_fn = get_uid_list_comp_fn;
	msg_p->svr_addr = sm_p->u.get_uid_list.addr_array[i];
    }

    /* immediate return: next state jumps to msgpairarray machine */
    js_p->error_code = 0;

    PINT_sm_push_frame(smcb, 0, &sm_p->msgarray_op);
    return SM_ACTION_COMPLETE;
}

static PINT_sm_action mgmt_get_uid_list_cleanup(
        struct PINT_smcb *smcb, job_status_s *js_p)
{
    struct PINT_client_sm *sm_p = PINT_sm_frame(smcb, PINT_FRAME_CURRENT);

    PINT_msgpairarray_destroy(&sm_p->msgarray_op);

    sm_p->error_code  = js_p->error_code;

    PINT_SET_OP_COMPLETE;
    return SM_ACTION_TERMINATE;
}

static int get_uid_list_comp_fn(void* v_p,
				 struct PVFS_server_resp *resp_p,
				 int i)
{
    int j = 0;
    PINT_smcb *smcb = v_p;
    PINT_client_sm *sm_p = PINT_sm_frame(smcb, PINT_MSGPAIR_PARENT_SM);

    /* if this particular request was successful, then store the 
     * performance information in an array to be returned to caller
     */
    if (sm_p->msgarray_op.msgarray[i].op_status == 0)
    {
       (sm_p->u.get_uid_list.uid_count)[i] =
           resp_p->u.mgmt_get_uid.uid_info_array_count;
       memcpy(sm_p->u.get_uid_list.uid_statistics[i],
              resp_p->u.mgmt_get_uid.uid_info_array,
              resp_p->u.mgmt_get_uid.uid_info_array_count
              * sizeof(PVFS_uid_info_s));
    }
 
    /* if this is the last response, check all of the status values and 
     * return error code if any requests failed 
     */
    if (i == (sm_p->msgarray_op.count -1))
    {
	for (j=0; j < sm_p->msgarray_op.count; j++)
	{
	    if (sm_p->msgarray_op.msgarray[j].op_status != 0)
	    {
		return(sm_p->msgarray_op.msgarray[j].op_status);
	    }
	}
    }

    return 0;
}

/*
 * Local variables:
 *  mode: c
 *  c-indent-level: 4
 *  c-basic-offset: 4
 * End:
 *
 * vim: ft=c ts=8 sts=4 sw=4 expandtab
 */