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/*
* asapo.c
*
* ASAP::O data interface
*
* Copyright © 2021 Deutsches Elektronen-Synchrotron DESY,
* a research centre of the Helmholtz Association.
*
* Authors:
* 2021 Thomas White <taw@physics.org>
*
* This file is part of CrystFEL.
*
* CrystFEL is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CrystFEL is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CrystFEL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <assert.h>
#include <unistd.h>
#include <asapo/consumer_c.h>
#include <image.h>
#include <utils.h>
#include "im-asapo.h"
#include "datatemplate_priv.h"
struct im_asapo
{
AsapoConsumerHandle consumer;
AsapoStringHandle group_id;
};
static void show_asapo_error(const char *msg, const AsapoErrorHandle err)
{
char buf[1024];
asapo_error_explain(err, buf, sizeof(buf));
ERROR("%s: %s\n", msg, buf);
}
char *im_asapo_make_unique_group_id(const char *endpoint,
const char *token,
const char *beamtime,
const char *path)
{
AsapoConsumerHandle consumer;
AsapoSourceCredentialsHandle cred;
AsapoStringHandle group_id;
AsapoErrorHandle err = asapo_new_handle();
cred = asapo_create_source_credentials(kProcessed, beamtime, "", "", token);
consumer = asapo_create_consumer(endpoint, path, 1, cred, &err);
asapo_free_handle(&cred);
if ( asapo_is_error(err) ) {
show_asapo_error("Cannot create temporary ASAP::O consumer", err);
asapo_free_handle(&consumer);
return NULL;
}
asapo_consumer_set_timeout(consumer, 1000);
group_id = asapo_consumer_generate_new_group_id(consumer, &err);
asapo_free_handle(&consumer);
if ( asapo_is_error(err) ) {
show_asapo_error("Cannot create ASAP::O group ID", err);
return NULL;
}
return strdup(asapo_string_c_str(group_id));
}
struct im_asapo *im_asapo_connect(const char *endpoint,
const char *token,
const char *beamtime,
const char *path,
const char *group_id)
{
struct im_asapo *a;
AsapoSourceCredentialsHandle cred;
AsapoErrorHandle err = asapo_new_handle();
a = malloc(sizeof(struct im_asapo));
if ( a == NULL ) return NULL;
cred = asapo_create_source_credentials(kProcessed, beamtime, "", "", token);
a->consumer = asapo_create_consumer(endpoint, path, 1, cred, &err);
asapo_free_handle(&cred);
if ( asapo_is_error(err) ) {
show_asapo_error("Cannot create ASAP::O consumer", err);
free(a);
return NULL;
}
asapo_consumer_set_timeout(a->consumer, 1000);
a->group_id = asapo_string_from_c_str(group_id);
return a;
}
void *im_asapo_fetch(struct im_asapo *a, size_t *pdata_size)
{
void *data_block;
AsapoMessageMetaHandle meta = asapo_new_handle();
AsapoMessageDataHandle data = asapo_new_handle();
AsapoErrorHandle err = asapo_new_handle();
asapo_consumer_get_next(a->consumer, a->group_id, &meta, &data,
"default", &err);
if ( asapo_is_error(err) ) {
show_asapo_error("Couldn't get next ASAP::O record", err);
return NULL;
}
STATUS("ASAP::O ID: %llu\n", asapo_message_meta_get_id(meta));
STATUS("ASAP::O filename: %s\n", asapo_message_meta_get_name(meta));
data_block = asapo_message_data_get_as_chars(data);
asapo_free_handle(&err);
asapo_free_handle(&meta);
asapo_free_handle(&data);
return data_block;
}
void im_asapo_shutdown(struct im_asapo *a)
{
if ( a == NULL ) return;
asapo_free_handle(&a->consumer);
asapo_free_handle(&a->group_id);
free(a);
}
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