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/*
* im-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 <profile.h>
#include "im-asapo.h"
#include "datatemplate_priv.h"
struct im_asapo
{
char *stream;
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);
}
struct im_asapo *im_asapo_connect(const char *endpoint,
const char *token,
const char *beamtime,
const char *group_id,
const char *data_source,
const char *stream)
{
struct im_asapo *a;
AsapoSourceCredentialsHandle cred;
AsapoErrorHandle err = asapo_new_handle();
if ( endpoint == NULL ) {
ERROR("ASAP::O endpoint not specified.\n");
return NULL;
}
if ( beamtime == NULL ) {
ERROR("ASAP::O beamtime not specified.\n");
return NULL;
}
if ( group_id == NULL ) {
ERROR("ASAP::O consumer group ID not specified.\n");
return NULL;
}
if ( data_source == NULL ) {
ERROR("ASAP::O data source not specified.\n");
return NULL;
}
if ( stream == NULL ) {
ERROR("ASAP::O stream not specified.\n");
return NULL;
}
a = malloc(sizeof(struct im_asapo));
if ( a == NULL ) return NULL;
cred = asapo_create_source_credentials(kProcessed,
"auto", /* instance ID */
"indexamajig", /* pipeline step */
beamtime,
"", /* beamline */
data_source,
token);
a->consumer = asapo_create_consumer(endpoint, "auto", 0, cred, &err);
asapo_free_handle(&cred);
if ( asapo_is_error(err) ) {
show_asapo_error("Cannot create ASAP::O consumer", err);
free(a);
return NULL;
}
a->stream = strdup(stream);
asapo_consumer_set_timeout(a->consumer, 3000);
a->group_id = asapo_string_from_c_str(group_id);
return a;
}
void *im_asapo_fetch(struct im_asapo *a, size_t *pdata_size,
char **pmeta, char **pfilename, char **pevent,
int *pfinished)
{
void *data_copy;
AsapoMessageMetaHandle meta;
AsapoMessageDataHandle data;
AsapoErrorHandle err;
uint64_t msg_size;
*pfinished = 0;
profile_start("create-handles");
err = asapo_new_handle();
meta = asapo_new_handle();
data = asapo_new_handle();
profile_end("create-handles");
profile_start("asapo-get-next");
asapo_consumer_get_next(a->consumer, a->group_id, &meta, &data,
a->stream, &err);
profile_end("asapo-get-next");
if ( asapo_error_get_type(err) == kEndOfStream ) {
asapo_free_handle(&err);
asapo_free_handle(&meta);
asapo_free_handle(&data);
*pfinished = 1;
return NULL;
}
if ( asapo_is_error(err) ) {
show_asapo_error("Couldn't get next ASAP::O record", err);
asapo_free_handle(&err);
asapo_free_handle(&meta);
asapo_free_handle(&data);
return NULL;
}
profile_start("get-size");
msg_size = asapo_message_meta_get_size(meta);
profile_end("get-size");
profile_start("malloc-copy");
data_copy = malloc(msg_size);
if ( data_copy == NULL ) {
ERROR("Failed to copy data block.\n");
asapo_free_handle(&err);
asapo_free_handle(&meta);
asapo_free_handle(&data);
return NULL;
}
memcpy(data_copy, asapo_message_data_get_as_chars(data), msg_size);
profile_end("malloc-copy");
profile_start("copy-meta");
*pmeta = strdup(asapo_message_meta_get_metadata(meta));
*pfilename = strdup(asapo_message_meta_get_name(meta));
*pevent = strdup("//");
profile_end("copy-meta");
asapo_free_handle(&err);
asapo_free_handle(&meta);
asapo_free_handle(&data);
*pdata_size = msg_size;
return data_copy;
}
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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