amxb_ba_priv.c

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#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
 
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
 
#include <amxc/amxc.h>
#include <amxp/amxp.h>
 
#include <amxd/amxd_dm.h>
#include <amxd/amxd_object.h>
 
#include <amxb/amxb_be_intf.h>
#include <amxb/amxb.h>
#include <amxd/amxd_path.h>
 
#include "amxb_priv.h"
 
void amxb_dm_event_to_object_event(const char* const sig_name,
                                   const amxc_var_t* const data,
                                   void* const priv) {
    amxc_htable_it_t* sub_hit = (amxc_htable_it_t*) priv;
    const char* subscriber_object = amxc_htable_it_get_key(sub_hit);
    amxb_bus_ctx_t* ctx = amxc_container_of(sub_hit->ait->array, amxb_bus_ctx_t, subscriptions);
 
    amxc_var_add_key(cstring_t, (amxc_var_t*) data, "notification", sig_name);
    amxp_sigmngr_emit_signal(&ctx->sigmngr, subscriber_object, data);
}
 
amxd_object_t* amxb_fetch_local_object(amxb_bus_ctx_t* ctx,
                                       const char* obj_path) {
    amxd_dm_t* dm = ctx->dm;
    amxd_object_t* object = amxd_dm_findf(dm, "%s", obj_path);
    return object;
}
 
bool amxb_is_local_object(amxb_bus_ctx_t* ctx,
                          const char* obj_path) {
    amxd_dm_t* dm = ctx->dm;
    amxd_path_t path;
    amxd_object_t* object = NULL;
 
    amxd_path_init(&path, NULL);
    amxd_path_setf(&path, true, "%s", obj_path);
    when_null(dm, exit);
 
    while(object == NULL && !amxc_string_is_empty(&path.path)) {
        char* part = NULL;
        object = amxd_dm_findf(dm, "%s", amxd_path_get(&path, AMXD_OBJECT_TERMINATE));
        part = amxd_path_get_last(&path, true);
        free(part);
    }
 
exit:
    amxd_path_clean(&path);
    return object != NULL;
}
 
int amxb_follow_reference(amxb_bus_ctx_t* const bus_ctx,
                          amxd_path_t* reference,
                          int timeout) {
    int retval = amxd_status_unknown_error;
    amxc_var_t resolved;
    char* ref = amxd_path_get_reference_part(reference, true);
    uint32_t index = amxd_path_get_reference_index(reference);
    amxd_path_t ref_path;
    amxc_var_t* real_path = NULL;
 
    amxd_path_init(&ref_path, ref);
    amxc_var_init(&resolved);
 
    when_true(index == 0, exit);
    when_str_empty(amxd_path_get_param(&ref_path), exit);
    retval = amxb_get(bus_ctx, ref, 0, &resolved, timeout);
    when_failed(retval, exit);
 
    when_true(amxc_htable_size(amxc_var_constcast(amxc_htable_t, GETP_ARG(&resolved, "0"))) > 1, exit);
 
    real_path = amxc_var_get_pathf(&resolved, AMXC_VAR_FLAG_DEFAULT,
                                   "0.0.%s",
                                   amxd_path_get_param(&ref_path));
 
    amxc_var_cast(real_path, AMXC_VAR_ID_CSV_STRING);
    amxc_var_cast(real_path, AMXC_VAR_ID_LIST);
 
    if(index - 1 >= amxc_llist_size(amxc_var_constcast(amxc_llist_t, real_path))) {
        goto exit;
    }
 
    amxd_path_setf(&ref_path, true, "%s", GETI_CHAR(real_path, index - 1));
    amxd_path_prepend(reference, amxd_path_get(&ref_path, 0));
 
exit:
    amxd_path_clean(&ref_path);
    free(ref);
    amxc_var_clean(&resolved);
    return retval;
}
 
uint32_t amxb_be_get_capabilities(amxb_bus_ctx_t* bus_ctx) {
    uint32_t caps = AMXB_BE_DISCOVER_DESCRIBE | AMXB_BE_DISCOVER_LIST | AMXB_BE_DISCOVER_RESOLVE;
    const amxb_be_funcs_t* fns = NULL;
 
    when_null(bus_ctx, exit);
    fns = bus_ctx->bus_fn;
 
    if(amxb_is_valid_be_func(fns, capabilities, fns->capabilities)) {
        caps = fns->capabilities(bus_ctx->bus_ctx);
    }
 
exit:
    return caps;
}