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cloud-setup: return structure for get_config() result instead of generic hash table

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Returning a struct seems easier to understand, because then the result
is typed.

Also, we might return additional results, which are system wide and not
per-interface.
This commit is contained in:
Thomas Haller
2021-09-01 09:30:29 +02:00
parent 580c244f04
commit 323e182768
3 changed files with 72 additions and 30 deletions
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54
src/nm-cloud-setup/main.c
View File

@@ -200,30 +200,30 @@ _nmc_get_device_by_hwaddr(NMClient *nmc, const char *hwaddr)
/*****************************************************************************/
typedef struct {
GMainLoop * main_loop;
GHashTable *config_dict;
GMainLoop * main_loop;
NMCSProviderGetConfigResult *result;
} GetConfigData;
static void
_get_config_cb(GObject *source, GAsyncResult *result, gpointer user_data)
_get_config_cb(GObject *source, GAsyncResult *res, gpointer user_data)
{
GetConfigData * data = user_data;
gs_unref_hashtable GHashTable *config_dict = NULL;
gs_free_error GError *error = NULL;
GetConfigData * data = user_data;
nm_auto_free_nmcs_provider_get_config_result NMCSProviderGetConfigResult *result = NULL;
gs_free_error GError *error = NULL;
config_dict = nmcs_provider_get_config_finish(NMCS_PROVIDER(source), result, &error);
result = nmcs_provider_get_config_finish(NMCS_PROVIDER(source), res, &error);
if (!config_dict) {
if (!result) {
if (!nm_utils_error_is_cancelled(error))
_LOGI("failure to get meta data: %s", error->message);
} else
_LOGD("meta data received");
data->config_dict = g_steal_pointer(&config_dict);
data->result = g_steal_pointer(&result);
g_main_loop_quit(data->main_loop);
}
static GHashTable *
static NMCSProviderGetConfigResult *
_get_config(GCancellable *sigterm_cancellable, NMCSProvider *provider, NMClient *nmc)
{
nm_auto_unref_gmainloop GMainLoop *main_loop = g_main_loop_new(NULL, FALSE);
@@ -243,7 +243,7 @@ _get_config(GCancellable *sigterm_cancellable, NMCSProvider *provider, NMClient
g_main_loop_run(main_loop);
return data.config_dict;
return data.result;
}
/*****************************************************************************/
@@ -396,13 +396,13 @@ _nmc_mangle_connection(NMDevice * device,
/*****************************************************************************/
static guint
_config_data_get_num_valid(GHashTable *config_dict)
_config_data_get_num_valid(const NMCSProviderGetConfigResult *result)
{
const NMCSProviderGetConfigIfaceData *config_data;
GHashTableIter h_iter;
guint n = 0;
g_hash_table_iter_init(&h_iter, config_dict);
g_hash_table_iter_init(&h_iter, result->iface_datas);
while (g_hash_table_iter_next(&h_iter, NULL, (gpointer *) &config_data)) {
if (nmcs_provider_get_config_iface_data_is_valid(config_data))
n++;
@@ -525,7 +525,9 @@ try_again:
}
static gboolean
_config_all(GCancellable *sigterm_cancellable, NMClient *nmc, GHashTable *config_dict)
_config_all(GCancellable * sigterm_cancellable,
NMClient * nmc,
const NMCSProviderGetConfigResult *result)
{
GHashTableIter h_iter;
const NMCSProviderGetConfigIfaceData *c_config_data;
@@ -533,9 +535,9 @@ _config_all(GCancellable *sigterm_cancellable, NMClient *nmc, GHashTable *config
gboolean is_single_nic;
gboolean any_changes = FALSE;
is_single_nic = (_config_data_get_num_valid(config_dict) <= 1);
is_single_nic = (_config_data_get_num_valid(result) <= 1);
g_hash_table_iter_init(&h_iter, config_dict);
g_hash_table_iter_init(&h_iter, result->iface_datas);
while (g_hash_table_iter_next(&h_iter, (gpointer *) &c_hwaddr, (gpointer *) &c_config_data)) {
if (_config_one(sigterm_cancellable, nmc, is_single_nic, c_hwaddr, c_config_data))
any_changes = TRUE;
@@ -564,12 +566,12 @@ sigterm_handler(gpointer user_data)
int
main(int argc, const char *const *argv)
{
gs_unref_object GCancellable * sigterm_cancellable = NULL;
nm_auto_destroy_and_unref_gsource GSource *sigterm_source = NULL;
gs_unref_object NMCSProvider *provider = NULL;
gs_unref_object NMClient *nmc = NULL;
gs_unref_hashtable GHashTable *config_dict = NULL;
gs_free_error GError *error = NULL;
gs_unref_object GCancellable * sigterm_cancellable = NULL;
nm_auto_destroy_and_unref_gsource GSource *sigterm_source = NULL;
gs_unref_object NMCSProvider *provider = NULL;
gs_unref_object NMClient * nmc = NULL;
nm_auto_free_nmcs_provider_get_config_result NMCSProviderGetConfigResult *result = NULL;
gs_free_error GError *error = NULL;
_nm_logging_enabled_init(g_getenv(NMCS_ENV_VARIABLE("NM_CLOUD_SETUP_LOG")));
@@ -614,17 +616,17 @@ main(int argc, const char *const *argv)
goto done;
}
config_dict = _get_config(sigterm_cancellable, provider, nmc);
if (!config_dict)
result = _get_config(sigterm_cancellable, provider, nmc);
if (!result)
goto done;
if (_config_all(sigterm_cancellable, nmc, config_dict))
if (_config_all(sigterm_cancellable, nmc, result))
_LOGI("some changes were applied for provider %s", nmcs_provider_get_name(provider));
else
_LOGD("no changes were applied for provider %s", nmcs_provider_get_name(provider));
done:
nm_clear_pointer(&config_dict, g_hash_table_unref);
nm_clear_pointer(&result, nmcs_provider_get_config_result_free);
g_clear_object(&nmc);
g_clear_object(&provider);

28
src/nm-cloud-setup/nmcs-provider.c
View File

@@ -49,6 +49,28 @@ nmcs_provider_get_main_context(NMCSProvider *self)
return nm_http_client_get_main_context(NMCS_PROVIDER_GET_PRIVATE(self)->http_client);
}
/*****************************************************************************/
static NMCSProviderGetConfigResult *
nmcs_provider_get_config_result_new(GHashTable *iface_datas)
{
NMCSProviderGetConfigResult *result;
result = g_new(NMCSProviderGetConfigResult, 1);
*result = (NMCSProviderGetConfigResult){
.iface_datas = g_hash_table_ref(iface_datas),
};
return result;
}
void
nmcs_provider_get_config_result_free(NMCSProviderGetConfigResult *result)
{
if (result) {
nm_g_hash_table_unref(result->iface_datas);
g_free(result);
}
}
/*****************************************************************************/
@@ -137,8 +159,8 @@ _get_config_task_maybe_return(NMCSProviderGetConfigTaskData *get_config_data, GE
} else {
_LOGD("get-config: success");
g_task_return_pointer(get_config_data->task,
g_hash_table_ref(get_config_data->result_dict),
(GDestroyNotify) g_hash_table_unref);
nmcs_provider_get_config_result_new(get_config_data->result_dict),
(GDestroyNotify) nmcs_provider_get_config_result_free);
}
nm_clear_g_signal_handler(g_task_get_cancellable(get_config_data->task),
@@ -217,7 +239,7 @@ nmcs_provider_get_config(NMCSProvider * self,
NMCS_PROVIDER_GET_CLASS(self)->get_config(self, get_config_data);
}
GHashTable *
NMCSProviderGetConfigResult *
nmcs_provider_get_config_finish(NMCSProvider *self, GAsyncResult *result, GError **error)
{
g_return_val_if_fail(NMCS_IS_PROVIDER(self), FALSE);

20
src/nm-cloud-setup/nmcs-provider.h
View File

@@ -43,6 +43,24 @@ nmcs_provider_get_config_iface_data_is_valid(const NMCSProviderGetConfigIfaceDat
NMCSProviderGetConfigIfaceData *nmcs_provider_get_config_iface_data_new(gboolean was_requested);
/*****************************************************************************/
typedef struct {
/* A dictionary of (const char *) -> (NMCSProviderGetConfigIfaceData *).
* This is the per-interface result of get_config(). */
GHashTable *iface_datas;
} NMCSProviderGetConfigResult;
void nmcs_provider_get_config_result_free(NMCSProviderGetConfigResult *result);
NM_AUTO_DEFINE_FCN0(NMCSProviderGetConfigResult *,
_nm_auto_free_nmcs_provider_get_config_result,
nmcs_provider_get_config_result_free);
#define nm_auto_free_nmcs_provider_get_config_result \
nm_auto(_nm_auto_free_nmcs_provider_get_config_result)
/*****************************************************************************/
typedef struct {
GTask *task;
@@ -124,7 +142,7 @@ void nmcs_provider_get_config(NMCSProvider * provider,
GAsyncReadyCallback callback,
gpointer user_data);
GHashTable *
NMCSProviderGetConfigResult *
nmcs_provider_get_config_finish(NMCSProvider *provider, GAsyncResult *result, GError **error);
#endif /* __NMCS_PROVIDER_H__ */