int map_snapshot_items(GPtrArray *snapshots_array, GPtrArray *target_array, map_snapshot_item_function map_snapshot_item, complete_snapshot_item_mapping_function complete_snapshot_item_mapping)
{
unsigned int num_processed = 0;
int status = TRUE;
GHashTable *pid_table = g_hash_table_new_full(g_int_hash, g_int_equal, g_free, NULL);
while(num_processed < snapshots_array->len)
{
unsigned int i;
for(i = 0; i < snapshots_array->len; i++)
{
SnapshotMapping *mapping = g_ptr_array_index(snapshots_array, i);
Target *target = find_target(target_array, mapping->target);
if(!mapping->transferred && request_available_target_core(target)) /* Check if machine has any cores available, if not wait and try again later */
{
gchar **arguments = generate_activation_arguments(target, mapping->container); /* Generate an array of key=value pairs from container properties */
unsigned int arguments_length = g_strv_length(arguments); /* Determine length of the activation arguments array */
pid_t pid = map_snapshot_item(mapping, target, arguments, arguments_length);
gint *pid_ptr;
/* Add pid and mapping to the hash table */
pid_ptr = g_malloc(sizeof(gint));
*pid_ptr = pid;
g_hash_table_insert(pid_table, pid_ptr, mapping);
/* Cleanup */
g_strfreev(arguments);
}
}
if(!wait_to_complete_snapshot_item(pid_table, target_array, complete_snapshot_item_mapping))
status = FALSE;
num_processed++;
}
g_hash_table_destroy(pid_table);
return status;
}
static ActivationStatus activate(GPtrArray *union_array, const ActivationMappingKey *key, GPtrArray *target_array, const gboolean dry_run, GHashTable *pids)
{
/* Retrieve the mapping from the union array */
ActivationMapping *actual_mapping = find_activation_mapping(union_array, key);
/* First, activate all inter-dependency mappings */
if(actual_mapping->depends_on != NULL)
{
unsigned int i;
ActivationStatus status;
for(i = 0; i < actual_mapping->depends_on->len; i++)
{
ActivationMappingKey *dependency = g_ptr_array_index(actual_mapping->depends_on, i);
status = activate(union_array, dependency, target_array, dry_run, pids);
if(status != ACTIVATION_DONE)
return status; /* If any of the inter-dependencies has not been activated yet, relay its status */
}
}
/* Finally, activate the mapping itself if it is not activated yet */
switch(actual_mapping->status)
{
case ACTIVATIONMAPPING_DEACTIVATED:
{
Target *target = find_target(target_array, actual_mapping->target);
if(request_available_target_core(target)) /* Check if machine has any cores available, if not wait and try again later */
{
gchar **arguments = generate_activation_arguments(target); /* Generate an array of key=value pairs from infrastructure properties */
unsigned int arguments_size = g_strv_length(arguments); /* Determine length of the activation arguments array */
gchar *interface = find_target_client_interface(target);
pid_t pid;
print_activation_step(TRUE, actual_mapping, arguments, arguments_size); /* Print debug message */
if(dry_run)
pid = exec_true(); /* Execute dummy process */
else
pid = exec_activate(interface, actual_mapping->target, actual_mapping->type, arguments, arguments_size, actual_mapping->service); /* Execute the activation operation asynchronously */
/* Cleanup */
g_strfreev(arguments);
if(pid == -1)
{
g_printerr("[target: %s]: Cannot fork activation process of service: %s!\n", actual_mapping->target, actual_mapping->key);
return ACTIVATION_ERROR;
}
else
{
gint *pidKey = g_malloc(sizeof(gint));
*pidKey = pid;
actual_mapping->status = ACTIVATIONMAPPING_IN_PROGRESS; /* Mark activation mapping as in progress */
g_hash_table_insert(pids, pidKey, actual_mapping); /* Add mapping to the pids table so that we can retrieve its status later */
return ACTIVATION_IN_PROGRESS;
}
}
else
return ACTIVATION_WAIT;
}
case ACTIVATIONMAPPING_ACTIVATED:
return ACTIVATION_DONE;
case ACTIVATIONMAPPING_IN_PROGRESS:
return ACTIVATION_IN_PROGRESS;
default:
return ACTIVATION_ERROR; /* Should never happen */
}
}
static int deactivate(GPtrArray *union_array, const ActivationMappingKey *key, GPtrArray *target_array, const gboolean dry_run, GHashTable *pids)
{
/* Retrieve the mapping from the union array */
ActivationMapping *actual_mapping = find_activation_mapping(union_array, key);
/* Find all interdependent mapping on this mapping */
GPtrArray *interdependent_mappings = find_interdependent_mappings(union_array, actual_mapping);
/* First deactivate all mappings which have an inter-dependency on this mapping */
unsigned int i;
for(i = 0; i < interdependent_mappings->len; i++)
{
ActivationMapping *dependency_mapping = g_ptr_array_index(interdependent_mappings, i);
ActivationStatus status = deactivate(union_array, (ActivationMappingKey*)dependency_mapping, target_array, dry_run, pids);
if(status != ACTIVATION_DONE)
{
g_ptr_array_free(interdependent_mappings, TRUE);
return status; /* If any inter-dependency is not deactivated, relay its status */
}
}
g_ptr_array_free(interdependent_mappings, TRUE);
/* Finally deactivate the mapping itself if it has not been deactivated yet */
switch(actual_mapping->status)
{
case ACTIVATIONMAPPING_ACTIVATED:
{
Target *target = find_target(target_array, actual_mapping->target);
if(target == NULL)
{
g_print("[target: %s]: Skip deactivation of service with key: %s deploying package: %s since machine is not present!\n", actual_mapping->key, actual_mapping->target, actual_mapping->service);
actual_mapping->status = ACTIVATIONMAPPING_DEACTIVATED;
return ACTIVATION_DONE;
}
else if(request_available_target_core(target))
{
gchar **arguments = generate_activation_arguments(target); /* Generate an array of key=value pairs from infrastructure properties */
unsigned int arguments_size = g_strv_length(arguments); /* Determine length of the activation arguments array */
gchar *interface = find_target_client_interface(target);
pid_t pid;
print_activation_step(FALSE, actual_mapping, arguments, arguments_size); /* Print debug message */
if(dry_run)
pid = exec_true(); /* Execute dummy process */
else
pid = exec_deactivate(interface, actual_mapping->target, actual_mapping->type, arguments, arguments_size, actual_mapping->service); /* Execute the deactivation operation asynchronously */
/* Cleanup */
g_free(arguments);
if(pid == -1)
{
g_printerr("[target: %s]: Cannot fork deactivation process of service: %s!\n", actual_mapping->target, actual_mapping->key);
return ACTIVATION_ERROR;
}
else
{
gint *pidKey = g_malloc(sizeof(gint));
*pidKey = pid;
actual_mapping->status = ACTIVATIONMAPPING_IN_PROGRESS; /* Mark activation mapping as in progress */
g_hash_table_insert(pids, pidKey, actual_mapping); /* Add mapping to the pids table so that we can retrieve its status later */
return ACTIVATION_IN_PROGRESS;
}
}
else
return ACTIVATION_WAIT;
}
case ACTIVATIONMAPPING_DEACTIVATED:
return ACTIVATION_DONE;
case ACTIVATIONMAPPING_IN_PROGRESS:
return ACTIVATION_IN_PROGRESS;
default:
return ACTIVATION_ERROR; /* Should never happen */
}
}