osync_bool osync_sink_engine_write(OSyncSinkEngine *engine, OSyncArchive *archive, OSyncError **error)
{
OSyncList *o;
const char *objtype;
OSyncMember *member;
osync_assert(engine);
osync_assert(archive);
objtype = osync_obj_engine_get_objtype(engine->engine);
member = osync_client_proxy_get_member(engine->proxy);
for (o = engine->entries; o; o = o->next) {
OSyncMappingEntryEngine *entry_engine = o->data;
osync_assert(entry_engine);
if (osync_entry_engine_is_dirty(entry_engine)) {
OSyncChange *change = osync_entry_engine_get_change(entry_engine);
osync_assert(change);
osync_trace(TRACE_INTERNAL, "Writing change %s, changetype %i, format %s , objtype %s from member %i",
osync_change_get_uid(change),
osync_change_get_changetype(change),
osync_objformat_get_name(osync_change_get_objformat(change)),
osync_change_get_objtype(change),
osync_member_get_id(member));
if (!osync_client_proxy_commit_change(engine->proxy,
osync_obj_engine_commit_change_callback,
entry_engine, change, error))
goto error;
} else if (entry_engine->change) {
OSyncMapping *mapping = entry_engine->mapping_engine->mapping;
OSyncMappingEntry *entry = entry_engine->entry;
/* FIXME: Don't mix up in this function objtypes */
/* osync_assert_msg(!strcmp(objtype, osync_change_get_objtype(entry_engine->change), "Mixed-objtype in final write!")); */
if (osync_change_get_changetype(entry_engine->change) == OSYNC_CHANGE_TYPE_DELETED) {
if (!osync_archive_delete_change(archive, osync_mapping_entry_get_id(entry),
osync_change_get_objtype(entry_engine->change), error))
goto error;
} else {
if (!osync_archive_save_change(archive,
osync_mapping_entry_get_id(entry),
osync_change_get_uid(entry_engine->change),
osync_change_get_objtype(entry_engine->change),
osync_mapping_get_id(mapping),
osync_member_get_id(member), objtype, error))
goto error;
}
}
}
if (!osync_client_proxy_committed_all(engine->proxy, osync_obj_engine_written_callback, engine, objtype, error))
goto error;
return TRUE;
error:
return FALSE;
}
osync_bool osync_obj_engine_command(OSyncObjEngine *engine, OSyncEngineCmd cmd, OSyncError **error)
{
GList *p = NULL;
GList *m = NULL;
GList *e = NULL;
OSyncSinkEngine *sinkengine = NULL;
osync_trace(TRACE_ENTRY, "%s(%p, %i, %p)", __func__, engine, cmd, error);
osync_assert(engine);
switch (cmd) {
int write_sinks = 0;
osync_bool proxy_disconnect = FALSE;
case OSYNC_ENGINE_COMMAND_CONNECT:
for (p = engine->sink_engines; p; p = p->next) {
sinkengine = p->data;
if (!osync_client_proxy_connect(sinkengine->proxy, _osync_obj_engine_connect_callback, sinkengine, engine->objtype, engine->slowsync, error))
goto error;
}
break;
case OSYNC_ENGINE_COMMAND_READ:
for (p = engine->sink_engines; p; p = p->next) {
sinkengine = p->data;
for (m = sinkengine->entries; m; m = m->next) {
OSyncMappingEntryEngine *entry = m->data;
OSyncChange *change = entry->change;
if (!change)
continue;
if (!osync_client_proxy_read(sinkengine->proxy, _osync_obj_engine_read_ignored_callback, sinkengine, change, error))
goto error;
}
}
if (engine->archive) {
/* Flush the changelog - to avoid double entries of ignored entries */
if (!osync_archive_flush_ignored_conflict(engine->archive, engine->objtype, error))
goto error;
}
write_sinks = _osync_obj_engine_num_write_sinks(engine);
/* Get change entries since last sync. (get_changes) */
for (p = engine->sink_engines; p; p = p->next) {
OSyncMember *member = NULL;
OSyncObjTypeSink *objtype_sink = NULL;
sinkengine = p->data;
member = osync_client_proxy_get_member(sinkengine->proxy);
objtype_sink = osync_member_find_objtype_sink(member, engine->objtype);
/* Is there at least one other writeable sink? */
if (objtype_sink && osync_objtype_sink_get_write(objtype_sink) && write_sinks) {
_osync_obj_engine_read_callback(sinkengine->proxy, sinkengine, *error);
osync_trace(TRACE_INTERNAL, "no other writable sinks .... SKIP");
continue;
}
if (!osync_client_proxy_get_changes(sinkengine->proxy, _osync_obj_engine_read_callback, sinkengine, engine->objtype, engine->slowsync, error))
goto error;
}
break;
case OSYNC_ENGINE_COMMAND_WRITE:
if (engine->conflicts) {
osync_trace(TRACE_INTERNAL, "We still have conflict. Delaying write");
break;
}
if (engine->written) {
osync_trace(TRACE_INTERNAL, "Already written");
break;
}
engine->written = TRUE;
/* Write the changes. First, we can multiply the winner in the mapping */
osync_trace(TRACE_INTERNAL, "Preparing write. multiplying %i mappings", g_list_length(engine->mapping_engines));
for (m = engine->mapping_engines; m; m = m->next) {
OSyncMappingEngine *mapping_engine = m->data;
if (!osync_mapping_engine_multiply(mapping_engine, error))
goto error;
}
osync_trace(TRACE_INTERNAL, "Starting to write");
for (p = engine->sink_engines; p; p = p->next) {
OSyncMember *member = NULL;
long long int memberid = 0;
OSyncObjTypeSink *objtype_sink = NULL;
OSyncFormatConverterPath *path = NULL;
sinkengine = p->data;
member = osync_client_proxy_get_member(sinkengine->proxy);
memberid = osync_member_get_id(member);
objtype_sink = osync_member_find_objtype_sink(member, engine->objtype);
/* If sink could not be found use "data" sink if available */
if (!objtype_sink)
objtype_sink = osync_member_find_objtype_sink(member, "data");
/* TODO: Review if objtype_sink = NULL is valid at all. */
for (e = sinkengine->entries; e; e = e->next) {
OSyncMappingEntryEngine *entry_engine = e->data;
osync_assert(entry_engine);
/* Merger - Save the entire xml and demerge */
/* TODO: is here the right place to save the xml???? */
if (osync_group_get_merger_enabled(osync_engine_get_group(engine->parent)) &&
osync_group_get_converter_enabled(osync_engine_get_group(engine->parent)) &&
entry_engine->change &&
(osync_change_get_changetype(entry_engine->change) != OSYNC_CHANGE_TYPE_DELETED) &&
!strncmp(osync_objformat_get_name(osync_change_get_objformat(entry_engine->change)), "xmlformat-", 10) )
{
char *buffer = NULL;
unsigned int xmlformat_size = 0, size = 0;
OSyncXMLFormat *xmlformat = NULL;
const char *objtype = NULL;
OSyncMapping *mapping = NULL;
OSyncMerger *merger = NULL;
osync_trace(TRACE_INTERNAL, "Entry %s for member %lli: Dirty: %i", osync_change_get_uid(entry_engine->change), memberid, osync_entry_engine_is_dirty(entry_engine));
osync_trace(TRACE_INTERNAL, "Save the entire XMLFormat and demerge.");
objtype = osync_change_get_objtype(entry_engine->change);
mapping = entry_engine->mapping_engine->mapping;
osync_data_get_data(osync_change_get_data(entry_engine->change), (char **) &xmlformat, &xmlformat_size);
osync_assert(xmlformat_size == osync_xmlformat_size());
if(!osync_xmlformat_assemble(xmlformat, &buffer, &size)) {
osync_error_set(error, OSYNC_ERROR_GENERIC, "Could not assamble the xmlformat");
goto error;
}
if(!osync_archive_save_data(engine->archive, osync_mapping_get_id(mapping), objtype, buffer, size, error)) {
g_free(buffer);
goto error;
}
g_free(buffer);
merger = osync_member_get_merger(osync_client_proxy_get_member(sinkengine->proxy));
if(merger)
osync_merger_demerge(merger, xmlformat);
}
/* Only commit change if the objtype sink is able/allowed to write. */
if (objtype_sink && osync_objtype_sink_get_write(objtype_sink) && osync_entry_engine_is_dirty(entry_engine)) {
OSyncChange *change = entry_engine->change;
osync_assert(entry_engine->change);
/* Convert to requested target format if the changetype is not DELETED */
if (osync_group_get_converter_enabled(osync_engine_get_group(engine->parent)) && (osync_change_get_changetype(change) != OSYNC_CHANGE_TYPE_DELETED)) {
char *objtype = NULL;
OSyncList *format_sinks = NULL;
unsigned int length = 0;
OSyncFormatConverter *converter = NULL;
osync_trace(TRACE_INTERNAL, "Starting to convert from objtype %s and format %s", osync_change_get_objtype(entry_engine->change), osync_objformat_get_name(osync_change_get_objformat(entry_engine->change)));
/* We have to save the objtype of the change so that it does not get
* overwritten by the conversion */
objtype = g_strdup(osync_change_get_objtype(change));
/* Now we have to convert to one of the formats
* that the client can understand */
format_sinks = osync_objtype_sink_get_objformat_sinks(objtype_sink);
if (!format_sinks) {
osync_error_set(error, OSYNC_ERROR_GENERIC, "There are no available format sinks.");
goto error;
}
/* We cache the converter path for each sink/member couple */
if (!path) {
path = osync_format_env_find_path_formats_with_detectors(engine->formatenv, osync_change_get_data(entry_engine->change), format_sinks, osync_objtype_sink_get_preferred_format(objtype_sink), error);
}
if (!path)
goto error;
length = osync_converter_path_num_edges(path);
converter = osync_converter_path_nth_edge(path, length - 1);
if (converter) {
OSyncObjFormat *format = osync_converter_get_targetformat(converter);
OSyncObjFormatSink *formatsink = osync_objtype_sink_find_objformat_sink(objtype_sink, format);
osync_converter_path_set_config(path, osync_objformat_sink_get_config(formatsink));
}
if (!osync_format_env_convert(engine->formatenv, path, osync_change_get_data(entry_engine->change), error)) {
osync_converter_path_unref(path);
goto error;
}
osync_trace(TRACE_INTERNAL, "converted to format %s", osync_objformat_get_name(osync_change_get_objformat(entry_engine->change)));
osync_change_set_objtype(change, objtype);
g_free(objtype);
}
osync_trace(TRACE_INTERNAL, "Writing change %s, changetype %i, format %s , objtype %s from member %lli",
osync_change_get_uid(change),
osync_change_get_changetype(change),
osync_objformat_get_name(osync_change_get_objformat(change)),
osync_change_get_objtype(change),
osync_member_get_id(osync_client_proxy_get_member(sinkengine->proxy)));
if (!osync_client_proxy_commit_change(sinkengine->proxy, _osync_obj_engine_commit_change_callback, entry_engine, osync_entry_engine_get_change(entry_engine), error))
goto error;
} else if (entry_engine->change) {
OSyncMapping *mapping = entry_engine->mapping_engine->mapping;
OSyncMember *member = osync_client_proxy_get_member(sinkengine->proxy);
OSyncMappingEntry *entry = entry_engine->entry;
const char *objtype = osync_change_get_objtype(entry_engine->change);
if (engine->archive) {
if (osync_change_get_changetype(entry_engine->change) == OSYNC_CHANGE_TYPE_DELETED) {
if (!osync_archive_delete_change(engine->archive, osync_mapping_entry_get_id(entry), objtype, error))
goto error;
} else {
if (!osync_archive_save_change(engine->archive, osync_mapping_entry_get_id(entry), osync_change_get_uid(entry_engine->change), objtype, osync_mapping_get_id(mapping), osync_member_get_id(member), error))
goto error;
}
}
}
}
if (path)
osync_converter_path_unref(path);
if (!osync_client_proxy_committed_all(sinkengine->proxy, _osync_obj_engine_written_callback, sinkengine, engine->objtype, error))
goto error;
}
break;
case OSYNC_ENGINE_COMMAND_SYNC_DONE:
for (p = engine->sink_engines; p; p = p->next) {
sinkengine = p->data;
if (!osync_client_proxy_sync_done(sinkengine->proxy, _osync_obj_engine_sync_done_callback, sinkengine, engine->objtype, error))
goto error;
}
break;
case OSYNC_ENGINE_COMMAND_DISCONNECT:;
for (p = engine->sink_engines; p; p = p->next) {
sinkengine = p->data;
/* Don't call client disconnect functions if the sink is already disconnected.
This avoids unintended disconnect calls of clients/plugins which might not prepared
for a disconnect call when their never got connected. (testcases: *_connect_error, *_connect_timeout ..) */
if (!osync_sink_engine_is_connected(sinkengine))
continue;
proxy_disconnect = TRUE;
if (!osync_client_proxy_disconnect(sinkengine->proxy, _osync_obj_engine_disconnect_callback, sinkengine, engine->objtype, error))
goto error;
}
/* If no client needs to be disconnected, we MUST NOT expected any
disconnected_callback which generates an OSYNC_ENGINE_EVENT_DISCONNECTED event.
So we directly generate such event on our own. (testcases: double_connect_*, triple_connnect_*) */
if (!proxy_disconnect)
_osync_obj_engine_generate_event_disconnected(engine, NULL);
break;
case OSYNC_ENGINE_COMMAND_SOLVE:
case OSYNC_ENGINE_COMMAND_DISCOVER:
case OSYNC_ENGINE_COMMAND_ABORT:
break;
}
osync_trace(TRACE_EXIT, "%s", __func__);
return TRUE;
error:
osync_trace(TRACE_EXIT_ERROR, "%s: %s", __func__, osync_error_print(error));
return FALSE;
}
