X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=plugins%2Fctf%2Ffs-sink%2Fwrite.c;h=995d344b807d64c37cae0a0f3b6f3dee56d3a4e7;hb=885a8803311f24d33ae0bdd4b0b2adf8cc057a24;hp=91b9289929385c1420ac149608242ec823d73cbb;hpb=d8866baa7f1ae173ac9d9fac0ad55cb28f883cbf;p=babeltrace.git

diff --git a/plugins/ctf/fs-sink/write.c b/plugins/ctf/fs-sink/write.c
index 91b92899..995d344b 100644
--- a/plugins/ctf/fs-sink/write.c
+++ b/plugins/ctf/fs-sink/write.c
@@ -26,6 +26,9 @@
  * SOFTWARE.
  */
 
+#define BT_LOG_TAG "PLUGIN-CTF-FS-SINK-WRITE"
+#include "logging.h"
+
 #include <babeltrace/ctf-ir/event.h>
 #include <babeltrace/ctf-ir/packet.h>
 #include <babeltrace/ctf-ir/event-class.h>
@@ -35,56 +38,116 @@
 #include <babeltrace/ctf-ir/fields.h>
 #include <babeltrace/ctf-writer/stream-class.h>
 #include <babeltrace/ctf-writer/stream.h>
+#include <assert.h>
+#include <glib.h>
 
 #include <ctfcopytrace.h>
 
 #include "writer.h"
 
+static
+void unref_stream_class(struct bt_ctf_stream_class *writer_stream_class)
+{
+	bt_put(writer_stream_class);
+}
+
+static
+void unref_stream(struct bt_ctf_stream_class *writer_stream)
+{
+	bt_put(writer_stream);
+}
+
+static
+gboolean empty_ht(gpointer key, gpointer value, gpointer user_data)
+{
+	return TRUE;
+}
+
+static
+gboolean empty_streams_ht(gpointer key, gpointer value, gpointer user_data)
+{
+	int ret;
+	struct bt_ctf_stream *writer_stream = value;
+
+	ret = bt_ctf_stream_flush(writer_stream);
+	if (ret) {
+		BT_LOGD_STR("Failed to flush stream while emptying hash table.");
+	}
+	return TRUE;
+}
+
+static
+void destroy_stream_state_key(gpointer key)
+{
+	g_free((enum fs_writer_stream_state *) key);
+}
+
+static
+void check_completed_trace(gpointer key, gpointer value, gpointer user_data)
+{
+	enum fs_writer_stream_state *state = value;
+	int *trace_completed = user_data;
+
+	if (*state != FS_WRITER_COMPLETED_STREAM) {
+		*trace_completed = 0;
+	}
+}
+
+static
+void trace_is_static_listener(struct bt_ctf_trace *trace, void *data)
+{
+	struct fs_writer *fs_writer = data;
+	int trace_completed = 1;
+
+	fs_writer->trace_static = 1;
+
+	g_hash_table_foreach(fs_writer->stream_states,
+			check_completed_trace, &trace_completed);
+	if (trace_completed) {
+		writer_close(fs_writer->writer_component, fs_writer);
+		g_hash_table_remove(fs_writer->writer_component->trace_map,
+				fs_writer->trace);
+	}
+}
+
 static
 struct bt_ctf_stream_class *insert_new_stream_class(
 		struct writer_component *writer_component,
-		struct bt_ctf_writer *ctf_writer,
+		struct fs_writer *fs_writer,
 		struct bt_ctf_stream_class *stream_class)
 {
 	struct bt_ctf_stream_class *writer_stream_class = NULL;
 	struct bt_ctf_trace *trace = NULL, *writer_trace = NULL;
+	struct bt_ctf_writer *ctf_writer = fs_writer->writer;
 	enum bt_component_status ret;
 
 	trace = bt_ctf_stream_class_get_trace(stream_class);
-	if (!trace) {
-		fprintf(writer_component->err,
-				"[error] %s in %s:%d\n", __func__, __FILE__,
-				__LINE__);
-		goto error;
-	}
+	assert(trace);
 
 	writer_trace = bt_ctf_writer_get_trace(ctf_writer);
-	if (!writer_trace) {
-		fprintf(writer_component->err,
-				"[error] %s in %s:%d\n", __func__, __FILE__,
-				__LINE__);
-		goto error;
-	}
+	assert(writer_trace);
 
 	ret = ctf_copy_clock_classes(writer_component->err, writer_trace,
 			writer_stream_class, trace);
 	if (ret != BT_COMPONENT_STATUS_OK) {
-		fprintf(writer_component->err,
-				"[error] %s in %s:%d\n", __func__, __FILE__,
-				__LINE__);
+		BT_LOGE_STR("Failed to copy clock classes.");
 		goto error;
 	}
 
 	writer_stream_class = ctf_copy_stream_class(writer_component->err,
 			stream_class, writer_trace, true);
 	if (!writer_stream_class) {
-		fprintf(writer_component->err, "[error] Failed to copy stream class\n");
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+		BT_LOGE_STR("Failed to copy stream class.");
+		goto error;
+	}
+
+	ret = bt_ctf_trace_add_stream_class(writer_trace, writer_stream_class);
+	if (ret) {
+		BT_LOGE_STR("Failed to add stream_class.");
 		goto error;
 	}
 
-	g_hash_table_insert(writer_component->stream_class_map,
+	g_hash_table_insert(fs_writer->stream_class_map,
 			(gpointer) stream_class, writer_stream_class);
 
 	goto end;
@@ -98,188 +161,483 @@ end:
 }
 
 static
-struct bt_ctf_stream *insert_new_stream(
+enum fs_writer_stream_state *insert_new_stream_state(
 		struct writer_component *writer_component,
-		struct bt_ctf_writer *ctf_writer,
-		struct bt_ctf_stream_class *stream_class,
-		struct bt_ctf_stream *stream)
+		struct fs_writer *fs_writer, struct bt_ctf_stream *stream)
 {
-	struct bt_ctf_stream *writer_stream = NULL;
-	struct bt_ctf_stream_class *writer_stream_class = NULL;
+	enum fs_writer_stream_state *v = NULL;
 
-	writer_stream_class = g_hash_table_lookup(
-			writer_component->stream_class_map,
-			(gpointer) stream_class);
-	if (!writer_stream_class) {
-		writer_stream_class = insert_new_stream_class(
-				writer_component, ctf_writer, stream_class);
-		if (!writer_stream_class) {
-			fprintf(writer_component->err, "[error] %s in %s:%d\n",
-					__func__, __FILE__, __LINE__);
-			goto error;
+	v = g_new0(enum fs_writer_stream_state, 1);
+	if (!v) {
+		BT_LOGE_STR("Failed to allocate fs_writer_stream_state.");
+		goto end;
+	}
+	*v = FS_WRITER_UNKNOWN_STREAM;
+
+	g_hash_table_insert(fs_writer->stream_states, stream, v);
+end:
+	return v;
+}
+
+/*
+ * Make sure the output path is valid for a single trace: either it does
+ * not exists or it is empty.
+ *
+ * Return 0 if the path is valid, -1 otherwise.
+ */
+static
+bool valid_single_trace_path(const char *path)
+{
+	GError *error = NULL;
+	GDir *dir = NULL;
+	int ret = 0;
+
+	dir = g_dir_open(path, 0, &error);
+
+	/* Non-existent directory. */
+	if (!dir) {
+		/* For any other error, return an error */
+		if (error->code != G_FILE_ERROR_NOENT) {
+			ret = -1;
 		}
+		goto end;
 	}
-	bt_get(writer_stream_class);
 
-	writer_stream = bt_ctf_writer_create_stream(ctf_writer,
-			writer_stream_class);
-	if (!writer_stream) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+	/* g_dir_read_name skips "." and "..", error out on first result */
+	while (g_dir_read_name(dir) != NULL) {
+		ret = -1;
+		break;
+	}
+
+end:
+	if (dir) {
+		g_dir_close(dir);
+	}
+	if (error) {
+		g_error_free(error);
+	}
+
+	return ret;
+}
+
+static
+int make_trace_path(struct writer_component *writer_component,
+		struct bt_ctf_trace *trace, char *trace_path)
+{
+	int ret;
+	const char *trace_name;
+
+	if (writer_component->single_trace) {
+		trace_name = "\0";
+	} else {
+		trace_name = bt_ctf_trace_get_name(trace);
+		if (!trace_name) {
+			trace_name = writer_component->trace_name_base->str;
+		}
+	}
+
+	/* Sanitize the trace name. */
+	if (strlen(trace_name) == 2 && !strcmp(trace_name, "..")) {
+		BT_LOGE_STR("Trace name cannot be \"..\".");
 		goto error;
 	}
 
-	g_hash_table_insert(writer_component->stream_map, (gpointer) stream,
-			writer_stream);
+	if (strstr(trace_name, "../")) {
+		BT_LOGE_STR("Trace name cannot contain \"../\".");
+		goto error;
+
+	}
+
+	snprintf(trace_path, PATH_MAX, "%s/%s",
+			writer_component->base_path->str,
+			trace_name);
+	/*
+	 * Append a suffix if the trace_path exists and we are not in
+	 * single-trace mode.
+	 */
+	if (writer_component->single_trace) {
+		if (valid_single_trace_path(trace_path) != 0) {
+			BT_LOGE_STR("Invalid output directory.");
+			goto error;
+		}
+	} else {
+		if (g_file_test(trace_path, G_FILE_TEST_EXISTS)) {
+			int i = 0;
+
+			do {
+				snprintf(trace_path, PATH_MAX, "%s/%s-%d",
+						writer_component->base_path->str,
+						trace_name, ++i);
+			} while (g_file_test(trace_path, G_FILE_TEST_EXISTS) && i < INT_MAX);
+			if (i == INT_MAX) {
+				BT_LOGE_STR("Unable to find a unique trace path.");
+				goto error;
+			}
+		}
+	}
 
+	ret = 0;
 	goto end;
 
 error:
-	BT_PUT(writer_stream);
+	ret = -1;
 end:
-	bt_put(writer_stream_class);
-	return writer_stream;
-}
-
-static
-struct bt_ctf_stream *lookup_stream(struct writer_component *writer_component,
-		struct bt_ctf_stream *stream)
-{
-	return (struct bt_ctf_stream *) g_hash_table_lookup(
-			writer_component->stream_map,
-			(gpointer) stream);
+	return ret;
 }
 
 static
-struct bt_ctf_event_class *get_event_class(struct writer_component *writer_component,
-		struct bt_ctf_stream_class *writer_stream_class,
-		struct bt_ctf_event_class *event_class)
-{
-	return bt_ctf_stream_class_get_event_class_by_id(writer_stream_class,
-			bt_ctf_event_class_get_id(event_class));
-}
-
-struct bt_ctf_writer *insert_new_writer(
+struct fs_writer *insert_new_writer(
 		struct writer_component *writer_component,
 		struct bt_ctf_trace *trace)
 {
 	struct bt_ctf_writer *ctf_writer = NULL;
 	struct bt_ctf_trace *writer_trace = NULL;
-	char trace_name[PATH_MAX];
+	char trace_path[PATH_MAX];
 	enum bt_component_status ret;
+	struct bt_ctf_stream *stream = NULL;
+	struct fs_writer *fs_writer = NULL;
+	int nr_stream, i;
 
-	/* FIXME: replace with trace name when it will work. */
-	snprintf(trace_name, PATH_MAX, "%s/%s_%03d",
-			writer_component->base_path->str,
-			writer_component->trace_name_base->str,
-			writer_component->trace_id++);
-	printf_verbose("CTF-Writer creating trace in %s\n", trace_name);
+	if (writer_component->single_trace && writer_component->nr_traces > 0) {
+		BT_LOGE_STR("Trying to process more than one trace but single trace mode enabled.");
+		goto error;
+	}
 
-	ctf_writer = bt_ctf_writer_create(trace_name);
-	if (!ctf_writer) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+	ret = make_trace_path(writer_component, trace, trace_path);
+	if (ret) {
+		BT_LOGE_STR("Failed to make trace path.");
 		goto error;
 	}
 
-	writer_trace = bt_ctf_writer_get_trace(ctf_writer);
-	if (!writer_trace) {
-		fprintf(writer_component->err,
-				"[error] %s in %s:%d\n", __func__, __FILE__,
-				__LINE__);
+	printf("ctf.fs sink creating trace in %s\n", trace_path);
+
+	ctf_writer = bt_ctf_writer_create(trace_path);
+	if (!ctf_writer) {
+		BT_LOGE_STR("Failed to create CTF writer.");
 		goto error;
 	}
 
+	writer_trace = bt_ctf_writer_get_trace(ctf_writer);
+	assert(writer_trace);
+
 	ret = ctf_copy_trace(writer_component->err, trace, writer_trace);
 	if (ret != BT_COMPONENT_STATUS_OK) {
-		fprintf(writer_component->err, "[error] Failed to copy trace\n");
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+		BT_LOGE_STR("Failed to copy trace.");
 		BT_PUT(ctf_writer);
-		goto end;
+		goto error;
+	}
+
+	fs_writer = g_new0(struct fs_writer, 1);
+	if (!fs_writer) {
+		BT_LOGE_STR("Failed to allocate fs_writer.");
+		goto error;
 	}
+	fs_writer->writer = ctf_writer;
+	fs_writer->trace = trace;
+	fs_writer->writer_trace = writer_trace;
+	fs_writer->writer_component = writer_component;
 	BT_PUT(writer_trace);
+	fs_writer->stream_class_map = g_hash_table_new_full(g_direct_hash,
+			g_direct_equal, NULL, (GDestroyNotify) unref_stream_class);
+	fs_writer->stream_map = g_hash_table_new_full(g_direct_hash,
+			g_direct_equal, NULL, (GDestroyNotify) unref_stream);
+	fs_writer->stream_states = g_hash_table_new_full(g_direct_hash,
+			g_direct_equal, NULL, destroy_stream_state_key);
+
+	/* Set all the existing streams in the unknown state. */
+	nr_stream = bt_ctf_trace_get_stream_count(trace);
+	for (i = 0; i < nr_stream; i++) {
+		stream = bt_ctf_trace_get_stream_by_index(trace, i);
+		assert(stream);
+
+		insert_new_stream_state(writer_component, fs_writer, stream);
+		BT_PUT(stream);
+	}
 
+	/* Check if the trace is already static or register a listener. */
+	if (bt_ctf_trace_is_static(trace)) {
+		fs_writer->trace_static = 1;
+		fs_writer->static_listener_id = -1;
+	} else {
+		ret = bt_ctf_trace_add_is_static_listener(trace,
+				trace_is_static_listener, fs_writer);
+		assert(ret >= 0);
+		fs_writer->static_listener_id = ret;
+	}
+
+	writer_component->nr_traces++;
 	g_hash_table_insert(writer_component->trace_map, (gpointer) trace,
-			ctf_writer);
+			fs_writer);
 
 	goto end;
 
 error:
+	g_free(fs_writer);
+	fs_writer = NULL;
 	bt_put(writer_trace);
+	bt_put(stream);
 	BT_PUT(ctf_writer);
 end:
-	return ctf_writer;
+	return fs_writer;
 }
 
 static
-struct bt_ctf_writer *get_writer(struct writer_component *writer_component,
+struct fs_writer *get_fs_writer(struct writer_component *writer_component,
 		struct bt_ctf_stream_class *stream_class)
 {
 	struct bt_ctf_trace *trace = NULL;
-	struct bt_ctf_writer *ctf_writer = NULL;
+	struct fs_writer *fs_writer;
 
 	trace = bt_ctf_stream_class_get_trace(stream_class);
-	if (!trace) {
-		ctf_writer = NULL;
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
-		goto error;
-	}
+	assert(trace);
 
-	ctf_writer = g_hash_table_lookup(writer_component->trace_map,
+	fs_writer = g_hash_table_lookup(writer_component->trace_map,
 			(gpointer) trace);
-	if (!ctf_writer) {
-		ctf_writer = insert_new_writer(writer_component, trace);
+	if (!fs_writer) {
+		fs_writer = insert_new_writer(writer_component, trace);
 	}
-	bt_get(ctf_writer);
 	BT_PUT(trace);
+
+	return fs_writer;
+}
+
+static
+struct fs_writer *get_fs_writer_from_stream(
+		struct writer_component *writer_component,
+		struct bt_ctf_stream *stream)
+{
+	struct bt_ctf_stream_class *stream_class = NULL;
+	struct fs_writer *fs_writer;
+
+	stream_class = bt_ctf_stream_get_class(stream);
+	assert(stream_class);
+
+	fs_writer = get_fs_writer(writer_component, stream_class);
+
+	bt_put(stream_class);
+	return fs_writer;
+}
+
+static
+struct bt_ctf_stream_class *lookup_stream_class(
+		struct writer_component *writer_component,
+		struct bt_ctf_stream_class *stream_class)
+{
+	struct fs_writer *fs_writer = get_fs_writer(
+			writer_component, stream_class);
+	assert(fs_writer);
+	return (struct bt_ctf_stream_class *) g_hash_table_lookup(
+			fs_writer->stream_class_map, (gpointer) stream_class);
+}
+
+static
+struct bt_ctf_stream *lookup_stream(struct writer_component *writer_component,
+		struct bt_ctf_stream *stream)
+{
+	struct fs_writer *fs_writer = get_fs_writer_from_stream(
+			writer_component, stream);
+	assert(fs_writer);
+	return (struct bt_ctf_stream *) g_hash_table_lookup(
+			fs_writer->stream_map, (gpointer) stream);
+}
+
+static
+struct bt_ctf_stream *insert_new_stream(
+		struct writer_component *writer_component,
+		struct fs_writer *fs_writer,
+		struct bt_ctf_stream_class *stream_class,
+		struct bt_ctf_stream *stream)
+{
+	struct bt_ctf_stream *writer_stream = NULL;
+	struct bt_ctf_stream_class *writer_stream_class = NULL;
+	struct bt_ctf_writer *ctf_writer = bt_get(fs_writer->writer);
+
+	writer_stream_class = lookup_stream_class(writer_component,
+			stream_class);
+	if (!writer_stream_class) {
+		writer_stream_class = insert_new_stream_class(
+				writer_component, fs_writer, stream_class);
+		if (!writer_stream_class) {
+			BT_LOGE_STR("Failed to insert a new stream_class.");
+			goto error;
+		}
+	}
+	bt_get(writer_stream_class);
+
+	writer_stream = bt_ctf_stream_create(writer_stream_class,
+		bt_ctf_stream_get_name(stream));
+	assert(writer_stream);
+
+	g_hash_table_insert(fs_writer->stream_map, (gpointer) stream,
+			writer_stream);
+
 	goto end;
 
 error:
-	BT_PUT(ctf_writer);
+	BT_PUT(writer_stream);
 end:
-	return ctf_writer;
+	bt_put(ctf_writer);
+	bt_put(writer_stream_class);
+	return writer_stream;
+}
+
+static
+struct bt_ctf_event_class *get_event_class(struct writer_component *writer_component,
+		struct bt_ctf_stream_class *writer_stream_class,
+		struct bt_ctf_event_class *event_class)
+{
+	return bt_ctf_stream_class_get_event_class_by_id(writer_stream_class,
+			bt_ctf_event_class_get_id(event_class));
 }
 
 static
 struct bt_ctf_stream *get_writer_stream(
 		struct writer_component *writer_component,
 		struct bt_ctf_packet *packet, struct bt_ctf_stream *stream)
+{
+	struct bt_ctf_stream *writer_stream = NULL;
+
+	writer_stream = lookup_stream(writer_component, stream);
+	if (!writer_stream) {
+		BT_LOGE_STR("Failed to find existing stream.");
+		goto error;
+	}
+	bt_get(writer_stream);
+
+	goto end;
+
+error:
+	BT_PUT(writer_stream);
+end:
+	return writer_stream;
+}
+
+BT_HIDDEN
+void writer_close(struct writer_component *writer_component,
+		struct fs_writer *fs_writer)
+{
+	if (fs_writer->static_listener_id >= 0) {
+		bt_ctf_trace_remove_is_static_listener(fs_writer->trace,
+				fs_writer->static_listener_id);
+	}
+
+	/* Empty the stream class HT. */
+	g_hash_table_foreach_remove(fs_writer->stream_class_map,
+			empty_ht, NULL);
+	g_hash_table_destroy(fs_writer->stream_class_map);
+
+	/* Empty the stream HT. */
+	g_hash_table_foreach_remove(fs_writer->stream_map,
+			empty_streams_ht, NULL);
+	g_hash_table_destroy(fs_writer->stream_map);
+
+	/* Empty the stream state HT. */
+	g_hash_table_foreach_remove(fs_writer->stream_states,
+			empty_ht, NULL);
+	g_hash_table_destroy(fs_writer->stream_states);
+}
+
+BT_HIDDEN
+enum bt_component_status writer_stream_begin(
+		struct writer_component *writer_component,
+		struct bt_ctf_stream *stream)
 {
 	struct bt_ctf_stream_class *stream_class = NULL;
-	struct bt_ctf_writer *ctf_writer = NULL;
+	struct fs_writer *fs_writer;
 	struct bt_ctf_stream *writer_stream = NULL;
+	enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
+	enum fs_writer_stream_state *state;
 
 	stream_class = bt_ctf_stream_get_class(stream);
-	if (!stream_class) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+	assert(stream_class);
+
+	fs_writer = get_fs_writer(writer_component, stream_class);
+	if (!fs_writer) {
+		BT_LOGE_STR("Failed to get fs_writer.");
 		goto error;
 	}
 
-	ctf_writer = get_writer(writer_component, stream_class);
-	if (!ctf_writer) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+	/* Set the stream as active */
+	state = g_hash_table_lookup(fs_writer->stream_states, stream);
+	if (!state) {
+		if (fs_writer->trace_static) {
+			BT_LOGE_STR("Cannot add new stream on a static trace.");
+			goto error;
+		}
+		state = insert_new_stream_state(writer_component, fs_writer,
+				stream);
+	}
+	if (*state != FS_WRITER_UNKNOWN_STREAM) {
+		BT_LOGE("Unexpected stream state: state=%d", *state);
 		goto error;
 	}
+	*state = FS_WRITER_ACTIVE_STREAM;
 
-	writer_stream = lookup_stream(writer_component, stream);
+	writer_stream = insert_new_stream(writer_component, fs_writer,
+			stream_class, stream);
 	if (!writer_stream) {
-		writer_stream = insert_new_stream(writer_component, ctf_writer,
-				stream_class, stream);
+		BT_LOGE_STR("Failed to insert new stream.");
+		goto error;
 	}
-	bt_get(writer_stream);
 
 	goto end;
 
 error:
-	BT_PUT(writer_stream);
+	ret = BT_COMPONENT_STATUS_ERROR;
 end:
-	bt_put(ctf_writer);
 	bt_put(stream_class);
-	return writer_stream;
+	return ret;
+}
+
+BT_HIDDEN
+enum bt_component_status writer_stream_end(
+		struct writer_component *writer_component,
+		struct bt_ctf_stream *stream)
+{
+	struct bt_ctf_stream_class *stream_class = NULL;
+	struct fs_writer *fs_writer;
+	struct bt_ctf_trace *trace = NULL;
+	enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
+	enum fs_writer_stream_state *state;
+
+	stream_class = bt_ctf_stream_get_class(stream);
+	assert(stream_class);
+
+	fs_writer = get_fs_writer(writer_component, stream_class);
+	if (!fs_writer) {
+		BT_LOGE_STR("Failed to get fs_writer.");
+		goto error;
+	}
+
+	state = g_hash_table_lookup(fs_writer->stream_states, stream);
+	if (*state != FS_WRITER_ACTIVE_STREAM) {
+		BT_LOGE("Unexpected stream state: state=%d", *state);
+		goto error;
+	}
+	*state = FS_WRITER_COMPLETED_STREAM;
+
+	g_hash_table_remove(fs_writer->stream_map, stream);
+
+	if (fs_writer->trace_static) {
+		int trace_completed = 1;
+
+		g_hash_table_foreach(fs_writer->stream_states,
+				check_completed_trace, &trace_completed);
+		if (trace_completed) {
+			writer_close(writer_component, fs_writer);
+			g_hash_table_remove(writer_component->trace_map,
+					fs_writer->trace);
+		}
+	}
+
+	goto end;
+
+error:
+	ret = BT_COMPONENT_STATUS_ERROR;
+end:
+	BT_PUT(trace);
+	BT_PUT(stream_class);
+	return ret;
 }
 
 BT_HIDDEN
@@ -288,42 +646,32 @@ enum bt_component_status writer_new_packet(
 		struct bt_ctf_packet *packet)
 {
 	struct bt_ctf_stream *stream = NULL, *writer_stream = NULL;
-	struct bt_ctf_field *writer_packet_context = NULL;
 	enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
 	int int_ret;
 
 	stream = bt_ctf_packet_get_stream(packet);
-	if (!stream) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
-		goto error;
-	}
+	assert(stream);
 
 	writer_stream = get_writer_stream(writer_component, packet, stream);
 	if (!writer_stream) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+		BT_LOGE_STR("Failed to get writer_stream.");
 		goto error;
 	}
 	BT_PUT(stream);
 
-	writer_packet_context = ctf_copy_packet_context(writer_component->err,
-			packet, writer_stream);
-	if (!writer_packet_context) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+	int_ret = ctf_stream_copy_packet_context(
+			writer_component->err, packet, writer_stream);
+	if (int_ret < 0) {
+		BT_LOGE_STR("Failed to copy packet_context.");
 		goto error;
 	}
 
-	int_ret = bt_ctf_stream_set_packet_context(writer_stream,
-			writer_packet_context);
-	if (int_ret < 0) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
+	ret = ctf_stream_copy_packet_header(writer_component->err,
+			packet, writer_stream);
+	if (ret != 0) {
+		BT_LOGE_STR("Failed to copy packet_header.");
 		goto error;
 	}
-	BT_PUT(writer_stream);
-	BT_PUT(writer_packet_context);
 
 	goto end;
 
@@ -331,7 +679,6 @@ error:
 	ret = BT_COMPONENT_STATUS_ERROR;
 end:
 	bt_put(writer_stream);
-	bt_put(writer_packet_context);
 	bt_put(stream);
 	return ret;
 }
@@ -345,16 +692,11 @@ enum bt_component_status writer_close_packet(
 	enum bt_component_status ret;
 
 	stream = bt_ctf_packet_get_stream(packet);
-	if (!stream) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
-		goto error;
-	}
+	assert(stream);
 
 	writer_stream = lookup_stream(writer_component, stream);
 	if (!writer_stream) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n",
-				__func__, __FILE__, __LINE__);
+		BT_LOGE_STR("Failed to find existing stream.");
 		goto error;
 	}
 	BT_PUT(stream);
@@ -362,11 +704,11 @@ enum bt_component_status writer_close_packet(
 	bt_get(writer_stream);
 
 	ret = bt_ctf_stream_flush(writer_stream);
-	if (ret < 0) {
-		fprintf(writer_component->err,
-				"[error] Failed to flush packet\n");
+	if (ret) {
+		BT_LOGE_STR("Failed to flush stream.");
 		goto error;
 	}
+
 	BT_PUT(writer_stream);
 
 	ret = BT_COMPONENT_STATUS_OK;
@@ -390,50 +732,26 @@ enum bt_component_status writer_output_event(
 	struct bt_ctf_stream *stream = NULL, *writer_stream = NULL;
 	struct bt_ctf_stream_class *stream_class = NULL, *writer_stream_class = NULL;
 	struct bt_ctf_event *writer_event = NULL;
-	const char *event_name;
 	int int_ret;
 
 	event_class = bt_ctf_event_get_class(event);
-	if (!event_class) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
-		goto error;
-	}
-
-	event_name = bt_ctf_event_class_get_name(event_class);
-	if (!event_name) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
-		goto error;
-	}
+	assert(event_class);
 
 	stream = bt_ctf_event_get_stream(event);
-	if (!stream) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
-		goto error;
-	}
+	assert(stream);
 
 	writer_stream = lookup_stream(writer_component, stream);
 	if (!writer_stream || !bt_get(writer_stream)) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
+		BT_LOGE_STR("Failed for find existing stream.");
 		goto error;
 	}
 
 	stream_class = bt_ctf_event_class_get_stream_class(event_class);
-	if (!stream_class) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
-		goto error;
-	}
+	assert(stream_class);
 
-	writer_stream_class = g_hash_table_lookup(
-			writer_component->stream_class_map,
-			(gpointer) stream_class);
+	writer_stream_class = lookup_stream_class(writer_component, stream_class);
 	if (!writer_stream_class || !bt_get(writer_stream_class)) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
+		BT_LOGE_STR("Failed to find existing stream_class.");
 		goto error;
 	}
 
@@ -443,15 +761,14 @@ enum bt_component_status writer_output_event(
 		writer_event_class = ctf_copy_event_class(writer_component->err,
 				event_class);
 		if (!writer_event_class) {
-			fprintf(writer_component->err, "[error] %s in %s:%d\n",
-					__func__, __FILE__, __LINE__);
+			BT_LOGE_STR("Failed to copy event_class.");
 			goto error;
 		}
 		int_ret = bt_ctf_stream_class_add_event_class(
 				writer_stream_class, writer_event_class);
 		if (int_ret) {
-			fprintf(writer_component->err, "[error] %s in %s:%d\n",
-					__func__, __FILE__, __LINE__);
+			BT_LOGE("Failed to add event_class: event_name=\"%s\"",
+					bt_ctf_event_class_get_name(event_class));
 			goto error;
 		}
 	}
@@ -459,18 +776,14 @@ enum bt_component_status writer_output_event(
 	writer_event = ctf_copy_event(writer_component->err, event,
 			writer_event_class, true);
 	if (!writer_event) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
-		fprintf(writer_component->err, "[error] Failed to copy event %s\n",
+		BT_LOGE("Failed to copy event: event_class=\"%s\"",
 				bt_ctf_event_class_get_name(writer_event_class));
 		goto error;
 	}
 
 	int_ret = bt_ctf_stream_append_event(writer_stream, writer_event);
 	if (int_ret < 0) {
-		fprintf(writer_component->err, "[error] %s in %s:%d\n", __func__,
-				__FILE__, __LINE__);
-		fprintf(writer_component->err, "[error] Failed to append event %s\n",
+		BT_LOGE("Failed to append event: event_class=\"%s\"",
 				bt_ctf_event_class_get_name(writer_event_class));
 		goto error;
 	}