ctf: compile plugin as C++
[babeltrace.git] / src / plugins / ctf / fs-sink / fs-sink.cpp
diff --git a/src/plugins/ctf/fs-sink/fs-sink.cpp b/src/plugins/ctf/fs-sink/fs-sink.cpp
new file mode 100644 (file)
index 0000000..42a616c
--- /dev/null
@@ -0,0 +1,1147 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright 2019 Philippe Proulx <pproulx@efficios.com>
+ */
+
+#define BT_COMP_LOG_SELF_COMP (fs_sink->self_comp)
+#define BT_LOG_OUTPUT_LEVEL (fs_sink->log_level)
+#define BT_LOG_TAG "PLUGIN/SINK.CTF.FS"
+#include "logging/comp-logging.h"
+
+#include <babeltrace2/babeltrace.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <glib.h>
+#include "common/assert.h"
+#include "ctfser/ctfser.h"
+#include "plugins/common/param-validation/param-validation.h"
+
+#include "fs-sink.hpp"
+#include "fs-sink-trace.hpp"
+#include "fs-sink-stream.hpp"
+#include "fs-sink-ctf-meta.hpp"
+#include "translate-trace-ir-to-ctf-ir.hpp"
+#include "translate-ctf-ir-to-tsdl.hpp"
+
+static
+const char * const in_port_name = "in";
+
+static
+bt_component_class_initialize_method_status ensure_output_dir_exists(
+               struct fs_sink_comp *fs_sink)
+{
+       bt_component_class_initialize_method_status status =
+               BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_OK;
+       int ret;
+
+       ret = g_mkdir_with_parents(fs_sink->output_dir_path->str, 0755);
+       if (ret) {
+               BT_COMP_LOGE_APPEND_CAUSE_ERRNO(fs_sink->self_comp,
+                       "Cannot create directories for output directory",
+                       ": output-dir-path=\"%s\"",
+                       fs_sink->output_dir_path->str);
+               status = BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+end:
+       return status;
+}
+
+static bt_param_validation_map_value_entry_descr fs_sink_params_descr[] = {
+       { "path", BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_MANDATORY,
+               { bt_param_validation_value_descr::string_t } },
+       { "assume-single-trace", BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_OPTIONAL,
+               { bt_param_validation_value_descr::bool_t } },
+       { "ignore-discarded-events", BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_OPTIONAL,
+               { bt_param_validation_value_descr::bool_t } },
+       { "ignore-discarded-packets", BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_OPTIONAL,
+               { bt_param_validation_value_descr::bool_t } },
+       { "quiet", BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_OPTIONAL,
+               { bt_param_validation_value_descr::bool_t } },
+       BT_PARAM_VALIDATION_MAP_VALUE_ENTRY_END
+};
+
+static
+bt_component_class_initialize_method_status
+configure_component(struct fs_sink_comp *fs_sink, const bt_value *params)
+{
+       bt_component_class_initialize_method_status status;
+       const bt_value *value;
+       enum bt_param_validation_status validation_status;
+       gchar *validation_error;
+
+       validation_status = bt_param_validation_validate(params,
+               fs_sink_params_descr, &validation_error);
+       if (validation_status == BT_PARAM_VALIDATION_STATUS_VALIDATION_ERROR) {
+               status = BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_ERROR;
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "%s", validation_error);
+               goto end;
+       } else if (validation_status == BT_PARAM_VALIDATION_STATUS_MEMORY_ERROR) {
+               status = BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_MEMORY_ERROR;
+               goto end;
+       }
+
+       value = bt_value_map_borrow_entry_value_const(params, "path");
+       g_string_assign(fs_sink->output_dir_path,
+               bt_value_string_get(value));
+
+       value = bt_value_map_borrow_entry_value_const(params,
+               "assume-single-trace");
+       if (value) {
+               fs_sink->assume_single_trace = (bool) bt_value_bool_get(value);
+       }
+
+       value = bt_value_map_borrow_entry_value_const(params,
+               "ignore-discarded-events");
+       if (value) {
+               fs_sink->ignore_discarded_events =
+                       (bool) bt_value_bool_get(value);
+       }
+
+       value = bt_value_map_borrow_entry_value_const(params,
+               "ignore-discarded-packets");
+       if (value) {
+               fs_sink->ignore_discarded_packets =
+                       (bool) bt_value_bool_get(value);
+       }
+
+       value = bt_value_map_borrow_entry_value_const(params,
+               "quiet");
+       if (value) {
+               fs_sink->quiet = (bool) bt_value_bool_get(value);
+       }
+
+       status = BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_OK;
+
+end:
+       g_free(validation_error);
+       return status;
+}
+
+static
+void destroy_fs_sink_comp(struct fs_sink_comp *fs_sink)
+{
+       if (!fs_sink) {
+               goto end;
+       }
+
+       if (fs_sink->output_dir_path) {
+               g_string_free(fs_sink->output_dir_path, TRUE);
+               fs_sink->output_dir_path = NULL;
+       }
+
+       if (fs_sink->traces) {
+               g_hash_table_destroy(fs_sink->traces);
+               fs_sink->traces = NULL;
+       }
+
+       BT_MESSAGE_ITERATOR_PUT_REF_AND_RESET(
+               fs_sink->upstream_iter);
+       g_free(fs_sink);
+
+end:
+       return;
+}
+
+BT_HIDDEN
+bt_component_class_initialize_method_status ctf_fs_sink_init(
+               bt_self_component_sink *self_comp_sink,
+               bt_self_component_sink_configuration *config,
+               const bt_value *params,
+               void *init_method_data)
+{
+       bt_component_class_initialize_method_status status;
+       bt_self_component_add_port_status add_port_status;
+       struct fs_sink_comp *fs_sink = NULL;
+       bt_self_component *self_comp =
+               bt_self_component_sink_as_self_component(self_comp_sink);
+       bt_logging_level log_level = bt_component_get_logging_level(
+               bt_self_component_as_component(self_comp));
+
+       fs_sink = g_new0(struct fs_sink_comp, 1);
+       if (!fs_sink) {
+               BT_COMP_LOG_CUR_LVL(BT_LOG_ERROR, log_level, self_comp,
+                       "Failed to allocate one CTF FS sink structure.");
+               BT_CURRENT_THREAD_ERROR_APPEND_CAUSE_FROM_COMPONENT(
+                       self_comp, "Failed to allocate one CTF FS sink structure.");
+               status = BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_MEMORY_ERROR;
+               goto end;
+       }
+
+       fs_sink->log_level = log_level;
+       fs_sink->self_comp = self_comp;
+       fs_sink->output_dir_path = g_string_new(NULL);
+       status = configure_component(fs_sink, params);
+       if (status != BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_OK) {
+               /* configure_component() logs errors */
+               goto end;
+       }
+
+       if (fs_sink->assume_single_trace &&
+                       g_file_test(fs_sink->output_dir_path->str,
+                               G_FILE_TEST_EXISTS)) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp,
+                       "Single trace mode, but output path exists: output-path=\"%s\"",
+                       fs_sink->output_dir_path->str);
+               status = BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       status = ensure_output_dir_exists(fs_sink);
+       if (status != BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_OK) {
+               /* ensure_output_dir_exists() logs errors */
+               goto end;
+       }
+
+       fs_sink->traces = g_hash_table_new_full(g_direct_hash, g_direct_equal,
+               NULL, (GDestroyNotify) fs_sink_trace_destroy);
+       if (!fs_sink->traces) {
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Failed to allocate one GHashTable.");
+               status = BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_MEMORY_ERROR;
+               goto end;
+       }
+
+       add_port_status = bt_self_component_sink_add_input_port(
+               self_comp_sink, in_port_name, NULL, NULL);
+       if (add_port_status != BT_SELF_COMPONENT_ADD_PORT_STATUS_OK) {
+               status = (bt_component_class_initialize_method_status) add_port_status;
+               BT_COMP_LOGE_APPEND_CAUSE(self_comp, "Failed to add input port.");
+               goto end;
+       }
+
+       bt_self_component_set_data(self_comp, fs_sink);
+
+end:
+       if (status != BT_COMPONENT_CLASS_INITIALIZE_METHOD_STATUS_OK) {
+               destroy_fs_sink_comp(fs_sink);
+       }
+
+       return status;
+}
+
+static inline
+struct fs_sink_stream *borrow_stream(struct fs_sink_comp *fs_sink,
+               const bt_stream *ir_stream)
+{
+       const bt_trace *ir_trace = bt_stream_borrow_trace_const(ir_stream);
+       struct fs_sink_trace *trace;
+       struct fs_sink_stream *stream = NULL;
+
+       trace = (fs_sink_trace *) g_hash_table_lookup(fs_sink->traces, ir_trace);
+       if (G_UNLIKELY(!trace)) {
+               if (fs_sink->assume_single_trace &&
+                               g_hash_table_size(fs_sink->traces) > 0) {
+                       BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                               "Single trace mode, but getting more than one trace: "
+                               "stream-name=\"%s\"",
+                               bt_stream_get_name(ir_stream));
+                       goto end;
+               }
+
+               trace = fs_sink_trace_create(fs_sink, ir_trace);
+               if (!trace) {
+                       goto end;
+               }
+       }
+
+       stream = (fs_sink_stream *) g_hash_table_lookup(trace->streams, ir_stream);
+       if (G_UNLIKELY(!stream)) {
+               stream = fs_sink_stream_create(trace, ir_stream);
+               if (!stream) {
+                       goto end;
+               }
+       }
+
+end:
+       return stream;
+}
+
+static inline
+bt_component_class_sink_consume_method_status handle_event_msg(
+               struct fs_sink_comp *fs_sink, const bt_message *msg)
+{
+       int ret;
+       bt_component_class_sink_consume_method_status status =
+               BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
+       const bt_event *ir_event = bt_message_event_borrow_event_const(msg);
+       const bt_stream *ir_stream = bt_event_borrow_stream_const(ir_event);
+       struct fs_sink_stream *stream;
+       struct fs_sink_ctf_event_class *ec = NULL;
+       const bt_clock_snapshot *cs = NULL;
+
+       stream = borrow_stream(fs_sink, ir_stream);
+       if (G_UNLIKELY(!stream)) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to borrow stream.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       ret = try_translate_event_class_trace_ir_to_ctf_ir(fs_sink,
+               stream->sc, bt_event_borrow_class_const(ir_event), &ec);
+       if (ret) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to translate event class to CTF IR.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       BT_ASSERT_DBG(ec);
+
+       if (stream->sc->default_clock_class) {
+               cs = bt_message_event_borrow_default_clock_snapshot_const(
+                       msg);
+       }
+
+       /*
+        * If this event's stream does not support packets, then we
+        * lazily create artificial packets.
+        *
+        * The size of an artificial packet is arbitrarily at least
+        * 4 MiB (it usually is greater because we close it when
+        * comes the time to write a new event and the packet's content
+        * size is >= 4 MiB), except the last one which can be smaller.
+        */
+       if (G_UNLIKELY(!stream->sc->has_packets)) {
+               if (stream->packet_state.is_open &&
+                               bt_ctfser_get_offset_in_current_packet_bits(&stream->ctfser) / 8 >=
+                               4 * 1024 * 1024) {
+                       /*
+                        * Stream's current packet is larger than 4 MiB:
+                        * close it. A new packet will be opened just
+                        * below.
+                        */
+                       ret = fs_sink_stream_close_packet(stream, NULL);
+                       if (ret) {
+                               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                                       "Failed to close packet.");
+                               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                               goto end;
+                       }
+               }
+
+               if (!stream->packet_state.is_open) {
+                       /* Stream's packet is not currently opened: open it */
+                       ret = fs_sink_stream_open_packet(stream, NULL, NULL);
+                       if (ret) {
+                               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                                       "Failed to open packet.");
+                               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                               goto end;
+                       }
+               }
+       }
+
+       BT_ASSERT_DBG(stream->packet_state.is_open);
+       ret = fs_sink_stream_write_event(stream, cs, ir_event, ec);
+       if (G_UNLIKELY(ret)) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to write event.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+end:
+       return status;
+}
+
+static inline
+bt_component_class_sink_consume_method_status handle_packet_beginning_msg(
+               struct fs_sink_comp *fs_sink, const bt_message *msg)
+{
+       int ret;
+       bt_component_class_sink_consume_method_status status =
+               BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
+       const bt_packet *ir_packet =
+               bt_message_packet_beginning_borrow_packet_const(msg);
+       const bt_stream *ir_stream = bt_packet_borrow_stream_const(ir_packet);
+       struct fs_sink_stream *stream;
+       const bt_clock_snapshot *cs = NULL;
+
+       stream = borrow_stream(fs_sink, ir_stream);
+       if (G_UNLIKELY(!stream)) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to borrow stream.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       if (stream->sc->packets_have_ts_begin) {
+               cs = bt_message_packet_beginning_borrow_default_clock_snapshot_const(
+                       msg);
+               BT_ASSERT(cs);
+       }
+
+       /*
+        * If we previously received a discarded events message with
+        * a time range, make sure that its beginning time matches what's
+        * expected for CTF 1.8, that is:
+        *
+        * * Its beginning time is the previous packet's end
+        *   time (or the current packet's beginning time if
+        *   this is the first packet).
+        *
+        * We check this here instead of in handle_packet_end_msg()
+        * because we want to catch any incompatible message as early as
+        * possible to report the error.
+        *
+        * Validation of the discarded events message's end time is
+        * performed in handle_packet_end_msg().
+        */
+       if (stream->discarded_events_state.in_range) {
+               uint64_t expected_cs;
+
+               /*
+                * `stream->discarded_events_state.in_range` is only set
+                * when the stream class's discarded events have a time
+                * range.
+                *
+                * It is required that the packet beginning and end
+                * messages for this stream class have times when
+                * discarded events have a time range.
+                */
+               BT_ASSERT(stream->sc->discarded_events_has_ts);
+               BT_ASSERT(stream->sc->packets_have_ts_begin);
+               BT_ASSERT(stream->sc->packets_have_ts_end);
+
+               if (stream->prev_packet_state.end_cs == UINT64_C(-1)) {
+                       /* We're opening the first packet */
+                       expected_cs = bt_clock_snapshot_get_value(cs);
+               } else {
+                       expected_cs = stream->prev_packet_state.end_cs;
+               }
+
+               if (stream->discarded_events_state.beginning_cs !=
+                               expected_cs) {
+                       BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                               "Incompatible discarded events message: "
+                               "unexpected beginning time: "
+                               "beginning-cs-val=%" PRIu64 ", "
+                               "expected-beginning-cs-val=%" PRIu64 ", "
+                               "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                               "trace-name=\"%s\", path=\"%s/%s\"",
+                               stream->discarded_events_state.beginning_cs,
+                               expected_cs,
+                               bt_stream_get_id(ir_stream),
+                               bt_stream_get_name(ir_stream),
+                               bt_trace_get_name(
+                                       bt_stream_borrow_trace_const(ir_stream)),
+                               stream->trace->path->str, stream->file_name->str);
+                       status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                       goto end;
+               }
+       }
+
+       /*
+        * If we previously received a discarded packets message with a
+        * time range, make sure that its beginning and end times match
+        * what's expected for CTF 1.8, that is:
+        *
+        * * Its beginning time is the previous packet's end time.
+        *
+        * * Its end time is the current packet's beginning time.
+        */
+       if (stream->discarded_packets_state.in_range) {
+               uint64_t expected_end_cs;
+
+               /*
+                * `stream->discarded_packets_state.in_range` is only
+                * set when the stream class's discarded packets have a
+                * time range.
+                *
+                * It is required that the packet beginning and end
+                * messages for this stream class have times when
+                * discarded packets have a time range.
+                */
+               BT_ASSERT(stream->sc->discarded_packets_has_ts);
+               BT_ASSERT(stream->sc->packets_have_ts_begin);
+               BT_ASSERT(stream->sc->packets_have_ts_end);
+
+               /*
+                * It is not supported to have a discarded packets
+                * message _before_ the first packet: we cannot validate
+                * that its beginning time is compatible with CTF 1.8 in
+                * this case.
+                */
+               if (stream->prev_packet_state.end_cs == UINT64_C(-1)) {
+                       BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                               "Incompatible discarded packets message "
+                               "occurring before the stream's first packet: "
+                               "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                               "trace-name=\"%s\", path=\"%s/%s\"",
+                               bt_stream_get_id(ir_stream),
+                               bt_stream_get_name(ir_stream),
+                               bt_trace_get_name(
+                                       bt_stream_borrow_trace_const(ir_stream)),
+                               stream->trace->path->str, stream->file_name->str);
+                       status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                       goto end;
+               }
+
+               if (stream->discarded_packets_state.beginning_cs !=
+                               stream->prev_packet_state.end_cs) {
+                       BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                               "Incompatible discarded packets message: "
+                               "unexpected beginning time: "
+                               "beginning-cs-val=%" PRIu64 ", "
+                               "expected-beginning-cs-val=%" PRIu64 ", "
+                               "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                               "trace-name=\"%s\", path=\"%s/%s\"",
+                               stream->discarded_packets_state.beginning_cs,
+                               stream->prev_packet_state.end_cs,
+                               bt_stream_get_id(ir_stream),
+                               bt_stream_get_name(ir_stream),
+                               bt_trace_get_name(
+                                       bt_stream_borrow_trace_const(ir_stream)),
+                               stream->trace->path->str, stream->file_name->str);
+                       status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                       goto end;
+               }
+
+               expected_end_cs = bt_clock_snapshot_get_value(cs);
+
+               if (stream->discarded_packets_state.end_cs !=
+                               expected_end_cs) {
+                       BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                               "Incompatible discarded packets message: "
+                               "unexpected end time: "
+                               "end-cs-val=%" PRIu64 ", "
+                               "expected-end-cs-val=%" PRIu64 ", "
+                               "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                               "trace-name=\"%s\", path=\"%s/%s\"",
+                               stream->discarded_packets_state.end_cs,
+                               expected_end_cs,
+                               bt_stream_get_id(ir_stream),
+                               bt_stream_get_name(ir_stream),
+                               bt_trace_get_name(
+                                       bt_stream_borrow_trace_const(ir_stream)),
+                               stream->trace->path->str, stream->file_name->str);
+                       status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                       goto end;
+               }
+       }
+
+       /*
+        * We're not in a discarded packets time range anymore since we
+        * require that the discarded packets time ranges go from one
+        * packet's end time to the next packet's beginning time, and
+        * we're handling a packet beginning message here.
+        */
+       stream->discarded_packets_state.in_range = false;
+
+       ret = fs_sink_stream_open_packet(stream, cs, ir_packet);
+       if (ret) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to open packet.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+end:
+       return status;
+}
+
+static inline
+bt_component_class_sink_consume_method_status handle_packet_end_msg(
+               struct fs_sink_comp *fs_sink, const bt_message *msg)
+{
+       int ret;
+       bt_component_class_sink_consume_method_status status =
+               BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
+       const bt_packet *ir_packet =
+               bt_message_packet_end_borrow_packet_const(msg);
+       const bt_stream *ir_stream = bt_packet_borrow_stream_const(ir_packet);
+       struct fs_sink_stream *stream;
+       const bt_clock_snapshot *cs = NULL;
+
+       stream = borrow_stream(fs_sink, ir_stream);
+       if (G_UNLIKELY(!stream)) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to borrow stream.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       if (stream->sc->packets_have_ts_end) {
+               cs = bt_message_packet_end_borrow_default_clock_snapshot_const(
+                       msg);
+               BT_ASSERT(cs);
+       }
+
+       /*
+        * If we previously received a discarded events message with
+        * a time range, make sure that its end time matches what's
+        * expected for CTF 1.8, that is:
+        *
+        * * Its end time is the current packet's end time.
+        *
+        * Validation of the discarded events message's beginning time
+        * is performed in handle_packet_beginning_msg().
+        */
+       if (stream->discarded_events_state.in_range) {
+               uint64_t expected_cs;
+
+               /*
+                * `stream->discarded_events_state.in_range` is only set
+                * when the stream class's discarded events have a time
+                * range.
+                *
+                * It is required that the packet beginning and end
+                * messages for this stream class have times when
+                * discarded events have a time range.
+                */
+               BT_ASSERT(stream->sc->discarded_events_has_ts);
+               BT_ASSERT(stream->sc->packets_have_ts_begin);
+               BT_ASSERT(stream->sc->packets_have_ts_end);
+
+               expected_cs = bt_clock_snapshot_get_value(cs);
+
+               if (stream->discarded_events_state.end_cs != expected_cs) {
+                       BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                               "Incompatible discarded events message: "
+                               "unexpected end time: "
+                               "end-cs-val=%" PRIu64 ", "
+                               "expected-end-cs-val=%" PRIu64 ", "
+                               "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                               "trace-name=\"%s\", path=\"%s/%s\"",
+                               stream->discarded_events_state.end_cs,
+                               expected_cs,
+                               bt_stream_get_id(ir_stream),
+                               bt_stream_get_name(ir_stream),
+                               bt_trace_get_name(
+                                       bt_stream_borrow_trace_const(ir_stream)),
+                               stream->trace->path->str, stream->file_name->str);
+                       status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                       goto end;
+               }
+       }
+
+       ret = fs_sink_stream_close_packet(stream, cs);
+       if (ret) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to close packet.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       /*
+        * We're not in a discarded events time range anymore since we
+        * require that the discarded events time ranges go from one
+        * packet's end time to the next packet's end time, and we're
+        * handling a packet end message here.
+        */
+       stream->discarded_events_state.in_range = false;
+
+end:
+       return status;
+}
+
+static inline
+bt_component_class_sink_consume_method_status handle_stream_beginning_msg(
+               struct fs_sink_comp *fs_sink, const bt_message *msg)
+{
+       bt_component_class_sink_consume_method_status status =
+               BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
+       const bt_stream *ir_stream =
+               bt_message_stream_beginning_borrow_stream_const(msg);
+       const bt_stream_class *ir_sc =
+               bt_stream_borrow_class_const(ir_stream);
+       struct fs_sink_stream *stream;
+       bool packets_have_beginning_end_cs =
+               bt_stream_class_packets_have_beginning_default_clock_snapshot(ir_sc) &&
+               bt_stream_class_packets_have_end_default_clock_snapshot(ir_sc);
+
+       /*
+        * Not supported: discarded events or discarded packets support
+        * without packets support. Packets are the way to know where
+        * discarded events/packets occurred in CTF 1.8.
+        */
+       if (!bt_stream_class_supports_packets(ir_sc)) {
+               BT_ASSERT(!bt_stream_class_supports_discarded_packets(ir_sc));
+
+               if (!fs_sink->ignore_discarded_events &&
+                               bt_stream_class_supports_discarded_events(ir_sc)) {
+                       BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                               "Unsupported stream: "
+                               "stream does not support packets, "
+                               "but supports discarded events: "
+                               "stream-addr=%p, "
+                               "stream-id=%" PRIu64 ", "
+                               "stream-name=\"%s\"",
+                               ir_stream, bt_stream_get_id(ir_stream),
+                               bt_stream_get_name(ir_stream));
+                       status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                       goto end;
+               }
+       }
+
+       /*
+        * Not supported: discarded events with default clock snapshots,
+        * but packet beginning/end without default clock snapshot.
+        */
+       if (!fs_sink->ignore_discarded_events &&
+                       bt_stream_class_discarded_events_have_default_clock_snapshots(ir_sc) &&
+                       !packets_have_beginning_end_cs) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Unsupported stream: discarded events have "
+                       "default clock snapshots, but packets have no "
+                       "beginning and/or end default clock snapshots: "
+                       "stream-addr=%p, "
+                       "stream-id=%" PRIu64 ", "
+                       "stream-name=\"%s\"",
+                       ir_stream, bt_stream_get_id(ir_stream),
+                       bt_stream_get_name(ir_stream));
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       /*
+        * Not supported: discarded packets with default clock
+        * snapshots, but packet beginning/end without default clock
+        * snapshot.
+        */
+       if (!fs_sink->ignore_discarded_packets &&
+                       bt_stream_class_discarded_packets_have_default_clock_snapshots(ir_sc) &&
+                       !packets_have_beginning_end_cs) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Unsupported stream: discarded packets have "
+                       "default clock snapshots, but packets have no "
+                       "beginning and/or end default clock snapshots: "
+                       "stream-addr=%p, "
+                       "stream-id=%" PRIu64 ", "
+                       "stream-name=\"%s\"",
+                       ir_stream, bt_stream_get_id(ir_stream),
+                       bt_stream_get_name(ir_stream));
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       stream = borrow_stream(fs_sink, ir_stream);
+       if (!stream) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to borrow stream.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       BT_COMP_LOGI("Created new, empty stream file: "
+               "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+               "trace-name=\"%s\", path=\"%s/%s\"",
+               bt_stream_get_id(ir_stream), bt_stream_get_name(ir_stream),
+               bt_trace_get_name(bt_stream_borrow_trace_const(ir_stream)),
+               stream->trace->path->str, stream->file_name->str);
+
+end:
+       return status;
+}
+
+static inline
+bt_component_class_sink_consume_method_status handle_stream_end_msg(
+               struct fs_sink_comp *fs_sink, const bt_message *msg)
+{
+       bt_component_class_sink_consume_method_status status =
+               BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
+       const bt_stream *ir_stream =
+               bt_message_stream_end_borrow_stream_const(msg);
+       struct fs_sink_stream *stream;
+
+       stream = borrow_stream(fs_sink, ir_stream);
+       if (!stream) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to borrow stream.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       if (G_UNLIKELY(!stream->sc->has_packets &&
+                       stream->packet_state.is_open)) {
+               /* Close stream's current artificial packet */
+               int ret = fs_sink_stream_close_packet(stream, NULL);
+
+               if (ret) {
+                       BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                               "Failed to close packet.");
+                       status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+                       goto end;
+               }
+       }
+
+       BT_COMP_LOGI("Closing stream file: "
+               "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+               "trace-name=\"%s\", path=\"%s/%s\"",
+               bt_stream_get_id(ir_stream), bt_stream_get_name(ir_stream),
+               bt_trace_get_name(bt_stream_borrow_trace_const(ir_stream)),
+               stream->trace->path->str, stream->file_name->str);
+
+       /*
+        * This destroys the stream object and frees all its resources,
+        * closing the stream file.
+        */
+       g_hash_table_remove(stream->trace->streams, ir_stream);
+
+end:
+       return status;
+}
+
+static inline
+bt_component_class_sink_consume_method_status handle_discarded_events_msg(
+               struct fs_sink_comp *fs_sink, const bt_message *msg)
+{
+       bt_component_class_sink_consume_method_status status =
+               BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
+       const bt_stream *ir_stream =
+               bt_message_discarded_events_borrow_stream_const(msg);
+       struct fs_sink_stream *stream;
+       const bt_clock_snapshot *cs = NULL;
+       bt_property_availability avail;
+       uint64_t count;
+
+       stream = borrow_stream(fs_sink, ir_stream);
+       if (!stream) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to borrow stream.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       if (fs_sink->ignore_discarded_events) {
+               BT_COMP_LOGI("Ignoring discarded events message: "
+                       "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                       "trace-name=\"%s\", path=\"%s/%s\"",
+                       bt_stream_get_id(ir_stream),
+                       bt_stream_get_name(ir_stream),
+                       bt_trace_get_name(
+                               bt_stream_borrow_trace_const(ir_stream)),
+                       stream->trace->path->str, stream->file_name->str);
+               goto end;
+       }
+
+       if (stream->discarded_events_state.in_range) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Unsupported contiguous discarded events message: "
+                       "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                       "trace-name=\"%s\", path=\"%s/%s\"",
+                       bt_stream_get_id(ir_stream),
+                       bt_stream_get_name(ir_stream),
+                       bt_trace_get_name(
+                               bt_stream_borrow_trace_const(ir_stream)),
+                       stream->trace->path->str, stream->file_name->str);
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       /*
+        * If we're currently in an opened packet (got a packet
+        * beginning message, but no packet end message yet), we do not
+        * support having a discarded events message with a time range
+        * because we require that the discarded events message's time
+        * range go from a packet's end time to the next packet's end
+        * time.
+        */
+       if (stream->packet_state.is_open &&
+                       stream->sc->discarded_events_has_ts) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Unsupported discarded events message with "
+                       "default clock snapshots occurring within a packet: "
+                       "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                       "trace-name=\"%s\", path=\"%s/%s\"",
+                       bt_stream_get_id(ir_stream),
+                       bt_stream_get_name(ir_stream),
+                       bt_trace_get_name(
+                               bt_stream_borrow_trace_const(ir_stream)),
+                       stream->trace->path->str, stream->file_name->str);
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       if (stream->sc->discarded_events_has_ts) {
+               /*
+                * Make the stream's state be in the time range of a
+                * discarded events message since we have the message's
+                * time range (`stream->sc->discarded_events_has_ts`).
+                */
+               stream->discarded_events_state.in_range = true;
+
+               /*
+                * The clock snapshot values will be validated when
+                * handling the next packet beginning and end messages
+                * (next calls to handle_packet_beginning_msg() and
+                * handle_packet_end_msg()).
+                */
+               cs = bt_message_discarded_events_borrow_beginning_default_clock_snapshot_const(
+                       msg);
+               BT_ASSERT(cs);
+               stream->discarded_events_state.beginning_cs =
+                       bt_clock_snapshot_get_value(cs);
+               cs = bt_message_discarded_events_borrow_end_default_clock_snapshot_const(
+                       msg);
+               BT_ASSERT(cs);
+               stream->discarded_events_state.end_cs = bt_clock_snapshot_get_value(cs);
+       }
+
+       avail = bt_message_discarded_events_get_count(msg, &count);
+       if (avail != BT_PROPERTY_AVAILABILITY_AVAILABLE) {
+               /*
+                * There's no specific count of discarded events: set it
+                * to 1 so that we know that we at least discarded
+                * something.
+                */
+               count = 1;
+       }
+
+       stream->packet_state.discarded_events_counter += count;
+
+end:
+       return status;
+}
+
+static inline
+bt_component_class_sink_consume_method_status handle_discarded_packets_msg(
+               struct fs_sink_comp *fs_sink, const bt_message *msg)
+{
+       bt_component_class_sink_consume_method_status status =
+               BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
+       const bt_stream *ir_stream =
+               bt_message_discarded_packets_borrow_stream_const(msg);
+       struct fs_sink_stream *stream;
+       const bt_clock_snapshot *cs = NULL;
+       bt_property_availability avail;
+       uint64_t count;
+
+       stream = borrow_stream(fs_sink, ir_stream);
+       if (!stream) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to borrow stream.");
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       if (fs_sink->ignore_discarded_packets) {
+               BT_COMP_LOGI("Ignoring discarded packets message: "
+                       "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                       "trace-name=\"%s\", path=\"%s/%s\"",
+                       bt_stream_get_id(ir_stream),
+                       bt_stream_get_name(ir_stream),
+                       bt_trace_get_name(
+                               bt_stream_borrow_trace_const(ir_stream)),
+                       stream->trace->path->str, stream->file_name->str);
+               goto end;
+       }
+
+       if (stream->discarded_packets_state.in_range) {
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Unsupported contiguous discarded packets message: "
+                       "stream-id=%" PRIu64 ", stream-name=\"%s\", "
+                       "trace-name=\"%s\", path=\"%s/%s\"",
+                       bt_stream_get_id(ir_stream),
+                       bt_stream_get_name(ir_stream),
+                       bt_trace_get_name(
+                               bt_stream_borrow_trace_const(ir_stream)),
+                       stream->trace->path->str, stream->file_name->str);
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_ERROR;
+               goto end;
+       }
+
+       /*
+        * Discarded packets messages are guaranteed to occur between
+        * packets.
+        */
+       BT_ASSERT(!stream->packet_state.is_open);
+
+       if (stream->sc->discarded_packets_has_ts) {
+               /*
+                * Make the stream's state be in the time range of a
+                * discarded packets message since we have the message's
+                * time range (`stream->sc->discarded_packets_has_ts`).
+                */
+               stream->discarded_packets_state.in_range = true;
+
+               /*
+                * The clock snapshot values will be validated when
+                * handling the next packet beginning message (next call
+                * to handle_packet_beginning_msg()).
+                */
+               cs = bt_message_discarded_packets_borrow_beginning_default_clock_snapshot_const(
+                       msg);
+               BT_ASSERT(cs);
+               stream->discarded_packets_state.beginning_cs =
+                       bt_clock_snapshot_get_value(cs);
+               cs = bt_message_discarded_packets_borrow_end_default_clock_snapshot_const(
+                       msg);
+               BT_ASSERT(cs);
+               stream->discarded_packets_state.end_cs =
+                       bt_clock_snapshot_get_value(cs);
+       }
+
+       avail = bt_message_discarded_packets_get_count(msg, &count);
+       if (avail != BT_PROPERTY_AVAILABILITY_AVAILABLE) {
+               /*
+                * There's no specific count of discarded packets: set
+                * it to 1 so that we know that we at least discarded
+                * something.
+                */
+               count = 1;
+       }
+
+       stream->packet_state.seq_num += count;
+
+end:
+       return status;
+}
+
+static inline
+void put_messages(bt_message_array_const msgs, uint64_t count)
+{
+       uint64_t i;
+
+       for (i = 0; i < count; i++) {
+               BT_MESSAGE_PUT_REF_AND_RESET(msgs[i]);
+       }
+}
+
+BT_HIDDEN
+bt_component_class_sink_consume_method_status ctf_fs_sink_consume(
+               bt_self_component_sink *self_comp)
+{
+       bt_component_class_sink_consume_method_status status =
+               BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK;
+       struct fs_sink_comp *fs_sink;
+       bt_message_iterator_next_status next_status;
+       uint64_t msg_count = 0;
+       bt_message_array_const msgs;
+
+       fs_sink = (fs_sink_comp *) bt_self_component_get_data(
+                       bt_self_component_sink_as_self_component(self_comp));
+       BT_ASSERT_DBG(fs_sink);
+       BT_ASSERT_DBG(fs_sink->upstream_iter);
+
+       /* Consume messages */
+       next_status = bt_message_iterator_next(
+               fs_sink->upstream_iter, &msgs, &msg_count);
+       if (next_status < 0) {
+               status = (bt_component_class_sink_consume_method_status) next_status;
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to get next message from upstream iterator.");
+               goto end;
+       }
+
+       switch (next_status) {
+       case BT_MESSAGE_ITERATOR_NEXT_STATUS_OK:
+       {
+               uint64_t i;
+
+               for (i = 0; i < msg_count; i++) {
+                       const bt_message *msg = msgs[i];
+
+                       BT_ASSERT_DBG(msg);
+
+                       switch (bt_message_get_type(msg)) {
+                       case BT_MESSAGE_TYPE_EVENT:
+                               status = handle_event_msg(fs_sink, msg);
+                               break;
+                       case BT_MESSAGE_TYPE_PACKET_BEGINNING:
+                               status = handle_packet_beginning_msg(
+                                       fs_sink, msg);
+                               break;
+                       case BT_MESSAGE_TYPE_PACKET_END:
+                               status = handle_packet_end_msg(
+                                       fs_sink, msg);
+                               break;
+                       case BT_MESSAGE_TYPE_MESSAGE_ITERATOR_INACTIVITY:
+                               /* Ignore */
+                               BT_COMP_LOGD_STR("Ignoring message iterator inactivity message.");
+                               break;
+                       case BT_MESSAGE_TYPE_STREAM_BEGINNING:
+                               status = handle_stream_beginning_msg(
+                                       fs_sink, msg);
+                               break;
+                       case BT_MESSAGE_TYPE_STREAM_END:
+                               status = handle_stream_end_msg(
+                                       fs_sink, msg);
+                               break;
+                       case BT_MESSAGE_TYPE_DISCARDED_EVENTS:
+                               status = handle_discarded_events_msg(
+                                       fs_sink, msg);
+                               break;
+                       case BT_MESSAGE_TYPE_DISCARDED_PACKETS:
+                               status = handle_discarded_packets_msg(
+                                       fs_sink, msg);
+                               break;
+                       default:
+                               bt_common_abort();
+                       }
+
+                       BT_MESSAGE_PUT_REF_AND_RESET(msgs[i]);
+
+                       if (status != BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK) {
+                               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                                       "Failed to handle message: "
+                                       "generated CTF traces could be incomplete: "
+                                       "output-dir-path=\"%s\"",
+                                       fs_sink->output_dir_path->str);
+                               goto error;
+                       }
+               }
+
+               break;
+       }
+       case BT_MESSAGE_ITERATOR_NEXT_STATUS_AGAIN:
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_AGAIN;
+               break;
+       case BT_MESSAGE_ITERATOR_NEXT_STATUS_END:
+               /* TODO: Finalize all traces (should already be done?) */
+               status = BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_END;
+               break;
+       default:
+               break;
+       }
+
+       goto end;
+
+error:
+       BT_ASSERT(status != BT_COMPONENT_CLASS_SINK_CONSUME_METHOD_STATUS_OK);
+       put_messages(msgs, msg_count);
+
+end:
+       return status;
+}
+
+BT_HIDDEN
+bt_component_class_sink_graph_is_configured_method_status
+ctf_fs_sink_graph_is_configured(
+               bt_self_component_sink *self_comp)
+{
+       bt_component_class_sink_graph_is_configured_method_status status;
+       bt_message_iterator_create_from_sink_component_status
+               msg_iter_status;
+       fs_sink_comp *fs_sink = (fs_sink_comp *) bt_self_component_get_data(
+                       bt_self_component_sink_as_self_component(self_comp));
+
+       msg_iter_status =
+               bt_message_iterator_create_from_sink_component(
+                       self_comp,
+                       bt_self_component_sink_borrow_input_port_by_name(
+                               self_comp, in_port_name), &fs_sink->upstream_iter);
+       if (msg_iter_status != BT_MESSAGE_ITERATOR_CREATE_FROM_SINK_COMPONENT_STATUS_OK) {
+               status = (bt_component_class_sink_graph_is_configured_method_status) msg_iter_status;
+               BT_COMP_LOGE_APPEND_CAUSE(fs_sink->self_comp,
+                       "Failed to create upstream iterator.");
+               goto end;
+       }
+
+       status = BT_COMPONENT_CLASS_SINK_GRAPH_IS_CONFIGURED_METHOD_STATUS_OK;
+end:
+       return status;
+}
+
+BT_HIDDEN
+void ctf_fs_sink_finalize(bt_self_component_sink *self_comp)
+{
+       fs_sink_comp *fs_sink = (fs_sink_comp *) bt_self_component_get_data(
+                       bt_self_component_sink_as_self_component(self_comp));
+
+       destroy_fs_sink_comp(fs_sink);
+}
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