Recursively search the plugin path
[babeltrace.git] / converter / babeltrace.c
index f75a7976a9523cbc2b44de83ffb0d50f6bb4d03e..035c4a250badf04c0fe683671dd16cb35afb3d07 100644 (file)
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
  */
 
-#define _XOPEN_SOURCE 700
-#include <config.h>
 #include <babeltrace/babeltrace.h>
-#include <babeltrace/format.h>
-#include <babeltrace/context.h>
-#include <babeltrace/ctf/types.h>
-#include <babeltrace/ctf-text/types.h>
-#include <babeltrace/iterator.h>
-#include <popt.h>
-#include <errno.h>
+#include <babeltrace/plugin/component-factory.h>
+#include <babeltrace/plugin/plugin.h>
+#include <babeltrace/plugin/component-class.h>
+#include <babeltrace/ref.h>
+#include <babeltrace/values.h>
 #include <stdlib.h>
-#include <ctype.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <ftw.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <inttypes.h>
-
 #include <babeltrace/ctf-ir/metadata.h>        /* for clocks */
+#include <popt.h>
+#include <string.h>
+#include <stdio.h>
 
-#define DEFAULT_FILE_ARRAY_SIZE        1
-static char *opt_input_format;
-static char *opt_output_format;
-
-static const char *opt_input_path;
-static const char *opt_output_path;
-
-static struct trace_collection trace_collection_read;
-static struct format *fmt_read;
 
-void strlower(char *str)
-{
-       while (*str) {
-               *str = tolower(*str);
-               str++;
-       }
-}
+static char *opt_plugin_path;
 
 enum {
        OPT_NONE = 0,
-       OPT_HELP,
-       OPT_LIST,
+       OPT_PLUGIN_PATH,
        OPT_VERBOSE,
        OPT_DEBUG,
-       OPT_NAMES,
-       OPT_FIELDS,
-       OPT_NO_DELTA,
-       OPT_CLOCK_OFFSET,
-       OPT_CLOCK_RAW,
-       OPT_CLOCK_SECONDS,
-       OPT_CLOCK_DATE,
-       OPT_CLOCK_GMT,
+       OPT_HELP,
 };
 
+/*
+ * We are _not_ using POPT_ARG_STRING's ability to store directly into
+ * variables, because we want to cast the return to non-const, which is
+ * not possible without using poptGetOptArg explicitly. This helps us
+ * controlling memory allocation correctly without making assumptions
+ * about undocumented behaviors. poptGetOptArg is documented as
+ * requiring the returned const char * to be freed by the caller.
+ */
 static struct poptOption long_options[] = {
        /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
-       { "input-format", 'i', POPT_ARG_STRING, &opt_input_format, OPT_NONE, NULL, NULL },
-       { "output-format", 'o', POPT_ARG_STRING, &opt_output_format, OPT_NONE, NULL, NULL },
-       { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
-       { "list", 'l', POPT_ARG_NONE, NULL, OPT_LIST, NULL, NULL },
+       { "plugin-path", 0, POPT_ARG_STRING, NULL, OPT_PLUGIN_PATH, NULL, NULL },
        { "verbose", 'v', POPT_ARG_NONE, NULL, OPT_VERBOSE, NULL, NULL },
        { "debug", 'd', POPT_ARG_NONE, NULL, OPT_DEBUG, NULL, NULL },
-       { "names", 'n', POPT_ARG_STRING, NULL, OPT_NAMES, NULL, NULL },
-       { "fields", 'f', POPT_ARG_STRING, NULL, OPT_FIELDS, NULL, NULL },
-       { "no-delta", 0, POPT_ARG_NONE, NULL, OPT_NO_DELTA, NULL, NULL },
-       { "clock-offset", 0, POPT_ARG_STRING, NULL, OPT_CLOCK_OFFSET, NULL, NULL },
-       { "clock-raw", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_RAW, NULL, NULL },
-       { "clock-seconds", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_SECONDS, NULL, NULL },
-       { "clock-date", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_DATE, NULL, NULL },
-       { "clock-gmt", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_GMT, NULL, NULL },
        { NULL, 0, 0, NULL, 0, NULL, NULL },
 };
 
-static void list_formats(FILE *fp)
-{
-       fprintf(fp, "\n");
-       bt_fprintf_format_list(fp);
-}
-
-static void usage(FILE *fp)
-{
-       fprintf(fp, "BabelTrace Trace Viewer and Converter %s\n\n", VERSION);
-       fprintf(fp, "usage : babeltrace [OPTIONS] INPUT <OUTPUT>\n");
-       fprintf(fp, "\n");
-       fprintf(fp, "  INPUT                          Input trace path\n");
-       fprintf(fp, "  OUTPUT                         Output trace path (default: stdout)\n");
-       fprintf(fp, "\n");
-       fprintf(fp, "  -i, --input-format FORMAT      Input trace format (default: ctf)\n");
-       fprintf(fp, "  -o, --output-format FORMAT     Output trace format (default: text)\n");
-       fprintf(fp, "\n");
-       fprintf(fp, "  -h, --help                     This help message\n");
-       fprintf(fp, "  -l, --list                     List available formats\n");
-       fprintf(fp, "  -v, --verbose                  Verbose mode\n");
-       fprintf(fp, "                                 (or set BABELTRACE_VERBOSE environment variable)\n");
-       fprintf(fp, "  -d, --debug                    Debug mode\n");
-       fprintf(fp, "                                 (or set BABELTRACE_DEBUG environment variable)\n");
-       fprintf(fp, "      --no-delta                 Do not print time delta between consecutive events\n");
-       fprintf(fp, "  -n, --names name1<,name2,...>  Print field names:\n");
-       fprintf(fp, "                                     (payload OR args OR arg)\n");
-       fprintf(fp, "                                     all, scope, header, (context OR ctx)\n");
-       fprintf(fp, "                                        (payload active by default)\n");
-       fprintf(fp, "  -f, --fields name1<,name2,...> Print additional fields:\n");
-       fprintf(fp, "                                     all, trace, trace:domain, trace:procname,\n");
-       fprintf(fp, "                                     trace:vpid, loglevel.\n");
-       fprintf(fp, "      --clock-raw                Disregard internal clock offset (use raw value)\n");
-       fprintf(fp, "      --clock-offset seconds     Clock offset in seconds\n");
-       fprintf(fp, "      --clock-seconds            Print the timestamps as [sec.ns]\n");
-       fprintf(fp, "                                 (default is: [hh:mm:ss.ns])\n");
-       fprintf(fp, "      --clock-date               Print clock date\n");
-       fprintf(fp, "      --clock-gmt                Print clock in GMT time zone (default: local time zone)\n");
-       list_formats(fp);
-       fprintf(fp, "\n");
-}
-
-static int get_names_args(poptContext *pc)
-{
-       char *str, *strlist, *strctx;
-
-       opt_payload_field_names = 0;
-       strlist = (char *) poptGetOptArg(*pc);
-       if (!strlist) {
-               return -EINVAL;
-       }
-       str = strtok_r(strlist, ",", &strctx);
-       do {
-               if (!strcmp(str, "all"))
-                       opt_all_field_names = 1;
-               else if (!strcmp(str, "scope"))
-                       opt_scope_field_names = 1;
-               else if (!strcmp(str, "context") || !strcmp(str, "ctx"))
-                       opt_context_field_names = 1;
-               else if (!strcmp(str, "header"))
-                       opt_header_field_names = 1;
-               else if (!strcmp(str, "payload") || !strcmp(str, "args") || !strcmp(str, "arg"))
-                       opt_payload_field_names = 1;
-               else {
-                       fprintf(stderr, "[error] unknown field name type %s\n", str);
-                       return -EINVAL;
-               }
-       } while ((str = strtok_r(NULL, ",", &strctx)));
-       return 0;
-}
-
-static int get_fields_args(poptContext *pc)
-{
-       char *str, *strlist, *strctx;
-
-       strlist = (char *) poptGetOptArg(*pc);
-       if (!strlist) {
-               return -EINVAL;
-       }
-       str = strtok_r(strlist, ",", &strctx);
-       do {
-               if (!strcmp(str, "all"))
-                       opt_all_fields = 1;
-               else if (!strcmp(str, "trace"))
-                       opt_trace_field = 1;
-               else if (!strcmp(str, "trace:domain"))
-                       opt_trace_domain_field = 1;
-               else if (!strcmp(str, "trace:procname"))
-                       opt_trace_procname_field = 1;
-               else if (!strcmp(str, "trace:vpid"))
-                       opt_trace_vpid_field = 1;
-               else if (!strcmp(str, "loglevel"))
-                       opt_loglevel_field = 1;
-               else {
-                       fprintf(stderr, "[error] unknown field type %s\n", str);
-                       return -EINVAL;
-               }
-       } while ((str = strtok_r(NULL, ",", &strctx)));
-       return 0;
-}
-
 /*
  * Return 0 if caller should continue, < 0 if caller should return
  * error, > 0 if caller should exit without reporting error.
@@ -203,7 +75,6 @@ static int parse_options(int argc, char **argv)
        int opt, ret = 0;
 
        if (argc == 1) {
-               usage(stdout);
                return 1;       /* exit cleanly */
        }
 
@@ -211,84 +82,33 @@ static int parse_options(int argc, char **argv)
        poptReadDefaultConfig(pc, 0);
 
        /* set default */
+       opt_context_field_names = 1;
        opt_payload_field_names = 1;
 
        while ((opt = poptGetNextOpt(pc)) != -1) {
                switch (opt) {
                case OPT_HELP:
-                       usage(stdout);
                        ret = 1;        /* exit cleanly */
                        goto end;
-               case OPT_LIST:
-                       list_formats(stdout);
-                       ret = 1;
-                       goto end;
-               case OPT_VERBOSE:
-                       babeltrace_verbose = 1;
-                       break;
-               case OPT_NAMES:
-                       if (get_names_args(&pc)) {
+               case OPT_PLUGIN_PATH:
+                       opt_plugin_path = (char *) poptGetOptArg(pc);
+                       if (!opt_plugin_path) {
                                ret = -EINVAL;
                                goto end;
-                       }
+                       }                       ;
                        break;
-               case OPT_FIELDS:
-                       if (get_fields_args(&pc)) {
-                               ret = -EINVAL;
-                               goto end;
-                       }
+               case OPT_VERBOSE:
+                       babeltrace_verbose = 1;
                        break;
                case OPT_DEBUG:
                        babeltrace_debug = 1;
                        break;
-               case OPT_NO_DELTA:
-                       opt_delta_field = 0;
-                       break;
-               case OPT_CLOCK_RAW:
-                       opt_clock_raw = 1;
-                       break;
-               case OPT_CLOCK_OFFSET:
-               {
-                       char *str, *endptr;
-
-                       str = poptGetOptArg(pc);
-                       if (!str) {
-                               fprintf(stderr, "[error] Missing --clock-offset argument\n");
-                               ret = -EINVAL;
-                               goto end;
-                       }
-                       errno = 0;
-                       opt_clock_offset = strtoull(str, &endptr, 0);
-                       if (*endptr != '\0' || str == endptr || errno != 0) {
-                               fprintf(stderr, "[error] Incorrect --clock-offset argument: %s\n", str);
-                               ret = -EINVAL;
-                               goto end;
-                       }
-                       break;
-               }
-               case OPT_CLOCK_SECONDS:
-                       opt_clock_seconds = 1;
-                       break;
-               case OPT_CLOCK_DATE:
-                       opt_clock_date = 1;
-                       break;
-               case OPT_CLOCK_GMT:
-                       opt_clock_gmt = 1;
-                       break;
-
                default:
                        ret = -EINVAL;
                        goto end;
                }
        }
 
-       opt_input_path = poptGetArg(pc);
-       if (!opt_input_path) {
-               ret = -EINVAL;
-               goto end;
-       }
-       opt_output_path = poptGetArg(pc);
-
 end:
        if (pc) {
                poptFreeContext(pc);
@@ -296,368 +116,146 @@ end:
        return ret;
 }
 
-static void init_trace_collection(struct trace_collection *tc)
-{
-       tc->array = g_ptr_array_sized_new(DEFAULT_FILE_ARRAY_SIZE);
-       tc->clocks = g_hash_table_new(g_direct_hash, g_direct_equal);
-       tc->single_clock_offset_avg = 0;
-       tc->offset_first = 0;
-       tc->delta_offset_first_sum = 0;
-       tc->offset_nr = 0;
-}
-
-/*
- * finalize_trace_collection() closes the opened traces for read
- * and free the memory allocated for trace collection
- */
-static void finalize_trace_collection(struct trace_collection *tc)
+static
+const char *component_type_str(enum bt_component_type type)
 {
-       int i;
-
-       for (i = 0; i < tc->array->len; i++) {
-               struct trace_descriptor *temp =
-                       g_ptr_array_index(tc->array, i);
-               fmt_read->close_trace(temp);
+       switch (type) {
+       case BT_COMPONENT_TYPE_SOURCE:
+               return "source";
+       case BT_COMPONENT_TYPE_SINK:
+               return "sink";
+       case BT_COMPONENT_TYPE_FILTER:
+               return "filter";
+       case BT_COMPONENT_TYPE_UNKNOWN:
+       default:
+               return "unknown";
        }
-       g_ptr_array_free(tc->array, TRUE);
-       g_hash_table_destroy(tc->clocks);
 }
 
-struct clock_match {
-       GHashTable *clocks;
-       struct ctf_clock *clock_match;
-       struct trace_collection *tc;
-};
-
-static void check_clock_match(gpointer key, gpointer value, gpointer user_data)
+static
+void print_detected_component_classes(struct bt_component_factory *factory)
 {
-       struct clock_match *match = user_data;
-       struct ctf_clock *clock_a = value, *clock_b;
+       int count, i;
 
-       if (clock_a->uuid != 0) {
-               /*
-                * Lookup the the trace clocks into the collection
-                * clocks.
-                */
-               clock_b = g_hash_table_lookup(match->clocks,
-                       (gpointer) (unsigned long) clock_a->uuid);
-               if (clock_b) {
-                       match->clock_match = clock_b;
-                       return;
-               }
-       } else if (clock_a->absolute) {
-               /*
-                * Absolute time references, such as NTP, are looked up
-                * by clock name.
-                */
-               clock_b = g_hash_table_lookup(match->clocks,
-                       (gpointer) (unsigned long) clock_a->name);
-               if (clock_b) {
-                       match->clock_match = clock_b;
-                       return;
-               }
-       }
-}
-
-static void clock_add(gpointer key, gpointer value, gpointer user_data)
-{
-       struct clock_match *clock_match = user_data;
-       GHashTable *tc_clocks = clock_match->clocks;
-       struct ctf_clock *t_clock = value;
-       GQuark v;
-
-       if (t_clock->absolute)
-               v = t_clock->name;
-       else
-               v = t_clock->uuid;
-       if (v) {
-               struct ctf_clock *tc_clock;
-
-               tc_clock = g_hash_table_lookup(tc_clocks,
-                               (gpointer) (unsigned long) v);
-               if (!tc_clock) {
-                       /*
-                        * For now, we only support CTF that has one
-                        * single clock uuid or name (absolute ref).
-                        */
-                       if (g_hash_table_size(tc_clocks) > 0) {
-                               fprintf(stderr, "[error] Only CTF traces with a single clock description are supported by this babeltrace version.\n");
-                       }
-                       if (!clock_match->tc->offset_nr) {
-                               clock_match->tc->offset_first =
-                                       (t_clock->offset_s * 1000000000ULL) + t_clock->offset;
-                               clock_match->tc->delta_offset_first_sum = 0;
-                               clock_match->tc->offset_nr++;
-                               clock_match->tc->single_clock_offset_avg =
-                                       clock_match->tc->offset_first;
-                       }
-                       g_hash_table_insert(tc_clocks,
-                               (gpointer) (unsigned long) v,
-                               value);
-               } else {
-                       int64_t diff_ns;
-
-                       /*
-                        * Check that the offsets match. If not, warn
-                        * the user that we do an arbitrary choice.
-                        */
-                       diff_ns = tc_clock->offset_s;
-                       diff_ns -= t_clock->offset_s;
-                       diff_ns *= 1000000000ULL;
-                       diff_ns += tc_clock->offset;
-                       diff_ns -= t_clock->offset;
-                       printf_debug("Clock \"%s\" offset between traces has a delta of %" PRIu64 " ns.",
-                               g_quark_to_string(tc_clock->name),
-                               diff_ns < 0 ? -diff_ns : diff_ns);
-                       if (diff_ns > 10000) {
-                               fprintf(stderr, "[warning] Clock \"%s\" offset differs between traces (delta %" PRIu64 " ns). Using average.\n",
-                                       g_quark_to_string(tc_clock->name),
-                                       diff_ns < 0 ? -diff_ns : diff_ns);
-                       }
-                       /* Compute average */
-                       clock_match->tc->delta_offset_first_sum +=
-                               (t_clock->offset_s * 1000000000ULL) + t_clock->offset
-                               - clock_match->tc->offset_first;
-                       clock_match->tc->offset_nr++;
-                       clock_match->tc->single_clock_offset_avg =
-                               clock_match->tc->offset_first
-                               + (clock_match->tc->delta_offset_first_sum / clock_match->tc->offset_nr);
-               }
+       if (!babeltrace_verbose) {
+               return;
        }
-}
-
-/*
- * Whenever we add a trace to the trace collection, check that we can
- * correlate this trace with at least one other clock in the trace.
- */
-static int trace_collection_add(struct trace_collection *tc,
-                               struct trace_descriptor *td)
-{
-       struct ctf_trace *trace = container_of(td, struct ctf_trace, parent);
-
-       g_ptr_array_add(tc->array, td);
-       trace->collection = tc;
-
-       if (tc->array->len > 1) {
-               struct clock_match clock_match = {
-                       .clocks = tc->clocks,
-                       .clock_match = NULL,
-                       .tc = NULL,
-               };
 
-               /*
-                * With two or more traces, we need correlation info
-                * avalable.
-                */
-               g_hash_table_foreach(trace->clocks,
-                               check_clock_match,
-                               &clock_match);
-               if (!clock_match.clock_match) {
-                       fprintf(stderr, "[error] No clocks can be correlated and multiple traces are added to the collection.\n");
-                       goto error;
-               }
+       count = bt_component_factory_get_component_class_count(factory);
+       if (count <= 0) {
+               fprintf(stderr, "No component classes found. Please make sure your plug-in search path is set correctly.");
+               return;
        }
 
-       {
-               struct clock_match clock_match = {
-                       .clocks = tc->clocks,
-                       .clock_match = NULL,
-                       .tc = tc,
-               };
-
-               /*
-                * Add each clock from the trace clocks into the trace
-                * collection clocks.
-                */
-               g_hash_table_foreach(trace->clocks,
-                               clock_add,
-                               &clock_match);
+       printf_verbose("Found %d component classes.\n", count);
+       for (i = 0; i < count; i++) {
+               struct bt_component_class *component_class =
+                               bt_component_factory_get_component_class_index(
+                               factory, i);
+               struct bt_plugin *plugin = bt_component_class_get_plugin(
+                               component_class);
+               const char *plugin_name = bt_plugin_get_name(plugin);
+               const char *component_name = bt_component_class_get_name(
+                               component_class);
+               const char *path = bt_plugin_get_path(plugin);
+               const char *author = bt_plugin_get_author(plugin);
+               const char *license = bt_plugin_get_license(plugin);
+               const char *plugin_description = bt_plugin_get_description(
+                               plugin);
+               const char *component_description =
+                               bt_component_class_get_description(
+                                       component_class);
+               enum bt_component_type type = bt_component_class_get_type(
+                               component_class);
+
+               printf_verbose("[%s - %s (%s)]\n", plugin_name, component_name,
+                              component_type_str(type));
+               printf_verbose("\tpath: %s\n", path);
+               printf_verbose("\tauthor: %s\n", author);
+               printf_verbose("\tlicense: %s\n", license);
+               printf_verbose("\tplugin description: %s\n",
+                               plugin_description ? plugin_description : "None");
+               printf_verbose("\tcomponent description: %s\n",
+                               component_description ? component_description : "None");
+
+               bt_put(plugin);
+               bt_put(component_class);
        }
-       return 0;
-error:
-       return -EPERM;
 }
 
-int convert_trace(struct trace_descriptor *td_write,
-                 struct bt_context *ctx)
+static
+void test_sink_notifications(struct bt_component *sink)
 {
-       struct bt_iter *iter;
-       struct ctf_stream *stream;
-       struct ctf_stream_event *event;
-       struct ctf_text_stream_pos *sout;
-       struct bt_iter_pos begin_pos;
-       int ret;
-
-       sout = container_of(td_write, struct ctf_text_stream_pos,
-                       trace_descriptor);
-
-       begin_pos.type = BT_SEEK_BEGIN;
-       iter = bt_iter_create(ctx, &begin_pos, NULL);
-       if (!iter) {
-               ret = -1;
-               goto error_iter;
-       }
-       while (bt_iter_read_event(iter, &stream, &event) == 0) {
-               ret = sout->parent.event_cb(&sout->parent, stream);
-               if (ret) {
-                       fprintf(stderr, "[error] Writing event failed.\n");
-                       goto end;
-               }
-               ret = bt_iter_next(iter);
-               if (ret < 0)
-                       goto end;
-       }
-       ret = 0;
-
-end:
-       bt_iter_destroy(iter);
-error_iter:
-       return ret;
-}
-
-
-/*
- * traverse_dir() is the callback functiion for File Tree Walk (nftw).
- * it receives the path of the current entry (file, dir, link..etc) with
- * a flag to indicate the type of the entry.
- * if the entry being visited is a directory and contains a metadata file,
- * then open it for reading and save a trace_descriptor to that directory
- * in the read trace collection.
- */
-static int traverse_dir(const char *fpath, const struct stat *sb,
-                       int tflag, struct FTW *ftwbuf)
-{
-       int dirfd;
-       int fd;
-       struct trace_descriptor *td_read;
-       int ret;
-
-       if (tflag != FTW_D)
-               return 0;
-       dirfd = open(fpath, 0);
-       if (dirfd < 0) {
-               fprintf(stderr, "[error] unable to open trace "
-                       "directory file descriptor.\n");
-               return -1;
-       }
-       fd = openat(dirfd, "metadata", O_RDONLY);
-       if (fd < 0) {
-               close(dirfd);
-       } else {
-               close(fd);
-               close(dirfd);
-               td_read = fmt_read->open_trace(fpath, O_RDONLY,
-                               ctf_move_pos_slow, NULL);
-               if (!td_read) {
-                       fprintf(stderr, "Error opening trace \"%s\" "
-                                       "for reading.\n\n", fpath);
-                       return -1;      /* error */
-               }
-               ret = trace_collection_add(&trace_collection_read, td_read);
-               if (ret) {
-                       return -1;
-               }
-       }
-       return 0;       /* success */
+       return;
 }
 
 int main(int argc, char **argv)
 {
        int ret;
-       struct format *fmt_write;
-       struct trace_descriptor *td_write;
-       struct bt_context *ctx;
+       struct bt_component_factory *component_factory = NULL;
+       struct bt_component_class *source_class = NULL;
+       struct bt_component_class *sink_class = NULL;
+       struct bt_component *source = NULL, *sink = NULL;
+       struct bt_value *source_params = NULL, *sink_params = NULL;
 
        ret = parse_options(argc, argv);
        if (ret < 0) {
                fprintf(stderr, "Error parsing options.\n\n");
-               usage(stderr);
                exit(EXIT_FAILURE);
        } else if (ret > 0) {
                exit(EXIT_SUCCESS);
        }
+
        printf_verbose("Verbose mode active.\n");
        printf_debug("Debug mode active.\n");
 
-       if (opt_input_format)
-               strlower(opt_input_format);
-       if (opt_output_format)
-               strlower(opt_output_format);
-
-       printf_verbose("Converting from directory: %s\n", opt_input_path);
-       printf_verbose("Converting from format: %s\n",
-               opt_input_format ? : "ctf <default>");
-       printf_verbose("Converting to directory: %s\n",
-               opt_output_path ? : "<stdout>");
-       printf_verbose("Converting to format: %s\n",
-               opt_output_format ? : "text <default>");
-
-       if (!opt_input_format)
-               opt_input_format = "ctf";
-       if (!opt_output_format)
-               opt_output_format = "text";
-       fmt_read = bt_lookup_format(g_quark_from_static_string(opt_input_format));
-       if (!fmt_read) {
-               fprintf(stderr, "[error] Format \"%s\" is not supported.\n\n",
-                       opt_input_format);
-               exit(EXIT_FAILURE);
+       if (!opt_plugin_path) {
+               fprintf(stderr, "No plugin path specified, aborting...\n");
+               ret = -1;
+               goto end;
        }
-       fmt_write = bt_lookup_format(g_quark_from_static_string(opt_output_format));
-       if (!fmt_write) {
-               fprintf(stderr, "[error] format \"%s\" is not supported.\n\n",
-                       opt_output_format);
-               exit(EXIT_FAILURE);
+       printf_verbose("Looking-up plugins at %s\n",
+                       opt_plugin_path ? opt_plugin_path : "Invalid");
+       component_factory = bt_component_factory_create();
+       if (!component_factory) {
+               fprintf(stderr, "Failed to create component factory.\n");
+               ret = -1;
+               goto end;
        }
 
-       /*
-        * pass the input path to nftw() .
-        * specify traverse_dir() as the callback function.
-        * depth = 10 which is the max number of file descriptors
-        * that nftw() can open at a given time.
-        * flags = 0  check nftw documentation for more info .
-        */
-       init_trace_collection(&trace_collection_read);
-       ret = nftw(opt_input_path, traverse_dir, 10, 0);
-       if (ret != 0) {
-               fprintf(stderr, "[error] opening trace \"%s\" for reading.\n\n",
-                       opt_input_path);
-               goto error_td_read;
-       }
-       if (trace_collection_read.array->len == 0) {
-               fprintf(stderr, "[warning] no metadata file was found."
-                                               " no output was generated\n");
-               return 0;
-       }
-       ctx = bt_context_create(&trace_collection_read);
-       if (!ctx) {
-               fprintf(stderr, "Error allocating a new context\n");
-               goto error_td_read;
+       ret = bt_component_factory_load_recursive(component_factory, opt_plugin_path);
+       if (ret) {
+               fprintf(stderr, "Failed to load plugins.\n");
+               goto end;
        }
-       td_write = fmt_write->open_trace(opt_output_path, O_RDWR, NULL, NULL);
-       if (!td_write) {
-               fprintf(stderr, "Error opening trace \"%s\" for writing.\n\n",
-                       opt_output_path ? : "<none>");
-               goto error_td_write;
+
+       print_detected_component_classes(component_factory);
+
+       sink_class = bt_component_factory_get_component_class(component_factory,
+                       NULL, BT_COMPONENT_TYPE_SINK, "text");
+       if (!sink_class) {
+               fprintf(stderr, "Could not find text output component class. Aborting...\n");
+               ret = -1;
+               goto end;
        }
 
-       ret = convert_trace(td_write, ctx);
-       if (ret) {
-               fprintf(stderr, "Error printing trace.\n\n");
-               goto error_copy_trace;
+       sink = bt_component_create(sink_class, "bt_text_output", sink_params);
+       if (!sink) {
+               fprintf(stderr, "Failed to instanciate text output. Aborting...\n");
+               ret = -1;
+               goto end;
        }
 
-       fmt_write->close_trace(td_write);
-       finalize_trace_collection(&trace_collection_read);
-       bt_context_destroy(ctx);
-       printf_verbose("finished converting. Output written to:\n%s\n",
-                       opt_output_path ? : "<stdout>");
-       exit(EXIT_SUCCESS);
+       test_sink_notifications(sink);
 
-       /* Error handling */
-error_copy_trace:
-       fmt_write->close_trace(td_write);
-error_td_write:
-       finalize_trace_collection(&trace_collection_read);
-error_td_read:
-       exit(EXIT_FAILURE);
+       /* teardown and exit */
+end:
+       BT_PUT(component_factory);
+       BT_PUT(sink_class);
+       BT_PUT(source_class);
+       BT_PUT(source);
+       BT_PUT(sink);
+       BT_PUT(source_params);
+       BT_PUT(sink_params);
+       return ret ? 1 : 0;
 }
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