Fix error checking in bt_context_add_traces_recursive
[babeltrace.git] / converter / babeltrace.c
index 2e731712a38b0231d599daf96506a9c9863a8db7..aadeb441cf18ed81fa4a43b14d77e8d27389af72 100644 (file)
@@ -3,7 +3,9 @@
  *
  * Babeltrace Trace Converter
  *
- * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
+ *
+ * Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * all copies or substantial portions of the Software.
  */
 
+#define _GNU_SOURCE
+#include <config.h>
 #include <babeltrace/babeltrace.h>
 #include <babeltrace/format.h>
+#include <babeltrace/context.h>
+#include <babeltrace/ctf/types.h>
+#include <babeltrace/ctf/events.h>
+/* TODO: fix object model for format-agnostic callbacks */
+#include <babeltrace/ctf/events-internal.h>
+#include <babeltrace/ctf/iterator.h>
+#include <babeltrace/ctf-text/types.h>
+#include <babeltrace/iterator.h>
 #include <popt.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <fcntl.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <fts.h>
+
+#include <babeltrace/ctf-ir/metadata.h>        /* for clocks */
 
+#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;
 
-int babeltrace_verbose, babeltrace_debug;
+static struct format *fmt_read;
 
 void strlower(char *str)
 {
@@ -48,6 +66,15 @@ enum {
        OPT_LIST,
        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_CLOCK_FORCE_CORRELATE,
 };
 
 static struct poptOption long_options[] = {
@@ -58,6 +85,15 @@ static struct poptOption long_options[] = {
        { "list", 'l', POPT_ARG_NONE, NULL, OPT_LIST, 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 },
+       { "clock-force-correlate", 0, POPT_ARG_NONE, NULL, OPT_CLOCK_FORCE_CORRELATE, NULL, NULL },
        { NULL, 0, 0, NULL, 0, NULL, NULL },
 };
 
@@ -69,25 +105,100 @@ static void list_formats(FILE *fp)
 
 static void usage(FILE *fp)
 {
-       fprintf(fp, "BabelTrace Trace Converter %u.%u\n\n",
-               BABELTRACE_VERSION_MAJOR,
-               BABELTRACE_VERSION_MINOR);
+       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\n");
-       fprintf(fp, "  -o, --output-format FORMAT     Output trace format\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");
+       fprintf(fp, "      --clock-force-correlate    Assume that clocks are inherently correlated\n");
+       fprintf(fp, "                                 across traces.\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.
@@ -105,6 +216,9 @@ static int parse_options(int argc, char **argv)
        pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
        poptReadDefaultConfig(pc, 0);
 
+       /* set default */
+       opt_payload_field_names = 1;
+
        while ((opt = poptGetNextOpt(pc)) != -1) {
                switch (opt) {
                case OPT_HELP:
@@ -118,9 +232,59 @@ static int parse_options(int argc, char **argv)
                case OPT_VERBOSE:
                        babeltrace_verbose = 1;
                        break;
+               case OPT_NAMES:
+                       if (get_names_args(&pc)) {
+                               ret = -EINVAL;
+                               goto end;
+                       }
+                       break;
+               case OPT_FIELDS:
+                       if (get_fields_args(&pc)) {
+                               ret = -EINVAL;
+                               goto end;
+                       }
+                       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;
+               case OPT_CLOCK_FORCE_CORRELATE:
+                       opt_clock_force_correlate = 1;
+                       break;
+
                default:
                        ret = -EINVAL;
                        goto end;
@@ -133,6 +297,7 @@ static int parse_options(int argc, char **argv)
                goto end;
        }
        opt_output_path = poptGetArg(pc);
+
 end:
        if (pc) {
                poptFreeContext(pc);
@@ -140,16 +305,149 @@ end:
        return ret;
 }
 
+
+/*
+ * bt_context_add_traces_recursive: Open a trace recursively
+ *
+ * Find each trace present in the subdirectory starting from the given
+ * path, and add them to the context. The packet_seek parameter can be
+ * NULL: this specify to use the default format packet_seek.
+ *
+ * Return: 0 on success, nonzero on failure.
+ * Unable to open toplevel: failure.
+ * Unable to open some subdirectory or file: warn and continue;
+ */
+int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path,
+               const char *format_str,
+               void (*packet_seek)(struct stream_pos *pos,
+                       size_t offset, int whence))
+{
+       FTS *tree;
+       FTSENT *node;
+       GArray *trace_ids;
+       char lpath[PATH_MAX];
+       char * const paths[2] = { lpath, NULL };
+       int ret = -1;
+
+       /*
+        * Need to copy path, because fts_open can change it.
+        * It is the pointer array, not the strings, that are constant.
+        */
+       strncpy(lpath, path, PATH_MAX);
+       lpath[PATH_MAX - 1] = '\0';
+
+       tree = fts_open(paths, FTS_NOCHDIR | FTS_LOGICAL, 0);
+       if (tree == NULL) {
+               fprintf(stderr, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
+                               path);
+               return -EINVAL;
+       }
+
+       trace_ids = g_array_new(FALSE, TRUE, sizeof(int));
+
+       while ((node = fts_read(tree))) {
+               int dirfd, metafd;
+
+               if (!(node->fts_info & FTS_D))
+                       continue;
+
+               dirfd = open(node->fts_accpath, 0);
+               if (dirfd < 0) {
+                       fprintf(stderr, "[error] [Context] Unable to open trace "
+                               "directory file descriptor.\n");
+                       ret = dirfd;
+                       goto error;
+               }
+               metafd = openat(dirfd, "metadata", O_RDONLY);
+               if (metafd < 0) {
+                       ret = close(dirfd);
+                       if (ret < 0) {
+                               perror("close");
+                               goto error;
+                       }
+               } else {
+                       int trace_id;
+
+                       ret = close(metafd);
+                       if (ret < 0) {
+                               perror("close");
+                               goto error;
+                       }
+                       ret = close(dirfd);
+                       if (ret < 0) {
+                               perror("close");
+                               goto error;
+                       }
+
+                       trace_id = bt_context_add_trace(ctx,
+                               node->fts_accpath, format_str,
+                               packet_seek, NULL, NULL);
+                       if (trace_id < 0) {
+                               fprintf(stderr, "[error] [Context] opening trace \"%s\" from %s "
+                                       "for reading.\n", node->fts_accpath, path);
+                               ret = trace_id;
+                               goto error;
+                       }
+                       g_array_append_val(trace_ids, trace_id);
+               }
+       }
+
+       g_array_free(trace_ids, TRUE);
+       return ret;
+
+error:
+       return ret;
+}
+
+
+
+int convert_trace(struct trace_descriptor *td_write,
+                 struct bt_context *ctx)
+{
+       struct bt_ctf_iter *iter;
+       struct ctf_text_stream_pos *sout;
+       struct bt_iter_pos begin_pos;
+       struct bt_ctf_event *ctf_event;
+       int ret;
+
+       sout = container_of(td_write, struct ctf_text_stream_pos,
+                       trace_descriptor);
+
+       begin_pos.type = BT_SEEK_BEGIN;
+       iter = bt_ctf_iter_create(ctx, &begin_pos, NULL);
+       if (!iter) {
+               ret = -1;
+               goto error_iter;
+       }
+       while ((ctf_event = bt_ctf_iter_read_event(iter))) {
+               ret = sout->parent.event_cb(&sout->parent, ctf_event->stream);
+               if (ret) {
+                       fprintf(stderr, "[error] Writing event failed.\n");
+                       goto end;
+               }
+               ret = bt_iter_next(bt_ctf_get_iter(iter));
+               if (ret < 0)
+                       goto end;
+       }
+       ret = 0;
+
+end:
+       bt_ctf_iter_destroy(iter);
+error_iter:
+       return ret;
+}
+
 int main(int argc, char **argv)
 {
        int ret;
-       struct format *fmt_read, *fmt_write;
-       struct trace_descriptor *td_read, *td_write;
+       struct format *fmt_write;
+       struct trace_descriptor *td_write;
+       struct bt_context *ctx;
 
        ret = parse_options(argc, argv);
        if (ret < 0) {
-               fprintf(stdout, "Error parsing options.\n\n");
-               usage(stdout);
+               fprintf(stderr, "Error parsing options.\n\n");
+               usage(stderr);
                exit(EXIT_FAILURE);
        } else if (ret > 0) {
                exit(EXIT_SUCCESS);
@@ -162,10 +460,10 @@ int main(int argc, char **argv)
        if (opt_output_format)
                strlower(opt_output_format);
 
-       printf_verbose("Converting from file: %s\n", opt_input_path);
+       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 file: %s\n",
+       printf_verbose("Converting to directory: %s\n",
                opt_output_path ? : "<stdout>");
        printf_verbose("Converting to format: %s\n",
                opt_output_format ? : "text <default>");
@@ -176,48 +474,52 @@ int main(int argc, char **argv)
                opt_output_format = "text";
        fmt_read = bt_lookup_format(g_quark_from_static_string(opt_input_format));
        if (!fmt_read) {
-               fprintf(stdout, "[error] Format \"%s\" is not supported.\n\n",
+               fprintf(stderr, "[error] Format \"%s\" is not supported.\n\n",
                        opt_input_format);
                exit(EXIT_FAILURE);
        }
-       if (!opt_output_format)
-               opt_output_format = "ctf";
        fmt_write = bt_lookup_format(g_quark_from_static_string(opt_output_format));
        if (!fmt_write) {
-               fprintf(stdout, "[error] format \"%s\" is not supported.\n\n",
+               fprintf(stderr, "[error] format \"%s\" is not supported.\n\n",
                        opt_output_format);
                exit(EXIT_FAILURE);
        }
 
-       td_read = fmt_read->open_trace(opt_input_path, O_RDONLY);
-       if (!td_read) {
-               fprintf(stdout, "[error] opening trace \"%s\" for reading.\n\n",
+       ctx = bt_context_create();
+
+       ret = bt_context_add_traces_recursive(ctx, opt_input_path,
+                       opt_input_format, NULL);
+       if (ret) {
+               fprintf(stderr, "[error] opening trace \"%s\" for reading.\n\n",
                        opt_input_path);
                goto error_td_read;
        }
 
-       td_write = fmt_write->open_trace(opt_output_path, O_WRONLY);
+       td_write = fmt_write->open_trace(opt_output_path, O_RDWR, NULL, NULL);
        if (!td_write) {
-               fprintf(stdout, "Error opening trace \"%s\" for writing.\n\n",
+               fprintf(stderr, "Error opening trace \"%s\" for writing.\n\n",
                        opt_output_path ? : "<none>");
                goto error_td_write;
        }
 
-       ret = convert_trace(td_write, td_read);
+       ret = convert_trace(td_write, ctx);
        if (ret) {
-               fprintf(stdout, "Error printing trace.\n\n");
+               fprintf(stderr, "Error printing trace.\n\n");
                goto error_copy_trace;
        }
 
        fmt_write->close_trace(td_write);
-       fmt_read->close_trace(td_read);
+
+       bt_context_put(ctx);
+       printf_verbose("finished converting. Output written to:\n%s\n",
+                       opt_output_path ? : "<stdout>");
        exit(EXIT_SUCCESS);
 
        /* Error handling */
 error_copy_trace:
        fmt_write->close_trace(td_write);
 error_td_write:
-       fmt_read->close_trace(td_read);
+       bt_context_put(ctx);
 error_td_read:
        exit(EXIT_FAILURE);
 }
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