--- /dev/null
+/*
+ * Copyright (C) 2012 - David Goulet <dgoulet@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License, version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#define _GNU_SOURCE
+#include <popt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "../command.h"
+#include "../utils.h"
+
+#include <common/defaults.h>
+#include <common/sessiond-comm/sessiond-comm.h>
+#include <common/uri.h>
+
+static int opt_kernel;
+static int opt_userspace;
+static int opt_enable;
+static char *opt_session_name;
+static char *opt_uris;
+static char *opt_ctrl_uris;
+static char *opt_data_uris;
+static char *opt_uris_arg;
+
+static struct lttng_handle *handle;
+
+enum {
+ OPT_HELP = 1,
+ OPT_LIST_OPTIONS,
+};
+
+static struct poptOption long_options[] = {
+ /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
+ {"help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL},
+ {"list-options", 0, POPT_ARG_NONE, NULL, OPT_LIST_OPTIONS, NULL, NULL},
+ {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
+ {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
+ {"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
+ {"set-uri", 'U', POPT_ARG_STRING, &opt_uris, 0, 0, 0},
+ {"ctrl-uri", 'C', POPT_ARG_STRING, &opt_ctrl_uris, 0, 0, 0},
+ {"data-uri", 'D', POPT_ARG_STRING, &opt_data_uris, 0, 0, 0},
+ {"enable", 'e', POPT_ARG_VAL, &opt_enable, 1, 0, 0},
+ {0, 0, 0, 0, 0, 0, 0}
+};
+
+/*
+ * usage
+ */
+static void usage(FILE *ofp)
+{
+ fprintf(ofp, "usage: lttng enable-consumer [-u|-k] [URI] [OPTIONS]\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "The default behavior is to enable a consumer to the current URI.\n");
+ fprintf(ofp, "The default URI is the local filesystem at the path of the session.\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "The enable-consumer feature supports both local and network transport.\n");
+ fprintf(ofp, "You must have a running lttng-relayd for network transmission.\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "You can optionally specify two URIs for respectively the\n");
+ fprintf(ofp, "control and data channel. URI supported:\n");
+ fprintf(ofp, " > file://PATH\n");
+ fprintf(ofp, " Local file full system path.\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, " > net://DST[:CTRL_PORT[:DATA_PORT]] and net6://...\n");
+ fprintf(ofp, " This will use the default network transport layer which is\n");
+ fprintf(ofp, " TCP for both control and data port. The default ports are\n");
+ fprintf(ofp, " respectively 5342 and 5343.\n");
+ fprintf(ofp, " Example:\n");
+ fprintf(ofp, " # lttng enable-consumer net://192.168.1.42 -k\n");
+ fprintf(ofp, " Uses TCP and default ports for the given destination.\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, " > tcp://DST:PORT and tcp6://DST:PORT\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "Options:\n");
+ fprintf(ofp, " -h, --help Show this help\n");
+ fprintf(ofp, " --list-options Simple listing of options\n");
+ fprintf(ofp, " -s, --session=NAME Apply to session name\n");
+ fprintf(ofp, " -k, --kernel Apply to the kernel tracer\n");
+ fprintf(ofp, " -u, --userspace Apply to the user-space tracer\n");
+ //fprintf(ofp, " -U, --set-uri=URI1[,URI2,...]\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "Extended Options:\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, "Using these options, each API call is controlled individually.\n");
+ fprintf(ofp, "For instance, -C does not enable the consumer automatically.\n");
+ fprintf(ofp, "\n");
+ fprintf(ofp, " -U, --set-uri=URI Set URI for the enable-consumer destination.\n");
+ fprintf(ofp, " It is persistent for the session lifetime.\n");
+ fprintf(ofp, " Redo the command to change it.\n");
+ fprintf(ofp, " This will set both data and control URI for network.\n");
+ //fprintf(ofp, " -C, --ctrl-uri=URI1[,URI2,...]\n");
+ fprintf(ofp, " -C, --ctrl-uri=URI Set control path URI.\n");
+ //fprintf(ofp, " -D, --data-uri=URI1[,URI2,...]\n");
+ fprintf(ofp, " -D, --data-uri=URI Set data path URI.\n");
+ fprintf(ofp, " -e, --enable Enable consumer\n");
+ fprintf(ofp, "\n");
+}
+
+/*
+ * Print URI message.
+ */
+static void print_uri_msg(struct lttng_uri *uri)
+{
+ char *dst;
+
+ switch (uri->dtype) {
+ case LTTNG_DST_IPV4:
+ dst = uri->dst.ipv4;
+ break;
+ case LTTNG_DST_IPV6:
+ dst = uri->dst.ipv6;
+ break;
+ case LTTNG_DST_PATH:
+ dst = uri->dst.path;
+ MSG("Consumer destination set to %s", dst);
+ goto end;
+ default:
+ DBG("Unknown URI destination");
+ goto end;
+ }
+
+ MSG("Consumer %s stream set to %s with the %s protocol on port %d",
+ uri->stype == LTTNG_STREAM_CONTROL ? "control" : "data",
+ dst, uri->proto == LTTNG_TCP ? "TCP" : "UNK", uri->port);
+
+end:
+ return;
+}
+
+/*
+ * Setting URIs taking from the command line arguments. There is some
+ * manipulations and special cases using the default args.
+ */
+static int set_consumer_arg_uris(struct lttng_uri *uri, size_t size)
+{
+ int ret, i;
+
+ if (size == 2) {
+ /* URIs are the control and data stream respectively for net:// */
+ uri[0].stype = LTTNG_STREAM_CONTROL;
+ uri[1].stype = LTTNG_STREAM_DATA;
+
+ for (i = 0; i < size; i++) {
+ ret = lttng_set_consumer_uri(handle, &uri[i]);
+ if (ret < 0) {
+ ERR("Setting %s stream URI: %s",
+ uri[i].stype == LTTNG_STREAM_DATA ? "data" : "control",
+ lttng_strerror(ret));
+ goto error;
+ }
+ /* Set default port if none was given */
+ if (uri[i].port == 0) {
+ if (uri[i].stype == LTTNG_STREAM_CONTROL) {
+ uri[i].port = DEFAULT_NETWORK_CONTROL_PORT;
+ } else {
+ uri[i].port = DEFAULT_NETWORK_DATA_PORT;
+ }
+ }
+ print_uri_msg(&uri[i]);
+ }
+ } else if (size == 1 && uri[0].dtype == LTTNG_DST_PATH) {
+ /* Set URI if it's file:// */
+ ret = lttng_set_consumer_uri(handle, &uri[0]);
+ if (ret < 0) {
+ ERR("Failed to set URI %s: %s", opt_uris_arg,
+ lttng_strerror(ret));
+ goto error;
+ }
+ print_uri_msg(&uri[0]);
+ } else {
+ ERR("Only net:// and file:// are supported. "
+ "Use -D or -U for more fine grained control");
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+error:
+ return ret;
+}
+
+/*
+ * Parse URI from string to lttng_uri object array.
+ */
+static ssize_t parse_uri_from_str(const char *str_uri, struct lttng_uri **uris)
+{
+ ssize_t size;
+
+ if (*uris != NULL) {
+ free(*uris);
+ }
+
+ size = uri_parse(str_uri, uris);
+ if (size < 1) {
+ ERR("Bad URI %s. Either the hostname or IP is invalid", str_uri);
+ size = -1;
+ }
+
+ return size;
+}
+
+/*
+ * Enable consumer command.
+ */
+static int enable_consumer(char *session_name)
+{
+ int ret = CMD_SUCCESS;
+ int run_enable_cmd = 1;
+ ssize_t size;
+ struct lttng_domain dom;
+ struct lttng_uri *uri = NULL;
+
+ memset(&dom, 0, sizeof(dom));
+
+ /* Create lttng domain */
+ if (opt_kernel) {
+ dom.type = LTTNG_DOMAIN_KERNEL;
+ } else if (opt_userspace) {
+ dom.type = LTTNG_DOMAIN_UST;
+ } else {
+ ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ handle = lttng_create_handle(session_name, &dom);
+ if (handle == NULL) {
+ ret = -1;
+ goto error;
+ }
+
+ /* Handle trailing arguments */
+ if (opt_uris_arg) {
+ size = parse_uri_from_str(opt_uris_arg, &uri);
+ if (size < 1) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ ret = set_consumer_arg_uris(uri, size);
+ if (ret < 0) {
+ goto free_uri;
+ }
+ }
+
+ /* Handling URIs (-U opt) */
+ if (opt_uris) {
+ size = parse_uri_from_str(opt_uris, &uri);
+ if (size < 1) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ ret = set_consumer_arg_uris(uri, size);
+ if (ret < 0) {
+ goto free_uri;
+ }
+
+ /* opt_enable will tell us to run or not the enable_consumer cmd. */
+ run_enable_cmd = 0;
+ }
+
+ /* Setting up control URI (-C opt) */
+ if (opt_ctrl_uris) {
+ size = parse_uri_from_str(opt_ctrl_uris, &uri);
+ if (size < 1) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ /* Set default port if none specified */
+ if (uri[0].port == 0) {
+ uri[0].port = DEFAULT_NETWORK_CONTROL_PORT;
+ }
+
+ uri[0].stype = LTTNG_STREAM_CONTROL;
+
+ ret = lttng_set_consumer_uri(handle, &uri[0]);
+ if (ret < 0) {
+ ERR("Failed to set control URI %s: %s", opt_ctrl_uris,
+ lttng_strerror(ret));
+ goto free_uri;
+ }
+ print_uri_msg(&uri[0]);
+
+ /* opt_enable will tell us to run or not the enable_consumer cmd. */
+ run_enable_cmd = 0;
+ }
+
+ /* Setting up data URI (-D opt) */
+ if (opt_data_uris) {
+ size = parse_uri_from_str(opt_data_uris, &uri);
+ if (size < 1) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ /* Set default port if none specified */
+ if (uri[0].port == 0) {
+ uri[0].port = DEFAULT_NETWORK_DATA_PORT;
+ }
+
+ uri[0].stype = LTTNG_STREAM_DATA;
+
+ ret = lttng_set_consumer_uri(handle, &uri[0]);
+ if (ret < 0) {
+ ERR("Failed to set data URI %s: %s", opt_data_uris,
+ lttng_strerror(ret));
+ goto free_uri;
+ }
+ print_uri_msg(&uri[0]);
+
+ /* opt_enable will tell us to run or not the enable_consumer cmd. */
+ run_enable_cmd = 0;
+ }
+
+ /* Enable consumer (-e opt) */
+ if (opt_enable || run_enable_cmd) {
+ ret = lttng_enable_consumer(handle);
+ if (ret < 0) {
+ ERR("Enabling consumer for session %s: %s", session_name,
+ lttng_strerror(ret));
+ if (ret == -LTTCOMM_ENABLE_CONSUMER_FAIL) {
+ ERR("Perhaps the session was previously started?");
+ }
+ goto free_uri;
+ }
+
+ MSG("Consumer enabled successfully");
+ }
+
+free_uri:
+ free(uri);
+
+error:
+ lttng_destroy_handle(handle);
+ return ret;
+}
+
+/*
+ * The 'enable-consumer <options>' first level command
+ *
+ * Returns one of the CMD_* result constants.
+ */
+int cmd_enable_consumer(int argc, const char **argv)
+{
+ int opt, ret = CMD_SUCCESS;
+ static poptContext pc;
+ char *session_name = NULL;
+
+ pc = poptGetContext(NULL, argc, argv, long_options, 0);
+ poptReadDefaultConfig(pc, 0);
+
+ while ((opt = poptGetNextOpt(pc)) != -1) {
+ switch (opt) {
+ case OPT_HELP:
+ usage(stdout);
+ goto end;
+ case OPT_LIST_OPTIONS:
+ list_cmd_options(stdout, long_options);
+ goto end;
+ default:
+ usage(stderr);
+ ret = CMD_UNDEFINED;
+ goto end;
+ }
+ }
+
+ opt_uris_arg = (char *) poptGetArg(pc);
+ DBG("URIs: %s", opt_uris_arg);
+
+ /* Get session name */
+ if (!opt_session_name) {
+ session_name = get_session_name();
+ if (session_name == NULL) {
+ ret = CMD_ERROR;
+ goto end;
+ }
+ } else {
+ session_name = opt_session_name;
+ }
+
+ ret = enable_consumer(session_name);
+
+end:
+ if (opt_session_name == NULL) {
+ free(session_name);
+ }
+
+ poptFreeContext(pc);
+ return ret;
+}
projects / lttng-tools.git / blobdiff