[libvirt] [libvirt-designer][PATCH 3/4] examples: Create an example of usage program
Michal Privoznik
mprivozn at redhat.com
Wed Sep 5 09:27:46 UTC 2012
---
.gitignore | 1 +
Makefile.am | 2 +-
configure.ac | 6 +-
examples/Makefile.am | 23 ++++
examples/virtxml.c | 334 ++++++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 364 insertions(+), 2 deletions(-)
create mode 100644 examples/Makefile.am
create mode 100644 examples/virtxml.c
diff --git a/.gitignore b/.gitignore
index b7ba45a..d570af8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,7 @@ Makefile.in
/config.log
/config.status
/configure
+/examples/virtxml
/libtool
/libvirt-designer-1.0.pc
/libvirt-designer.spec
diff --git a/Makefile.am b/Makefile.am
index b0f68c0..ab06626 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,5 @@
-SUBDIRS = libvirt-designer
+SUBDIRS = libvirt-designer examples
ACLOCAL_AMFLAGS = -I m4
diff --git a/configure.ac b/configure.ac
index 795990f..ebe7b35 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,6 +13,7 @@ AM_SILENT_RULES([yes])
LIBOSINFO_REQUIRED=0.0.5
LIBVIRT_GCONFIG_REQUIRED=0.0.9
GOBJECT_INTROSPECTION_REQUIRED=0.10.8
+LIBVIRT_REQUIRED=0.9.0
LIBVIRT_DESIGNER_MAJOR_VERSION=`echo $VERSION | awk -F. '{print $1}'`
LIBVIRT_DESIGNER_MINOR_VERSION=`echo $VERSION | awk -F. '{print $2}'`
@@ -40,6 +41,7 @@ LIBVIRT_DESIGNER_COMPILE_WARNINGS
PKG_CHECK_MODULES(LIBOSINFO, libosinfo-1.0 >= $LIBOSINFO_REQUIRED)
PKG_CHECK_MODULES(LIBVIRT_GCONFIG, libvirt-gconfig-1.0 >= $LIBVIRT_GCONFIG_REQUIRED)
+PKG_CHECK_MODULES(LIBVIRT, libvirt >= $LIBVIRT_REQUIRED)
LIBVIRT_DESIGNER_GETTEXT
LIBVIRT_DESIGNER_GTK_MISC
@@ -51,7 +53,8 @@ LIBVIRT_DESIGNER_INTROSPECTION
AC_OUTPUT(Makefile
libvirt-designer/Makefile
libvirt-designer.spec
- libvirt-designer-1.0.pc)
+ libvirt-designer-1.0.pc
+ examples/Makefile)
AC_MSG_NOTICE([])
AC_MSG_NOTICE([Configuration summary])
@@ -62,4 +65,5 @@ AC_MSG_NOTICE([ Libraries:])
AC_MSG_NOTICE([])
AC_MSG_NOTICE([ LIBOSINFO: $LIBOSINFO_CFLAGS $LIBOSINFO_LIBS])
AC_MSG_NOTICE([ LIBVIRT_GCONFIG: $LIBVIRT_GCONFIG_CFLAGS $LIBVIRT_GCONFIG_LIBS])
+AC_MSG_NOTICE([ LIBVIRT: $LIBVIRT_CFLAGS $LIBVIRT_LIBS])
AC_MSG_NOTICE([])
diff --git a/examples/Makefile.am b/examples/Makefile.am
new file mode 100644
index 0000000..cc2b997
--- /dev/null
+++ b/examples/Makefile.am
@@ -0,0 +1,23 @@
+INCLUDES = \
+ -I$(top_builddir)/libvirt-designer \
+ -I$(top_srcdir)
+
+virtxml_LDADD = \
+ $(top_builddir)/libvirt-designer/libvirt-designer-1.0.la
+
+virtxml_CFLAGS = \
+ -I$(top_srcdir) \
+ $(COVERAGE_CFLAGS) \
+ -I$(top_srcdir) \
+ $(LIBOSINFO_CFLAGS) \
+ $(LIBVIRT_GCONFIG_CFLAGS) \
+ $(WARN_CFLAGS2) \
+ $(LIBVIRT_CFLAGS) \
+ $(NULL)
+
+virtxml_LDFLAGS = \
+ $(LIBOSINFO_LIBS) \
+ $(LIBVIRT_GCONFIG_LIBS) \
+ $(LIBVIRT_LIBS)
+
+bin_PROGRAMS = virtxml
diff --git a/examples/virtxml.c b/examples/virtxml.c
new file mode 100644
index 0000000..36bc3bb
--- /dev/null
+++ b/examples/virtxml.c
@@ -0,0 +1,334 @@
+/*
+ * virtxml.c: produce an domain XML
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Author: Michal Privoznik <mprivozn at redhat.com>
+ */
+
+#include <config.h>
+#include <libvirt-designer/libvirt-designer.h>
+#include <libvirt/libvirt.h>
+#include <libvirt/virterror.h>
+
+#include <stdio.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#define print_error(...) \
+ print_error_impl(__FUNCTION__, __LINE__, __VA_ARGS__)
+
+static void
+print_error_impl(const char *funcname,
+ size_t linenr,
+ const char *fmt, ...)
+{
+ va_list args;
+
+ fprintf(stderr, "Error in %s:%zu ", funcname, linenr);
+ va_start(args, fmt);
+ vfprintf(stderr, fmt, args);
+ va_end(args);
+ fprintf(stderr,"\n");
+}
+
+static void
+print_usage(const char *progname)
+{
+ printf("\nUsage: %s options ...\n"
+ " options:\n"
+ " -h | --help print this help\n"
+ " -c | --connect=URI libvirt connection URI used \n"
+ " for querying capabilities\n"
+ " --list-os list IDs of known OSes\n"
+ " --list-platform list IDs of known hypervisors\n"
+ " -o | --os=OS set domain OS\n"
+ " -p | --platform=PLATFORM set hypervisor under which \n"
+ " domain will be running\n"
+ " -a | --architecture=ARCH set domain architecture\n"
+ " -d | --disk=PATH[,FORMAT] add disk to domain with PATH being \n"
+ " source and FORMAT is its format\n",
+ progname);
+}
+
+static OsinfoDb *
+get_default_osinfo_db(void)
+{
+ GError *err = NULL;
+ OsinfoLoader *loader = NULL;
+ OsinfoDb *ret = NULL;
+
+ loader = osinfo_loader_new();
+ osinfo_loader_process_default_path(loader, &err);
+ if (err) {
+ print_error("Unable to load default libosinfo DB: %s", err->message);
+ goto cleanup;
+ }
+
+ ret = osinfo_loader_get_db(loader);
+ g_object_ref(ret);
+
+cleanup:
+ g_object_unref(loader);
+ return ret;
+}
+
+static int
+print_oses(void)
+{
+ OsinfoDb *db = get_default_osinfo_db();
+ OsinfoOsList *list;
+ int i;
+
+ if (!db)
+ return EXIT_FAILURE;
+
+ list = osinfo_db_get_os_list(db);
+
+ printf(" Operating System ID\n"
+ "-----------------------\n");
+ for (i = 0 ; i < osinfo_list_get_length(OSINFO_LIST(list)) ; i++) {
+ OsinfoOs *ent = OSINFO_OS(osinfo_list_get_nth(OSINFO_LIST(list), i));
+ const char *id = osinfo_entity_get_param_value(OSINFO_ENTITY(ent),
+ "short-id");
+ if (!id)
+ id = osinfo_entity_get_param_value(OSINFO_ENTITY(ent),
+ OSINFO_ENTITY_PROP_ID);
+ printf("%s\n", id);
+ }
+
+ g_object_unref(list);
+ g_object_unref(db);
+
+ return EXIT_SUCCESS;
+}
+
+static int
+print_platforms(void)
+{
+ OsinfoDb *db = get_default_osinfo_db();
+ OsinfoPlatformList *list;
+ int i;
+
+ if (!db)
+ return EXIT_FAILURE;
+
+ list = osinfo_db_get_platform_list(db);
+
+ printf(" Platform ID\n"
+ "---------------\n");
+ for (i = 0; i < osinfo_list_get_length(OSINFO_LIST(list)); i++) {
+ OsinfoPlatform *ent = OSINFO_PLATFORM(osinfo_list_get_nth(OSINFO_LIST(list), i));
+ const char *id = osinfo_entity_get_param_value(OSINFO_ENTITY(ent),
+ "short-id");
+ if (!id)
+ id = osinfo_entity_get_param_value(OSINFO_ENTITY(ent),
+ OSINFO_ENTITY_PROP_ID);
+
+ printf("%s\n", id);
+ }
+
+ g_object_unref(list);
+ g_object_unref(db);
+
+ return EXIT_SUCCESS;
+}
+
+static void
+add_disk(gpointer data,
+ gpointer user_data)
+{
+ GVirDesignerDomain *domain = (GVirDesignerDomain *) user_data;
+ char *path = (char *) data;
+ char *format = NULL;
+ struct stat buf;
+ GError *error = NULL;
+
+ format = strchr(path, ',');
+ if (format) {
+ *format = '\0';
+ format++;
+ }
+
+ if (!path || !strlen(path)) {
+ print_error("No path provided");
+ return;
+ }
+
+ if (!stat(path, &buf) &&
+ !S_ISREG(buf.st_mode)) {
+ gvir_designer_domain_add_disk_device(domain, path, &error);
+ } else {
+ gvir_designer_domain_add_disk_file(domain, path, format, &error);
+ }
+
+ if (error)
+ print_error("%s", error->message);
+
+}
+
+#define CHECK_ERROR \
+ if (error) { \
+ print_error("%s", error->message); \
+ goto cleanup; \
+ }
+
+int
+main(int argc, char *argv[])
+{
+ int ret = EXIT_FAILURE;
+ GError *error = NULL;
+ OsinfoOs *os = NULL;
+ OsinfoPlatform *platform = NULL;
+ GVirConfigCapabilities *caps = NULL;
+ GVirConfigDomain *config = NULL;
+ GVirDesignerDomain *domain = NULL;
+ virConnectPtr conn = NULL;
+ char *caps_str = NULL;
+ gchar *xml = NULL;
+ char *os_str = NULL;
+ char *platform_str = NULL;
+ char *arch_str = NULL;
+ char *connect_uri = NULL;
+ GList *disk_str_list = NULL;
+ int arg;
+
+ struct option opt[] = {
+ {"help", no_argument, NULL, 'h'},
+ {"connect", required_argument, NULL, 'c'},
+ {"list-os", no_argument, NULL, 'O'},
+ {"list-platform", no_argument, NULL, 'P'},
+ {"os", required_argument, NULL, 'o'},
+ {"platform", required_argument, NULL, 'p'},
+ {"architecture", required_argument, NULL, 'a'},
+ {"disk", required_argument, NULL, 'd'},
+ {NULL, 0, NULL, 0}
+ };
+
+ if (!gvir_designer_init_check(&argc, &argv, NULL))
+ return EXIT_FAILURE;
+
+ /* Standard (non-command) options. The leading + ensures that no
+ * argument reordering takes place, so that command options are
+ * not confused with top-level virsh options. */
+ while ((arg = getopt_long(argc, argv, "+hc:o:p:a:d:", opt, NULL)) != -1) {
+ char *progname;
+ switch (arg) {
+ case 'h':
+ if (!(progname = strrchr(argv[0], '/')))
+ progname = argv[0];
+ else
+ progname++;
+
+ print_usage(progname);
+ exit(EXIT_SUCCESS);
+ break;
+ case 'c':
+ connect_uri = optarg;
+ break;
+ case 'O':
+ ret = print_oses();
+ exit(ret);
+ break;
+ case 'P':
+ ret = print_platforms();
+ exit(ret);
+ break;
+ case 'o':
+ if (os_str) {
+ print_error("Os already set to '%s'", os_str);
+ exit(EXIT_FAILURE);
+ }
+ os_str = optarg;
+ break;
+ case 'p':
+ if (platform_str) {
+ print_error("Platform already set to '%s'", platform_str);
+ exit(EXIT_FAILURE);
+ }
+ platform_str = optarg;
+ break;
+ case 'a':
+ if (arch_str) {
+ print_error("Architecture already set to '%s'", arch_str);
+ exit(EXIT_FAILURE);
+ }
+ arch_str = optarg;
+ break;
+ case 'd':
+ disk_str_list = g_list_append(disk_str_list, optarg);
+ break;
+ default:
+ print_error("Something has gone tragically wrong");
+ case '?':
+ /* getopt_long already reported error */
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ if (!os_str) {
+ print_error("Operating system was not specified");
+ exit(EXIT_FAILURE);
+ }
+ if (!platform_str) {
+ print_error("Platform was not specified");
+ exit(EXIT_FAILURE);
+ }
+
+ conn = virConnectOpenAuth(connect_uri, virConnectAuthPtrDefault, VIR_CONNECT_RO);
+ if (!conn) {
+ print_error("Unable to connect to libvirt");
+ return EXIT_FAILURE;
+ }
+
+ if ((caps_str = virConnectGetCapabilities(conn)) == NULL) {
+ print_error("failed to get capabilities");
+ goto cleanup;
+ }
+
+ os = osinfo_os_new(os_str);
+ platform = osinfo_platform_new(platform_str);
+ caps = gvir_config_capabilities_new_from_xml(caps_str, NULL);
+
+ domain = gvir_designer_domain_new(os, platform, caps);
+
+ gvir_designer_domain_setup_machine(domain, &error);
+ CHECK_ERROR;
+
+ if (arch_str) {
+ gvir_designer_domain_setup_container_full(domain, arch_str, &error);
+ CHECK_ERROR;
+ }
+
+ g_list_foreach(disk_str_list, add_disk, domain);
+
+ config = gvir_designer_domain_get_config(domain);
+ xml = gvir_config_object_to_xml(GVIR_CONFIG_OBJECT(config));
+
+ g_printf("%s\n", xml);
+
+ ret = EXIT_SUCCESS;
+
+cleanup:
+ virConnectClose(conn);
+ return ret;
+}
--
1.7.8.6
More information about the libvir-list
mailing list