6:36 a.m.
On 11/25/2016 08:12 AM, Erik Skultety wrote:
Provide a simple C example demonstrating the use of both query APIs
as well as
setter APIs.
Signed-off-by: Erik Skultety <eskultet(a)redhat.com>
---
.gitignore | 1 +
examples/Makefile.am | 3 +-
examples/admin/logging.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 105 insertions(+), 1 deletion(-)
create mode 100644 examples/admin/logging.c
diff --git a/.gitignore b/.gitignore
index 879ec24..984ad07 100644
--- a/.gitignore
+++ b/.gitignore
@@ -79,6 +79,7 @@
/examples/admin/client_limits
/examples/admin/list_clients
/examples/admin/list_servers
+/examples/admin/logging
/examples/admin/threadpool_params
/examples/object-events/event-test
/examples/dominfo/info1
diff --git a/examples/Makefile.am b/examples/Makefile.am
index 7cb8258..2956e14 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -43,7 +43,7 @@ noinst_PROGRAMS=dominfo/info1 dommigrate/dommigrate domsuspend/suspend
\
domtop/domtop hellolibvirt/hellolibvirt object-events/event-test \
openauth/openauth rename/rename admin/list_servers admin/list_clients \
admin/threadpool_params admin/client_limits admin/client_info \
- admin/client_close
+ admin/client_close admin/logging
dominfo_info1_SOURCES = dominfo/info1.c
dommigrate_dommigrate_SOURCES = dommigrate/dommigrate.c
@@ -65,6 +65,7 @@ admin_threadpool_params_SOURCES = admin/threadpool_params.c
admin_client_limits_SOURCES = admin/client_limits.c
admin_client_info_SOURCES = admin/client_info.c
admin_client_close_SOURCES = admin/client_close.c
+admin_logging_SOURCES = admin/logging.c
if WITH_APPARMOR_PROFILES
apparmordir = $(sysconfdir)/apparmor.d/
diff --git a/examples/admin/logging.c b/examples/admin/logging.c
new file mode 100644
index 0000000..e28c7d5
--- /dev/null
+++ b/examples/admin/logging.c
@@ -0,0 +1,102 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<stdbool.h>
+
+#include "config.h"
+#include<unistd.h>
+#include<libvirt/libvirt-admin.h>
+#include<libvirt/virterror.h>
+
+static void printHelp(const char *argv0)
+{
+ fprintf(stderr,
+ ("Usage:\n"
+ " %s [options]\n"
+ "\n"
+ "Options:\n"
+ " -h Print this message.\n"
+ " -o [string] Specify new log outputs.\n"
+ " -f [string] Specify new log filters.\n"
+ "\n"),
+ argv0);
+}
+
+int main(int argc, char **argv)
+{
+ int ret, c;
+ virAdmConnectPtr conn = NULL;
+ char *get_outputs = NULL;
+ char *get_filters = NULL;
+ const char *set_outputs = NULL;
+ const char *set_filters = NULL;
+
+ ret = c = -1;
+ opterr = 0;
+
+ while ((c = getopt(argc, argv, ":hpo:f:")) > 0) {
+ switch (c) {
+ case 'h':
+ printHelp(argv[0]);
+ exit(EXIT_SUCCESS);
+ case 'o':
+ set_outputs = optarg;
+ break;
+ case 'f':
+ set_filters = optarg;
+ break;
+ case ':':
+ fprintf(stderr, "Missing argument for option -%c\n", optopt);
+ exit(EXIT_FAILURE);
+ case '?':
+ fprintf(stderr, "Unrecognized option '-%c'\n", optopt);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ /* first, open a connection to the daemon */
+ if (!(conn = virAdmConnectOpen(NULL, 0)))
+ goto cleanup;
+
+ /* get the currently defined log outputs and filters */
+ if (virAdmConnectGetLoggingOutputs(conn, &get_outputs, 0) < 0 ||
+ virAdmConnectGetLoggingFilters(conn, &get_filters, 0) < 0)
+ goto cleanup;
+
+ fprintf(stdout,
+ "Current settings:\n"
+ " outputs: %s\n"
+ " filters: %s\n"
+ "\n",
+ get_outputs, get_filters ? get_filters : "None");
+
+ free(get_outputs);
+ free(get_filters);
If run without any arguments, we should just stop here.
e.g. if set_outputs and set_filters are both NULL, just jump to the ret = 0;
ACK -
John
+
+ /* now, try to change the redefine the current log output and filters */
+ if (virAdmConnectSetLoggingOutputs(conn, set_outputs, 0) < 0)
+ goto cleanup;
+
+ if (virAdmConnectSetLoggingFilters(conn, set_filters, 0) < 0)
+ goto cleanup;
+
+ /* get the currently defined log outputs and filters */
+ if (virAdmConnectGetLoggingOutputs(conn, &get_outputs, 0) < 0 ||
+ virAdmConnectGetLoggingFilters(conn, &get_filters, 0) < 0)
+ goto cleanup;
+
+ fprintf(stdout,
+ "New settings:\n"
+ " outputs: %s\n"
+ " filters: %s\n"
+ "\n",
+ get_outputs ? get_outputs : "Default",
+ get_filters ? get_filters : "None");
+
+ free(get_outputs);
+ free(get_filters);
+
+ ret = 0;
+ cleanup:
+ virAdmConnectClose(conn);
+ return ret;
+}