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@xxxxxxxxxx>
> ---
> .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;
> +}
>
--
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