[lttng-dev] [PATCH lttng-tools 2/5] Tests: Add a health check utility program

[Mathieu Desnoyers]

* Christian Babeux (christian.babeux at efficios.com) wrote:
> The health_check program is a simple utility to query the health
> status of the different threads of the sessiond.

do we want to call it lttng-health-check and install it in the system ?

Mathieu

> 
> Sample output:
> 
> > ./health_check
> Health check cmd: 0
> Health check app. manage: 0
> Health check app. registration: 0
> Health check kernel: 0
> Health check consumer: 0
> 
> The return code is encoded to indicate which thread has failed.
> 
> Signed-off-by: Christian Babeux <christian.babeux at efficios.com>
> ---
>  tests/tools/health/Makefile.am    | 20 +++++++++++
>  tests/tools/health/health_check.c | 73 +++++++++++++++++++++++++++++++++++++++
>  2 files changed, 93 insertions(+)
>  create mode 100644 tests/tools/health/Makefile.am
>  create mode 100644 tests/tools/health/health_check.c
> 
> diff --git a/tests/tools/health/Makefile.am b/tests/tools/health/Makefile.am
> new file mode 100644
> index 0000000..09573db
> --- /dev/null
> +++ b/tests/tools/health/Makefile.am
> @@ -0,0 +1,20 @@
> +AM_CFLAGS = -I. -O2 -g -I../../../include
> +AM_LDFLAGS =
> +
> +if LTTNG_TOOLS_BUILD_WITH_LIBDL
> +AM_LDFLAGS += -ldl
> +endif
> +if LTTNG_TOOLS_BUILD_WITH_LIBC_DL
> +AM_LDFLAGS += -lc
> +endif
> +
> +UTILS=
> +
> +noinst_PROGRAMS = health_check
> +
> +health_check_SOURCES = health_check.c $(UTILS)
> +health_check_LDADD = $(top_builddir)/src/lib/lttng-ctl/liblttng-ctl.la \
> +		     $(top_builddir)/src/common/libcommon.la
> +
> +noinst_SCRIPTS =
> +EXTRA_DIST =
> diff --git a/tests/tools/health/health_check.c b/tests/tools/health/health_check.c
> new file mode 100644
> index 0000000..3eef110
> --- /dev/null
> +++ b/tests/tools/health/health_check.c
> @@ -0,0 +1,73 @@
> +/*
> + * Copyright (C) 2012 - Christian Babeux <christian.babeux at 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.
> + */
> +
> +#include <stdio.h>
> +
> +#include "lttng/lttng.h"
> +
> +#define HEALTH_CMD_FAIL     (1 << 0)
> +#define HEALTH_APP_MNG_FAIL (1 << 1)
> +#define HEALTH_APP_REG_FAIL (1 << 2)
> +#define HEALTH_KERNEL_FAIL  (1 << 3)
> +#define HEALTH_CSMR_FAIL    (1 << 4)
> +
> +int main(int argc, char *argv[])
> +{
> +	int health = -1;
> +	int status = 0;
> +
> +	/* Command thread */
> +	health = lttng_health_check(LTTNG_HEALTH_CMD);
> +	printf("Health check cmd: %d\n", health);
> +
> +	if (health) {
> +		status |= HEALTH_CMD_FAIL;
> +	}
> +
> +	/* App manage thread */
> +	health = lttng_health_check(LTTNG_HEALTH_APP_MANAGE);
> +	printf("Health check app. manage: %d\n", health);
> +
> +	if (health) {
> +		status |= HEALTH_APP_MNG_FAIL;
> +	}
> +	/* App registration thread */
> +	health = lttng_health_check(LTTNG_HEALTH_APP_REG);
> +	printf("Health check app. registration: %d\n", health);
> +
> +	if (health) {
> +		status |= HEALTH_APP_REG_FAIL;
> +	}
> +
> +	/* Kernel thread */
> +	health = lttng_health_check(LTTNG_HEALTH_KERNEL);
> +	printf("Health check kernel: %d\n", health);
> +
> +	if (health) {
> +		status |= HEALTH_KERNEL_FAIL;
> +	}
> +
> +	/* Consumer thread */
> +	health = lttng_health_check(LTTNG_HEALTH_CONSUMER);
> +	printf("Health check consumer: %d\n", health);
> +
> +	if (health) {
> +		status |= HEALTH_CSMR_FAIL;
> +	}
> +
> +	return status;
> +}
> -- 
> 1.7.12
> 
> 
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-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com