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author | Colin Walters <walters@verbum.org> | 2013-04-23 16:50:02 -0400 |
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committer | Colin Walters <walters@verbum.org> | 2013-04-23 23:00:55 +0100 |
commit | 51736db5f49b4b798fd2f9d0ccb8eff453105162 (patch) | |
tree | 0b3d31830d0d02e4fef943971ee80bac653c58de | |
parent | e5c9386b64658b8d3fa87f820d703f2bd188535e (diff) | |
download | libgsystem-51736db5f49b4b798fd2f9d0ccb8eff453105162.tar.gz |
gsystem-log.h: New structured logging API
This is a wrapper for systemd-journal that's introspectable.
-rw-r--r-- | Makefile-libgsystem.am | 2 | ||||
-rw-r--r-- | gsystem-log.c | 78 | ||||
-rw-r--r-- | gsystem-log.h | 33 | ||||
-rw-r--r-- | libgsystem.h | 1 |
4 files changed, 114 insertions, 0 deletions
diff --git a/Makefile-libgsystem.am b/Makefile-libgsystem.am index 83e8928..9e027ae 100644 --- a/Makefile-libgsystem.am +++ b/Makefile-libgsystem.am @@ -26,6 +26,8 @@ libgsystem_la_SOURCES = \ $(libgsystem_srcpath)/gsystem-file-utils.c \ $(libgsystem_srcpath)/gsystem-shutil.h \ $(libgsystem_srcpath)/gsystem-shutil.c \ + $(libgsystem_srcpath)/gsystem-log.h \ + $(libgsystem_srcpath)/gsystem-log.c \ $(libgsystem_srcpath)/gsystem-subprocess-context.h \ $(libgsystem_srcpath)/gsystem-subprocess-context-private.h \ $(libgsystem_srcpath)/gsystem-subprocess-context.c \ diff --git a/gsystem-log.c b/gsystem-log.c new file mode 100644 index 0000000..587f86a --- /dev/null +++ b/gsystem-log.c @@ -0,0 +1,78 @@ +/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2012 William Jon McCann <mccann@redhat.com> + * Copyright (C) 2012 Colin Walters <walters@verbum.org> + * + * 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 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, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include "config.h" + +#ifndef _GNU_SOURCE +#define _GNU_SOURCE +#endif + +#ifdef ENABLE_SYSTEMD_JOURNAL +#include <systemd/sd-journal.h> +#endif +#include <glib-unix.h> + +#include "libgsystem.h" + +/** + * gs_log_structured: + * @message: Text message to send + * @keys: (allow-none) (array zero-terminated=1) (element-type utf8): Optional structured data + * + * Log structured data in an operating-system specific fashion. The + * parameter @opts should be an array of UTF-8 KEY=VALUE strings. + * This function does not support binary data. See + * http://www.freedesktop.org/software/systemd/man/systemd.journal-fields.html + * for more information about fields that can be used on a systemd + * system. + */ +void +gs_log_structured (const char *message, + const char *const *keys) +{ +#ifdef ENABLE_SYSTEMD_JOURNAL + const char *const*iter; + char *msgkey; + guint i, n_opts; + struct iovec *iovs; + + for (n_opts = 0, iter = keys; *iter; iter++, n_opts++) + ; + + n_opts++; /* Add one for MESSAGE= */ + iovs = g_alloca (sizeof (struct iovec) * n_opts); + + for (i = 0, iter = keys; *iter; iter++, i++) { + iovs[i].iov_base = (char*)keys[i]; + iovs[i].iov_len = strlen (keys[i]); + } + g_assert(i == n_opts-1); + msgkey = g_strconcat ("MESSAGE=", message, NULL); + iovs[i].iov_base = msgkey; + iovs[i].iov_len = strlen (msgkey); + + sd_journal_sendv (iovs, n_opts); + + g_free (msgkey); +#else + g_print ("%s\n", message); +#endif +} diff --git a/gsystem-log.h b/gsystem-log.h new file mode 100644 index 0000000..9f3f9fd --- /dev/null +++ b/gsystem-log.h @@ -0,0 +1,33 @@ +/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2013 Colin Walters <walters@verbum.org>. + * + * 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 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, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __GSYSTEM_LOG_H__ +#define __GSYSTEM_LOG_H__ + +#include <gio/gio.h> + +G_BEGIN_DECLS + +void gs_log_structured (const char *message, + const char *const *keys); + +G_END_DECLS + +#endif diff --git a/libgsystem.h b/libgsystem.h index 5871a4b..d2fa608 100644 --- a/libgsystem.h +++ b/libgsystem.h @@ -29,6 +29,7 @@ G_BEGIN_DECLS #include <gsystem-file-utils.h> #include <gsystem-shutil.h> #include <gsystem-subprocess.h> +#include <gsystem-log.h> G_END_DECLS |