projects/pystatgrab/_statgrab.pyx

#
# i-scream central monitoring system
# http://www.i-scream.org
# Copyright (C) 2000-2004 i-scream
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
#
# $Id$
#

ctypedef long time_t

cdef extern from "statgrab.h":
    ctypedef struct cpu_states_t:
        long long user
        long long kernel
        long long idle
        long long iowait
        long long swap
        long long nice
        long long total
        time_t systime

    ctypedef struct cpu_percent_t:
        float user
        float kernel
        float idle
        float iowait
        float swap
        float nice
        time_t time_taken

    ctypedef struct mem_stat_t:
        long long total
        long long free
        long long used
        long long cache

    ctypedef struct load_stat_t:
        double min1
        double min5
        double min15

    ctypedef struct user_stat_t:
        char *name_list
        int num_entries

    ctypedef struct swap_stat_t:
        long long total
        long long used
        long long free

    ctypedef struct general_stat_t:
        char *os_name
        char *os_release
        char *os_version
        char *platform
        char *hostname
        time_t uptime

    ctypedef struct disk_stat_t:
        char *device_name
        char *fs_type
        char *mnt_point
        long long size
        long long used
        long long avail
        long long total_inodes
        long long used_inodes
        long long free_inodes

    ctypedef struct diskio_stat_t:
        char *disk_name
        long long read_bytes
        long long write_bytes
        time_t systime

    ctypedef struct process_stat_t:
        int total
        int running
        int sleeping
        int stopped
        int zombie

    ctypedef struct network_stat_t:
        char *interface_name
        long long tx
        long long rx
        time_t systime

    ctypedef struct page_stat_t:
        long long pages_pagein
        long long pages_pageout
        time_t systime

    cdef extern cpu_states_t *get_cpu_totals()
    cdef extern cpu_states_t *get_cpu_diff()
    cdef extern cpu_percent_t *cpu_percent_usage()
    cdef extern mem_stat_t *get_memory_stats()
    cdef extern load_stat_t *get_load_stats()
    cdef extern user_stat_t *get_user_stats()
    cdef extern swap_stat_t *get_swap_stats()
    cdef extern general_stat_t *get_general_stats()
    cdef extern disk_stat_t *get_disk_stats(int *entries)
    cdef extern diskio_stat_t *get_diskio_stats(int *entries)
    cdef extern diskio_stat_t *get_diskio_stats_diff(int *entries)
    cdef extern process_stat_t *get_process_stats()
    cdef extern network_stat_t *get_network_stats(int *entries)
    cdef extern network_stat_t *get_network_stats_diff(int *entries)
    cdef extern page_stat_t *get_page_stats()
    cdef extern page_stat_t *get_page_stats_diff()
    cdef extern int statgrab_init()
    cdef extern int statgrab_drop_privileges()


class Result:
    def __init__(self, attrs):
        self.attrs = attrs
        for attr in attrs:
            setattr(self, attr, attrs[attr])
    def __getitem__(self, item):
        return getattr(self, item)
    def __repr__(self):
        return str(self.attrs)

class StatgrabException:
    def __init__(self, value):
        self.value = value
    def __str__(self):
        return repr(self.value)


def py_get_cpu_totals():
    cdef cpu_states_t *s
    s = get_cpu_totals()
    if s == NULL:
        raise StatgrabException, 'get_cpu_totals() returned NULL'
    return Result(
        {'user': s.user,
         'kernel': s.kernel,
         'idle': s.idle,
         'iowait': s.iowait,
         'swap': s.swap,
         'nice': s.nice,
         'total': s.total,
         'systime': s.systime,
        }
    )

def py_get_cpu_diff():
    cdef cpu_states_t *s
    s = get_cpu_diff()
    if s == NULL:
        raise StatgrabException, 'get_cpu_diff() returned NULL'
    return Result(
        {'user': s.user,
         'kernel': s.kernel,
         'idle': s.idle,
         'iowait': s.iowait,
         'swap': s.swap,
         'nice': s.nice,
         'total': s.total,
         'systime': s.systime,
        }
    )

def py_cpu_percent_usage():
    cdef cpu_percent_t *s
    s = cpu_percent_usage()
    if s == NULL:
        raise StatgrabException, 'cpu_percent_usage() returned NULL'
    return Result(
        {'user': s.user,
         'kernel': s.kernel,
         'idle': s.idle,
         'iowait': s.iowait,
         'swap': s.swap,
         'nice': s.nice,
         'time_taken': s.time_taken,
        }
    )

def py_get_memory_stats():
    cdef mem_stat_t *s
    s = get_memory_stats()
    if s == NULL:
        raise StatgrabException, 'get_memory_stats() returned NULL'
    return Result(
        {'total': s.total,
         'used': s.used,
         'free': s.free,
         'cache': s.cache,
        }
    )

def py_get_load_stats():
    cdef load_stat_t *s
    s = get_load_stats()
    if s == NULL:
        raise StatgrabException, 'get_load_stats() returned NULL'
    return Result(
        {'min1': s.min1,
         'min5': s.min5,
         'min15': s.min15,
        }
    )

def py_get_user_stats():
    cdef user_stat_t *s
    s = get_user_stats()
    if s == NULL:
        raise StatgrabException, 'get_user_stats() returned NULL'
    return Result(
        {'name_list': s.name_list,
         'num_entries': s.num_entries,
        }
    )

def py_get_swap_stats():
    cdef swap_stat_t *s
    s = get_swap_stats()
    if s == NULL:
        raise StatgrabException, 'get_swap_stats() returned NULL'
    return Result(
        {'total': s.total,
         'used': s.used,
         'free': s.free,
        }
    )

def py_get_general_stats():
    cdef general_stat_t *s
    s = get_general_stats()
    if s == NULL:
        raise StatgrabException, 'get_general_stats() returned NULL'
    return Result(
        {'os_name': s.os_name,
         'os_release': s.os_release,
         'os_version': s.os_version,
         'platform': s.platform,
         'hostname': s.hostname,
         'uptime': s.uptime,
        }
    )

def py_get_disk_stats():
    cdef disk_stat_t *s
    cdef int entries
    s = get_disk_stats(&entries)
    if s == NULL:
        raise StatgrabException, 'get_disk_stats() returned NULL'
    list = [entries]
    for i from 0 <= i < entries:
        list.append(Result(
            {'device_name': s.device_name,
             'fs_type': s.fs_type,
             'mnt_point': s.mnt_point,
             'size': s.size,
             'used': s.used,
             'avail': s.avail,
             'total_inodes': s.total_inodes,
             'used_inodes': s.used_inodes,
             'free_inodes': s.free_inodes,
            }
        ))
        s = s + 1
    return list

def py_get_diskio_stats():
    cdef diskio_stat_t *s
    cdef int entries
    s = get_diskio_stats(&entries)
    if s == NULL:
        raise StatgrabException, 'get_diskio_stats() returned NULL'
    list = [entries]
    for i from 0 <= i < entries:
        list.append(Result(
            {'disk_name': s.disk_name,
             'read_bytes': s.read_bytes,
             'write_bytes': s.write_bytes,
             'systime': s.systime,
            }
        ))
        s = s + 1
    return list

def py_get_diskio_stats_diff():
    cdef diskio_stat_t *s
    cdef int entries
    s = get_diskio_stats_diff(&entries)
    if s == NULL:
        raise StatgrabException, 'get_diskio_stats_diff() returned NULL'
    list = [entries]
    for i from 0 <= i < entries:
        list.append(Result(
            {'disk_name': s.disk_name,
             'read_bytes': s.read_bytes,
             'write_bytes': s.write_bytes,
             'systime': s.systime,
            }
        ))
        s = s + 1
    return list

def py_get_process_stats():
    cdef process_stat_t *s
    s = get_process_stats()
    if s == NULL:
        raise StatgrabException, 'get_process_stats() returned NULL'
    return Result(
        {'total': s.total,
         'running': s.running,
         'sleeping': s.sleeping,
         'stopped': s.stopped,
         'zombie': s.zombie,
        }
    )

def py_get_network_stats():
    cdef network_stat_t *s
    cdef int entries
    s = get_network_stats(&entries)
    if s == NULL:
        raise StatgrabException, 'get_network_stats() returned NULL'
    list = [entries]
    for i from 0 <= i < entries:
        list.append(Result(
            {'interface_name': s.interface_name,
             'tx': s.tx,
             'rx': s.rx,
             'systime': s.systime,
            }
        ))
        s = s + 1
    return list

def py_get_network_stats_diff():
    cdef network_stat_t *s
    cdef int entries
    s = get_network_stats_diff(&entries)
    if s == NULL:
        raise StatgrabException, 'get_network_stats_diff() returned NULL'
    list = [entries]
    for i from 0 <= i < entries:
        list.append(Result(
            {'interface_name': s.interface_name,
             'tx': s.tx,
             'rx': s.rx,
             'systime': s.systime,
            }
        ))
        s = s + 1
    return list

def py_get_page_stats():
    cdef page_stat_t *s
    s = get_page_stats()
    if s == NULL:
        raise StatgrabException, 'get_page_stats() returned NULL'
    return Result(
        {'pages_pagein': s.pages_pagein,
         'pages_pageout': s.pages_pageout,
        }
    )

def py_get_page_stats_diff():
    cdef page_stat_t *s
    s = get_page_stats_diff()
    if s == NULL:
        raise StatgrabException, 'get_page_stats_diff() returned NULL'
    return Result(
        {'pages_pagein': s.pages_pagein,
         'pages_pageout': s.pages_pageout,
        }
    )

def py_statgrab_init():
    return statgrab_init()

def py_statgrab_drop_privileges():
    return statgrab_drop_privileges()
Revision:	1.3
Committed:	Mon Feb 9 23:07:25 2004 UTC (20 years, 3 months ago) by tdb
Branch:	MAIN
Changes since 1.2:	+59 -1 lines
Log Message:	Add error checking to the python bindings. They previously didn't check for a NULL response from the libstatgrab functions - which resulted in python core dumping. It now raises an exception instead. Also add a first stab at a setup.py so people can quickly build/install this extension if they want.
#	User	Rev	Content
1	tdb	1.3	#
2			# i-scream central monitoring system
3			# http://www.i-scream.org
4			# Copyright (C) 2000-2004 i-scream
5			#
6			# This program is free software; you can redistribute it and/or
7			# modify it under the terms of the GNU General Public License
8			# as published by the Free Software Foundation; either version 2
9			# of the License, or (at your option) any later version.
10			#
11			# This program is distributed in the hope that it will be useful,
12			# but WITHOUT ANY WARRANTY; without even the implied warranty of
13			# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			# GNU General Public License for more details.
15			#
16			# You should have received a copy of the GNU General Public License
17			# along with this program; if not, write to the Free Software
18			# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19			#
20			# $Id$
21			#
22	tdb	1.1
23			ctypedef long time_t
24
25			cdef extern from "statgrab.h":
26			ctypedef struct cpu_states_t:
27			long long user
28			long long kernel
29			long long idle
30			long long iowait
31			long long swap
32			long long nice
33			long long total
34			time_t systime
35
36			ctypedef struct cpu_percent_t:
37			float user
38			float kernel
39			float idle
40			float iowait
41			float swap
42			float nice
43			time_t time_taken
44
45			ctypedef struct mem_stat_t:
46			long long total
47			long long free
48			long long used
49			long long cache
50
51			ctypedef struct load_stat_t:
52			double min1
53			double min5
54			double min15
55
56			ctypedef struct user_stat_t:
57			char *name_list
58			int num_entries
59
60			ctypedef struct swap_stat_t:
61			long long total
62			long long used
63			long long free
64
65			ctypedef struct general_stat_t:
66			char *os_name
67			char *os_release
68			char *os_version
69			char *platform
70			char *hostname
71			time_t uptime
72
73			ctypedef struct disk_stat_t:
74			char *device_name
75			char *fs_type
76			char *mnt_point
77			long long size
78			long long used
79			long long avail
80			long long total_inodes
81			long long used_inodes
82			long long free_inodes
83
84			ctypedef struct diskio_stat_t:
85			char *disk_name
86			long long read_bytes
87			long long write_bytes
88			time_t systime
89
90			ctypedef struct process_stat_t:
91			int total
92			int running
93			int sleeping
94			int stopped
95			int zombie
96
97			ctypedef struct network_stat_t:
98			char *interface_name
99			long long tx
100			long long rx
101			time_t systime
102
103			ctypedef struct page_stat_t:
104			long long pages_pagein
105			long long pages_pageout
106			time_t systime
107
108			cdef extern cpu_states_t *get_cpu_totals()
109			cdef extern cpu_states_t *get_cpu_diff()
110			cdef extern cpu_percent_t *cpu_percent_usage()
111			cdef extern mem_stat_t *get_memory_stats()
112			cdef extern load_stat_t *get_load_stats()
113			cdef extern user_stat_t *get_user_stats()
114			cdef extern swap_stat_t *get_swap_stats()
115			cdef extern general_stat_t *get_general_stats()
116			cdef extern disk_stat_t get_disk_stats(int entries)
117			cdef extern diskio_stat_t get_diskio_stats(int entries)
118			cdef extern diskio_stat_t get_diskio_stats_diff(int entries)
119			cdef extern process_stat_t *get_process_stats()
120			cdef extern network_stat_t get_network_stats(int entries)
121			cdef extern network_stat_t get_network_stats_diff(int entries)
122			cdef extern page_stat_t *get_page_stats()
123			cdef extern page_stat_t *get_page_stats_diff()
124			cdef extern int statgrab_init()
125			cdef extern int statgrab_drop_privileges()
126
127
128	tdb	1.2	class Result:
129			def __init__(self, attrs):
130			self.attrs = attrs
131			for attr in attrs:
132			setattr(self, attr, attrs[attr])
133			def __getitem__(self, item):
134			return getattr(self, item)
135			def __repr__(self):
136			return str(self.attrs)
137
138	tdb	1.3	class StatgrabException:
139			def __init__(self, value):
140			self.value = value
141			def __str__(self):
142			return repr(self.value)
143
144	tdb	1.2
145	tdb	1.1	def py_get_cpu_totals():
146			cdef cpu_states_t *s
147			s = get_cpu_totals()
148	tdb	1.3	if s == NULL:
149			raise StatgrabException, 'get_cpu_totals() returned NULL'
150	tdb	1.2	return Result(
151			{'user': s.user,
152			'kernel': s.kernel,
153			'idle': s.idle,
154			'iowait': s.iowait,
155			'swap': s.swap,
156			'nice': s.nice,
157			'total': s.total,
158			'systime': s.systime,
159			}
160			)
161	tdb	1.1
162			def py_get_cpu_diff():
163			cdef cpu_states_t *s
164			s = get_cpu_diff()
165	tdb	1.3	if s == NULL:
166			raise StatgrabException, 'get_cpu_diff() returned NULL'
167	tdb	1.2	return Result(
168			{'user': s.user,
169			'kernel': s.kernel,
170			'idle': s.idle,
171			'iowait': s.iowait,
172			'swap': s.swap,
173			'nice': s.nice,
174			'total': s.total,
175			'systime': s.systime,
176			}
177			)
178	tdb	1.1
179			def py_cpu_percent_usage():
180			cdef cpu_percent_t *s
181			s = cpu_percent_usage()
182	tdb	1.3	if s == NULL:
183			raise StatgrabException, 'cpu_percent_usage() returned NULL'
184	tdb	1.2	return Result(
185			{'user': s.user,
186			'kernel': s.kernel,
187			'idle': s.idle,
188			'iowait': s.iowait,
189			'swap': s.swap,
190			'nice': s.nice,
191			'time_taken': s.time_taken,
192			}
193			)
194	tdb	1.1
195			def py_get_memory_stats():
196			cdef mem_stat_t *s
197			s = get_memory_stats()
198	tdb	1.3	if s == NULL:
199			raise StatgrabException, 'get_memory_stats() returned NULL'
200	tdb	1.2	return Result(
201			{'total': s.total,
202			'used': s.used,
203			'free': s.free,
204			'cache': s.cache,
205			}
206			)
207	tdb	1.1
208			def py_get_load_stats():
209			cdef load_stat_t *s
210			s = get_load_stats()
211	tdb	1.3	if s == NULL:
212			raise StatgrabException, 'get_load_stats() returned NULL'
213	tdb	1.2	return Result(
214			{'min1': s.min1,
215			'min5': s.min5,
216			'min15': s.min15,
217			}
218			)
219	tdb	1.1
220			def py_get_user_stats():
221			cdef user_stat_t *s
222			s = get_user_stats()
223	tdb	1.3	if s == NULL:
224			raise StatgrabException, 'get_user_stats() returned NULL'
225	tdb	1.2	return Result(
226			{'name_list': s.name_list,
227			'num_entries': s.num_entries,
228			}
229			)
230	tdb	1.1
231			def py_get_swap_stats():
232			cdef swap_stat_t *s
233			s = get_swap_stats()
234	tdb	1.3	if s == NULL:
235			raise StatgrabException, 'get_swap_stats() returned NULL'
236	tdb	1.2	return Result(
237			{'total': s.total,
238			'used': s.used,
239			'free': s.free,
240			}
241			)
242	tdb	1.1
243			def py_get_general_stats():
244			cdef general_stat_t *s
245			s = get_general_stats()
246	tdb	1.3	if s == NULL:
247			raise StatgrabException, 'get_general_stats() returned NULL'
248	tdb	1.2	return Result(
249			{'os_name': s.os_name,
250			'os_release': s.os_release,
251			'os_version': s.os_version,
252			'platform': s.platform,
253			'hostname': s.hostname,
254			'uptime': s.uptime,
255			}
256			)
257	tdb	1.1
258			def py_get_disk_stats():
259			cdef disk_stat_t *s
260			cdef int entries
261			s = get_disk_stats(&entries)
262	tdb	1.3	if s == NULL:
263			raise StatgrabException, 'get_disk_stats() returned NULL'
264	tdb	1.1	list = [entries]
265			for i from 0 <= i < entries:
266	tdb	1.2	list.append(Result(
267			{'device_name': s.device_name,
268			'fs_type': s.fs_type,
269			'mnt_point': s.mnt_point,
270			'size': s.size,
271			'used': s.used,
272			'avail': s.avail,
273			'total_inodes': s.total_inodes,
274			'used_inodes': s.used_inodes,
275			'free_inodes': s.free_inodes,
276			}
277			))
278	tdb	1.1	s = s + 1
279			return list
280
281			def py_get_diskio_stats():
282			cdef diskio_stat_t *s
283			cdef int entries
284			s = get_diskio_stats(&entries)
285	tdb	1.3	if s == NULL:
286			raise StatgrabException, 'get_diskio_stats() returned NULL'
287	tdb	1.1	list = [entries]
288			for i from 0 <= i < entries:
289	tdb	1.2	list.append(Result(
290			{'disk_name': s.disk_name,
291			'read_bytes': s.read_bytes,
292			'write_bytes': s.write_bytes,
293			'systime': s.systime,
294			}
295			))
296	tdb	1.1	s = s + 1
297			return list
298
299			def py_get_diskio_stats_diff():
300			cdef diskio_stat_t *s
301			cdef int entries
302			s = get_diskio_stats_diff(&entries)
303	tdb	1.3	if s == NULL:
304			raise StatgrabException, 'get_diskio_stats_diff() returned NULL'
305	tdb	1.1	list = [entries]
306			for i from 0 <= i < entries:
307	tdb	1.2	list.append(Result(
308			{'disk_name': s.disk_name,
309			'read_bytes': s.read_bytes,
310			'write_bytes': s.write_bytes,
311			'systime': s.systime,
312			}
313			))
314	tdb	1.1	s = s + 1
315			return list
316
317			def py_get_process_stats():
318			cdef process_stat_t *s
319			s = get_process_stats()
320	tdb	1.3	if s == NULL:
321			raise StatgrabException, 'get_process_stats() returned NULL'
322	tdb	1.2	return Result(
323			{'total': s.total,
324			'running': s.running,
325			'sleeping': s.sleeping,
326			'stopped': s.stopped,
327			'zombie': s.zombie,
328			}
329			)
330	tdb	1.1
331			def py_get_network_stats():
332			cdef network_stat_t *s
333			cdef int entries
334			s = get_network_stats(&entries)
335	tdb	1.3	if s == NULL:
336			raise StatgrabException, 'get_network_stats() returned NULL'
337	tdb	1.1	list = [entries]
338			for i from 0 <= i < entries:
339	tdb	1.2	list.append(Result(
340			{'interface_name': s.interface_name,
341			'tx': s.tx,
342			'rx': s.rx,
343			'systime': s.systime,
344			}
345			))
346	tdb	1.1	s = s + 1
347			return list
348
349			def py_get_network_stats_diff():
350			cdef network_stat_t *s
351			cdef int entries
352			s = get_network_stats_diff(&entries)
353	tdb	1.3	if s == NULL:
354			raise StatgrabException, 'get_network_stats_diff() returned NULL'
355	tdb	1.1	list = [entries]
356			for i from 0 <= i < entries:
357	tdb	1.2	list.append(Result(
358			{'interface_name': s.interface_name,
359			'tx': s.tx,
360			'rx': s.rx,
361			'systime': s.systime,
362			}
363			))
364	tdb	1.1	s = s + 1
365			return list
366
367			def py_get_page_stats():
368			cdef page_stat_t *s
369			s = get_page_stats()
370	tdb	1.3	if s == NULL:
371			raise StatgrabException, 'get_page_stats() returned NULL'
372	tdb	1.2	return Result(
373			{'pages_pagein': s.pages_pagein,
374			'pages_pageout': s.pages_pageout,
375			}
376			)
377	tdb	1.1
378			def py_get_page_stats_diff():
379			cdef page_stat_t *s
380			s = get_page_stats_diff()
381	tdb	1.3	if s == NULL:
382			raise StatgrabException, 'get_page_stats_diff() returned NULL'
383	tdb	1.2	return Result(
384			{'pages_pagein': s.pages_pagein,
385			'pages_pageout': s.pages_pageout,
386			}
387			)
388	tdb	1.1
389			def py_statgrab_init():
390			return statgrab_init()
391
392			def py_statgrab_drop_privileges():
393			return statgrab_drop_privileges()