1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
#!/usr/bin/env python
from __future__ import print_function
from cffi import FFI
ffi = FFI()
ffi.cdef("""
typedef uint64_t counter_t;
typedef struct {
counter_t packets;
counter_t bytes;
} vlib_counter_t;
typedef enum {
STAT_DIR_TYPE_ILLEGAL = 0,
STAT_DIR_TYPE_SCALAR_POINTER,
STAT_DIR_TYPE_VECTOR_POINTER,
STAT_DIR_TYPE_COUNTER_VECTOR_SIMPLE,
STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED,
STAT_DIR_TYPE_ERROR_INDEX,
STAT_DIR_TYPE_SERIALIZED_NODES,
} stat_directory_type_t;
typedef struct {
stat_directory_type_t type;
void *value;
} stat_segment_directory_entry_t;
typedef struct {
char *name;
stat_directory_type_t type;
union {
double scalar_value;
uint64_t error_value;
uint64_t *vector_pointer;
counter_t **simple_counter_vec;
vlib_counter_t **combined_counter_vec;
};
} stat_segment_data_t;
typedef struct {
char *name;
stat_segment_directory_entry_t *ep;
} stat_segment_cached_pointer_t;
int stat_segment_connect (char *socket_name);
void stat_segment_disconnect (void);
uint8_t **stat_segment_ls (uint8_t **pattern);
stat_segment_data_t *stat_segment_dump (uint8_t ** counter_vec);
/* Collects registered counters */
stat_segment_cached_pointer_t *stat_segment_register (uint8_t ** counter_vec);
stat_segment_data_t *stat_segment_collect (stat_segment_cached_pointer_t *);
void stat_segment_data_free (stat_segment_data_t * res);
double stat_segment_heartbeat (void);
int stat_segment_vec_len(void *vec);
uint8_t **stat_segment_string_vector(uint8_t **string_vector, char *string);
""")
# Utility functions
def make_string_vector(api, strings):
vec = ffi.NULL
if type(strings) is not list:
strings = [strings]
for s in strings:
vec = api.stat_segment_string_vector(vec, ffi.new("char []", s))
return vec
def make_string_list(api, vec):
vec_len = api.stat_segment_vec_len(vec)
return [ffi.string(vec[i]) for i in range(vec_len)]
# 2-dimensonal array of thread, index
def simple_counter_vec_list(api, e):
vec = []
for thread in range(api.stat_segment_vec_len(e)):
len_interfaces = api.stat_segment_vec_len(e[thread])
if_per_thread = [e[thread][interfaces]
for interfaces in range(len_interfaces)]
vec.append(if_per_thread)
return vec
def vlib_counter_dict(c):
return {'packets': c.packets,
'bytes': c.bytes}
def combined_counter_vec_list(api, e):
vec = []
for thread in range(api.stat_segment_vec_len(e)):
len_interfaces = api.stat_segment_vec_len(e[thread])
if_per_thread = [vlib_counter_dict(e[thread][interfaces])
for interfaces in range(len_interfaces)]
vec.append(if_per_thread)
return vec
def stat_entry_to_python(api, e):
if e.type == 3:
return simple_counter_vec_list(e.simple_counter_vec)
if e.type == 4:
return combined_counter_vec_list(api, e.combined_counter_vec)
if e.type == 5:
return e.error_value
return None
class VPPStats:
def __init__(self, socketname='/var/run/stats.sock'):
self.api = ffi.dlopen('libvppapiclient.so')
rv = self.api.stat_segment_connect(socketname)
if rv != 0:
raise IOError()
def heartbeat(self):
return self.api.stat_segment_heartbeat()
def ls(self, patterns):
return self.api.stat_segment_ls(make_string_vector(self.api, patterns))
def dump(self, counters):
stats = {}
rv = self.api.stat_segment_dump(counters)
rv_len = self.api.stat_segment_vec_len(rv)
for i in range(rv_len):
n = ffi.string(rv[i].name)
e = stat_entry_to_python(self.api, rv[i])
if e:
stats[n] = e
return stats
def dump_str(self, counters_str):
return self.dump(make_string_vector(self.api, counters_str))
def disconnect(self):
self.api.stat_segment_disconnect()
def set_errors(self):
'''Return all errors counters > 0'''
error_names = self.ls(['/err/'])
error_counters = self.dump(error_names)
return {k: error_counters[k]
for k in error_counters.keys() if error_counters[k]}
def set_errors_str(self):
'''Return all errors counters > 0 pretty printed'''
s = 'ERRORS:\n'
error_counters = self.set_errors()
for k in sorted(error_counters):
s += '{:<60}{:>10}\n'.format(k, error_counters[k])
return s
def register(self):
raise NotImplemented
def collect(self):
raise NotImplemented
|
