from __future__ import print_function
from cffi import FFI
+import time
ffi = FFI()
ffi.cdef("""
typedef enum {
STAT_DIR_TYPE_ILLEGAL = 0,
- STAT_DIR_TYPE_SCALAR_POINTER,
- STAT_DIR_TYPE_VECTOR_POINTER,
+ STAT_DIR_TYPE_SCALAR_INDEX,
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 {
+typedef struct
+{
stat_directory_type_t type;
- void *value;
+ union {
+ uint64_t offset;
+ uint64_t index;
+ uint64_t value;
+ };
+ uint64_t offset_vector;
+ char name[128]; // TODO change this to pointer to "somewhere"
} stat_segment_directory_entry_t;
-typedef struct {
+typedef struct
+{
char *name;
stat_directory_type_t type;
- union {
+ 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;
-
+typedef struct
+{
+ uint64_t epoch;
+ uint64_t in_progress;
+ uint64_t directory_offset;
+ uint64_t error_offset;
+ uint64_t stats_offset;
+} stat_segment_shared_header_t;
+
+typedef struct
+{
+ uint64_t current_epoch;
+ stat_segment_shared_header_t *shared_header;
+ stat_segment_directory_entry_t *directory_vector;
+ ssize_t memory_size;
+} stat_client_main_t;
+
+stat_client_main_t * stat_client_get(void);
+void stat_client_free(stat_client_main_t * sm);
+int stat_segment_connect_r (char *socket_name, stat_client_main_t * sm);
int stat_segment_connect (char *socket_name);
+void stat_segment_disconnect_r (stat_client_main_t * sm);
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 *);
+uint32_t *stat_segment_ls_r (uint8_t ** patterns, stat_client_main_t * sm);
+uint32_t *stat_segment_ls (uint8_t ** pattern);
+stat_segment_data_t *stat_segment_dump_r (uint32_t * stats, stat_client_main_t * sm);
+stat_segment_data_t *stat_segment_dump (uint32_t * counter_vec);
void stat_segment_data_free (stat_segment_data_t * res);
+
+double stat_segment_heartbeat_r (stat_client_main_t * sm);
double stat_segment_heartbeat (void);
int stat_segment_vec_len(void *vec);
uint8_t **stat_segment_string_vector(uint8_t **string_vector, char *string);
if type(strings) is not list:
strings = [strings]
for s in strings:
- vec = api.stat_segment_string_vector(vec, ffi.new("char []", s))
+ vec = api.stat_segment_string_vector(vec, ffi.new("char []",
+ s.encode()))
return vec
def stat_entry_to_python(api, e):
+ # Scalar index
+ if e.type == 1:
+ return e.scalar_value
+ return None
+ if e.type == 2:
+ return simple_counter_vec_list(api, e.simple_counter_vec)
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:
+ if e.type == 4:
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)
+class VPPStats(object):
+ def __init__(self, socketname='/var/run/stats.sock', timeout=10):
+ try:
+ self.api = ffi.dlopen('libvppapiclient.so')
+ except Exception:
+ raise RuntimeError("Could not open: libvppapiclient.so")
+ self.client = self.api.stat_client_get()
+
+ poll_end_time = time.time() + timeout
+ while time.time() < poll_end_time:
+ rv = self.api.stat_segment_connect_r(socketname.encode(),
+ self.client)
+ if rv == 0:
+ break
+
if rv != 0:
raise IOError()
def heartbeat(self):
- return self.api.stat_segment_heartbeat()
+ return self.api.stat_segment_heartbeat_r(self.client)
def ls(self, patterns):
- return self.api.stat_segment_ls(make_string_vector(self.api, patterns))
+ return self.api.stat_segment_ls_r(make_string_vector(self.api,
+ patterns),
+ self.client)
def dump(self, counters):
stats = {}
- rv = self.api.stat_segment_dump(counters)
+ rv = self.api.stat_segment_dump_r(counters, self.client)
+ # Raise exception and retry
+ if rv == ffi.NULL:
+ raise IOError()
rv_len = self.api.stat_segment_vec_len(rv)
for i in range(rv_len):
- n = ffi.string(rv[i].name)
+ n = ffi.string(rv[i].name).decode()
e = stat_entry_to_python(self.api, rv[i])
- if e:
+ if e is not None:
stats[n] = e
return stats
- def dump_str(self, counters_str):
- return self.dump(make_string_vector(self.api, counters_str))
+ def get_counter(self, name):
+ retries = 0
+ while True:
+ try:
+ dir = self.ls(name)
+ return self.dump(dir).values()[0]
+ except Exception as e:
+ if retries > 10:
+ return None
+ retries += 1
def disconnect(self):
- self.api.stat_segment_disconnect()
+ self.api.stat_segment_disconnect_r(self.client)
+ self.api.stat_client_free(self.client)
def set_errors(self):
'''Return all errors counters > 0'''
- error_names = self.ls(['/err/'])
- error_counters = self.dump(error_names)
+ retries = 0
+ while True:
+ try:
+ error_names = self.ls(['/err/'])
+ error_counters = self.dump(error_names)
+ break
+ except Exception as e:
+ if retries > 10:
+ return None
+ retries += 1
+
return {k: error_counters[k]
for k in error_counters.keys() if error_counters[k]}
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
Code Review / vpp.git / blobdiff