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authorOle Troan <ot@cisco.com>2018-08-31 00:29:48 +0200
committerDamjan Marion <dmarion@me.com>2018-09-02 16:13:57 +0000
commit732021070fa0c731896ab3e29f802d3834c72ab7 (patch)
treed7ecbd4e4c986333b1ba59db931f0e3283da2195 /src
parent855e26868ff8b9e6d00ca4d69ce6c9fdc0f2e121 (diff)
STATS: Python binding to access VPP statistics and counters.
from vpp_papi.vpp_stats import VPPStats s = VPPStats(socketname='/var/run/stats.sock') c = s.ls('/if/rx') counters = s.dump(c) print(s.set_error_str()) Change-Id: I203ebe60b0c9ee5742aadc737c0f29051757959d Signed-off-by: Ole Troan <ot@cisco.com>
Diffstat (limited to 'src')
-rw-r--r--src/vpp-api/client/libvppapiclient.map2
-rw-r--r--src/vpp-api/client/stat_client.c23
-rw-r--r--src/vpp-api/client/stat_client.h9
-rw-r--r--src/vpp-api/python/vpp_papi/vpp_stats.py161
-rw-r--r--src/vpp/app/vpp_get_stats.c2
5 files changed, 188 insertions, 9 deletions
diff --git a/src/vpp-api/client/libvppapiclient.map b/src/vpp-api/client/libvppapiclient.map
index 81391ea7687..f51b92403da 100644
--- a/src/vpp-api/client/libvppapiclient.map
+++ b/src/vpp-api/client/libvppapiclient.map
@@ -21,5 +21,7 @@ VPPAPICLIENT_18.10 {
stat_segment_dump;
stat_segment_data_free;
stat_segment_heartbeat;
+ stat_segment_string_vector;
+ stat_segment_vec_len;
local: *;
};
diff --git a/src/vpp-api/client/stat_client.c b/src/vpp-api/client/stat_client.c
index d7d20452583..ad7078ea745 100644
--- a/src/vpp-api/client/stat_client.c
+++ b/src/vpp-api/client/stat_client.c
@@ -112,7 +112,7 @@ stat_segment_register (u8 * stats[])
p = hash_get_mem (sm->counter_vector_by_name, stats[i]);
if (p == 0)
{
- fprintf (stderr, "WARN: %s not in directory!", stats[i]);
+ fprintf (stderr, "WARN: %s not in directory!\n", stats[i]);
continue;
}
vec_add2 (cached_pointer_vec, cp, 1);
@@ -183,7 +183,7 @@ maybe_update_cached_pointers (stat_segment_cached_pointer_t * cached_pointers)
p = hash_get_mem (sm->counter_vector_by_name, cp->name);
if (p == 0)
{
- fprintf (stderr, "WARN: %s not in directory!", cp->name);
+ fprintf (stderr, "WARN: %s not in directory!\n", cp->name);
continue;
}
cp->ep = (stat_segment_directory_entry_t *) (p[0]);
@@ -351,7 +351,7 @@ stat_segment_dump (u8 * stats[])
p = hash_get_mem (sm->counter_vector_by_name, stats[i]);
if (p == 0)
{
- fprintf (stderr, "WARN: %s not in directory!", stats[i]);
+ fprintf (stderr, "WARN: %s not in directory!\n", stats[i]);
continue;
}
/* Collect counter */
@@ -363,6 +363,23 @@ stat_segment_dump (u8 * stats[])
return res;
}
+/* Wrapper for accessing vectors from other languages */
+int
+stat_segment_vec_len (void *vec)
+{
+ return vec_len (vec);
+}
+
+/* Create a vector from a string (or add to existing) */
+u8 **
+stat_segment_string_vector (u8 ** string_vector, char *string)
+{
+ u8 *name = 0;
+ name = vec_dup ((u8 *) string);
+ vec_add1 (string_vector, (u8 *) name);
+ return string_vector;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
diff --git a/src/vpp-api/client/stat_client.h b/src/vpp-api/client/stat_client.h
index 5f076686fdd..73e91b1881b 100644
--- a/src/vpp-api/client/stat_client.h
+++ b/src/vpp-api/client/stat_client.h
@@ -42,16 +42,15 @@ typedef struct
int stat_segment_connect (char *socket_name);
void stat_segment_disconnect (void);
-
u8 **stat_segment_ls (u8 ** pattern);
stat_segment_data_t *stat_segment_dump (u8 ** counter_vec);
-
stat_segment_cached_pointer_t *stat_segment_register (u8 ** counter_vec);
-stat_segment_data_t *stat_segment_collect (stat_segment_cached_pointer_t *); /* Collects registered counters */
-
+/* Collects registered counters */
+stat_segment_data_t *stat_segment_collect (stat_segment_cached_pointer_t *);
void stat_segment_data_free (stat_segment_data_t * res);
-
f64 stat_segment_heartbeat (void);
+u8 **stat_segment_string_vector (u8 ** string_vector, char *string);
+int stat_segment_vec_len (void *vec);
#endif /* included_stat_client_h */
diff --git a/src/vpp-api/python/vpp_papi/vpp_stats.py b/src/vpp-api/python/vpp_papi/vpp_stats.py
new file mode 100644
index 00000000000..b84a0e5dc9d
--- /dev/null
+++ b/src/vpp-api/python/vpp_papi/vpp_stats.py
@@ -0,0 +1,161 @@
+#!/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
diff --git a/src/vpp/app/vpp_get_stats.c b/src/vpp/app/vpp_get_stats.c
index c1f43a747ed..908e675b062 100644
--- a/src/vpp/app/vpp_get_stats.c
+++ b/src/vpp/app/vpp_get_stats.c
@@ -186,7 +186,7 @@ reconnect:
break;
case STAT_DIR_TYPE_COUNTER_VECTOR_COMBINED:
- for (k = 0; k < vec_len (res[i].simple_counter_vec); k++)
+ for (k = 0; k < vec_len (res[i].combined_counter_vec); k++)
for (j = 0; j < vec_len (res[i].combined_counter_vec[k]); j++)
fformat (stdout, "[%d @ %d]: %lld packets, %lld bytes %s\n",
j, k, res[i].combined_counter_vec[k][j].packets,