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/*
* Copyright (C) 2016, 2017, 2018 "IoT.bzh"
* Author José Bollo <jose.bollo@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _GNU_SOURCE
#include <string.h>
#include <json-c/json.h>
#define AFB_BINDING_VERSION 3
#include <afb/afb-binding.h>
#include "afb-api.h"
#include "afb-apiset.h"
#include "afb-api-v3.h"
#include "afb-evt.h"
#include "afb-xreq.h"
#include "afb-trace.h"
#include "afb-session.h"
#include "verbose.h"
#include "wrap-json.h"
#include "monitor-api.inc"
static struct afb_apiset *target_set;
int afb_monitor_init(struct afb_apiset *declare_set, struct afb_apiset *call_set)
{
target_set = call_set;
return -!afb_api_v3_from_binding(&_afb_binding_monitor, declare_set, call_set);
}
/******************************************************************************
**** Monitoring verbosity
******************************************************************************/
static const char _debug_[] = "debug";
static const char _info_[] = "info";
static const char _notice_[] = "notice";
static const char _warning_[] = "warning";
static const char _error_[] = "error";
/**
* Translate verbosity indication to an integer value.
* @param v the verbosity indication
* @return the verbosity level (0, 1, 2 or 3) or -1 in case of error
*/
static int decode_verbosity(struct json_object *v)
{
const char *s;
int level = -1;
if (!wrap_json_unpack(v, "i", &level)) {
level = level < _VERBOSITY_(Log_Level_Error) ? _VERBOSITY_(Log_Level_Error) : level > _VERBOSITY_(Log_Level_Debug) ? _VERBOSITY_(Log_Level_Debug) : level;
} else if (!wrap_json_unpack(v, "s", &s)) {
switch(*s&~' ') {
case 'D':
if (!strcasecmp(s, _debug_))
level = _VERBOSITY_(Log_Level_Debug);
break;
case 'I':
if (!strcasecmp(s, _info_))
level = _VERBOSITY_(Log_Level_Info);
break;
case 'N':
if (!strcasecmp(s, _notice_))
level = _VERBOSITY_(Log_Level_Notice);
break;
case 'W':
if (!strcasecmp(s, _warning_))
level = _VERBOSITY_(Log_Level_Warning);
break;
case 'E':
if (!strcasecmp(s, _error_))
level = _VERBOSITY_(Log_Level_Error);
break;
}
}
return level;
}
/**
* callback for setting verbosity on all apis
* @param set the apiset
* @param the name of the api to set
* @param closure the verbosity to set as an integer casted to a pointer
*/
static void set_verbosity_to_all_cb(void *closure, struct afb_apiset *set, const char *name, int isalias)
{
if (!isalias)
afb_apiset_set_logmask(set, name, (int)(intptr_t)closure);
}
/**
* set the verbosity 'level' of the api of 'name'
* @param name the api name or "*" for any api or NULL or "" for global verbosity
* @param level the verbosity level to set
*/
static void set_verbosity_to(const char *name, int level)
{
int mask = verbosity_to_mask(level);
if (!name || !name[0])
verbosity_set(level);
else if (name[0] == '*' && !name[1])
afb_apiset_enum(target_set, 1, set_verbosity_to_all_cb, (void*)(intptr_t)mask);
else
afb_apiset_set_logmask(target_set, name, mask);
}
/**
* Set verbosities accordling to specification in 'spec'
* @param spec specification of the verbosity to set
*/
static void set_verbosity(struct json_object *spec)
{
int l;
struct json_object_iterator it, end;
if (json_object_is_type(spec, json_type_object)) {
it = json_object_iter_begin(spec);
end = json_object_iter_end(spec);
while (!json_object_iter_equal(&it, &end)) {
l = decode_verbosity(json_object_iter_peek_value(&it));
if (l >= 0)
set_verbosity_to(json_object_iter_peek_name(&it), l);
json_object_iter_next(&it);
}
} else {
l = decode_verbosity(spec);
if (l >= 0) {
set_verbosity_to("", l);
set_verbosity_to("*", l);
}
}
}
/**
* Translate verbosity level to a protocol indication.
* @param level the verbosity
* @return the encoded verbosity
*/
static struct json_object *encode_verbosity(int level)
{
switch(_DEVERBOSITY_(level)) {
case Log_Level_Error: return json_object_new_string(_error_);
case Log_Level_Warning: return json_object_new_string(_warning_);
case Log_Level_Notice: return json_object_new_string(_notice_);
case Log_Level_Info: return json_object_new_string(_info_);
case Log_Level_Debug: return json_object_new_string(_debug_);
default: return json_object_new_int(level);
}
}
/**
* callback for getting verbosity of all apis
* @param set the apiset
* @param the name of the api to set
* @param closure the json object to build
*/
static void get_verbosity_of_all_cb(void *closure, struct afb_apiset *set, const char *name, int isalias)
{
struct json_object *resu = closure;
int m = afb_apiset_get_logmask(set, name);
if (m >= 0)
json_object_object_add(resu, name, encode_verbosity(verbosity_from_mask(m)));
}
/**
* get in resu the verbosity of the api of 'name'
* @param resu the json object to build
* @param name the api name or "*" for any api or NULL or "" for global verbosity
*/
static void get_verbosity_of(struct json_object *resu, const char *name)
{
int m;
if (!name || !name[0])
json_object_object_add(resu, "", encode_verbosity(verbosity_get()));
else if (name[0] == '*' && !name[1])
afb_apiset_enum(target_set, 1, get_verbosity_of_all_cb, resu);
else {
m = afb_apiset_get_logmask(target_set, name);
if (m >= 0)
json_object_object_add(resu, name, encode_verbosity(verbosity_from_mask(m)));
}
}
/**
* get verbosities accordling to specification in 'spec'
* @param resu the json object to build
* @param spec specification of the verbosity to set
*/
static struct json_object *get_verbosity(struct json_object *spec)
{
int i, n;
struct json_object *resu;
struct json_object_iterator it, end;
resu = json_object_new_object();
if (json_object_is_type(spec, json_type_object)) {
it = json_object_iter_begin(spec);
end = json_object_iter_end(spec);
while (!json_object_iter_equal(&it, &end)) {
get_verbosity_of(resu, json_object_iter_peek_name(&it));
json_object_iter_next(&it);
}
} else if (json_object_is_type(spec, json_type_array)) {
n = json_object_array_length(spec);
for (i = 0 ; i < n ; i++)
get_verbosity_of(resu, json_object_get_string(json_object_array_get_idx(spec, i)));
} else if (json_object_is_type(spec, json_type_string)) {
get_verbosity_of(resu, json_object_get_string(spec));
} else if (json_object_get_boolean(spec)) {
get_verbosity_of(resu, "");
get_verbosity_of(resu, "*");
}
return resu;
}
/******************************************************************************
**** Monitoring apis
******************************************************************************/
/**
* get apis accordling to specification in 'spec'
* @param resu the json object to build
* @param spec specification of the verbosity to set
*/
static void get_one_api(struct json_object *resu, const char *name, struct json_object *spec)
{
struct json_object *o;
o = afb_apiset_describe(target_set, name);
if (o || afb_apiset_lookup(target_set, name, 1))
json_object_object_add(resu, name, o);
}
/**
* callback for getting verbosity of all apis
* @param set the apiset
* @param the name of the api to set
* @param closure the json object to build
*/
static void get_apis_of_all_cb(void *closure, struct afb_apiset *set, const char *name, int isalias)
{
struct json_object *resu = closure;
get_one_api(resu, name, NULL);
}
/**
* get apis accordling to specification in 'spec'
* @param resu the json object to build
* @param spec specification of the verbosity to set
*/
static struct json_object *get_apis(struct json_object *spec)
{
int i, n;
struct json_object *resu;
struct json_object_iterator it, end;
resu = json_object_new_object();
if (json_object_is_type(spec, json_type_object)) {
it = json_object_iter_begin(spec);
end = json_object_iter_end(spec);
while (!json_object_iter_equal(&it, &end)) {
get_one_api(resu, json_object_iter_peek_name(&it), json_object_iter_peek_value(&it));
json_object_iter_next(&it);
}
} else if (json_object_is_type(spec, json_type_array)) {
n = json_object_array_length(spec);
for (i = 0 ; i < n ; i++)
get_one_api(resu, json_object_get_string(json_object_array_get_idx(spec, i)), NULL);
} else if (json_object_is_type(spec, json_type_string)) {
get_one_api(resu, json_object_get_string(spec), NULL);
} else if (json_object_get_boolean(spec)) {
afb_apiset_enum(target_set, 1, get_apis_of_all_cb, resu);
}
return resu;
}
/******************************************************************************
**** Implementation monitoring verbs
******************************************************************************/
static const char _verbosity_[] = "verbosity";
static const char _apis_[] = "apis";
static const char _refresh_token_[] = "refresh-token";
static void f_get(afb_req_t req)
{
struct json_object *r;
struct json_object *apis = NULL;
struct json_object *verbosity = NULL;
wrap_json_unpack(afb_req_json(req), "{s?:o,s?:o}", _verbosity_, &verbosity, _apis_, &apis);
if (verbosity)
verbosity = get_verbosity(verbosity);
if (apis)
apis = get_apis(apis);
wrap_json_pack(&r, "{s:o*,s:o*}", _verbosity_, verbosity, _apis_, apis);
afb_req_success(req, r, NULL);
}
static void f_set(afb_req_t req)
{
struct json_object *verbosity = NULL;
wrap_json_unpack(afb_req_json(req), "{s?:o}", _verbosity_, &verbosity);
if (verbosity)
set_verbosity(verbosity);
afb_req_success(req, NULL, NULL);
}
static void *context_create(void *closure)
{
return afb_trace_create(_afb_binding_monitor.api, NULL);
}
static void context_destroy(void *pointer)
{
struct afb_trace *trace = pointer;
afb_trace_unref(trace);
}
static void f_trace(afb_req_t req)
{
int rc;
struct json_object *add = NULL;
struct json_object *drop = NULL;
struct afb_trace *trace;
trace = afb_req_context(req, 0, context_create, context_destroy, NULL);
wrap_json_unpack(afb_req_json(req), "{s?o s?o}", "add", &add, "drop", &drop);
if (add) {
rc = afb_trace_add(req, add, trace);
if (rc)
goto end;
}
if (drop) {
rc = afb_trace_drop(req, drop, trace);
if (rc)
goto end;
}
afb_req_success(req, NULL, NULL);
end:
afb_apiset_update_hooks(target_set, NULL);
afb_evt_update_hooks();
}
static void f_session(afb_req_t req)
{
struct json_object *r = NULL;
int refresh = 0;
struct afb_xreq *xreq = xreq_from_req_x2(req);
/* check right to call it */
if (xreq->context.super) {
afb_req_fail(req, "invalid", "reserved to direct clients");
return;
}
/* renew the token if required */
wrap_json_unpack(afb_req_json(req), "{s?:b}", _refresh_token_, &refresh);
if (refresh)
afb_context_refresh(&xreq->context);
/* make the result */
wrap_json_pack(&r, "{s:s,s:s,s:i,s:i}",
"uuid", afb_session_uuid(xreq->context.session),
"token", afb_session_token(xreq->context.session),
"timeout", afb_session_timeout(xreq->context.session),
"remain", afb_session_what_remains(xreq->context.session));
afb_req_success(req, r, NULL);
}
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