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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2013 Inktank Storage, Inc.
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include <cxxabi.h>
#include "common/cmdparse.h"
#include "include/str_list.h"
#include "json_spirit/json_spirit.h"
#include "common/debug.h"
using namespace std;
/**
* Read a command description list out of cmd, and dump it to f.
* A signature description is a set of space-separated words;
* see MonCommands.h for more info.
*/
void
dump_cmd_to_json(Formatter *f, const string& cmd)
{
// put whole command signature in an already-opened container
// elements are: "name", meaning "the typeless name that means a literal"
// an object {} with key:value pairs representing an argument
int argnum = 0;
stringstream ss(cmd);
std::string word;
while (std::getline(ss, word, ' ')) {
argnum++;
// if no , or =, must be a plain word to put out
if (word.find_first_of(",=") == string::npos) {
f->dump_string("arg", word);
continue;
}
// Snarf up all the key=val,key=val pairs, put 'em in a dict.
// no '=val' implies '=True'.
std::stringstream argdesc(word);
std::string keyval;
std::map<std::string, std::string>desckv;
// accumulate descriptor keywords in desckv
while (std::getline(argdesc, keyval, ',')) {
// key=value; key by itself implies value is bool true
// name="name" means arg dict will be titled 'name'
size_t pos = keyval.find('=');
std::string key, val;
if (pos != std::string::npos) {
key = keyval.substr(0, pos);
val = keyval.substr(pos+1);
} else {
key = keyval;
val = true;
}
desckv.insert(std::pair<std::string, std::string> (key, val));
}
// name the individual desc object based on the name key
f->open_object_section(desckv["name"].c_str());
// dump all the keys including name into the array
for (std::map<std::string, std::string>::iterator it = desckv.begin();
it != desckv.end(); ++it) {
f->dump_string(it->first.c_str(), it->second);
}
f->close_section(); // attribute object for individual desc
}
}
void
dump_cmd_and_help_to_json(Formatter *jf,
const string& secname,
const string& cmdsig,
const string& helptext)
{
jf->open_object_section(secname.c_str());
jf->open_array_section("sig");
dump_cmd_to_json(jf, cmdsig);
jf->close_section(); // sig array
jf->dump_string("help", helptext.c_str());
jf->close_section(); // cmd
}
void
dump_cmddesc_to_json(Formatter *jf,
const string& secname,
const string& cmdsig,
const string& helptext,
const string& module,
const string& perm,
const string& avail)
{
jf->open_object_section(secname.c_str());
jf->open_array_section("sig");
dump_cmd_to_json(jf, cmdsig);
jf->close_section(); // sig array
jf->dump_string("help", helptext.c_str());
jf->dump_string("module", module.c_str());
jf->dump_string("perm", perm.c_str());
jf->dump_string("avail", avail.c_str());
jf->close_section(); // cmd
}
/** Parse JSON in vector cmd into a map from field to map of values
* (use mValue/mObject)
* 'cmd' should not disappear over lifetime of map
* 'mapp' points to the caller's map
* 'ss' captures any errors during JSON parsing; if function returns
* false, ss is valid */
bool
cmdmap_from_json(vector<string> cmd, map<string, cmd_vartype> *mapp, stringstream &ss)
{
json_spirit::mValue v;
string fullcmd;
// First, join all cmd strings
for (vector<string>::iterator it = cmd.begin();
it != cmd.end(); ++it)
fullcmd += *it;
try {
if (!json_spirit::read(fullcmd, v))
throw runtime_error("unparseable JSON " + fullcmd);
if (v.type() != json_spirit::obj_type)
throw(runtime_error("not JSON object " + fullcmd));
// allocate new mObject (map) to return
// make sure all contents are simple types (not arrays or objects)
json_spirit::mObject o = v.get_obj();
for (map<string, json_spirit::mValue>::iterator it = o.begin();
it != o.end(); ++it) {
// ok, marshal it into our string->cmd_vartype map, or throw an
// exception if it's not a simple datatype. This is kind of
// annoying, since json_spirit has a boost::variant inside it
// already, but it's not public. Oh well.
switch (it->second.type()) {
case json_spirit::obj_type:
default:
throw(runtime_error("JSON array/object not allowed " + fullcmd));
break;
case json_spirit::array_type:
{
// array is a vector of values. Unpack it to a vector
// of strings, the only type we handle.
vector<json_spirit::mValue> spvals = it->second.get_array();
vector<string> outv;
for (vector<json_spirit::mValue>::iterator sv = spvals.begin();
sv != spvals.end(); ++sv) {
if (sv->type() != json_spirit::str_type)
throw(runtime_error("Can't handle arrays of non-strings"));
outv.push_back(sv->get_str());
}
(*mapp)[it->first] = outv;
}
break;
case json_spirit::str_type:
(*mapp)[it->first] = it->second.get_str();
break;
case json_spirit::bool_type:
(*mapp)[it->first] = it->second.get_bool();
break;
case json_spirit::int_type:
(*mapp)[it->first] = it->second.get_int64();
break;
case json_spirit::real_type:
(*mapp)[it->first] = it->second.get_real();
break;
}
}
return true;
} catch (runtime_error &e) {
ss << e.what();
return false;
}
}
class stringify_visitor : public boost::static_visitor<string>
{
public:
template <typename T>
string operator()(T &operand) const
{
ostringstream oss;
oss << operand;
return oss.str();
}
};
string
cmd_vartype_stringify(const cmd_vartype &v)
{
return boost::apply_visitor(stringify_visitor(), v);
}
void
handle_bad_get(CephContext *cct, string k, const char *tname)
{
ostringstream errstr;
int status;
const char *typestr = abi::__cxa_demangle(tname, 0, 0, &status);
if (status != 0)
typestr = tname;
errstr << "bad boost::get: key " << k << " is not type " << typestr;
lderr(cct) << errstr.str() << dendl;
BackTrace bt(1);
ostringstream oss;
bt.print(oss);
lderr(cct) << oss << dendl;
if (status == 0)
free((char *)typestr);
}
|
