forked from scylladb/scylladb
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathschema.cc
327 lines (278 loc) · 10.8 KB
/
schema.cc
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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
/*
* Copyright (C) 2014 Cloudius Systems, Ltd.
*/
#include "utils/UUID_gen.hh"
#include "cql3/column_identifier.hh"
#include "schema.hh"
#include "schema_builder.hh"
#include <boost/algorithm/cxx11/any_of.hpp>
constexpr int32_t schema::NAME_LENGTH;
const std::experimental::optional<sstring> schema::DEFAULT_COMPRESSOR = sstring("LZ4Compressor");
template<typename Sequence>
std::vector<data_type>
get_column_types(const Sequence& column_definitions) {
std::vector<data_type> result;
for (auto&& col : column_definitions) {
result.push_back(col.type);
}
return result;
}
::shared_ptr<cql3::column_specification>
schema::make_column_specification(const column_definition& def) {
auto id = ::make_shared<cql3::column_identifier>(def.name(), column_name_type(def));
return ::make_shared<cql3::column_specification>(_raw._ks_name, _raw._cf_name, std::move(id), def.type);
}
void schema::rebuild() {
_partition_key_type = make_lw_shared<compound_type<>>(get_column_types(partition_key_columns()));
_clustering_key_type = make_lw_shared<compound_type<>>(get_column_types(clustering_key_columns()));
_clustering_key_prefix_type = make_lw_shared(_clustering_key_type->as_prefix());
_columns_by_name.clear();
_regular_columns_by_name.clear();
for (const column_definition& def : all_columns_in_select_order()) {
_columns_by_name[def.name()] = &def;
}
for (const column_definition& def : regular_columns()) {
_regular_columns_by_name[def.name()] = &def;
}
}
schema::raw_schema::raw_schema(utils::UUID id)
: _id(id)
{ }
schema::schema(const raw_schema& raw)
: _raw(raw)
, _offsets([this] {
auto& cols = _raw._columns;
std::array<size_t, 4> count = { 0, 0, 0, 0 };
auto i = cols.begin();
auto e = cols.end();
for (auto k : { column_kind::partition_key, column_kind::clustering_key, column_kind::static_column, column_kind::regular_column }) {
auto j = std::partition(i, e, [k](const auto& c) {
return c.kind == k;
});
count[size_t(k)] = std::distance(i, j);
i = j;
}
return std::array<size_t, 3> { count[0], count[0] + count[1], count[0] + count[1] + count[2] };
}())
, _regular_columns_by_name(serialized_compare(_raw._regular_column_name_type))
{
struct name_compare {
data_type type;
name_compare(data_type type) : type(type) {}
bool operator()(const column_definition& cd1, const column_definition& cd2) const {
return type->less(cd1.name(), cd2.name());
}
};
std::sort(
_raw._columns.begin() + column_offset(column_kind::static_column),
_raw._columns.begin()
+ column_offset(column_kind::regular_column),
name_compare(utf8_type));
std::sort(
_raw._columns.begin()
+ column_offset(column_kind::regular_column),
_raw._columns.end(), name_compare(regular_column_name_type()));
column_id id = 0;
for (auto& def : _raw._columns) {
def.column_specification = make_column_specification(def);
def.id = id - column_offset(def.kind);
def._thrift_bits = column_definition::thrift_bits();
{
// is_on_all_components
// TODO : In origin, this predicate is "componentIndex == null", which is true in
// a number of cases, some of which I've most likely missed...
switch (def.kind) {
case column_kind::partition_key:
// In origin, ci == null is true for a PK column where CFMetaData "keyValidator" is non-composite.
// Which is true of #pk == 1
def._thrift_bits.is_on_all_components = partition_key_size() == 1;
break;
default:
// Or any other column where "comparator" is not compound
def._thrift_bits.is_on_all_components = !thrift().has_compound_comparator();
break;
}
}
++id;
}
rebuild();
}
schema::schema(std::experimental::optional<utils::UUID> id,
sstring ks_name,
sstring cf_name,
std::vector<column> partition_key,
std::vector<column> clustering_key,
std::vector<column> regular_columns,
std::vector<column> static_columns,
data_type regular_column_name_type,
sstring comment)
: schema([&] {
raw_schema raw(id ? *id : utils::UUID_gen::get_time_UUID());
raw._comment = std::move(comment);
raw._ks_name = std::move(ks_name);
raw._cf_name = std::move(cf_name);
raw._regular_column_name_type = regular_column_name_type;
auto build_columns = [&raw](std::vector<column>& columns, column_kind kind) {
for (auto& sc : columns) {
raw._columns.emplace_back(std::move(sc.name), std::move(sc.type), kind);
}
};
build_columns(partition_key, column_kind::partition_key);
build_columns(clustering_key, column_kind::clustering_key);
build_columns(static_columns, column_kind::static_column);
build_columns(regular_columns, column_kind::regular_column);
return raw;
}())
{}
schema::schema(const schema& o)
: _raw(o._raw)
, _offsets(o._offsets)
, _regular_columns_by_name(serialized_compare(_raw._regular_column_name_type))
{
rebuild();
}
bool
schema::has_collections() const {
return boost::algorithm::any_of(all_columns_in_select_order(), [] (const column_definition& cdef) {
return cdef.type->is_collection();
});
}
bool operator==(const schema& x, const schema& y)
{
return x._raw._id == y._raw._id
&& x._raw._ks_name == y._raw._ks_name
&& x._raw._cf_name == y._raw._cf_name
&& x._raw._columns == y._raw._columns
&& x._raw._comment == y._raw._comment
&& x._raw._default_time_to_live == y._raw._default_time_to_live
&& x._raw._regular_column_name_type->equals(y._raw._regular_column_name_type)
&& x._raw._bloom_filter_fp_chance == y._raw._bloom_filter_fp_chance;
}
index_info::index_info(::index_type idx_type,
std::experimental::optional<sstring> idx_name,
std::experimental::optional<index_options_map> idx_options)
: index_type(idx_type), index_name(idx_name), index_options(idx_options)
{}
column_definition::column_definition(bytes name, data_type type, column_kind kind, index_info idx)
: _name(std::move(name)), type(std::move(type)), kind(kind), idx_info(std::move(idx))
{}
const column_definition*
schema::get_column_definition(const bytes& name) const {
auto i = _columns_by_name.find(name);
if (i == _columns_by_name.end()) {
return nullptr;
}
return i->second;
}
const sstring&
column_definition::name_as_text() const {
return column_specification->name->text();
}
const bytes&
column_definition::name() const {
return _name;
}
bool
column_definition::is_compact_value() const {
warn(unimplemented::cause::COMPACT_TABLES);
return false;
}
bool column_definition::is_on_all_components() const {
return _thrift_bits.is_on_all_components;
}
bool operator==(const column_definition& x, const column_definition& y)
{
return x._name == y._name
&& x.type->equals(y.type)
&& x.id == y.id
&& x.kind == y.kind;
}
// Based on org.apache.cassandra.config.CFMetaData#generateLegacyCfId
utils::UUID
generate_legacy_id(const sstring& ks_name, const sstring& cf_name) {
return utils::UUID_gen::get_name_UUID(ks_name + cf_name);
}
bool thrift_schema::is_dense() const {
warn(unimplemented::cause::COMPACT_TABLES);
return false;
}
bool thrift_schema::has_compound_comparator() const {
// until we "map" compact storage, at which point it might not be "true".
warn(unimplemented::cause::COMPACT_TABLES);
return true;
}
schema_builder::schema_builder(const sstring& ks_name, const sstring& cf_name,
std::experimental::optional<utils::UUID> id, data_type rct)
: _raw(id ? *id : utils::UUID_gen::get_time_UUID())
{
_raw._ks_name = ks_name;
_raw._cf_name = cf_name;
_raw._regular_column_name_type = rct;
}
schema_builder::schema_builder(const schema_ptr s)
: schema_builder(s->_raw)
{}
schema_builder::schema_builder(const schema::raw_schema& raw)
: _raw(raw)
{}
column_definition& schema_builder::find_column(const cql3::column_identifier& c) {
auto i = std::find_if(_raw._columns.begin(), _raw._columns.end(), [c](auto& p) {
return p.name() == c.name();
});
if (i != _raw._columns.end()) {
return *i;
}
throw std::invalid_argument(sprint("No such column %s", c.name()));
}
void schema_builder::add_default_index_names(database& db) {
auto s = db.find_schema(ks_name(), cf_name());
if (s) {
for (auto& sc : _raw._columns) {
if (sc.idx_info.index_type == index_type::none) {
continue;
}
auto* c = s->get_column_definition(sc.name());
if (c == nullptr || !c->idx_info.index_name) {
continue;
}
if (sc.idx_info.index_name
&& sc.idx_info.index_name != c->idx_info.index_name) {
throw new exceptions::configuration_exception(
sprint(
"Can't modify index name: was '%s' changed to '%s'",
*c->idx_info.index_name,
*sc.idx_info.index_name));
}
sc.idx_info.index_name = c->idx_info.index_name;
}
}
auto existing_names = db.existing_index_names();
for (auto& sc : _raw._columns) {
if (sc.idx_info.index_type != index_type::none && sc.idx_info.index_name) {
sstring base_name = cf_name() + "_" + *sc.idx_info.index_name + "_idx";
auto i = std::remove_if(base_name.begin(), base_name.end(), [](char c) {
return ::isspace(c);
});
base_name.erase(i, base_name.end());
auto index_name = base_name;
int n = 0;
while (existing_names.count(index_name)) {
index_name = base_name + "_" + to_sstring(++n);
}
sc.idx_info.index_name = index_name;
}
}
}
schema_builder& schema_builder::with_column(const column_definition& c) {
return with_column(bytes(c.name()), data_type(c.type), index_info(c.idx_info), column_kind(c.kind));
}
schema_builder& schema_builder::with_column(bytes name, data_type type, column_kind kind) {
return with_column(name, type, index_info(), kind);
}
schema_builder& schema_builder::with_column(bytes name, data_type type, index_info info, column_kind kind) {
_raw._columns.emplace_back(name, type, kind, info);
return *this;
}
schema_ptr schema_builder::build() {
return make_lw_shared<schema>(schema(_raw));
}