1 /*
2 * SysDB - src/parser/ast.c
3 * Copyright (C) 2013-2015 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #include "core/store.h"
30 #include "parser/ast.h"
32 #include <ctype.h>
33 #include <stdlib.h>
34 #include <string.h>
36 /*
37 * data types
38 */
40 static void
41 op_destroy(sdb_object_t *obj)
42 {
43 sdb_ast_op_t *op = SDB_AST_OP(obj);
44 sdb_object_deref(SDB_OBJ(op->left));
45 sdb_object_deref(SDB_OBJ(op->right));
46 op->left = op->right = NULL;
47 } /* op_destroy */
49 static void
50 iter_destroy(sdb_object_t *obj)
51 {
52 sdb_ast_iter_t *iter = SDB_AST_ITER(obj);
53 sdb_object_deref(SDB_OBJ(iter->iter));
54 sdb_object_deref(SDB_OBJ(iter->expr));
55 iter->iter = iter->expr = NULL;
56 } /* iter_destroy */
58 static void
59 typed_destroy(sdb_object_t *obj)
60 {
61 sdb_ast_typed_t *typed = SDB_AST_TYPED(obj);
62 sdb_object_deref(SDB_OBJ(typed->expr));
63 typed->expr = NULL;
64 } /* typed_destroy */
66 static void
67 const_destroy(sdb_object_t *obj)
68 {
69 sdb_ast_const_t *c = SDB_AST_CONST(obj);
70 sdb_data_free_datum(&c->value);
71 } /* const_destroy */
73 static void
74 value_destroy(sdb_object_t *obj)
75 {
76 sdb_ast_value_t *value = SDB_AST_VALUE(obj);
77 if (value->name)
78 free(value->name);
79 value->name = NULL;
80 } /* value_destroy */
82 static void
83 fetch_destroy(sdb_object_t *obj)
84 {
85 sdb_ast_fetch_t *fetch = SDB_AST_FETCH(obj);
86 if (fetch->hostname)
87 free(fetch->hostname);
88 if (fetch->parent)
89 free(fetch->parent);
90 if (fetch->name)
91 free(fetch->name);
92 fetch->hostname = fetch->name = NULL;
94 sdb_object_deref(SDB_OBJ(fetch->filter));
95 fetch->filter = NULL;
96 } /* fetch_destroy */
98 static void
99 list_destroy(sdb_object_t *obj)
100 {
101 sdb_ast_list_t *list = SDB_AST_LIST(obj);
102 sdb_object_deref(SDB_OBJ(list->filter));
103 list->filter = NULL;
104 } /* list_destroy */
106 static void
107 lookup_destroy(sdb_object_t *obj)
108 {
109 sdb_ast_lookup_t *lookup = SDB_AST_LOOKUP(obj);
110 sdb_object_deref(SDB_OBJ(lookup->matcher));
111 sdb_object_deref(SDB_OBJ(lookup->filter));
112 lookup->matcher = lookup->filter = NULL;
113 } /* lookup_destroy */
115 static void
116 store_destroy(sdb_object_t *obj)
117 {
118 sdb_ast_store_t *store = SDB_AST_STORE(obj);
119 if (store->hostname)
120 free(store->hostname);
121 if (store->parent)
122 free(store->parent);
123 if (store->name)
124 free(store->name);
125 store->hostname = store->parent = store->name = NULL;
127 if (store->store_type)
128 free(store->store_type);
129 if (store->store_id)
130 free(store->store_id);
131 store->store_type = store->store_id = NULL;
133 sdb_data_free_datum(&store->value);
134 } /* store_destroy */
136 static void
137 timeseries_destroy(sdb_object_t *obj)
138 {
139 sdb_ast_timeseries_t *timeseries = SDB_AST_TIMESERIES(obj);
140 if (timeseries->hostname)
141 free(timeseries->hostname);
142 if (timeseries->metric)
143 free(timeseries->metric);
144 if (timeseries->data_names) {
145 size_t i;
146 for (i = 0; i < timeseries->data_names_len; i++)
147 free(timeseries->data_names[i]);
148 free(timeseries->data_names);
149 timeseries->data_names = NULL;
150 }
151 timeseries->hostname = timeseries->metric = NULL;
152 } /* timeseries_destroy */
154 static sdb_type_t op_type = {
155 /* size */ sizeof(sdb_ast_op_t),
156 /* init */ NULL,
157 /* destroy */ op_destroy,
158 };
160 static sdb_type_t iter_type = {
161 /* size */ sizeof(sdb_ast_iter_t),
162 /* init */ NULL,
163 /* destroy */ iter_destroy,
164 };
166 static sdb_type_t typed_type = {
167 /* size */ sizeof(sdb_ast_typed_t),
168 /* init */ NULL,
169 /* destroy */ typed_destroy,
170 };
172 static sdb_type_t const_type = {
173 /* size */ sizeof(sdb_ast_const_t),
174 /* init */ NULL,
175 /* destroy */ const_destroy,
176 };
178 static sdb_type_t value_type = {
179 /* size */ sizeof(sdb_ast_value_t),
180 /* init */ NULL,
181 /* destroy */ value_destroy,
182 };
184 static sdb_type_t fetch_type = {
185 /* size */ sizeof(sdb_ast_fetch_t),
186 /* init */ NULL,
187 /* destroy */ fetch_destroy,
188 };
190 static sdb_type_t list_type = {
191 /* size */ sizeof(sdb_ast_list_t),
192 /* init */ NULL,
193 /* destroy */ list_destroy,
194 };
196 static sdb_type_t lookup_type = {
197 /* size */ sizeof(sdb_ast_lookup_t),
198 /* init */ NULL,
199 /* destroy */ lookup_destroy,
200 };
202 static sdb_type_t st_type = {
203 /* size */ sizeof(sdb_ast_store_t),
204 /* init */ NULL,
205 /* destroy */ store_destroy,
206 };
208 static sdb_type_t ts_type = {
209 /* size */ sizeof(sdb_ast_timeseries_t),
210 /* init */ NULL,
211 /* destroy */ timeseries_destroy,
212 };
214 /*
215 * public API
216 */
218 sdb_ast_node_t *
219 sdb_ast_op_create(int kind, sdb_ast_node_t *left, sdb_ast_node_t *right)
220 {
221 sdb_ast_op_t *op;
222 op = SDB_AST_OP(sdb_object_create(SDB_AST_OP_TO_STRING(kind), op_type));
223 if (! op)
224 return NULL;
226 op->super.type = SDB_AST_TYPE_OPERATOR;
228 op->kind = kind;
229 op->left = left;
230 op->right = right;
231 return SDB_AST_NODE(op);
232 } /* sdb_ast_op_create */
234 sdb_ast_node_t *
235 sdb_ast_iter_create(int kind, sdb_ast_node_t *iter, sdb_ast_node_t *expr)
236 {
237 sdb_ast_iter_t *i;
238 i = SDB_AST_ITER(sdb_object_create(SDB_AST_OP_TO_STRING(kind), iter_type));
239 if (! i)
240 return NULL;
242 i->super.type = SDB_AST_TYPE_ITERATOR;
244 i->kind = kind;
245 i->iter = iter;
246 i->expr = expr;
247 return SDB_AST_NODE(i);
248 } /* sdb_ast_iter_create */
250 sdb_ast_node_t *
251 sdb_ast_typed_create(int type, sdb_ast_node_t *expr)
252 {
253 char name[32];
254 sdb_ast_typed_t *typed;
255 size_t i;
257 strncpy(name, SDB_STORE_TYPE_TO_NAME(type), sizeof(name));
258 for (i = 0; i < strlen(name); ++i)
259 name[i] = (char)toupper((int)name[i]);
260 typed = SDB_AST_TYPED(sdb_object_create(name, typed_type));
261 if (! typed)
262 return NULL;
264 typed->super.type = SDB_AST_TYPE_TYPED;
266 typed->type = type;
267 typed->expr = expr;
268 return SDB_AST_NODE(typed);
269 } /* sdb_ast_typed_create */
271 sdb_ast_node_t *
272 sdb_ast_const_create(sdb_data_t value)
273 {
274 sdb_ast_const_t *c;
275 c = SDB_AST_CONST(sdb_object_create("CONST", const_type));
276 if (! c)
277 return NULL;
279 c->super.type = SDB_AST_TYPE_CONST;
281 c->value = value;
282 return SDB_AST_NODE(c);
283 } /* sdb_ast_const_create */
285 sdb_ast_node_t *
286 sdb_ast_value_create(int type, char *name)
287 {
288 sdb_ast_value_t *value;
289 value = SDB_AST_VALUE(sdb_object_create("VALUE", value_type));
290 if (! value)
291 return NULL;
293 value->super.type = SDB_AST_TYPE_VALUE;
295 value->type = type;
296 value->name = name;
297 return SDB_AST_NODE(value);
298 } /* sdb_ast_value_create */
300 sdb_ast_node_t *
301 sdb_ast_fetch_create(int obj_type, char *hostname,
302 int parent_type, char *parent, char *name,
303 bool full, sdb_ast_node_t *filter)
304 {
305 sdb_ast_fetch_t *fetch;
306 fetch = SDB_AST_FETCH(sdb_object_create("FETCH", fetch_type));
307 if (! fetch)
308 return NULL;
310 fetch->super.type = SDB_AST_TYPE_FETCH;
312 fetch->obj_type = obj_type;
313 fetch->hostname = hostname;
314 fetch->parent_type = parent_type;
315 fetch->parent = parent;
316 fetch->name = name;
317 fetch->full = full;
318 fetch->filter = filter;
319 return SDB_AST_NODE(fetch);
320 } /* sdb_ast_fetch_create */
322 sdb_ast_node_t *
323 sdb_ast_list_create(int obj_type, sdb_ast_node_t *filter)
324 {
325 sdb_ast_list_t *list;
326 list = SDB_AST_LIST(sdb_object_create("LIST", list_type));
327 if (! list)
328 return NULL;
330 list->super.type = SDB_AST_TYPE_LIST;
332 list->obj_type = obj_type;
333 list->filter = filter;
334 return SDB_AST_NODE(list);
335 } /* sdb_ast_list_create */
337 sdb_ast_node_t *
338 sdb_ast_lookup_create(int obj_type, sdb_ast_node_t *matcher,
339 sdb_ast_node_t *filter)
340 {
341 sdb_ast_lookup_t *lookup;
342 lookup = SDB_AST_LOOKUP(sdb_object_create("LOOKUP", lookup_type));
343 if (! lookup)
344 return NULL;
346 lookup->super.type = SDB_AST_TYPE_LOOKUP;
348 lookup->obj_type = obj_type;
349 lookup->matcher = matcher;
350 lookup->filter = filter;
351 return SDB_AST_NODE(lookup);
352 } /* sdb_ast_lookup_create */
354 sdb_ast_node_t *
355 sdb_ast_store_create(int obj_type, char *hostname,
356 int parent_type, char *parent, char *name, sdb_time_t last_update,
357 char *store_type, char *store_id, sdb_time_t store_last_update,
358 sdb_data_t value)
359 {
360 sdb_ast_store_t *store;
361 store = SDB_AST_STORE(sdb_object_create("STORE", st_type));
362 if (! store)
363 return NULL;
365 store->super.type = SDB_AST_TYPE_STORE;
367 store->obj_type = obj_type;
368 store->hostname = hostname;
369 store->parent_type = parent_type;
370 store->parent = parent;
371 store->name = name;
372 store->last_update = last_update;
373 store->store_type = store_type;
374 store->store_id = store_id;
375 store->store_last_update = store_last_update;
376 store->value = value;
377 return SDB_AST_NODE(store);
378 } /* sdb_ast_store_create */
380 sdb_ast_node_t *
381 sdb_ast_timeseries_create(char *hostname, char *metric,
382 char **data_names, size_t data_names_len,
383 sdb_time_t start, sdb_time_t end)
384 {
385 sdb_ast_timeseries_t *timeseries;
386 timeseries = SDB_AST_TIMESERIES(sdb_object_create("TIMESERIES", ts_type));
387 if (! timeseries)
388 return NULL;
390 timeseries->super.type = SDB_AST_TYPE_TIMESERIES;
392 timeseries->hostname = hostname;
393 timeseries->metric = metric;
394 timeseries->data_names = data_names;
395 timeseries->data_names_len = data_names_len;
396 timeseries->start = start;
397 timeseries->end = end;
398 return SDB_AST_NODE(timeseries);
399 } /* sdb_ast_timeseries_create */
401 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */