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sciworkerd: avoid spawning several tasks
author David Demelier <markand@malikania.fr>
date Thu, 09 Mar 2023 10:43:48 +0100
parents 71cd8447e3a4
children
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1 /*
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2 * crud.c -- convenient helpers for page-api-*
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3 *
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4 * Copyright (c) 2021-2023 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
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19 #include <assert.h>
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20
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21 #include "crud.h"
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22 #include "log.h"
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23 #include "pageutil.h"
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25 static int
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26 save(struct kreq *r, int (*saver)(json_t *), const char *topic)
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27 {
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28 json_t *doc;
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29 json_error_t err;
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30 int ret = -1;
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32 if (!(doc = json_loads(r->fields[0].val, 0, &err)))
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33 log_warn("crud: %s: invalid JSON input: %s", topic, err.text);
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34 else {
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35 if (saver(doc) < 0)
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36 log_warn("crud: %s: database insertion failed", topic);
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37 else
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38 ret = 0;
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39
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40 json_decref(doc);
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41 }
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42
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43 return ret;
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44 }
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45
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46 void
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47 crud_insert(struct kreq *r, int (*saver)(json_t *), const char *topic)
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48 {
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49 assert(r);
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50 assert(saver);
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51 assert(topic);
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52
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53 if (r->fieldsz < 1)
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54 pageutil_json(r, KHTTP_400, NULL);
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55 else if (save(r, saver, topic) < 0)
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56 pageutil_json(r, KHTTP_500, NULL);
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57 else
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58 /* TODO: Maybe we should send the updated model. */
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59 pageutil_json(r, KHTTP_200, NULL);
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60 }
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62 void
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63 crud_list(struct kreq *r, json_t *doc)
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64 {
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65 assert(r);
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66
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67 if (!doc)
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68 pageutil_json(r, KHTTP_500, NULL);
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69 else
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70 pageutil_json(r, KHTTP_200, doc);
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71 }