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03d144a452
Replaces Redis => Redict API References: https://codeberg.org/redict/redict/issues/21 Signed-off-by: Drew DeVault <sir@cmpwn.com>
98 lines
3.6 KiB
C
98 lines
3.6 KiB
C
// SPDX-FileCopyrightText: 2024 Redict Contributors
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// SPDX-FileCopyrightText: 2024 Salvatore Sanfilippo <antirez at gmail dot com>
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//
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// SPDX-License-Identifier: BSD-3-Clause
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// SPDX-License-Identifier: LGPL-3.0-only
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#include "redictmodule.h"
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#include <math.h>
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#include <errno.h>
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/* ZSET.REM key element
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*
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* Removes an occurrence of an element from a sorted set. Replies with the
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* number of removed elements (0 or 1).
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*/
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int zset_rem(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
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if (argc != 3) return RedictModule_WrongArity(ctx);
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RedictModule_AutoMemory(ctx);
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int keymode = REDICTMODULE_READ | REDICTMODULE_WRITE;
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RedictModuleKey *key = RedictModule_OpenKey(ctx, argv[1], keymode);
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int deleted;
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if (RedictModule_ZsetRem(key, argv[2], &deleted) == REDICTMODULE_OK)
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return RedictModule_ReplyWithLongLong(ctx, deleted);
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else
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return RedictModule_ReplyWithError(ctx, "ERR ZsetRem failed");
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}
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/* ZSET.ADD key score member
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*
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* Adds a specified member with the specified score to the sorted
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* set stored at key.
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*/
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int zset_add(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
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if (argc != 4) return RedictModule_WrongArity(ctx);
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RedictModule_AutoMemory(ctx);
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int keymode = REDICTMODULE_READ | REDICTMODULE_WRITE;
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RedictModuleKey *key = RedictModule_OpenKey(ctx, argv[1], keymode);
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size_t len;
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double score;
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char *endptr;
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const char *str = RedictModule_StringPtrLen(argv[2], &len);
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score = strtod(str, &endptr);
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if (*endptr != '\0' || errno == ERANGE)
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return RedictModule_ReplyWithError(ctx, "value is not a valid float");
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if (RedictModule_ZsetAdd(key, score, argv[3], NULL) == REDICTMODULE_OK)
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return RedictModule_ReplyWithSimpleString(ctx, "OK");
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else
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return RedictModule_ReplyWithError(ctx, "ERR ZsetAdd failed");
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}
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/* ZSET.INCRBY key member increment
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*
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* Increments the score stored at member in the sorted set stored at key by increment.
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* Replies with the new score of this element.
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*/
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int zset_incrby(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
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if (argc != 4) return RedictModule_WrongArity(ctx);
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RedictModule_AutoMemory(ctx);
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int keymode = REDICTMODULE_READ | REDICTMODULE_WRITE;
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RedictModuleKey *key = RedictModule_OpenKey(ctx, argv[1], keymode);
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size_t len;
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double score, newscore;
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char *endptr;
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const char *str = RedictModule_StringPtrLen(argv[3], &len);
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score = strtod(str, &endptr);
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if (*endptr != '\0' || errno == ERANGE)
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return RedictModule_ReplyWithError(ctx, "value is not a valid float");
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if (RedictModule_ZsetIncrby(key, score, argv[2], NULL, &newscore) == REDICTMODULE_OK)
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return RedictModule_ReplyWithDouble(ctx, newscore);
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else
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return RedictModule_ReplyWithError(ctx, "ERR ZsetIncrby failed");
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}
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int RedictModule_OnLoad(RedictModuleCtx *ctx, RedictModuleString **argv, int argc) {
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REDICTMODULE_NOT_USED(argv);
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REDICTMODULE_NOT_USED(argc);
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if (RedictModule_Init(ctx, "zset", 1, REDICTMODULE_APIVER_1) == REDICTMODULE_ERR)
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return REDICTMODULE_ERR;
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if (RedictModule_CreateCommand(ctx, "zset.rem", zset_rem, "write",
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1, 1, 1) == REDICTMODULE_ERR)
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return REDICTMODULE_ERR;
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if (RedictModule_CreateCommand(ctx, "zset.add", zset_add, "write",
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1, 1, 1) == REDICTMODULE_ERR)
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return REDICTMODULE_ERR;
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if (RedictModule_CreateCommand(ctx, "zset.incrby", zset_incrby, "write",
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1, 1, 1) == REDICTMODULE_ERR)
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return REDICTMODULE_ERR;
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return REDICTMODULE_OK;
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}
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