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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-14 13:40:54 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-14 13:40:54 +0000 |
commit | 317c0644ccf108aa23ef3fd8358bd66c2840bfc0 (patch) | |
tree | c417b3d25c86b775989cb5ac042f37611b626c8a /tests/modules/scan.c | |
parent | Initial commit. (diff) | |
download | redis-317c0644ccf108aa23ef3fd8358bd66c2840bfc0.tar.xz redis-317c0644ccf108aa23ef3fd8358bd66c2840bfc0.zip |
Adding upstream version 5:7.2.4.upstream/5%7.2.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | tests/modules/scan.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/tests/modules/scan.c b/tests/modules/scan.c new file mode 100644 index 0000000..1723d30 --- /dev/null +++ b/tests/modules/scan.c @@ -0,0 +1,121 @@ +#include "redismodule.h" + +#include <string.h> +#include <assert.h> +#include <unistd.h> + +typedef struct { + size_t nkeys; +} scan_strings_pd; + +void scan_strings_callback(RedisModuleCtx *ctx, RedisModuleString* keyname, RedisModuleKey* key, void *privdata) { + scan_strings_pd* pd = privdata; + int was_opened = 0; + if (!key) { + key = RedisModule_OpenKey(ctx, keyname, REDISMODULE_READ); + was_opened = 1; + } + + if (RedisModule_KeyType(key) == REDISMODULE_KEYTYPE_STRING) { + size_t len; + char * data = RedisModule_StringDMA(key, &len, REDISMODULE_READ); + RedisModule_ReplyWithArray(ctx, 2); + RedisModule_ReplyWithString(ctx, keyname); + RedisModule_ReplyWithStringBuffer(ctx, data, len); + pd->nkeys++; + } + if (was_opened) + RedisModule_CloseKey(key); +} + +int scan_strings(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) +{ + REDISMODULE_NOT_USED(argv); + REDISMODULE_NOT_USED(argc); + scan_strings_pd pd = { + .nkeys = 0, + }; + + RedisModule_ReplyWithArray(ctx, REDISMODULE_POSTPONED_LEN); + + RedisModuleScanCursor* cursor = RedisModule_ScanCursorCreate(); + while(RedisModule_Scan(ctx, cursor, scan_strings_callback, &pd)); + RedisModule_ScanCursorDestroy(cursor); + + RedisModule_ReplySetArrayLength(ctx, pd.nkeys); + return REDISMODULE_OK; +} + +typedef struct { + RedisModuleCtx *ctx; + size_t nreplies; +} scan_key_pd; + +void scan_key_callback(RedisModuleKey *key, RedisModuleString* field, RedisModuleString* value, void *privdata) { + REDISMODULE_NOT_USED(key); + scan_key_pd* pd = privdata; + RedisModule_ReplyWithArray(pd->ctx, 2); + size_t fieldCStrLen; + + // The implementation of RedisModuleString is robj with lots of encodings. + // We want to make sure the robj that passes to this callback in + // String encoded, this is why we use RedisModule_StringPtrLen and + // RedisModule_ReplyWithStringBuffer instead of directly use + // RedisModule_ReplyWithString. + const char* fieldCStr = RedisModule_StringPtrLen(field, &fieldCStrLen); + RedisModule_ReplyWithStringBuffer(pd->ctx, fieldCStr, fieldCStrLen); + if(value){ + size_t valueCStrLen; + const char* valueCStr = RedisModule_StringPtrLen(value, &valueCStrLen); + RedisModule_ReplyWithStringBuffer(pd->ctx, valueCStr, valueCStrLen); + } else { + RedisModule_ReplyWithNull(pd->ctx); + } + + pd->nreplies++; +} + +int scan_key(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) +{ + if (argc != 2) { + RedisModule_WrongArity(ctx); + return REDISMODULE_OK; + } + scan_key_pd pd = { + .ctx = ctx, + .nreplies = 0, + }; + + RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ); + if (!key) { + RedisModule_ReplyWithError(ctx, "not found"); + return REDISMODULE_OK; + } + + RedisModule_ReplyWithArray(ctx, REDISMODULE_POSTPONED_ARRAY_LEN); + + RedisModuleScanCursor* cursor = RedisModule_ScanCursorCreate(); + while(RedisModule_ScanKey(key, cursor, scan_key_callback, &pd)); + RedisModule_ScanCursorDestroy(cursor); + + RedisModule_ReplySetArrayLength(ctx, pd.nreplies); + RedisModule_CloseKey(key); + return REDISMODULE_OK; +} + +int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) { + REDISMODULE_NOT_USED(argv); + REDISMODULE_NOT_USED(argc); + if (RedisModule_Init(ctx, "scan", 1, REDISMODULE_APIVER_1)== REDISMODULE_ERR) + return REDISMODULE_ERR; + + if (RedisModule_CreateCommand(ctx, "scan.scan_strings", scan_strings, "", 0, 0, 0) == REDISMODULE_ERR) + return REDISMODULE_ERR; + + if (RedisModule_CreateCommand(ctx, "scan.scan_key", scan_key, "", 0, 0, 0) == REDISMODULE_ERR) + return REDISMODULE_ERR; + + return REDISMODULE_OK; +} + + |