static void validate(RedisModuleCtx *ctx, RedisModuleCallReply *reply, RedisModuleString *password)
{
const char *reply_str;
size_t reply_len;
const char *pass;
size_t pass_len;
const char *crypt_pass;
size_t crypt_pass_len;
char crypt_buf[64];
if (RedisModule_CallReplyType(reply) == REDISMODULE_REPLY_NULL) {
RedisModule_ReplyWithLongLong(ctx, 0);
return;
}
if (RedisModule_CallReplyType(reply) != REDISMODULE_REPLY_STRING) {
RedisModule_ReplyWithError(ctx, "WRONGTYPE Operation against a key holding the wrong kind of value");
return;
}
reply_str = RedisModule_CallReplyStringPtr(reply, &reply_len);
pass = RedisModule_StringPtrLen(password, &pass_len);
crypt_pass = crypt_rn(pass, reply_str, crypt_buf, sizeof(crypt_buf));
if (!crypt_pass) {
RedisModule_ReplyWithError(ctx, "ERR hash error");
return;
}
crypt_pass_len = strlen(crypt_pass);
if (crypt_pass_len == reply_len && !memcmp(reply_str, crypt_pass, crypt_pass_len)) {
RedisModule_ReplyWithLongLong(ctx, 1);
} else {
RedisModule_ReplyWithLongLong(ctx, 0);
}
}
/* HELLOTYPE.INSERT key value */
int HelloTypeInsert_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
if (argc != 3) return RedisModule_WrongArity(ctx);
RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY &&
RedisModule_ModuleTypeGetType(key) != HelloType)
{
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
long long value;
if ((RedisModule_StringToLongLong(argv[2],&value) != REDISMODULE_OK)) {
return RedisModule_ReplyWithError(ctx,"ERR invalid value: must be a signed 64 bit integer");
}
/* Create an empty value object if the key is currently empty. */
struct HelloTypeObject *hto;
if (type == REDISMODULE_KEYTYPE_EMPTY) {
hto = createHelloTypeObject();
RedisModule_ModuleTypeSetValue(key,HelloType,hto);
} else {
hto = RedisModule_ModuleTypeGetValue(key);
}
/* Insert the new element. */
HelloTypeInsert(hto,value);
RedisModule_ReplyWithLongLong(ctx,hto->len);
RedisModule_ReplicateVerbatim(ctx);
return REDISMODULE_OK;
}
/* Another command to show replication. In this case, we call
* RedisModule_ReplicateVerbatim() to mean we want just the command to be
* propagated to slaves / AOF exactly as it was called by the user.
*
* This command also shows how to work with string objects.
* It takes a list, and increments all the elements (that must have
* a numerical value) by 1, returning the sum of all the elements
* as reply.
*
* Usage: HELLO.REPL2 <list-key> */
int HelloRepl2_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
if (argc != 2) return RedisModule_WrongArity(ctx);
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
if (RedisModule_KeyType(key) != REDISMODULE_KEYTYPE_LIST)
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
size_t listlen = RedisModule_ValueLength(key);
long long sum = 0;
/* Rotate and increment. */
while(listlen--) {
RedisModuleString *ele = RedisModule_ListPop(key,REDISMODULE_LIST_TAIL);
long long val;
if (RedisModule_StringToLongLong(ele,&val) != REDISMODULE_OK) val = 0;
val++;
sum += val;
RedisModuleString *newele = RedisModule_CreateStringFromLongLong(ctx,val);
RedisModule_ListPush(key,REDISMODULE_LIST_HEAD,newele);
}
RedisModule_ReplyWithLongLong(ctx,sum);
RedisModule_ReplicateVerbatim(ctx);
return REDISMODULE_OK;
}
int UniqueLenCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
if (argc != 2) {
return RedisModule_WrongArity(ctx);
}
RedisModule_AutoMemory(ctx);
// open the key and make sure it is indeed a Hash and not empty
RedisModuleKey *key =
RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ);
int type = RedisModule_KeyType(key);
if (type == REDISMODULE_KEYTYPE_EMPTY) {
RedisModule_ReplyWithNull(ctx);
return REDISMODULE_OK;
}
if (RedisModule_ModuleTypeGetType(key) != UniqueType) {
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
unique *unique = RedisModule_ModuleTypeGetValue(key);
size_t len = uniqueLen(unique);
RedisModule_ReplyWithLongLong(ctx, len);
return REDISMODULE_OK;
}
/* This is a simple command to test replication. Because of the "!" modified
* in the RedisModule_Call() call, the two INCRs get replicated.
* Also note how the ECHO is replicated in an unexpected position (check
* comments the function implementation). */
int HelloRepl1_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc)
{
RedisModuleCallReply *reply;
RedisModule_AutoMemory(ctx);
/* This will be replicated *after* the two INCR statements, since
* the Call() replication has precedence, so the actual replication
* stream will be:
*
* MULTI
* INCR foo
* INCR bar
* ECHO c foo
* EXEC
*/
RedisModule_Replicate(ctx,"ECHO","c","foo");
/* Using the "!" modifier we replicate the command if it
* modified the dataset in some way. */
reply = RedisModule_Call(ctx,"INCR","c!","foo");
reply = RedisModule_Call(ctx,"INCR","c!","bar");
RedisModule_ReplyWithLongLong(ctx,0);
return REDISMODULE_OK;
}
/* HELLOTYPE.RANGE key first count */
int HelloTypeRange_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
if (argc != 4) return RedisModule_WrongArity(ctx);
RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY &&
RedisModule_ModuleTypeGetType(key) != HelloType)
{
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
long long first, count;
if (RedisModule_StringToLongLong(argv[2],&first) != REDISMODULE_OK ||
RedisModule_StringToLongLong(argv[3],&count) != REDISMODULE_OK ||
first < 0 || count < 0)
{
return RedisModule_ReplyWithError(ctx,
"ERR invalid first or count parameters");
}
struct HelloTypeObject *hto = RedisModule_ModuleTypeGetValue(key);
struct HelloTypeNode *node = hto ? hto->head : NULL;
RedisModule_ReplyWithArray(ctx,REDISMODULE_POSTPONED_ARRAY_LEN);
long long arraylen = 0;
while(node && count--) {
RedisModule_ReplyWithLongLong(ctx,node->value);
arraylen++;
node = node->next;
}
RedisModule_ReplySetArrayLength(ctx,arraylen);
return REDISMODULE_OK;
}
static void PopReplyFV(RedisModuleCtx *ctx, sds skey, sds sval) {
int i, n = sdslen(sval)/8;
RedisModule_ReplyWithArray(ctx, 1+n);
RedisModule_ReplyWithStringBuffer(ctx, skey, sdslen(skey));
long long *pvec = (long long*)sval;
for (i=0; i<n; i++) {
RedisModule_ReplyWithLongLong(ctx, pvec[i]);
}
}
/*
## FT.SUGDEL key str
Delete a string from a suggestion index.
### Parameters:
- key: the suggestion dictionary key.
- str: the string to delete
### Returns:
Integer reply: 1 if the string was found and deleted, 0 otherwise.
*/
int RSSuggestDelCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
if (argc != 3) return RedisModule_WrongArity(ctx);
RedisModule_ReplicateVerbatim(ctx);
RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY && RedisModule_ModuleTypeGetType(key) != TrieType) {
return RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
}
Trie *tree = RedisModule_ModuleTypeGetValue(key);
if (!tree) {
return RedisModule_ReplyWithLongLong(ctx, 0);
}
size_t len;
const char *str = RedisModule_StringPtrLen(argv[2], &len);
return RedisModule_ReplyWithLongLong(ctx, Trie_Delete(tree, str, len));
}
/* HELLO.PUSH.CALL implements RPUSH using an higher level approach, calling
* a Redis command instead of working with the key in a low level way. This
* approach is useful when you need to call Redis commands that are not
* available as low level APIs, or when you don't need the maximum speed
* possible but instead prefer implementation simplicity. */
int HelloPushCall_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc)
{
if (argc != 3) return RedisModule_WrongArity(ctx);
RedisModuleCallReply *reply;
reply = RedisModule_Call(ctx,"RPUSH","ss",argv[1],argv[2]);
long long len = RedisModule_CallReplyInteger(reply);
RedisModule_FreeCallReply(reply);
RedisModule_ReplyWithLongLong(ctx,len);
return REDISMODULE_OK;
}
int UniquePushIVCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
if (argc < 4) {
return RedisModule_WrongArity(ctx);
}
RedisModule_AutoMemory(ctx);
// open the key and make sure it is indeed a Hash and not empty
RedisModuleKey *key =
RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ | REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY &&
RedisModule_ModuleTypeGetType(key) != UniqueType)
{
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
unique *unique;
if (type == REDISMODULE_KEYTYPE_EMPTY) {
unique = uniqueCreate();
RedisModule_ModuleTypeSetValue(key,UniqueType,unique);
} else {
unique = RedisModule_ModuleTypeGetValue(key);
}
sds skey, sval;
size_t skeylen, svallen;
const char *pkey;
unsigned int lvec = argc-3;
pkey = RedisModule_StringPtrLen(argv[2], &skeylen);
svallen = lvec *8;
skey = sdsnewlen(pkey, skeylen);
sval = sdsnewlen(NULL, svallen);
long long *vec = (long long*)sval;
int i;
for (i=3; i<argc; i++) {
if (REDISMODULE_OK != RedisModule_StringToLongLong(argv[i], vec+i-3)) {
return RedisModule_WrongArity(ctx);
}
}
int n = uniquePush(unique, skey, sval, merge_int64);
if (n == -1) {
RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
} else {
RedisModule_ReplyWithLongLong(ctx, n);
}
RedisModule_ReplicateVerbatim(ctx);
return REDISMODULE_OK;
}
/*
## FT.SUGLEN key
Get the size of an autoc-complete suggestion dictionary
### Parameters:
- key: the suggestion dictionary key.
### Returns:
Integer reply: the current size of the suggestion dictionary.
*/
int RSSuggestLenCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
if (argc != 2) return RedisModule_WrongArity(ctx);
RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY && RedisModule_ModuleTypeGetType(key) != TrieType) {
return RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
}
Trie *tree = RedisModule_ModuleTypeGetValue(key);
return RedisModule_ReplyWithLongLong(ctx, tree ? tree->size : 0);
}
/* HELLO.PUSH.NATIVE re-implements RPUSH, and shows the low level modules API
* where you can "open" keys, make low level operations, create new keys by
* pushing elements into non-existing keys, and so forth.
*
* You'll find this command to be roughly as fast as the actual RPUSH
* command. */
int HelloPushNative_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc)
{
if (argc != 3) return RedisModule_WrongArity(ctx);
RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
RedisModule_ListPush(key,REDISMODULE_LIST_TAIL,argv[2]);
size_t newlen = RedisModule_ValueLength(key);
RedisModule_CloseKey(key);
RedisModule_ReplyWithLongLong(ctx,newlen);
return REDISMODULE_OK;
}
/*
## FT.SUGGADD key string score [INCR] [PAYLOAD {payload}]
Add a suggestion string to an auto-complete suggestion dictionary. This is
disconnected from the
index definitions, and leaves creating and updating suggestino dictionaries to
the user.
### Parameters:
- key: the suggestion dictionary key.
- string: the suggestion string we index
- score: a floating point number of the suggestion string's weight
-INCR: if set, we increment the existing entry of the suggestion by the
given
score, instead
of
replacing the score. This is useful for updating the dictionary based on
user queries in
real
time
- PAYLOAD: Add a payload to the suggestion string that will be used as additional information.
### Returns:
Integer reply: the current size of the suggestion dictionary.
*/
int RSSuggestAddCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
if (argc < 4 || argc > 7) {
return RedisModule_WrongArity(ctx);
}
int incr = 0, rv = AC_OK;
RSPayload payload = {0};
ArgsCursor ac = {0};
ArgsCursor_InitRString(&ac, argv + 4, argc - 4);
while (!AC_IsAtEnd(&ac)) {
const char *s = AC_GetStringNC(&ac, NULL);
if (!strcasecmp(s, "INCR")) {
incr = 1;
} else if (!strcasecmp(s, "PAYLOAD")) {
if ((rv = AC_GetString(&ac, (const char **)&payload.data, &payload.len, 0)) != AC_OK) {
return RMUtil_ReplyWithErrorFmt(ctx, "Invalid payload: %s", AC_Strerror(rv));
}
} else {
return RMUtil_ReplyWithErrorFmt(ctx, "Unknown argument `%s`", s);
}
}
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ | REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY && RedisModule_ModuleTypeGetType(key) != TrieType) {
return RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
}
RedisModuleString *val = argv[2];
double score;
if ((RedisModule_StringToDouble(argv[3], &score) != REDISMODULE_OK)) {
return RedisModule_ReplyWithError(ctx, "ERR invalid score");
}
/* Create an empty value object if the key is currently empty. */
Trie *tree;
if (type == REDISMODULE_KEYTYPE_EMPTY) {
tree = NewTrie();
RedisModule_ModuleTypeSetValue(key, TrieType, tree);
} else {
tree = RedisModule_ModuleTypeGetValue(key);
}
/* Insert the new element. */
Trie_Insert(tree, val, score, incr, &payload);
RedisModule_ReplyWithLongLong(ctx, tree->size);
RedisModule_ReplicateVerbatim(ctx);
return REDISMODULE_OK;
}
/* HELLO.RAND.ARRAY <count>
* Shows how to generate arrays as commands replies.
* It just outputs <count> random numbers. */
int HelloRandArray_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
if (argc != 2) return RedisModule_WrongArity(ctx);
long long count;
if (RedisModule_StringToLongLong(argv[1],&count) != REDISMODULE_OK ||
count < 0)
return RedisModule_ReplyWithError(ctx,"ERR invalid count");
/* To reply with an array, we call RedisModule_ReplyWithArray() followed
* by other "count" calls to other reply functions in order to generate
* the elements of the array. */
RedisModule_ReplyWithArray(ctx,count);
while(count--) RedisModule_ReplyWithLongLong(ctx,rand());
return REDISMODULE_OK;
}
/* HELLOTYPE.LEN key */
int HelloTypeLen_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
if (argc != 2) return RedisModule_WrongArity(ctx);
RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY &&
RedisModule_ModuleTypeGetType(key) != HelloType)
{
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
struct HelloTypeObject *hto = RedisModule_ModuleTypeGetValue(key);
RedisModule_ReplyWithLongLong(ctx,hto ? hto->len : 0);
return REDISMODULE_OK;
}
void SpellCheck_Reply(SpellCheckCtx *scCtx, QueryAST *q) {
if (!SpellCheck_CheckTermDictsExistance(scCtx)) {
return;
}
RedisModule_ReplyWithArray(scCtx->sctx->redisCtx, REDISMODULE_POSTPONED_ARRAY_LEN);
if (scCtx->fullScoreInfo) {
// sending the total number of docs for the ability to calculate score on cluster
RedisModule_ReplyWithLongLong(scCtx->sctx->redisCtx, scCtx->sctx->spec->docs.size - 1);
}
QueryNode_ForEach(q->root, forEachCallback, scCtx, 1);
RedisModule_ReplySetArrayLength(scCtx->sctx->redisCtx,
scCtx->results + (scCtx->fullScoreInfo ? 1 : 0));
}
/* HELLO.LIST.SUM.LEN returns the total length of all the items inside
* a Redis list, by using the high level Call() API.
* This command is an example of the array reply access. */
int HelloListSumLen_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc)
{
if (argc != 2) return RedisModule_WrongArity(ctx);
RedisModuleCallReply *reply;
reply = RedisModule_Call(ctx,"LRANGE","sll",argv[1],(long long)0,(long long)-1);
size_t strlen = 0;
size_t items = RedisModule_CallReplyLength(reply);
size_t j;
for (j = 0; j < items; j++) {
RedisModuleCallReply *ele = RedisModule_CallReplyArrayElement(reply,j);
strlen += RedisModule_CallReplyLength(ele);
}
RedisModule_FreeCallReply(reply);
RedisModule_ReplyWithLongLong(ctx,strlen);
return REDISMODULE_OK;
}
static int UniquePushCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc, mergefn fn) {
if (argc != 4) {
return RedisModule_WrongArity(ctx);
}
RedisModule_AutoMemory(ctx);
// open the key and make sure it is indeed a Hash and not empty
RedisModuleKey *key =
RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ | REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_EMPTY &&
RedisModule_ModuleTypeGetType(key) != UniqueType)
{
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
unique *unique;
if (type == REDISMODULE_KEYTYPE_EMPTY) {
unique = uniqueCreate();
RedisModule_ModuleTypeSetValue(key,UniqueType,unique);
} else {
unique = RedisModule_ModuleTypeGetValue(key);
}
sds skey, sval;
size_t skeylen, svallen;
const char *pkey, *pval;
pkey = RedisModule_StringPtrLen(argv[2], &skeylen);
pval = RedisModule_StringPtrLen(argv[3], &svallen);
skey = sdsnewlen(pkey, skeylen);
sval = sdsnewlen(pval, svallen);
int n = uniquePush(unique, skey, sval, fn);
if (n == -1) {
RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
} else {
RedisModule_ReplyWithLongLong(ctx, n);
}
RedisModule_ReplicateVerbatim(ctx);
return REDISMODULE_OK;
}
/* HELLO.LIST.SPLICE srclist dstlist count
* Moves 'count' elements from the tail of 'srclist' to the head of
* 'dstlist'. If less than count elements are available, it moves as much
* elements as possible. */
int HelloListSplice_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
if (argc != 4) return RedisModule_WrongArity(ctx);
RedisModuleKey *srckey = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
RedisModuleKey *dstkey = RedisModule_OpenKey(ctx,argv[2],
REDISMODULE_READ|REDISMODULE_WRITE);
/* Src and dst key must be empty or lists. */
if ((RedisModule_KeyType(srckey) != REDISMODULE_KEYTYPE_LIST &&
RedisModule_KeyType(srckey) != REDISMODULE_KEYTYPE_EMPTY) ||
(RedisModule_KeyType(dstkey) != REDISMODULE_KEYTYPE_LIST &&
RedisModule_KeyType(dstkey) != REDISMODULE_KEYTYPE_EMPTY))
{
RedisModule_CloseKey(srckey);
RedisModule_CloseKey(dstkey);
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
long long count;
if ((RedisModule_StringToLongLong(argv[3],&count) != REDISMODULE_OK) ||
(count < 0)) {
RedisModule_CloseKey(srckey);
RedisModule_CloseKey(dstkey);
return RedisModule_ReplyWithError(ctx,"ERR invalid count");
}
while(count-- > 0) {
RedisModuleString *ele;
ele = RedisModule_ListPop(srckey,REDISMODULE_LIST_TAIL);
if (ele == NULL) break;
RedisModule_ListPush(dstkey,REDISMODULE_LIST_HEAD,ele);
RedisModule_FreeString(ctx,ele);
}
size_t len = RedisModule_ValueLength(srckey);
RedisModule_CloseKey(srckey);
RedisModule_CloseKey(dstkey);
RedisModule_ReplyWithLongLong(ctx,len);
return REDISMODULE_OK;
}
/*
* MSISMEMBER key1 [key2 ...] member
* Checks for membership in multiple sets.
* Reply: Integer, the count of sets to which the member belongs.
*/
int MSIsMemberCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
if (argc < 3) {
if (RedisModule_IsKeysPositionRequest(ctx))
/* TODO: handle this once the getkey-api allows signalling errors */
return REDISMODULE_OK;
else
return RedisModule_WrongArity(ctx);
}
if (RedisModule_IsKeysPositionRequest(ctx)) {
size_t i;
for (i = 1; i < argc - 1; i++) RedisModule_KeyAtPos(ctx, i);
return REDISMODULE_OK;
}
RedisModule_AutoMemory(ctx);
int iele = argc - 1;
size_t count = 0;
int i;
for (i = 1; i < iele; i++) {
RedisModuleKey *key =
RedisModule_OpenKey(ctx, argv[i], REDISMODULE_READ | REDISMODULE_WRITE);
if (RedisModule_KeyType(key) == REDISMODULE_KEYTYPE_EMPTY) continue;
if (RedisModule_KeyType(key) != REDISMODULE_KEYTYPE_SET) {
RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
return REDISMODULE_ERR;
}
RedisModuleCallReply *rep =
RedisModule_Call(ctx, "SISMEMBER", "ss", argv[i], argv[iele]);
RMUTIL_ASSERT_NOERROR(rep)
count += RedisModule_CallReplyInteger(rep);
}
RedisModule_ReplyWithLongLong(ctx, count);
return REDISMODULE_OK;
}
/* HELLO.HCOPY key srcfield dstfield
* This is just an example command that sets the hash field dstfield to the
* same value of srcfield. If srcfield does not exist no operation is
* performed.
*
* The command returns 1 if the copy is performed (srcfield exists) otherwise
* 0 is returned. */
int HelloHCopy_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
if (argc != 4) return RedisModule_WrongArity(ctx);
RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
REDISMODULE_READ|REDISMODULE_WRITE);
int type = RedisModule_KeyType(key);
if (type != REDISMODULE_KEYTYPE_HASH &&
type != REDISMODULE_KEYTYPE_EMPTY)
{
return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
}
/* Get the old field value. */
RedisModuleString *oldval;
RedisModule_HashGet(key,REDISMODULE_HASH_NONE,argv[2],&oldval,NULL);
if (oldval) {
RedisModule_HashSet(key,REDISMODULE_HASH_NONE,argv[3],oldval,NULL);
}
RedisModule_ReplyWithLongLong(ctx,oldval != NULL);
return REDISMODULE_OK;
}
/* HELLO.SIMPLE is among the simplest commands you can implement.
* It just returns the currently selected DB id, a functionality which is
* missing in Redis. The command uses two important API calls: one to
* fetch the currently selected DB, the other in order to send the client
* an integer reply as response. */
int HelloSimple_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
RedisModule_ReplyWithLongLong(ctx,RedisModule_GetSelectedDb(ctx));
return REDISMODULE_OK;
}
