Ejemplo n.º 1
0
/* HELLO.LEFTPAD str len ch
 * This is an implementation of the infamous LEFTPAD function, that
 * was at the center of an issue with the npm modules system in March 2016.
 *
 * LEFTPAD is a good example of using a Redis Modules API called
 * "pool allocator", that was a famous way to allocate memory in yet another
 * open source project, the Apache web server.
 *
 * The concept is very simple: there is memory that is useful to allocate
 * only in the context of serving a request, and must be freed anyway when
 * the callback implementing the command returns. So in that case the module
 * does not need to retain a reference to these allocations, it is just
 * required to free the memory before returning. When this is the case the
 * module can call RedisModule_PoolAlloc() instead, that works like malloc()
 * but will automatically free the memory when the module callback returns.
 *
 * Note that PoolAlloc() does not necessarily require AutoMemory to be
 * active. */
int HelloLeftPad_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
    long long padlen;

    if (argc != 4) return RedisModule_WrongArity(ctx);

    if ((RedisModule_StringToLongLong(argv[2],&padlen) != REDISMODULE_OK) ||
        (padlen< 0)) {
        return RedisModule_ReplyWithError(ctx,"ERR invalid padding length");
    }
    size_t strlen, chlen;
    const char *str = RedisModule_StringPtrLen(argv[1], &strlen);
    const char *ch = RedisModule_StringPtrLen(argv[3], &chlen);

    /* If the string is already larger than the target len, just return
     * the string itself. */
    if (strlen >= padlen)
        return RedisModule_ReplyWithString(ctx,argv[1]);

    /* Padding must be a single character in this simple implementation. */
    if (chlen != 1)
        return RedisModule_ReplyWithError(ctx,
            "ERR padding must be a single char");

    /* Here we use our pool allocator, for our throw-away allocation. */
    padlen -= strlen;
    char *buf = RedisModule_PoolAlloc(ctx,padlen+strlen);
    for (size_t j = 0; j < padlen; j++) buf[j] = *ch;
    memcpy(buf+padlen,str,strlen);

    RedisModule_ReplyWithStringBuffer(ctx,buf,padlen+strlen);
    return REDISMODULE_OK;
}
Ejemplo n.º 2
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;
}
Ejemplo n.º 3
0
static int UpdateTransformedImage(RedisModuleCtx *ctx, RedisModuleKey *img_key,
                                  const char *transformed_img, size_t img_len) {
    int res = REDISMODULE_ERR;

    // Resize the key to contain the transformed image buffer
    if (RedisModule_StringTruncate(img_key, img_len) == REDISMODULE_ERR) {
        RedisModule_ReplyWithError(ctx, "Error resizing string key");
        return res;
    }

    // Get write access to the resized key
    char *buf = RedisModule_StringDMA(img_key, &img_len, REDISMODULE_WRITE);
    if (!buf) {
        RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
        return res;
    }

    // Write transformed blob to output
    memcpy(buf, transformed_img, img_len);

    // Setup success reply
    RedisModule_ReplyWithSimpleString(ctx, "OK");
    res = REDISMODULE_OK;

    return res;
}
Ejemplo n.º 4
0
/* 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;
}
Ejemplo n.º 5
0
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);
    }
}
Ejemplo n.º 6
0
/* HELLO.LEXRANGE key min_lex max_lex min_age max_age
 * This command expects a sorted set stored at key in the following form:
 * - All the elements have score 0.
 * - Elements are pairs of "<name>:<age>", for example "Anna:52".
 * The command will return all the sorted set items that are lexicographically
 * between the specified range (using the same format as ZRANGEBYLEX)
 * and having an age between min_age and max_age. */
int HelloLexRange_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    RedisModule_AutoMemory(ctx); /* Use automatic memory management. */

    if (argc != 6) return RedisModule_WrongArity(ctx);

    RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
        REDISMODULE_READ|REDISMODULE_WRITE);
    if (RedisModule_KeyType(key) != REDISMODULE_KEYTYPE_ZSET) {
        return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
    }

    if (RedisModule_ZsetFirstInLexRange(key,argv[2],argv[3]) != REDISMODULE_OK) {
        return RedisModule_ReplyWithError(ctx,"invalid range");
    }

    int arraylen = 0;
    RedisModule_ReplyWithArray(ctx,REDISMODULE_POSTPONED_ARRAY_LEN);
    while(!RedisModule_ZsetRangeEndReached(key)) {
        double score;
        RedisModuleString *ele = RedisModule_ZsetRangeCurrentElement(key,&score);
        RedisModule_ReplyWithString(ctx,ele);
        RedisModule_FreeString(ctx,ele);
        RedisModule_ZsetRangeNext(key);
        arraylen++;
    }
    RedisModule_ZsetRangeStop(key);
    RedisModule_ReplySetArrayLength(ctx,arraylen);
    RedisModule_CloseKey(key);
    return REDISMODULE_OK;
}
Ejemplo n.º 7
0
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;
}
Ejemplo n.º 8
0
/*
## 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;
}
Ejemplo n.º 9
0
int GMSwirlCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    if (argc != 3) {
        return RedisModule_WrongArity(ctx);
    }

    // init auto memory for created strings
    RedisModule_AutoMemory(ctx);

    // open the key
    RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ|REDISMODULE_WRITE);
    // If key doesn't exist then return immediately
    if (RedisModule_KeyType(key) == REDISMODULE_KEYTYPE_EMPTY) {
        RedisModule_ReplyWithError(ctx, "empty key");
        return REDISMODULE_OK;
    }
    // Validate key is a string
    if (RedisModule_KeyType(key) != REDISMODULE_KEYTYPE_STRING) {
        RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
        return REDISMODULE_ERR;
    }

    // Validate input is valid float
    double degrees;
    if (RedisModule_StringToDouble(argv[2], &degrees) == REDISMODULE_ERR) {
        RedisModule_ReplyWithError(ctx, "Invalid arguments");
        return REDISMODULE_ERR;
    }

    // Get access to the image
    size_t key_len;
    char *buf = RedisModule_StringDMA(key, &key_len, REDISMODULE_READ);
    if (!buf) {
        RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
        return REDISMODULE_ERR;
    }

    struct GoImgSwirl_return r = GoImgSwirl(buf, key_len, degrees);
    if (r.r3 != 0) {
        RedisModule_ReplyWithError(ctx, r.r2);
        free(r.r0);
        free(r.r2);
        return REDISMODULE_ERR;
    }

    int result = UpdateTransformedImage(ctx, key, r.r0, r.r1);
    free(r.r0);
    free(r.r2);

    return result;
}
Ejemplo n.º 10
0
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;
}
Ejemplo n.º 11
0
int UniqueGetAllCommand(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_ReplyWithArray(ctx, len*2);
    size_t i;
    listIter *it = listGetIterator(unique->l, AL_START_HEAD);
    listNode *node;
    for (node = listNext(it), i=0; node && i<len; node = listNext(it),i++) {
        dictEntry *en = node->value;
        RedisModule_ReplyWithStringBuffer(ctx, en->key, sdslen(en->key));
        RedisModule_ReplyWithStringBuffer(ctx, en->v.val, sdslen(en->v.val));
    }
    return REDISMODULE_OK;
}
Ejemplo n.º 12
0
/* 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;
}
Ejemplo n.º 13
0
int UniquePopCommandHelper(RedisModuleCtx *ctx, RedisModuleString **argv, int argc, 
        PopReplyCB replycb) {
    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);
    
    sds skey, sval;
    int r = uniquePop(unique, &skey, &sval);
    if (r == 0) {
        replycb(ctx, skey, sval);
        sdsfree(skey);
        sdsfree(sval);
    } else {
        RedisModule_ReplyWithNull(ctx);
    }
    return REDISMODULE_OK;
}
Ejemplo n.º 14
0
/* This is an example of strings DMA access. Given a key containing a string
 * it toggles the case of each character from lower to upper case or the
 * other way around.
 *
 * No automatic memory management is used in this example (for the sake
 * of variety).
 *
 * HELLO.TOGGLE.CASE key */
int HelloToggleCase_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    if (argc != 2) return RedisModule_WrongArity(ctx);

    RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
        REDISMODULE_READ|REDISMODULE_WRITE);

    int keytype = RedisModule_KeyType(key);
    if (keytype != REDISMODULE_KEYTYPE_STRING &&
        keytype != REDISMODULE_KEYTYPE_EMPTY)
    {
        RedisModule_CloseKey(key);
        return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
    }

    if (keytype == REDISMODULE_KEYTYPE_STRING) {
        size_t len, j;
        char *s = RedisModule_StringDMA(key,&len,REDISMODULE_WRITE);
        for (j = 0; j < len; j++) {
            if (isupper(s[j])) {
                s[j] = tolower(s[j]);
            } else {
                s[j] = toupper(s[j]);
            }
        }
    }

    RedisModule_CloseKey(key);
    RedisModule_ReplyWithSimpleString(ctx,"OK");
    RedisModule_ReplicateVerbatim(ctx);
    return REDISMODULE_OK;
}
Ejemplo n.º 15
0
/* HELLO.ZSUMRANGE key startscore endscore
 * Return the sum of all the scores elements between startscore and endscore.
 *
 * The computation is performed two times, one time from start to end and
 * another time backward. The two scores, returned as a two element array,
 * should match.*/
int HelloZsumRange_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    double score_start, score_end;
    if (argc != 4) return RedisModule_WrongArity(ctx);

    if (RedisModule_StringToDouble(argv[2],&score_start) != REDISMODULE_OK ||
        RedisModule_StringToDouble(argv[3],&score_end) != REDISMODULE_OK)
    {
        return RedisModule_ReplyWithError(ctx,"ERR invalid range");
    }

    RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
        REDISMODULE_READ|REDISMODULE_WRITE);
    if (RedisModule_KeyType(key) != REDISMODULE_KEYTYPE_ZSET) {
        return RedisModule_ReplyWithError(ctx,REDISMODULE_ERRORMSG_WRONGTYPE);
    }

    double scoresum_a = 0;
    double scoresum_b = 0;

    RedisModule_ZsetFirstInScoreRange(key,score_start,score_end,0,0);
    while(!RedisModule_ZsetRangeEndReached(key)) {
        double score;
        RedisModuleString *ele = RedisModule_ZsetRangeCurrentElement(key,&score);
        RedisModule_FreeString(ctx,ele);
        scoresum_a += score;
        RedisModule_ZsetRangeNext(key);
    }
    RedisModule_ZsetRangeStop(key);

    RedisModule_ZsetLastInScoreRange(key,score_start,score_end,0,0);
    while(!RedisModule_ZsetRangeEndReached(key)) {
        double score;
        RedisModuleString *ele = RedisModule_ZsetRangeCurrentElement(key,&score);
        RedisModule_FreeString(ctx,ele);
        scoresum_b += score;
        RedisModule_ZsetRangePrev(key);
    }

    RedisModule_ZsetRangeStop(key);

    RedisModule_CloseKey(key);

    RedisModule_ReplyWithArray(ctx,2);
    RedisModule_ReplyWithDouble(ctx,scoresum_a);
    RedisModule_ReplyWithDouble(ctx,scoresum_b);
    return REDISMODULE_OK;
}
Ejemplo n.º 16
0
int GMGetTypeCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    int res = REDISMODULE_ERR;

    if (argc != 2) {
        return RedisModule_WrongArity(ctx);
    }

    // init auto memory for created strings
    RedisModule_AutoMemory(ctx);

    // open the key
    RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ);

    // If key doesn't exist then return immediately
    if (RedisModule_KeyType(key) == REDISMODULE_KEYTYPE_EMPTY) {
        RedisModule_ReplyWithError(ctx, "empty key");
        return REDISMODULE_OK;
    }

    // Validate key is a string
    if (RedisModule_KeyType(key) != REDISMODULE_KEYTYPE_STRING) {
        RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
        return REDISMODULE_ERR;
    }

    // Get access to the image
    size_t key_len;
    char *buf = RedisModule_StringDMA(key, &key_len, REDISMODULE_READ);
    if (!buf) {
        RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
        return REDISMODULE_ERR;
    }

    struct GoGetImgType_return r = GoGetImgType(buf, key_len);

    if (r.r3 != 0) {
        RedisModule_ReplyWithError(ctx, r.r2);
        free(r.r0);
        free(r.r2);
        return REDISMODULE_ERR;
    }
    RedisModule_ReplyWithSimpleString(ctx, r.r0);
    free(r.r0);
    free(r.r2);

    return  REDISMODULE_OK;
}
Ejemplo n.º 17
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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;
}
Ejemplo n.º 18
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/* 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;
}
Ejemplo n.º 19
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static bool SpellCheck_CheckDictExistence(SpellCheckCtx *scCtx, const char *dict) {
#define BUFF_SIZE 1000
  RedisModuleKey *k = NULL;
  Trie *t = SpellCheck_OpenDict(scCtx->sctx->redisCtx, dict, REDISMODULE_READ, &k);
  if (t == NULL) {
    char buff[BUFF_SIZE];
    snprintf(buff, BUFF_SIZE, "Dict does not exist: %s", dict);
    RedisModule_ReplyWithError(scCtx->sctx->redisCtx, buff);
    return false;
  }
  RedisModule_CloseKey(k);
  return true;
}
Ejemplo n.º 20
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/*
## 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);
}
Ejemplo n.º 21
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/* 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;
}
Ejemplo n.º 22
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int TestModule(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
  RedisModule_AutoMemory(ctx);

  /* TODO: calling flushall but checking only for db 0. */
  RedisModuleCallReply *r = RedisModule_Call(ctx, "DBSIZE", "");
  if (RedisModule_CallReplyInteger(r) != 0) {
    RedisModule_ReplyWithError(ctx,
                               "ERR test must be run on an empty instance");
    return REDISMODULE_ERR;
  }

  RMUtil_Test(testMSIsMember);

  RedisModule_ReplyWithSimpleString(ctx, "PASS");
  return REDISMODULE_OK;
}
Ejemplo n.º 23
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static int router_simple_command(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    RedisModule_AutoMemory(ctx);

    if (argc < 2) {
        RedisModule_WrongArity(ctx);
        return REDISMODULE_OK;
    }

    RedisModuleCallReply *reply;
    size_t len;
    const char *realCmd = RedisModule_StringPtrLen(argv[1], &len);

    if (argc == 2) {
        reply = RedisModule_Call(ctx, realCmd, "");
    } else {
        char *fmt = (char *) malloc(argc-1);
        memset(fmt, 's', argc-2);
        fmt[argc-2] = '\0';

        ffi_cif cif;
        ffi_type **ffi_argv = (ffi_type **)malloc(sizeof(ffi_type *) * (argc + 1));
        void *result;
        int i;
        for (i = 0; i < argc+1; i++) {
            ffi_argv[i] = &ffi_type_pointer;
        }
        void **values = (void **) malloc(sizeof(void *) * (argc + 1));
        values[0] = &ctx;
        values[1] = &realCmd;
        values[2] = &fmt;
        for (i = 3; i < argc + 1; i++) {
            values[i] = &argv[i-1];
        }

        if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, (argc + 1), &ffi_type_pointer, ffi_argv) == FFI_OK) {
            ffi_call(&cif, FFI_FN(RedisModule_Call), &result, values);
        }
        reply = (RedisModuleCallReply *) result;
    }
    if (reply == NULL) {
        const char *err = "command error";
        RedisModule_ReplyWithError(ctx, err);
    } else {
        RedisModule_ReplyWithCallReply(ctx, reply);
    }
    return REDISMODULE_OK;
}
Ejemplo n.º 24
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int GMThumbnailCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    if (argc != 4) {
        return RedisModule_WrongArity(ctx);
    }

    // init auto memory for created strings
    RedisModule_AutoMemory(ctx);

    // open the key
    RedisModuleKey *key = RedisModule_OpenKey(ctx, argv[1], REDISMODULE_READ | REDISMODULE_WRITE);
    // If key doesn't exist then return immediately
    if (RedisModule_KeyType(key) == REDISMODULE_KEYTYPE_EMPTY) {
        RedisModule_ReplyWithError(ctx, "empty key");
        return REDISMODULE_OK;
    }
    // Validate key is a string
    if (RedisModule_KeyType(key) != REDISMODULE_KEYTYPE_STRING) {
        RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
        return REDISMODULE_ERR;
    }

    // Validate inputs are valid unsigned ints
    long long width;
    if (RedisModule_StringToLongLong(argv[2], &width) == REDISMODULE_ERR || width <= 0) {
        RedisModule_ReplyWithError(ctx, "Invalid arguments");
        return REDISMODULE_ERR;
    }
    long long height;
    if (RedisModule_StringToLongLong(argv[3], &height) == REDISMODULE_ERR || height <= 0) {
        RedisModule_ReplyWithError(ctx, "Invalid arguments");
        return REDISMODULE_ERR;
    }

    // Get access to the image
    size_t key_len;
    char *buf = RedisModule_StringDMA(key, &key_len, REDISMODULE_READ);
    if (!buf) {
        RedisModule_ReplyWithError(ctx, REDISMODULE_ERRORMSG_WRONGTYPE);
        return REDISMODULE_ERR;
    }

    struct GoImgThumbnail_return r = GoImgThumbnail(buf, key_len, width, height);
    if (r.r3 != 0) {
        RedisModule_ReplyWithError(ctx, r.r2);
        free(r.r0);
        free(r.r2);
        return REDISMODULE_ERR;
    }

    int result = UpdateTransformedImage(ctx, key, r.r0, r.r1);
    free(r.r0);
    free(r.r2);
    return result;
}
Ejemplo n.º 25
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/* 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;
}
Ejemplo n.º 26
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/* HELLO.MORE.EXPIRE key milliseconds.
 *
 * If they key has already an associated TTL, extends it by "milliseconds"
 * milliseconds. Otherwise no operation is performed. */
int HelloMoreExpire_RedisCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    RedisModule_AutoMemory(ctx); /* Use automatic memory management. */
    if (argc != 3) return RedisModule_WrongArity(ctx);

    mstime_t addms, expire;

    if (RedisModule_StringToLongLong(argv[2],&addms) != REDISMODULE_OK)
        return RedisModule_ReplyWithError(ctx,"ERR invalid expire time");

    RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
        REDISMODULE_READ|REDISMODULE_WRITE);
    expire = RedisModule_GetExpire(key);
    if (expire != REDISMODULE_NO_EXPIRE) {
        expire += addms;
        RedisModule_SetExpire(key,expire);
    }
    return RedisModule_ReplyWithSimpleString(ctx,"OK");
}
Ejemplo n.º 27
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/*
## 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));
}
Ejemplo n.º 28
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/*
* 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;
}
Ejemplo n.º 29
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static int cmd_password_hset(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
    RedisModuleCallReply *reply;
    size_t len;
    char crypt_buf[64];
    char *hash;

    if (argc != 4) {
        RedisModule_WrongArity(ctx);
        return REDISMODULE_OK;
    }

    hash = do_crypt(RedisModule_StringPtrLen(argv[3], &len), crypt_buf, sizeof(crypt_buf));
    if (!hash) {
        RedisModule_ReplyWithError(ctx, "ERR hash error");
        return REDISMODULE_ERR;
    }
    reply = RedisModule_Call(ctx, "HSET", "ssc!", argv[1], argv[2], hash);
    RedisModule_ReplyWithCallReply(ctx, reply);

    return REDISMODULE_OK;
}
Ejemplo n.º 30
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/* 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;
}