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adaptai / platform /dbops /binaries /redis /src /tests /modules /moduleconfigs.c
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#include "redismodule.h"
#include <strings.h>
int mutable_bool_val;
int immutable_bool_val;
long long longval;
long long memval;
RedisModuleString *strval = NULL;
int enumval;
int flagsval;
/* Series of get and set callbacks for each type of config, these rely on the privdata ptr
* to point to the config, and they register the configs as such. Note that one could also just
* use names if they wanted, and store anything in privdata. */
int getBoolConfigCommand(const char *name, void *privdata) {
REDISMODULE_NOT_USED(name);
return (*(int *)privdata);
}
int setBoolConfigCommand(const char *name, int new, void *privdata, RedisModuleString **err) {
REDISMODULE_NOT_USED(name);
REDISMODULE_NOT_USED(err);
*(int *)privdata = new;
return REDISMODULE_OK;
}
long long getNumericConfigCommand(const char *name, void *privdata) {
REDISMODULE_NOT_USED(name);
return (*(long long *) privdata);
}
int setNumericConfigCommand(const char *name, long long new, void *privdata, RedisModuleString **err) {
REDISMODULE_NOT_USED(name);
REDISMODULE_NOT_USED(err);
*(long long *)privdata = new;
return REDISMODULE_OK;
}
RedisModuleString *getStringConfigCommand(const char *name, void *privdata) {
REDISMODULE_NOT_USED(name);
REDISMODULE_NOT_USED(privdata);
return strval;
}
int setStringConfigCommand(const char *name, RedisModuleString *new, void *privdata, RedisModuleString **err) {
REDISMODULE_NOT_USED(name);
REDISMODULE_NOT_USED(err);
REDISMODULE_NOT_USED(privdata);
size_t len;
if (!strcasecmp(RedisModule_StringPtrLen(new, &len), "rejectisfreed")) {
*err = RedisModule_CreateString(NULL, "Cannot set string to 'rejectisfreed'", 36);
return REDISMODULE_ERR;
}
if (strval) RedisModule_FreeString(NULL, strval);
RedisModule_RetainString(NULL, new);
strval = new;
return REDISMODULE_OK;
}
int getEnumConfigCommand(const char *name, void *privdata) {
REDISMODULE_NOT_USED(name);
REDISMODULE_NOT_USED(privdata);
return enumval;
}
int setEnumConfigCommand(const char *name, int val, void *privdata, RedisModuleString **err) {
REDISMODULE_NOT_USED(name);
REDISMODULE_NOT_USED(err);
REDISMODULE_NOT_USED(privdata);
enumval = val;
return REDISMODULE_OK;
}
int getFlagsConfigCommand(const char *name, void *privdata) {
REDISMODULE_NOT_USED(name);
REDISMODULE_NOT_USED(privdata);
return flagsval;
}
int setFlagsConfigCommand(const char *name, int val, void *privdata, RedisModuleString **err) {
REDISMODULE_NOT_USED(name);
REDISMODULE_NOT_USED(err);
REDISMODULE_NOT_USED(privdata);
flagsval = val;
return REDISMODULE_OK;
}
int boolApplyFunc(RedisModuleCtx *ctx, void *privdata, RedisModuleString **err) {
REDISMODULE_NOT_USED(ctx);
REDISMODULE_NOT_USED(privdata);
if (mutable_bool_val && immutable_bool_val) {
*err = RedisModule_CreateString(NULL, "Bool configs cannot both be yes.", 32);
return REDISMODULE_ERR;
}
return REDISMODULE_OK;
}
int longlongApplyFunc(RedisModuleCtx *ctx, void *privdata, RedisModuleString **err) {
REDISMODULE_NOT_USED(ctx);
REDISMODULE_NOT_USED(privdata);
if (longval == memval) {
*err = RedisModule_CreateString(NULL, "These configs cannot equal each other.", 38);
return REDISMODULE_ERR;
}
return REDISMODULE_OK;
}
int registerBlockCheck(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
REDISMODULE_NOT_USED(argv);
REDISMODULE_NOT_USED(argc);
int response_ok = 0;
int result = RedisModule_RegisterBoolConfig(ctx, "mutable_bool", 1, REDISMODULE_CONFIG_DEFAULT, getBoolConfigCommand, setBoolConfigCommand, boolApplyFunc, &mutable_bool_val);
response_ok |= (result == REDISMODULE_OK);
result = RedisModule_RegisterStringConfig(ctx, "string", "secret password", REDISMODULE_CONFIG_DEFAULT, getStringConfigCommand, setStringConfigCommand, NULL, NULL);
response_ok |= (result == REDISMODULE_OK);
const char *enum_vals[] = {"none", "five", "one", "two", "four"};
const int int_vals[] = {0, 5, 1, 2, 4};
result = RedisModule_RegisterEnumConfig(ctx, "enum", 1, REDISMODULE_CONFIG_DEFAULT, enum_vals, int_vals, 5, getEnumConfigCommand, setEnumConfigCommand, NULL, NULL);
response_ok |= (result == REDISMODULE_OK);
result = RedisModule_RegisterNumericConfig(ctx, "numeric", -1, REDISMODULE_CONFIG_DEFAULT, -5, 2000, getNumericConfigCommand, setNumericConfigCommand, longlongApplyFunc, &longval);
response_ok |= (result == REDISMODULE_OK);
result = RedisModule_LoadConfigs(ctx);
response_ok |= (result == REDISMODULE_OK);
/* This validates that it's not possible to register/load configs outside OnLoad,
* thus returns an error if they succeed. */
if (response_ok) {
RedisModule_ReplyWithError(ctx, "UNEXPECTEDOK");
} else {
RedisModule_ReplyWithSimpleString(ctx, "OK");
}
return REDISMODULE_OK;
}
int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
REDISMODULE_NOT_USED(argv);
REDISMODULE_NOT_USED(argc);
if (RedisModule_Init(ctx, "moduleconfigs", 1, REDISMODULE_APIVER_1) == REDISMODULE_ERR) return REDISMODULE_ERR;
if (RedisModule_RegisterBoolConfig(ctx, "mutable_bool", 1, REDISMODULE_CONFIG_DEFAULT, getBoolConfigCommand, setBoolConfigCommand, boolApplyFunc, &mutable_bool_val) == REDISMODULE_ERR) {
return REDISMODULE_ERR;
}
/* Immutable config here. */
if (RedisModule_RegisterBoolConfig(ctx, "immutable_bool", 0, REDISMODULE_CONFIG_IMMUTABLE, getBoolConfigCommand, setBoolConfigCommand, boolApplyFunc, &immutable_bool_val) == REDISMODULE_ERR) {
return REDISMODULE_ERR;
}
if (RedisModule_RegisterStringConfig(ctx, "string", "secret password", REDISMODULE_CONFIG_DEFAULT, getStringConfigCommand, setStringConfigCommand, NULL, NULL) == REDISMODULE_ERR) {
return REDISMODULE_ERR;
}
/* On the stack to make sure we're copying them. */
const char *enum_vals[] = {"none", "five", "one", "two", "four"};
const int int_vals[] = {0, 5, 1, 2, 4};
if (RedisModule_RegisterEnumConfig(ctx, "enum", 1, REDISMODULE_CONFIG_DEFAULT, enum_vals, int_vals, 5, getEnumConfigCommand, setEnumConfigCommand, NULL, NULL) == REDISMODULE_ERR) {
return REDISMODULE_ERR;
}
if (RedisModule_RegisterEnumConfig(ctx, "flags", 3, REDISMODULE_CONFIG_DEFAULT | REDISMODULE_CONFIG_BITFLAGS, enum_vals, int_vals, 5, getFlagsConfigCommand, setFlagsConfigCommand, NULL, NULL) == REDISMODULE_ERR) {
return REDISMODULE_ERR;
}
/* Memory config here. */
if (RedisModule_RegisterNumericConfig(ctx, "memory_numeric", 1024, REDISMODULE_CONFIG_DEFAULT | REDISMODULE_CONFIG_MEMORY, 0, 3000000, getNumericConfigCommand, setNumericConfigCommand, longlongApplyFunc, &memval) == REDISMODULE_ERR) {
return REDISMODULE_ERR;
}
if (RedisModule_RegisterNumericConfig(ctx, "numeric", -1, REDISMODULE_CONFIG_DEFAULT, -5, 2000, getNumericConfigCommand, setNumericConfigCommand, longlongApplyFunc, &longval) == REDISMODULE_ERR) {
return REDISMODULE_ERR;
}
size_t len;
if (argc && !strcasecmp(RedisModule_StringPtrLen(argv[0], &len), "noload")) {
return REDISMODULE_OK;
} else if (RedisModule_LoadConfigs(ctx) == REDISMODULE_ERR) {
if (strval) {
RedisModule_FreeString(ctx, strval);
strval = NULL;
}
return REDISMODULE_ERR;
}
/* Creates a command which registers configs outside OnLoad() function. */
if (RedisModule_CreateCommand(ctx,"block.register.configs.outside.onload", registerBlockCheck, "write", 0, 0, 0) == REDISMODULE_ERR)
return REDISMODULE_ERR;
return REDISMODULE_OK;
}
int RedisModule_OnUnload(RedisModuleCtx *ctx) {
REDISMODULE_NOT_USED(ctx);
if (strval) {
RedisModule_FreeString(ctx, strval);
strval = NULL;
}
return REDISMODULE_OK;
}