228 lines
9.0 KiB
C
228 lines
9.0 KiB
C
#include "redismodule.h"
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#define UNUSED(V) ((void) V)
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/* This function implements all commands in this module. All we care about is
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* the COMMAND metadata anyway. */
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int kspec_impl(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
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UNUSED(argv);
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UNUSED(argc);
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RedisModule_ReplyWithSimpleString(ctx, "OK");
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return REDISMODULE_OK;
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}
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int createKspecNone(RedisModuleCtx *ctx) {
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/* A command without keyspecs; only the legacy (first,last,step) triple (MSET like spec). */
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if (RedisModule_CreateCommand(ctx,"kspec.none",kspec_impl,"",1,-1,2) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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return REDISMODULE_OK;
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}
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int createKspecNoneWithGetkeys(RedisModuleCtx *ctx) {
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/* A command without keyspecs; only the legacy (first,last,step) triple (MSET like spec), but also has a getkeys callback */
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if (RedisModule_CreateCommand(ctx,"kspec.nonewithgetkeys",kspec_impl,"getkeys-api",1,-1,2) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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return REDISMODULE_OK;
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}
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int createKspecTwoRanges(RedisModuleCtx *ctx) {
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/* Test that two position/range-based key specs are combined to produce the
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* legacy (first,last,step) values representing both keys. */
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if (RedisModule_CreateCommand(ctx,"kspec.tworanges",kspec_impl,"",0,0,0) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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RedisModuleCommand *command = RedisModule_GetCommand(ctx,"kspec.tworanges");
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RedisModuleCommandInfo info = {
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.version = REDISMODULE_COMMAND_INFO_VERSION,
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.arity = -2,
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.key_specs = (RedisModuleCommandKeySpec[]){
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{
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.flags = REDISMODULE_CMD_KEY_RO | REDISMODULE_CMD_KEY_ACCESS,
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.begin_search_type = REDISMODULE_KSPEC_BS_INDEX,
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.bs.index.pos = 1,
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.find_keys_type = REDISMODULE_KSPEC_FK_RANGE,
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.fk.range = {0,1,0}
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},
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{
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.flags = REDISMODULE_CMD_KEY_RW | REDISMODULE_CMD_KEY_UPDATE,
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.begin_search_type = REDISMODULE_KSPEC_BS_INDEX,
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.bs.index.pos = 2,
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/* Omitted find_keys_type is shorthand for RANGE {0,1,0} */
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},
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{0}
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}
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};
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if (RedisModule_SetCommandInfo(command, &info) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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return REDISMODULE_OK;
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}
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int createKspecTwoRangesWithGap(RedisModuleCtx *ctx) {
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/* Test that two position/range-based key specs are combined to produce the
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* legacy (first,last,step) values representing just one key. */
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if (RedisModule_CreateCommand(ctx,"kspec.tworangeswithgap",kspec_impl,"",0,0,0) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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RedisModuleCommand *command = RedisModule_GetCommand(ctx,"kspec.tworangeswithgap");
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RedisModuleCommandInfo info = {
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.version = REDISMODULE_COMMAND_INFO_VERSION,
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.arity = -2,
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.key_specs = (RedisModuleCommandKeySpec[]){
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{
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.flags = REDISMODULE_CMD_KEY_RO | REDISMODULE_CMD_KEY_ACCESS,
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.begin_search_type = REDISMODULE_KSPEC_BS_INDEX,
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.bs.index.pos = 1,
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.find_keys_type = REDISMODULE_KSPEC_FK_RANGE,
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.fk.range = {0,1,0}
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},
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{
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.flags = REDISMODULE_CMD_KEY_RW | REDISMODULE_CMD_KEY_UPDATE,
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.begin_search_type = REDISMODULE_KSPEC_BS_INDEX,
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.bs.index.pos = 3,
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/* Omitted find_keys_type is shorthand for RANGE {0,1,0} */
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},
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{0}
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}
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};
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if (RedisModule_SetCommandInfo(command, &info) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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return REDISMODULE_OK;
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}
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int createKspecKeyword(RedisModuleCtx *ctx) {
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/* Only keyword-based specs. The legacy triple is wiped and set to (0,0,0). */
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if (RedisModule_CreateCommand(ctx,"kspec.keyword",kspec_impl,"",3,-1,1) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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RedisModuleCommand *command = RedisModule_GetCommand(ctx,"kspec.keyword");
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RedisModuleCommandInfo info = {
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.version = REDISMODULE_COMMAND_INFO_VERSION,
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.key_specs = (RedisModuleCommandKeySpec[]){
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{
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.flags = REDISMODULE_CMD_KEY_RO | REDISMODULE_CMD_KEY_ACCESS,
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.begin_search_type = REDISMODULE_KSPEC_BS_KEYWORD,
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.bs.keyword.keyword = "KEYS",
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.bs.keyword.startfrom = 1,
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.find_keys_type = REDISMODULE_KSPEC_FK_RANGE,
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.fk.range = {-1,1,0}
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},
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{0}
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}
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};
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if (RedisModule_SetCommandInfo(command, &info) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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return REDISMODULE_OK;
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}
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int createKspecComplex1(RedisModuleCtx *ctx) {
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/* First is a range a single key. The rest are keyword-based specs. */
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if (RedisModule_CreateCommand(ctx,"kspec.complex1",kspec_impl,"",1,1,1) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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RedisModuleCommand *command = RedisModule_GetCommand(ctx,"kspec.complex1");
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RedisModuleCommandInfo info = {
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.version = REDISMODULE_COMMAND_INFO_VERSION,
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.key_specs = (RedisModuleCommandKeySpec[]){
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{
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.flags = REDISMODULE_CMD_KEY_RO,
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.begin_search_type = REDISMODULE_KSPEC_BS_INDEX,
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.bs.index.pos = 1,
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},
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{
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.flags = REDISMODULE_CMD_KEY_RW | REDISMODULE_CMD_KEY_UPDATE,
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.begin_search_type = REDISMODULE_KSPEC_BS_KEYWORD,
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.bs.keyword.keyword = "STORE",
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.bs.keyword.startfrom = 2,
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},
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{
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.flags = REDISMODULE_CMD_KEY_RO | REDISMODULE_CMD_KEY_ACCESS,
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.begin_search_type = REDISMODULE_KSPEC_BS_KEYWORD,
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.bs.keyword.keyword = "KEYS",
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.bs.keyword.startfrom = 2,
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.find_keys_type = REDISMODULE_KSPEC_FK_KEYNUM,
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.fk.keynum = {0,1,1}
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},
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{0}
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}
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};
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if (RedisModule_SetCommandInfo(command, &info) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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return REDISMODULE_OK;
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}
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int createKspecComplex2(RedisModuleCtx *ctx) {
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/* First is not legacy, more than STATIC_KEYS_SPECS_NUM specs */
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if (RedisModule_CreateCommand(ctx,"kspec.complex2",kspec_impl,"",0,0,0) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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RedisModuleCommand *command = RedisModule_GetCommand(ctx,"kspec.complex2");
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RedisModuleCommandInfo info = {
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.version = REDISMODULE_COMMAND_INFO_VERSION,
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.key_specs = (RedisModuleCommandKeySpec[]){
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{
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.flags = REDISMODULE_CMD_KEY_RW | REDISMODULE_CMD_KEY_UPDATE,
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.begin_search_type = REDISMODULE_KSPEC_BS_KEYWORD,
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.bs.keyword.keyword = "STORE",
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.bs.keyword.startfrom = 5,
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.find_keys_type = REDISMODULE_KSPEC_FK_RANGE,
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.fk.range = {0,1,0}
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},
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{
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.flags = REDISMODULE_CMD_KEY_RO | REDISMODULE_CMD_KEY_ACCESS,
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.begin_search_type = REDISMODULE_KSPEC_BS_INDEX,
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.bs.index.pos = 1,
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.find_keys_type = REDISMODULE_KSPEC_FK_RANGE,
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.fk.range = {0,1,0}
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},
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{
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.flags = REDISMODULE_CMD_KEY_RO | REDISMODULE_CMD_KEY_ACCESS,
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.begin_search_type = REDISMODULE_KSPEC_BS_INDEX,
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.bs.index.pos = 2,
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.find_keys_type = REDISMODULE_KSPEC_FK_RANGE,
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.fk.range = {0,1,0}
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},
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{
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.flags = REDISMODULE_CMD_KEY_RW | REDISMODULE_CMD_KEY_UPDATE,
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.begin_search_type = REDISMODULE_KSPEC_BS_INDEX,
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.bs.index.pos = 3,
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.find_keys_type = REDISMODULE_KSPEC_FK_KEYNUM,
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.fk.keynum = {0,1,1}
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},
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{
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.flags = REDISMODULE_CMD_KEY_RW | REDISMODULE_CMD_KEY_UPDATE,
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.begin_search_type = REDISMODULE_KSPEC_BS_KEYWORD,
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.bs.keyword.keyword = "MOREKEYS",
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.bs.keyword.startfrom = 5,
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.find_keys_type = REDISMODULE_KSPEC_FK_RANGE,
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.fk.range = {-1,1,0}
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},
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{0}
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}
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};
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if (RedisModule_SetCommandInfo(command, &info) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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return REDISMODULE_OK;
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}
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int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
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REDISMODULE_NOT_USED(argv);
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REDISMODULE_NOT_USED(argc);
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if (RedisModule_Init(ctx, "keyspecs", 1, REDISMODULE_APIVER_1) == REDISMODULE_ERR)
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return REDISMODULE_ERR;
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if (createKspecNone(ctx) == REDISMODULE_ERR) return REDISMODULE_ERR;
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if (createKspecNoneWithGetkeys(ctx) == REDISMODULE_ERR) return REDISMODULE_ERR;
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if (createKspecTwoRanges(ctx) == REDISMODULE_ERR) return REDISMODULE_ERR;
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if (createKspecTwoRangesWithGap(ctx) == REDISMODULE_ERR) return REDISMODULE_ERR;
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if (createKspecKeyword(ctx) == REDISMODULE_ERR) return REDISMODULE_ERR;
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if (createKspecComplex1(ctx) == REDISMODULE_ERR) return REDISMODULE_ERR;
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if (createKspecComplex2(ctx) == REDISMODULE_ERR) return REDISMODULE_ERR;
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return REDISMODULE_OK;
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}
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