Add module api for looking into INFO fields

- Add RM_GetServerInfo and friends
- Add auto memory for new opaque struct
- Add tests for new APIs

other minor fixes:
- add const in various char pointers
- requested_section in modulesCollectInfo was actually not sds but char*
- extract new string2d out of getDoubleFromObject for code reuse

Add module API for

1 files changed, 11 insertions, 0 deletions

diff --git a/src/redismodule.h b/src/redismodule.h
index ea0d6a139..d923a1b8a 100644
--- a/src/redismodule.h
+++ b/src/redismodule.h
@@ -318,6 +318,7 @@ typedef struct RedisModuleDictIter RedisModuleDictIter;
 typedef struct RedisModuleCommandFilterCtx RedisModuleCommandFilterCtx;
 typedef struct RedisModuleCommandFilter RedisModuleCommandFilter;
 typedef struct RedisModuleInfoCtx RedisModuleInfoCtx;
+typedef struct RedisModuleServerInfoData RedisModuleServerInfoData;
 
 typedef int (*RedisModuleCmdFunc)(RedisModuleCtx *ctx, RedisModuleString **argv, int argc);
 typedef void (*RedisModuleDisconnectFunc)(RedisModuleCtx *ctx, RedisModuleBlockedClient *bc);
@@ -502,6 +503,11 @@ int REDISMODULE_API_FUNC(RedisModule_InfoAddFieldCString)(RedisModuleInfoCtx *ct
 int REDISMODULE_API_FUNC(RedisModule_InfoAddFieldDouble)(RedisModuleInfoCtx *ctx, char *field, double value);
 int REDISMODULE_API_FUNC(RedisModule_InfoAddFieldLongLong)(RedisModuleInfoCtx *ctx, char *field, long long value);
 int REDISMODULE_API_FUNC(RedisModule_InfoAddFieldULongLong)(RedisModuleInfoCtx *ctx, char *field, unsigned long long value);
+RedisModuleServerInfoData *REDISMODULE_API_FUNC(RedisModule_GetServerInfo)(RedisModuleCtx *ctx, const char *section);
+void REDISMODULE_API_FUNC(RedisModule_FreeServerInfo)(RedisModuleCtx *ctx, RedisModuleServerInfoData *data);
+RedisModuleString *REDISMODULE_API_FUNC(RedisModule_ServerInfoGetField)(RedisModuleCtx *ctx, RedisModuleServerInfoData *data, const char* field);
+long long REDISMODULE_API_FUNC(RedisModule_ServerInfoGetFieldNumerical)(RedisModuleCtx *ctx, RedisModuleServerInfoData *data, const char* field, int *out_err);
+double REDISMODULE_API_FUNC(RedisModule_ServerInfoGetFieldDouble)(RedisModuleCtx *ctx, RedisModuleServerInfoData *data, const char* field, int *out_err);
 int REDISMODULE_API_FUNC(RedisModule_SubscribeToServerEvent)(RedisModuleCtx *ctx, RedisModuleEvent event, RedisModuleEventCallback callback);
 RedisModuleBlockedClient *REDISMODULE_API_FUNC(RedisModule_BlockClientOnKeys)(RedisModuleCtx *ctx, RedisModuleCmdFunc reply_callback, RedisModuleCmdFunc timeout_callback, void (*free_privdata)(RedisModuleCtx*,void*), long long timeout_ms, RedisModuleString **keys, int numkeys, void *privdata);
 void REDISMODULE_API_FUNC(RedisModule_SignalKeyAsReady)(RedisModuleCtx *ctx, RedisModuleString *key);
@@ -704,6 +710,11 @@ static int RedisModule_Init(RedisModuleCtx *ctx, const char *name, int ver, int
     REDISMODULE_GET_API(InfoAddFieldDouble);
     REDISMODULE_GET_API(InfoAddFieldLongLong);
     REDISMODULE_GET_API(InfoAddFieldULongLong);
+    REDISMODULE_GET_API(GetServerInfo);
+    REDISMODULE_GET_API(FreeServerInfo);
+    REDISMODULE_GET_API(ServerInfoGetField);
+    REDISMODULE_GET_API(ServerInfoGetFieldNumerical);
+    REDISMODULE_GET_API(ServerInfoGetFieldDouble);
     REDISMODULE_GET_API(GetClientInfoById);
     REDISMODULE_GET_API(SubscribeToServerEvent);
     REDISMODULE_GET_API(BlockClientOnKeys);