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Modules: add new flags to context, replica state + more.

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This commit is contained in:
antirez 2019-10-17 17:49:33 +02:00
parent efb6495a44
commit 8651e6a10d
2 changed files with 48 additions and 1 deletions
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32
src/module.c
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@ -1551,6 +1551,21 @@ int RM_GetSelectedDb(RedisModuleCtx *ctx) {
*
* * REDISMODULE_CTX_FLAGS_OOM_WARNING: Less than 25% of memory remains before
* reaching the maxmemory level.
*
* * REDISMODULE_CTX_FLAGS_REPLICA_IS_STALE: No active link with the master.
*
* * REDISMODULE_CTX_FLAGS_REPLICA_IS_CONNECTING: The replica is trying to
* connect with the master.
*
* * REDISMODULE_CTX_FLAGS_REPLICA_IS_TRANSFERRING: Master -> Replica RDB
* transfer is in progress.
*
* * REDISMODULE_CTX_FLAGS_REPLICA_IS_ONLINE: The replica has an active link
* with its master. This is the
* contrary of STALE state.
*
* * REDISMODULE_CTX_FLAGS_ACTIVE_CHILD: There is currently some background
* process active (RDB, AUX or module).
*/
int RM_GetContextFlags(RedisModuleCtx *ctx) {
@ -1593,6 +1608,20 @@ int RM_GetContextFlags(RedisModuleCtx *ctx) {
flags |= REDISMODULE_CTX_FLAGS_SLAVE;
if (server.repl_slave_ro)
flags |= REDISMODULE_CTX_FLAGS_READONLY;
/* Replica state flags. */
if (server.repl_state == REPL_STATE_CONNECT ||
server.repl_state == REPL_STATE_CONNECTING)
{
flags |= REDISMODULE_CTX_FLAGS_REPLICA_IS_CONNECTING;
} else if (server.repl_state == REPL_STATE_TRANSFER) {
flags |= REDISMODULE_CTX_FLAGS_REPLICA_IS_TRANSFERRING;
} else if (server.repl_state == REPL_STATE_CONNECTED) {
flags |= REDISMODULE_CTX_FLAGS_REPLICA_IS_ONLINE;
}
if (server.repl_state != REPL_STATE_CONNECTED)
flags |= REDISMODULE_CTX_FLAGS_REPLICA_IS_STALE;
}
/* OOM flag. */
@ -1601,6 +1630,9 @@ int RM_GetContextFlags(RedisModuleCtx *ctx) {
if (retval == C_ERR) flags |= REDISMODULE_CTX_FLAGS_OOM;
if (level > 0.75) flags |= REDISMODULE_CTX_FLAGS_OOM_WARNING;
/* Presence of children processes. */
if (hasActiveChildProcess()) flags |= REDISMODULE_CTX_FLAGS_ACTIVE_CHILD;
return flags;
}

17
src/redismodule.h
View File

@ -89,7 +89,22 @@
#define REDISMODULE_CTX_FLAGS_REPLICATED (1<<12)
/* Redis is currently loading either from AOF or RDB. */
#define REDISMODULE_CTX_FLAGS_LOADING (1<<13)
/* The replica has no link with its master, note that
* there is the inverse flag as well:
*
* REDISMODULE_CTX_FLAGS_REPLICA_IS_ONLINE
*
* The two flags are exclusive, one or the other can be set. */
#define REDISMODULE_CTX_FLAGS_REPLICA_IS_STALE (1<<14)
/* The replica is trying to connect with the master.
* (REPL_STATE_CONNECT and REPL_STATE_CONNECTING states) */
#define REDISMODULE_CTX_FLAGS_REPLICA_IS_CONNECTING (1<<15)
/* THe replica is receiving an RDB file from its master. */
#define REDISMODULE_CTX_FLAGS_REPLICA_IS_TRANSFERRING (1<<16)
/* The replica is online, receiving updates from its master. */
#define REDISMODULE_CTX_FLAGS_REPLICA_IS_ONLINE (1<<17)
/* There is currently some background process active. */
#define REDISMODULE_CTX_FLAGS_ACTIVE_CHILD (1<<18)
#define REDISMODULE_NOTIFY_GENERIC (1<<2) /* g */
#define REDISMODULE_NOTIFY_STRING (1<<3) /* $ */