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Redis Functions - Added redis function unit and Lua engine

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Redis function unit is located inside functions.c
and contains Redis Function implementation:
1. FUNCTION commands:
  * FUNCTION CREATE
  * FCALL
  * FCALL_RO
  * FUNCTION DELETE
  * FUNCTION KILL
  * FUNCTION INFO
2. Register engine

In addition, this commit introduce the first engine
that uses the Redis Function capabilities, the
Lua engine.
This commit is contained in:
meir@redislabs.com
2021-12-02 19:35:52 +02:00
committed by meir
parent f21dc38a6e
commit cbd463175f
21 changed files with 1647 additions and 143 deletions
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src/script.c
+35 -3
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@@ -60,6 +60,11 @@ client* scriptGetClient() {
return curr_run_ctx->c;
}
client* scriptGetCaller() {
serverAssert(scriptIsRunning());
return curr_run_ctx->original_client;
}
/* interrupt function for scripts, should be call
* from time to time to reply some special command (like ping)
* and also check if the run should be terminated. */
@@ -78,8 +83,8 @@ int scriptInterrupt(scriptRunCtx *run_ctx) {
serverLog(LL_WARNING,
"Slow script detected: still in execution after %lld milliseconds. "
"You can try killing the script using the SCRIPT KILL command.",
elapsed);
"You can try killing the script using the %s command.",
elapsed, (run_ctx->flags & SCRIPT_EVAL_MODE) ? "SCRIPT KILL" : "FUNCTION KILL");
enterScriptTimedoutMode(run_ctx);
/* Once the script timeouts we reenter the event loop to permit others
@@ -159,8 +164,18 @@ int scriptIsRunning() {
return curr_run_ctx != NULL;
}
const char* scriptCurrFunction() {
serverAssert(scriptIsRunning());
return curr_run_ctx->funcname;
}
int scriptIsEval() {
serverAssert(scriptIsRunning());
return curr_run_ctx->flags & SCRIPT_EVAL_MODE;
}
/* Kill the current running script */
void scriptKill(client *c) {
void scriptKill(client *c, int is_eval) {
if (!curr_run_ctx) {
addReplyError(c, "-NOTBUSY No scripts in execution right now.");
return;
@@ -177,6 +192,16 @@ void scriptKill(client *c) {
"using the SHUTDOWN NOSAVE command.");
return;
}
if (is_eval && !(curr_run_ctx->flags & SCRIPT_EVAL_MODE)) {
/* Kill a function with 'SCRIPT KILL' is not allow */
addReplyErrorObject(c, shared.slowscripterr);
return;
}
if (!is_eval && (curr_run_ctx->flags & SCRIPT_EVAL_MODE)) {
/* Kill an eval with 'FUNCTION KILL' is not allow */
addReplyErrorObject(c, shared.slowevalerr);
return;
}
curr_run_ctx->flags |= SCRIPT_KILLED;
addReply(c, shared.ok);
}
@@ -430,3 +455,10 @@ mstime_t scriptTimeSnapshot() {
serverAssert(!curr_run_ctx);
return curr_run_ctx->snapshot_time;
}
long long scriptRunDuration() {
serverAssert(scriptIsRunning());
return elapsedMs(curr_run_ctx->start_time);
}