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MVEL engine warm up improvement

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This commit is contained in:
Igor Kulikov 2022-11-03 19:37:56 +02:00
parent a5691f9347
commit 7ca50ac3e5
1 changed files with 3 additions and 2 deletions
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5
common/script/script-api/src/main/java/org/thingsboard/script/api/mvel/DefaultMvelInvokeService.java
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@ -24,7 +24,6 @@ import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import org.mvel2.ExecutionContext;
import org.mvel2.MVEL;
import org.mvel2.ParserContext;
import org.mvel2.SandboxedParserConfiguration;
import org.mvel2.SandboxedParserContext;
import org.mvel2.ScriptMemoryOverflowException;
@ -44,6 +43,7 @@ import org.thingsboard.server.common.stats.TbApiUsageStateClient;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import java.io.Serializable;
import java.util.Collections;
import java.util.Map;
import java.util.Optional;
import java.util.UUID;
@ -115,7 +115,8 @@ public class DefaultMvelInvokeService extends AbstractScriptInvokeService implem
executor = MoreExecutors.listeningDecorator(ThingsBoardExecutors.newWorkStealingPool(threadPoolSize, "mvel-executor"));
try {
// Special command to warm up MVEL engine
MVEL.compileExpression("var warmUp = {}; warmUp", new SandboxedParserContext(parserConfig));
Serializable script = MVEL.compileExpression("var warmUp = {}; warmUp", new SandboxedParserContext(parserConfig));
MVEL.executeTbExpression(script, new ExecutionContext(), Collections.emptyMap());
} catch (Exception e) {
// do nothing
}