42 lines
1.3 KiB
Java
42 lines
1.3 KiB
Java
package com.example;
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import java.util.function.Function;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.cloud.function.context.FunctionRegistration;
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import org.springframework.cloud.function.context.FunctionType;
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import org.springframework.cloud.function.context.FunctionalSpringApplication;
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import org.springframework.context.ApplicationContextInitializer;
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import org.springframework.context.support.GenericApplicationContext;
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@SpringBootApplication
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public class LambdaApplication
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implements ApplicationContextInitializer<GenericApplicationContext> {
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private static Log logger = LogFactory.getLog(LambdaApplication.class);
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public Function<String, String> uppercase() {
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return value -> {
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logger.info("Processing: " + value);
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if (value.equals("error")) {
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throw new IllegalArgumentException("Intentional");
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}
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return value.toUpperCase();
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};
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}
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public static void main(String[] args) {
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FunctionalSpringApplication.run(LambdaApplication.class, args);
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}
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@Override
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public void initialize(GenericApplicationContext context) {
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context.registerBean("uppercase", FunctionRegistration.class,
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() -> new FunctionRegistration<>(uppercase()).type(
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FunctionType.from(String.class).to(String.class)));
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}
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}
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