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* Add meaningful exception when no function definition in catalog

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This commit is contained in:
abilan
2023-05-18 13:47:29 -04:00
committed by Oleg Zhurakousky
parent 42a5319c99
commit d0b0d9210d
2 changed files with 33 additions and 2 deletions
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11
spring-cloud-function-integration/src/main/java/org/springframework/cloud/function/integration/dsl/FunctionLookupHelper.java
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@@ -23,6 +23,7 @@ import java.util.function.Function;
import java.util.function.Supplier;
import org.springframework.cloud.function.context.FunctionCatalog;
import org.springframework.util.Assert;
/**
* The helper class to lookup functions from the catalog in lazy manner and cache their instances.
@@ -55,7 +56,13 @@ public class FunctionLookupHelper {
}
private <T> Supplier<T> lazyLookup(Class<?> functionType, String functionDefinition) {
return memoize(() -> this.functionCatalog.lookup(functionType, functionDefinition));
return memoize(() -> requireNonNull(functionType, functionDefinition));
}
private <T> T requireNonNull(Class<?> functionType, String functionDefinition) {
T function = this.functionCatalog.lookup(functionType, functionDefinition);
Assert.notNull(function, () -> "No '" + functionDefinition + "' in the catalog");
return function;
}
/**
@@ -72,7 +79,7 @@ public class FunctionLookupHelper {
synchronized (value) {
val = value.get();
if (val == null) {
val = Objects.requireNonNull(delegate.get());
val = delegate.get();
value.set(val);
}
}