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GH-676 Relax SpEL evaluation failures for input header enrichment

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Add documentation

Resolves #676
This commit is contained in:
Oleg Zhurakousky
2021-05-24 15:18:28 +02:00
parent 9e8d7d3d19
commit 22e945009a
3 changed files with 117 additions and 14 deletions
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21
spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/catalog/InputEnricher.java
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@@ -20,6 +20,8 @@ import java.util.Map;
import java.util.Map.Entry;
import java.util.function.Function;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.expression.MapAccessor;
import org.springframework.expression.BeanResolver;
import org.springframework.expression.Expression;
@@ -37,7 +39,9 @@ import org.springframework.util.Assert;
* @since 3.1.3
*
*/
public class InputEnricher implements Function<Object, Object> {
class InputEnricher implements Function<Object, Object> {
protected Log logger = LogFactory.getLog(InputEnricher.class);
private final Map<String, Map<String, String>> headerExpressions;
@@ -62,8 +66,19 @@ public class InputEnricher implements Function<Object, Object> {
Map<String, String> mappings = this.headerExpressions.get("0");
for (Entry<String, String> keyValueExpressionEntry : mappings.entrySet()) {
Expression expression = this.spelParser.parseExpression(keyValueExpressionEntry.getValue());
Object value = expression.getValue(this.evalContext, input, Object.class);
messageBuilder.setHeader(keyValueExpressionEntry.getKey(), value);
try {
Object value = expression.getValue(this.evalContext, input, Object.class);
messageBuilder.setHeader(keyValueExpressionEntry.getKey(), value);
}
catch (Exception e) {
String message = "Failed while evaluating expression \"" + keyValueExpressionEntry.getValue() + "\" on incoming message";
if (logger.isDebugEnabled()) {
logger.warn(message + ": " + input, e);
}
else {
logger.warn(message);
}
}
}
input = messageBuilder.build();
}