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GH-716 Add support for returning custom status code

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Resolves #716
This commit is contained in:
Oleg Zhurakousky
2021-07-30 12:42:48 +02:00
parent ce1265d925
commit ffd4e43d4b
7 changed files with 146 additions and 31 deletions
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12
spring-cloud-function-adapters/spring-cloud-function-adapter-aws/src/main/java/org/springframework/cloud/function/adapter/aws/AWSLambdaUtils.java
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@@ -29,7 +29,9 @@ import java.util.concurrent.atomic.AtomicReference;
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.events.APIGatewayProxyRequestEvent;
import com.amazonaws.services.lambda.runtime.events.APIGatewayProxyResponseEvent;
import com.amazonaws.services.lambda.runtime.events.APIGatewayV2HTTPEvent;
import com.amazonaws.services.lambda.runtime.events.APIGatewayV2HTTPResponse;
import com.amazonaws.services.lambda.runtime.events.KinesisEvent;
import com.amazonaws.services.lambda.runtime.events.S3Event;
import com.amazonaws.services.lambda.runtime.events.SNSEvent;
@@ -163,7 +165,13 @@ final class AWSLambdaUtils {
@SuppressWarnings({ "rawtypes", "unchecked" })
public static byte[] generateOutput(Message requestMessage, Message<byte[]> responseMessage,
ObjectMapper objectMapper) {
ObjectMapper objectMapper, Type functionOutputType) {
Class<?> outputClass = FunctionTypeUtils.getRawType(functionOutputType);
if (outputClass != null && (APIGatewayV2HTTPResponse.class.isAssignableFrom(outputClass)
|| APIGatewayProxyResponseEvent.class.isAssignableFrom(outputClass))) {
return responseMessage.getPayload();
}
if (!objectMapper.isEnabled(MapperFeature.ACCEPT_CASE_INSENSITIVE_PROPERTIES)) {
@@ -190,7 +198,7 @@ final class AWSLambdaUtils {
}
String body = responseMessage == null
? "\"OK\"" : new String(responseMessage.getPayload(), StandardCharsets.UTF_8).replaceAll("\\\"", "\"");
? "\"OK\"" : new String(responseMessage.getPayload(), StandardCharsets.UTF_8).replaceAll("\\\"", "");
response.put("body", body);
if (responseMessage != null) {

2
spring-cloud-function-adapters/spring-cloud-function-adapter-aws/src/main/java/org/springframework/cloud/function/adapter/aws/CustomRuntimeEventLoop.java
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@@ -102,7 +102,7 @@ final class CustomRuntimeEventLoop {
logger.debug("Reply from function: " + responseMessage);
}
byte[] outputBody = AWSLambdaUtils.generateOutput(eventMessage, responseMessage, mapper);
byte[] outputBody = AWSLambdaUtils.generateOutput(eventMessage, responseMessage, mapper, function.getOutputType());
ResponseEntity<Object> result = rest
.exchange(RequestEntity.post(URI.create(invocationUrl)).body(outputBody), Object.class);

22
spring-cloud-function-adapters/spring-cloud-function-adapter-aws/src/main/java/org/springframework/cloud/function/adapter/aws/FunctionInvoker.java
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@@ -26,6 +26,7 @@ import java.util.List;
import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestStreamHandler;
import com.amazonaws.services.lambda.runtime.events.APIGatewayProxyResponseEvent;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@@ -39,6 +40,7 @@ import org.springframework.cloud.function.context.config.RoutingFunction;
import org.springframework.cloud.function.utils.FunctionClassUtils;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.core.env.Environment;
import org.springframework.http.HttpStatus;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageHeaders;
import org.springframework.messaging.support.MessageBuilder;
@@ -79,10 +81,22 @@ public class FunctionInvoker implements RequestStreamHandler {
Message requestMessage = AWSLambdaUtils
.generateMessage(payload, new MessageHeaders(Collections.emptyMap()), function.getInputType(), this.objectMapper, context);
Object response = this.function.apply(requestMessage);
try {
Object response = this.function.apply(requestMessage);
byte[] responseBytes = this.buildResult(requestMessage, response);
StreamUtils.copy(responseBytes, output);
}
catch (Exception e) {
logger.error(e);
StreamUtils.copy(this.buildExceptionResult(requestMessage, e), output);
}
}
byte[] responseBytes = this.buildResult(requestMessage, response);
StreamUtils.copy(responseBytes, output);
private byte[] buildExceptionResult(Message<?> requestMessage, Exception exception) throws IOException {
APIGatewayProxyResponseEvent event = new APIGatewayProxyResponseEvent();
event.setStatusCode(HttpStatus.EXPECTATION_FAILED.value());
event.setBody(exception.getMessage());
return this.objectMapper.writeValueAsBytes(event);
}
@SuppressWarnings("unchecked")
@@ -113,7 +127,7 @@ public class FunctionInvoker implements RequestStreamHandler {
else {
responseMessage = (Message<byte[]>) output;
}
return AWSLambdaUtils.generateOutput(requestMessage, responseMessage, this.objectMapper);
return AWSLambdaUtils.generateOutput(requestMessage, responseMessage, this.objectMapper, function.getOutputType());
}
private void start() {