Ensure that the function response for an invocation by API Gateway has been encapsulated and contains body(String), statusCode(int), headers(Map), and isBase64Encoded(boolean).
The following is an example response returned by a Node.js function that uses an APIG trigger:
exports.handler = function (event, context, callback) {
const response = {
'statusCode': 200,
'isBase64Encoded': false,
'headers': {
"Content-type": "application/json"
},
'body': 'Hello, FunctionGraph with APIG',
}
callback(null, response);
}
The following is an example response returned by a Java function that uses an APIG trigger:
import java.util.Map;
public HttpTriggerResponse index(String event, Context context){
String body = "<html><title>FunctionStage</title>"
+ "<h1>This is a simple APIG trigger test</h1><br>"
+ "<h2>This is a simple APIG trigger test</h2><br>"
+ "<h3>This is a simple APIG trigger test</h3>"
+ "</html>";
int code = 200;
boolean isBase64 = false;
Map<String, String> headers = new HashMap<String, String>();
headers.put("Content-Type", "text/html; charset=utf-8");
return new HttpTriggerResponse(body, headers, code, isBase64);
}
class HttpTriggerResponse {
private String body;
private Map<String, String> headers;
private int statusCode;
private boolean isBase64Encoded;
public HttpTriggerResponse(String body, Map<String,String> headers, int statusCode, boolean isBase64Encoded){
this.body = body;
this.headers = headers;
this.statusCode = statusCode;
this.isBase64Encoded = isBase64Encoded;
}
}