Can't receive an HTTP response from Mule - java

I am creating a basic service component that takes a URL as input at http inbound endpoint. Code snippet from the mule-config file is as follows:
<service name="follow">
<inbound>
<http:inbound-endpoint address="http://localhost:8765/follow/" synchronous="true"/>
</inbound>
<component class="org.mule.application.mytwitter.Follow" />
</service>
and the function that is called from the Java component class is:
public Object onCall(MuleEventContext eventContext) throws Exception {
MuleMessage msg = eventContext.getMessage();
String str = msg.getStringProperty("http.request", null);
msg.setPayload(str);
msg.setStringProperty("http.status","200");
msg.setStringProperty("Content-Type","text/html");
System.out.println("Reached here:" + str);
return msg;
}
I wish to receive an HTTP response(payload) by hitting the service through CURL as:
curl -vv "http://localhost:8765/follow/"
but I'm not receiving any payload:
> * About to connect() to localhost port 8765 (#0)
* Trying ::1... connected
* Connected to localhost (::1) port 8765 (#0)
> GET /follow/ HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15
> Host: localhost:8765
> Accept: */*
>
< HTTP/1.1 200 OK
< Content-Type: text/plain
< Date: Tue, 27 Dec 2011 03:14:00 IST
< Server: Mule Core/2.1.2
< Expires: Tue, 27 Dec 2011 03:14:00 IST
< Content-Length: 0
< Connection: close
<
* Closing connection #0
Am I missing something? The function in component class is being called and output is printed in console.

Are you intentionally using such an old version of mule? There's a much newer 3.2.1 version available. And I suggest you to move to flow-style messaging instead of services.
But to answer your problem, if you want to have the response payload to print out, then you should add a string transformer to you configuration. I don't remember exactly how to configure this to the service element, but if you use flow's then you can add a response block to the end of the flow.
<http:http-response-to-string-transformer />
I hope this helps.

never mind guys. i figured out something and it works fine now. there's an attribute called syncResponse for inbound-endpoint. Setting it to true makes it work synchronously. I think some problem to do with Mule 2.1.2 or maybe some system settings.

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I'm currently working building an endpoint that will make a couple of requests to an external API. In this endpoint I'm logging all of the request bodies to the terminal. But I'm having an issue where jerseys LoggingFeature doesn't log the complete response body for a request that is done. The log gets cut in the middle of the body. I've tried messing around with the logger level, verbosity but that did nothing. I tried changing maxEntitySize to be a large value but that doesn't change anything either, I'm not really sure what the issue is and why it won't log the complete response body. I've also tried logging to a file instead of the terminal but unfortunately I got the same result.
Here's what the log looks like (as it's proprietary software I had to change some information)
INFO [2022-10-06 13:54:04,261] se.bla.bla.bla.clients.BlaClientImpl: 1 * Sending client request on thread dw-18 - GET /api/bla/log/98014384
1 > GET https://url.com/2574339575
1 > Accept: application/json
1 > Authorization: Bearer tokenstuff
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1 < Cache-Control: no-cache
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1 < Date: Thu, 06 Oct 2022 13:54:04 GMT
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And I've registered the logger like so.
val restlog = getLogger(BlaClientImpl::class.java.name)
restlog.addHandler(FileHandler("rest.log", 83886080, 1))
val requestBuilder =
client
.register(
LoggingFeature(
restlog,
Level.INFO,
LoggingFeature.Verbosity.PAYLOAD_ANY,
83886080
)
)
I'm quite new to the Kotlin/Java world so maybe I'm missing something fundamental.
The issue was a settings with Dropwizard/Jersey. Apparently I had to set gzipEnabled = true

RestTemplate with Proxy with kerberos authentication in Java/Kotlin

I'm trying to access rest api through my companies proxy server this requires me authenticate with the proxy.
I can access the outside world using curl with the parameters:
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I receive the following output:
Enter proxy password for user '$user':
* Trying $proxyIP:$proxyPort...
* Connected to $proxyURL ($proxyIP) port $proxyPort (#0)
* allocate connect buffer
* Establish HTTP proxy tunnel to google.com:443
* Proxy auth using Negotiate with user 'bradsw'
> CONNECT google.com:443 HTTP/1.1
> Host: google.com:443
> Proxy-Authorization: Negotiate ${shortBase64token}
> User-Agent: curl/7.83.1
> Proxy-Connection: Keep-Alive
>
< HTTP/1.1 407 Proxy Authentication Required
< Proxy-Authenticate: NEGOTIATE ${longerBase64token}
< Cache-Control: no-cache
< Pragma: no-cache
< Content-Type: text/html; charset=utf-8
< Proxy-Connection: Keep-Alive
< Connection: Keep-Alive
< Content-Length: 5621
<
* Ignore 5621 bytes of response-body
* Establish HTTP proxy tunnel to google.com:443
* Proxy auth using Negotiate with user '$user'
> CONNECT google.com:443 HTTP/1.1
> Host: google.com:443
> Proxy-Authorization: Negotiate ${evenLongerBase64token}
> User-Agent: curl/7.83.1
> Proxy-Connection: Keep-Alive
>
< HTTP/1.1 200 Connection established
<
* Proxy replied 200 to CONNECT request
* CONNECT phase completed
* schannel: disabled automatic use of client certificate
* ALPN: offers http/1.1
* ALPN: server accepted http/1.1
> GET / HTTP/1.1
> Host: google.com
> User-Agent: curl/7.83.1
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 301 Moved Permanently
< Location: https://www.google.com/
< Content-Type: text/html; charset=UTF-8
< Date: Thu, 29 Sep 2022 22:09:00 GMT
< Expires: Sat, 29 Oct 2022 22:09:00 GMT
< Cache-Control: public, max-age=2592000
< Server: gws
< Content-Length: 220
< X-XSS-Protection: 0
< X-Frame-Options: SAMEORIGIN
< Alt-Svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
I have tried a million variations of
RestTemplate(HttpComponentsClientHttpRequestFactory(
HttpClientBuilder.create()
.setProxy(HttpHost(proxyUrl, proxyPort))
//other calls here to set things up
.build()
)
)
Nothing seems to authenticate correctly. I get back a 407 PROXY_AUTHENTICATION_REQUIRED with the companies default call the help desk if your browser doesn't work page in my stack trace.
Our systems are configured with an appropriate kbr5.config file so that should not be the issue & in other places in the code we are getting an SSO token a based on a ticket stored by kinit using the equivalent of RestTemplate().getForEntity("${sso-endpoint}", String::class.java).
I would ideally like to be able to delegate credentials to the OS via logged on user (either windows or REL based Linux systems) though I would consider simply authenticating at all a win at this point. I'm working in Kotlin but can easily translate a Java solution to Kotlin.
Any ideas appreciated?

Spring Boot returns "200 OK" (Empty Response) for resource directory, not file

I am building a basic Spring Boot app, using the built is resource handler.
registry.addResourceHandler("/**")
.addResourceLocations("classpath:/public/")
.setCachePeriod(60 * 60 * 24 * 365)
.resourceChain(true)
.addResolver(versionResourceResolver);
The file structure is as follows:
src
main
java
..
resources
public
js
app.js
Making a request to localhost:8080/js/app.js works as expected, returning the contents of the file with the correct MIME type.
However, making a request to the container directory also returns 200 OK and an empty response!
$ curl -v http://localhost:8080/js/
* Trying ::1...
* Connected to localhost (::1) port 8080 (#0)
> GET /js/ HTTP/1.1
> Host: localhost:8080
> User-Agent: curl/7.49.1
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Mon, 28 Nov 2016 21:13:26 GMT
< X-Application-Context: application
< Last-Modified: Mon, 28 Nov 2016 21:06:28 GMT
< Cache-Control: max-age=31536000
< Accept-Ranges: bytes
< Content-Type: application/octet-stream
< Content-Length: 0
<
* Connection #0 to host localhost left intact
How can I get this to return 404 Not Found instead? It's not a huge issue, but definitely not what I'd expected.

Dropwizard resource error response

In my dropwizard resource, I'm using the built in Jackson JSON object mapping to bind my data.
public class WidgetServiceResource {
#POST
#Path("/widget")
#Produces(MediaType.APPLICATION_JSON)
public Response foo(ModelParameters c) {
return Response.ok(c.value).build();
}
What I noticed however, is when I POST a bad body, the JSON doesn't parse, and I'm served with a response that doesn't meet my company's communication standards. How can I customize the response?
You need to deregister all default exception mappers and then register your own to handle the exception you want:
For example, in your yaml, you need:
server:
registerDefaultExceptionMappers: false
rootPath: /api/*
requestLog:
appenders: []
applicationConnectors:
- type: http
port: 9085
logging:
level: INFO
Note: registerDefaultExceptionMappers: false will tell DW to not register any ExceptionMappers.
Then, you can implement them yourself. In my case, I will just do a catch-all handler:
public class MyExceptionMapper implements ExceptionMapper<Exception> {
#Override
public Response toResponse(Exception exception) {
return Response.status(400).entity("This makes no sense").build();
}
}
This reacts to any exception and responds with a 400 and a String.
Finally, registering in the main class:
environment.jersey().register(MyExceptionMapper.class);
And a test for proof:
artur#pandaadb:~/dev/eclipse/eclipse_jee$ curl -v "http://localhost:9085/api/viewTest"
* Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 9085 (#0)
> GET /api/viewTest HTTP/1.1
> Host: localhost:9085
> User-Agent: curl/7.47.0
> Accept: */*
>
< HTTP/1.1 400 Bad Request
< Date: Wed, 12 Oct 2016 10:16:44 GMT
< Content-Type: text/html
< Content-Length: 19
<
* Connection #0 to host localhost left intact
This makes no sense
Hope that helps,
-- Artur

ATG 11 REST call with parameters

I need to call method using ATG 11 REST API.
public String getString(String str) {
return str;
}
I created actor properties configuration like this:
$class=atg.service.actor.ActorChainService
definitionFile=/path/to/service/accountServiceActor.xml
And that my accountServiceActor.xml:
<?xml version="1.0" encoding="UTF-8"?>
<actor-template default-chain-id="cartService" xsi:noNamespaceSchemaLocation="http://www.atg.com/xsds/actorChain_1.0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<actor-chain id="getString" transaction="TX_SUPPORTS">
<component id="getString" name="/path/to/service/AccountService"
method="getString" method-return-var="str">
<input name="str" value="${param.str}" />
<output id="str" name="str" value="${str}" />
</component>
</actor-chain>
</actor-template>
Also I updated AccessControlServlet.properties and ActorChainRestRegistry.properties
So my rest call is here:
curl -L -v -b customer_cookies.txt -X POST -H "Content-Type: application/json" -d '{ "str" : "value" }' http://localhost:7003/path/to/service/AccountServiceActor/getString
And i am getting this error:
* Adding handle: conn: 0x7f8eb9803000
* Adding handle: send: 0
* Adding handle: recv: 0
* Curl_addHandleToPipeline: length: 1
* - Conn 0 (0x7f8eb9803000) send_pipe: 1, recv_pipe: 0
* About to connect() to localhost port 7003 (#0)
* Trying ::1...
* Connected to localhost (::1) port 7003 (#0)
> POST /path/to/service/AccountServiceActor/getString HTTP/1.1
> User-Agent: curl/7.30.0
> Host: localhost:7003
> Accept: */*
> Cookie: DYN_USER_CONFIRM=f0f599f9f11aa5571d7055c2b4c7c9d5; DYN_USER_ID=240004; JSESSIONID=6iUR5qvjjBHPhSNq6zMh_B6dn18lwhKFWvPbOZxTekUIhsFPqf3r!-1528908093
> Content-Type: application/json
> Content-Length: 20
>
* upload completely sent off: 20 out of 20 bytes
< HTTP/1.1 500 Internal Server Error
< Connection: close
< Date: Tue, 26 Aug 2014 11:19:21 GMT
< Content-Length: 265
< Content-Type: text/html; charset=UTF-8
< X-ATG-Version: version=QVRHUGxhdGZvcm0vMTEuMA==
* Replaced cookie JSESSIONID="fcMSCqdKrO-PvMyLalmJHSnuHBa0VEBaJscD01nZYZDOXCXs6Q3j!-1528908093" for domain localhost, path /, expire 0
< Set-Cookie: JSESSIONID=fcMSCqdKrO-PvMyLalmJHSnuHBa0VEBaJscD01nZYZDOXCXs6Q3j!-1528908093; path=/; HttpOnly
< X-Powered-By: Servlet/3.0 JSP/2.2
<
CONTAINER:atg.service.actor.ActorException: There was an error while trying to find a method.; SOURCE:java.lang.NoSuchMethodException: path.to.service.impl.AccountService.getString(null)
What i am doing wrong? Help me to make my configuration correct.
<input name="str" class-name="java.lang.String" value="${param.str}" />
Please add class-name attribute in your input parameter:Snippet:
1-Enclose http://localhost:7003/path/to/service/AccountServiceActor/getString in double qoutes,i.e
"http://localhost:7003/path/to/service/AccountServiceActor/getString".
2-Also replace '{ "str" : "value" }' with "{ "str" : "value" }"
Please make sure of the following points :
Actor property file name and Actor xml file name should be the same
i.e. in your case accountServiceActor.xml and AccountServiceActor.properties
Use the URL with /rest/model/ i.e. in your case http://localhost:7003/rest/model/path/to/service/AccountServiceActor/getString
Make sure that in the ActorChainRestRegistry.propeties the URL is correctly registered i.e. in your case registeredUrls+=/path/to/service/accountServiceActor/getString
Make sure that the method getString() exist in the component /path/to/service/AccountService :)

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