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create a Rest API with customized header request

I'm falling into a problem this morning with a custom request between two application, what i need to do is to let application able to talk eachother with two Rest API cause i need to do some actions on the first application by the second. The two applications are developed with springboot.
Suppose to call this two applications admin and superadmin
superadmin send a request with a RestAPI and a customized header -> name = key value = 1234
admin recieve the request and first of all check if the header is present or not, after that the header is finded it can proceed to do all the task.
Here's the code that i've developed :
SUPERADMIN :
#PostMapping(value="/test_api_header")
public ResponseEntity<String> test_API(#RequestParam String url) {
RestTemplate template = new RestTemplate();
URI targetUrl = UriComponentsBuilder.fromUriString(url) // Build the base link
.path("/test_API") // Add path
.build() // Build the URL
.encode() // Encode any URI items that need to be encoded
.toUri(); // Convert to URI
MultiValueMap<String, String> headers = new LinkedMultiValueMap<>();
headers.add("Content-Type", "application/json");
headers.add("superadminKey", "123456abc");
// build the request
ResponseEntity<String> entity = template.exchange(targetUrl, HttpMethod.GET, new HttpEntity<String>(headers), String.class);
return entity;
}
ADMIN :
#Value("123456abc")
private String saKey;
#GetMapping(value = "/superadmin/test_API")
public String test_API(HttpServletRequest request) {
if (request.getHeader("superadminKey") == saKey) {
return "Finally";
} else {
return "Nothing to do, header not present";
}
}
The SUPERADMIN is able to communicate with the RESTApi in the ADMIN application, in fact on postman i received the answer : Nothing to do, header not present, but i really cannot be able to set that customized header in the superadmin request cause i cannot found it also on postman request in the section "headers".
I've seen that i could also create a customized API Key for this special case, but really don't know how it works, if someone could help me I would be very grateful!

Google Cloud Platform - cloud functions API - 401 Unauthorized

I'm struggling with invoking GCP cloud functions via REST API using Java.
The steps that I've performed to do it were:
create a service account with role "Cloud Functions Invoker"
download JSON key file for the newly created service account
in my code, obtain an access token using the following method:
private String getAuthToken() {
File credentialsPath = new File(PATH_TO_JSON_KEY_FILE);
GoogleCredentials credentials;
try (FileInputStream serviceAccountStream = new FileInputStream(credentialsPath)) {
credentials = ServiceAccountCredentials.fromStream(serviceAccountStream);
return credentials
.createScoped(Lists.newArrayList("https://www.googleapis.com/auth/cloud-platform"))
.refreshAccessToken()
.getTokenValue();
} catch (IOException e) {
throw new RuntimeException("Action could not be performed");
}
}
perform a REST call, using the created token:
public <Payload, Response> ResponseEntity<Response> callCloudFunction(
String endpoint,
Payload payload,
Class<Response> klazz
) {
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
headers.setContentType(MediaType.APPLICATION_JSON);
String url = gCloudUrl + endpoint;
String token = getAuthToken();
String payloadString = null;
if (payload != null) {
try {
ObjectMapper objectMapper = new ObjectMapper();
payloadString = objectMapper.writeValueAsString(payload);
} catch (JsonProcessingException e) {
System.out.println(e.getMessage());
throw new RuntimeException("Could not perform action");
}
}
headers.add("Authorization", String.format("Bearer %s", token));
HttpEntity<String> entity = new HttpEntity<>(payloadString, headers);
return restTemplate.exchange(url, HttpMethod.POST, entity, klazz);
}
The implementation looks fine, but in response I'm getting 401 Unauthorized.
Unfortunately, GCP documentation is not really helpful. I think I've searched through all the possible places.

First of all, agree, it's not clear...
Then, you have to know (and it's not clear again) that you need an access token to call Google Cloud API, but and identity token to call IAP (on App Engine for example) or private Cloud Function and Cloud Run. And this identity token need to be signed by Google.
And, as mentioned in the code, you need to have a service account on your computer, but I recommend you to avoid this on GCP, it's not required if you use default authentication (see my code, on your computer set the GOOGLE_APPLICATION_CREDENTIALS env var that points to the service account key file). The best way is to not use service account key file on your computer also, but it's not yet possible (that is a security issue IMO, and I'm discussing with Google on this...)
Anyway, here a code snippet which works in Java (nowhere in the documentation...)
String myUri = "https://path/to/url";
// You can use here your service account key file. But, on GCP you don't require a service account key file.
// However, on your computer, you require one because you need and identity token and you can generate it with your user account (long story... I'm still in discussion with Google about this point...)
Credentials credentials = GoogleCredentials.getApplicationDefault().createScoped("https://www.googleapis.com/auth/cloud-platform");
IdTokenCredentials idTokenCredentials = IdTokenCredentials.newBuilder()
.setIdTokenProvider((IdTokenProvider) credentials)
.setTargetAudience(myUri).build();
HttpRequestFactory factory = new NetHttpTransport().createRequestFactory(new HttpCredentialsAdapter(idTokenCredentials));
HttpRequest request = factory.buildGetRequest(new GenericUrl(myUri));
HttpResponse httpResponse = request.execute();
System.out.println(CharStreams.toString(new InputStreamReader(httpResponse.getContent(), Charsets.UTF_8)));
NOTE If you want to continue to use RestTemplate object and set manually your token, you can generate it like this
String token = ((IdTokenProvider) credentials).idTokenWithAudience(myUri, Collections.EMPTY_LIST).getTokenValue();
System.out.println(token);

Issue creating repository github v3 api via Java

I'm trying to send a post request to github to create a repository. I've got oauth 2.0 working and the request is correctly signed but github is just returning "Problems parsing JSON"
I'm using Scribe for the oauth side of things and as far as I can tell I've added JSON to the URL but I'm not 100% certain I'm doing it correctly, or am I just missing headers or something?
#POST
#Path("create_repo/{userid}")
#Produces(MediaType.APPLICATION_JSON)
public Response createRepo(#PathParam("userid") String userid) {
OAuthService service = createService().build();
User user = collection.findOneById(userid);
final OAuthRequest request = new OAuthRequest(Verb.POST, "https://api.github.com/user/repos", service);
Token token = new Token(user.getGithubToken(), "SECRET");
service.signRequest(token, request);
request.addHeader("Content-type", "application/vnd.github.v3+json");
request.addHeader("X-OAuth-Scopes", "repo");
request.addQuerystringParameter("name", "Test_v1");
LOGGER.info("Built request: " + request.getCompleteUrl());
final com.github.scribejava.core.model.Response response = request.send();
return Response.ok(response.getBody()).build();
}
The built URL looks like: https://api.github.com/user/repos?access_token=XXX_SECRET_XXX&name=Test_v1
I've also tried swapping the access_token after the params but same result.
Appreciate the any help.

Well I solved this by creating a object, serializing it, and adding it as a payload.
#POST
#Path("create_repo/{userId}/{projectId}")
#Produces(MediaType.APPLICATION_JSON)
public Response createRepo(#PathParam("userId") String userId, #PathParam("projectId") String projectId) {
// Setup collections
User user = userCollection.findOneById(userId);
ProjectDescription projectDescription = projectCollection.findOneById(projectId);
// Build repository object from project description
GithubRepository repository = new GithubRepository();
repository.setName(projectDescription.getTitle());
repository.setDescription(projectDescription.getDescription());
// Serialize object
ObjectMapper mapper = new ObjectMapper();
String jsonInString = null;
try {
jsonInString = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(repository);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
// Build request
OAuthService service = createService().build();
final OAuthRequest request = new OAuthRequest(Verb.POST, PROTECTED_RESOURCE_URL + "/user/repos", service);
request.addHeader("content-type", "application/json");
request.addPayload(jsonInString);
// Sign and send request
Token token = new Token(user.getGithubToken(), "secret");
service.signRequest(token, request);
request.send();
return Response.status(201).build();
}
However, I'd still like to know where I went wrong with my first attempt.

Query string parameters are ignored in POST requests. That's why it worked when passing them in the request body.
From GitHub's API Overview docs:
Parameters
Many API methods take optional parameters. For GET requests, any parameters not specified as a segment in the path can be passed as an HTTP query string parameter:
curl -i "https://api.github.com/repos/vmg/redcarpet/issues?state=closed"
In this example, the ‘vmg’ and ‘redcarpet’ values are provided for the :owner and :repo parameters in the path while :state is passed in the query string.
For POST, PATCH, PUT, and DELETE requests, parameters not included in the URL should be encoded as JSON with a Content-Type of ‘application/json’:
$ curl -i -u username -d '{"scopes":["public_repo"]}' https://api.github.com/authorizations

Trying to use bing translator API with Robospice in Android

I need to implement robospice for doing the networking part in my Translator app. I previously used async task class and it was working fine, but now i want to improve my application with implementing robospice. I'am trying to execute the following code but it doesn't't throw any exception it just never executes....
#Override
public TranslatedText loadDataFromNetwork() throws Exception {
String jsonString = getJsonString();
String headerValue = getHeaderValue(jsonString);
String text = pair.getWordPairs().getWordFrom();
String languageFrom = pair.getLanguagePairs().getLanguageFrom().getCode();
String languageTo = pair.getLanguagePairs().getLangougateTo().getCode();
String uri = String
.format("http://api.microsofttranslator.com/v2/Http.svc/Translate?text=%s&from=%s&to=%s&contentType=text/html",
URLEncoder.encode(text, "UTF-8"),
URLEncoder.encode(languageFrom, "UTF-8"),
URLEncoder.encode(languageTo, "UTF-8"));
HttpHeaders headers = new HttpHeaders();
headers.set("Authorization", headerValue);
// Create a new RestTemplate instance
RestTemplate restTemplate = new RestTemplate();
// Add the Simple XML message converter
getRestTemplate().getMessageConverters().add(new SimpleXmlHttpMessageConverter());
//set the headerValue in the Entity
org.springframework.http.HttpEntity<?> request = new org.springframework.http.HttpEntity<Object>(headerValue);
// Make the HTTP GET request, marshaling the response from XML to an
// EventList
Log.v("request","Making request!");
//This line never finish execuitng, doesen't throw exception or anything in logCat
ResponseEntity<Object> responseEntity = getRestTemplate().exchange(uri, HttpMethod.GET, request, null);
Log.v("request", responseEntity.getBody().toString());
Log.d("Load Data From Network", request.getBody().toString());
return null;
}
The last thing it shows in log cat is Request First!! And nothing after that. It never even gets to The Request Listener onRequestFailure.
Can any 1 tell me what i do wrong ?

This is what look weird to me in your code:
ResponseEntity<Object> and null as 4th parameter of the exchange method are not correct. You need to provide a type which represents the response you get from the server.
The object returned by loadDataFromNetwork() is what you will get in the onRequestSuccess() method. Returning null is not a good idea, in my opinion.

I fixed the problem. So if you need to handle stream you will have to provide the following code
ResponseEntity<byte[]> responseEntity = getRestTemplate().exchange(uri, HttpMethod.GET, request, byte[]);

Calling an RESTFul using Spring-Android

Here is my Strifified json,
{
"Request":{
"Object1":{
"Key1":"Value1"
},
"Object2":{
"Key2":"Value2"
}
},
"Object3":{
"Key3":"Value3"
}
}
I am forming this using Gson. String Stringifiedjson = new Gson().toJson(user);
Here is what i am trying to achive.
RestTemplate rest = new RestTemplate();
String url = "";
String event = rest.getForObject(url, Stringifiedjson);
How would i send to my REST Service and get back my result in onEventHandler or onErrorHandler. I am basically from JavaScript background.
Why does the method getForObject does not accept String, String as params.
Update:
AuthenticateUser user = new AuthenticateUser(credential, Header);
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.setContentType(new MediaType("application","json"));
//HttpEntity<AuthenticateUser> requestEntity = new HttpEntity<AuthenticateUser>(user, requestHeaders);
RestTemplate restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(new MappingJacksonHttpMessageConverter());
restTemplate.getMessageConverters().add(new StringHttpMessageConverter());
String url = "url";
String result = restTemplate.postForObject(url, AuthenticateUser.class, String.class);
Attached is the pastie of what exception i am getting.
http://pastie.org/private/efyfvvbxyxdsvm3lvv7q

About the second question: I just found this example (you could take a look at the entire doc ;) )
2.7.1 Basic Usage Example
The following example shows a query to google for the search term "SpringSource".
String url = "https://ajax.googleapis.com/ajax/services/search/web?v=1.0&q={query}";
// Create a new RestTemplate instance
RestTemplate restTemplate = new RestTemplate();
// Add the String message converter
restTemplate.getMessageConverters().add(new StringHttpMessageConverter());
// Make the HTTP GET request, marshaling the response to a String
String result = restTemplate.getForObject(url, String.class, "SpringSource");
getForObject
public <T> T getForObject(URI url,
Class<T> responseType)
throws RestClientException
Description copied from interface: RestOperations
Retrieve a representation by doing a GET on the URL . The response (if any) is converted and returned.
Specified by:
getForObject in interface RestOperations
Parameters:
url - the URL
responseType - the type of the return value
Returns:
the converted object
Throws:
RestClientException
The exception in your stacktrace could be related to the same issue of this post. The problem occurs when your app tries to make a connection in the main thread.

10-23 15:46:10.106: E/AndroidRuntime(1038): FATAL EXCEPTION: main
10-23 15:46:10.106: E/AndroidRuntime(1038): android.os.NetworkOnMainThreadException
The NetworkOnMainThreadException is thrown when you execute any network operation in your application main ui thread (see also Keeping Your App Responsive. This is not allowed. You'll have to use a background thread for network operation, see Worker threads on http://developer.android.com/guide/components/processes-and-threads.html