I want to write code that dynamically connects to an OpenAPI endpoint. I don't want to use code generation.
Something like so:
OpenAPI openAPI = new OpenAPIParser().readLocation(...).getOpenAPI();
String path = ...;
String method = "get";
Map<String, String> parameters = ...;
Operation operation = openAPI.get(path).readOperationsMap().get(method);
//What do I do next?!
WebTaget target = WhatGoesHere(path, parametrs);
Response response = target.request()...;
There must be a library out there that can take an OpenAPI definition and make connections right?
Related
This documentation states that one can perform certain operations for a WildFly server via REST: https://docs.jboss.org/author/display/WFLY10/The%20HTTP%20management%20API.html
However, there is no example how to add/remove/read a system property. I have no idea how the HTTP body has to look for those calls.
The answer of the following StackOverflow question says that the class SimpleOperation used in the example does not really exist: Wildfly 10 management Rest API
I would like to do the following operations:
/system-property=BLA:remove
/system-property=BLA:add(value="1,2,3,4")
and to read it.
How can I perform these operations via REST with the WildFly HTTP management API? Ideally, I would use a Java API if there was one.
With the org.wildfly.core:wildfly-controller-client API you could do something like this:
try (ModelControllerClient client = ModelControllerClient.Factory.create("localhost", 9990)) {
final ModelNode address = Operations.createAddress("system-property", "test.property");
ModelNode op = Operations.createRemoveOperation(address);
ModelNode result = client.execute(op);
if (!Operations.isSuccessfulOutcome(result)) {
throw new RuntimeException("Failed to remove property: " + Operations.getFailureDescription(result).asString());
}
op = Operations.createAddOperation(address);
op.get("value").set("test-value");
result = client.execute(op);
if (!Operations.isSuccessfulOutcome(result)) {
throw new RuntimeException("Failed to add property: " + Operations.getFailureDescription(result).asString());
}
}
You can use the REST API too, however you'll need to have a way to do digest authentication.
Client client = null;
try {
final JsonObject json = Json.createObjectBuilder()
.add("address", Json.createArrayBuilder()
.add("system-property")
.add("test.property.2"))
.add("operation", "add")
.add("value", "test-value")
.build();
client = ClientBuilder.newClient();
final Response response = client.target("http://localhost:9990/management/")
.request()
.header(HttpHeaders.AUTHORIZATION, "Digest <settings>")
.post(Entity.json(json));
System.out.println(response.getStatusInfo());
} finally {
if (client != null) client.close();
}
I'm making a client-server application that sends a matrix to a server, where its determinant is computed and then sent back to the client. I've made this wrapper class:
public class MatrixDTO { // with getters and setters
private double[][] matrix;
private double determinant;
}
And I've also implemented the server logic for obtaining the determinant from the MatrixDTO object.
I've added this RestController in the server:
#RestController
public class MatrixController {
#RequestMapping(value = "/", method = RequestMethod.POST)
public MatrixDTO postMapping(#RequestParam MatrixDTO matrixDTO) {
// code to compute determinant ommitted
matrixDTO.setDeterminant(determinant);
return matrixDTO;
}
Then in the client I've added this method of sending the request:
final String uri = "http://localhost:8080/?matrixDTO={matrixDTOparam}";
// initialized wrapper object only with matrix data
MatrixDTO input = new MatrixDTO(data);
Map<String, MatrixDTO> params = new HashMap<>();
params.put("matrixDTOparam", input);
RestTemplate restTemplate = new RestTemplate();
result = restTemplate.postForObject(uri, input, MatrixDTO.class, params);
// now I should be able to extract the determinant with result.getDeterminant()
Many hours were lost trying to get this simple code to work. The error is:
Failed to convert value of type 'java.lang.String' to required type 'MatrixDTO';
nested exception is java.lang.IllegalStateException: Cannot convert value of type 'java.lang.String' to required type 'MatrixDTO':
no matching editors or conversion strategy found]
My question is the following: should I choose another approach for my problem, and if not, is there an easy way to make the code work? I'm looking for a simple implementation and not a lot of configuration to be done. Thanks.
So far, my error seems to be using #RequestParam instead of #RequestBody in the controller.
By changing that and using this code in the client:
final String uri = "http://localhost:8080/";
MatrixDTO input = new MatrixDTO(data);
RestTemplate restTemplate = new RestTemplate();
result = restTemplate.postForObject(uri, input, MatrixDTO.class);
it appears to work well enough.
When Twilio invokes a callback method to fetch the TwiML <Say> for Voice, I see that Twilio sets "x-twilio-signature" in the HTTP header.
I need to verify that the actual request came from Twilio.
I have a simple war file running on Tomcat and the app is built using Spring.
I did something like the following:
//Get the TwilioUtils object initialized
TwilioUtils twilioUtils = new TwilioUtils("******myAuthToken");
//Get the URL from HttpRequest
String url = httpRequest.getRequestURL().toString();
Map<String, String> allRequestParams = getAllRequestParams(httpRequest);
Map<String, String> headers = getAllRequestHeaders(httpRequest);
//Get the signature generated for the Url and request parameters
//allRequestParams is a map of all request values posted to my service by Twilio
String validSig = twilioUtils.getValidationSignature(url, allRequestParams);
//Get the x-twilio-signature value from the http header map
String xTwilioSignature = headers.get("x-twilio-signature”);
//This is different from what I get below
logger.info("validSig = " + validSig);
logger.info("xTwilioSignature = " + xTwilioSignature );
//This is always false
logger.info("Signature matched : " + twilioUtils.validateRequest(xTwilioSignature, url,
allRequestParams));
I would like to know what am I doing wrong. Is my approach to validate "x-twilio-signature" incorrect?
If it is incorrect, what's the right way to do it?
I am using the helper library class TwilioUtils provided by Twilio to validate it.
All the time the signature from Twilio is different from what I get from the TwilioUtils object.
Megan from Twilio here.
Are you following the steps suggested in the security documentation?
validateRequest expects three arguments. I believe you're missing the url there.
Consider this example:
public class TwilioUtilsExample {
public static void main(String[] args) {
// Account details
String accountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
String authToken = "YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY";
//This is the signature we expect
String expected_sig = "SSSSSSSSSSSSSSSSSSSSSSSSSSSS";
//This is the url that twilio requested
String url = "http://UUUUUUUUUUUUUUU";
//These are the post params twilio sent in its request
Map<String,String> params = new HashMap<String,String>();
// Be sure to see the signing notes at twilio.com/docs/security
TwilioUtils util = new TwilioUtils(authToken, accountSid);
boolean result = util.validateRequest(expected_sig, url, params);
if (result) {
System.out.print( "The signature is valid!\n" );
} else {
System.out.print( "The signature was NOT VALID. It might have been spoofed!\n" );
}
}
}
Hope this is helpful!
I'm looking to leverage RackSpace's CloudFiles platform for large object storage (word docs, images, etc). Following some of their guides, I found a useful code snippet, that looks like it should work, but doesn't in my case.
Iterable<Module> modules = ImmutableSet.<Module> of(
new Log4JLoggingModule());
Properties properties = new Properties();
properties.setProperty(LocationConstants.PROPERTY_ZONE, ZONE);
properties.setProperty(LocationConstants.PROPERTY_REGION, "ORD");
CloudFilesClient cloudFilesClient = ContextBuilder.newBuilder(PROVIDER)
.credentials(username, apiKey)
.overrides(properties)
.modules(modules)
.buildApi(CloudFilesClient.class);
The problem is that when this code executes, it tries to log me in the IAD (Virginia) instance of CloudFiles. My organization's goal is to use the ORD (Chicago) instance as primary to be colocated with our cloud and use DFW as a back up environment. The login response results in the IAD instance coming back first, so I'm assuming JClouds is using that. Browsing around, it looks like the ZONE/REGION attributes are ignored for CloudFiles. I was wondering if there is any way to override the code that comes back for authentication to loop through the returned providers and choose which one to login to.
Update:
The accepted answer is mostly good, with some more info available in this snippet:
RestContext<CommonSwiftClient, CommonSwiftAsyncClient> swift = cloudFilesClient.unwrap();
CommonSwiftClient client = swift.getApi();
SwiftObject object = client.newSwiftObject();
object.getInfo().setName(FILENAME + SUFFIX);
object.setPayload("This is my payload."); //input stream.
String id = client.putObject(CONTAINER, object);
System.out.println(id);
SwiftObject obj2 = client.getObject(CONTAINER,FILENAME + SUFFIX);
System.out.println(obj2.getPayload());
We are working on the next version of jclouds (1.7.1) that should include multi-region support for Rackspace Cloud Files and OpenStack Swift. In the meantime you might be able to use this code as a workaround.
private void uploadToRackspaceRegion() {
Iterable<Module> modules = ImmutableSet.<Module> of(new Log4JLoggingModule());
String provider = "swift-keystone"; //Region selection is limited to swift-keystone provider
String identity = "username";
String credential = "password";
String endpoint = "https://identity.api.rackspacecloud.com/v2.0/";
String region = "ORD";
Properties overrides = new Properties();
overrides.setProperty(LocationConstants.PROPERTY_REGION, region);
overrides.setProperty(Constants.PROPERTY_API_VERSION, "2");
BlobStoreContext context = ContextBuilder.newBuilder(provider)
.endpoint(endpoint)
.credentials(identity, credential)
.modules(modules)
.overrides(overrides)
.buildView(BlobStoreContext.class);
RestContext<CommonSwiftClient, CommonSwiftAsyncClient> swift = context.unwrap();
CommonSwiftClient client = swift.getApi();
SwiftObject uploadObject = client.newSwiftObject();
uploadObject.getInfo().setName("test.txt");
uploadObject.setPayload("This is my payload."); //input stream.
String eTag = client.putObject("jclouds", uploadObject);
System.out.println("eTag = " + eTag);
SwiftObject downloadObject = client.getObject("jclouds", "test.txt");
System.out.println("downloadObject = " + downloadObject.getPayload());
context.close();
}
Use swift as you would Cloud Files. Keep in mind that if you need to use Cloud Files CDN stuff, the above won't work for that. Also, know that this way of doing things will eventually be deprecated.
I'm trying to URIENcode a string in java using URIUtils of spring framework.
it supposed to be simple as far as I understood but for some reason the string stays unchanged.
I have the following string:
http://www.foo.bar/foo/bar
and I want to URIEncode it.
final String ENC = "UTF-8";
String uri = "http://www.foo.bar/foo/bar";
final String result = UriUtils.encodeFragment(uri, ENC);
the result is the same string not encoded.
what am I doing wrong?
how can I properly URIEncode that string in order to use it in get parameters ?
I don't want to use a URLBuilder because i need to use the resulted output and create a hash table for an internal database.
thank you
I think you can achieve the same using java.net.URLEncoder, avoiding the spring class
System.out.println(URLEncoder.encode("http://www.foo.bar/foo/bar", "UTF-8"))
would print
http%3A%2F%2Fwww.foo.bar%2Ffoo%2Fbar
There is an RFC which allows URI building from different parameters: URI templates.
Since you use Java, there happens to be an implementation available (disclaimer: yes it's mine).
You could then do like this:
// The template
final URITemplate tmpl = new URITemplate("http://my.site/foo{?params*}");
// The query parameters
// Uses Maps from Guava since the lib depends on it
final Map<String, String> params = Maps.newHashMap();
params.put("site", "http://www.foo.bar/foo/bar");
// The template data expansion
final Map<String, VariableValue> data = Maps.newHashMap();
data.put("params", new MapValue(params));
// Expand, build the URL
// The expansion takes care of all the encoding for you
final URL url = new URL(template.expand(data));