88 lines
2.6 KiB
Markdown
88 lines
2.6 KiB
Markdown
# gxREST
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The gCube eXtensions to the Rest Protocol (gxRest) is a set of Java libraries designed to provide convenient round-trip interaction between a Restful web application (also known as "service") and its clients.
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gxRest has the flexibility for different degrees of exploitation:
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* it can be entirely adopted both at client and service side with full benefit of its conventions;
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* it can be used to send REST requests based only on plain HTTP;
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* it can be used only to return HTTP code/messagess from the service;
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* it can be used only to throw Exceptions from the service to the client.
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## Examples of use
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Sending a request:
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```java
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GXHTTPRequest request = GXHTTPRequest.newRequest("http://host:port/service/").from("GXRequestTest");
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//prepare some parameters
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String context ="...";
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Map<String,String> queryParams = new WeakHashMap<>();
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queryParams.put("param name", "param value");
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GXInboundResponse response = request.path("context")
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.queryParams(queryParams).withBody(context).post();
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```
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Returning a success response:
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```java
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@POST
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public Response create(...) {
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//Resource successfully created
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URI location = ... //URI of the new resource
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return GXOutboundSuccessResponse.newCREATEResponse(location)
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.withMessage("Resource successfully created.")
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.ofType(MediaType.APPLICATION_JSON)
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.build();
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}
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```
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Throwing an exception:
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```java
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@POST
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public Response create(...) {
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//Oh no, something failed here
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GXOutboundErrorResponse.throwException(new MyCustomException("Resource already exists."));
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}
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```
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Parsing a response
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```java
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// invoke the remote method and get a response.
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GXInboundResponse response = ...;
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if (response.hasException())
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throw response.getException();
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//assuming a created (200) code was expected
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if (response.hasCREATEDCode()) {
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System.out.println("Resource successfully created!");
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}
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//access content as string
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String value = response.getStreamedContentAsString();
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//unmasharll content as json
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Context returnedContext = response.tryConvertStreamedContentFromJson(Context.class);
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```
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## Modules
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* [gxHTTP](https://wiki.gcube-system.org/gcube/GxRest/GxHTTP)
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* [gxJRS](https://wiki.gcube-system.org/gcube/GxRest/GxJRS)
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## Deployment
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Notes about how to deploy this component on an infrastructure or link to wiki doc (if any).
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## Documentation
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See gxRest on [Wiki](https://wiki.gcube-system.org/gcube/GxRest).
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## Built With
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* [JAX-RS](https://github.com/eclipse-ee4j/jaxrs-api) - Java™ API for RESTful Web Services
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* [Jersey](https://jersey.github.io/) - JAX-RS runtime
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* [Maven](https://maven.apache.org/) - Dependency Management
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## License
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TBP |