io.atomix.rest.resources.AtomicValueResource Maven / Gradle / Ivy
/*
* Copyright 2017-present Open Networking Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.atomix.rest.resources;
import io.atomix.core.value.AsyncAtomicValue;
import io.atomix.core.value.AtomicValueConfig;
import io.atomix.core.value.AtomicValueType;
import io.atomix.rest.AtomixResource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.container.AsyncResponse;
import javax.ws.rs.container.Suspended;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
/**
* Atomic value resource.
*/
@AtomixResource
@Path("/atomic-value")
public class AtomicValueResource extends PrimitiveResource, AtomicValueConfig> {
private static final Logger LOGGER = LoggerFactory.getLogger(AtomicValueResource.class);
public AtomicValueResource() {
super(AtomicValueType.instance());
}
@GET
@Path("/{name}/value")
@Produces(MediaType.APPLICATION_JSON)
public void get(
@PathParam("name") String name,
@Suspended AsyncResponse response) {
getPrimitive(name).thenCompose(value -> value.get()).whenComplete((result, error) -> {
if (error == null) {
response.resume(Response.ok(result).build());
} else {
LOGGER.warn("{}", error);
response.resume(Response.serverError().build());
}
});
}
@POST
@Path("/{name}/value")
@Consumes(MediaType.TEXT_PLAIN)
public void set(
@PathParam("name") String name,
String body,
@Suspended AsyncResponse response) {
getPrimitive(name).thenCompose(value -> value.set(body)).whenComplete((result, error) -> {
if (error == null) {
response.resume(Response.ok().build());
} else {
LOGGER.warn("{}", error);
response.resume(Response.serverError().build());
}
});
}
@POST
@Path("/{name}/cas")
@Produces(MediaType.APPLICATION_JSON)
public void compareAndSet(
@PathParam("name") String name,
CompareAndSetRequest request,
@Suspended AsyncResponse response) {
getPrimitive(name).thenCompose(value -> value.compareAndSet(request.getExpect(), request.getUpdate())).whenComplete((result, error) -> {
if (error == null) {
response.resume(Response.ok(result).build());
} else {
LOGGER.warn("{}", error);
response.resume(Response.serverError().build());
}
});
}
/**
* Compare and set request.
*/
static class CompareAndSetRequest {
private String expect;
private String update;
public String getExpect() {
return expect;
}
public void setExpect(String expect) {
this.expect = expect;
}
public String getUpdate() {
return update;
}
public void setUpdate(String update) {
this.update = update;
}
}
}