import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
+import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import java.time.Duration;
+import java.util.ArrayList;
import java.util.Collection;
-import java.util.Vector;
import org.oransc.policyagent.exceptions.ServiceException;
import org.oransc.policyagent.repository.Policies;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
+@Api(tags = "Service registry and supervision")
public class ServiceController {
private final Services services;
private final Policies policies;
private static Gson gson = new GsonBuilder() //
- .serializeNulls() //
.create(); //
@Autowired
}
@GetMapping("/services")
- @ApiOperation(value = "Returns service information", response = ServiceStatus.class)
- @ApiResponses(value = {@ApiResponse(code = 200, message = "OK")})
- public ResponseEntity<String> getServices( //
+ @ApiOperation(value = "Returns service information")
+ @ApiResponses(
+ value = { //
+ @ApiResponse(code = 200, message = "OK", response = ServiceStatus.class, responseContainer = "List"), //
+ @ApiResponse(code = 404, message = "Service is not found", response = String.class)})
+ public ResponseEntity<String> getServices(//
@RequestParam(name = "name", required = false) String name) {
- Collection<ServiceStatus> servicesStatus = new Vector<>();
- synchronized (this.services) {
- for (Service s : this.services.getAll()) {
- if (name == null || name.equals(s.name())) {
- servicesStatus.add(toServiceStatus(s));
- }
+ if (name != null && this.services.get(name) == null) {
+ return new ResponseEntity<>("Service not found", HttpStatus.NOT_FOUND);
+ }
+
+ Collection<ServiceStatus> servicesStatus = new ArrayList<>();
+ for (Service s : this.services.getAll()) {
+ if (name == null || name.equals(s.getName())) {
+ servicesStatus.add(toServiceStatus(s));
}
}
String res = gson.toJson(servicesStatus);
- return new ResponseEntity<String>(res, HttpStatus.OK);
+ return new ResponseEntity<>(res, HttpStatus.OK);
}
private ServiceStatus toServiceStatus(Service s) {
- return ImmutableServiceStatus.builder() //
- .name(s.name()) //
- .keepAliveInterval(s.getKeepAliveInterval().toSeconds()) //
- .timeSincePing(s.timeSinceLastPing().toSeconds()) //
- .build();
+ return new ServiceStatus(s.getName(), s.getKeepAliveInterval().toSeconds(), s.timeSinceLastPing().toSeconds(),
+ s.getCallbackUrl());
+ }
+
+ private void validateRegistrationInfo(ServiceRegistrationInfo registrationInfo) throws ServiceException {
+ if (registrationInfo.serviceName.isEmpty()) {
+ throw new ServiceException("Missing mandatory parameter 'serviceName'");
+ }
+ if (registrationInfo.keepAliveIntervalSeconds < 0) {
+ throw new ServiceException("Keepalive interval shoul be greater or equal to 0");
+ }
}
+ @ApiOperation(value = "Register a service")
+ @ApiResponses(
+ value = { //
+ @ApiResponse(code = 200, message = "Service updated", response = String.class),
+ @ApiResponse(code = 201, message = "Service created", response = String.class), //
+ @ApiResponse(code = 400, message = "The ServiceRegistrationInfo is not accepted", response = String.class)})
@PutMapping("/service")
- public ResponseEntity<String> putService( //
- @RequestBody String jsonBody) {
+ public ResponseEntity<String> putService(//
+ @RequestBody ServiceRegistrationInfo registrationInfo) {
try {
- ServiceRegistrationInfo s = gson.fromJson(jsonBody, ImmutableServiceRegistrationInfo.class);
- this.services.put(toService(s));
- return new ResponseEntity<String>("OK", HttpStatus.OK);
+ validateRegistrationInfo(registrationInfo);
+ final boolean isCreate = this.services.get(registrationInfo.serviceName) == null;
+ this.services.put(toService(registrationInfo));
+ return new ResponseEntity<>("OK", isCreate ? HttpStatus.CREATED : HttpStatus.OK);
} catch (Exception e) {
- return new ResponseEntity<String>(e.getMessage(), HttpStatus.NO_CONTENT);
+ return new ResponseEntity<>(e.getMessage(), HttpStatus.BAD_REQUEST);
}
}
+ @ApiOperation(value = "Delete a service")
+ @ApiResponses(
+ value = { //
+ @ApiResponse(code = 204, message = "OK"),
+ @ApiResponse(code = 404, message = "Service not found", response = String.class)})
@DeleteMapping("/services")
- public ResponseEntity<String> deleteService( //
- @RequestParam(name = "name", required = true) String name) {
+ public ResponseEntity<String> deleteService(//
+ @RequestParam(name = "name", required = true) String serviceName) {
try {
- Service service = removeService(name);
+ Service service = removeService(serviceName);
// Remove the policies from the repo and let the consistency monitoring
// do the rest.
removePolicies(service);
- return new ResponseEntity<String>("OK", HttpStatus.NO_CONTENT);
+ return new ResponseEntity<>("OK", HttpStatus.NO_CONTENT);
} catch (Exception e) {
- return new ResponseEntity<String>(e.getMessage(), HttpStatus.NO_CONTENT);
+ return new ResponseEntity<>(e.getMessage(), HttpStatus.NOT_FOUND);
}
}
- private Service removeService(String name) throws ServiceException {
- synchronized (this.services) {
- Service service = this.services.getService(name);
- this.services.remove(service.name());
- return service;
+ @ApiOperation(value = "Heartbeat from a serice")
+ @ApiResponses(
+ value = { //
+ @ApiResponse(code = 200, message = "Service supervision timer refreshed, OK"),
+ @ApiResponse(code = 404, message = "The service is not found, needs re-registration")})
+ @PostMapping("/services/keepalive")
+ public ResponseEntity<String> keepAliveService(//
+ @RequestParam(name = "name", required = true) String serviceName) {
+ try {
+ services.getService(serviceName).keepAlive();
+ return new ResponseEntity<>("OK", HttpStatus.OK);
+ } catch (ServiceException e) {
+ return new ResponseEntity<>(e.getMessage(), HttpStatus.NOT_FOUND);
}
}
+ private Service removeService(String name) throws ServiceException {
+ Service service = this.services.getService(name); // Just to verify that it exists
+ this.services.remove(service.getName());
+ return service;
+ }
+
private void removePolicies(Service service) {
- synchronized (this.policies) {
- Vector<Policy> policyList = new Vector<>(this.policies.getForService(service.name()));
- for (Policy policy : policyList) {
- this.policies.remove(policy);
- }
+ Collection<Policy> policyList = this.policies.getForService(service.getName());
+ for (Policy policy : policyList) {
+ this.policies.remove(policy);
}
}
private Service toService(ServiceRegistrationInfo s) {
- return new Service(s.name(), Duration.ofSeconds(s.keepAliveInterval()), s.callbackUrl());
+ return new Service(s.serviceName, Duration.ofSeconds(s.keepAliveIntervalSeconds), s.callbackUrl);
}
}
Code Review / nonrtric.git / blobdiff