ErrorDescriptorsRoute.java

package restx.exceptions;

import com.fasterxml.jackson.databind.ObjectWriter;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import restx.RestxRequest;
import restx.RestxRequestMatch;
import restx.endpoint.Endpoint;
import restx.endpoint.EndpointParameterMapperRegistry;
import restx.admin.AdminModule;
import restx.factory.Component;
import restx.jackson.FrontObjectMapperFactory;
import restx.jackson.StdJsonProducerEntityRoute;
import restx.security.PermissionFactory;
import restx.security.RestxSecurityManager;

import javax.inject.Named;
import java.io.IOException;
import java.util.Map;

/**
 * User: xavierhanin
 * Date: 3/18/13
 * Time: 9:37 PM
 */
@Component
public class ErrorDescriptorsRoute extends StdJsonProducerEntityRoute {

    private final ImmutableMap<String, ErrorDescriptor> errorDescriptors;
    private final RestxSecurityManager securityManager;
    private PermissionFactory permissionFactory;

    public ErrorDescriptorsRoute(Iterable<ErrorDescriptor> errorDescriptors,
                                 @Named(FrontObjectMapperFactory.WRITER_NAME) ObjectWriter objectWriter,
                                 RestxSecurityManager securityManager,
                                 PermissionFactory permissionFactory,
                                 EndpointParameterMapperRegistry registry
    ) {
        super("ErrorDescriptorsRoute", ImmutableCollection.class, objectWriter, Endpoint.of("GET", "/@/errors/descriptors"), permissionFactory, registry);
        Map<String, ErrorDescriptor> map = Maps.newLinkedHashMap();
        for (ErrorDescriptor errorDescriptor : errorDescriptors) {
            if (map.containsKey(errorDescriptor.getErrorCode())) {
                throw new IllegalStateException("duplicate error code found: " + errorDescriptor.getErrorCode());
            }
            map.put(errorDescriptor.getErrorCode(), errorDescriptor);
        }
        this.errorDescriptors = ImmutableMap.copyOf(map);
        this.securityManager = securityManager;
    }

    @Override
    protected Optional<?> doRoute(RestxRequest restxRequest, RestxRequestMatch match, Object i) throws IOException {
        securityManager.check(restxRequest, match, permissionFactory.hasRole(AdminModule.RESTX_ADMIN_ROLE));
        return Optional.of(errorDescriptors.values());
    }
}