/*
* Copyright (c) 2014.
*
* BaasBox - info@baasbox.com
*
* 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 com.baasbox.commands;
import com.baasbox.commands.exceptions.CommandException;
import com.baasbox.commands.exceptions.CommandParsingException;
import com.baasbox.commands.exceptions.ResourceNotFoundException;
import com.baasbox.service.scripting.base.JsonCallback;
import com.baasbox.service.scripting.js.Json;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.NullNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
import com.google.common.collect.ImmutableMap;
import java.util.Map;
/**
* Created by Andrea Tortorella on 30/06/14.
*/
public class CommandRegistry {
//todo this will grow
// we should use something like annotations
// to define what is a resource and a command
// and register it in the command registry.
// this code would run anyway at most once.
private static final Map<String,Resource> RESOURCES =
ImmutableMap.<String,Resource>builder()
.put(DocumentsResource.INSTANCE.name(), DocumentsResource.INSTANCE)
.put(ScriptsResource.INSTANCE.name(), ScriptsResource.INSTANCE)
.put(UsersResource.INSTANCE.name(), UsersResource.INSTANCE)
.put(CollectionsResource.INSTANCE.name(), CollectionsResource.INSTANCE)
.put(PushResource.INSTANCE.name(), PushResource.INSTANCE)
.put(DBResource.INSTANCE.name(),DBResource.INSTANCE)
.build();
public static JsonNode execute(JsonNode request, JsonCallback callback) throws CommandException {
if (request == null) throw new CommandParsingException(NullNode.getInstance(),"command is null");
JsonNode resourceNode = request.get(ScriptCommand.RESOURCE);
if (resourceNode != null && resourceNode.isTextual()) {
String name = resourceNode.textValue();
if (name == null|| name.length()==0){
throw new CommandParsingException(request,"Resource name cannot be empty");
}
Resource resource = RESOURCES.get(name);
if (resource == null){
throw new ResourceNotFoundException(request,"Resource not found");
}
JsonNode response = resource.execute(request,callback);
return response;
} else {
throw new CommandParsingException(request,"Missing resource name");
}
}
}