org.dashbuilder.displayer.client.component.function.BackendFunctionLoader Maven / Gradle / Ivy

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/*
 * Copyright 2020 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.dashbuilder.displayer.client.component.function;

import java.util.List;
import java.util.Map;
import java.util.function.Consumer;

import javax.annotation.PostConstruct;
import javax.inject.Inject;

import org.dashbuilder.displayer.external.ExternalComponentFunction;
import org.dashbuilder.external.service.BackendComponentFunctionService;
import org.jboss.errai.common.client.api.Caller;
import org.jboss.errai.ioc.client.api.EntryPoint;

/**
 * Generated wrapped client functions to proxy the call using BackendFunctionLoaderService.
 *
 */
@EntryPoint
public class BackendFunctionLoader {

    private static final String UNKNOWN_BACKEND_ERROR = "Unknown backend error.";

    @Inject
    ComponentFunctionLocator componentFunctionLocator;

    @Inject
    Caller backendFunctionLoaderService;

    @PostConstruct
    public void loadBackendFunctions() {
        backendFunctionLoaderService.call((List result) -> this.registerFunctions(result)).listFunctions();
    }

    private void registerFunctions(List result) {
        result.forEach(name -> componentFunctionLocator.registerFunction(new ExternalComponentFunction() {

            @Override
            public String getName() {
                return name;
            }

            @Override
            public void exec(Map params, Consumer