services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.epam.datalab.backendapi.resources;

import com.epam.datalab.auth.UserInfo;
import com.epam.datalab.backendapi.core.response.folderlistener.FolderListener;
import com.epam.datalab.backendapi.core.response.folderlistener.WatchItem;
import com.epam.datalab.backendapi.core.response.folderlistener.WatchItemList;
import com.epam.datalab.properties.ChangePropertiesConst;
import com.epam.datalab.properties.ChangePropertiesService;
import com.epam.datalab.properties.RestartForm;
import com.epam.datalab.properties.YmlDTO;
import io.dropwizard.auth.Auth;
import lombok.extern.slf4j.Slf4j;

import javax.inject.Inject;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.function.Predicate;

import static com.epam.datalab.backendapi.core.response.folderlistener.WatchItem.ItemStatus.INPROGRESS;
import static com.epam.datalab.backendapi.core.response.folderlistener.WatchItem.ItemStatus.WAIT_FOR_FILE;

@Path("/config")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
@Slf4j
public class ChangePropertiesResource implements ChangePropertiesConst {

    private final ChangePropertiesService changePropertiesService;
    private final List<WatchItem.ItemStatus> inProgressStatuses = Arrays.asList(INPROGRESS, WAIT_FOR_FILE);

    @Inject
    public ChangePropertiesResource(ChangePropertiesService changePropertiesService) {
        this.changePropertiesService = changePropertiesService;
    }

    @GET
    @Path("/provisioning-service")
    public Response getProvisioningServiceProperties(@Auth UserInfo userInfo) {
        return Response
                .ok(changePropertiesService.readFileAsString(PROVISIONING_SERVICE_PROP_PATH, PROVISIONING_SERVICE))
                .build();
    }

    @GET
    @Path("/billing")
    public Response getBillingServiceProperties(@Auth UserInfo userInfo) {
        return Response
                .ok(changePropertiesService.readFileAsString(BILLING_SERVICE_PROP_PATH, BILLING_SERVICE))
                .build();
    }

    @POST
    @Path("/provisioning-service")
    public Response overwriteProvisioningServiceProperties(@Auth UserInfo userInfo, YmlDTO ymlDTO) {
        changePropertiesService.writeFileFromString(ymlDTO.getYmlString(), PROVISIONING_SERVICE, PROVISIONING_SERVICE_PROP_PATH);
        return Response.ok().build();
    }

    @POST
    @Path("/billing")
    public Response overwriteBillingServiceProperties(@Auth UserInfo userInfo, YmlDTO ymlDTO) {
        changePropertiesService.writeFileFromString(ymlDTO.getYmlString(), BILLING_SERVICE, BILLING_SERVICE_PROP_PATH);
        return Response.ok().build();
    }

    @POST
    @Path("/restart")
    public Response restart(@Auth UserInfo userInfo, RestartForm restartForm) {
//        checkResponseFiles(restartForm);
        changePropertiesService.restart(restartForm);
        return Response.ok().build();
    }

    private void checkResponseFiles(RestartForm restartForm) {
        List<WatchItem> watchItems = new ArrayList<>();
        //or check getFileHandlerCallback().getId()/uuid

        FolderListener.getListeners().get(0).getItemList().get(0).getFileHandlerCallback().getUUID();
        FolderListener.getListeners().stream()
                .map(FolderListener::getItemList)
                .forEach(
                        x -> {
                            for (int i = 0; i < x.size(); i++) {
                                log.info("TEST LOG!!!" +
                                                "watchItem:{}, fileHandlerCallBack: {}, uuid: {}",
                                        x.get(i), x.get(i).getFileHandlerCallback(),
                                        x.get(i).getFileHandlerCallback().getId());
                            }
                        }
                );

        boolean isNoneFinishedRequests = FolderListener.getListeners().stream()
                .filter(FolderListener::isAlive)
                .filter(FolderListener::isListen)
                .map(FolderListener::getItemList)
                .anyMatch(findAnyInStatus(watchItems, inProgressStatuses));
        if (isNoneFinishedRequests) {
            log.info("Found unchecked response file from docker : {}." +
                    " Provisioning restart is denied", watchItems);
            restartForm.setProvserv(false);
        }

    }

    private Predicate<WatchItemList> findAnyInStatus(List<WatchItem> watchItems,
                                                     List<WatchItem.ItemStatus> statuses) {
        log.info("TEST LOG!!!" +
                "watchItems:{}, statuses to find: {}", watchItems, statuses);
        return watchItemList -> {
            for (int i = 0; i < watchItemList.size(); i++) {
                if (statuses.contains(watchItemList.get(i).getStatus())) {
                    log.info("TEST LOG!!!" +
                            "watchItem:{}, status: {}", watchItemList.get(i), watchItemList.get(i).getStatus());
                    watchItems.add(watchItemList.get(i));
                }
            }
            return !watchItems.isEmpty();
        };
    }
}