services/provisioning-service/src/test/java/com/epam/datalab/backendapi/core/DockerWarmuperTest.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
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package com.epam.datalab.backendapi.core;

import com.epam.datalab.backendapi.ProvisioningServiceApplicationConfiguration;
import com.epam.datalab.backendapi.core.commands.ICommandExecutor;
import com.epam.datalab.backendapi.core.response.folderlistener.FolderListenerExecutor;
import com.epam.datalab.backendapi.core.response.handlers.dao.CallbackHandlerDao;
import com.epam.datalab.dto.imagemetadata.ComputationalMetadataDTO;
import com.epam.datalab.dto.imagemetadata.ComputationalResourceShapeDto;
import com.epam.datalab.dto.imagemetadata.ExploratoryMetadataDTO;
import com.epam.datalab.dto.imagemetadata.ImageMetadataDTO;
import com.epam.datalab.dto.imagemetadata.ImageType;
import com.epam.datalab.process.model.ProcessInfo;
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Injector;
import io.dropwizard.util.Duration;
import org.junit.Before;
import org.junit.Test;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import static junit.framework.TestCase.assertEquals;
import static org.mockito.Matchers.anyString;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

public class DockerWarmuperTest {
	@Inject
	private DockerWarmuper warmuper;
	private ExploratoryMetadataDTO exploratoryMetadata = new ExploratoryMetadataDTO(
			"executeResult");
	private ComputationalMetadataDTO computationalMetadata = new
			ComputationalMetadataDTO("executeResult");
	private static final String EXPLORATORY_TEST_JSON = "{\"exploratory_environment_shapes\" : { \"Category\" : [ " +
			"{\"Size\":\"L\", \"Type\":\"cg1.4xlarge\",\"Ram\": \"22.5 GB\",\"Cpu\": \"16\"}]}}";
	private static final String COMPUTATIONAL_TEST_JSON = "{\"template_name\":\"EMR cluster\"}";

	@Before
	public void setup() {
		createInjector().injectMembers(this);
		ComputationalResourceShapeDto computationalResourceShapeDto = new ComputationalResourceShapeDto();
		computationalResourceShapeDto.setSize("L");
		computationalResourceShapeDto.setType("cg1.4xlarge");
		computationalResourceShapeDto.setRam("22.5 GB");
		computationalResourceShapeDto.setCpu(16);
		List<ComputationalResourceShapeDto> metadataArray = new ArrayList<>();
		metadataArray.add(computationalResourceShapeDto);
		HashMap<String, List<ComputationalResourceShapeDto>> map = new HashMap<>();
		map.put("Category", metadataArray);
		exploratoryMetadata.setExploratoryEnvironmentShapes(map);
		computationalMetadata.setTemplateName("EMR cluster");
	}

	@Test
	public void warmupSuccess() throws Exception {
		warmuper.start();
		warmuper.getFileHandlerCallback(getFirstUUID())
				.handle(getFileName(), EXPLORATORY_TEST_JSON.getBytes());
		warmuper.getFileHandlerCallback(getFirstUUID())
				.handle(getFileName(), COMPUTATIONAL_TEST_JSON.getBytes());

		ImageMetadataDTO testExploratory = warmuper.getMetadata(ImageType.EXPLORATORY)
				.toArray(new ImageMetadataDTO[1])[0];
		testExploratory.setImage("executeResult");
		assertEquals(exploratoryMetadata.getImageType(), testExploratory.getImageType());

		ImageMetadataDTO testComputational = warmuper.getMetadata(ImageType.COMPUTATIONAL)
				.toArray(new ImageMetadataDTO[1])[0];
		testComputational.setImage("executeResult");
		assertEquals(computationalMetadata.getImageType(), testComputational.getImageType());
	}

	private String getFirstUUID() {
		return warmuper.getUuids().keySet().toArray(new String[1])[0];
	}

	private String getFileName() {
		return getFirstUUID() + ".json";
	}

	private Injector createInjector() {
		return Guice.createInjector(new AbstractModule() {
			@Override
			protected void configure() {
				bind(FolderListenerExecutor.class).toInstance(mock(FolderListenerExecutor.class));
				bind(ProvisioningServiceApplicationConfiguration.class).toInstance(createConfiguration());
				bind(ICommandExecutor.class).toInstance(createCommandExecutor());
				bind(CallbackHandlerDao.class).toInstance(mock(CallbackHandlerDao.class));
			}
		});
	}

	private ProvisioningServiceApplicationConfiguration createConfiguration() {
		ProvisioningServiceApplicationConfiguration result = mock(ProvisioningServiceApplicationConfiguration.class);
		when(result.getWarmupDirectory()).thenReturn("/tmp");
		when(result.getWarmupPollTimeout()).thenReturn(Duration.seconds(3));
		return result;
	}

	private ICommandExecutor createCommandExecutor() {
		ICommandExecutor result = mock(ICommandExecutor.class);
		try {
			final ProcessInfo pi = mock(ProcessInfo.class);
			when(pi.getStdOut()).thenReturn("executeResult");
			when(result.executeSync(anyString(), anyString(), anyString())).thenReturn(pi);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}
}