D-Net

package eu.dnetlib.functionality.modular.ui.workflows.controllers;

import java.awt.image.BufferedImage;

import java.io.IOException;

import java.io.OutputStream;

import java.io.StringReader;

import java.util.Collection;

import java.util.Collections;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Set;

import javax.annotation.Resource;

import javax.imageio.ImageIO;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.math.NumberUtils;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.dom4j.Document;

import org.dom4j.Element;

import org.dom4j.io.SAXReader;

import org.joda.time.DateTime;

import org.joda.time.format.DateTimeFormat;

import org.joda.time.format.DateTimeFormatter;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.ResponseBody;

import com.google.common.base.Function;

import com.google.common.collect.Iterators;

import com.google.common.collect.Lists;

import com.google.common.collect.Maps;

import com.google.gson.Gson;

import com.google.gson.reflect.TypeToken;

import com.googlecode.sarasvati.GraphProcess;

import com.googlecode.sarasvati.Node;

import com.googlecode.sarasvati.NodeToken;

import com.googlecode.sarasvati.ProcessState;

import eu.dnetlib.common.logging.DnetLogger;

import eu.dnetlib.common.logging.LogMessage;

import eu.dnetlib.enabling.is.lookup.rmi.ISLookUpException;

import eu.dnetlib.functionality.modular.ui.AbstractAjaxController;

import eu.dnetlib.functionality.modular.ui.workflows.objects.AdvancedMetaWorkflowDescriptor;

import eu.dnetlib.functionality.modular.ui.workflows.objects.AtomicWorkflowDescriptor;

import eu.dnetlib.functionality.modular.ui.workflows.objects.MetaWorkflowDescriptor;

import eu.dnetlib.functionality.modular.ui.workflows.objects.NodeInfo;

import eu.dnetlib.functionality.modular.ui.workflows.objects.NodeTokenInfo;

import eu.dnetlib.functionality.modular.ui.workflows.objects.NodeWithUserParams;

import eu.dnetlib.functionality.modular.ui.workflows.objects.ProcessListEntry;

import eu.dnetlib.functionality.modular.ui.workflows.objects.sections.WorkflowSectionGrouper;

import eu.dnetlib.functionality.modular.ui.workflows.sarasvati.viewer.ProcessGraphGenerator;

import eu.dnetlib.functionality.modular.ui.workflows.util.ISLookupClient;

import eu.dnetlib.functionality.modular.ui.workflows.util.ISRegistryClient;

import eu.dnetlib.miscutils.datetime.DateUtils;

import eu.dnetlib.msro.workflows.sarasvati.loader.ProfileToSarasvatiConverter;

import eu.dnetlib.msro.workflows.sarasvati.loader.WorkflowExecutor;

import eu.dnetlib.msro.workflows.sarasvati.registry.GraphProcessRegistry;

import eu.dnetlib.msro.workflows.util.ProcessUtils;

import eu.dnetlib.msro.workflows.util.WorkflowsConstants;

import eu.dnetlib.msro.workflows.util.WorkflowsConstants.WorkflowStatus;

/**

 * Web controller for the UI

 *

 * @author Michele Artini

 */

@Controller

public class WorkflowsController extends AbstractAjaxController {

	private final class JournalEntryFunction implements Function<Map<String, String>, ProcessListEntry> {

		@Override

		public ProcessListEntry apply(final Map<String, String> input) {

			final String name = input.get(WorkflowsConstants.SYSTEM_WF_PROFILE_NAME);

			final String repo = input.containsKey(WorkflowsConstants.DATAPROVIDER_NAME) ? input.get(WorkflowsConstants.DATAPROVIDER_NAME) : "";

			final String repoId = input.containsKey(WorkflowsConstants.DATAPROVIDER_ORIGINALID) ? input.get(WorkflowsConstants.DATAPROVIDER_ORIGINALID) : "";

			final String apiId = input.containsKey(WorkflowsConstants.DATAPROVIDER_INTERFACE) ? input.get(WorkflowsConstants.DATAPROVIDER_INTERFACE) : "";

			final String procId = input.get(WorkflowsConstants.SYSTEM_WF_PROCESS_ID);

			final String wfId = input.get(WorkflowsConstants.SYSTEM_WF_PROFILE_ID);

			final String family = input.get(WorkflowsConstants.SYSTEM_WF_PROFILE_FAMILY);

			final long date = NumberUtils.toLong(input.get(LogMessage.LOG_DATE_FIELD), 0);

			final String status = Boolean.valueOf(input.get(WorkflowsConstants.SYSTEM_COMPLETED_SUCCESSFULLY)) ? "SUCCESS" : "FAILURE";

			return new ProcessListEntry(procId, wfId, name, family, status, date, repo, repoId, apiId);

		}

	}

	@Resource

	private ISLookupClient isLookupClient;

	@Resource

	private ISRegistryClient isRegistryClient;

	@Resource

	private GraphProcessRegistry graphProcessRegistry;

	@Resource

	private ProcessGraphGenerator processGraphGenerator;

	@Resource

	private WorkflowSectionGrouper workflowSectionGrouper;

	@Resource

	private WorkflowExecutor workflowExecutor;

	@Resource

	private ProfileToSarasvatiConverter profileToSarasvatiConverter;

	@Resource(name = "msroWorkflowLogger")

	private DnetLogger dnetLogger;

	private static final Log log = LogFactory.getLog(WorkflowsController.class);

	@RequestMapping("/ui/list_metaworkflows.json")

	public @ResponseBody List<MetaWorkflowDescriptor> listMetaWorflowsForSection(@RequestParam(value = "section", required = false) final String sectionName,

			@RequestParam(value = "dsId", required = false) final String dsId)

			throws ISLookUpException, IOException {

		if (sectionName != null) {

			return workflowSectionGrouper.listMetaWorflowsForSection(sectionName);

		} else if (dsId != null) {

			return workflowSectionGrouper.listMetaWorflowsForDatasource(dsId);

		} else {

			return Lists.newArrayList();

		}

	}

	@RequestMapping("/ui/wf_metaworkflow.json")

	public @ResponseBody AdvancedMetaWorkflowDescriptor getMetaWorkflow(@RequestParam(value = "id", required = true) final String id) throws Exception {

		return isLookupClient.getMetaWorkflow(id);

	}

	@RequestMapping("/ui/wf_atomic_workflow.json")

	public @ResponseBody AtomicWorkflowDescriptor getAtomicWorkflow(@RequestParam(value = "id", required = true) final String id) throws Exception {

		final AtomicWorkflowDescriptor wf = isLookupClient.getAtomicWorkflow(id);

		final String xml = profileToSarasvatiConverter.getSarasvatiWorkflow(id).getWorkflowXml();

		wf.setMapContent(processGraphGenerator.getWfDescImageMap(id, xml));

		return wf;

	}

	@RequestMapping("/ui/wf_atomic_workflow.img")

	public void showAtomicWorkflow(final HttpServletResponse response, @RequestParam(value = "id", required = true) final String id) throws Exception {

		final String xml = profileToSarasvatiConverter.getSarasvatiWorkflow(id).getWorkflowXml();

		final Set<String> notConfiguredNodes = isLookupClient.getNotConfiguredNodes(id);

		final BufferedImage image = processGraphGenerator.getWfDescImage(id, xml, notConfiguredNodes);

		sendImage(response, image);

	}

	private void sendImage(final HttpServletResponse response, final BufferedImage image) throws IOException {

		response.setContentType("image/png");

		final OutputStream out = response.getOutputStream();

		ImageIO.write(image, "png", out);

		out.flush();

		out.close();

	}

	@RequestMapping("/ui/wf.start")

	public @ResponseBody String startWorkflow(@RequestParam(value = "id", required = true) final String id) throws Exception {

		return workflowExecutor.startProcess(id);

	}

	@RequestMapping("/ui/metawf.start")

	public @ResponseBody String startMetaWorkflow(@RequestParam(value = "id", required = true) final String id) throws Exception {

		workflowExecutor.startMetaWorkflow(id, true);

		return id;

	}

	@RequestMapping("/ui/wf_workflow_node.json")

	public @ResponseBody NodeInfo workflowNode_info(@RequestParam(value = "wf", required = true) final String wfId,

			@RequestParam(value = "node", required = true) final String nodeName) throws ISLookUpException, IOException {

		return isLookupClient.getNodeInfo(wfId, nodeName);

	}

	@RequestMapping("/ui/wf_metaworkflow.edit")

	public @ResponseBody boolean scheduleMetaWorkflow(@RequestParam(value = "json", required = true) final String json) throws Exception {

		final AdvancedMetaWorkflowDescriptor info = new Gson().fromJson(json, AdvancedMetaWorkflowDescriptor.class);

		log.info("Updating workflow " + info.getName());

		final String xml = isLookupClient.getProfile(info.getWfId());

		final boolean res = isRegistryClient.updateSarasvatiMetaWorkflow(info.getWfId(), xml, info);

		return res;

	}

	@RequestMapping("/ui/clone_metaworkflow.do")

	public @ResponseBody String cloneMetaWf(@RequestParam(value = "id", required = true) final String id,

			@RequestParam(value = "name", required = true) final String name) throws Exception {

		if (name.trim().length() > 0) {

			final String xml = isLookupClient.getProfile(id);

			final SAXReader reader = new SAXReader();

			final Document doc = reader.read(new StringReader(xml));

			doc.selectSingleNode("//METAWORKFLOW_NAME").setText(name);

			for (final Object o : doc.selectNodes("//WORKFLOW")) {

				final Element n = (Element) o;

				final String atomWfXml = isLookupClient.getProfile(n.valueOf("@id"));

				final String newAtomWfId = isRegistryClient.registerProfile(atomWfXml);

				n.addAttribute("id", newAtomWfId);

			}

			return isRegistryClient.registerProfile(doc.asXML());

		} else {

			throw new IllegalArgumentException("Name is empty");

		}

	}

	@RequestMapping("/ui/wf_proc_node.json")

	public @ResponseBody NodeTokenInfo getProcessWorkflowNode(@RequestParam(value = "id", required = true) final String pid,

			@RequestParam(value = "node", required = true) final long nid) throws Exception {

		final NodeToken token = findNodeToken(pid, nid);

		final NodeTokenInfo info = token == null ? new NodeTokenInfo(findNodeName(pid, nid)) : new NodeTokenInfo(token);

		return info;

	}

	private NodeToken findNodeToken(final String pid, final long nid) {

		final GraphProcess process = graphProcessRegistry.findProcess(pid);

		if (process != null) {

			for (final NodeToken token : process.getNodeTokens()) {

				if (token.getNode().getId() == nid) { return token; }

			}

		}

		return null;

	}

	private String findNodeName(final String pid, final long nid) {

		final GraphProcess process = graphProcessRegistry.findProcess(pid);

		if (process != null) {

			for (final Node node : process.getGraph().getNodes()) {

				if (node.getId() == nid) { return node.getName(); }

			}

		}

		return "-";

	}

	@RequestMapping("/ui/wf_proc.img")

	public void showProcessWorkflow(final HttpServletResponse response, @RequestParam(value = "id", required = true) final String id) throws Exception {

		final BufferedImage image = processGraphGenerator.getProcessImage(id);

		sendImage(response, image);

	}

	@RequestMapping("/ui/wf_proc.kill")

	public @ResponseBody boolean killProcessWorkflow(@RequestParam(value = "id", required = true) final String id) throws Exception {

		final GraphProcess proc = graphProcessRegistry.findProcess(id);

		proc.setState(ProcessState.Canceled);

		return true;

	}

	@RequestMapping("/ui/wf_journal.range")

	public @ResponseBody Collection<ProcessListEntry> rangeWfJournal(@RequestParam(value = "start", required = true) final String start,

			@RequestParam(value = "end", required = true) final String end) throws Exception {

		final Map<String, ProcessListEntry> res = Maps.newHashMap();

		final DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd");

		final DateTime startDate = formatter.parseDateTime(start);

		final DateTime endDate = formatter.parseDateTime(end).plusHours(23).plusMinutes(59).plusSeconds(59);

		final Iterator<ProcessListEntry> iter = Iterators.transform(dnetLogger.range(startDate.toDate(), endDate.toDate()), new JournalEntryFunction());

		while (iter.hasNext()) {

			final ProcessListEntry e = iter.next();

			res.put(e.getProcId(), e);

		}

		final long now = DateUtils.now();

		if (startDate.isBefore(now) && endDate.isAfter(now)) {

			for (final String pid : graphProcessRegistry.listIdentifiers()) {

				final GraphProcess proc = graphProcessRegistry.findProcess(pid);

				res.put(pid, new ProcessListEntry(pid, proc));

			}

		}

		return res.values();

	}

	@RequestMapping("/ui/wf_journal.find")

	public @ResponseBody Collection<ProcessListEntry> findWfJournal(@RequestParam(value = "wfs", required = true) final String wfs) {

		final Map<String, ProcessListEntry> res = Maps.newHashMap();

		final Set<String> wfFilter = new Gson().fromJson(wfs, new TypeToken<Set<String>>() {}.getType());

		for (final String wfId : wfFilter) {

			final Iterator<ProcessListEntry> iter =

					Iterators.transform(dnetLogger.find(WorkflowsConstants.SYSTEM_WF_PROFILE_ID, wfId), new JournalEntryFunction());

			while (iter.hasNext()) {

				final ProcessListEntry e = iter.next();

				res.put(e.getProcId(), e);

			}

		}

		for (final String pid : graphProcessRegistry.listIdentifiers()) {

			final GraphProcess proc = graphProcessRegistry.findProcess(pid);

			if (wfFilter.contains(ProcessUtils.calculateWfId(proc))) {

				res.put(pid, new ProcessListEntry(pid, proc));

			}

		}

		return res.values();

	}

	@RequestMapping("/ui/wf_journal_byFamily.find")

	public @ResponseBody Collection<ProcessListEntry> findWfJournalByFamily(@RequestParam(value = "family", required = true) final String family)

			throws IOException {

		final Iterator<ProcessListEntry> iter =

				Iterators.transform(dnetLogger.find(WorkflowsConstants.SYSTEM_WF_PROFILE_FAMILY, family), new JournalEntryFunction());

		return Lists.newArrayList(iter);

	}

	@RequestMapping("/ui/wf_journal.get")

	public @ResponseBody Map<String, Object> getWfJournalLog(@RequestParam(value = "id", required = true) final String id) throws Exception {

		final Map<String, Object> res = Maps.newHashMap();

		final Map<String, String> logs = dnetLogger.findOne("system:processId", id);

		if (logs != null && !logs.isEmpty()) {

			final List<String> keys = Lists.newArrayList(logs.keySet());

			Collections.sort(keys);

			final List<Map<String, String>> journalEntry = Lists.newArrayList();

			for (final String k : keys) {

				final Map<String, String> m = Maps.newHashMap();

				m.put("name", k);

				m.put("value", logs.get(k));

				journalEntry.add(m);

			}

			res.put("journal", journalEntry);

		}

		final GraphProcess process = graphProcessRegistry.findProcess(id);

		if (process != null) {

			final String mapContent = process.getState() == ProcessState.Created ? "" : processGraphGenerator.getProcessImageMap(id);

			String status = "";

			if (!process.isComplete()) {

				status = process.getState().toString().toUpperCase();

			} else if ("true".equals(process.getEnv().getAttribute(WorkflowsConstants.SYSTEM_COMPLETED_SUCCESSFULLY))) {

				status = "SUCCESS";

			} else {

				status = "FAILURE";

			}

			final String img =

					process.getState() == ProcessState.Created ? "../resources/img/notStarted.gif" : "wf_proc.img?id=" + id + "&t=" + DateUtils.now();

			final String name = process.getGraph().getName();

			final long startDate = NumberUtils.toLong(process.getEnv().getAttribute(WorkflowsConstants.SYSTEM_START_DATE), 0);

			final long endDate = NumberUtils.toLong(process.getEnv().getAttribute(WorkflowsConstants.SYSTEM_END_DATE), 0);

			final AtomicWorkflowDescriptor wf = new AtomicWorkflowDescriptor(id, name, status, mapContent, img, true, "auto", "RUNNING", startDate, endDate);

			res.put("graph", wf);

		}

		return res;

	}

	@RequestMapping("/ui/wf_atomic_workflow.enable")

	public @ResponseBody String enableAtomicWf(@RequestParam(value = "id", required = true) final String id,

			@RequestParam(value = "start", required = true) final String value) throws Exception {

		isRegistryClient.configureWorkflowStart(id, value);

		return value;

	}

	@RequestMapping("/ui/workflow_user_params.json")

	public @ResponseBody List<NodeWithUserParams> listWorkflowUserParams(@RequestParam(value = "wf", required = true) final String wfId) throws Exception {

		return isLookupClient.listWorkflowUserParams(wfId);

	}

	@RequestMapping(value = "/ui/save_user_params.do")

	public @ResponseBody boolean saveWorkflowUserParams(@RequestParam(value = "wf", required = true) final String wfId,

			@RequestParam(value = "params", required = true) final String jsonParams) throws Exception {

		final String xml = isLookupClient.getProfile(wfId);

		final List<NodeWithUserParams> params = new Gson().fromJson(jsonParams, new TypeToken<List<NodeWithUserParams>>() {}.getType());

		final boolean res = isRegistryClient.updateSarasvatiWorkflow(wfId, xml, params);

		for (final String metaWfId : isLookupClient.listMetaWorflowsForWfId(wfId)) {

			if (isLookupClient.isExecutable(metaWfId)) {

				isRegistryClient.updateMetaWorkflowStatus(metaWfId, WorkflowStatus.EXECUTABLE);

			} else {

				isRegistryClient.updateMetaWorkflowStatus(metaWfId, WorkflowStatus.WAIT_USER_SETTINGS);

			}

		}

		return res;

	}

}